Add logrus example (#1124)
* add logrus logger example Co-authored-by: Lining Guan <lining.guan@grabtaxi.com>pull/1128/head
Kuiba
4 years ago
committed by
GitHub
parent
545ffd1084
commit
09be032575
@ -0,0 +1,100 @@ |
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package log |
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import ( |
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"io" |
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"os" |
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"github.com/go-kratos/kratos/v2/log" |
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"github.com/sirupsen/logrus" |
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) |
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var _ log.Logger = (*LogrusLogger)(nil) |
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type LogrusLogger struct { |
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log *logrus.Logger |
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} |
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func NewLogrusLogger(options ...Option) log.Logger { |
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logger := logrus.New() |
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logger.Level = logrus.DebugLevel |
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logger.Out = os.Stdout |
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logger.Formatter = &logrus.JSONFormatter{} |
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for _, option := range options { |
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option(logger) |
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} |
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return &LogrusLogger{ |
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log: logger, |
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} |
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} |
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func (l *LogrusLogger) Log(level log.Level, keyvals ...interface{}) (err error) { |
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var ( |
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logrusLevel logrus.Level |
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fields logrus.Fields = make(map[string]interface{}) |
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msg string |
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) |
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switch level { |
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case log.LevelDebug: |
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logrusLevel = logrus.DebugLevel |
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case log.LevelInfo: |
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logrusLevel = logrus.InfoLevel |
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case log.LevelWarn: |
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logrusLevel = logrus.WarnLevel |
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case log.LevelError: |
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logrusLevel = logrus.ErrorLevel |
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default: |
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logrusLevel = logrus.DebugLevel |
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} |
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if logrusLevel > l.log.Level { |
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return |
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} |
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if len(keyvals) == 0 { |
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return nil |
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} |
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if len(keyvals)%2 != 0 { |
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keyvals = append(keyvals, "") |
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} |
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for i := 0; i < len(keyvals); i += 2 { |
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key, ok := keyvals[i].(string) |
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if !ok { |
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continue |
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} |
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if key == logrus.FieldKeyMsg { |
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msg, _ = keyvals[i+1].(string) |
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continue |
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} |
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fields[key] = keyvals[i+1] |
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} |
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if len(fields) > 0 { |
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l.log.WithFields(fields).Log(logrusLevel, msg) |
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} else { |
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l.log.Log(logrusLevel, msg) |
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} |
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return |
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} |
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type Option func(log *logrus.Logger) |
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func Level(level logrus.Level) Option { |
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return func(log *logrus.Logger) { |
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log.Level = level |
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} |
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} |
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func Output(w io.Writer) Option { |
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return func(log *logrus.Logger) { |
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log.Out = w |
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} |
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} |
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func Formatter(formatter logrus.Formatter) Option { |
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return func(log *logrus.Logger) { |
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log.Formatter = formatter |
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} |
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} |
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@ -0,0 +1,35 @@ |
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package log |
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import ( |
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"bytes" |
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"strings" |
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"testing" |
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"github.com/go-kratos/kratos/v2/log" |
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"github.com/sirupsen/logrus" |
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"github.com/stretchr/testify/assert" |
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) |
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func TestLoggerLog(t *testing.T) { |
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tests := map[string]struct { |
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level logrus.Level |
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formatter logrus.Formatter |
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logLevel log.Level |
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kvs []interface{} |
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want string |
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}{ |
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"json format": {level: logrus.InfoLevel, formatter: &logrus.JSONFormatter{}, logLevel: log.LevelInfo, kvs: []interface{}{"case", "json format", "msg", "1"}, want: `{"case":"json format","level":"info","msg":"1"`}, |
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"level unmatch": {level: logrus.InfoLevel, formatter: &logrus.JSONFormatter{}, logLevel: log.LevelDebug, kvs: []interface{}{"case", "level unmatch", "msg", "1"}, want: ""}, |
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"no tags": {level: logrus.InfoLevel, formatter: &logrus.JSONFormatter{}, logLevel: log.LevelInfo, kvs: []interface{}{"msg", "1"}, want: `{"level":"info","msg":"1"`}, |
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} |
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for name, test := range tests { |
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t.Run(name, func(t *testing.T) { |
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output := new(bytes.Buffer) |
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logger := NewLogrusLogger(Level(test.level), Formatter(test.formatter), Output(output)) |
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_ = logger.Log(test.logLevel, test.kvs...) |
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assert.True(t, strings.HasPrefix(output.String(), test.want)) |
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}) |
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} |
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} |
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