ethers-rs/examples/queries/examples/paginated_logs.rs

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refactor: examples (#1940) * ToC * Big numbers section * Middleware examples: builder * Middleware examples: gas_escalator * Middleware examples: gas_oracle * Middleware examples: signer * Middleware examples: missing stubs * review: applied DaniPopes suggestions to big numbers * typo * Middleware examples: nonce_manager * cargo +nightly fmt * update roadmap * Middleware examples: policy * Middleware examples: added docs * Contracts examples: created folder; included abigen example * Contracts examples: refactor abigen docs. Fixed cargo example reference * Contracts examples: contract_events; minor docs changes * Moved each example under its own crate. Cargo builds locally TODO: Fix broken examples CI * Big numbers examples: used regular operators for math * Single examples run correctly (missing overall CI execution) Example crates dependencies Removed duplicates * review: Applied gakonst note to remove commented items in workspace manifest * review: Applied gakonst note to restore visibility on contract constructor * ci: - Run/Build examples in a single step to avoid duplicated scripts - Removed ci.yaml step "Build all examples" * cargo +nightly fmt * ci: fix WASM step error * Removed deprecated EthGasStation example * WASM example uses local copy of `contract_abi.json`. In this way we keep the WASM example auto-consistent, at the cost of a small duplication * Cargo.lock aligned to master branch * Removed useless comments in examples * review: Applied gakonst note to add panic!() on the policy middleware example * review: Applied gakonst suggestion to add a custom middleware example * typos in docs * Update examples/big-numbers/examples/bn_math_operations.rs review: Accepted commit suggested by DaniPopes Co-authored-by: DaniPopes <57450786+DaniPopes@users.noreply.github.com> * review: Applied DaniPopes suggestion on assert_eq! * Update examples/big-numbers/README.md review: Accepted DaniPopes suggestion on big-numbers docs Co-authored-by: DaniPopes <57450786+DaniPopes@users.noreply.github.com> * review: All imports now reference the "ethers" crate * ci: added features ["ws", "rustls"] where needed cargo +nigthly fmt * Examples with special features (e.g. ipc, trezor etc.) are built alongside them. This is expressed as a "default" requirement in their respective Cargo.toml * cargo +nightly fmt * Examples: Gas oracle API keys from env Added missing features in middleware Cargo.toml * typo: use expect() instead of unwrap() * Updated ToC Moved 2 examples under more relevant folders * Gas oracle examples raise panic on middleware errors * review: removed useless [[example]] in Cargo.toml * review: removed #[allow(unused_must_use)] from gas_escalator example * review: Removed prefixes from file names * review: removed useless [[example]] in Cargo.toml * docs: Updated description to run examples in the workspace README.md Co-authored-by: Andrea Simeoni <> Co-authored-by: DaniPopes <57450786+DaniPopes@users.noreply.github.com>
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use ethers::{
core::{
abi::AbiDecode,
types::{BlockNumber, Filter, U256},
},
providers::{Middleware, Provider, StreamExt, Ws},
};
use eyre::Result;
use std::sync::Arc;
#[tokio::main]
async fn main() -> Result<()> {
let client: Provider<Ws> =
Provider::<Ws>::connect("wss://mainnet.infura.io/ws/v3/c60b0bb42f8a4c6481ecd229eddaca27")
.await?;
let client = Arc::new(client);
let last_block = client.get_block(BlockNumber::Latest).await?.unwrap().number.unwrap();
println!("last_block: {last_block}");
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let erc20_transfer_filter =
Filter::new().from_block(last_block - 10000).event("Transfer(address,address,uint256)");
refactor: examples (#1940) * ToC * Big numbers section * Middleware examples: builder * Middleware examples: gas_escalator * Middleware examples: gas_oracle * Middleware examples: signer * Middleware examples: missing stubs * review: applied DaniPopes suggestions to big numbers * typo * Middleware examples: nonce_manager * cargo +nightly fmt * update roadmap * Middleware examples: policy * Middleware examples: added docs * Contracts examples: created folder; included abigen example * Contracts examples: refactor abigen docs. Fixed cargo example reference * Contracts examples: contract_events; minor docs changes * Moved each example under its own crate. Cargo builds locally TODO: Fix broken examples CI * Big numbers examples: used regular operators for math * Single examples run correctly (missing overall CI execution) Example crates dependencies Removed duplicates * review: Applied gakonst note to remove commented items in workspace manifest * review: Applied gakonst note to restore visibility on contract constructor * ci: - Run/Build examples in a single step to avoid duplicated scripts - Removed ci.yaml step "Build all examples" * cargo +nightly fmt * ci: fix WASM step error * Removed deprecated EthGasStation example * WASM example uses local copy of `contract_abi.json`. In this way we keep the WASM example auto-consistent, at the cost of a small duplication * Cargo.lock aligned to master branch * Removed useless comments in examples * review: Applied gakonst note to add panic!() on the policy middleware example * review: Applied gakonst suggestion to add a custom middleware example * typos in docs * Update examples/big-numbers/examples/bn_math_operations.rs review: Accepted commit suggested by DaniPopes Co-authored-by: DaniPopes <57450786+DaniPopes@users.noreply.github.com> * review: Applied DaniPopes suggestion on assert_eq! * Update examples/big-numbers/README.md review: Accepted DaniPopes suggestion on big-numbers docs Co-authored-by: DaniPopes <57450786+DaniPopes@users.noreply.github.com> * review: All imports now reference the "ethers" crate * ci: added features ["ws", "rustls"] where needed cargo +nigthly fmt * Examples with special features (e.g. ipc, trezor etc.) are built alongside them. This is expressed as a "default" requirement in their respective Cargo.toml * cargo +nightly fmt * Examples: Gas oracle API keys from env Added missing features in middleware Cargo.toml * typo: use expect() instead of unwrap() * Updated ToC Moved 2 examples under more relevant folders * Gas oracle examples raise panic on middleware errors * review: removed useless [[example]] in Cargo.toml * review: removed #[allow(unused_must_use)] from gas_escalator example * review: Removed prefixes from file names * review: removed useless [[example]] in Cargo.toml * docs: Updated description to run examples in the workspace README.md Co-authored-by: Andrea Simeoni <> Co-authored-by: DaniPopes <57450786+DaniPopes@users.noreply.github.com>
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let mut stream = client.get_logs_paginated(&erc20_transfer_filter, 10).take(5);
while let Some(res) = stream.next().await {
let log = res?;
println!(
"block: {:?}, tx: {:?}, token: {:?}, from: {:?}, to: {:?}, amount: {:?}",
log.block_number,
log.transaction_hash,
log.address,
log.topics.get(1),
log.topics.get(2),
U256::decode(log.data)
);
}
Ok(())
}