87 lines
1.2 KiB
Go
87 lines
1.2 KiB
Go
package mycommon
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import (
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"errors"
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"git.makemake.in/kzkzzzz/mycommon/mylog"
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"log"
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"net"
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"os"
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"runtime/debug"
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"sync"
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)
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func SafeFn(fn func()) {
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defer func() {
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if err := recover(); err != nil {
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mylog.Errorf("panic: %s\n%s", err, string(debug.Stack()))
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}
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}()
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fn()
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}
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func SafeGo(fn func()) {
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go func() {
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SafeFn(fn)
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}()
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}
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var (
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getIpOnce = &sync.Once{}
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outBoundIp = "127.0.0.1"
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)
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// GetOutboundIP 获取本机ip
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func GetOutboundIP() string {
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getIpOnce.Do(func() {
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conn, err := net.Dial("udp", "223.5.5.5:53")
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if err != nil {
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log.Printf("get outbound ip err: %s", err)
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return
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}
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defer conn.Close()
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localAddr := conn.LocalAddr().(*net.UDPAddr)
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if localAddr.IP != nil {
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outBoundIp = localAddr.IP.String()
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}
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})
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return outBoundIp
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}
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var (
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getHostNameOnce = &sync.Once{}
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hostName = "unknown"
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)
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// GetHostName 获取hostname
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func GetHostName() string {
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getHostNameOnce.Do(func() {
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v, err := os.Hostname()
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if err != nil {
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log.Printf("get host name err: %s", err)
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return
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}
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hostName = v
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})
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return hostName
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}
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func ExistFile(file string) bool {
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_, err := os.Stat(file)
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if err == nil {
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return true
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}
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if errors.Is(err, os.ErrNotExist) {
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return false
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}
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// 其他错误
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return false
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}
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