msgtrace

Documentation

Index

• func CompilePatterns(raw []string) (compiled []*regexp.Regexp, bad []string)
• func ExtractTrace(msg string, extra []*regexp.Regexp) (traceID, spanID string, ok bool)
• func ParseBracketIDs(msg string) (traceID, spanID string, ok bool)

Functions

func CompilePatterns

func CompilePatterns(raw []string) (compiled []*regexp.Regexp, bad []string)

CompilePatterns compiles user-supplied trace patterns from field-map, skipping any that fail to compile (reported via the returned bad list so callers can warn). It never returns an error — a bad custom pattern must not break a query.

func ExtractTrace

func ExtractTrace(msg string, extra []*regexp.Regexp) (traceID, spanID string, ok bool)

ExtractTrace pulls a traceId (and spanId when the format carries one) out of a log message. `extra` patterns from field-map are tried before the built-ins so users can teach it a custom shape. A pattern's first capture group is the traceId; a second group, when present, is the spanId. Returns ok=false when no pattern matches.

func ParseBracketIDs

func ParseBracketIDs(msg string) (traceID, spanID string, ok bool)

ParseBracketIDs extracts the MDC bracket-prefix traceId/spanId. Retained as a thin compatibility wrapper over ExtractTrace's first built-in pattern so older call sites keep their exact (bracket-only) semantics.