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Format reference
goodsign edited this page May 14, 2014
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- Message context:
- %Level - log level (Trace, Debug, Info, Warn, Error, Critical)
- %Lev - short log level (Trc, Dbg, Inf, Wrn, Err, Crt)
- %LEVEL - capitalized log level (TRACE, DEBUG, INFO, WARN, ERROR, CRITICAL)
- %LEV - short capitalized log level (TRC, DBG, INF, WRN, ERR, CRT)
- %l - super compact log level (t, d, i, w, e, c)
- %Msg - message text (string)
- %FullPath - full caller file path
- %File - caller filename only
- %RelFile - caller path relative to the application runtime directory
- %Func - caller function name
- %FuncShort - caller function name part after the last dot
- %Line - line number where logger was called
- Date and time
- %Ns - time.Now().UnixNano()
- %Date - shortcut for ‘2006-01-02’
- %Time - shortcut for ‘15:04:05’
- %Date(...) - date with format, specified in parentheses. Uses standard time.Format, so check http://golang.org/src/pkg/time/format.go for identifiers list. Use it like that: "%Date(2006-01-02)" (or any other format)
- %UTCNs - time.Now().UTC().UnixNano()
- %UTCDate - shortcut for ‘2006-01-02’ (UTC)
- %UTCTime - shortcut for ‘15:04:05’ (UTC)
- %UTCDate(...) - UTC date with format, specified in parentheses. Uses standard time.Format, so check http://golang.org/src/pkg/time/format.go for identifiers list. Use it like that: "%UTCDate(2006-01-02)" (or any other format)
- Special symbols
- %EscN - terminal ANSI CSI n [;k] m escape. Check Colored output for details
- %n - newline
- %t - tab
Full name of a format identifier consists of the prefix std: and one of the identifiers listed below. Here is a full list of id-format pairs:
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xml-debug:
<time>%Ns</time><lev>%Lev</lev><msg>%Msg</msg><path>%RelFile</path><func>%Func</func>
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xml-debug-short:
<t>%Ns</t><l>%l</l><m>%Msg</m><p>%RelFile</p><f>%Func</f>
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xml:
<time>%Ns</time><lev>%Lev</lev><msg>%Msg</msg>
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xml-short:
<t>%Ns</t><l>%l</l><m>%Msg</m>
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json-debug:
{"time":%Ns,"lev":"%Lev","msg":"%Msg","path":"%RelFile","func":"%Func"}
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json-debug-short:
{"t":%Ns,"l":"%Lev","m":"%Msg","p":"%RelFile","f":"%Func"}
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json:
{"time":%Ns,"lev":"%Lev","msg":"%Msg"}
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json-short:
{"t":%Ns,"l":"%Lev","m":"%Msg"}
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debug:
[%LEVEL] %RelFile:%Func %Date %Time %Msg%n
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debug-short:
[%LEVEL] %Date %Time %Msg%n
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fast:
%Ns %l %Msg%n