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 10 forks source link

Add server_panics_total metric #410

Closed illia-malachyn closed 3 months ago

illia-malachyn commented 3 months ago

Covers #384

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Commits Files that changed from the base of the PR and between d324978eb0d44a3f61768c874dea7d8ae092f808 and 7aaac2cb2500bebc8bb535ca3655be1ad91c9f7b.

Walkthrough

The recent changes significantly enhance the error recovery and monitoring capabilities of the HTTP server. By integrating a metrics collector into the recoverHandler, the server can now effectively report panics, leading to improved observability. Additionally, updates to the metrics collector interface allow for tracking server panics, which reinforces the monitoring framework. These enhancements will contribute to more robust diagnostics and improved stability monitoring of the application.

Changes

Files Change Summary
api/server.go Updated recoverHandler to accept a metrics collector; modified ServeHTTP to pass the collector.
metrics/collector.go Added ServerPanicked() method to Collector interface; introduced serverPanicsCounters in DefaultCollector.
metrics/noop_collector.go Added ServerPanicked() method to NoopCollector with no implementation, enhancing future error reporting.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant HTTPServer
    participant MetricsCollector

    Client->>HTTPServer: Request
    HTTPServer->>HTTPServer: Handle Request
    alt No Panic
        HTTPServer->>Client: Response
    else Panic Occurs
        HTTPServer->>MetricsCollector: ServerPanicked()
        HTTPServer->>Client: Panic Response
    end

🐰 In the meadow, changes bloom bright,
Metrics now dance in the server's light.
When panic strikes, we won't despair,
With collectors tall, we monitor care.
Hops of progress, joy in sight! 🌼


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sideninja commented 3 months ago

@illia-malachyn does this PR require any other PRs (beside the one already merged)

illia-malachyn commented 3 months ago

@illia-malachyn does this PR require any other PRs (beside the one already merged)

No, nothing else is needed