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79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
package logrus
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import "time"
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// Default key names for the default fields
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const (
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defaultTimestampFormat = time.RFC3339
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FieldKeyMsg = "msg"
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FieldKeyLevel = "level"
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FieldKeyTime = "time"
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FieldKeyLogrusError = "logrus_error"
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FieldKeyFunc = "func"
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FieldKeyFile = "file"
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)
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// The Formatter interface is used to implement a custom Formatter. It takes an
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// `Entry`. It exposes all the fields, including the default ones:
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//
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// * `entry.Data["msg"]`. The message passed from Info, Warn, Error ..
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// * `entry.Data["time"]`. The timestamp.
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// * `entry.Data["level"]. The level the entry was logged at.
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//
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// Any additional fields added with `WithField` or `WithFields` are also in
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// `entry.Data`. Format is expected to return an array of bytes which are then
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// logged to `logger.Out`.
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type Formatter interface {
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Format(*Entry) ([]byte, error)
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}
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// This is to not silently overwrite `time`, `msg`, `func` and `level` fields when
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// dumping it. If this code wasn't there doing:
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//
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// logrus.WithField("level", 1).Info("hello")
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//
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// Would just silently drop the user provided level. Instead with this code
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// it'll logged as:
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//
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// {"level": "info", "fields.level": 1, "msg": "hello", "time": "..."}
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//
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// It's not exported because it's still using Data in an opinionated way. It's to
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// avoid code duplication between the two default formatters.
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func prefixFieldClashes(data Fields, fieldMap FieldMap, reportCaller bool) {
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timeKey := fieldMap.resolve(FieldKeyTime)
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if t, ok := data[timeKey]; ok {
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data["fields."+timeKey] = t
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delete(data, timeKey)
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}
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msgKey := fieldMap.resolve(FieldKeyMsg)
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if m, ok := data[msgKey]; ok {
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data["fields."+msgKey] = m
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delete(data, msgKey)
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}
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levelKey := fieldMap.resolve(FieldKeyLevel)
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if l, ok := data[levelKey]; ok {
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data["fields."+levelKey] = l
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delete(data, levelKey)
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}
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logrusErrKey := fieldMap.resolve(FieldKeyLogrusError)
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if l, ok := data[logrusErrKey]; ok {
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data["fields."+logrusErrKey] = l
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delete(data, logrusErrKey)
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}
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// If reportCaller is not set, 'func' will not conflict.
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if reportCaller {
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funcKey := fieldMap.resolve(FieldKeyFunc)
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if l, ok := data[funcKey]; ok {
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data["fields."+funcKey] = l
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}
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fileKey := fieldMap.resolve(FieldKeyFile)
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if l, ok := data[fileKey]; ok {
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data["fields."+fileKey] = l
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}
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}
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}
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