static-analysis

Static analysis package

Using custom golangci plugin

• Documentation reference https://golangci-lint.run/contributing/new-linters/#how-to-add-a-private-linter-to-golangci-lint
• To add a custom private plugin the golangci must be build with CGO_ENABLED=1 flag
• It is required to have own build golangci binary, because this way we ensure the same used dependencies for building the our own custom plugin and the golangci. Without it we would not be able to plug-in our custom plugin
• Once we have a ready binary we can built cmd/plugin CGO_ENABLED=1 go build -buildmode=plugin -o wraperrchecker.so cmd/plugin/plugin.go
• Then we can add this custom built in plugin in the runtime using golangci config file

Wrap error checker

• Checks if we wrap our errors correctly through our codebase

    // invalid
    if err != nil {
        fmt.Errorf("something went wrong")
    }
    
    // valid
    if err != nil {
        fmt.Errorf("something went wrong: %w", err)
    }