| package logrus |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| ) |
| |
| type JSONFormatter struct { |
| // TimestampFormat sets the format used for marshaling timestamps. |
| TimestampFormat string |
| } |
| |
| func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) { |
| data := make(Fields, len(entry.Data)+3) |
| for k, v := range entry.Data { |
| switch v := v.(type) { |
| case error: |
| // Otherwise errors are ignored by `encoding/json` |
| // https://github.com/Sirupsen/logrus/issues/137 |
| data[k] = v.Error() |
| default: |
| data[k] = v |
| } |
| } |
| prefixFieldClashes(data) |
| |
| if f.TimestampFormat == "" { |
| f.TimestampFormat = DefaultTimestampFormat |
| } |
| |
| data["time"] = entry.Time.Format(f.TimestampFormat) |
| data["msg"] = entry.Message |
| data["level"] = entry.Level.String() |
| |
| serialized, err := json.Marshal(data) |
| if err != nil { |
| return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err) |
| } |
| return append(serialized, '\n'), nil |
| } |