// UpdateCurrent sets the current queue length.
func (nsqm *NSQMetric) UpdateCurrent() {
var statsMessage StatsMessage
url := "http://" + nsqStatsEndpoint + constNSQStatsAPI
body, err := utils.GetJSON(url)
if err != nil {
log.Errorf("Error getting NSQ metric %v", err)
}
err = json.Unmarshal(body, &statsMessage)
if err != nil {
log.Errorf("Error %v unmarshalling from %s", err, string(body[:]))
}
// Loop through NSQ Channels and Metrics to find the correct value.
for _, topic := range statsMessage.Data.Topics {
if topic.TopicName == nsqm.topicName {
for _, channel := range topic.Channels {
if channel.ChannelName == nsqm.channelName {
nsqm.currentVal = channel.Depth
}
}
}
}
log.Debugf("Topic: %s Channel: %s Length: %d", nsqm.topicName, nsqm.channelName, nsqm.currentVal)
}
// GetApps retrives the app definitions from the server for a given userID
func GetApps(apiAddress string, userID string) (tasks []*demand.Task, maxContainers int, err error) {
url := "http://" + apiAddress + "/apps/" + userID
body, err := utils.GetJSON(url)
if err != nil {
log.Debugf("Failed to get /apps/: %v", err)
return nil, 0, err
}
tasks, maxContainers, err = appsFromResponse(body)
return
}
// CountAllTasks tells us how many instances of each task are currently running.
func (m *MarathonScheduler) CountAllTasks(running *demand.Tasks) error {
var (
err error
appsMessage AppsMessage
)
running.Lock()
defer running.Unlock()
url := m.baseMarathonURL + "apps/"
body, err := utils.GetJSON(url)
if err != nil {
log.Errorf("Error getting Marathon Apps %v", err)
return err
}
err = json.Unmarshal(body, &appsMessage)
if err != nil {
log.Errorf("Error %v unmarshalling from %s", err, string(body[:]))
return err
}
appCounts := make(map[string]int)
// Remove leading slash from App IDs and set the instance counts.
for _, app := range appsMessage.Apps {
appCounts[strings.Replace(app.ID, "/", "", 1)] = app.Instances
}
// Set running counts. Defaults to 0 if the App does not exist.
tasks := running.Tasks
for _, t := range tasks {
t.Running = appCounts[t.Name]
}
return err
}