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onflow / flow-evm-gateway

FlowEVM Gateway implements an Ethereum-equivalent JSON-RPC API for EVM clients to use
https://developers.flow.com/evm/about
Apache License 2.0
11 stars 9 forks source link

Fix error logging #438

Closed m-Peter closed 1 month ago

m-Peter commented 1 month ago

Description

The way we previously set-up the geth log, for catching method handler crashes, resulted in logs with warn logging level as well, as can be seen below:

3:44PM ERR RPC method eth_feeHistory crashed: runtime error: index out of range [0] with length 0
goroutine 148 [running]:
github.com/onflow/go-ethereum/rpc.(*callback).call.func1()
...
 component=API
3:44PM WRN Served eth_feeHistory component=API conn=[::1]:58018 duration=0.34816 err="method handler crashed" reqid=9
3:44PM DBG API response component=API method= params=null result=null

It's the lines that have WRN level, and the reqid field.

We also avoid logging debug lines for API responses which have errored out, hence they do not have a result anyway:

3:44PM DBG API response component=API method= params=null result=null

For contributor use:

Summary by CodeRabbit

coderabbitai[bot] commented 1 month ago

[!CAUTION]

Review failed

The pull request is closed.

Walkthrough

The recent updates enhance the NewHTTPServer function and the Write method of the responseHandler struct in api/server.go. These modifications improve parameter formatting for readability and refine logging behavior. The logging now captures only successful responses, reducing unnecessary clutter in logs. Overall, these changes aim to improve code clarity and streamline logging practices for better monitoring of API interactions.

Changes

Files Change Summary
api/server.go Reformatted parameters in NewHTTPServer for readability; added Level to slogzerolog.Option; refined Write method to log only successful responses.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant HTTPServer
    participant ResponseHandler

    Client->>HTTPServer: Send API Request
    HTTPServer->>ResponseHandler: Handle Request
    ResponseHandler->>HTTPServer: Create Response
    alt Success
        ResponseHandler->>HTTPServer: Log Successful Response
    end
    HTTPServer-->>Client: Return Response

🐇 In the code, I hop with glee,
Logging success, as it should be!
No more clutter, just the best,
Clear and bright, a bunny's quest!
With each change, we leap and bound,
A joyful code, where peace is found! 🐾

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