logger

type ContextAttrFunc func(ctx context.Context) []interface{}

type Field interface{}

type Level int8

type Logger interface {
	// Init initialises options
	Init(opts ...Option) error
	// Clone create logger copy with new options
	Clone(opts ...Option) Logger
	// V compare provided verbosity level with current log level
	V(level Level) bool
	// Level sets the log level for logger
	Level(level Level)
	// The Logger options
	Options() Options
	// Fields set fields to always be logged with keyval pairs
	Fields(fields ...interface{}) Logger
	// Info level message
	Info(ctx context.Context, args ...interface{})
	// Trace level message
	Trace(ctx context.Context, args ...interface{})
	// Debug level message
	Debug(ctx context.Context, args ...interface{})
	// Warn level message
	Warn(ctx context.Context, args ...interface{})
	// Error level message
	Error(ctx context.Context, args ...interface{})
	// Fatal level message
	Fatal(ctx context.Context, args ...interface{})
	// Infof level message
	Infof(ctx context.Context, msg string, args ...interface{})
	// Tracef level message
	Tracef(ctx context.Context, msg string, args ...interface{})
	// Debug level message
	Debugf(ctx context.Context, msg string, args ...interface{})
	// Warn level message
	Warnf(ctx context.Context, msg string, args ...interface{})
	// Error level message
	Errorf(ctx context.Context, msg string, args ...interface{})
	// Fatal level message
	Fatalf(ctx context.Context, msg string, args ...interface{})
	// Log logs message with needed level
	Log(ctx context.Context, level Level, args ...interface{})
	// Logf logs message with needed level
	Logf(ctx context.Context, level Level, msg string, args ...interface{})
	// Name returns broker instance name
	Name() string
	// String returns the type of logger
	String() string
}

type Option func(*Options)

type Options struct {
	// Out holds the output writer
	Out io.Writer
	// Context holds exernal options
	Context context.Context
	// Name holds the logger name
	Name string
	// Fields holds additional metadata
	Fields []interface{}
	// CallerSkipCount number of frmaes to skip
	CallerSkipCount int
	// ContextAttrFuncs contains funcs that executed before log func on context
	ContextAttrFuncs []ContextAttrFunc
	// TimeKey is the key used for the time of the log call
	TimeKey string
	// LevelKey is the key used for the level of the log call
	LevelKey string
	// ErroreKey is the key used for the error of the log call
	ErrorKey string
	// MessageKey is the key used for the message of the log call
	MessageKey string
	// SourceKey is the key used for the source file and line of the log call
	SourceKey string
	// StacktraceKey is the key used for the stacktrace
	StacktraceKey string
	// AddStacktrace controls writing of stacktaces on error
	AddStacktrace bool
	// AddSource enabled writing source file and position in log
	AddSource bool
	// The logging level the logger should log
	Level Level
	// TimeFunc used to obtain current time
	TimeFunc func() time.Time
	// Meter used to count logs for specific level
	Meter meter.Meter
}