mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-13 05:51:02 +00:00
pezkuwichain
99e4ee3ab8
- Renamed all subxt crates to pezkuwi-subxt - Updated internal references - Configured for Pezkuwi ecosystem
33 lines
1.1 KiB
Rust
33 lines
1.1 KiB
Rust
#![allow(missing_docs)]
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use pezkuwi_subxt::{
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OfflineClient, config::PolkadotConfig, ext::codec::Decode, metadata::Metadata, utils::H256,
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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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// We need to obtain the following details for an OfflineClient to be instantiated:
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// 1. Genesis hash (RPC call: chain_getBlockHash(0)):
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let genesis_hash = {
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let h = "91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3";
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let bytes = hex::decode(h).unwrap();
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H256::from_slice(&bytes)
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};
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// 2. A runtime version (system_version constant on a Substrate node has these):
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let runtime_version =
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pezkuwi_subxt::client::RuntimeVersion { spec_version: 9370, transaction_version: 20 };
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// 3. Metadata (I'll load it from the downloaded metadata, but you can use `subxt metadata >
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// file.scale` to download it):
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let metadata = {
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let bytes = std::fs::read("./artifacts/polkadot_metadata_small.scale").unwrap();
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Metadata::decode(&mut &*bytes).unwrap()
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};
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// Create an offline client using the details obtained above:
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let _api = OfflineClient::<PolkadotConfig>::new(genesis_hash, runtime_version, metadata);
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Ok(())
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}
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