Vasiliy Tolstov
89ba602e17
* fix helper fields * add metadata output for default logger Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
141 lines
2.7 KiB
Go
141 lines
2.7 KiB
Go
package logger
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import (
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"context"
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"fmt"
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"os"
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"sort"
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"sync"
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"time"
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dlog "github.com/micro/go-micro/v2/debug/log"
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)
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type defaultLogger struct {
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sync.RWMutex
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opts Options
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}
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// Init(opts...) should only overwrite provided options
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func (l *defaultLogger) Init(opts ...Option) error {
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for _, o := range opts {
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o(&l.opts)
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}
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return nil
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}
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func (l *defaultLogger) String() string {
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return "default"
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}
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func (l *defaultLogger) Fields(fields map[string]interface{}) Logger {
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l.Lock()
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l.opts.Fields = copyFields(fields)
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l.Unlock()
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return l
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}
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func copyFields(src map[string]interface{}) map[string]interface{} {
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dst := make(map[string]interface{}, len(src))
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for k, v := range src {
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dst[k] = v
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}
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return dst
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}
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func (l *defaultLogger) Log(level Level, v ...interface{}) {
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// TODO decide does we need to write message if log level not used?
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if !l.opts.Level.Enabled(level) {
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return
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}
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l.RLock()
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fields := copyFields(l.opts.Fields)
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l.RUnlock()
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fields["level"] = level.String()
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rec := dlog.Record{
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Timestamp: time.Now(),
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Message: fmt.Sprint(v...),
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Metadata: make(map[string]string, len(fields)),
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}
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keys := make([]string, 0, len(fields))
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for k, v := range fields {
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keys = append(keys, k)
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rec.Metadata[k] = fmt.Sprintf("%v", v)
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}
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sort.Strings(keys)
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metadata := ""
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for _, k := range keys {
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metadata += fmt.Sprintf(" %s=%v", k, fields[k])
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}
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dlog.DefaultLog.Write(rec)
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t := rec.Timestamp.Format("2006-01-02 15:04:05")
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fmt.Printf("%s %s %v\n", t, metadata, rec.Message)
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}
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func (l *defaultLogger) Logf(level Level, format string, v ...interface{}) {
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// TODO decide does we need to write message if log level not used?
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if level < l.opts.Level {
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return
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}
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l.RLock()
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fields := copyFields(l.opts.Fields)
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l.RUnlock()
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fields["level"] = level.String()
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rec := dlog.Record{
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Timestamp: time.Now(),
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Message: fmt.Sprintf(format, v...),
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Metadata: make(map[string]string, len(fields)),
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}
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keys := make([]string, 0, len(fields))
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for k, v := range fields {
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keys = append(keys, k)
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rec.Metadata[k] = fmt.Sprintf("%v", v)
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}
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sort.Strings(keys)
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metadata := ""
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for _, k := range keys {
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metadata += fmt.Sprintf(" %s=%v", k, fields[k])
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}
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dlog.DefaultLog.Write(rec)
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t := rec.Timestamp.Format("2006-01-02 15:04:05")
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fmt.Printf("%s %s %v\n", t, metadata, rec.Message)
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}
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func (n *defaultLogger) Options() Options {
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return n.opts
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}
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// NewLogger builds a new logger based on options
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func NewLogger(opts ...Option) Logger {
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// Default options
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options := Options{
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Level: InfoLevel,
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Fields: make(map[string]interface{}),
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Out: os.Stderr,
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Context: context.Background(),
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}
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l := &defaultLogger{opts: options}
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if err := l.Init(opts...); err != nil {
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l.Log(FatalLevel, err)
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}
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return l
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}
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