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- package logger
- import (
- "context"
- "io"
- )
- type Option func(*Options)
- type Options struct {
- // The logging level the logger should log at. default is `InfoLevel`
- Level Level
- // fields to always be logged
- Fields map[string]interface{}
- // It's common to set this to a file, or leave it default which is `os.Stderr`
- Out io.Writer
- // Caller skip frame count for file:line info
- CallerSkipCount int
- // Alternative options
- Context context.Context
- // Name logger name
- Name string
- }
- // WithFields set default fields for the logger
- func WithFields(fields map[string]interface{}) Option {
- return func(args *Options) {
- args.Fields = fields
- }
- }
- // WithLevel set default level for the logger
- func WithLevel(level Level) Option {
- return func(args *Options) {
- args.Level = level
- }
- }
- // WithOutput set default output writer for the logger
- func WithOutput(out io.Writer) Option {
- return func(args *Options) {
- args.Out = out
- }
- }
- // WithCallerSkipCount set frame count to skip
- func WithCallerSkipCount(c int) Option {
- return func(args *Options) {
- args.CallerSkipCount = c
- }
- }
- // WithName set name for logger
- func WithName(name string) Option {
- return func(args *Options) {
- args.Name = name
- }
- }
- func SetOption(k, v interface{}) Option {
- return func(o *Options) {
- if o.Context == nil {
- o.Context = context.Background()
- }
- o.Context = context.WithValue(o.Context, k, v)
- }
- }
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