GetRealIPFromContext get the remote endpoint from request, if not found, return an empty string.

GetTraceFromContext get the Trace var from the context, if there is no such a trace utility, return nil.

GetTraceFromRequest get the Trace var from the req context, if there is no such a trace utility, return nil.

HandleCrash xx.

HandleFunc wrap a trace handle func outer the original http handle func.

LogCrashStack for stack.

New will create a Trace using a name, identifying the trace process.

copy this from glog.

WithID will create a Trace with a name and a trace id.

WithParent will create a Trace use a parent Trace and a identified name.

WithTraceForContext will return a new context wrapped a trace handler around the original ctx.

WithTraceForContext2 will return a new context wrapped a trace handler around the original ctx.

WithTraceForContext will return a new context wrapped a trace handler around the original ctx.

Trace is a log trace utils wrapped on glog, can be used to trace a http request and its subrequests.