mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-13 00:01:09 +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
52 lines
1.6 KiB
Rust
52 lines
1.6 KiB
Rust
use futures::StreamExt;
|
|
use subxt::{OnlineClient, PolkadotConfig};
|
|
|
|
#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata.scale")]
|
|
pub mod polkadot {}
|
|
|
|
#[tokio::main]
|
|
async fn main() -> Result<(), Box<dyn std::error::Error>> {
|
|
// Create a client to use:
|
|
let api = OnlineClient::<PolkadotConfig>::new().await?;
|
|
|
|
// Subscribe to all finalized blocks:
|
|
let mut blocks_sub = api.blocks().subscribe_finalized().await?;
|
|
|
|
// For each block, print a bunch of information about it:
|
|
while let Some(block) = blocks_sub.next().await {
|
|
let block = block?;
|
|
|
|
let block_number = block.header().number;
|
|
let block_hash = block.hash();
|
|
|
|
println!("Block #{block_number}:");
|
|
println!(" Hash: {block_hash}");
|
|
println!(" Extrinsics:");
|
|
|
|
// Log each of the extrinsic with it's associated events:
|
|
let body = block.body().await?;
|
|
for ext in body.extrinsics() {
|
|
let idx = ext.index();
|
|
let events = ext.events().await?;
|
|
let bytes_hex = format!("0x{}", hex::encode(ext.bytes()));
|
|
|
|
println!(" Extrinsic #{idx}:");
|
|
println!(" Bytes: {bytes_hex}");
|
|
println!(" Events:");
|
|
|
|
for evt in events.iter() {
|
|
let evt = evt?;
|
|
|
|
let pallet_name = evt.pallet_name();
|
|
let event_name = evt.variant_name();
|
|
let event_values = evt.field_values()?;
|
|
|
|
println!(" {pallet_name}_{event_name}");
|
|
println!(" {}", event_values);
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|