mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-12-06 05:37:51 +08:00
179 lines
4.1 KiB
Go
179 lines
4.1 KiB
Go
// RAINBOND, Application Management Platform
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// Copyright (C) 2014-2019 Goodrain Co., Ltd.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package util
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import (
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"context"
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"net"
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"sync"
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"time"
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"github.com/sirupsen/logrus"
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)
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//IPEVENTTYPE ip change event type
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type IPEVENTTYPE int
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//IPEVENT ip change event
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type IPEVENT struct {
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Type IPEVENTTYPE
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IP net.IP
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}
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//IPPool ip pool
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type IPPool struct {
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ctx context.Context
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cancel context.CancelFunc
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lock sync.Mutex
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HostIPs map[string]net.IP
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EventCh chan IPEVENT
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StopCh chan struct{}
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ignoreInterfaceName []string
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startReady chan struct{}
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once sync.Once
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}
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const (
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//ADD add event
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ADD IPEVENTTYPE = iota
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//DEL del event
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DEL
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//UPDATE update event
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UPDATE
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)
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//NewIPPool new ip pool
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func NewIPPool(ignoreInterfaceName []string) *IPPool {
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ctx, cancel := context.WithCancel(context.Background())
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ippool := &IPPool{
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ctx: ctx,
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cancel: cancel,
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HostIPs: map[string]net.IP{},
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EventCh: make(chan IPEVENT, 1024),
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StopCh: make(chan struct{}),
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ignoreInterfaceName: ignoreInterfaceName,
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startReady: make(chan struct{}),
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}
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return ippool
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}
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//Ready ready
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func (i *IPPool) Ready() bool {
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logrus.Info("waiting ip pool start ready")
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<-i.startReady
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return true
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}
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//GetHostIPs get host ips
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func (i *IPPool) GetHostIPs() []net.IP {
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i.lock.Lock()
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defer i.lock.Unlock()
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var ips []net.IP
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for _, ip := range i.HostIPs {
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ips = append(ips, ip)
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}
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return ips
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}
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//GetWatchIPChan watch ip change
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func (i *IPPool) GetWatchIPChan() <-chan IPEVENT {
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return i.EventCh
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}
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//Close close
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func (i *IPPool) Close() {
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i.cancel()
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}
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//LoopCheckIPs loop check ips
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func (i *IPPool) LoopCheckIPs() {
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Exec(i.ctx, func() error {
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logrus.Debugf("start loop watch ips from all interface")
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ips, err := i.getInterfaceIPs()
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if err != nil {
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logrus.Errorf("get ip address from interface failure %s, will retry", err.Error())
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return nil
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}
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i.lock.Lock()
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defer i.lock.Unlock()
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var newIP = make(map[string]net.IP)
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for _, v := range ips {
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if v.To4() == nil {
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continue
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}
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_, ok := i.HostIPs[v.To4().String()]
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if ok {
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i.EventCh <- IPEVENT{Type: UPDATE, IP: v.To4()}
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}
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if !ok {
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i.EventCh <- IPEVENT{Type: ADD, IP: v.To4()}
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}
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newIP[v.To4().String()] = v.To4()
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}
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for k, v := range i.HostIPs {
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if _, ok := newIP[k]; !ok {
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i.EventCh <- IPEVENT{Type: DEL, IP: v.To4()}
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}
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}
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logrus.Debugf("loop watch ips from all interface, find %d ips", len(newIP))
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i.HostIPs = newIP
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i.once.Do(func() {
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close(i.startReady)
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})
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return nil
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}, time.Second*5)
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}
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func (i *IPPool) getInterfaceIPs() ([]net.IP, error) {
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var ips []net.IP
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tables, err := net.Interfaces()
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if err != nil {
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return nil, err
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}
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for _, table := range tables {
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if StringArrayContains(i.ignoreInterfaceName, table.Name) {
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logrus.Debugf("ip address from interface %s ignore", table.Name)
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continue
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}
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addrs, err := table.Addrs()
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if err != nil {
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return nil, err
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}
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for _, address := range addrs {
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if ipnet := checkIPAddress(address); ipnet != nil {
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if ipnet.IP.To4() != nil {
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ips = append(ips, ipnet.IP.To4())
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}
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}
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}
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}
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return ips, nil
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}
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func checkIPAddress(addr net.Addr) *net.IPNet {
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ipnet, ok := addr.(*net.IPNet)
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if !ok {
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return nil
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}
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if ipnet.IP.IsLoopback() {
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return nil
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}
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return ipnet
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}
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