mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-12 11:11:17 +00:00
James Wilson
33a9ec91af
* First pass adding functions to get blocks and extrinsics * cargo fmt and cache block events * prefix block hash with 0x * pin streams for better ergonomics and add an example of subscribing to blocks * remove unused var * standardise on _all, _best and _finalized for different block header subs * WIP center subscribing around blocks * Remove the event filtering/subscribing stuff * clippy * we need tokio, silly clippy * add extrinsic_index() call * Update subxt/src/blocks/block_types.rs Co-authored-by: Andrew Jones <ascjones@gmail.com> Co-authored-by: Andrew Jones <ascjones@gmail.com>
67 lines
2.3 KiB
Rust
67 lines
2.3 KiB
Rust
// Copyright 2019-2022 Parity Technologies (UK) Ltd.
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// This file is dual-licensed as Apache-2.0 or GPL-3.0.
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// see LICENSE for license details.
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//! This example should compile but should fail to work, since we've modified the
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//! config to not align with a Polkadot node.
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use sp_keyring::AccountKeyring;
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use subxt::{
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config::{
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Config,
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SubstrateConfig,
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},
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tx::{
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PairSigner,
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SubstrateExtrinsicParams,
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},
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OnlineClient,
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};
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#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata.scale")]
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pub mod polkadot {}
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/// Custom [`Config`] impl where the default types for the target chain differ from the
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/// [`DefaultConfig`]
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#[derive(Clone, Debug, Default, Eq, PartialEq)]
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pub struct MyConfig;
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impl Config for MyConfig {
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// This is different from the default `u32`.
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//
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// *Note* that in this example it does differ from the actual `Index` type in the
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// polkadot runtime used, so some operations will fail. Normally when using a custom `Config`
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// impl types MUST match exactly those used in the actual runtime.
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type Index = u64;
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type BlockNumber = <SubstrateConfig as Config>::BlockNumber;
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type Hash = <SubstrateConfig as Config>::Hash;
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type Hashing = <SubstrateConfig as Config>::Hashing;
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type AccountId = <SubstrateConfig as Config>::AccountId;
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type Address = <SubstrateConfig as Config>::Address;
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type Header = <SubstrateConfig as Config>::Header;
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type Signature = <SubstrateConfig as Config>::Signature;
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// ExtrinsicParams makes use of the index type, so we need to adjust it
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// too to align with our modified index type, above:
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type ExtrinsicParams = SubstrateExtrinsicParams<Self>;
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}
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#[tokio::main]
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async fn main() -> Result<(), Box<dyn std::error::Error>> {
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let signer = PairSigner::new(AccountKeyring::Alice.pair());
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let dest = AccountKeyring::Bob.to_account_id().into();
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// Create a client to use:
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let api = OnlineClient::<MyConfig>::new().await?;
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// Create a transaction to submit:
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let tx = polkadot::tx()
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.balances()
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.transfer(dest, 123_456_789_012_345);
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// submit the transaction with default params:
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let hash = api.tx().sign_and_submit_default(&tx, &signer).await?;
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println!("Balance transfer extrinsic submitted: {}", hash);
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Ok(())
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}
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