mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-29 23:07:57 +00:00
James Wilson
562f12cd9b
* WIP Starting to write book; extrinsics first pass done * cargo fmt * Ongoing work; events, constants, wip blocks * at_latest() and wip blocks * remove need to import parity-scale-codec crate with Subxt for macro to work * More docs; expanding on setup guide and finish pass of main sections * Tidy and remove example section for now * format book lines to 100chars * Fix example code * cargo fmt * cargo fmt * fix example * Fix typos * fix broken doc links, pub mods * Update Subxt macro docs * can't link to Subxt here * move macro docs to Subxt to make linking better and fix example code * note on macro about docs * cargo fmt * document the no_default_derives macro feature * Address feedback and remove redundant text * address review comments; minor tweaks * WIP add Runtime calls to book * Improve Runtime API docs * expose thing we forgot to expose and doc link fixes
28 lines
1016 B
Rust
28 lines
1016 B
Rust
use sp_keyring::AccountKeyring;
|
|
use subxt::dynamic::{At, Value};
|
|
use subxt::{OnlineClient, PolkadotConfig};
|
|
|
|
#[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 dynamic storage query to access account information.
|
|
let account = AccountKeyring::Alice.to_account_id();
|
|
let storage_query =
|
|
subxt::dynamic::storage("System", "Account", vec![Value::from_bytes(account)]);
|
|
|
|
// Use that query to `fetch` a result. Because the query is dynamic, we don't know what the result
|
|
// type will be either, and so we get a type back that can be decoded into a dynamic Value type.
|
|
let result = api
|
|
.storage()
|
|
.at_latest()
|
|
.await?
|
|
.fetch(&storage_query)
|
|
.await?;
|
|
let value = result.unwrap().to_value()?;
|
|
|
|
println!("Alice has free balance: {:?}", value.at("data").at("free"));
|
|
Ok(())
|
|
}
|