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metrics.go
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metrics.go
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package main
import (
"github.com/deepfence/ThreatMapper/deepfence_utils/directory"
"github.com/deepfence/ThreatMapper/deepfence_utils/log"
"github.com/deepfence/ThreatMapper/deepfence_worker/cronjobs"
"github.com/deepfence/ThreatMapper/deepfence_worker/processors"
"github.com/hibiken/asynq"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/collectors"
)
func NewMetrics(mode string) *prometheus.Registry {
registry := prometheus.NewRegistry()
// Add go runtime metrics and process collectors.
registry.MustRegister(
collectors.NewGoCollector(),
collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
)
// register prometheus metrics collectors
switch mode {
case "ingester":
registry.MustRegister(processors.CommitNeo4jRecordsCounts, processors.KafkaTopicsLag)
case "worker":
registry.MustRegister(newWorkerCollector(), cronjobs.NotificationRecordsCounts)
}
return registry
}
type WorkerCollector struct {
tasks *prometheus.Desc
}
func newWorkerCollector() *WorkerCollector {
return &WorkerCollector{
tasks: prometheus.NewDesc(
"asynq_tasks",
"asynq tasks by status and queue",
[]string{"namespace", "queue", "task", "status"}, nil,
),
}
}
func (collector *WorkerCollector) Describe(ch chan<- *prometheus.Desc) {
ch <- collector.tasks
}
type tasks struct {
Tasks map[string]*status
}
type status struct {
queue string
active int
pending int
retry int
archived int
completed int
}
func newTaskState() *tasks {
return &tasks{
Tasks: make(map[string]*status),
}
}
func (ts *tasks) Inc(name string, queue string, state asynq.TaskState) {
s, found := ts.Tasks[name]
if !found {
s = &status{active: 0, pending: 0, retry: 0, queue: queue}
ts.Tasks[name] = s
}
switch state {
case asynq.TaskStateActive:
s.active += 1
case asynq.TaskStatePending:
s.pending += 1
case asynq.TaskStateRetry:
s.retry += 1
case asynq.TaskStateArchived:
s.archived += 1
case asynq.TaskStateCompleted:
s.completed += 1
}
}
func (collector *WorkerCollector) Collect(ch chan<- prometheus.Metric) {
for _, namespace := range directory.GetAllNamespaces() {
ctx := directory.NewContextWithNameSpace(namespace)
ns := string(namespace)
log := log.WithCtx(ctx)
log.Info().Msg("collect asynq tasks counts")
worker, err := directory.Worker(ctx)
if err != nil {
log.Error().Err(err).Msg("failed to get worker instance")
return
}
// get all the queues
queues, err := worker.Inspector().Queues()
if err != nil {
log.Error().Err(err).Msg("failed to get worker queues")
return
}
// track task status
status := newTaskState()
// page size for list tasks
pageSize := asynq.PageSize(5000)
for _, q := range queues {
var tasks []*asynq.TaskInfo
var err error
// active tasks
tasks, err = worker.Inspector().ListActiveTasks(q, pageSize)
if err != nil {
log.Error().Err(err).Msgf("failed to get active tasks from queue %s", q)
} else {
for _, task := range tasks {
status.Inc(task.Type, task.Queue, task.State)
}
}
// pending tasks
tasks, err = worker.Inspector().ListPendingTasks(q, pageSize)
if err != nil {
log.Error().Err(err).Msgf("failed to get pending tasks from queue %s", q)
} else {
for _, task := range tasks {
status.Inc(task.Type, task.Queue, task.State)
}
}
// retry tasks
tasks, err = worker.Inspector().ListRetryTasks(q, pageSize)
if err != nil {
log.Error().Err(err).Msgf("failed to get retry tasks from queue %s", q)
} else {
for _, task := range tasks {
status.Inc(task.Type, task.Queue, task.State)
}
}
// archived tasks
tasks, err = worker.Inspector().ListArchivedTasks(q, pageSize)
if err != nil {
log.Error().Err(err).Msgf("failed to get archived tasks from queue %s", q)
} else {
for _, task := range tasks {
status.Inc(task.Type, task.Queue, task.State)
}
}
// completed tasks
tasks, err = worker.Inspector().ListCompletedTasks(q, pageSize)
if err != nil {
log.Error().Err(err).Msgf("failed to get completed tasks from queue %s", q)
} else {
for _, task := range tasks {
status.Inc(task.Type, task.Queue, task.State)
}
}
}
for name, t := range status.Tasks {
ch <- prometheus.MustNewConstMetric(collector.tasks, prometheus.GaugeValue,
float64(t.active), ns, t.queue, name, "active")
ch <- prometheus.MustNewConstMetric(collector.tasks, prometheus.GaugeValue,
float64(t.pending), ns, t.queue, name, "pending")
ch <- prometheus.MustNewConstMetric(collector.tasks, prometheus.GaugeValue,
float64(t.retry), ns, t.queue, name, "retry")
ch <- prometheus.MustNewConstMetric(collector.tasks, prometheus.GaugeValue,
float64(t.archived), ns, t.queue, name, "archived")
ch <- prometheus.MustNewConstMetric(collector.tasks, prometheus.GaugeValue,
float64(t.completed), ns, t.queue, name, "completed")
}
}
}