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Add an RPC method for calling a contract. (#3563)

Browse Source 
* Sketch

* Some work on docs.

* Doc improvements.

* More docs.

* Some more docs.

* Yet another comment.

* Bump impl_version.

* Accept the block hash

* Use NumberOrHex

* Update node/rpc/src/contracts.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Move rpc/primitives
This commit is contained in:
Sergei Pepyakin
2019-09-12 13:30:10 +02:00
committed by GitHub
parent 294d172187
commit 4daac15d22
18 changed files with 279 additions and 27 deletions
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substrate/core/rpc/api/src/chain/mod.rs
+1 -1
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@@ -17,12 +17,12 @@
//! Substrate blockchain API.
pub mod error;
pub mod number;
use jsonrpc_core::Result as RpcResult;
use jsonrpc_core::futures::Future;
use jsonrpc_derive::rpc;
use jsonrpc_pubsub::{typed::Subscriber, SubscriptionId};
use rpc_primitives::number;
use self::error::{FutureResult, Result};
pub use self::gen_client::Client as ChainClient;
substrate/core/rpc/api/src/chain/number.rs
-74
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@@ -1,74 +0,0 @@
// Copyright 2017-2019 Parity Technologies (UK) Ltd.
// This file is part of Substrate.
// Substrate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Substrate is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
//! Chain RPC Block number type.
use serde::{Serialize, Deserialize};
use std::{convert::TryFrom, fmt::Debug};
use primitives::U256;
/// RPC Block number type
///
/// We allow two representations of the block number as input.
/// Either we deserialize to the type that is specified in the block type
/// or we attempt to parse given hex value.
/// We do that for consistency with the returned type, default generic header
/// serializes block number as hex to avoid overflows in JavaScript.
#[derive(Serialize, Deserialize)]
#[serde(untagged)]
pub enum NumberOrHex<Number> {
/// The original header number type of block.
Number(Number),
/// Hex representation of the block number.
Hex(U256),
}
impl<Number: TryFrom<u64> + From<u32> + Debug + PartialOrd> NumberOrHex<Number> {
/// Attempts to convert into concrete block number.
///
/// Fails in case hex number is too big.
pub fn to_number(self) -> Result<Number, String> {
let num = match self {
NumberOrHex::Number(n) => n,
NumberOrHex::Hex(h) => {
let l = h.low_u64();
if U256::from(l) != h {
return Err(format!("`{}` does not fit into u64 type; unsupported for now.", h))
} else {
Number::try_from(l)
.map_err(|_| format!("`{}` does not fit into block number type.", h))?
}
},
};
// FIXME <2329>: Database seems to limit the block number to u32 for no reason
if num > Number::from(u32::max_value()) {
return Err(format!("`{:?}` > u32::max_value(), the max block number is u32.", num))
}
Ok(num)
}
}
impl From<u64> for NumberOrHex<u64> {
fn from(n: u64) -> Self {
NumberOrHex::Number(n)
}
}
impl<Number> From<U256> for NumberOrHex<Number> {
fn from(n: U256) -> Self {
NumberOrHex::Hex(n)
}
}