micro/logger/options.go

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package logger
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import (
"context"
"io"
"log/slog"
"os"
"time"
"go.unistack.org/micro/v3/meter"
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)
// Option func signature
type Option func(*Options)
// Options holds logger 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
}
// NewOptions creates new options struct
func NewOptions(opts ...Option) Options {
options := Options{
Level: DefaultLevel,
Fields: make([]interface{}, 0, 6),
Out: os.Stderr,
CallerSkipCount: DefaultCallerSkipCount,
Context: context.Background(),
ContextAttrFuncs: DefaultContextAttrFuncs,
AddSource: true,
TimeFunc: time.Now,
Meter: meter.DefaultMeter,
}
WithMicroKeys()(&options)
for _, o := range opts {
o(&options)
}
return options
}
// WithContextAttrFuncs appends default funcs for the context arrts filler
func WithContextAttrFuncs(fncs ...ContextAttrFunc) Option {
return func(o *Options) {
o.ContextAttrFuncs = append(o.ContextAttrFuncs, fncs...)
}
}
// WithFields set default fields for the logger
func WithFields(fields ...interface{}) Option {
return func(o *Options) {
o.Fields = fields
}
}
// WithLevel set default level for the logger
func WithLevel(level Level) Option {
return func(o *Options) {
o.Level = level
}
}
// WithOutput set default output writer for the logger
func WithOutput(out io.Writer) Option {
return func(o *Options) {
o.Out = out
}
}
// WitAddStacktrace controls writing stacktrace on error
func WithAddStacktrace(v bool) Option {
return func(o *Options) {
o.AddStacktrace = v
}
}
// WitAddSource controls writing source file and pos in log
func WithAddSource(v bool) Option {
return func(o *Options) {
o.AddSource = v
}
}
// WithCallerSkipCount set frame count to skip
func WithCallerSkipCount(c int) Option {
return func(o *Options) {
o.CallerSkipCount = c
}
}
// WithContext set context
func WithContext(ctx context.Context) Option {
return func(o *Options) {
o.Context = ctx
}
}
// WithName sets the name
func WithName(n string) Option {
return func(o *Options) {
o.Name = n
}
}
// WithTimeFunc sets the func to obtain current time
func WithTimeFunc(fn func() time.Time) Option {
return func(o *Options) {
o.TimeFunc = fn
}
}
func WithZapKeys() Option {
return func(o *Options) {
o.TimeKey = "@timestamp"
o.LevelKey = "level"
o.MessageKey = "msg"
o.SourceKey = "caller"
o.StacktraceKey = "stacktrace"
o.ErrorKey = "error"
}
}
func WithZerologKeys() Option {
return func(o *Options) {
o.TimeKey = "time"
o.LevelKey = "level"
o.MessageKey = "message"
o.SourceKey = "caller"
o.StacktraceKey = "stacktrace"
o.ErrorKey = "error"
}
}
func WithSlogKeys() Option {
return func(o *Options) {
o.TimeKey = slog.TimeKey
o.LevelKey = slog.LevelKey
o.MessageKey = slog.MessageKey
o.SourceKey = slog.SourceKey
o.StacktraceKey = "stacktrace"
o.ErrorKey = "error"
}
}
func WithMicroKeys() Option {
return func(o *Options) {
o.TimeKey = "timestamp"
o.LevelKey = "level"
o.MessageKey = "msg"
o.SourceKey = "caller"
o.StacktraceKey = "stacktrace"
o.ErrorKey = "error"
}
}
// WithAddCallerSkipCount add skip count for copy logger
func WithAddCallerSkipCount(n int) Option {
return func(o *Options) {
o.CallerSkipCount += n
}
}