Files
pezkuwi-subxt/examples/examples/concurrent_storage_requests.rs
T
James Wilson b316301d61 Make sp_core and sp_runtime dependencies optional, and bump to latest (#760)
* begin porting over traits; remove Config use of Hash

* port over the Header bits that we need

* sp_core_hashing where possible, move Verify to PairSigner, remove unused errors

* tidy up Config things and move related bits into one place

* fix codegen

* copy Era over

* move AccountId, Address, Signer to Signer trait and a pass over fixing examples

* impl MultiAddress, MultiSignature, AccountId32 and add back to Config (for decoding later)

* Copy over StorageKey, StorageData, StorageChangeSet

* subxt core compiling with no sp_core or sp_runtime

* Get examples compiling

* pass over fixing tests

* cargo fmt

* clippy tweaks and update polkadot.rs

* fix codegen docs

* port over special DigestItem encoding/decoding

* clippy and doc fixes

* cargo fmt and example fix

* more cargo fmt-ing...

* substrate-extra to substrate-compat

* cargo.toml comments

* simplify PairSigner trait bounds

* move RPC types to a separate file

* fix docs

* Add some tests for things and other PR feedback

* bump to latest sp deps

* avoid needing substrate-compat feature in a test
2023-01-10 12:02:41 +00:00

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1.3 KiB
Rust

// Copyright 2019-2022 Parity Technologies (UK) Ltd.
// This file is dual-licensed as Apache-2.0 or GPL-3.0.
// see LICENSE for license details.
//! To run this example, a local polkadot node should be running. Example verified against polkadot v0.9.28-9ffe6e9e3da.
//!
//! E.g.
//! ```bash
//! curl "https://github.com/paritytech/polkadot/releases/download/v0.9.28/polkadot" --output /usr/local/bin/polkadot --location
//! polkadot --dev --tmp
//! ```
use futures::join;
use sp_keyring::AccountKeyring;
use subxt::{
OnlineClient,
PolkadotConfig,
};
#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata.scale")]
pub mod polkadot {}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let api = OnlineClient::<PolkadotConfig>::new().await?;
let addr = AccountKeyring::Bob.to_account_id().into();
// Construct storage addresses to access:
let staking_bonded = polkadot::storage().staking().bonded(&addr);
let staking_ledger = polkadot::storage().staking().ledger(&addr);
// For storage requests, we can join futures together to
// await multiple futures concurrently:
let a_fut = api.storage().fetch(&staking_bonded, None);
let b_fut = api.storage().fetch(&staking_ledger, None);
let (a, b) = join!(a_fut, b_fut);
println!("{a:?}, {b:?}");
Ok(())
}