func (group *firehoseGroup) Exists(sink sinks.Sink) bool {
group.Lock()
defer group.Unlock()
for _, sinkWrapper := range group.sinkWrappers {
if sink.Identifier() == sinkWrapper.Sink.Identifier() {
return true
}
}
return false
}
func (group *GroupedSinks) IsFirehoseRegistered(sink sinks.Sink) bool {
group.RLock()
defer group.RUnlock()
subscriptionId := sink.AppID()
if subscriptionId == "" {
return false
}
fgroup := group.firehoses[subscriptionId]
if fgroup == nil {
return false
}
return fgroup.Exists(sink)
}
func (group *GroupedSinks) RegisterFirehoseSink(in chan<- *events.Envelope, sink sinks.Sink) bool {
group.Lock()
defer group.Unlock()
subscriptionId := sink.AppID()
if subscriptionId == "" {
return false
}
fgroup := group.firehoses[subscriptionId]
if fgroup == nil {
group.firehoses[subscriptionId] = firehose_group.NewFirehoseGroup()
fgroup = group.firehoses[subscriptionId]
}
return fgroup.AddSink(sink, in)
}
func (sinkManager *SinkManager) RegisterSink(sink sinks.Sink) bool {
inputChan := make(chan *events.Envelope, 128)
ok := sinkManager.sinks.RegisterAppSink(inputChan, sink)
if !ok {
return false
}
sinkManager.metrics.Inc(sink)
sinkManager.logger.Debugf("SinkManager: Sink with identifier %v requested. Opened it.", sink.Identifier())
go func() {
sink.Run(inputChan)
sinkManager.UnregisterSink(sink)
}()
return true
}
func (group *GroupedSinks) CloseAndDeleteFirehose(sink sinks.Sink) bool {
group.Lock()
defer group.Unlock()
firehoseSubscriptionId := sink.AppID()
fgroup, ok := group.firehoses[firehoseSubscriptionId]
if !ok {
return false
}
removed := fgroup.RemoveSink(sink)
if removed == false {
return false
}
if fgroup.IsEmpty() == true {
delete(group.firehoses, firehoseSubscriptionId)
}
return true
}
func (group *GroupedSinks) RegisterAppSink(in chan<- *events.Envelope, sink sinks.Sink) bool {
group.Lock()
defer group.Unlock()
appId := sink.AppID()
if appId == "" || sink.Identifier() == "" {
return false
}
sinksForApp := group.apps[appId]
if sinksForApp == nil {
group.apps[appId] = make(map[string]*sink_wrapper.SinkWrapper)
sinksForApp = group.apps[appId]
}
if _, ok := sinksForApp[sink.Identifier()]; ok {
return false
}
sinksForApp[sink.Identifier()] = &sink_wrapper.SinkWrapper{InputChan: in, Sink: sink}
return true
}
func (group *GroupedSinks) CloseAndDelete(sink sinks.Sink) bool {
group.Lock()
defer group.Unlock()
appId := sink.AppID()
wrapper, ok := group.apps[appId][sink.Identifier()]
if ok {
close(wrapper.InputChan)
delete(group.apps[appId], sink.Identifier())
return true
}
return false
}
func (sinkManager *SinkManager) UnregisterSink(sink sinks.Sink) {
ok := sinkManager.sinks.CloseAndDelete(sink)
if !ok {
return
}
sinkManager.metrics.Dec(sink)
if syslogSink, ok := sink.(*syslog.SyslogSink); ok {
syslogSink.Disconnect()
}
sinkManager.logger.Debugf("SinkManager: Sink with identifier %s requested closing. Closed it.", sink.Identifier())
}
func (sinkManager *SinkManager) UnregisterFirehoseSink(sink sinks.Sink) {
ok := sinkManager.sinks.CloseAndDeleteFirehose(sink)
if !ok {
return
}
sinkManager.metrics.DecFirehose()
sinkManager.logger.Debugf("SinkManager: Firehose Sink with identifier %s requested closing. Closed it.", sink.Identifier())
}