mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-24 18:18:01 +00:00
James Wilson
41 lines
1.3 KiB
Rust
41 lines
1.3 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 0.9.18-4542a603cc-aarch64-macos.
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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/v0.9.18/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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ClientBuilder,
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DefaultConfig,
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PolkadotExtrinsicParams,
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};
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#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata.scale")]
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pub mod polkadot {}
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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 = ClientBuilder::new()
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.build()
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.await?
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.to_runtime_api::<polkadot::RuntimeApi<DefaultConfig, PolkadotExtrinsicParams<DefaultConfig>>>();
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// Full metadata validation is not enabled by default; instead, the individual calls,
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// storage requests and constant accesses are runtime type checked against the node
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// metadata to ensure that they are compatible with the generated code.
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//
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// To make sure that all of our statically generated pallets are compatible with the
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// runtime node, we can run this check:
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api.validate_metadata()?;
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Ok(())
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}
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