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Add example for eip7702 #73

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12 changes: 12 additions & 0 deletions examples/eip7702/Cargo.toml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
[package]
name = "eip7702"
version = "0.1.0"
edition = "2021"

[dependencies]
hypersync-client = { path = "../../hypersync-client" }

tokio = { version = "1", features = ["full"] }
serde_json = "1"
ruint = "1"
env_logger = "0.4"
44 changes: 44 additions & 0 deletions examples/eip7702/src/main.rs
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Original file line number Diff line number Diff line change
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// Example of getting all EIP-7702 transactions

use std::sync::Arc;

use hypersync_client::{net_types::Query, Client, ClientConfig};

#[tokio::main]
async fn main() {
env_logger::init().unwrap();
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⚠️ Potential issue

Fix env_logger initialization

env_logger::init() shouldn’t be unwrapped; with env_logger 0.4 it returns (). If you upgraded env_logger (per Cargo.toml comment), init() still returns (). Use try_init() only if you want to handle the error.

-    env_logger::init().unwrap();
+    env_logger::init();
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
env_logger::init().unwrap();
env_logger::init();
🤖 Prompt for AI Agents 
In examples/eip7702/src/main.rs around line 9, the call
env_logger::init().unwrap() is incorrect because init() returns () (or if
upgraded you should use try_init() to handle errors); remove the .unwrap() and
call env_logger::init() directly, or if you need to handle initialization
failures use env_logger::try_init() and handle the Result (e.g., log or
propagate the error) instead of unwrapping.


let client = Client::new(ClientConfig {
url: Some("https://eth.hypersync.xyz".parse().unwrap()),
..Default::default()
})
.unwrap();

let query: Query = serde_json::from_value(serde_json::json!( {
// start from block 0 and go to the end of the chain (we don't specify a toBlock).
"from_block": 22490287,
"to_block": 22490297,
"transactions": [
{"authorization_list": [{/*"chain_id": [1], // chain_id filterring isn't working currently*/ "address": ["0x80296ff8d1ed46f8e3c7992664d13b833504c2bb"]}]}
],
// Select the fields we are interested in, notice topics are selected as topic0,1,2,3
"field_selection": {
"transaction": [
"hash","authorization_list"
]
},
}))
.unwrap();

let client = Arc::new(client);

println!("Fetching Data");

let res = client.get(&query).await.unwrap();

for batch in res.data.transactions {
for tx in batch {
println!("Transaction: {:?}", tx.authorization_list);
}
}
}
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