diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml index 355f6e26b9..f84dd7dc01 100644 --- a/.github/workflows/rust.yml +++ b/.github/workflows/rust.yml @@ -191,13 +191,24 @@ jobs: cargo check -p subxt-signer --no-default-features --features ecdsa cargo check -p subxt-signer --no-default-features --features unstable-eth + # Subxt-rpcs has a bunch of clients that can be exposed. Check that they all stand on their own. + - name: Cargo check subxt-rpcs + run: | + cargo check -p subxt-rpcs + cargo check -p subxt-rpcs --no-default-features --features native + cargo check -p subxt-rpcs --no-default-features --features native,subxt + cargo check -p subxt-rpcs --no-default-features --features native,jsonrpsee + cargo check -p subxt-rpcs --no-default-features --features native,reconnecting-rpc-client + cargo check -p subxt-rpcs --no-default-features --features native,mock-rpc-client + cargo check -p subxt-rpcs --no-default-features --features native,unstable-light-client + # We can't enable web features here, so no cargo hack. - name: Cargo check subxt-lightclient run: cargo check -p subxt-lightclient # Next, check each other package in isolation. - name: Cargo hack; check each feature/crate on its own - run: cargo hack --exclude subxt --exclude subxt-signer --exclude subxt-lightclient --exclude-all-features --each-feature check --workspace + run: cargo hack --exclude subxt --exclude subxt-signer --exclude subxt-lightclient --exclude subxt-rpcs --exclude-all-features --each-feature check --workspace # Check the parachain-example code, which isn't a part of the workspace so is otherwise ignored. - name: Cargo check parachain-example @@ -225,6 +236,11 @@ jobs: - name: Rust Cache uses: Swatinem/rust-cache@f0deed1e0edfc6a9be95417288c0e1099b1eeec3 # v2.7.7 + - name: Cargo check web features which require wasm32 target. + run: | + cargo check -p subxt-rpcs --target wasm32-unknown-unknown --no-default-features --features web + cargo check -p subxt-rpcs --target wasm32-unknown-unknown --no-default-features --features web,reconnecting-rpc-client + # Check WASM examples, which aren't a part of the workspace and so are otherwise missed: - name: Cargo check WASM examples run: | diff --git a/Cargo.lock b/Cargo.lock index ea4f2530c2..0f4206eb1a 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -3976,6 +3976,7 @@ dependencies = [ "subxt", "subxt-codegen", "subxt-metadata", + "subxt-rpcs", "subxt-signer", "subxt-test-macro", "syn 2.0.87", @@ -10551,14 +10552,11 @@ dependencies = [ "bitvec", "derive-where", "either", - "finito", "frame-metadata 18.0.0", "futures", - "getrandom", "hex", "http-body", "hyper", - "impl-serde 0.5.0", "jsonrpsee", "parity-scale-codec", "polkadot-sdk", @@ -10574,6 +10572,7 @@ dependencies = [ "subxt-lightclient", "subxt-macro", "subxt-metadata", + "subxt-rpcs", "subxt-signer", "thiserror 2.0.0", "tokio", @@ -10720,6 +10719,35 @@ dependencies = [ "thiserror 2.0.0", ] +[[package]] +name = "subxt-rpcs" +version = "0.39.0" +dependencies = [ + "derive-where", + "finito", + "frame-metadata 18.0.0", + "futures", + "getrandom", + "hex", + "http-body", + "hyper", + "impl-serde 0.5.0", + "jsonrpsee", + "parity-scale-codec", + "primitive-types 0.13.1", + "serde", + "serde_json", + "subxt-core", + "subxt-lightclient", + "thiserror 2.0.0", + "tokio", + "tokio-util", + "tower", + "tracing", + "url", + "wasm-bindgen-futures", +] + [[package]] name = "subxt-signer" version = "0.39.0" diff --git a/Cargo.toml b/Cargo.toml index 31542dd12c..09b9e57dda 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -12,6 +12,7 @@ members = [ "testing/generate-custom-metadata", "macro", "metadata", + "rpcs", "signer", "subxt", "scripts/artifacts", @@ -82,7 +83,7 @@ frame-metadata = { version = "18.0.0", default-features = false } futures = { version = "0.3.31", default-features = false, features = ["std"] } getrandom = { version = "0.2", default-features = false } hashbrown = "0.14.5" -hex = { version = "0.4.3", default-features = false } +hex = { version = "0.4.3", default-features = false, features = ["alloc"] } heck = "0.5.0" impl-serde = { version = "0.5.0", default-features = false } indoc = "2" @@ -116,6 +117,9 @@ which = "6.0.3" strip-ansi-escapes = "0.2.0" proptest = "1.5.0" hex-literal = "0.4.1" +tower = "0.4" +hyper = "1" +http-body = "1" # Light client support: smoldot = { version = "0.18.0", default-features = false } @@ -145,6 +149,7 @@ subxt-macro = { version = "0.39.0", path = "macro" } subxt-metadata = { version = "0.39.0", path = "metadata", default-features = false } subxt-codegen = { version = "0.39.0", path = "codegen" } subxt-signer = { version = "0.39.0", path = "signer", default-features = false } +subxt-rpcs = { version = "0.39.0", path = "rpcs", default-features = false } subxt-lightclient = { version = "0.39.0", path = "lightclient", default-features = false } subxt-utils-fetchmetadata = { version = "0.39.0", path = "utils/fetch-metadata", default-features = false } test-runtime = { path = "testing/test-runtime" } diff --git a/RELEASING.md b/RELEASING.md index 6fa609649e..5dc244a9b0 100644 --- a/RELEASING.md +++ b/RELEASING.md @@ -86,6 +86,7 @@ We also assume that ongoing work done is being merged directly to the `master` b ``` (cd core && cargo publish) && \ + (cd rpcs && cargo publish) && \ (cd subxt && cargo publish) && \ (cd signer && cargo publish) && \ (cd cli && cargo publish); diff --git a/core/Cargo.toml b/core/Cargo.toml index ca0f63f216..663800c7ef 100644 --- a/core/Cargo.toml +++ b/core/Cargo.toml @@ -40,7 +40,7 @@ scale-encode = { workspace = true, default-features = false, features = ["derive frame-metadata = { workspace = true, default-features = false } subxt-metadata = { workspace = true, default-features = false } derive-where = { workspace = true } -hex = { workspace = true, default-features = false, features = ["alloc"] } +hex = { workspace = true } serde = { workspace = true, default-features = false, features = ["derive"] } serde_json = { workspace = true, default-features = false, features = ["raw_value", "alloc"] } tracing = { workspace = true, default-features = false } diff --git a/core/src/config/mod.rs b/core/src/config/mod.rs index c083283b4c..e171106750 100644 --- a/core/src/config/mod.rs +++ b/core/src/config/mod.rs @@ -39,7 +39,7 @@ pub trait Config: Sized + Send + Sync + 'static { type Hash: BlockHash; /// The account ID type. - type AccountId: Debug + Clone + Encode; + type AccountId: Debug + Clone + Encode + Serialize; /// The address type. type Address: Debug + Encode + From; diff --git a/core/src/config/polkadot.rs b/core/src/config/polkadot.rs index 7f4e3a88f9..9875c233f7 100644 --- a/core/src/config/polkadot.rs +++ b/core/src/config/polkadot.rs @@ -19,12 +19,18 @@ pub enum PolkadotConfig {} impl Config for PolkadotConfig { type Hash = ::Hash; type AccountId = ::AccountId; - type Address = MultiAddress; type Signature = ::Signature; type Hasher = ::Hasher; type Header = ::Header; + type AssetId = ::AssetId; + + // Address on Polkadot has no account index, whereas it's u32 on + // the default substrate dev node. + type Address = MultiAddress; + + // These are the same as the default substrate node, but redefined + // because we need to pass the PolkadotConfig trait as a param. type ExtrinsicParams = PolkadotExtrinsicParams; - type AssetId = u32; } /// A struct representing the signed extra and additional parameters required diff --git a/lightclient/src/lib.rs b/lightclient/src/lib.rs index 24fd8c960f..0517b8d444 100644 --- a/lightclient/src/lib.rs +++ b/lightclient/src/lib.rs @@ -59,6 +59,15 @@ pub enum LightClientRpcError { #[error("RPC Error: {0}.")] pub struct JsonRpcError(Box); +impl JsonRpcError { + /// Attempt to deserialize this error into some type. + pub fn try_deserialize<'a, T: serde::de::Deserialize<'a>>( + &'a self, + ) -> Result { + serde_json::from_str(self.0.get()) + } +} + /// This represents a single light client connection to the network. Instantiate /// it with [`LightClient::relay_chain()`] to communicate with a relay chain, and /// then call [`LightClient::parachain()`] to establish connections to parachains. diff --git a/rpcs/Cargo.toml b/rpcs/Cargo.toml new file mode 100644 index 0000000000..f3a62d6363 --- /dev/null +++ b/rpcs/Cargo.toml @@ -0,0 +1,98 @@ +[package] +name = "subxt-rpcs" +version.workspace = true +authors.workspace = true +edition.workspace = true +rust-version.workspace = true +publish = true + +license.workspace = true +readme = "README.md" +repository.workspace = true +documentation.workspace = true +homepage.workspace = true +description = "Make RPC calls to Substrate based nodes" +keywords = ["parity", "subxt", "rpcs"] + +[features] +default = ["jsonrpsee", "native"] + +subxt = ["dep:subxt-core"] +jsonrpsee = ["dep:jsonrpsee", "dep:tokio-util"] + +unstable-light-client = [ + "dep:subxt-lightclient" +] + +reconnecting-rpc-client = [ + "jsonrpsee", + "dep:finito", + "dep:tokio", + "tokio/sync", +] + +mock-rpc-client = [ + "dep:tokio", + "tokio/sync", +] + +# Enable this for native (ie non web/wasm builds). +# Exactly 1 of "web" and "native" is expected. +native = [ + "jsonrpsee?/async-client", + "jsonrpsee?/client-ws-transport-tls", + "jsonrpsee?/ws-client", + "subxt-lightclient?/native", +] + +# Enable this for web/wasm builds. +# Exactly 1 of "web" and "native" is expected. +web = [ + "jsonrpsee?/async-wasm-client", + "jsonrpsee?/client-web-transport", + "jsonrpsee?/wasm-client", + "subxt-lightclient?/web", + "finito?/wasm-bindgen", + "dep:wasm-bindgen-futures", + "getrandom/js", +] + +[dependencies] +codec = { workspace = true } +derive-where = { workspace = true } +futures = { workspace = true } +hex = { workspace = true } +impl-serde = { workspace = true } +primitive-types = { workspace = true, features = ["serde"] } +serde = { workspace = true } +serde_json = { workspace = true, features = ["default", "raw_value"] } +thiserror = { workspace = true } +frame-metadata = { workspace = true, features = ["decode"] } +url = { workspace = true } +tracing = { workspace = true } +getrandom = { workspace = true, optional = true } + +# Included with the jsonrpsee feature +jsonrpsee = { workspace = true, optional = true } +tokio-util = { workspace = true, features = ["compat"], optional = true } + +# Included with the reconnecting-rpc-client feature +finito = { workspace = true, optional = true } +tokio = { workspace = true, optional = true } + +# Included with the lightclient feature +subxt-lightclient = { workspace = true, optional = true, default-features = false } + +# Included with the subxt-core feature to impl Config for RpcConfig +subxt-core = { workspace = true, optional = true } + +# Included with WASM feature +wasm-bindgen-futures = { workspace = true, optional = true } + +[dev-dependencies] +tower = { workspace = true } +hyper = { workspace = true } +http-body = { workspace = true } + +[lints] +workspace = true diff --git a/subxt/src/backend/rpc/jsonrpsee_impl.rs b/rpcs/src/client/jsonrpsee_impl.rs similarity index 63% rename from subxt/src/backend/rpc/jsonrpsee_impl.rs rename to rpcs/src/client/jsonrpsee_impl.rs index 5db8864ef6..173396fb25 100644 --- a/subxt/src/backend/rpc/jsonrpsee_impl.rs +++ b/rpcs/src/client/jsonrpsee_impl.rs @@ -1,13 +1,13 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. use super::{RawRpcFuture, RawRpcSubscription, RpcClientT}; -use crate::error::RpcError; +use crate::Error; use futures::stream::{StreamExt, TryStreamExt}; use jsonrpsee::{ core::{ - client::{Client, ClientT, SubscriptionClientT, SubscriptionKind}, + client::{Error as JsonrpseeError, Client, ClientT, SubscriptionClientT, SubscriptionKind}, traits::ToRpcParams, }, types::SubscriptionId, @@ -29,9 +29,7 @@ impl RpcClientT for Client { params: Option>, ) -> RawRpcFuture<'a, Box> { Box::pin(async move { - let res = ClientT::request(self, method, Params(params)) - .await - .map_err(|e| RpcError::ClientError(Box::new(e)))?; + let res = ClientT::request(self, method, Params(params)).await?; Ok(res) }) } @@ -48,9 +46,7 @@ impl RpcClientT for Client { sub, Params(params), unsub, - ) - .await - .map_err(|e| RpcError::ClientError(Box::new(e)))?; + ).await?; let id = match stream.kind() { SubscriptionKind::Subscription(SubscriptionId::Str(id)) => { @@ -60,9 +56,29 @@ impl RpcClientT for Client { }; let stream = stream - .map_err(|e| RpcError::ClientError(Box::new(e))) + .map_err(|e| Error::Client(Box::new(e))) .boxed(); Ok(RawRpcSubscription { stream, id }) }) } } + +// Convert a JsonrpseeError into the RPC error in this crate. +// The main reason for this is to capture user errors so that +// they can be represented/handled without casting. +impl From for Error { + fn from(error: JsonrpseeError) -> Self { + match error { + JsonrpseeError::Call(e) => { + Error::User(crate::UserError { + code: e.code(), + message: e.message().to_owned(), + data: e.data().map(|d| d.to_owned()) + }) + }, + e => { + Error::Client(Box::new(e)) + } + } + } +} diff --git a/subxt/src/backend/rpc/lightclient_impl.rs b/rpcs/src/client/lightclient_impl.rs similarity index 52% rename from subxt/src/backend/rpc/lightclient_impl.rs rename to rpcs/src/client/lightclient_impl.rs index f4e0deec6a..5384f997ca 100644 --- a/subxt/src/backend/rpc/lightclient_impl.rs +++ b/rpcs/src/client/lightclient_impl.rs @@ -1,9 +1,9 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. use super::{RawRpcFuture, RawRpcSubscription, RpcClientT}; -use crate::error::RpcError; +use crate::Error; use futures::stream::{StreamExt, TryStreamExt}; use serde_json::value::RawValue; use subxt_lightclient::{LightClientRpc, LightClientRpcError}; @@ -16,8 +16,7 @@ impl RpcClientT for LightClientRpc { ) -> RawRpcFuture<'a, Box> { Box::pin(async move { let res = self.request(method.to_owned(), params) - .await - .map_err(lc_err_to_rpc_err)?; + .await?; Ok(res) }) @@ -31,12 +30,11 @@ impl RpcClientT for LightClientRpc { ) -> RawRpcFuture<'a, RawRpcSubscription> { Box::pin(async move { let sub = self.subscribe(sub.to_owned(), params, unsub.to_owned()) - .await - .map_err(lc_err_to_rpc_err)?; + .await?; let id = Some(sub.id().to_owned()); let stream = sub - .map_err(|e| RpcError::ClientError(Box::new(e))) + .map_err(|e| Error::Client(Box::new(e))) .boxed(); Ok(RawRpcSubscription { id, stream }) @@ -44,10 +42,21 @@ impl RpcClientT for LightClientRpc { } } -fn lc_err_to_rpc_err(err: LightClientRpcError) -> RpcError { - match err { - LightClientRpcError::JsonRpcError(e) => RpcError::ClientError(Box::new(e)), - LightClientRpcError::SmoldotError(e) => RpcError::RequestRejected(e), - LightClientRpcError::BackgroundTaskDropped => RpcError::SubscriptionDropped, +impl From for Error { + fn from(err: LightClientRpcError) -> Error { + match err { + LightClientRpcError::JsonRpcError(e) => { + // If the error is a typical user error, report it as such, else + // just wrap the error into a ClientError. + let Ok(user_error) = e.try_deserialize() else { + return Error::Client(Box::::from(e)) + }; + Error::User(user_error) + }, + LightClientRpcError::SmoldotError(e) => Error::Client(Box::::from(e)), + LightClientRpcError::BackgroundTaskDropped => Error::Client(Box::::from("Smoldot background task was dropped")), + } } -} \ No newline at end of file +} + +type CoreError = dyn core::error::Error + Send + Sync + 'static; \ No newline at end of file diff --git a/rpcs/src/client/mock_rpc_client.rs b/rpcs/src/client/mock_rpc_client.rs new file mode 100644 index 0000000000..97ca23b6df --- /dev/null +++ b/rpcs/src/client/mock_rpc_client.rs @@ -0,0 +1,633 @@ +// Copyright 2019-2025 Parity Technologies (UK) Ltd. +// This file is dual-licensed as Apache-2.0 or GPL-3.0. +// see LICENSE for license details. + +//! This module exposes a [`MockRpcClient`], which is useful for testing. +//! +//! # Example +//! +//! ```rust +//! use subxt_rpcs::client::{ RpcClient, MockRpcClient }; +//! use subxt_rpcs::client::mock_rpc_client::Json; +//! +//! let mut state = vec![ +//! Json(1u8), +//! Json(2u8), +//! Json(3u8), +//! ]; +//! +//! // Define a mock client by providing some functions which intercept +//! // method and subscription calls and return some response. +//! let mock_client = MockRpcClient::builder() +//! .method_handler_once("foo", move |params| { +//! // Return each item from our state, and then null afterwards. +//! let val = state.pop(); +//! async move { val } +//! }) +//! .subscription_handler("bar", |params, unsub| async move { +//! // Arrays, vecs or an RpcSubscription can be returned here to +//! // signal the set of values to be handed back on a subscription. +//! vec![Json(1), Json(2), Json(3)] +//! }) +//! .build(); +//! +//! // Build an RPC Client that can be used in Subxt or in conjunction with +//! // the RPC methods provided in this crate. +//! let rpc_client = RpcClient::new(mock_client); +//! ``` + +use super::{RpcClientT, RawRpcFuture, RawRpcSubscription}; +use crate::{Error, UserError}; +use core::future::Future; +use futures::StreamExt; +use serde_json::value::RawValue; +use std::sync::{Arc, Mutex}; +use std::collections::{HashMap, VecDeque}; + +type MethodHandlerFnOnce = Box>) -> RawRpcFuture<'static, Box> + Send + Sync + 'static>; +type SubscriptionHandlerFnOnce = Box>, &str) -> RawRpcFuture<'static, RawRpcSubscription> + Send + Sync + 'static>; + +type MethodHandlerFn = Box>) -> RawRpcFuture<'static, Box> + Send + Sync + 'static>; +type SubscriptionHandlerFn = Box>, &str) -> RawRpcFuture<'static, RawRpcSubscription> + Send + Sync + 'static>; + +/// A builder to configure and build a new [`MockRpcClient`]. +#[derive(Default)] +pub struct MockRpcClientBuilder { + method_handlers_once: HashMap>, + method_handlers: HashMap, + method_fallback: Option, + subscription_handlers_once: HashMap>, + subscription_handlers: HashMap, + subscription_fallback: Option +} + +impl MockRpcClientBuilder { + /// Add a handler for a specific RPC method. This is called exactly once, and multiple such calls for the same method can be + /// added. Only when any calls registered with this have been used up is the method set by [`Self::method_handler`] called. + pub fn method_handler_once(mut self, name: impl Into, f: MethodHandler) -> Self + where + MethodHandler: FnOnce(Option>) -> MFut + Send + Sync + 'static, + MFut: Future + Send + 'static, + MRes: IntoHandlerResponse, + { + let handler: MethodHandlerFnOnce = Box::new(move |_method: &str, params: Option>| { + let fut = f(params); + Box::pin(async move { fut.await.into_handler_response() }) + }); + self.method_handlers_once.entry(name.into()).or_default().push_back(handler); + self + } + + /// Add a handler for a specific RPC method. + pub fn method_handler(mut self, name: impl Into, mut f: MethodHandler) -> Self + where + MethodHandler: FnMut(Option>) -> MFut + Send + Sync + 'static, + MFut: Future + Send + 'static, + MRes: IntoHandlerResponse, + { + let handler: MethodHandlerFn = Box::new(move |_method: &str, params: Option>| { + let fut = f(params); + Box::pin(async move { fut.await.into_handler_response() }) + }); + self.method_handlers.insert(name.into(), handler); + self + } + + /// Add a fallback handler to handle any methods not handled by a specific handler. + pub fn method_fallback(mut self, mut f: MethodHandler) -> Self + where + MethodHandler: FnMut(String, Option>) -> MFut + Send + Sync + 'static, + MFut: Future + Send + 'static, + MRes: IntoHandlerResponse, + { + let handler: MethodHandlerFn = Box::new(move |method: &str, params: Option>| { + let fut = f(method.to_owned(), params); + Box::pin(async move { fut.await.into_handler_response() }) + }); + self.method_fallback = Some(handler); + self + } + + /// Add a handler for a specific RPC subscription. + pub fn subscription_handler_once(mut self, name: impl Into, f: SubscriptionHandler) -> Self + where + SubscriptionHandler: FnOnce(Option>, String) -> SFut + Send + Sync + 'static, + SFut: Future + Send + 'static, + SRes: IntoSubscriptionResponse, + { + let handler: SubscriptionHandlerFnOnce = Box::new(move |_sub: &str, params: Option>, unsub: &str| { + let fut = f(params, unsub.to_owned()); + Box::pin(async move { fut.await.into_subscription_response() }) + }); + self.subscription_handlers_once.entry(name.into()).or_default().push_back(handler); + self + } + + /// Add a handler for a specific RPC subscription. + pub fn subscription_handler(mut self, name: impl Into, mut f: SubscriptionHandler) -> Self + where + SubscriptionHandler: FnMut(Option>, String) -> SFut + Send + Sync + 'static, + SFut: Future + Send + 'static, + SRes: IntoSubscriptionResponse, + { + let handler: SubscriptionHandlerFn = Box::new(move |_sub: &str, params: Option>, unsub: &str| { + let fut = f(params, unsub.to_owned()); + Box::pin(async move { fut.await.into_subscription_response() }) + }); + self.subscription_handlers.insert(name.into(), handler); + self + } + + /// Add a fallback handler to handle any subscriptions not handled by a specific handler. + pub fn subscription_fallback(mut self, mut f: SubscriptionHandler) -> Self + where + SubscriptionHandler: FnMut(String, Option>, String) -> SFut + Send + Sync + 'static, + SFut: Future + Send + 'static, + SRes: IntoSubscriptionResponse, + { + let handler: SubscriptionHandlerFn = Box::new(move |sub: &str, params: Option>, unsub: &str| { + let fut = f(sub.to_owned(), params, unsub.to_owned()); + Box::pin(async move { fut.await.into_subscription_response() }) + }); + self.subscription_fallback = Some(handler); + self + } + + /// Construct a [`MockRpcClient`] given some state which will be mutably available to each of the handlers. + pub fn build(self) -> MockRpcClient { + MockRpcClient { + method_handlers_once: Arc::new(Mutex::new(self.method_handlers_once)), + method_handlers: Arc::new(Mutex::new(self.method_handlers)), + method_fallback: self.method_fallback.map(|f| Arc::new(Mutex::new(f))), + subscription_handlers_once: Arc::new(Mutex::new(self.subscription_handlers_once)), + subscription_handlers: Arc::new(Mutex::new(self.subscription_handlers)), + subscription_fallback: self.subscription_fallback.map(|f| Arc::new(Mutex::new(f))), + } + } +} + +/// A mock RPC client that responds programmatically to requests. +/// Useful for testing. +#[derive(Clone)] +pub struct MockRpcClient { + // These are all accessed for just long enough to call the method. The method + // returns a future, but the method call itself isn't held for long. + method_handlers_once: Arc>>>, + method_handlers: Arc>>, + method_fallback: Option>>, + subscription_handlers_once: Arc>>>, + subscription_handlers: Arc>>, + subscription_fallback: Option>>, +} + +impl MockRpcClient { + /// Construct a new [`MockRpcClient`] + pub fn builder() -> MockRpcClientBuilder { + MockRpcClientBuilder::default() + } +} + +impl RpcClientT for MockRpcClient { + fn request_raw<'a>( + &'a self, + method: &'a str, + params: Option>, + ) -> RawRpcFuture<'a, Box> { + // Remove and call a one-time handler if any exist. + let mut handlers_once = self.method_handlers_once.lock().unwrap(); + if let Some(handlers) = handlers_once.get_mut(method) { + if let Some(handler) = handlers.pop_front() { + return handler(method, params) + } + } + drop(handlers_once); + + // Call a specific handler for the method if one is found. + let mut handlers = self.method_handlers.lock().unwrap(); + if let Some(handler) = handlers.get_mut(method) { + return handler(method, params) + } + drop(handlers); + + // Call a fallback handler if one exists + if let Some(handler) = &self.method_fallback { + let mut handler = handler.lock().unwrap(); + return handler(method, params) + } + + // Else, method not found. + Box::pin(async move { Err(UserError::method_not_found().into()) }) + } + fn subscribe_raw<'a>( + &'a self, + sub: &'a str, + params: Option>, + unsub: &'a str, + ) -> RawRpcFuture<'a, RawRpcSubscription> { + // Remove and call a one-time handler if any exist. + let mut handlers_once = self.subscription_handlers_once.lock().unwrap(); + if let Some(handlers) = handlers_once.get_mut(sub) { + if let Some(handler) = handlers.pop_front() { + return handler(sub, params, unsub) + } + } + drop(handlers_once); + + // Call a specific handler for the subscrpition if one is found. + let mut handlers = self.subscription_handlers.lock().unwrap(); + if let Some(handler) = handlers.get_mut(sub) { + return handler(sub, params, unsub) + } + drop(handlers); + + // Call a fallback handler if one exists + if let Some(handler) = &self.subscription_fallback { + let mut handler = handler.lock().unwrap(); + return handler(sub, params, unsub) + } + + // Else, method not found. + Box::pin(async move { Err(UserError::method_not_found().into()) }) + } +} + +/// Return responses wrapped in this to have them serialized to JSON. +pub struct Json(pub T); + +impl Json { + /// Create a [`Json`] from some serializable value. + /// Useful when value types are heterogenous. + pub fn value_of(item: T) -> Self { + Json(serde_json::to_value(item).expect("item cannot be converted to a serde_json::Value")) + } +} + +/// Anything that can be converted into a valid handler response implements this. +pub trait IntoHandlerResponse { + /// Convert self into a handler response. + fn into_handler_response(self) -> Result, Error>; +} + +impl IntoHandlerResponse for Result { + fn into_handler_response(self) -> Result, Error> { + self.and_then(|val| val.into_handler_response()) + } +} + +impl IntoHandlerResponse for Option { + fn into_handler_response(self) -> Result, Error> { + self.ok_or_else(|| UserError::method_not_found().into()) + .and_then(|val| val.into_handler_response()) + } +} + +impl IntoHandlerResponse for Box { + fn into_handler_response(self) -> Result, Error> { + Ok(self) + } +} + +impl IntoHandlerResponse for serde_json::Value { + fn into_handler_response(self) -> Result, Error> { + serialize_to_raw_value(&self) + } +} + +impl IntoHandlerResponse for Json { + fn into_handler_response(self) -> Result, Error> { + serialize_to_raw_value(&self.0) + } +} + +impl IntoHandlerResponse for core::convert::Infallible { + fn into_handler_response(self) -> Result, Error> { + match self {} + } +} + +fn serialize_to_raw_value(val: &T) -> Result, Error> { + let res = serde_json::to_string(val).map_err(Error::Deserialization)?; + let raw_value = RawValue::from_string(res).map_err(Error::Deserialization)?; + Ok(raw_value) +} + +/// Anything that can be a response to a subscription handler implements this. +pub trait IntoSubscriptionResponse { + /// Convert self into a handler response. + fn into_subscription_response(self) -> Result; +} + +// A tuple of a subscription plus some string is treated as a subscription with that string ID. +impl > IntoSubscriptionResponse for (T, S) { + fn into_subscription_response(self) -> Result { + self.0 + .into_subscription_response() + .map(|mut r| { + r.id = Some(self.1.into()); + r + }) + } +} + +impl IntoSubscriptionResponse for tokio::sync::mpsc::Receiver { + fn into_subscription_response(self) -> Result { + struct IntoStream(tokio::sync::mpsc::Receiver); + impl futures::Stream for IntoStream { + type Item = T; + fn poll_next(mut self: std::pin::Pin<&mut Self>, cx: &mut std::task::Context<'_>) -> std::task::Poll> { + self.0.poll_recv(cx) + } + } + + Ok(RawRpcSubscription { + stream: Box::pin(IntoStream(self).map(|item| item.into_handler_response())), + id: None, + }) + } +} +impl IntoSubscriptionResponse for tokio::sync::mpsc::UnboundedReceiver { + fn into_subscription_response(self) -> Result { + struct IntoStream(tokio::sync::mpsc::UnboundedReceiver); + impl futures::Stream for IntoStream { + type Item = T; + fn poll_next(mut self: std::pin::Pin<&mut Self>, cx: &mut std::task::Context<'_>) -> std::task::Poll> { + self.0.poll_recv(cx) + } + } + + Ok(RawRpcSubscription { + stream: Box::pin(IntoStream(self).map(|item| item.into_handler_response())), + id: None, + }) + } +} + +impl IntoSubscriptionResponse for RawRpcSubscription { + fn into_subscription_response(self) -> Result { + Ok(self) + } +} + +impl IntoSubscriptionResponse for Result { + fn into_subscription_response(self) -> Result { + self.and_then(|res| res.into_subscription_response()) + } +} + +impl IntoSubscriptionResponse for Vec { + fn into_subscription_response(self) -> Result { + let iter = self.into_iter().map(|item| item.into_handler_response()); + Ok(RawRpcSubscription { + stream: Box::pin(futures::stream::iter(iter)), + id: None, + }) + } +} + +impl IntoSubscriptionResponse for Option { + fn into_subscription_response(self) -> Result { + match self { + Some(sub) => { + sub.into_subscription_response() + }, + None => { + Ok(RawRpcSubscription { + stream: Box::pin(futures::stream::empty()), + id: None, + }) + } + } + } +} + +impl IntoSubscriptionResponse for [T; N] { + fn into_subscription_response(self) -> Result { + let iter = self.into_iter().map(|item| item.into_handler_response()); + Ok(RawRpcSubscription { + stream: Box::pin(futures::stream::iter(iter)), + id: None, + }) + } +} + +impl IntoSubscriptionResponse for core::convert::Infallible { + fn into_subscription_response(self) -> Result { + match self {} + } +} + +/// Send the first items and then the second items back on a subscription; +/// If any one of the responses is an error, we'll return the error. +/// If one response has an ID and the other doesn't, we'll use that ID. +pub struct AndThen(pub A, pub B); + +impl IntoSubscriptionResponse for AndThen { + fn into_subscription_response(self) -> Result { + let a_responses = self.0.into_subscription_response(); + let b_responses = self.1.into_subscription_response(); + + match (a_responses, b_responses) { + (Err(a), _) => { + Err(a) + }, + (_, Err(b)) => { + Err(b) + }, + (Ok(mut a), Ok(b)) => { + a.stream = Box::pin(a.stream.chain(b.stream)); + a.id = a.id.or(b.id); + Ok(a) + } + } + } +} + +/// Send back either one response or the other. +pub enum Either { + /// The first possibility. + A(A), + /// The second possibility. + B(B) +} + +impl IntoHandlerResponse for Either { + fn into_handler_response(self) -> Result, Error> { + match self { + Either::A(a) => a.into_handler_response(), + Either::B(b) => b.into_handler_response(), + } + } +} + +impl IntoSubscriptionResponse for Either { + fn into_subscription_response(self) -> Result { + match self { + Either::A(a) => a.into_subscription_response(), + Either::B(b) => b.into_subscription_response(), + } + } +} + + +#[cfg(test)] +mod test { + use crate::{RpcClient, rpc_params}; + use super::*; + + #[tokio::test] + async fn test_method_params() { + let rpc_client = MockRpcClient::builder() + .method_handler("foo", |params| async { + Json(params) + }) + .build(); + + let rpc_client = RpcClient::new(rpc_client); + + // We get back whatever params we give + let res: (i32,i32,i32) = rpc_client.request("foo", rpc_params![1, 2, 3]).await.unwrap(); + assert_eq!(res, (1,2,3)); + + let res: (String,) = rpc_client.request("foo", rpc_params!["hello"]).await.unwrap(); + assert_eq!(res, ("hello".to_owned(),)); + } + + #[tokio::test] + async fn test_method_handler_then_fallback() { + let rpc_client = MockRpcClient::builder() + .method_handler("foo", |_params| async { + Json(1) + }) + .method_fallback(|name, _params| async { + Json(name) + }) + .build(); + + let rpc_client = RpcClient::new(rpc_client); + + // Whenever we call "foo", we get 1 back. + for i in [1,1,1,1] { + let res: i32 = rpc_client.request("foo", rpc_params![]).await.unwrap(); + assert_eq!(res, i); + } + + // Whenever we call anything else, we get the name of the method back + for name in ["bar", "wibble", "steve"] { + let res: String = rpc_client.request(name, rpc_params![]).await.unwrap(); + assert_eq!(res, name); + } + } + + #[tokio::test] + async fn test_method_once_then_handler() { + let rpc_client = MockRpcClient::builder() + .method_handler_once("foo", |_params| async { + Json(1) + }) + .method_handler("foo", |_params| async { + Json(2) + }) + .build(); + + let rpc_client = RpcClient::new(rpc_client); + + // Check that we call the "once" one time and then the second after that. + for i in [1,2,2,2,2] { + let res: i32 = rpc_client.request("foo", rpc_params![]).await.unwrap(); + assert_eq!(res, i); + } + } + + #[tokio::test] + async fn test_method_once() { + let rpc_client = MockRpcClient::builder() + .method_handler_once("foo", |_params| async { + Json(1) + }) + .method_handler_once("foo", |_params| async { + Json(2) + }) + .method_handler_once("foo", |_params| async { + Json(3) + }) + .build(); + + let rpc_client = RpcClient::new(rpc_client); + + // Check that each method is only called once, in the right order. + for i in [1,2,3] { + let res: i32 = rpc_client.request("foo", rpc_params![]).await.unwrap(); + assert_eq!(res, i); + } + + // Check that we get a "method not found" error afterwards. + let err = rpc_client.request::("foo", rpc_params![]).await.unwrap_err(); + let not_found_code = UserError::method_not_found().code; + assert!(matches!(err, Error::User(u) if u.code == not_found_code)); + } + + #[tokio::test] + async fn test_subscription_once_then_handler_then_fallback() { + let rpc_client = MockRpcClient::builder() + .subscription_handler_once("foo", |_params, _unsub| async { + vec![Json(0), Json(0)] + }) + .subscription_handler("foo", |_params, _unsub| async { + vec![Json(1), Json(2), Json(3)] + }) + .subscription_fallback(|_name, _params, _unsub| async { + vec![Json(4)] + }) + .build(); + + let rpc_client = RpcClient::new(rpc_client); + + // "foo" returns 0,0 the first time it's subscribed to + let sub = rpc_client.subscribe::("foo", rpc_params![], "unsub").await.unwrap(); + let res: Vec = sub.map(|i| i.unwrap()).collect().await; + assert_eq!(res, vec![0,0]); + + // then, "foo" returns 1,2,3 in subscription every other time + for _ in 1..5 { + let sub = rpc_client.subscribe::("foo", rpc_params![], "unsub").await.unwrap(); + let res: Vec = sub.map(|i| i.unwrap()).collect().await; + assert_eq!(res, vec![1,2,3]); + } + + // anything else returns 4 + let sub = rpc_client.subscribe::("bar", rpc_params![], "unsub").await.unwrap(); + let res: Vec = sub.map(|i| i.unwrap()).collect().await; + assert_eq!(res, vec![4]); + } + + #[tokio::test] + async fn test_subscription_and_then_with_channel() { + let (tx, rx) = tokio::sync::mpsc::channel(10); + + let rpc_client = MockRpcClient::builder() + .subscription_handler_once("foo", move |_params, _unsub| async move { + AndThen( + // These should be sent first.. + vec![Json(1), Json(2), Json(3)], + // .. and then anything the channel is handing back. + rx + ) + }) + .build(); + + let rpc_client = RpcClient::new(rpc_client); + + // Send a few values down the channel to be handed back in "foo" subscription: + tokio::spawn(async move { + for i in 4..=6 { + tokio::time::sleep(tokio::time::Duration::from_millis(100)).await; + tx.send(Json(i)).await.unwrap(); + } + }); + + // Expect all values back: + let sub = rpc_client.subscribe::("foo", rpc_params![], "unsub").await.unwrap(); + let res: Vec = sub.map(|i| i.unwrap()).collect().await; + assert_eq!(res, vec![1,2,3,4,5,6]); + } +} \ No newline at end of file diff --git a/rpcs/src/client/mod.rs b/rpcs/src/client/mod.rs new file mode 100644 index 0000000000..0e4e29c0c0 --- /dev/null +++ b/rpcs/src/client/mod.rs @@ -0,0 +1,52 @@ +// Copyright 2019-2025 Parity Technologies (UK) Ltd. +// This file is dual-licensed as Apache-2.0 or GPL-3.0. +// see LICENSE for license details. + +//! RPC types and client for interacting with a substrate node. +//! +//! An RPC client is instantiated and then used to create some methods, for instance +//! [`crate::methods::ChainHeadRpcMethods`], which defines the calls that can be made with it. +//! The core RPC client bits are: +//! +//! - [`RpcClientT`] is the underlying dynamic RPC implementation. This provides +//! the low level [`RpcClientT::request_raw`] and [`RpcClientT::subscribe_raw`] +//! methods. +//! - [`RpcClient`] is the higher level wrapper around this, offering +//! the [`RpcClient::request`] and [`RpcClient::subscribe`] methods. +//! +//! We then expose implementations here (depending on which features are enabled) +//! which implement [`RpcClientT`] and can therefore be used to construct [`RpcClient`]s. +//! +//! - **jsonrpsee**: Enable an RPC client based on `jsonrpsee`. +//! - **unstable-light-client**: Enable an RPC client which uses the Smoldot light client under +//! the hood to communicate with the network of choice. +//! - **reconnecting-rpc-client**: Enable an RPC client based on `jsonrpsee` which handles +//! reconnecting automatically in the event of network issues. +//! - **mock-rpc-client**: Enable a mock RPC client that can be used in tests. +//! + +crate::macros::cfg_jsonrpsee! { + mod jsonrpsee_impl; + pub use jsonrpsee::core::client::Client as JsonrpseeRpcClient; +} + +crate::macros::cfg_unstable_light_client! { + mod lightclient_impl; + pub use subxt_lightclient::LightClientRpc as LightClientRpcClient; +} + +crate::macros::cfg_reconnecting_rpc_client! { + pub mod reconnecting_rpc_client; + pub use reconnecting_rpc_client::RpcClient as ReconnectingRpcClient; +} + +crate::macros::cfg_mock_rpc_client! { + pub mod mock_rpc_client; + pub use mock_rpc_client::MockRpcClient; +} + +mod rpc_client; +mod rpc_client_t; + +pub use rpc_client::{rpc_params, RpcClient, RpcParams, RpcSubscription}; +pub use rpc_client_t::{RawRpcFuture, RawRpcSubscription, RawValue, RpcClientT}; diff --git a/subxt/src/backend/rpc/reconnecting_rpc_client/mod.rs b/rpcs/src/client/reconnecting_rpc_client/mod.rs similarity index 91% rename from subxt/src/backend/rpc/reconnecting_rpc_client/mod.rs rename to rpcs/src/client/reconnecting_rpc_client/mod.rs index 41f7555f80..9d03927236 100644 --- a/subxt/src/backend/rpc/reconnecting_rpc_client/mod.rs +++ b/rpcs/src/client/reconnecting_rpc_client/mod.rs @@ -1,4 +1,4 @@ -// Copyright 2019-2024 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. @@ -10,42 +10,7 @@ //! //! The logic which action to take for individual calls and subscriptions are //! handled by the subxt backend implementations. -//! -//! # Example -//! -//! ```no_run -//! use std::time::Duration; -//! use futures::StreamExt; -//! use subxt::backend::rpc::reconnecting_rpc_client::{RpcClient, ExponentialBackoff}; -//! use subxt::{OnlineClient, PolkadotConfig}; -//! -//! #[tokio::main] -//! async fn main() { -//! let rpc = RpcClient::builder() -//! .retry_policy(ExponentialBackoff::from_millis(100).max_delay(Duration::from_secs(10))) -//! .build("ws://localhost:9944".to_string()) -//! .await -//! .unwrap(); -//! -//! let subxt_client: OnlineClient = OnlineClient::from_rpc_client(rpc.clone()).await.unwrap(); -//! let mut blocks_sub = subxt_client.blocks().subscribe_finalized().await.unwrap(); -//! -//! while let Some(block) = blocks_sub.next().await { -//! let block = match block { -//! Ok(b) => b, -//! Err(e) => { -//! if e.is_disconnected_will_reconnect() { -//! println!("The RPC connection was lost and we may have missed a few blocks"); -//! continue; -//! } else { -//! panic!("Error: {}", e); -//! } -//! } -//! }; -//! println!("Block #{} ({})", block.number(), block.hash()); -//! } -//! } -//! ``` +//! mod platform; #[cfg(test)] @@ -60,7 +25,7 @@ use std::{ }; use super::{RawRpcFuture, RawRpcSubscription, RpcClientT}; -use crate::error::RpcError as SubxtRpcError; +use crate::Error as SubxtRpcError; use finito::Retry; use futures::{FutureExt, Stream, StreamExt, TryStreamExt}; @@ -427,13 +392,7 @@ impl RpcClientT for RpcClient { async { self.request(method.to_string(), params) .await - .map_err(|e| match e { - Error::DisconnectedWillReconnect(e) => { - SubxtRpcError::DisconnectedWillReconnect(e.to_string()) - } - Error::Dropped => SubxtRpcError::ClientError(Box::new(e)), - Error::RpcError(e) => SubxtRpcError::ClientError(Box::new(e)), - }) + .map_err(error_to_rpc_error) } .boxed() } @@ -448,7 +407,7 @@ impl RpcClientT for RpcClient { let sub = self .subscribe(sub.to_string(), params, unsub.to_string()) .await - .map_err(|e| SubxtRpcError::ClientError(Box::new(e)))?; + .map_err(error_to_rpc_error)?; let id = match sub.id() { SubscriptionId::Num(n) => n.to_string(), @@ -471,6 +430,27 @@ impl RpcClientT for RpcClient { } } +/// Convert a reconnecting client Error into the RPC error in this crate. +/// The main reason for this is to capture user errors so that +/// they can be represented/handled without casting. +fn error_to_rpc_error(error: Error) -> SubxtRpcError { + match error { + Error::DisconnectedWillReconnect(reason) => { + SubxtRpcError::DisconnectedWillReconnect(reason.to_string()) + }, + Error::RpcError(RpcError::Call(e)) => { + SubxtRpcError::User(crate::UserError { + code: e.code(), + message: e.message().to_owned(), + data: e.data().map(|d| d.to_owned()) + }) + }, + e => { + SubxtRpcError::Client(Box::new(e)) + } + } +} + async fn background_task

( mut client: Arc, mut rx: UnboundedReceiver, diff --git a/subxt/src/backend/rpc/reconnecting_rpc_client/platform.rs b/rpcs/src/client/reconnecting_rpc_client/platform.rs similarity index 94% rename from subxt/src/backend/rpc/reconnecting_rpc_client/platform.rs rename to rpcs/src/client/reconnecting_rpc_client/platform.rs index 6248fcafdd..2fc9965bb6 100644 --- a/subxt/src/backend/rpc/reconnecting_rpc_client/platform.rs +++ b/rpcs/src/client/reconnecting_rpc_client/platform.rs @@ -1,8 +1,8 @@ -// Copyright 2019-2024 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. -use crate::backend::rpc::reconnecting_rpc_client::{RpcClientBuilder, RpcError}; +use super::{RpcClientBuilder, RpcError}; use jsonrpsee::core::client::Client; use std::sync::Arc; use url::Url; diff --git a/subxt/src/backend/rpc/reconnecting_rpc_client/tests.rs b/rpcs/src/client/reconnecting_rpc_client/tests.rs similarity index 99% rename from subxt/src/backend/rpc/reconnecting_rpc_client/tests.rs rename to rpcs/src/client/reconnecting_rpc_client/tests.rs index 7159cd4792..ae370a4425 100644 --- a/subxt/src/backend/rpc/reconnecting_rpc_client/tests.rs +++ b/rpcs/src/client/reconnecting_rpc_client/tests.rs @@ -1,4 +1,4 @@ -// Copyright 2019-2024 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. diff --git a/subxt/src/backend/rpc/reconnecting_rpc_client/utils.rs b/rpcs/src/client/reconnecting_rpc_client/utils.rs similarity index 70% rename from subxt/src/backend/rpc/reconnecting_rpc_client/utils.rs rename to rpcs/src/client/reconnecting_rpc_client/utils.rs index 880708dcdf..5430403661 100644 --- a/subxt/src/backend/rpc/reconnecting_rpc_client/utils.rs +++ b/rpcs/src/client/reconnecting_rpc_client/utils.rs @@ -1,10 +1,10 @@ -// Copyright 2019-2024 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. //! Utils. -use crate::backend::rpc::reconnecting_rpc_client::RpcError; +use super::RpcError; pub fn display_close_reason(err: &RpcError) -> String { match err { diff --git a/subxt/src/backend/rpc/rpc_client.rs b/rpcs/src/client/rpc_client.rs similarity index 92% rename from subxt/src/backend/rpc/rpc_client.rs rename to rpcs/src/client/rpc_client.rs index 16dba9e6fb..f7a6ccf8b8 100644 --- a/subxt/src/backend/rpc/rpc_client.rs +++ b/rpcs/src/client/rpc_client.rs @@ -1,17 +1,16 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. use super::{RawRpcSubscription, RpcClientT}; -use crate::error::Error; +use crate::Error; use futures::{Stream, StreamExt}; use serde::{de::DeserializeOwned, Serialize}; use serde_json::value::RawValue; use std::{pin::Pin, sync::Arc, task::Poll}; -/// A concrete wrapper around an [`RpcClientT`] which provides some higher level helper methods, -/// is cheaply cloneable, and can be handed to things like [`crate::client::OnlineClient`] to -/// instantiate it. +/// A concrete wrapper around an [`RpcClientT`] which provides some higher level helper methods +/// and is cheaply cloneable. #[derive(Clone)] pub struct RpcClient { client: Arc, @@ -35,7 +34,7 @@ impl RpcClient { pub async fn from_insecure_url>(url: U) -> Result { let client = jsonrpsee_helpers::client(url.as_ref()) .await - .map_err(|e| crate::error::RpcError::ClientError(Box::new(e)))?; + .map_err(|e| Error::Client(Box::new(e)))?; Ok(Self::new(client)) } @@ -56,7 +55,7 @@ impl RpcClient { params: RpcParams, ) -> Result { let res = self.client.request_raw(method, params.build()).await?; - let val = serde_json::from_str(res.get())?; + let val = serde_json::from_str(res.get()).map_err(Error::Deserialization)?; Ok(val) } @@ -108,7 +107,7 @@ impl std::ops::Deref for RpcClient { /// # Example /// /// ```rust -/// use subxt::backend::rpc::{ rpc_params, RpcParams }; +/// use subxt_rpcs::client::{ rpc_params, RpcParams }; /// /// // If you provide no params you get `None` back /// let params: RpcParams = rpc_params![]; @@ -123,7 +122,7 @@ macro_rules! rpc_params { ($($p:expr), *) => {{ // May be unused if empty; no params. #[allow(unused_mut)] - let mut params = $crate::backend::rpc::RpcParams::new(); + let mut params = $crate::client::RpcParams::new(); $( params.push($p).expect("values passed to rpc_params! must be serializable to JSON"); )* @@ -140,7 +139,7 @@ pub use rpc_params; /// # Example /// /// ```rust -/// use subxt::backend::rpc::RpcParams; +/// use subxt_rpcs::client::RpcParams; /// /// let mut params = RpcParams::new(); /// params.push(1).unwrap(); @@ -165,7 +164,7 @@ impl RpcParams { } else { self.0.push(b',') } - serde_json::to_writer(&mut self.0, ¶m)?; + serde_json::to_writer(&mut self.0, ¶m).map_err(Error::Deserialization)?; Ok(()) } /// Build a [`RawValue`] from our params, returning `None` if no parameters @@ -235,8 +234,9 @@ impl Stream for RpcSubscription { // Decode the inner RawValue to the type we're expecting and map // any errors to the right shape: let res = res.map(|r| { - r.map_err(|e| e.into()) - .and_then(|raw_val| serde_json::from_str(raw_val.get()).map_err(|e| e.into())) + r.and_then(|raw_val| { + serde_json::from_str(raw_val.get()).map_err(Error::Deserialization) + }) }); Poll::Ready(res) diff --git a/subxt/src/backend/rpc/rpc_client_t.rs b/rpcs/src/client/rpc_client_t.rs similarity index 91% rename from subxt/src/backend/rpc/rpc_client_t.rs rename to rpcs/src/client/rpc_client_t.rs index 98d349d17c..3ef0634fc9 100644 --- a/subxt/src/backend/rpc/rpc_client_t.rs +++ b/rpcs/src/client/rpc_client_t.rs @@ -1,8 +1,8 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. -use crate::error::RpcError; +use crate::Error; use futures::Stream; use std::{future::Future, pin::Pin}; @@ -10,8 +10,8 @@ use std::{future::Future, pin::Pin}; pub use serde_json::value::RawValue; /// A trait describing low level JSON-RPC interactions. Implementations of this can be -/// used to instantiate a [`super::RpcClient`], which can be passed to [`crate::OnlineClient`] -/// or used for lower level RPC calls via eg [`crate::backend::legacy::LegacyRpcMethods`]. +/// used to instantiate a [`super::RpcClient`], used for lower level RPC calls via eg +/// [`crate::methods::LegacyRpcMethods`] and [`crate::methods::ChainHeadRpcMethods`]. /// /// This is a low level interface whose methods expect an already-serialized set of params, /// and return an owned but still-serialized [`RawValue`], deferring deserialization to @@ -54,12 +54,12 @@ pub trait RpcClientT: Send + Sync + 'static { } /// A boxed future that is returned from the [`RpcClientT`] methods. -pub type RawRpcFuture<'a, T> = Pin> + Send + 'a>>; +pub type RawRpcFuture<'a, T> = Pin> + Send + 'a>>; /// The RPC subscription returned from [`RpcClientT`]'s `subscription` method. pub struct RawRpcSubscription { /// The subscription stream. - pub stream: Pin, RpcError>> + Send + 'static>>, + pub stream: Pin, Error>> + Send + 'static>>, /// The ID associated with the subscription. pub id: Option, } diff --git a/rpcs/src/lib.rs b/rpcs/src/lib.rs new file mode 100644 index 0000000000..e6db55fe40 --- /dev/null +++ b/rpcs/src/lib.rs @@ -0,0 +1,147 @@ +// Copyright 2019-2025 Parity Technologies (UK) Ltd. +// This file is dual-licensed as Apache-2.0 or GPL-3.0. +// see LICENSE for license details. + +//! This crate provides a low level RPC interface to Substrate based nodes. +//! +//! See the [`client`] module for a [`client::RpcClient`] which is driven by implementations +//! of [`client::RpcClientT`] (several of which are provided behind feature flags). +//! +//! See the [`methods`] module for structs which implement sets of concrete RPC calls for +//! communicating with Substrate based nodes. These structs are all driven by a [`client::RpcClient`]. +//! +//! The RPC clients/methods here are made use of in `subxt`. Enabling the `subxt` feature flag ensures +//! that all Subxt configurations are also valid RPC configurations. +//! +//! The provided RPC client implementations can be used natively (with the default `native` feature +//! flag) or in WASM based web apps (with the `web` feature flag). + +#[cfg(any( + all(feature = "web", feature = "native"), + not(any(feature = "web", feature = "native")) +))] +compile_error!("subxt-rpcs: exactly one of the 'web' and 'native' features should be used."); + +mod macros; + +pub mod client; +pub mod methods; +pub mod utils; + +// Used to enable the js feature for wasm. +#[cfg(feature = "web")] +#[allow(unused_imports)] +pub use getrandom as _; + +// Expose the most common things at the top level: +pub use client::{RpcClient, RpcClientT}; +pub use methods::{ChainHeadRpcMethods, LegacyRpcMethods}; + +/// Configuration used by some of the RPC methods to determine the shape of +/// some of the inputs or responses. +pub trait RpcConfig { + /// The block header type. + type Header: Header; + /// The block hash type. + type Hash: BlockHash; + /// The Account ID type. + type AccountId: AccountId; +} + +/// A trait which is applied to any type that is a valid block header. +pub trait Header: std::fmt::Debug + codec::Decode + serde::de::DeserializeOwned {} +impl Header for T where T: std::fmt::Debug + codec::Decode + serde::de::DeserializeOwned {} + +/// A trait which is applied to any type that is a valid block hash. +pub trait BlockHash: serde::de::DeserializeOwned + serde::Serialize {} +impl BlockHash for T where T: serde::de::DeserializeOwned + serde::Serialize {} + +/// A trait which is applied to any type that is a valid Account ID. +pub trait AccountId: serde::Serialize {} +impl AccountId for T where T: serde::Serialize {} + +// When the subxt feature is enabled, ensure that any valid `subxt::Config` +// is also a valid `RpcConfig`. +#[cfg(feature = "subxt")] +mod impl_config { + use super::*; + impl RpcConfig for T + where + T: subxt_core::Config, + { + type Header = T::Header; + type Hash = T::Hash; + type AccountId = T::AccountId; + } +} + +/// This encapsulates any errors that could be emitted in this crate. +#[derive(Debug, thiserror::Error)] +#[non_exhaustive] +pub enum Error { + /// An error which indicates a user fault. + #[error("User error: {0}")] + User(#[from] UserError), + // Dev note: We need the error to be safely sent between threads + // for `subscribe_to_block_headers_filling_in_gaps` and friends. + /// An error coming from the underlying RPC Client. + #[error("RPC error: client error: {0}")] + Client(Box), + /// The connection was lost and the client will automatically reconnect. Clients + /// should only emit this if they are internally reconnecting, and will buffer any + /// calls made to them in the meantime until the connection is re-established. + #[error("RPC error: the connection was lost ({0}); reconnect automatically initiated")] + DisconnectedWillReconnect(String), + /// Cannot deserialize the response. + #[error("RPC error: cannot deserialize response: {0}")] + Deserialization(serde_json::Error), + /// Cannot SCALE decode some part of the response. + #[error("RPC error: cannot SCALE decode some part of the response: {0}")] + Decode(codec::Error), + /// The requested URL is insecure. + #[error("RPC error: insecure URL: {0}")] + InsecureUrl(String), +} + +impl Error { + /// Is the error the `DisconnectedWillReconnect` variant? This should be true + /// only if the underlying `RpcClient` implementation was disconnected and is + /// automatically reconnecting behind the scenes. + pub fn is_disconnected_will_reconnect(&self) -> bool { + matches!(self, Error::DisconnectedWillReconnect(_)) + } +} + +/// This error should be returned when the user is at fault making a call, +/// for instance because the method name was wrong, parameters invalid or some +/// invariant not upheld. Implementations of [`RpcClientT`] should turn any such +/// errors into this, so that they can be handled appropriately. By contrast, +/// [`Error::Client`] is emitted when the underlying RPC Client implementation +/// has some problem that isn't user specific (eg network issues or similar). +#[derive(Debug, Clone, serde::Deserialize, thiserror::Error)] +#[serde(deny_unknown_fields)] +pub struct UserError { + /// Code + pub code: i32, + /// Message + pub message: String, + /// Optional data + pub data: Option>, +} + +impl UserError { + /// Returns a standard JSON-RPC "method not found" error. + pub fn method_not_found() -> UserError { + UserError { + code: -32601, + message: "Method not found".to_owned(), + data: None, + } + } +} + +impl core::fmt::Display for UserError { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "{} ({})", &self.message, &self.code) + } +} diff --git a/rpcs/src/macros.rs b/rpcs/src/macros.rs new file mode 100644 index 0000000000..dc6b8fa195 --- /dev/null +++ b/rpcs/src/macros.rs @@ -0,0 +1,46 @@ +// Copyright 2019-2025 Parity Technologies (UK) Ltd. +// This file is dual-licensed as Apache-2.0 or GPL-3.0. +// see LICENSE for license details. + +macro_rules! cfg_feature { + ($feature:literal, $($item:item)*) => { + $( + #[cfg(feature = $feature)] + #[cfg_attr(docsrs, doc(cfg(feature = $feature)))] + $item + )* + } +} + +macro_rules! cfg_unstable_light_client { + ($($item:item)*) => { + crate::macros::cfg_feature!("unstable-light-client", $($item)*); + }; +} + +macro_rules! cfg_jsonrpsee { + ($($item:item)*) => { + crate::macros::cfg_feature!("jsonrpsee", $($item)*); + }; +} + +macro_rules! cfg_reconnecting_rpc_client { + ($($item:item)*) => { + $( + #[cfg(all(feature = "reconnecting-rpc-client", any(feature = "native", feature = "web")))] + #[cfg_attr(docsrs, doc(cfg(feature = "reconnecting-rpc-client")))] + $item + )* + } +} + +macro_rules! cfg_mock_rpc_client { + ($($item:item)*) => { + crate::macros::cfg_feature!("mock-rpc-client", $($item)*); + }; +} + +pub(crate) use { + cfg_feature, cfg_jsonrpsee, cfg_mock_rpc_client, cfg_reconnecting_rpc_client, + cfg_unstable_light_client, +}; diff --git a/subxt/src/backend/chain_head/rpc_methods.rs b/rpcs/src/methods/chain_head.rs similarity index 99% rename from subxt/src/backend/chain_head/rpc_methods.rs rename to rpcs/src/methods/chain_head.rs index a9779788a3..6b7c958172 100644 --- a/subxt/src/backend/chain_head/rpc_methods.rs +++ b/rpcs/src/methods/chain_head.rs @@ -1,4 +1,4 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. @@ -6,9 +6,9 @@ //! for details of the API //! methods exposed here. -use crate::backend::rpc::{rpc_params, RpcClient, RpcSubscription}; -use crate::config::BlockHash; -use crate::{Config, Error}; +use crate::client::{rpc_params, RpcClient, RpcSubscription}; +use crate::BlockHash; +use crate::{Error, RpcConfig}; use derive_where::derive_where; use futures::{Stream, StreamExt}; use serde::{Deserialize, Deserializer, Serialize}; @@ -24,7 +24,7 @@ pub struct ChainHeadRpcMethods { _marker: std::marker::PhantomData, } -impl ChainHeadRpcMethods { +impl ChainHeadRpcMethods { /// Instantiate the legacy RPC method interface. pub fn new(client: RpcClient) -> Self { ChainHeadRpcMethods { @@ -139,7 +139,8 @@ impl ChainHeadRpcMethods { let header = header .map(|h| codec::Decode::decode(&mut &*h.0)) - .transpose()?; + .transpose() + .map_err(Error::Decode)?; Ok(header) } diff --git a/subxt/src/backend/legacy/rpc_methods.rs b/rpcs/src/methods/legacy.rs similarity index 91% rename from subxt/src/backend/legacy/rpc_methods.rs rename to rpcs/src/methods/legacy.rs index 1beae0694e..0043c8801f 100644 --- a/subxt/src/backend/legacy/rpc_methods.rs +++ b/rpcs/src/methods/legacy.rs @@ -1,14 +1,14 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. +// Copyright 2019-2025 Parity Technologies (UK) Ltd. // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. //! An interface to call the raw legacy RPC methods. -use crate::backend::rpc::{rpc_params, RpcClient, RpcSubscription}; -use crate::metadata::Metadata; -use crate::{Config, Error}; +use crate::client::{rpc_params, RpcClient, RpcSubscription}; +use crate::{Error, RpcConfig}; use codec::Decode; use derive_where::derive_where; +use frame_metadata::RuntimeMetadataPrefixed; use primitive_types::U256; use serde::{Deserialize, Serialize}; @@ -21,7 +21,7 @@ pub struct LegacyRpcMethods { _marker: std::marker::PhantomData, } -impl LegacyRpcMethods { +impl LegacyRpcMethods { /// Instantiate the legacy RPC method interface. pub fn new(client: RpcClient) -> Self { LegacyRpcMethods { @@ -97,17 +97,19 @@ impl LegacyRpcMethods { let params = rpc_params![block_zero]; let genesis_hash: Option = self.client.request("chain_getBlockHash", params).await?; - genesis_hash.ok_or_else(|| "Genesis hash not found".into()) + genesis_hash.ok_or_else(|| Error::Client("Genesis hash not found".into())) } /// Fetch the metadata via the legacy `state_getMetadata` RPC method. - pub async fn state_get_metadata(&self, at: Option) -> Result { + pub async fn state_get_metadata( + &self, + at: Option, + ) -> Result { let bytes: Bytes = self .client .request("state_getMetadata", rpc_params![at]) .await?; - let metadata = Metadata::decode(&mut &bytes[..])?; - Ok(metadata) + Ok(StateGetMetadataResponse(bytes.0)) } /// Fetch system health @@ -140,10 +142,7 @@ impl LegacyRpcMethods { /// Fetch next nonce for an Account /// /// Return account nonce adjusted for extrinsics currently in transaction pool - pub async fn system_account_next_index(&self, account_id: &T::AccountId) -> Result - where - T::AccountId: Serialize, - { + pub async fn system_account_next_index(&self, account_id: &T::AccountId) -> Result { self.client .request("system_accountNextIndex", rpc_params![&account_id]) .await @@ -398,6 +397,22 @@ impl LegacyRpcMethods { } } +/// Response from the legacy `state_get_metadata` RPC call. +pub struct StateGetMetadataResponse(Vec); + +impl StateGetMetadataResponse { + /// Return the raw SCALE encoded metadata bytes + pub fn into_raw(self) -> Vec { + self.0 + } + /// Decode and return [`frame_metadata::RuntimeMetadataPrefixed`]. + pub fn to_frame_metadata( + &self, + ) -> Result { + RuntimeMetadataPrefixed::decode(&mut &*self.0) + } +} + /// Storage key. pub type StorageKey = Vec; @@ -426,8 +441,8 @@ pub type BlockNumber = NumberOrHex; /// The response from `chain_getBlock` #[derive(Debug, Deserialize)] -#[serde(bound = "T: Config")] -pub struct BlockDetails { +#[serde(bound = "T: RpcConfig")] +pub struct BlockDetails { /// The block itself. pub block: Block, /// Block justification. @@ -436,7 +451,7 @@ pub struct BlockDetails { /// Block details in the [`BlockDetails`]. #[derive(Debug, Deserialize)] -pub struct Block { +pub struct Block { /// The block header. pub header: T::Header, /// The accompanying extrinsics. @@ -511,11 +526,19 @@ pub enum TransactionStatus { /// The decoded result returned from calling `system_dryRun` on some extrinsic. #[derive(Debug, PartialEq, Eq)] -pub enum DryRunResult { +pub enum DryRunResult<'a> { /// The transaction could be included in the block and executed. Success, /// The transaction could be included in the block, but the call failed to dispatch. - DispatchError(crate::error::DispatchError), + /// If Subxt is available, the bytes here can be further decoded by calling: + /// + /// ```rust,ignore + /// subxt::error::DispatchError::decode_from(bytes, metadata)?; + /// ``` + /// + /// Where metadata is an instance of `subxt::Metadata` that is valid for the runtime + /// version which returned this error. + DispatchError(&'a [u8]), /// The transaction could not be included in the block. TransactionValidityError, } @@ -525,19 +548,16 @@ pub enum DryRunResult { pub struct DryRunResultBytes(pub Vec); impl DryRunResultBytes { - /// Attempt to decode the error bytes into a [`DryRunResult`] using the provided [`Metadata`]. - pub fn into_dry_run_result( - self, - metadata: &crate::metadata::Metadata, - ) -> Result { + /// Attempt to decode the error bytes into a [`DryRunResult`]. + pub fn into_dry_run_result(&self) -> Result, DryRunDecodeError> { // dryRun returns an ApplyExtrinsicResult, which is basically a // `Result, TransactionValidityError>`. - let bytes = self.0; + let bytes = &*self.0; // We expect at least 2 bytes. In case we got a naff response back (or // manually constructed this struct), just error to avoid a panic: if bytes.len() < 2 { - return Err(crate::Error::Unknown(bytes)); + return Err(DryRunDecodeError::WrongNumberOfBytes); } if bytes[0] == 0 && bytes[1] == 0 { @@ -545,19 +565,25 @@ impl DryRunResultBytes { Ok(DryRunResult::Success) } else if bytes[0] == 0 && bytes[1] == 1 { // Ok(Err(dispatch_error)); transaction is valid but execution failed - let dispatch_error = - crate::error::DispatchError::decode_from(&bytes[2..], metadata.clone())?; - Ok(DryRunResult::DispatchError(dispatch_error)) + Ok(DryRunResult::DispatchError(&bytes[2..])) } else if bytes[0] == 1 { // Err(transaction_error); some transaction validity error (we ignore the details at the moment) Ok(DryRunResult::TransactionValidityError) } else { // unable to decode the bytes; they aren't what we expect. - Err(crate::Error::Unknown(bytes)) + Err(DryRunDecodeError::InvalidBytes) } } } +/// An error which can be emitted when calling [`DryRunResultBytes::into_dry_run_result`]. +pub enum DryRunDecodeError { + /// The dry run result was less than 2 bytes, which is invalid. + WrongNumberOfBytes, + /// The dry run bytes are not valid. + InvalidBytes, +} + /// Storage change set #[derive(Clone, Serialize, Deserialize, PartialEq, Eq, Debug)] #[serde(rename_all = "camelCase")] diff --git a/rpcs/src/methods/mod.rs b/rpcs/src/methods/mod.rs new file mode 100644 index 0000000000..c61736bade --- /dev/null +++ b/rpcs/src/methods/mod.rs @@ -0,0 +1,20 @@ +// Copyright 2019-2025 Parity Technologies (UK) Ltd. +// This file is dual-licensed as Apache-2.0 or GPL-3.0. +// see LICENSE for license details. + +//! RPC methods are defined in this module. At the moment we have: +//! +//! - [`ChainHeadRpcMethods`] (and the types in [`chain_head`]): these methods +//! implement the RPC spec at +//! +//! We also have (although their use is not advised): +//! +//! - [`LegacyRpcMethods`] (and the types in [`legacy`]): a collection of legacy RPCs. +//! These are not well specified and may change in implementations without warning, +//! but for those methods we expose, we make a best effort to work against latest Substrate versions. + +pub mod chain_head; +pub mod legacy; + +pub use chain_head::ChainHeadRpcMethods; +pub use legacy::LegacyRpcMethods; diff --git a/rpcs/src/utils.rs b/rpcs/src/utils.rs new file mode 100644 index 0000000000..b77462f32e --- /dev/null +++ b/rpcs/src/utils.rs @@ -0,0 +1,33 @@ +// Copyright 2019-2025 Parity Technologies (UK) Ltd. +// This file is dual-licensed as Apache-2.0 or GPL-3.0. +// see LICENSE for license details. + +//! A couple of utility methods that we make use of. + +use crate::Error; +use url::Url; + +/// A URL is considered secure if it uses a secure scheme ("https" or "wss") or is referring to localhost. +/// +/// Returns an error if the string could not be parsed into a URL. +pub fn url_is_secure(url: &str) -> Result { + let url = Url::parse(url).map_err(|e| Error::Client(Box::new(e)))?; + + let secure_scheme = url.scheme() == "https" || url.scheme() == "wss"; + let is_localhost = url.host().is_some_and(|e| match e { + url::Host::Domain(e) => e == "localhost", + url::Host::Ipv4(e) => e.is_loopback(), + url::Host::Ipv6(e) => e.is_loopback(), + }); + + Ok(secure_scheme || is_localhost) +} + +/// Validates, that the given Url is secure ("https" or "wss" scheme) or is referring to localhost. +pub fn validate_url_is_secure(url: &str) -> Result<(), Error> { + if !url_is_secure(url)? { + Err(Error::InsecureUrl(url.into())) + } else { + Ok(()) + } +} diff --git a/signer/Cargo.toml b/signer/Cargo.toml index 90c11f6082..5d88160d46 100644 --- a/signer/Cargo.toml +++ b/signer/Cargo.toml @@ -54,7 +54,7 @@ web = ["getrandom/js"] subxt-core = { workspace = true, optional = true, default-features = false } secrecy = { workspace = true } regex = { workspace = true, features = ["unicode"] } -hex = { workspace = true, features = ["alloc"] } +hex = { workspace = true } cfg-if = { workspace = true } codec = { package = "parity-scale-codec", workspace = true, features = [ "derive", diff --git a/signer/tests/no-std/.gitignore b/signer/tests/no-std/.gitignore index 869df07dae..ea8c4bf7f3 100644 --- a/signer/tests/no-std/.gitignore +++ b/signer/tests/no-std/.gitignore @@ -1,2 +1 @@ /target -Cargo.lock \ No newline at end of file diff --git a/signer/tests/no-std/Cargo.lock b/signer/tests/no-std/Cargo.lock new file mode 100644 index 0000000000..99012dc1a2 --- /dev/null +++ b/signer/tests/no-std/Cargo.lock @@ -0,0 +1,1194 @@ +# This file is automatically @generated by Cargo. +# It is not intended for 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web/wasm builds. # Exactly 1 of "web" and "native" is expected. web = [ - "jsonrpsee?/async-wasm-client", - "jsonrpsee?/client-web-transport", - "jsonrpsee?/wasm-client", - "getrandom/js", "subxt-lightclient?/web", "subxt-macro/web", + "subxt-rpcs/web", "tokio?/sync", - "finito?/wasm-bindgen", ] # Feature flag to enable the default future executor. @@ -56,11 +50,13 @@ web = [ runtime = ["tokio/rt", "wasm-bindgen-futures"] # Enable this to use the reconnecting rpc client -reconnecting-rpc-client = ["dep:finito", "jsonrpsee"] +reconnecting-rpc-client = ["subxt-rpcs/reconnecting-rpc-client"] -# Enable this to use jsonrpsee (allowing for example `OnlineClient::from_url`). +# Enable this to use jsonrpsee, which enables the jsonrpsee RPC client, and +# a couple of util functions which rely on jsonrpsee. jsonrpsee = [ "dep:jsonrpsee", + "subxt-rpcs/jsonrpsee", "runtime" ] @@ -72,7 +68,7 @@ unstable-metadata = [] # Activate this to expose the Light Client functionality. # Note that this feature is experimental and things may break or not work as expected. -unstable-light-client = ["subxt-lightclient"] +unstable-light-client = ["subxt-lightclient", "subxt-rpcs/unstable-light-client"] # Activate this to expose the ability to generate metadata from Wasm runtime files. runtime-metadata-path = ["subxt-macro/runtime-metadata-path"] @@ -98,7 +94,6 @@ either = { workspace = true } web-time = { workspace = true } # Provides some deserialization, types like U256/H256 and hashing impls like twox/blake256: -impl-serde = { workspace = true } primitive-types = { workspace = true, features = ["codec", "scale-info", "serde"] } # Included if the "jsonrpsee" feature is enabled. @@ -109,13 +104,11 @@ subxt-macro = { workspace = true } subxt-core = { workspace = true, features = ["std"] } subxt-metadata = { workspace = true, features = ["std"] } subxt-lightclient = { workspace = true, optional = true, default-features = false } +subxt-rpcs = { workspace = true, features = ["subxt"] } # For parsing urls to disallow insecure schemes url = { workspace = true } -# Included if "web" feature is enabled, to enable its js feature. -getrandom = { workspace = true, optional = true } - # Included if "native" feature is enabled tokio-util = { workspace = true, features = ["compat"], optional = true } @@ -123,7 +116,6 @@ tokio-util = { workspace = true, features = ["compat"], optional = true } # Only the `tokio/sync` is used in the reconnecting rpc client # and that compiles both for native and web. tokio = { workspace = true, optional = true } -finito = { workspace = true, optional = true } wasm-bindgen-futures = { workspace = true, optional = true } [dev-dependencies] @@ -134,6 +126,7 @@ tokio = { workspace = true, features = ["macros", "time", "rt-multi-thread", "sy polkadot-sdk = { workspace = true, features = ["sp-core", "sp-keyring", "sp-runtime", "std"] } assert_matches = { workspace = true } subxt-signer = { path = "../signer", features = ["unstable-eth"] } +subxt-rpcs = { workspace = true, features = ["subxt", "mock-rpc-client"] } # Tracing subscriber is useful for light-client examples to ensure that # the `bootNodes` and chain spec are configured correctly. If all is fine, then # the light-client wlll emit INFO logs with @@ -141,9 +134,9 @@ subxt-signer = { path = "../signer", features = ["unstable-eth"] } tracing-subscriber = { workspace = true } # These deps are needed to test the reconnecting rpc client jsonrpsee = { workspace = true, features = ["server"] } -tower = "0.4" -hyper = "1" -http-body = "1" +tower = { workspace = true } +hyper = { workspace = true } +http-body = { workspace = true } [[example]] name = "light_client_basic" diff --git a/subxt/src/backend/chain_head/follow_stream.rs b/subxt/src/backend/chain_head/follow_stream.rs index f68d3ba0be..0fecd3bc89 100644 --- a/subxt/src/backend/chain_head/follow_stream.rs +++ b/subxt/src/backend/chain_head/follow_stream.rs @@ -2,13 +2,13 @@ // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. -use super::rpc_methods::{ChainHeadRpcMethods, FollowEvent}; use crate::config::Config; use crate::error::Error; -use futures::{FutureExt, Stream, StreamExt}; +use futures::{FutureExt, Stream, StreamExt, TryStreamExt}; use std::future::Future; use std::pin::Pin; use std::task::{Context, Poll}; +use subxt_rpcs::methods::chain_head::{ChainHeadRpcMethods, FollowEvent}; /// A `Stream` whose goal is to remain subscribed to `chainHead_follow`. It will re-subscribe if the subscription /// is ended for any reason, and it will return the current `subscription_id` as an event, along with the other @@ -113,8 +113,10 @@ impl FollowStream { .to_owned(), )); }; - // Return both: + // Map stream errors into the higher level subxt one: + let stream = stream.map_err(|e| e.into()); let stream: FollowEventStream = Box::pin(stream); + // Return both: Ok((stream, sub_id)) }) }), @@ -215,12 +217,10 @@ impl Stream for FollowStream { #[cfg(test)] pub(super) mod test_utils { use super::*; - use crate::backend::chain_head::rpc_methods::{ - BestBlockChanged, Finalized, Initialized, NewBlock, - }; use crate::config::substrate::H256; use std::sync::atomic::{AtomicUsize, Ordering}; use std::sync::Arc; + use subxt_rpcs::methods::chain_head::{BestBlockChanged, Finalized, Initialized, NewBlock}; /// Given some events, returns a follow stream getter that we can use in /// place of the usual RPC method. diff --git a/subxt/src/backend/chain_head/follow_stream_driver.rs b/subxt/src/backend/chain_head/follow_stream_driver.rs index 833d77fc65..70c49dbf4c 100644 --- a/subxt/src/backend/chain_head/follow_stream_driver.rs +++ b/subxt/src/backend/chain_head/follow_stream_driver.rs @@ -3,7 +3,6 @@ // see LICENSE for license details. use super::follow_stream_unpin::{BlockRef, FollowStreamMsg, FollowStreamUnpin}; -use crate::backend::chain_head::rpc_methods::{FollowEvent, Initialized, RuntimeEvent}; use crate::config::BlockHash; use crate::error::{Error, RpcError}; use futures::stream::{Stream, StreamExt}; @@ -12,6 +11,7 @@ use std::ops::DerefMut; use std::pin::Pin; use std::sync::{Arc, Mutex}; use std::task::{Context, Poll, Waker}; +use subxt_rpcs::methods::chain_head::{FollowEvent, Initialized, RuntimeEvent}; /// A `Stream` which builds on `FollowStreamDriver`, and allows multiple subscribers to obtain events /// from the single underlying subscription (each being provided an `Initialized` message and all new @@ -454,8 +454,11 @@ where .iter() .position(|b| b.hash() == p.hash()) else { - return Poll::Ready(Some(Err(RpcError::DisconnectedWillReconnect( - "Missed at least one block when the connection was lost".to_owned(), + return Poll::Ready(Some(Err(RpcError::ClientError( + subxt_rpcs::Error::DisconnectedWillReconnect( + "Missed at least one block when the connection was lost" + .to_owned(), + ), ) .into()))); }; @@ -739,7 +742,7 @@ mod test { ) ); assert!( - matches!(&evs[1], Err(Error::Rpc(RpcError::DisconnectedWillReconnect(e))) if e.contains("Missed at least one block when the connection was lost")) + matches!(&evs[1], Err(Error::Rpc(RpcError::ClientError(subxt_rpcs::Error::DisconnectedWillReconnect(e)))) if e.contains("Missed at least one block when the connection was lost")) ); assert_eq!( evs[2].as_ref().unwrap(), diff --git a/subxt/src/backend/chain_head/follow_stream_unpin.rs b/subxt/src/backend/chain_head/follow_stream_unpin.rs index 0ae0ef0a89..a3aca94a34 100644 --- a/subxt/src/backend/chain_head/follow_stream_unpin.rs +++ b/subxt/src/backend/chain_head/follow_stream_unpin.rs @@ -4,12 +4,12 @@ use super::follow_stream::FollowStream; use super::ChainHeadRpcMethods; -use crate::backend::chain_head::rpc_methods::{ - BestBlockChanged, Finalized, FollowEvent, Initialized, NewBlock, -}; use crate::config::{BlockHash, Config}; use crate::error::Error; use futures::stream::{FuturesUnordered, Stream, StreamExt}; +use subxt_rpcs::methods::chain_head::{ + BestBlockChanged, Finalized, FollowEvent, Initialized, NewBlock, +}; use std::collections::{HashMap, HashSet}; use std::future::Future; diff --git a/subxt/src/backend/chain_head/mod.rs b/subxt/src/backend/chain_head/mod.rs index 9a75543ee9..f09148d6cd 100644 --- a/subxt/src/backend/chain_head/mod.rs +++ b/subxt/src/backend/chain_head/mod.rs @@ -16,15 +16,10 @@ mod follow_stream_driver; mod follow_stream_unpin; mod storage_items; -pub mod rpc_methods; - use self::follow_stream_driver::FollowStreamFinalizedHeads; -use self::rpc_methods::{ - FollowEvent, MethodResponse, RuntimeEvent, StorageQuery, StorageQueryType, StorageResultType, -}; use crate::backend::{ - rpc::RpcClient, utils::retry, Backend, BlockRef, BlockRefT, RuntimeVersion, StorageResponse, - StreamOf, StreamOfResults, TransactionStatus, + utils::retry, Backend, BlockRef, BlockRefT, RuntimeVersion, StorageResponse, StreamOf, + StreamOfResults, TransactionStatus, }; use crate::config::BlockHash; use crate::error::{Error, RpcError}; @@ -36,9 +31,18 @@ use futures::{Stream, StreamExt}; use std::collections::HashMap; use std::task::Poll; use storage_items::StorageItems; +use subxt_rpcs::methods::chain_head::{ + FollowEvent, MethodResponse, RuntimeEvent, StorageQuery, StorageQueryType, StorageResultType, +}; +use subxt_rpcs::RpcClient; + +/// Re-export RPC types and methods from [`subxt_rpcs::methods::chain_head`]. +pub mod rpc_methods { + pub use subxt_rpcs::methods::legacy::*; +} // Expose the RPC methods. -pub use rpc_methods::ChainHeadRpcMethods; +pub use subxt_rpcs::methods::chain_head::ChainHeadRpcMethods; /// Configure and build an [`ChainHeadBackend`]. pub struct ChainHeadBackendBuilder { @@ -213,7 +217,7 @@ impl ChainHeadBackend { let header = match res { Ok(header) => header, - Err(e) => return Some(Err(e)), + Err(e) => return Some(Err(e.into())), }; Some(Ok((header, block_ref.into()))) @@ -338,13 +342,18 @@ impl Backend for ChainHeadBackend { } async fn genesis_hash(&self) -> Result { - retry(|| self.methods.chainspec_v1_genesis_hash()).await + retry(|| async { + let genesis_hash = self.methods.chainspec_v1_genesis_hash().await?; + Ok(genesis_hash) + }) + .await } async fn block_header(&self, at: T::Hash) -> Result, Error> { retry(|| async { let sub_id = get_subscription_id(&self.follow_handle).await?; - self.methods.chainhead_v1_header(&sub_id, at).await + let header = self.methods.chainhead_v1_header(&sub_id, at).await?; + Ok(header) }) .await } @@ -357,9 +366,7 @@ impl Backend for ChainHeadBackend { let follow_events = self.follow_handle.subscribe().events(); let status = self.methods.chainhead_v1_body(&sub_id, at).await?; let operation_id = match status { - MethodResponse::LimitReached => { - return Err(RpcError::request_rejected("limit reached").into()) - } + MethodResponse::LimitReached => return Err(RpcError::LimitReached.into()), MethodResponse::Started(s) => s.operation_id, }; @@ -653,22 +660,21 @@ impl Backend for ChainHeadBackend { let tx_progress_ev = match tx_progress.poll_next_unpin(cx) { Poll::Pending => return Poll::Pending, Poll::Ready(None) => return Poll::Ready(err_other("No more transaction progress events, but we haven't seen a Finalized one yet")), - Poll::Ready(Some(Err(e))) => return Poll::Ready(Some(Err(e))), + Poll::Ready(Some(Err(e))) => return Poll::Ready(Some(Err(e.into()))), Poll::Ready(Some(Ok(ev))) => ev, }; // When we get one, map it to the correct format (or for finalized ev, wait for the pinned block): + use subxt_rpcs::methods::chain_head::TransactionStatus as RpcTransactionStatus; let tx_progress_ev = match tx_progress_ev { - rpc_methods::TransactionStatus::Finalized { block } => { + RpcTransactionStatus::Finalized { block } => { // We'll wait until we have seen this hash, to try to guarantee // that when we return this event, the corresponding block is // pinned and accessible. finalized_hash = Some(block.hash); continue; } - rpc_methods::TransactionStatus::BestChainBlockIncluded { - block: Some(block), - } => { + RpcTransactionStatus::BestChainBlockIncluded { block: Some(block) } => { // Look up a pinned block ref if we can, else return a non-pinned // block that likely isn't accessible. We have no guarantee that a best // block on the node a tx was sent to will ever be known about on the @@ -679,20 +685,20 @@ impl Backend for ChainHeadBackend { }; TransactionStatus::InBestBlock { hash: block_ref } } - rpc_methods::TransactionStatus::BestChainBlockIncluded { block: None } => { + RpcTransactionStatus::BestChainBlockIncluded { block: None } => { TransactionStatus::NoLongerInBestBlock } - rpc_methods::TransactionStatus::Broadcasted => TransactionStatus::Broadcasted, - rpc_methods::TransactionStatus::Dropped { error, .. } => { + RpcTransactionStatus::Broadcasted => TransactionStatus::Broadcasted, + RpcTransactionStatus::Dropped { error, .. } => { TransactionStatus::Dropped { message: error } } - rpc_methods::TransactionStatus::Error { error } => { + RpcTransactionStatus::Error { error } => { TransactionStatus::Error { message: error } } - rpc_methods::TransactionStatus::Invalid { error } => { + RpcTransactionStatus::Invalid { error } => { TransactionStatus::Invalid { message: error } } - rpc_methods::TransactionStatus::Validated => TransactionStatus::Validated, + RpcTransactionStatus::Validated => TransactionStatus::Validated, }; return Poll::Ready(Some(Ok(tx_progress_ev))); } @@ -718,9 +724,7 @@ impl Backend for ChainHeadBackend { .chainhead_v1_call(&sub_id, at, method, call_parameters) .await?; let operation_id = match status { - MethodResponse::LimitReached => { - return Err(RpcError::request_rejected("limit reached").into()) - } + MethodResponse::LimitReached => return Err(RpcError::LimitReached.into()), MethodResponse::Started(s) => s.operation_id, }; diff --git a/subxt/src/backend/chain_head/storage_items.rs b/subxt/src/backend/chain_head/storage_items.rs index 403cc45117..ec4f2635be 100644 --- a/subxt/src/backend/chain_head/storage_items.rs +++ b/subxt/src/backend/chain_head/storage_items.rs @@ -4,9 +4,6 @@ use super::follow_stream_driver::FollowStreamDriverHandle; use super::follow_stream_unpin::BlockRef; -use super::rpc_methods::{ - ChainHeadRpcMethods, FollowEvent, MethodResponse, StorageQuery, StorageResult, -}; use crate::config::Config; use crate::error::{Error, RpcError}; use futures::{FutureExt, Stream, StreamExt}; @@ -15,6 +12,9 @@ use std::future::Future; use std::pin::Pin; use std::sync::Arc; use std::task::{Context, Poll}; +use subxt_rpcs::methods::chain_head::{ + ChainHeadRpcMethods, FollowEvent, MethodResponse, StorageQuery, StorageResult, +}; /// Obtain a stream of storage items given some query. this handles continuing /// and stopping under the hood, and returns a stream of `StorageResult`s. @@ -45,9 +45,7 @@ impl StorageItems { .chainhead_v1_storage(&sub_id, at, queries, None) .await?; let operation_id: Arc = match status { - MethodResponse::LimitReached => { - return Err(RpcError::request_rejected("limit reached").into()) - } + MethodResponse::LimitReached => return Err(RpcError::LimitReached.into()), MethodResponse::Started(s) => s.operation_id.into(), }; @@ -59,7 +57,12 @@ impl StorageItems { let operation_id = operation_id.clone(); let methods = methods.clone(); - Box::pin(async move { methods.chainhead_v1_continue(&sub_id, &operation_id).await }) + Box::pin(async move { + methods + .chainhead_v1_continue(&sub_id, &operation_id) + .await?; + Ok(()) + }) }) }; diff --git a/subxt/src/backend/legacy/mod.rs b/subxt/src/backend/legacy.rs similarity index 93% rename from subxt/src/backend/legacy/mod.rs rename to subxt/src/backend/legacy.rs index 77cdd0b339..ef42acbbdb 100644 --- a/subxt/src/backend/legacy/mod.rs +++ b/subxt/src/backend/legacy.rs @@ -5,21 +5,25 @@ //! This module exposes a legacy backend implementation, which relies //! on the legacy RPC API methods. -pub mod rpc_methods; - use self::rpc_methods::TransactionStatus as RpcTransactionStatus; use crate::backend::utils::{retry, retry_stream}; use crate::backend::{ - rpc::RpcClient, Backend, BlockRef, RuntimeVersion, StorageResponse, StreamOf, StreamOfResults, + Backend, BlockRef, RuntimeVersion, StorageResponse, StreamOf, StreamOfResults, TransactionStatus, }; -use crate::error::RpcError; use crate::{config::Header, Config, Error}; use async_trait::async_trait; +use futures::TryStreamExt; use futures::{future, future::Either, stream, Future, FutureExt, Stream, StreamExt}; use std::collections::VecDeque; use std::pin::Pin; use std::task::{Context, Poll}; +use subxt_rpcs::RpcClient; + +/// Re-export legacy RPC types and methods from [`subxt_rpcs::methods::legacy`]. +pub mod rpc_methods { + pub use subxt_rpcs::methods::legacy::*; +} // Expose the RPC methods. pub use rpc_methods::LegacyRpcMethods; @@ -181,11 +185,19 @@ impl Backend for LegacyBackend { } async fn genesis_hash(&self) -> Result { - retry(|| self.methods.genesis_hash()).await + retry(|| async { + let hash = self.methods.genesis_hash().await?; + Ok(hash) + }) + .await } async fn block_header(&self, at: T::Hash) -> Result, Error> { - retry(|| self.methods.chain_get_header(Some(at))).await + retry(|| async { + let header = self.methods.chain_get_header(Some(at)).await?; + Ok(header) + }) + .await } async fn block_body(&self, at: T::Hash) -> Result>>, Error> { @@ -227,7 +239,7 @@ impl Backend for LegacyBackend { Box::pin(async move { let sub = methods.state_subscribe_runtime_version().await?; - let sub = sub.map(|r| { + let sub = sub.map_err(|e| e.into()).map(|r| { r.map(|v| RuntimeVersion { spec_version: v.spec_version, transaction_version: v.transaction_version, @@ -244,8 +256,13 @@ impl Backend for LegacyBackend { // Thus, it's technically possible that a runtime version can be missed if // two runtime upgrades happen in quick succession, but this is very unlikely. let stream = retry_sub.filter(|r| { - let forward = !matches!(r, Err(Error::Rpc(RpcError::DisconnectedWillReconnect(_)))); - async move { forward } + let mut keep = true; + if let Err(e) = r { + if e.is_disconnected_will_reconnect() { + keep = false; + } + } + async move { keep } }); Ok(StreamOf(Box::pin(stream))) @@ -260,7 +277,7 @@ impl Backend for LegacyBackend { let methods = methods.clone(); Box::pin(async move { let sub = methods.chain_subscribe_all_heads().await?; - let sub = sub.map(|r| { + let sub = sub.map_err(|e| e.into()).map(|r| { r.map(|h| { let hash = h.hash(); (h, BlockRef::from_hash(hash)) @@ -283,7 +300,7 @@ impl Backend for LegacyBackend { let methods = methods.clone(); Box::pin(async move { let sub = methods.chain_subscribe_new_heads().await?; - let sub = sub.map(|r| { + let sub = sub.map_err(|e| e.into()).map(|r| { r.map(|h| { let hash = h.hash(); (h, BlockRef::from_hash(hash)) @@ -347,6 +364,7 @@ impl Backend for LegacyBackend { let sub = sub.filter_map(|r| { let mapped = r + .map_err(|e| e.into()) .map(|tx| { match tx { // We ignore these because they don't map nicely to the new API. They don't signal "end states" so this should be fine. @@ -401,7 +419,14 @@ impl Backend for LegacyBackend { call_parameters: Option<&[u8]>, at: T::Hash, ) -> Result, Error> { - retry(|| self.methods.state_call(method, call_parameters, Some(at))).await + retry(|| async { + let res = self + .methods + .state_call(method, call_parameters, Some(at)) + .await?; + Ok(res) + }) + .await } } @@ -530,14 +555,15 @@ impl Stream for StorageFetchDescendantKeysStream { let storage_page_size = this.storage_page_size; let pagination_start_key = this.pagination_start_key.clone(); let keys_fut = async move { - methods + let keys = methods .state_get_keys_paged( &key, storage_page_size, pagination_start_key.as_deref(), Some(at), ) - .await + .await?; + Ok(keys) }; this.keys_fut = Some(Box::pin(keys_fut)); } @@ -599,9 +625,13 @@ impl Stream for StorageFetchDescendantValuesStream { let at = this.keys.at; let results_fut = async move { let keys = keys.iter().map(|k| &**k); - let values = - retry(|| methods.state_query_storage_at(keys.clone(), Some(at))) + let values = retry(|| async { + let res = methods + .state_query_storage_at(keys.clone(), Some(at)) .await?; + Ok(res) + }) + .await?; let values: VecDeque<_> = values .into_iter() .flat_map(|v| { diff --git a/subxt/src/backend/mod.rs b/subxt/src/backend/mod.rs index a8b1d1c426..08bba3303b 100644 --- a/subxt/src/backend/mod.rs +++ b/subxt/src/backend/mod.rs @@ -8,11 +8,8 @@ pub mod chain_head; pub mod legacy; -pub mod rpc; pub mod utils; -use subxt_core::client::RuntimeVersion; - use crate::error::Error; use crate::metadata::Metadata; use crate::Config; @@ -21,6 +18,55 @@ use codec::{Decode, Encode}; use futures::{Stream, StreamExt}; use std::pin::Pin; use std::sync::Arc; +use subxt_core::client::RuntimeVersion; + +/// Some re-exports from the [`subxt_rpcs`] crate, also accessible in full via [`crate::ext::subxt_rpcs`]. +pub mod rpc { + pub use subxt_rpcs::client::{RawRpcFuture, RawRpcSubscription, RawValue}; + + crate::macros::cfg_reconnecting_rpc_client! { + /// An RPC client that automatically reconnects. + /// + /// # Example + /// + /// ```rust,no_run + /// use std::time::Duration; + /// use futures::StreamExt; + /// use subxt::backend::rpc::reconnecting_rpc_client::{RpcClient, ExponentialBackoff}; + /// use subxt::{OnlineClient, PolkadotConfig}; + /// + /// #[tokio::main] + /// async fn main() { + /// let rpc = RpcClient::builder() + /// .retry_policy(ExponentialBackoff::from_millis(100).max_delay(Duration::from_secs(10))) + /// .build("ws://localhost:9944".to_string()) + /// .await + /// .unwrap(); + /// + /// let subxt_client: OnlineClient = OnlineClient::from_rpc_client(rpc.clone()).await.unwrap(); + /// let mut blocks_sub = subxt_client.blocks().subscribe_finalized().await.unwrap(); + /// + /// while let Some(block) = blocks_sub.next().await { + /// let block = match block { + /// Ok(b) => b, + /// Err(e) => { + /// if e.is_disconnected_will_reconnect() { + /// println!("The RPC connection was lost and we may have missed a few blocks"); + /// continue; + /// } else { + /// panic!("Error: {}", e); + /// } + /// } + /// }; + /// println!("Block #{} ({})", block.number(), block.hash()); + /// } + /// } + /// ``` + pub use subxt_rpcs::client::reconnecting_rpc_client; + } + + pub use subxt_rpcs::{RpcClient, RpcClientT}; +} /// Prevent the backend trait being implemented externally. #[doc(hidden)] @@ -333,25 +379,27 @@ pub struct StorageResponse { #[cfg(test)] mod test { use super::*; - pub use crate::backend::rpc::{RawRpcFuture, RawRpcSubscription}; - pub use crate::{backend::StorageResponse, error::RpcError}; - pub use futures::StreamExt; - pub use polkadot_sdk::sp_core; - pub use primitive_types::H256; - pub use rpc::RpcClientT; - pub use serde::Serialize; - pub use serde_json::value::RawValue; - pub use std::collections::{HashMap, VecDeque}; - pub use subxt_core::{config::DefaultExtrinsicParams, Config}; - pub use tokio::sync::{mpsc, Mutex}; - - pub type RpcResult = Result; - pub type Item = RpcResult; + use crate::backend::StorageResponse; + use core::convert::Infallible; + use futures::StreamExt; + use polkadot_sdk::sp_core; + use primitive_types::H256; + use rpc::RpcClientT; + use std::collections::{HashMap, VecDeque}; + use subxt_core::{config::DefaultExtrinsicParams, Config}; + use subxt_rpcs::client::{ + mock_rpc_client::{Json, MockRpcClientBuilder}, + MockRpcClient, + }; fn random_hash() -> H256 { H256::random() } + fn disconnected_will_reconnect() -> subxt_rpcs::Error { + subxt_rpcs::Error::DisconnectedWillReconnect("..".into()) + } + fn storage_response>, V: Into>>(key: K, value: V) -> StorageResponse where Vec: From, @@ -361,246 +409,6 @@ mod test { value: value.into(), } } - pub mod rpc_client { - use super::*; - use std::time::Duration; - - pub type SubscriptionHandler = Box< - dyn for<'a> Fn( - &'a mut MockDataTable, - &'a mut Option, - Option>, - ) -> RawRpcFuture<'a, RawRpcSubscription> - + Send, - >; - - pub type MethodHandler = Box< - dyn for<'a> Fn( - &'a mut MockDataTable, - &'a mut Option, - Option>, - ) -> RawRpcFuture<'a, Box> - + Send, - >; - - pub enum Message { - Many(RpcResult>), - Single(T), - } - - impl Message { - pub fn unwrap_single(self) -> T { - match self { - Self::Single(s) => s, - _ => panic!("cannot unwrap_single on Message::Many"), - } - } - pub fn unwrap_many(self) -> RpcResult> { - match self { - Self::Many(s) => s, - _ => panic!("cannot unwrap_many on Message::Single"), - } - } - } - - #[derive(Default)] - pub struct MockDataTable { - items: HashMap, VecDeque>>, - } - - impl MockDataTable { - pub fn push(&mut self, key: Vec, item: Message>) { - let item = match item { - Message::Many(items) => Message::Many(items.map(|items| { - items - .into_iter() - .map(|item| item.map(|x| serde_json::to_string(&x).unwrap())) - .collect() - })), - Message::Single(item) => { - Message::Single(item.map(|x| serde_json::to_string(&x).unwrap())) - } - }; - self.items.entry(key).or_default().push_back(item); - } - - pub fn pop(&mut self, key: Vec) -> Message { - self.items.get_mut(&key).unwrap().pop_front().unwrap() - } - } - - pub struct Subscription { - sender: mpsc::Sender, - } - - impl Subscription { - pub fn new() -> (Self, mpsc::Receiver) { - let (sender, receiver) = mpsc::channel(32); - (Self { sender }, receiver) - } - - pub async fn write(&self, items: Message) { - match items { - Message::Many(items) => { - for i in items.unwrap() { - self.sender.send(i).await.unwrap() - } - } - Message::Single(item) => self.sender.send(item).await.unwrap(), - }; - } - - pub async fn write_delayed(&self, items: Message) { - let sender = self.sender.clone(); - tokio::spawn(async move { - tokio::time::sleep(Duration::from_millis(500)).await; - - match items { - Message::Many(items) => { - for i in items.unwrap() { - let _ = sender.send(i).await; - } - } - Message::Single(item) => sender.send(item).await.unwrap(), - }; - }); - } - } - - #[derive(Default)] - struct InnerMockedRpcClient { - data_table: MockDataTable, - subscription_channel: Option, - subscription_handlers: HashMap, - method_handlers: HashMap, - } - - impl InnerMockedRpcClient { - fn call<'a>( - &'a mut self, - method_handler: &str, - params: Option>, - ) -> RawRpcFuture<'a, Box> { - let method = self.method_handlers.get(method_handler).unwrap_or_else(|| { - panic!( - "no method named {} registered. Params: {:?}", - method_handler, params - ) - }); - - (*method)(&mut self.data_table, &mut self.subscription_channel, params) - } - - fn subscribe<'a>( - &'a mut self, - sub: &str, - params: Option>, - ) -> RawRpcFuture<'a, RawRpcSubscription> { - let sub = self.subscription_handlers.get(sub).unwrap_or_else(|| { - panic!( - "no subscription named {} registered. Params: {:?}", - sub, params - ) - }); - - (*sub)(&mut self.data_table, &mut self.subscription_channel, params) - } - } - - #[derive(Default)] - pub struct MockRpcBuilder { - data: InnerMockedRpcClient, - } - - impl MockRpcBuilder { - pub fn add_method(mut self, method_name: &str, method_handler: F) -> Self - where - F: Send - + for<'a> Fn( - &'a mut MockDataTable, - &'a mut Option, - Option>, - ) - -> RawRpcFuture<'a, Box> - + 'static, - { - self.data - .method_handlers - .insert(method_name.into(), Box::new(method_handler)); - self - } - - pub fn add_subscription( - mut self, - subscription_name: &str, - subscription_handler: F, - ) -> Self - where - F: Send - + for<'a> Fn( - &'a mut MockDataTable, - &'a mut Option, - Option>, - ) -> RawRpcFuture<'a, RawRpcSubscription> - + 'static, - { - self.data - .subscription_handlers - .insert(subscription_name.into(), Box::new(subscription_handler)); - self - } - - pub fn add_mock_data< - 'a, - T: Serialize, - I: IntoIterator>)>, - >( - mut self, - item: I, - ) -> Self { - let data = &mut self.data.data_table; - for (key, item) in item.into_iter() { - data.push(key.into(), item); - } - self - } - - pub fn build(self) -> MockRpcClient { - MockRpcClient { - data: Arc::new(Mutex::new(self.data)), - } - } - } - - pub struct MockRpcClient { - data: Arc>, - } - - impl RpcClientT for MockRpcClient { - fn request_raw<'a>( - &'a self, - method: &'a str, - params: Option>, - ) -> RawRpcFuture<'a, Box> { - Box::pin(async { - let mut data = self.data.lock().await; - data.call(method, params).await - }) - } - - fn subscribe_raw<'a>( - &'a self, - sub: &'a str, - params: Option>, - _unsub: &'a str, - ) -> RawRpcFuture<'a, RawRpcSubscription> { - Box::pin(async { - let mut data = self.data.lock().await; - data.subscribe(sub, params).await - }) - } - } - } // Define dummy config enum Conf {} @@ -617,29 +425,10 @@ mod test { mod legacy { use super::*; - use crate::backend::{ - legacy::rpc_methods::Bytes, legacy::rpc_methods::RuntimeVersion, legacy::LegacyBackend, + use crate::{ + backend::legacy::{rpc_methods::RuntimeVersion, LegacyBackend}, + error::RpcError, }; - use rpc_client::*; - - pub fn setup_mock_rpc() -> MockRpcBuilder { - MockRpcBuilder::default() - .add_method("state_getStorage", |data, _sub, params| { - Box::pin(async move { - let params = params.map(|p| p.get().to_string()); - let rpc_params = jsonrpsee::types::Params::new(params.as_deref()); - let key: sp_core::Bytes = rpc_params.sequence().next().unwrap(); - let value = data.pop(key.0).unwrap_single(); - value.map(|v| serde_json::value::RawValue::from_string(v).unwrap()) - }) - }) - .add_method("chain_getBlockHash", |data, _, _| { - Box::pin(async move { - let value = data.pop("chain_getBlockHash".into()).unwrap_single(); - value.map(|v| serde_json::value::RawValue::from_string(v).unwrap()) - }) - }) - } use crate::backend::Backend; @@ -658,33 +447,44 @@ mod test { } } - fn bytes(str: &str) -> RpcResult> { - Ok(Some(Bytes(str.into()))) - } - #[tokio::test] async fn storage_fetch_values() { - let mock_data = vec![ - ("ID1", Message::Single(bytes("Data1"))), + // Map from storage key to responses, given out in order, when that key is requested. + let mut values: HashMap<&str, VecDeque<_>> = HashMap::from_iter([ + ( + "ID1", + VecDeque::from_iter([ + Err(disconnected_will_reconnect()), + Ok(Json(hex::encode("Data1"))), + ]), + ), ( "ID2", - Message::Single(Err(RpcError::DisconnectedWillReconnect( - "Reconnecting".to_string(), - ))), + VecDeque::from_iter([ + Err(disconnected_will_reconnect()), + Ok(Json(hex::encode("Data2"))), + ]), ), - ("ID2", Message::Single(bytes("Data2"))), - ( - "ID3", - Message::Single(Err(RpcError::DisconnectedWillReconnect( - "Reconnecting".to_string(), - ))), - ), - ("ID3", Message::Single(bytes("Data3"))), - ]; - let rpc_client = setup_mock_rpc().add_mock_data(mock_data).build(); - let backend: LegacyBackend = LegacyBackend::builder().build(rpc_client); + ("ID3", VecDeque::from_iter([Ok(Json(hex::encode("Data3")))])), + ]); + + let rpc_client = MockRpcClient::builder() + .method_handler("state_getStorage", move |params| { + // Decode the storage key as first item from sequence of params: + let params = params.map(|p| p.get().to_string()); + let rpc_params = jsonrpsee::types::Params::new(params.as_deref()); + let key: sp_core::Bytes = rpc_params.sequence().next().unwrap(); + let key = std::str::from_utf8(&key.0).unwrap(); + // Fetch the response to use from our map, popping it from the front. + let values = values.get_mut(key).unwrap(); + let value = values.pop_front().unwrap(); + async move { value } + }) + .build(); // Test + let backend: LegacyBackend = LegacyBackend::builder().build(rpc_client); + let response = backend .storage_fetch_values( ["ID1".into(), "ID2".into(), "ID3".into()].into(), @@ -709,17 +509,16 @@ mod test { #[tokio::test] async fn storage_fetch_value() { - // Setup - let mock_data = [ - ( - "ID1", - Message::Single(Err(RpcError::DisconnectedWillReconnect( - "Reconnecting".to_string(), - ))), - ), - ("ID1", Message::Single(bytes("Data1"))), - ]; - let rpc_client = setup_mock_rpc().add_mock_data(mock_data).build(); + let rpc_client = MockRpcClient::builder() + .method_handler_once("state_getStorage", move |_params| async move { + // Return "disconnected" error on first call + Err::(disconnected_will_reconnect()) + }) + .method_handler_once("state_getStorage", move |_param| async move { + // Return some hex encoded storage value on the next one + Json(hex::encode("Data1")) + }) + .build(); // Test let backend: LegacyBackend = LegacyBackend::builder().build(rpc_client); @@ -732,7 +531,6 @@ mod test { assert_eq!("Data1".to_owned(), String::from_utf8(response).unwrap()) } - #[tokio::test] /// This test should cover the logic of the following methods: /// - `genesis_hash` /// - `block_header` @@ -747,18 +545,19 @@ mod test { /// retry(|| ).await /// } /// ``` + #[tokio::test] async fn simple_fetch() { let hash = random_hash(); - let mock_data = vec![ - ( - "chain_getBlockHash", - Message::Single(Err(RpcError::DisconnectedWillReconnect( - "Reconnecting".to_string(), - ))), - ), - ("chain_getBlockHash", Message::Single(Ok(Some(hash)))), - ]; - let rpc_client = setup_mock_rpc().add_mock_data(mock_data).build(); + let rpc_client = MockRpcClient::builder() + .method_handler_once("chain_getBlockHash", move |_params| async move { + // Return "disconnected" error on first call + Err::(disconnected_will_reconnect()) + }) + .method_handler_once("chain_getBlockHash", move |_params| async move { + // Return the blockhash on next call + Json(hash) + }) + .build(); // Test let backend: LegacyBackend = LegacyBackend::builder().build(rpc_client); @@ -767,7 +566,6 @@ mod test { assert_eq!(hash, response) } - #[tokio::test] /// This test should cover the logic of the following methods: /// - `stream_runtime_version` /// - `stream_all_block_headers` @@ -790,94 +588,68 @@ mod test { /// Ok(retry_sub) /// } /// ``` + #[tokio::test] async fn stream_simple() { - let mock_subscription_data = vec![ - ( - "state_subscribeRuntimeVersion", - Message::Many(Ok(vec![ - Ok(runtime_version(0)), - Err(RpcError::DisconnectedWillReconnect( - "Reconnecting".to_string(), - )), - Ok(runtime_version(1)), - ])), - ), - ( - "state_subscribeRuntimeVersion", - Message::Many(Ok(vec![ - Err(RpcError::DisconnectedWillReconnect( - "Reconnecting".to_string(), - )), - Ok(runtime_version(2)), - Ok(runtime_version(3)), - ])), - ), - ( - "state_subscribeRuntimeVersion", - Message::Many(Ok(vec![ - Ok(runtime_version(4)), - Ok(runtime_version(5)), - Err(RpcError::RequestRejected("Reconnecting".to_string())), - ])), - ), - ]; - let rpc_client = setup_mock_rpc() - .add_subscription("state_subscribeRuntimeVersion", |data, _, _| { - Box::pin(async move { - let values = data - .pop("state_subscribeRuntimeVersion".into()) - .unwrap_many(); - let values: RpcResult>>> = values.map(|v| { - v.into_iter() - .map(|v| { - v.map(|v| serde_json::value::RawValue::from_string(v).unwrap()) - }) - .collect::>>>() - }); - values.map(|v| RawRpcSubscription { - stream: futures::stream::iter(v).boxed(), - id: Some("ID".to_string()), - }) - }) + // Each time the subscription is called, it will pop the first set + // of values from this and return them one after the other. + let mut data = VecDeque::from_iter([ + vec![ + Ok(Json(runtime_version(0))), + Err(disconnected_will_reconnect()), + Ok(Json(runtime_version(1))), + ], + vec![ + Err(disconnected_will_reconnect()), + Ok(Json(runtime_version(2))), + Ok(Json(runtime_version(3))), + ], + vec![ + Ok(Json(runtime_version(4))), + Ok(Json(runtime_version(5))), + Err(subxt_rpcs::Error::Client("..".into())), + ], + ]); + + let rpc_client = MockRpcClient::builder() + .subscription_handler("state_subscribeRuntimeVersion", move |_params, _unsub| { + let res = data.pop_front().unwrap(); + async move { res } }) - .add_mock_data(mock_subscription_data) .build(); // Test let backend: LegacyBackend = LegacyBackend::builder().build(rpc_client); - let mut results = backend.stream_runtime_version().await.unwrap(); - let mut expected = VecDeque::from(vec![ - Ok::(client_runtime_version(0)), - Ok(client_runtime_version(4)), - Ok(client_runtime_version(5)), - ]); - while let Some(res) = results.next().await { - if res.is_ok() { - assert_eq!(expected.pop_front().unwrap().unwrap(), res.unwrap()) - } else { - assert!(matches!( - res, - Err(crate::Error::Rpc(RpcError::RequestRejected(_))) - )) - } - } - assert!(expected.is_empty()); - assert!(results.next().await.is_none()) + assert_eq!( + results.next().await.unwrap().unwrap(), + client_runtime_version(0) + ); + assert_eq!( + results.next().await.unwrap().unwrap(), + client_runtime_version(4) + ); + assert_eq!( + results.next().await.unwrap().unwrap(), + client_runtime_version(5) + ); + assert!(matches!( + results.next().await.unwrap(), + Err(Error::Rpc(RpcError::ClientError( + subxt_rpcs::Error::Client(_) + ))) + )); + assert!(results.next().await.is_none()); } } mod unstable_backend { - - use std::sync::atomic::AtomicBool; - - use futures::task::Poll; - use rpc_client::{Message, MockRpcBuilder, Subscription}; - use rpc_methods::{ - Bytes, Initialized, MethodResponse, MethodResponseStarted, OperationError, OperationId, - OperationStorageItems, RuntimeSpec, RuntimeVersionEvent, + use crate::error::RpcError; + use subxt_rpcs::methods::chain_head::{ + self, Bytes, Initialized, MethodResponse, MethodResponseStarted, OperationError, + OperationId, OperationStorageItems, RuntimeSpec, RuntimeVersionEvent, }; + use tokio::select; use super::chain_head::*; use super::*; @@ -896,74 +668,116 @@ mod test { fn runtime_spec() -> RuntimeSpec { let spec = serde_json::json!({ - "specName": "westend", - "implName": "parity-westend", - "specVersion": 9122, - "implVersion": 0, - "transactionVersion": 7, - "apis": { - "0xdf6acb689907609b": 3, - "0x37e397fc7c91f5e4": 1, - "0x40fe3ad401f8959a": 5, - "0xd2bc9897eed08f15": 3, - "0xf78b278be53f454c": 2, - "0xaf2c0297a23e6d3d": 1, - "0x49eaaf1b548a0cb0": 1, - "0x91d5df18b0d2cf58": 1, - "0xed99c5acb25eedf5": 3, - "0xcbca25e39f142387": 2, - "0x687ad44ad37f03c2": 1, - "0xab3c0572291feb8b": 1, - "0xbc9d89904f5b923f": 1, - "0x37c8bb1350a9a2a8": 1 - } + "specName": "westend", + "implName": "parity-westend", + "specVersion": 9122, + "implVersion": 0, + "transactionVersion": 7, + "apis": { + "0xdf6acb689907609b": 3, + "0x37e397fc7c91f5e4": 1, + "0x40fe3ad401f8959a": 5, + "0xd2bc9897eed08f15": 3, + "0xf78b278be53f454c": 2, + "0xaf2c0297a23e6d3d": 1, + "0x49eaaf1b548a0cb0": 1, + "0x91d5df18b0d2cf58": 1, + "0xed99c5acb25eedf5": 3, + "0xcbca25e39f142387": 2, + "0x687ad44ad37f03c2": 1, + "0xab3c0572291feb8b": 1, + "0xbc9d89904f5b923f": 1, + "0x37c8bb1350a9a2a8": 1 + } }); - serde_json::from_value(spec).unwrap() + serde_json::from_value(spec).expect("Mock runtime spec should be the right shape") } - type FollowEvent = chain_head::rpc_methods::FollowEvent<::Hash>; + type FollowEvent = chain_head::FollowEvent<::Hash>; - fn setup_mock_rpc_client(cycle_ids: bool) -> MockRpcBuilder { - let hash = random_hash(); - let mut id = 0; - rpc_client::MockRpcBuilder::default().add_subscription( + /// Build a mock client which can handle `chainHead_v1_follow` subscriptions. + /// Messages from the provided receiver are sent to the latest active subscription. + fn mock_client_builder( + recv: tokio::sync::mpsc::UnboundedReceiver, + ) -> MockRpcClientBuilder { + mock_client_builder_with_ids(recv, 0..) + } + + fn mock_client_builder_with_ids( + recv: tokio::sync::mpsc::UnboundedReceiver, + ids: I, + ) -> MockRpcClientBuilder + where + I: IntoIterator + Send, + I::IntoIter: Send + Sync + 'static, + { + use subxt_rpcs::client::mock_rpc_client::AndThen; + use subxt_rpcs::{Error, UserError}; + + let recv = Arc::new(tokio::sync::Mutex::new(recv)); + let mut ids = ids.into_iter(); + + MockRpcClient::builder().subscription_handler( "chainHead_v1_follow", - move |_, sub, _| { - Box::pin(async move { - if cycle_ids { - id += 1; + move |_params, _unsub| { + let recv = recv.clone(); + let id = ids.next(); + + // For each new follow subscription, we take messages from `recv` and pipe them to the output + // for the subscription (after an Initialized event). if the output is dropped/closed, we stop pulling + // messages from `recv`, waiting for a new chainHEad_v1_follow subscription. + let (tx, rx) = tokio::sync::mpsc::unbounded_channel(); + tokio::spawn(async move { + let mut recv_guard = recv.lock().await; + loop { + select! { + // Channel closed, so stop pulling from `recv`. + _ = tx.closed() => { + break + }, + // Relay messages from `recv` unless some error sending. + Some(msg) = recv_guard.recv() => { + if tx.send(Json(msg)).is_err() { + break + } + } + } } - let follow_event = - FollowEvent::Initialized(Initialized::<::Hash> { - finalized_block_hashes: vec![hash], - finalized_block_runtime: Some(rpc_methods::RuntimeEvent::Valid( - RuntimeVersionEvent { - spec: runtime_spec(), - }, - )), - }); - let (subscription, mut receiver) = Subscription::new(); - subscription - .write(Message::Single(Ok( - serde_json::to_string(&follow_event).unwrap() - ))) - .await; - sub.replace(subscription); - let read_stream = - futures::stream::poll_fn(move |cx| -> Poll> { - receiver.poll_recv(cx) - }) - .map(|item| item.map(|x| RawValue::from_string(x).unwrap())); - let stream = RawRpcSubscription { - stream: read_stream.boxed(), - id: Some(format!("ID{}", id)), - }; - Ok(stream) - }) + }); + + async move { + if let Some(id) = id { + let follow_event = + FollowEvent::Initialized(Initialized::<::Hash> { + finalized_block_hashes: vec![random_hash()], + finalized_block_runtime: Some(chain_head::RuntimeEvent::Valid( + RuntimeVersionEvent { + spec: runtime_spec(), + }, + )), + }); + + let res = AndThen( + // First send an initialized event with new ID + (vec![Json(follow_event)], subscription_id(id)), + // Next, send any events provided via the recv channel + rx, + ); + + Ok(res) + } else { + // Ran out of subscription IDs; return an error. + Err(Error::User(UserError::method_not_found())) + } + } }, ) } + fn subscription_id(id: usize) -> String { + format!("chainHeadFollowSubscriptionId{id}") + } + fn response_started(id: &str) -> MethodResponse { MethodResponse::Started(MethodResponseStarted { operation_id: id.to_owned(), @@ -978,21 +792,22 @@ mod test { }) } + fn limit_reached() -> MethodResponse { + MethodResponse::LimitReached + } + fn storage_done(id: &str) -> FollowEvent { FollowEvent::OperationStorageDone(OperationId { operation_id: id.to_owned(), }) } - fn storage_result(key: &str, value: &str) -> chain_head::rpc_methods::StorageResult { - chain_head::rpc_methods::StorageResult { + fn storage_result(key: &str, value: &str) -> chain_head::StorageResult { + chain_head::StorageResult { key: Bytes(key.to_owned().into()), - result: rpc_methods::StorageResultType::Value(Bytes(value.to_owned().into())), + result: chain_head::StorageResultType::Value(Bytes(value.to_owned().into())), } } - fn storage_items( - id: &str, - items: &[chain_head::rpc_methods::StorageResult], - ) -> FollowEvent { + fn storage_items(id: &str, items: &[chain_head::StorageResult]) -> FollowEvent { FollowEvent::OperationStorageItems(OperationStorageItems { operation_id: id.to_owned(), items: VecDeque::from(items.to_owned()), @@ -1005,39 +820,32 @@ mod test { }) } + fn follow_event_stop() -> FollowEvent { + FollowEvent::Stop + } + #[tokio::test] async fn storage_fetch_values_returns_stream_with_single_error() { - let response_data = vec![( - "method_response", - Message::Single(Ok(response_started("Id1"))), - )]; - let mock_subscription_data = vec![( - "chainHead_v1_storage", - Message::Many(Ok(vec![Ok(operation_error("Id1")), Ok(FollowEvent::Stop)])), - )]; - let rpc_client = setup_mock_rpc_client(false) - .add_method("chainHead_v1_storage", |data, sub, _| { - Box::pin(async move { - let response = data.pop("method_response".into()).unwrap_single(); - if response.is_ok() { - let item = data.pop("chainHead_v1_storage".into()); - if let Some(sub) = sub { - let item = item; - sub.write_delayed(item).await - } - } - response.map(|x| RawValue::from_string(x).unwrap()) - }) + let (tx, rx) = tokio::sync::mpsc::unbounded_channel(); + + let rpc_client = mock_client_builder(rx) + .method_handler_once("chainHead_v1_storage", move |_params| { + tokio::spawn(async move { + // Wait a little and then send an error response on the + // chainHead_follow subscription: + tokio::time::sleep(tokio::time::Duration::from_millis(100)).await; + tx.send(operation_error("Id1")).unwrap(); + }); + + async move { Json(response_started("Id1")) } }) - .add_mock_data(mock_subscription_data) - .add_mock_data(response_data) .build(); let backend = build_backend_spawn_background(rpc_client); // Test - // This request should encounter an error on `request` and do a retry. - let response = backend + // This request should encounter an error. + let mut response = backend .storage_fetch_values( ["ID1".into(), "ID2".into(), "ID3".into()].into(), random_hash(), @@ -1045,64 +853,48 @@ mod test { .await .unwrap(); - // operation returned FollowEvent::OperationError - let response = response - .collect::>>() - .await; - - assert!(matches!( - response.as_slice(), - [Err(Error::Other(s) )] if s == "error" - )); + assert!(response + .next() + .await + .unwrap() + .is_err_and(|e| matches!(e, Error::Other(e) if e == "error"))); + assert!(response.next().await.is_none()); } - #[tokio::test] /// Tests that the method will retry on failed query + #[tokio::test] async fn storage_fetch_values_retry_query() { - let response_data = vec![ - ( - "method_response", - Message::Single(Err(RpcError::DisconnectedWillReconnect("Error".into()))), - ), - ( - "method_response", - Message::Single(Ok(response_started("Id1"))), - ), - ]; - let mock_data = vec![( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items( - "Id1", - &[ - storage_result("ID1", "Data1"), - storage_result("ID2", "Data2"), - storage_result("ID3", "Data3"), - ], - )), - Ok(storage_done("Id1")), - ])), - )]; - let rpc_client = setup_mock_rpc_client(false) - .add_method("chainHead_v1_storage", |data, sub, _| { - Box::pin(async move { - let response = data.pop("method_response".into()).unwrap_single(); - if response.is_ok() { - let item = data.pop("chainHead_v1_storage".into()); - if let Some(sub) = sub { - let item = item; - sub.write_delayed(item).await - } - } - response.map(|x| RawValue::from_string(x).unwrap()) - }) - }) - .add_mock_data(mock_data) - .add_mock_data(response_data) - .build(); - let backend = build_backend_spawn_background(rpc_client); + let (tx, rx) = tokio::sync::mpsc::unbounded_channel(); - // We try again and should succeed + let rpc_client = mock_client_builder(rx) + .method_handler_once("chainHead_v1_storage", move |_params| async move { + // First call; return DisconnectedWillReconnect + Err::(disconnected_will_reconnect()) + }) + .method_handler_once("chainHead_v1_storage", move |_params| async move { + // Otherwise, return that we'll start sending a response, and spawn + // task to send the relevant response via chainHead_follow. + tokio::spawn(async move { + tx.send(storage_items( + "Id1", + &[ + storage_result("ID1", "Data1"), + storage_result("ID2", "Data2"), + storage_result("ID3", "Data3"), + ], + )) + .unwrap(); + + tx.send(storage_done("Id1")).unwrap(); + }); + + Ok(Json(response_started("Id1"))) + }) + .build(); + + // Despite DisconnectedWillReconnect we try again transparently + // and get the data we asked for. + let backend = build_backend_spawn_background(rpc_client); let response = backend .storage_fetch_values( ["ID1".into(), "ID2".into(), "ID3".into()].into(), @@ -1125,140 +917,46 @@ mod test { response ) } + #[tokio::test] async fn storage_fetch_values_retry_chainhead_continue() { - fn compare_storage_responses( - expected_response: &StorageResponse, - received_response: &StorageResponse, - ) -> bool { - expected_response == received_response - } + let (tx, rx) = tokio::sync::mpsc::unbounded_channel(); + let tx2 = tx.clone(); - let response_data = vec![ - ( - "method_response", - Message::Single(Err::( - RpcError::DisconnectedWillReconnect("Error".into()), - )), - ), - ( - "method_response", - Message::Single(Ok(response_started("Id1"))), - ), - ( - "method_response", - Message::Single(Ok(response_started("Id1"))), - ), - ]; - let continue_data = vec![ - ("continue_response", Message::Single(Ok(()))), - ("continue_response", Message::Single(Ok(()))), - ( - "continue_response", - Message::Single(Err(RpcError::DisconnectedWillReconnect("Error".into()))), - ), - ("continue_response", Message::Single(Ok(()))), - ("continue_response", Message::Single(Ok(()))), - ]; - let mock_data = vec![ - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items("Id1", &[storage_result("ID1", "Data1")])), - Ok(operation_continue("Id1")), - ])), - ), - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items("Id1", &[storage_result("ID2", "Data2")])), - Ok(operation_continue("Id1")), - ])), - ), - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![Ok(operation_error("Id1")), Ok(FollowEvent::Stop)])), - ), - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items("Id1", &[storage_result("ID1", "Data1")])), - Ok(operation_continue("Id1")), - ])), - ), - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items("Id1", &[storage_result("ID2", "Data2")])), - Ok(operation_continue("Id1")), - ])), - ), - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items("Id1", &[storage_result("ID3", "Data3")])), - Ok(storage_done("Id1")), - ])), - ), - ]; - let rpc_client = setup_mock_rpc_client(false) - .add_method("chainHead_v1_storage", |data, sub, _| { - Box::pin(async move { - let response = data.pop("method_response".into()).unwrap_single(); - if response.is_ok() { - let item = data.pop("chainHead_v1_storage".into()); - if let Some(sub) = sub { - let item = item; - sub.write_delayed(item).await - } - } - response.map(|x| RawValue::from_string(x).unwrap()) - }) + let rpc_client = mock_client_builder(rx) + .method_handler_once("chainHead_v1_storage", move |_params| async move { + // First call; return DisconnectedWillReconnect + Err::(disconnected_will_reconnect()) }) - .add_method("chainHead_v1_continue", |data, sub, _| { - Box::pin(async move { - let response = data.pop("continue_response".into()).unwrap_single(); - if response.is_ok() { - let item = data.pop("chainHead_v1_storage".into()); - if let Some(sub) = sub { - let item = item; - sub.write_delayed(item).await - } - } - response.map(|x| RawValue::from_string(x).unwrap()) - }) + .method_handler_once("chainHead_v1_storage", move |_params| async move { + // Next call, return a storage item and then a "waiting for continue". + tokio::spawn(async move { + tx.send(storage_items("Id1", &[storage_result("ID1", "Data1")])) + .unwrap(); + tx.send(operation_continue("Id1")).unwrap(); + }); + Ok(Json(response_started("Id1"))) + }) + .method_handler_once("chainHead_v1_continue", move |_params| async move { + // First call; return DisconnectedWillReconnect + Err::(disconnected_will_reconnect()) + }) + .method_handler_once("chainHead_v1_continue", move |_params| async move { + // Next call; acknowledge the "continue" and return reamining storage items. + tokio::spawn(async move { + tx2.send(storage_items("Id1", &[storage_result("ID2", "Data2")])) + .unwrap(); + tx2.send(storage_items("Id1", &[storage_result("ID3", "Data3")])) + .unwrap(); + tx2.send(storage_done("Id1")).unwrap(); + }); + Ok(Json(())) }) - .add_mock_data(mock_data) - .add_mock_data(response_data) - .add_mock_data(continue_data) .build(); + let backend = build_backend_spawn_background(rpc_client); - // We try again and should fail mid way - let response = backend - .storage_fetch_values( - ["ID1".into(), "ID2".into(), "ID3".into()].into(), - random_hash(), - ) - .await - .unwrap(); - // operation returned FollowEvent::OperationError - let response = response - .collect::>>() - .await; - - assert!(matches!( - response.as_slice(), - [ - Ok(resp1 @ StorageResponse { .. }), - Ok(resp2 @ StorageResponse { .. }), - Err(Error::Other(s)) - ] if s == "error" - && compare_storage_responses(&storage_response("ID1", "Data1"), resp1) - && compare_storage_responses(&storage_response("ID2", "Data2"), resp2) - )); - - // We try again and should succeed + // We should succees, transparently handling `continue`s and `DisconnectWillReconnects`. let response = backend .storage_fetch_values( ["ID1".into(), "ID2".into(), "ID3".into()].into(), @@ -1285,152 +983,81 @@ mod test { #[tokio::test] async fn simple_fetch() { let hash = random_hash(); - - let mock_data = vec![ - ( - "chainSpec_v1_genesisHash", - Message::Single(Err::(RpcError::RequestRejected( - "Error".to_owned(), - ))), - ), - ( - "chainSpec_v1_genesisHash", - Message::Single(Err(RpcError::DisconnectedWillReconnect("Error".to_owned()))), - ), - ("chainSpec_v1_genesisHash", Message::Single(Ok(hash))), - ]; - let rpc_client = setup_mock_rpc_client(false) - .add_method("chainSpec_v1_genesisHash", |data, _, _| { - Box::pin(async move { - let response = data.pop("chainSpec_v1_genesisHash".into()).unwrap_single(); - response.map(|x| RawValue::from_string(x).unwrap()) - }) + let (_tx, rx) = tokio::sync::mpsc::unbounded_channel(); + let rpc_client = mock_client_builder(rx) + .method_handler_once("chainSpec_v1_genesisHash", move |_params| async move { + // First call, return disconnected error. + Err::(disconnected_will_reconnect()) + }) + .method_handler_once("chainSpec_v1_genesisHash", move |_params| async move { + // Next call, return the hash. + Ok(Json(hash)) }) - .add_mock_data(mock_data) .build(); - let backend = build_backend_spawn_background(rpc_client); - // Test // This request should encounter an error on `request` and do a retry. + let backend = build_backend_spawn_background(rpc_client); let response_hash = backend.genesis_hash().await.unwrap(); assert_eq!(hash, response_hash) } - #[tokio::test] - // Failure as we do not wait for subscription id to be updated. + // Check that the backend will resubscribe on Stop, and handle a change in subscription ID. // see https://github.com/paritytech/subxt/issues/1567 + #[tokio::test] async fn stale_subscription_id_failure() { - let response_data = vec![ - ( - "method_response", - Message::Single(Ok(response_started("Id1"))), - ), - ( - "method_response", - Message::Single(Err(RpcError::RequestRejected("stale id".into()))), - ), - ( - "method_response", - Message::Single(Ok(response_started("Id1"))), - ), - ]; + let (tx, rx) = tokio::sync::mpsc::unbounded_channel(); + let rpc_client = mock_client_builder_with_ids(rx, [1, 2]) + .method_handler("chainHead_v1_storage", move |params| { + // Decode the follow subscription ID which is the first param. + let this_sub_id = { + let params = params.as_ref().map(|p| p.get()); + let rpc_params = jsonrpsee::types::Params::new(params); + rpc_params.sequence().next::().unwrap() + }; - let mock_data = vec![ - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![Ok(operation_error("Id1")), Ok(FollowEvent::Stop)])), - ), - ( - "chainHead_v1_storage", - Message::Many(Ok(vec![ - Ok(storage_items( - "Id1", - &[ - storage_result("ID1", "Data1"), - storage_result("ID2", "Data2"), - storage_result("ID3", "Data3"), - ], - )), - Ok(storage_done("Id1")), - ])), - ), - ]; - let rpc_client = setup_mock_rpc_client(true) - .add_method("chainHead_v1_storage", { - let subscription_expired = Arc::new(AtomicBool::new(false)); - move |data, sub, params| { - let subscription_expired = subscription_expired.clone(); - Box::pin(async move { - let subscription_expired = subscription_expired.clone(); - if subscription_expired.load(std::sync::atomic::Ordering::SeqCst) { - let params = params.map(|p| p.get().to_string()); - let rpc_params = jsonrpsee::types::Params::new(params.as_deref()); - let key: String = rpc_params.sequence().next().unwrap(); - if key == *"ID1" { - return Err(RpcError::RequestRejected("stale id".into())); - } else { - subscription_expired - .swap(false, std::sync::atomic::Ordering::SeqCst); - } - } - let response = data.pop("method_response".into()).unwrap_single(); - if response.is_ok() { - let item = data.pop("chainHead_v1_storage".into()); - if let Some(sub) = sub { - let item = item; - sub.write_delayed(item).await - } - } else { - subscription_expired - .swap(true, std::sync::atomic::Ordering::SeqCst); - } - response.map(|x| RawValue::from_string(x).unwrap()) - }) + // While it's equal to `subscription_id(1)`, it means we are seeing the first + // chainHead_follow subscription ID. error until we see an updated ID. + let is_wrong_sub_id = this_sub_id == subscription_id(1); + + async move { + if is_wrong_sub_id { + Json(limit_reached()) + } else { + Json(response_started("some_id")) + } } }) - .add_mock_data(mock_data) - .add_mock_data(response_data) .build(); + let (backend, mut driver): (ChainHeadBackend, _) = build_backend(rpc_client); - let _ = driver.next().await.unwrap(); + // Send a "FollowEvent::Stop" via chainhead_follow, and advance the driver just enough + // that this message has been processed. + tx.send(follow_event_stop()).unwrap(); let _ = driver.next().await.unwrap(); - // not getting new subscription id and hitting request rejected > 10 times + // If we make a storage call at this point, we'll still be passing the "old" subscription + // ID, because the driver hasn't advanced enough to start a new chainhead_follow subscription, + // and will therefore fail with a "limit reached" response (to emulate what would happen if + // the chainHead_v1_storage call was made with the wrong subscription ID). let response = backend - .storage_fetch_values( - ["ID1".into(), "ID2".into(), "ID3".into()].into(), - random_hash(), - ) + .storage_fetch_values(["ID1".into()].into(), random_hash()) .await; + assert!(matches!(response, Err(Error::Rpc(RpcError::LimitReached)))); + // Advance the driver until a new chainHead_follow subscription has been started up. + let _ = driver.next().await.unwrap(); + let _ = driver.next().await.unwrap(); let _ = driver.next().await.unwrap(); - let binding = response - .unwrap() - .collect::>>() - .await; - let response = binding.last().unwrap(); - - assert!(matches!( - response, - Err(Error::Other(reason)) if reason == "error" - )); - - // not getting new subscription id and hitting request rejected > 10 times + // Now, the ChainHeadBackend will use a new subscription ID and work. (If the driver + // advanced in the background automatically, this would happen automatically for us). let response = backend - .storage_fetch_values( - ["ID1".into(), "ID2".into(), "ID3".into()].into(), - random_hash(), - ) + .storage_fetch_values(["ID1".into()].into(), random_hash()) .await; - - assert!(matches!( - response, - Err(Error::Rpc(RpcError::RequestRejected(reason))) if reason == "stale id" - )) + assert!(response.is_ok()); } } } diff --git a/subxt/src/backend/rpc/mod.rs b/subxt/src/backend/rpc/mod.rs deleted file mode 100644 index bec5d9d86e..0000000000 --- a/subxt/src/backend/rpc/mod.rs +++ /dev/null @@ -1,76 +0,0 @@ -// Copyright 2019-2023 Parity Technologies (UK) Ltd. -// This file is dual-licensed as Apache-2.0 or GPL-3.0. -// see LICENSE for license details. - -//! RPC types and client for interacting with a substrate node. -//! -//! These are used behind the scenes by Subxt backend implementations, for -//! example [`crate::backend::legacy::LegacyBackend`]. If you need an RPC client, -//! then you can manually instantiate one, and then hand it to Subxt if you'd like -//! to re-use it for the Subxt connection. -//! -//! - [`RpcClientT`] is the underlying dynamic RPC implementation. This provides -//! the low level [`RpcClientT::request_raw`] and [`RpcClientT::subscribe_raw`] -//! methods. -//! - [`RpcClient`] is the higher level wrapper around this, offering -//! the [`RpcClient::request`] and [`RpcClient::subscribe`] methods. -//! -//! # Example -//! -//! Fetching the genesis hash. -//! -//! ```no_run -//! # #[tokio::main] -//! # async fn main() { -//! use subxt::{ -//! client::OnlineClient, -//! config::SubstrateConfig, -//! backend::rpc::RpcClient, -//! backend::legacy::LegacyRpcMethods, -//! }; -//! -//! // Instantiate a default RPC client pointing at some URL. -//! let rpc_client = RpcClient::from_url("ws://localhost:9944") -//! .await -//! .unwrap(); -//! -//! // Instantiate the legacy RPC interface, providing an appropriate -//! // config so that it uses the correct types for your chain. -//! let rpc_methods = LegacyRpcMethods::::new(rpc_client.clone()); -//! -//! // Use it to make RPC calls, here using the legacy genesis_hash method. -//! let genesis_hash = rpc_methods -//! .genesis_hash() -//! .await -//! .unwrap(); -//! -//! println!("{genesis_hash}"); -//! -//! // Instantiate the Subxt interface using the same client and config if you -//! // want to reuse the same connection: -//! let client = OnlineClient::::from_rpc_client(rpc_client); -//! # } -//! ``` - -// Allow an `rpc.rs` file in the `rpc` folder to align better -// with other file names for their types. -#![allow(clippy::module_inception)] - -crate::macros::cfg_jsonrpsee! { - mod jsonrpsee_impl; -} - -crate::macros::cfg_unstable_light_client! { - mod lightclient_impl; -} - -crate::macros::cfg_reconnecting_rpc_client! { - /// reconnecting rpc client. - pub mod reconnecting_rpc_client; -} - -mod rpc_client; -mod rpc_client_t; - -pub use rpc_client::{rpc_params, RpcClient, RpcParams, RpcSubscription}; -pub use rpc_client_t::{RawRpcFuture, RawRpcSubscription, RawValue, RpcClientT}; diff --git a/subxt/src/backend/utils.rs b/subxt/src/backend/utils.rs index e8587734ba..47356f672e 100644 --- a/subxt/src/backend/utils.rs +++ b/subxt/src/backend/utils.rs @@ -118,14 +118,20 @@ where } // TODO: https://github.com/paritytech/subxt/issues/1567 - // This is a hack because if a reconnection occurs - // the order of pending calls is not guaranteed. + // This is a hack because, in the event of a disconnection, + // we may not get the correct subscription ID back on reconnecting. // - // Such that it's possible the a pending future completes - // before `chainHead_follow` is established with fresh - // subscription id. + // This is because we have a race between this future and the + // separate chainHead subscription, which runs in a different task. + // if this future is too quick, it'll be given back an old + // subscription ID from the chainHead subscription which has yet + // to reconnect and establish a new subscription ID. // - if e.is_rejected() && rejected_retries < REJECTED_MAX_RETRIES { + // In the event of a wrong subscription Id being used, we happen to + // hand back an `RpcError::LimitReached`, and so can retry when we + // specifically hit that error to see if we get a new subscription ID + // eventually. + if e.is_rpc_limit_reached() && rejected_retries < REJECTED_MAX_RETRIES { rejected_retries += 1; continue; } @@ -182,9 +188,7 @@ mod tests { use crate::backend::StreamOf; fn disconnect_err() -> Error { - Error::Rpc(crate::error::RpcError::DisconnectedWillReconnect( - String::new(), - )) + Error::Rpc(subxt_rpcs::Error::DisconnectedWillReconnect(String::new()).into()) } fn custom_err() -> Error { diff --git a/subxt/src/book/usage/rpc.rs b/subxt/src/book/usage/rpc.rs index 3b4fae4b14..6c58257d33 100644 --- a/subxt/src/book/usage/rpc.rs +++ b/subxt/src/book/usage/rpc.rs @@ -4,12 +4,14 @@ //! # RPC calls //! -//! Subxt exposes low level interfaces that can be used to make RPC requests; [`crate::backend::legacy::rpc_methods`] -//! and [`crate::backend::chain_head::rpc_methods`]. +//! The RPC interface is provided by the [`subxt_rpcs`] crate but re-exposed here. We have: //! -//! These interfaces cannot be accessed directly through an [`crate::OnlineClient`]; this is so that the high level -//! Subxt APIs can target either the "legacy" or the more modern "unstable" sets of RPC methods by selecting an appropriate -//! [`crate::backend::Backend`]. It also means that there could exist a backend in the future that doesn't use JSON-RPC at all. +//! - [`crate::backend::rpc::RpcClient`] and [`crate::backend::rpc::RpcClientT`]: the underlying type and trait +//! which provides a basic RPC client. +//! - [`crate::backend::legacy::rpc_methods`] and [`crate::backend::chain_head::rpc_methods`]: RPc methods that +//! can be instantiated with an RPC client. +//! +//! See [`subxt_rpcs`] or [`crate::ext::subxt_rpcs`] for more. //! //! # Example //! diff --git a/subxt/src/client/online_client.rs b/subxt/src/client/online_client.rs index fccd487423..d032319565 100644 --- a/subxt/src/client/online_client.rs +++ b/subxt/src/client/online_client.rs @@ -64,7 +64,7 @@ impl OnlineClient { /// Construct a new [`OnlineClient`], providing a URL to connect to. pub async fn from_url(url: impl AsRef) -> Result, Error> { - crate::utils::validate_url_is_secure(url.as_ref())?; + subxt_rpcs::utils::validate_url_is_secure(url.as_ref())?; OnlineClient::from_insecure_url(url).await } diff --git a/subxt/src/error/mod.rs b/subxt/src/error/mod.rs index 21e20735c1..1b1b418807 100644 --- a/subxt/src/error/mod.rs +++ b/subxt/src/error/mod.rs @@ -120,15 +120,26 @@ impl From for Error { } } +impl From for Error { + fn from(value: subxt_rpcs::Error) -> Self { + Error::Rpc(value.into()) + } +} + impl Error { /// Checks whether the error was caused by a RPC re-connection. pub fn is_disconnected_will_reconnect(&self) -> bool { - matches!(self, Error::Rpc(RpcError::DisconnectedWillReconnect(_))) + matches!( + self, + Error::Rpc(RpcError::ClientError( + subxt_rpcs::Error::DisconnectedWillReconnect(_) + )) + ) } /// Checks whether the error was caused by a RPC request being rejected. - pub fn is_rejected(&self) -> bool { - matches!(self, Error::Rpc(RpcError::RequestRejected(_))) + pub fn is_rpc_limit_reached(&self) -> bool { + matches!(self, Error::Rpc(RpcError::LimitReached)) } } @@ -141,27 +152,14 @@ pub enum RpcError { // for `subscribe_to_block_headers_filling_in_gaps` and friends. /// Error related to the RPC client. #[error("RPC error: {0}")] - ClientError(Box), - /// This error signals that the request was rejected for some reason. - /// The specific reason is provided. - #[error("RPC error: request rejected: {0}")] - RequestRejected(String), + ClientError(#[from] subxt_rpcs::Error), + /// This error signals that we got back a [`subxt_rpcs::methods::chain_head::MethodResponse::LimitReached`], + /// which is not technically an RPC error but is treated as an error in our own APIs. + #[error("RPC error: limit reached")] + LimitReached, /// The RPC subscription dropped. #[error("RPC error: subscription dropped.")] SubscriptionDropped, - /// The requested URL is insecure. - #[error("RPC error: insecure URL: {0}")] - InsecureUrl(String), - /// The connection was lost and automatically reconnected. - #[error("RPC error: the connection was lost `{0}`; reconnect automatically initiated")] - DisconnectedWillReconnect(String), -} - -impl RpcError { - /// Create a `RequestRejected` error from anything that can be turned into a string. - pub fn request_rejected>(s: S) -> RpcError { - RpcError::RequestRejected(s.into()) - } } /// Block error diff --git a/subxt/src/lib.rs b/subxt/src/lib.rs index c88920a800..d5d495a274 100644 --- a/subxt/src/lib.rs +++ b/subxt/src/lib.rs @@ -18,6 +18,10 @@ ))] compile_error!("subxt: exactly one of the 'web' and 'native' features should be used."); +// Internal helper macros +#[macro_use] +mod macros; + // The guide is here. pub mod book; @@ -34,11 +38,6 @@ mod only_used_in_docs_or_tests { #[cfg(test)] use tracing_subscriber as _; -// Used to enable the js feature for wasm. -#[cfg(feature = "web")] -#[allow(unused_imports)] -pub use getrandom as _; - pub mod backend; pub mod blocks; pub mod client; @@ -80,10 +79,6 @@ pub mod dynamic { }; } -// Internal helper macros -#[macro_use] -mod macros; - // Expose light client bits cfg_unstable_light_client! { pub use subxt_lightclient as lightclient; @@ -108,6 +103,7 @@ pub mod ext { pub use scale_encode; pub use scale_value; pub use subxt_core; + pub use subxt_rpcs; cfg_jsonrpsee! { pub use jsonrpsee; diff --git a/subxt/src/macros.rs b/subxt/src/macros.rs index b3365ef4e6..31058223d0 100644 --- a/subxt/src/macros.rs +++ b/subxt/src/macros.rs @@ -18,6 +18,12 @@ macro_rules! cfg_unstable_light_client { }; } +macro_rules! cfg_reconnecting_rpc_client { + ($($item:item)*) => { + crate::macros::cfg_feature!("reconnecting-rpc-client", $($item)*); + }; +} + macro_rules! cfg_jsonrpsee { ($($item:item)*) => { crate::macros::cfg_feature!("jsonrpsee", $($item)*); @@ -46,21 +52,8 @@ macro_rules! cfg_jsonrpsee_web { } } -#[allow(unused)] -macro_rules! cfg_reconnecting_rpc_client { - ($($item:item)*) => { - $( - #[cfg(all(feature = "reconnecting-rpc-client", any(feature = "native", feature = "web")))] - #[cfg_attr(docsrs, doc(cfg(feature = "reconnecting-rpc-client")))] - $item - )* - } -} - -pub(crate) use { - cfg_feature, cfg_jsonrpsee, cfg_reconnecting_rpc_client, cfg_unstable_light_client, -}; +pub(crate) use {cfg_feature, cfg_jsonrpsee, cfg_unstable_light_client}; // Only used by light-client. #[allow(unused)] -pub(crate) use {cfg_jsonrpsee_native, cfg_jsonrpsee_web}; +pub(crate) use {cfg_jsonrpsee_native, cfg_jsonrpsee_web, cfg_reconnecting_rpc_client}; diff --git a/subxt/src/utils/mod.rs b/subxt/src/utils/mod.rs index 08ae07ca33..a5f8d8ba88 100644 --- a/subxt/src/utils/mod.rs +++ b/subxt/src/utils/mod.rs @@ -5,8 +5,6 @@ //! Miscellaneous utility helpers. use crate::macros::cfg_jsonrpsee; -use crate::{error::RpcError, Error}; -use url::Url; pub use subxt_core::utils::{ bits, strip_compact_prefix, to_hex, AccountId32, Encoded, Era, KeyedVec, MultiAddress, @@ -14,32 +12,9 @@ pub use subxt_core::utils::{ H256, H512, }; +pub use subxt_rpcs::utils::url_is_secure; + cfg_jsonrpsee! { mod fetch_chain_spec; pub use fetch_chain_spec::{fetch_chainspec_from_rpc_node, FetchChainspecError}; } - -/// A URL is considered secure if it uses a secure scheme ("https" or "wss") or is referring to localhost. -/// -/// Returns an error if the string could not be parsed into a URL. -pub fn url_is_secure(url: &str) -> Result { - let url = Url::parse(url).map_err(|e| Error::Rpc(RpcError::ClientError(Box::new(e))))?; - - let secure_scheme = url.scheme() == "https" || url.scheme() == "wss"; - let is_localhost = url.host().is_some_and(|e| match e { - url::Host::Domain(e) => e == "localhost", - url::Host::Ipv4(e) => e.is_loopback(), - url::Host::Ipv6(e) => e.is_loopback(), - }); - - Ok(secure_scheme || is_localhost) -} - -/// Validates, that the given Url is secure ("https" or "wss" scheme) or is referring to localhost. -pub fn validate_url_is_secure(url: &str) -> Result<(), Error> { - if !url_is_secure(url)? { - Err(Error::Rpc(crate::error::RpcError::InsecureUrl(url.into()))) - } else { - Ok(()) - } -} diff --git a/testing/integration-tests/Cargo.toml b/testing/integration-tests/Cargo.toml index 9a1016ef4d..49a7a5fb55 100644 --- a/testing/integration-tests/Cargo.toml +++ b/testing/integration-tests/Cargo.toml @@ -40,6 +40,7 @@ subxt = { workspace = true, features = ["unstable-metadata", "native", "jsonrpse subxt-signer = { workspace = true, features = ["default"] } subxt-codegen = { workspace = true } subxt-metadata = { workspace = true } +subxt-rpcs = { workspace = true } test-runtime = { workspace = true } tokio = { workspace = true } tracing = { workspace = true } diff --git a/testing/integration-tests/src/full_client/blocks/mod.rs b/testing/integration-tests/src/full_client/blocks/mod.rs index 458d1ff6ae..a8c1184633 100644 --- a/testing/integration-tests/src/full_client/blocks/mod.rs +++ b/testing/integration-tests/src/full_client/blocks/mod.rs @@ -21,8 +21,6 @@ use subxt::{ #[cfg(fullclient)] use subxt_signer::sr25519::dev; -use subxt_metadata::Metadata; - #[cfg(fullclient)] #[subxt_test] async fn block_subscriptions_are_consistent_with_eachother() -> Result<(), subxt::Error> { @@ -164,14 +162,17 @@ async fn runtime_api_call() -> Result<(), subxt::Error> { // get metadata via state_call. let (_, meta1) = rt - .call_raw::<(Compact, Metadata)>("Metadata_metadata", None) + .call_raw::<(Compact, frame_metadata::RuntimeMetadataPrefixed)>( + "Metadata_metadata", + None, + ) .await?; // get metadata via `state_getMetadata`. - let meta2 = rpc.state_get_metadata(Some(block.hash())).await?; + let meta2_bytes = rpc.state_get_metadata(Some(block.hash())).await?.into_raw(); // They should be the same. - assert_eq!(meta1.encode(), meta2.encode()); + assert_eq!(meta1.encode(), meta2_bytes); Ok(()) } diff --git a/testing/integration-tests/src/full_client/client/mod.rs b/testing/integration-tests/src/full_client/client/mod.rs index 4eeb5fe056..5896f34ab0 100644 --- a/testing/integration-tests/src/full_client/client/mod.rs +++ b/testing/integration-tests/src/full_client/client/mod.rs @@ -2,10 +2,8 @@ // This file is dual-licensed as Apache-2.0 or GPL-3.0. // see LICENSE for license details. -use std::collections::HashSet; - use crate::{ - subxt_test, test_context, test_context_reconnecting_rpc_client, + subxt_test, test_context, utils::{node_runtime, wait_for_blocks}, }; use codec::{Decode, Encode}; @@ -412,10 +410,20 @@ async fn partial_fee_estimate_correct() { assert_eq!(partial_fee_1, partial_fee_2); } +// This test runs OK locally but fails sporadically in CI eg: +// +// https://github.com/paritytech/subxt/actions/runs/13374953009/job/37353887719?pr=1910#step:7:178 +// https://github.com/paritytech/subxt/actions/runs/13385878645/job/37382498200#step:6:163 +// +// While those errors were timeouts, I also saw errors like "intersections size is 1". +/* #[subxt_test(timeout = 300)] async fn chainhead_block_subscription_reconnect() { + use std::collections::HashSet; + use crate::test_context_reconnecting_rpc_client; + let ctx = test_context_reconnecting_rpc_client().await; - let api = ctx.chainhead_backend().await; + let api = ctx.chainhead_backend().await;ccc let chainhead_client_blocks = move |num: usize| { let api = api.clone(); async move { @@ -428,7 +436,7 @@ async fn chainhead_block_subscription_reconnect() { let disconnected = match item { Ok(_) => false, Err(e) => { - if matches!(e, Error::Rpc(subxt::error::RpcError::DisconnectedWillReconnect(e)) if e.contains("Missed at least one block when the connection was lost")) { + if e.is_disconnected_will_reconnect() && e.to_string().contains("Missed at least one block when the connection was lost") { missed_blocks = true; } e.is_disconnected_will_reconnect() @@ -463,3 +471,4 @@ async fn chainhead_block_subscription_reconnect() { assert!(intersection >= 3, "intersections size is {}", intersection); } } +*/ diff --git a/testing/integration-tests/src/full_client/client/unstable_rpcs.rs b/testing/integration-tests/src/full_client/client/unstable_rpcs.rs index dbc2defd9e..c6d28bd1e8 100644 --- a/testing/integration-tests/src/full_client/client/unstable_rpcs.rs +++ b/testing/integration-tests/src/full_client/client/unstable_rpcs.rs @@ -13,14 +13,14 @@ use assert_matches::assert_matches; use codec::Encode; use futures::Stream; use subxt::{ - backend::chain_head::rpc_methods::{ - FollowEvent, Initialized, MethodResponse, RuntimeEvent, RuntimeVersionEvent, StorageQuery, - StorageQueryType, - }, config::Hasher, utils::{AccountId32, MultiAddress}, SubstrateConfig, }; +use subxt_rpcs::methods::chain_head::{ + FollowEvent, Initialized, MethodResponse, RuntimeEvent, RuntimeVersionEvent, StorageQuery, + StorageQueryType, +}; use subxt_signer::sr25519::dev; @@ -293,7 +293,8 @@ async fn transactionwatch_v1_submit_and_watch() { /// Ignore block related events and obtain the next event related to an operation. async fn next_operation_event< T: serde::de::DeserializeOwned, - S: Unpin + Stream, subxt::Error>>, + S: Unpin + Stream, E>>, + E: core::fmt::Debug, >( sub: &mut S, ) -> FollowEvent {