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