mirror of
https://github.com/gogrlx/nats-server.git
synced 2026-04-02 03:38:42 -07:00
2153a45050
for the process name and service name. This allows the reuse of this code in NATS Streaming Server by invoking the new setters to change the service and process names. Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
128 lines
3.2 KiB
Go
128 lines
3.2 KiB
Go
// Copyright 2012-2018 The NATS Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !windows
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package logger
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import (
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"fmt"
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"log"
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"log/syslog"
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"net/url"
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"os"
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"strings"
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)
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// SysLogger provides a system logger facility
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type SysLogger struct {
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writer *syslog.Writer
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debug bool
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trace bool
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}
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// SetSyslogName sets the name to use for the syslog.
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// Currently used only on Windows.
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func SetSyslogName(name string) {}
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// GetSysLoggerTag generates the tag name for use in syslog statements. If
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// the executable is linked, the name of the link will be used as the tag,
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// otherwise, the name of the executable is used. "gnatsd" is the default
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// for the NATS server.
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func GetSysLoggerTag() string {
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procName := os.Args[0]
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if strings.ContainsRune(procName, os.PathSeparator) {
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parts := strings.FieldsFunc(procName, func(c rune) bool {
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return c == os.PathSeparator
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})
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procName = parts[len(parts)-1]
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}
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return procName
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}
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// NewSysLogger creates a new system logger
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func NewSysLogger(debug, trace bool) *SysLogger {
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w, err := syslog.New(syslog.LOG_DAEMON|syslog.LOG_NOTICE, GetSysLoggerTag())
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if err != nil {
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log.Fatalf("error connecting to syslog: %q", err.Error())
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}
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return &SysLogger{
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writer: w,
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debug: debug,
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trace: trace,
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}
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}
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// NewRemoteSysLogger creates a new remote system logger
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func NewRemoteSysLogger(fqn string, debug, trace bool) *SysLogger {
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network, addr := getNetworkAndAddr(fqn)
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w, err := syslog.Dial(network, addr, syslog.LOG_DEBUG, GetSysLoggerTag())
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if err != nil {
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log.Fatalf("error connecting to syslog: %q", err.Error())
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}
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return &SysLogger{
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writer: w,
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debug: debug,
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trace: trace,
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}
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}
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func getNetworkAndAddr(fqn string) (network, addr string) {
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u, err := url.Parse(fqn)
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if err != nil {
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log.Fatal(err)
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}
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network = u.Scheme
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if network == "udp" || network == "tcp" {
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addr = u.Host
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} else if network == "unix" {
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addr = u.Path
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} else {
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log.Fatalf("error invalid network type: %q", u.Scheme)
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}
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return
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}
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// Noticef logs a notice statement
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func (l *SysLogger) Noticef(format string, v ...interface{}) {
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l.writer.Notice(fmt.Sprintf(format, v...))
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}
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// Fatalf logs a fatal error
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func (l *SysLogger) Fatalf(format string, v ...interface{}) {
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l.writer.Crit(fmt.Sprintf(format, v...))
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}
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// Errorf logs an error statement
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func (l *SysLogger) Errorf(format string, v ...interface{}) {
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l.writer.Err(fmt.Sprintf(format, v...))
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}
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// Debugf logs a debug statement
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func (l *SysLogger) Debugf(format string, v ...interface{}) {
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if l.debug {
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l.writer.Debug(fmt.Sprintf(format, v...))
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}
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}
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// Tracef logs a trace statement
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func (l *SysLogger) Tracef(format string, v ...interface{}) {
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if l.trace {
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l.writer.Notice(fmt.Sprintf(format, v...))
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}
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}
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