mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-30 18:57:57 +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;
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use subxt::dynamic::{At, Value};
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use subxt::{OnlineClient, PolkadotConfig};
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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 dynamic storage query to access account information.
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let account = AccountKeyring::Alice.to_account_id();
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let storage_query =
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subxt::dynamic::storage("System", "Account", vec![Value::from_bytes(account)]);
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// Use that query to `fetch` a result. Because the query is dynamic, we don't know what the result
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// type will be either, and so we get a type back that can be decoded into a dynamic Value type.
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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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let value = result.unwrap().to_value()?;
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println!("Alice has free balance: {:?}", value.at("data").at("free"));
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Ok(())
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}
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