mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-09 04:47:59 +00:00
James Wilson
b316301d61
* 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
42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
// Copyright 2019-2022 Parity Technologies (UK) Ltd.
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// This file is dual-licensed as Apache-2.0 or GPL-3.0.
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// see LICENSE for license details.
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//! To run this example, a local polkadot node should be running. Example verified against polkadot v0.9.28-9ffe6e9e3da.
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//!
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//! E.g.
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//! ```bash
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//! curl "https://github.com/paritytech/polkadot/releases/download/v0.9.28/polkadot" --output /usr/local/bin/polkadot --location
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//! polkadot --dev --tmp
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//! ```
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use subxt::{
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config::Header,
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OnlineClient,
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PolkadotConfig,
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};
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#[tokio::main]
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async fn main() -> Result<(), Box<dyn std::error::Error>> {
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tracing_subscriber::fmt::init();
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let api =
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OnlineClient::<PolkadotConfig>::from_url("wss://rpc.polkadot.io:443").await?;
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// For non-finalised blocks use `.subscribe_blocks()`
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let mut blocks = api.rpc().subscribe_finalized_block_headers().await?;
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while let Some(Ok(block)) = blocks.next().await {
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println!(
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"block number: {} hash:{} parent:{} state root:{} extrinsics root:{}",
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block.number,
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block.hash(),
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block.parent_hash,
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block.state_root,
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block.extrinsics_root
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);
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}
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Ok(())
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}
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