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go-chasquid-smtp/internal/trace/trace.go
Alberto Bertogli 3e6dd12d06 Improve debugging and tracing information
This patch reviews various debug and informational messages, making more
uniform use of tracing, and extends the monitoring http server with
useful information like an index and a queue dump.
2016-10-10 00:51:05 +01:00

76 lines
1.4 KiB
Go

// Package trace extends golang.org/x/net/trace.
package trace
import (
"fmt"
"strconv"
"github.com/golang/glog"
nettrace "golang.org/x/net/trace"
)
type Trace struct {
family string
title string
t nettrace.Trace
}
func New(family, title string) *Trace {
return &Trace{family, title, nettrace.New(family, title)}
}
func (t *Trace) Printf(format string, a ...interface{}) {
t.t.LazyPrintf(format, a...)
if glog.V(0) {
msg := fmt.Sprintf("%s %s: %s", t.family, t.title,
quote(fmt.Sprintf(format, a...)))
glog.InfoDepth(2, msg)
}
}
func (t *Trace) Debugf(format string, a ...interface{}) {
if glog.V(2) {
t.t.LazyPrintf(format, a...)
msg := fmt.Sprintf("%s %s: %s", t.family, t.title,
quote(fmt.Sprintf(format, a...)))
glog.InfoDepth(2, msg)
}
}
func quote(s string) string {
qs := strconv.Quote(s)
return qs[1 : len(qs)-1]
}
func (t *Trace) SetError() {
t.t.SetError()
}
func (t *Trace) Errorf(format string, a ...interface{}) error {
err := fmt.Errorf(format, a...)
t.t.SetError()
t.t.LazyPrintf("error: %v", err)
if glog.V(0) {
msg := fmt.Sprintf("%s %s: error: %v", t.family, t.title, err)
glog.InfoDepth(1, msg)
}
return err
}
func (t *Trace) Error(err error) error {
t.t.SetError()
t.t.LazyPrintf("error: %v", err)
if glog.V(0) {
msg := fmt.Sprintf("%s %s: error: %v", t, t.family, t.title, err)
glog.InfoDepth(1, msg)
}
return err
}
func (t *Trace) Finish() {
t.t.Finish()
}