111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
package publicip
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import (
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"fmt"
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"net"
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"reflect"
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"sync"
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"github.com/qdm12/gluetun/internal/configuration"
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"github.com/qdm12/gluetun/internal/constants"
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"github.com/qdm12/gluetun/internal/models"
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)
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type state struct {
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status models.LoopStatus
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settings configuration.PublicIP
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ip net.IP
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statusMu sync.RWMutex
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settingsMu sync.RWMutex
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ipMu sync.RWMutex
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}
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func (s *state) setStatusWithLock(status models.LoopStatus) {
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s.statusMu.Lock()
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defer s.statusMu.Unlock()
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s.status = status
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}
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func (l *looper) GetStatus() (status models.LoopStatus) {
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l.state.statusMu.RLock()
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defer l.state.statusMu.RUnlock()
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return l.state.status
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}
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func (l *looper) SetStatus(status models.LoopStatus) (outcome string, err error) {
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l.state.statusMu.Lock()
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defer l.state.statusMu.Unlock()
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existingStatus := l.state.status
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switch status {
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case constants.Running:
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switch existingStatus {
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case constants.Starting, constants.Running, constants.Stopping, constants.Crashed:
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return fmt.Sprintf("already %s", existingStatus), nil
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}
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l.loopLock.Lock()
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defer l.loopLock.Unlock()
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l.state.status = constants.Starting
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l.state.statusMu.Unlock()
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l.start <- struct{}{}
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newStatus := <-l.running
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l.state.statusMu.Lock()
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l.state.status = newStatus
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return newStatus.String(), nil
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case constants.Stopped:
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switch existingStatus {
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case constants.Stopped, constants.Stopping, constants.Starting, constants.Crashed:
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return fmt.Sprintf("already %s", existingStatus), nil
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}
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l.loopLock.Lock()
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defer l.loopLock.Unlock()
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l.state.status = constants.Stopping
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l.state.statusMu.Unlock()
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l.stop <- struct{}{}
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<-l.stopped
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l.state.statusMu.Lock()
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l.state.status = status
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return status.String(), nil
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default:
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return "", fmt.Errorf("status %q can only be %q or %q",
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status, constants.Running, constants.Stopped)
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}
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}
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func (l *looper) GetSettings() (settings configuration.PublicIP) {
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l.state.settingsMu.RLock()
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defer l.state.settingsMu.RUnlock()
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return l.state.settings
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}
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func (l *looper) SetSettings(settings configuration.PublicIP) (outcome string) {
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l.state.settingsMu.Lock()
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defer l.state.settingsMu.Unlock()
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settingsUnchanged := reflect.DeepEqual(settings, l.state.settings)
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if settingsUnchanged {
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return "settings left unchanged"
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}
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periodChanged := l.state.settings.Period != settings.Period
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l.state.settings = settings
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if periodChanged {
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l.updateTicker <- struct{}{}
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// TODO blocking
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}
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return "settings updated"
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}
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func (l *looper) GetPublicIP() (publicIP net.IP) {
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l.state.ipMu.RLock()
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defer l.state.ipMu.RUnlock()
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publicIP = make(net.IP, len(l.state.ip))
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copy(publicIP, l.state.ip)
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return publicIP
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}
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func (s *state) setPublicIP(publicIP net.IP) {
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s.ipMu.Lock()
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defer s.ipMu.Unlock()
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s.ip = make(net.IP, len(publicIP))
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copy(s.ip, publicIP)
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}
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