Files
pezkuwi-subxt/subxt/examples/storage_fetch.rs
T
James Wilson 1e111ea9db Make subxt-core ready for publishing (#1508)
* Move Extrinsic decoding things to subxt_core and various tidy-ups

* A couple more fixes and fmt

* first pass moving tx logic to subxt_core

* cargo fmt

* fix wasm example

* clippy

* more clippy

* WIP Adding examples and such

* Move storage functionality more fully to subxt_core and nice examples for storage and txs

* Add example for events

* consistify how addresses/payloads are exposed in subxt-core and add runtime API fns

* Add runtime API core example

* fmt

* remove scale-info patch

* Add a little to the top level docs

* swap args around

* clippy

* cargo fmt and fix wasm-example

* doc fixes

* no-std-ise new subxt-core additions

* alloc, not core

* more no-std fixes

* A couple more fixes

* Add back extrinsic decode test
2024-04-15 15:20:11 +01:00

32 lines
1.2 KiB
Rust

#![allow(missing_docs)]
use subxt::{OnlineClient, PolkadotConfig};
use subxt_signer::sr25519::dev;
// Generate an interface that we can use from the node's metadata.
#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata_small.scale")]
pub mod polkadot {}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
// Create a new API client, configured to talk to Polkadot nodes.
let api = OnlineClient::<PolkadotConfig>::new().await?;
// Build a storage query to access account information.
let account = dev::alice().public_key().into();
let storage_query = polkadot::storage().system().account(&account);
// Use that query to `fetch` a result. This returns an `Option<_>`, which will be
// `None` if no value exists at the given address. You can also use `fetch_default`
// where applicable, which will return the default value if none exists.
let result = api
.storage()
.at_latest()
.await?
.fetch_raw(subxt_core::storage::get_address_bytes(&storage_query, &api.metadata()).unwrap())
.await?;
let v = hex::encode(result.unwrap());
println!("Alice: {v}");
Ok(())
}