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Added SkipLineEnding to zapcore.EncoderConfig #989

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Nov 9, 2021
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10 changes: 6 additions & 4 deletions zapcore/console_encoder.go
Original file line number Diff line number Diff line change
Expand Up @@ -125,10 +125,12 @@ func (c consoleEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer,
line.AppendString(ent.Stack)
}

if c.LineEnding != "" {
line.AppendString(c.LineEnding)
} else {
line.AppendString(DefaultLineEnding)
if !c.SkipLineEnding {
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@sywhang sywhang Nov 8, 2021

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It'd be preferable to change DefaultLineEnding to an empty string instead of doing this because this is essentially adding an additional boolean check even for configs that didn't specify the SkipLineEnding every time we encode.

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@lruggieri lruggieri Nov 9, 2021

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Wouldn't changing the default value mean breaking backward compatibility? I suppose there are people expecting to see their logs going to a new line every time, and pulling a change like that would break that behavior, I think.

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sorry, I should've been more clear w/ my comment - I meant that you'd just need to change DefaultLineEnding to an empty string if SkipLineEnding is set to true.

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I see. So merging with your other comment below if would be changing SkipLineEnding to a var and computing the "real" LineEnding at NewXEncoder time, right?

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SkipLineEnding can stay in EncoderConfig; What I'd imagine would change is somewhere along the lines of:

 func newJSONEncoder(cfg EncoderConfig, spaced bool) *jsonEncoder {
+       if c.SkipLineEnding {
+               cfg.LineEnding = ""
+       } else if cfg.LineEnding == "" {
+               cfg.LineEnding = DefaultLineEnding
+       }

And in these lines, we'd simply need to do:
line.AppendString(cfg.LineEnding) instead of doing the if checks over and over.

NewConsoleEncoder uses newJSONEncoder so you wouldn't need to change anything else.

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should be handled within the new commit

if c.LineEnding != "" {
line.AppendString(c.LineEnding)
} else {
line.AppendString(DefaultLineEnding)
}
}
return line, nil
}
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17 changes: 9 additions & 8 deletions zapcore/encoder.go
Original file line number Diff line number Diff line change
Expand Up @@ -312,14 +312,15 @@ func (e *NameEncoder) UnmarshalText(text []byte) error {
type EncoderConfig struct {
// Set the keys used for each log entry. If any key is empty, that portion
// of the entry is omitted.
MessageKey string `json:"messageKey" yaml:"messageKey"`
LevelKey string `json:"levelKey" yaml:"levelKey"`
TimeKey string `json:"timeKey" yaml:"timeKey"`
NameKey string `json:"nameKey" yaml:"nameKey"`
CallerKey string `json:"callerKey" yaml:"callerKey"`
FunctionKey string `json:"functionKey" yaml:"functionKey"`
StacktraceKey string `json:"stacktraceKey" yaml:"stacktraceKey"`
LineEnding string `json:"lineEnding" yaml:"lineEnding"`
MessageKey string `json:"messageKey" yaml:"messageKey"`
LevelKey string `json:"levelKey" yaml:"levelKey"`
TimeKey string `json:"timeKey" yaml:"timeKey"`
NameKey string `json:"nameKey" yaml:"nameKey"`
CallerKey string `json:"callerKey" yaml:"callerKey"`
FunctionKey string `json:"functionKey" yaml:"functionKey"`
StacktraceKey string `json:"stacktraceKey" yaml:"stacktraceKey"`
SkipLineEnding bool `json:"skipLineEnding" yaml:"skipLineEnding"`
LineEnding string `json:"lineEnding" yaml:"lineEnding"`
// Configure the primitive representations of common complex types. For
// example, some users may want all time.Times serialized as floating-point
// seconds since epoch, while others may prefer ISO8601 strings.
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20 changes: 20 additions & 0 deletions zapcore/encoder_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,26 @@ func TestEncoderConfiguration(t *testing.T) {
expectedJSON: `{"L":"info","T":0,"N":"main","C":"foo.go:42","F":"foo.Foo","M":"hello","S":"fake-stack"}` + "\n",
expectedConsole: "0\tinfo\tmain\tfoo.go:42\tfoo.Foo\thello\nfake-stack\n",
},
{
desc: "skip line ending if SkipLineEnding is 'true'",
cfg: EncoderConfig{
LevelKey: "L",
TimeKey: "T",
MessageKey: "M",
NameKey: "N",
CallerKey: "C",
FunctionKey: "F",
StacktraceKey: "S",
LineEnding: base.LineEnding,
SkipLineEnding: true,
EncodeTime: base.EncodeTime,
EncodeDuration: base.EncodeDuration,
EncodeLevel: base.EncodeLevel,
EncodeCaller: base.EncodeCaller,
},
expectedJSON: `{"L":"info","T":0,"N":"main","C":"foo.go:42","F":"foo.Foo","M":"hello","S":"fake-stack"}`,
expectedConsole: "0\tinfo\tmain\tfoo.go:42\tfoo.Foo\thello\nfake-stack",
},
{
desc: "skip level if LevelKey is omitted",
cfg: EncoderConfig{
Expand Down
10 changes: 6 additions & 4 deletions zapcore/json_encoder.go
Original file line number Diff line number Diff line change
Expand Up @@ -396,10 +396,12 @@ func (enc *jsonEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer,
final.AddString(final.StacktraceKey, ent.Stack)
}
final.buf.AppendByte('}')
if final.LineEnding != "" {
final.buf.AppendString(final.LineEnding)
} else {
final.buf.AppendString(DefaultLineEnding)
if !final.SkipLineEnding {
if final.LineEnding != "" {
final.buf.AppendString(final.LineEnding)
} else {
final.buf.AppendString(DefaultLineEnding)
}
}

ret := final.buf
Expand Down