log

type Config struct {
	// Level is the minimum enabled logging level. Note that this is a dynamic
	// level, so calling Config.Level.SetLevel will atomically change the logger
	// level of all loggers descended from this config.
	Level zap.AtomicLevel `json:"level,omitempty" yaml:"level,omitempty"`
	// Development puts the logger in development mode, which changes the
	// behavior of DPanicLevel and takes stacktraces more liberally.
	Development bool `json:"development,omitempty" yaml:"development,omitempty"`
	// DisableCaller stops annotating logs with the calling function's file
	// name and line number. By default, all logs are annotated.
	DisableCaller bool `json:"disableCaller,omitempty" yaml:"disableCaller,omitempty"`
	// DisableStacktrace completely disables automatic stacktrace capturing. By
	// default, stacktraces are captured for WarnLevel and above logs in
	// development and ErrorLevel and above in production.
	DisableStacktrace bool `json:"disableStacktrace,omitempty" yaml:"disableStacktrace,omitempty"`
	// Sampling sets a sampling policy. A nil SamplingConfig disables sampling.
	Sampling *zap.SamplingConfig `json:"sampling,omitempty" yaml:"sampling,omitempty"`
	// OutputPaths is a list of URLs or file paths to write logging output to.
	// See Open for details.
	OutputPaths map[zapcore.Level]string `json:"outputPaths,omitempty" yaml:"outputPaths,omitempty"`
	// ErrorOutputPaths is a list of URLs to write internal logger errors to.
	// The default is standard error.
	//
	// Note that this setting only affects internal errors; for sample code that
	// sends error-level logs to a different location from info- and debug-level
	// logs, see the package-level AdvancedConfiguration example.
	ErrorOutputPaths []string `json:"errorOutputPaths,omitempty" yaml:"errorOutputPaths,omitempty"`
	// InitialFields is a collection of fields to add to the root logger.
	InitialFields map[string]interface{} `json:"initialFields,omitempty" yaml:"initialFields,omitempty"`
}