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logging: Add doc about which fields can't be filtered

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Matthew Holt 2020-01-01 13:56:27 -07:00
parent dff78d82ce
commit a6df4cdbbc
1 changed files with 5 additions and 0 deletions
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5
modules/logging/filterencoder.go
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@ -44,6 +44,11 @@ type FilterEncoder struct {
// layer of nesting with `>`. In other words, for an
// object like `{"a":{"b":0}}`, the inner field can
// be referenced as `a>b`.
//
// The following fields are fundamental to the log and
// cannot be filtered because they are added by the
// underlying logging library as special cases: ts,
// level, logger, and msg.
FieldsRaw map[string]json.RawMessage `json:"fields,omitempty" caddy:"namespace=caddy.logging.encoders.filter inline_key=filter"`
wrapped zapcore.Encoder