func RemoteAuction(client yagnats.NATSClient, auctionRequest types.AuctionRequest) types.AuctionResult {
guid := util.RandomGuid()
payload, _ := json.Marshal(auctionRequest)
c := make(chan []byte)
client.Subscribe(guid, func(msg *yagnats.Message) {
c <- msg.Payload
})
client.PublishWithReplyTo("diego.auction", guid, payload)
var responsePayload []byte
select {
case responsePayload = <-c:
case <-time.After(time.Minute):
return types.AuctionResult{}
}
var auctionResult types.AuctionResult
err := json.Unmarshal(responsePayload, &auctionResult)
if err != nil {
panic(err)
}
return auctionResult
}
func Register(c *VcapComponent, mbusClient yagnats.NATSClient) {
mbusClient.Subscribe("vcap.component.discover", func(msg *yagnats.Message) {
Component.Uptime = Component.Start.Elapsed()
b, e := json.Marshal(Component)
if e != nil {
log.Warnf(e.Error())
return
}
mbusClient.Publish(msg.ReplyTo, b)
})
b, e := json.Marshal(Component)
if e != nil {
log.Fatal(e.Error())
panic("Component's information should be correct")
}
mbusClient.Publish("vcap.component.announce", b)
log.Infof("Component %s registered successfully", Component.Type)
}
func (c *VcapComponent) Register(mbusClient yagnats.NATSClient) error {
mbusClient.Subscribe("vcap.component.discover", func(msg *yagnats.Message) {
c.Uptime = c.StartTime.Elapsed()
b, e := json.Marshal(c)
if e != nil {
log.Warnf(e.Error())
return
}
mbusClient.Publish(msg.ReplyTo, b)
})
b, e := json.Marshal(c)
if e != nil {
log.Error(e.Error())
return e
}
mbusClient.Publish("vcap.component.announce", b)
log.Infof("Component %s registered successfully", c.Type)
return nil
}
func NewStartStopListener(messageBus yagnats.NATSClient, conf *config.Config) *StartStopListener {
listener := &StartStopListener{
messageBus: messageBus,
}
messageBus.Subscribe(conf.SenderNatsStartSubject, func(message *yagnats.Message) {
startMessage, err := models.NewStartMessageFromJSON([]byte(message.Payload))
if err != nil {
panic(err)
}
listener.Starts = append(listener.Starts, startMessage)
})
messageBus.Subscribe(conf.SenderNatsStopSubject, func(message *yagnats.Message) {
stopMessage, err := models.NewStopMessageFromJSON([]byte(message.Payload))
if err != nil {
panic(err)
}
listener.Stops = append(listener.Stops, stopMessage)
})
return listener
}
func runSimulation(natsClient yagnats.NATSClient) {
simulationLock = &sync.Mutex{}
simulationWait = &sync.WaitGroup{}
taskTracker = map[string]*taskData{}
msg := stagingMessage{
Count: nTasks,
MemoryMB: taskMemory,
}
payload, err := json.Marshal(msg)
if err != nil {
panic(err)
}
t := time.Now()
logger.Info("simulation.start", nTasks)
simulationWait.Add(nTasks)
_, err = natsClient.Subscribe("info.stager.*.staging-request.desire", func(msg *yagnats.Message) {
var desiredLog struct {
Timestamp time.Time `json:"_timestamp"`
Task models.Task `json:"task"`
}
err := json.Unmarshal(msg.Payload, &desiredLog)
if err != nil {
panic(err)
}
registerDesired(desiredLog.Task.Guid, desiredLog.Timestamp)
})
_, err = natsClient.Subscribe("error.>", func(msg *yagnats.Message) {
var errorLog struct {
Timestamp time.Time `json:"_timestamp"`
Error string `json:"error"`
}
err := json.Unmarshal(msg.Payload, &errorLog)
if err != nil {
panic(err)
}
registerError(msg.Subject+": "+errorLog.Error, errorLog.Timestamp)
})
_, err = natsClient.Subscribe("fatal.>", func(msg *yagnats.Message) {
var errorLog struct {
Timestamp time.Time `json:"_timestamp"`
Error string `json:"error"`
}
err := json.Unmarshal(msg.Payload, &errorLog)
if err != nil {
panic(err)
}
registerError(msg.Subject+": "+errorLog.Error, errorLog.Timestamp)
})
executorIndexes := map[string]int{}
_, err = natsClient.Subscribe("completed-task", func(msg *yagnats.Message) {
defer func() {
e := recover()
if e != nil {
logger.Error("RECOVERED PANIC:", e)
}
}()
var task *models.Task
err := json.Unmarshal(msg.Payload, &task)
if err != nil {
panic(err)
}
simulationLock.Lock()
index, ok := executorIndexes[task.ExecutorID]
if !ok {
index = len(executorIndexes) + 1
executorIndexes[task.ExecutorID] = index
}
data, ok := taskTracker[task.Guid]
if !ok {
logger.Error("uknown.runonce.completed", task.Guid, "executor", task.ExecutorID)
simulationLock.Unlock()
return
}
data.CompletionTime = float64(time.Now().UnixNano()) / 1e9
logger.Info("runonce.completed", task.Guid, "executor", task.ExecutorID, "duration", data.CompletionTime-data.DesiredTime)
data.ExecutorIndex = index
data.NumCompletions++
simulationLock.Unlock()
simulationWait.Done()
})
if err != nil {
panic(err)
}
err = natsClient.PublishWithReplyTo("stage", "completed-task", payload)
if err != nil {
panic(err)
}
cleanup.Register(func() {
dt := time.Since(t)
logger.Info("simulation.end", nTasks, "runtime", dt)
simulationResult(dt)
simulationErrors()
})
simulationWait.Wait()
}