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logger.go
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logger.go
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// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
//
// This software (Documize Community Edition) is licensed under
// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
//
// You can operate outside the AGPL restrictions by purchasing
// Documize Enterprise Edition and obtaining a commercial license
// by contacting <sales@documize.com>.
//
// https://documize.com
// Package logging defines application-wide logging implementation.
package logging
import (
"bytes"
"fmt"
"log"
"os"
"runtime"
"github.com/documize/community/core/env"
"github.com/jmoiron/sqlx"
)
// Logger is how we log.
type Logger struct {
db *sqlx.DB
log *log.Logger
trace bool // shows Info() entries
}
// Info logs message.
func (l Logger) Info(message string) {
l.log.Println(message)
}
// Infof logs message via Sprintf.
func (l Logger) Infof(message string, a ...interface{}) {
l.log.Println(fmt.Sprintf(message, a))
}
// Trace logs message if tracing enabled.
func (l Logger) Trace(message string) {
if l.trace {
l.log.Println(message)
}
}
// Error logs error with message.
func (l Logger) Error(message string, err error) {
l.log.Println(message)
l.log.Println(err)
stack := make([]byte, 4096)
runtime.Stack(stack, false)
if idx := bytes.IndexByte(stack, 0); idx > 0 && idx < len(stack) {
stack = stack[:idx] // remove trailing nulls from stack dump
}
l.log.Println(fmt.Sprintf("%s", stack))
}
// SetDB associates database connection with given logger.
// Logger will also record messages to database given valid database connection.
func (l Logger) SetDB(logger env.Logger, db *sqlx.DB) env.Logger {
l.db = db
return logger
}
// NewLogger returns initialized logging instance.
func NewLogger(trace bool) env.Logger {
l := log.New(os.Stdout, "", 0)
l.SetOutput(os.Stdout)
// log.SetOutput(os.Stdout)
var logger Logger
logger.log = l
logger.trace = trace
return logger
}