BgLogger is alias of `logutil.BgLogger()`.

Event records event in current tracing span.

Eventf records event in current tracing span with format support.

Hex defines a fmt.Stringer for proto.Message.

InitLogger initializes a logger with cfg.

Logger gets a contextual logger from current context.

NewFileLogConfig creates a FileLogConfig.

NewLogConfig creates a LogConfig.

ReplaceLogger replace global logger instance with given log config.

SetLevel sets the zap logger's level.

SetTag sets tag kv-pair in current tracing span.

WithConnID attaches connId to context.

WithKeyValue attaches key/value to context.

WithTraceLogger attaches trace identifier to context.

DefaultLogFormat is the default format of the log.

MB.

DefaultQueryLogMaxLen is the default max length of the query in the log.

DefaultRecordPlanInSlowLog is the default value for whether enable log query plan in the slow log.

DefaultSlowThreshold is the default slow log threshold in millisecond.

DefaultTiDBEnableSlowLog enables TiDB to log slow queries.

OldSlowLogTimeFormat is the first version of the the time format for slow log, This is use for compatibility.

SlowLogTimeFormat is the time format for slow log.

TraceEventKey presents the TraceEventKey in span log.

CtxLogKey indicates the context key for logger public for test usage.

EmptyFileLogConfig is an empty FileLogConfig.

SlowQueryLogger is used to log slow query, InitLogger will modify it according to config file.

FileLogConfig serializes file log related config in toml/json.

LogConfig serializes log related config in toml/json.