interfaces_code_snippet_24.go

// In zap/zapcore/core.go
type Core interface {
	LevelEnabler
	With([]Field) Core
	Check(Entry, *CheckedEntry) *CheckedEntry
	Write(Entry, []Field) error
	Sync() error
}

// In zap/zapcore/hook.go
type hooked struct {
	Core // Embeds the Core interface
	funcs []func(Entry) error
}

// RegisterHooks wraps a Core and runs a collection of user-defined callback
// hooks each time a message is logged. Execution of the callbacks is blocking.
//
// This offers users an easy way to register simple callbacks (e.g., metrics
// collection) without implementing the full Core interface.
func RegisterHooks(core Core, hooks ...func(Entry) error) Core {
	funcs := append([]func(Entry) error{}, hooks...)
	return &hooked{
		Core:  core,
		funcs: funcs,
	}
}

func (h *hooked) Check(ent Entry, ce *CheckedEntry) *CheckedEntry { ... }

func (h *hooked) With(fields []Field) Core { ... }

func (h *hooked) Write(ent Entry, _ []Field) error { ... }