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scheduler.go
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scheduler.go
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package controller
import (
"context"
"strconv"
"time"
"github.com/go-redis/redis/v8"
"github.com/mvisonneau/gitlab-ci-pipelines-exporter/pkg/config"
"github.com/mvisonneau/gitlab-ci-pipelines-exporter/pkg/monitor"
"github.com/mvisonneau/gitlab-ci-pipelines-exporter/pkg/schemas"
log "github.com/sirupsen/logrus"
"github.com/vmihailenco/taskq/v3"
"github.com/vmihailenco/taskq/v3/memqueue"
"github.com/vmihailenco/taskq/v3/redisq"
)
const bufferSize = 1000
// TaskController holds task related clients
type TaskController struct {
Factory taskq.Factory
Queue taskq.Queue
TaskMap *taskq.TaskMap
TaskSchedulingMonitoring map[schemas.TaskType]*monitor.TaskSchedulingStatus
}
// NewTaskController initializes and returns a new TaskController object
func NewTaskController(r *redis.Client) (t TaskController) {
t.TaskMap = &taskq.TaskMap{}
queueOptions := &taskq.QueueOptions{
Name: "default",
PauseErrorsThreshold: 3,
Handler: t.TaskMap,
BufferSize: bufferSize,
// Disable system resources checks
MinSystemResources: taskq.SystemResources{
Load1PerCPU: -1,
MemoryFreeMB: 0,
MemoryFreePercentage: 0,
},
}
if r != nil {
t.Factory = redisq.NewFactory()
queueOptions.Redis = r
} else {
t.Factory = memqueue.NewFactory()
}
t.Queue = t.Factory.RegisterQueue(queueOptions)
// Purge the queue when we start
// I am only partially convinced this will not cause issues in HA fashion
if err := t.Queue.Purge(); err != nil {
log.WithField("error", err.Error()).Error("purging the pulling queue")
}
if r != nil {
if err := t.Factory.StartConsumers(context.TODO()); err != nil {
log.WithError(err).Fatal("starting consuming the task queue")
}
}
t.TaskSchedulingMonitoring = make(map[schemas.TaskType]*monitor.TaskSchedulingStatus)
return
}
// TaskHandlerPullProjectsFromWildcard ..
func (c *Controller) TaskHandlerPullProjectsFromWildcard(ctx context.Context, id string, w config.Wildcard) error {
defer c.unqueueTask(schemas.TaskTypePullProjectsFromWildcard, id)
return c.PullProjectsFromWildcard(ctx, w)
}
// TaskHandlerPullEnvironmentsFromProject ..
func (c *Controller) TaskHandlerPullEnvironmentsFromProject(ctx context.Context, p schemas.Project) {
defer c.unqueueTask(schemas.TaskTypePullEnvironmentsFromProject, string(p.Key()))
// On errors, we do not want to retry these tasks
if p.Pull.Environments.Enabled {
if err := c.PullEnvironmentsFromProject(ctx, p); err != nil {
log.WithFields(log.Fields{
"project-name": p.Name,
"error": err.Error(),
}).Warn("pulling environments from project")
}
}
}
// TaskHandlerPullEnvironmentMetrics ..
func (c *Controller) TaskHandlerPullEnvironmentMetrics(env schemas.Environment) {
defer c.unqueueTask(schemas.TaskTypePullEnvironmentMetrics, string(env.Key()))
// On errors, we do not want to retry these tasks
if err := c.PullEnvironmentMetrics(env); err != nil {
log.WithFields(log.Fields{
"project-name": env.ProjectName,
"environment-name": env.Name,
"environment-id": env.ID,
"error": err.Error(),
}).Warn("pulling environment metrics")
}
}
// TaskHandlerPullRefsFromProject ..
func (c *Controller) TaskHandlerPullRefsFromProject(ctx context.Context, p schemas.Project) {
defer c.unqueueTask(schemas.TaskTypePullRefsFromProject, string(p.Key()))
// On errors, we do not want to retry these tasks
if err := c.PullRefsFromProject(ctx, p); err != nil {
log.WithFields(log.Fields{
"project-name": p.Name,
"error": err.Error(),
}).Warn("pulling refs from project")
}
}
// TaskHandlerPullRefMetrics ..
func (c *Controller) TaskHandlerPullRefMetrics(ref schemas.Ref) {
defer c.unqueueTask(schemas.TaskTypePullRefMetrics, string(ref.Key()))
// On errors, we do not want to retry these tasks
if err := c.PullRefMetrics(ref); err != nil {
log.WithFields(log.Fields{
"project-name": ref.Project.Name,
"ref": ref.Name,
"error": err.Error(),
}).Warn("pulling ref metrics")
}
}
// TaskHandlerPullProjectsFromWildcards ..
func (c *Controller) TaskHandlerPullProjectsFromWildcards(ctx context.Context) {
defer c.unqueueTask(schemas.TaskTypePullProjectsFromWildcards, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypePullProjectsFromWildcards)
log.WithFields(
log.Fields{
"wildcards-count": len(c.Config.Wildcards),
},
).Info("scheduling projects from wildcards pull")
for id, w := range c.Config.Wildcards {
c.ScheduleTask(ctx, schemas.TaskTypePullProjectsFromWildcard, strconv.Itoa(id), strconv.Itoa(id), w)
}
}
// TaskHandlerPullEnvironmentsFromProjects ..
func (c *Controller) TaskHandlerPullEnvironmentsFromProjects(ctx context.Context) {
defer c.unqueueTask(schemas.TaskTypePullEnvironmentsFromProjects, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypePullEnvironmentsFromProjects)
projectsCount, err := c.Store.ProjectsCount()
if err != nil {
log.Error(err.Error())
}
log.WithFields(
log.Fields{
"projects-count": projectsCount,
},
).Info("scheduling environments from projects pull")
projects, err := c.Store.Projects()
if err != nil {
log.Error(err)
}
for _, p := range projects {
c.ScheduleTask(ctx, schemas.TaskTypePullEnvironmentsFromProject, string(p.Key()), p)
}
}
// TaskHandlerPullRefsFromProjects ..
func (c *Controller) TaskHandlerPullRefsFromProjects(ctx context.Context) {
defer c.unqueueTask(schemas.TaskTypePullRefsFromProjects, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypePullRefsFromProjects)
projectsCount, err := c.Store.ProjectsCount()
if err != nil {
log.Error(err.Error())
}
log.WithFields(
log.Fields{
"projects-count": projectsCount,
},
).Info("scheduling refs from projects pull")
projects, err := c.Store.Projects()
if err != nil {
log.Error(err)
}
for _, p := range projects {
c.ScheduleTask(ctx, schemas.TaskTypePullRefsFromProject, string(p.Key()), p)
}
}
// TaskHandlerPullMetrics ..
func (c *Controller) TaskHandlerPullMetrics(ctx context.Context) {
defer c.unqueueTask(schemas.TaskTypePullMetrics, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypePullMetrics)
refsCount, err := c.Store.RefsCount()
if err != nil {
log.Error(err)
}
envsCount, err := c.Store.EnvironmentsCount()
if err != nil {
log.Error(err)
}
log.WithFields(
log.Fields{
"environments-count": envsCount,
"refs-count": refsCount,
},
).Info("scheduling metrics pull")
// ENVIRONMENTS
envs, err := c.Store.Environments()
if err != nil {
log.Error(err)
}
for _, env := range envs {
c.ScheduleTask(ctx, schemas.TaskTypePullEnvironmentMetrics, string(env.Key()), env)
}
// REFS
refs, err := c.Store.Refs()
if err != nil {
log.Error(err)
}
for _, ref := range refs {
c.ScheduleTask(ctx, schemas.TaskTypePullRefMetrics, string(ref.Key()), ref)
}
}
// TaskHandlerGarbageCollectProjects ..
func (c *Controller) TaskHandlerGarbageCollectProjects(ctx context.Context) error {
defer c.unqueueTask(schemas.TaskTypeGarbageCollectProjects, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypeGarbageCollectProjects)
return c.GarbageCollectProjects(ctx)
}
// TaskHandlerGarbageCollectEnvironments ..
func (c *Controller) TaskHandlerGarbageCollectEnvironments(ctx context.Context) error {
defer c.unqueueTask(schemas.TaskTypeGarbageCollectEnvironments, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypeGarbageCollectEnvironments)
return c.GarbageCollectEnvironments(ctx)
}
// TaskHandlerGarbageCollectRefs ..
func (c *Controller) TaskHandlerGarbageCollectRefs(ctx context.Context) error {
defer c.unqueueTask(schemas.TaskTypeGarbageCollectRefs, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypeGarbageCollectRefs)
return c.GarbageCollectRefs(ctx)
}
// TaskHandlerGarbageCollectMetrics ..
func (c *Controller) TaskHandlerGarbageCollectMetrics(ctx context.Context) error {
defer c.unqueueTask(schemas.TaskTypeGarbageCollectMetrics, "_")
defer c.TaskController.monitorLastTaskScheduling(schemas.TaskTypeGarbageCollectMetrics)
return c.GarbageCollectMetrics(ctx)
}
// Schedule ..
func (c *Controller) Schedule(ctx context.Context, pull config.Pull, gc config.GarbageCollect) {
for tt, cfg := range map[schemas.TaskType]config.SchedulerConfig{
schemas.TaskTypePullProjectsFromWildcards: config.SchedulerConfig(pull.ProjectsFromWildcards),
schemas.TaskTypePullEnvironmentsFromProjects: config.SchedulerConfig(pull.EnvironmentsFromProjects),
schemas.TaskTypePullRefsFromProjects: config.SchedulerConfig(pull.RefsFromProjects),
schemas.TaskTypePullMetrics: config.SchedulerConfig(pull.Metrics),
schemas.TaskTypeGarbageCollectProjects: config.SchedulerConfig(gc.Projects),
schemas.TaskTypeGarbageCollectEnvironments: config.SchedulerConfig(gc.Environments),
schemas.TaskTypeGarbageCollectRefs: config.SchedulerConfig(gc.Refs),
schemas.TaskTypeGarbageCollectMetrics: config.SchedulerConfig(gc.Metrics),
} {
if cfg.OnInit {
c.ScheduleTask(ctx, tt, "_")
}
if cfg.Scheduled {
c.ScheduleTaskWithTicker(ctx, tt, cfg.IntervalSeconds)
}
}
}
// ScheduleTask ..
func (c *Controller) ScheduleTask(ctx context.Context, tt schemas.TaskType, uniqueID string, args ...interface{}) {
logFields := log.Fields{
"task_type": tt,
"task_unique_id": uniqueID,
}
task := c.TaskController.TaskMap.Get(string(tt))
msg := task.WithArgs(ctx, args...)
qlen, err := c.TaskController.Queue.Len()
if err != nil {
log.WithFields(logFields).Warn("unable to read task queue length, skipping scheduling of task..")
return
}
if qlen >= c.TaskController.Queue.Options().BufferSize {
log.WithFields(logFields).Warn("queue buffer size exhausted, skipping scheduling of task..")
return
}
queued, err := c.Store.QueueTask(tt, uniqueID)
if err != nil {
log.WithFields(logFields).Warn("unable to declare the queueing, skipping scheduling of task..")
return
}
if !queued {
log.WithFields(logFields).Debug("task already queued, skipping scheduling of task..")
return
}
go func(msg *taskq.Message) {
if err := c.TaskController.Queue.Add(msg); err != nil {
log.WithError(err).Warning("scheduling task")
}
}(msg)
}
// ScheduleTaskWithTicker ..
func (c *Controller) ScheduleTaskWithTicker(ctx context.Context, tt schemas.TaskType, intervalSeconds int) {
if intervalSeconds <= 0 {
log.WithField("task", tt).Warn("task scheduling misconfigured, currently disabled")
return
}
log.WithFields(log.Fields{
"task": tt,
"interval_seconds": intervalSeconds,
}).Debug("task scheduled")
c.TaskController.monitorNextTaskScheduling(tt, intervalSeconds)
go func(ctx context.Context) {
ticker := time.NewTicker(time.Duration(intervalSeconds) * time.Second)
for {
select {
case <-ctx.Done():
log.WithField("task", tt).Info("scheduling of task stopped")
return
case <-ticker.C:
switch tt {
default:
c.ScheduleTask(ctx, tt, "_")
c.TaskController.monitorNextTaskScheduling(tt, intervalSeconds)
}
}
}
}(ctx)
}
func (tc *TaskController) monitorNextTaskScheduling(tt schemas.TaskType, duration int) {
if _, ok := tc.TaskSchedulingMonitoring[tt]; !ok {
tc.TaskSchedulingMonitoring[tt] = &monitor.TaskSchedulingStatus{}
}
tc.TaskSchedulingMonitoring[tt].Next = time.Now().Add(time.Duration(duration) * time.Second)
}
func (tc *TaskController) monitorLastTaskScheduling(tt schemas.TaskType) {
if _, ok := tc.TaskSchedulingMonitoring[tt]; !ok {
tc.TaskSchedulingMonitoring[tt] = &monitor.TaskSchedulingStatus{}
}
tc.TaskSchedulingMonitoring[tt].Last = time.Now()
}