mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-22 23:08:00 +00:00
James Wilson
b4eb406ee5
* Add and use subxt-signer crate for WASM compatible signing * cargo fmt * dev keypairs already references * WIP fix various breakages * re-jig features to be simpler and various test fixes etc * doc and web fix * fix various bits and pieces * fix a test I broke * dev-deps can't be linked to in docs, hrmph * cargo fmt * another doc link * document the subxt_signer crate more thoroughly * move feature flag for consistency * more docs, no default subxt feature flag on signer, update release instrs * Add missing license header * unwrap_inner => into_inner * extend a test a little to better check derive junctions * note more clearly that the crypto bits come from sp_core::crypto
30 lines
1.1 KiB
Rust
30 lines
1.1 KiB
Rust
use subxt::{OnlineClient, PolkadotConfig};
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use subxt_signer::sr25519::dev;
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// Generate an interface that we can use from the node's metadata.
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#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata_small.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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// Create a new API client, configured to talk to Polkadot nodes.
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let api = OnlineClient::<PolkadotConfig>::new().await?;
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// Build a storage query to access account information.
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let account = dev::alice().public_key().into();
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let storage_query = polkadot::storage().system().account(&account);
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// Use that query to `fetch` a result. This returns an `Option<_>`, which will be
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// `None` if no value exists at the given address. You can also use `fetch_default`
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// where applicable, which will return the default value if none exists.
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let result = api
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.storage()
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.at_latest()
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.await?
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.fetch(&storage_query)
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.await?;
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println!("Alice has free balance: {}", result.unwrap().data.free);
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Ok(())
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}
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