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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
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Bugfix locking on logs filters #506

Closed sideninja closed 4 weeks ago

sideninja commented 4 weeks ago

Prevent dead-lock on the log filters

For contributor use:

Summary by CodeRabbit

coderabbitai[bot] commented 4 weeks ago

Walkthrough

The changes introduce a new private method uninstallFilter in the PullAPI struct, which centralizes the filter uninstallation logic. The public UninstallFilter method now merely handles mutex locking and delegates to this new method. Additionally, GetFilterLogs and GetFilterChanges have been updated to utilize uninstallFilter for expired filters, enhancing code organization while preserving existing functionality.

Changes

File Change Summary
api/pull.go Introduced uninstallFilter method to encapsulate filter uninstallation logic; modified UninstallFilter to call uninstallFilter. Updated GetFilterLogs and GetFilterChanges to use uninstallFilter for expired filters.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant PullAPI
    participant Mutex

    Client->>PullAPI: Call UninstallFilter(id)
    PullAPI->>Mutex: Lock
    PullAPI->>PullAPI: Call uninstallFilter(id)
    PullAPI-->>Mutex: Unlock
    PullAPI->>Client: Return result

🐰 "In the code where filters play,
A new method leads the way.
With locks in place, it hops with glee,
Organizing logic, oh so free!
Expired filters, no more dread,
The rabbit dances, code well-fed!" 🐇✨

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