/
sync_peers.go
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/
sync_peers.go
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/*
* Copyright 2023 The Dragonfly Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//go:generate mockgen -destination mocks/sync_peers_mock.go -source sync_peers.go -package mocks
package job
import (
"context"
"fmt"
"time"
machineryv1tasks "github.com/RichardKnop/machinery/v1/tasks"
"github.com/google/uuid"
"go.opentelemetry.io/otel/trace"
"gorm.io/gorm"
logger "d7y.io/dragonfly/v2/internal/dflog"
internaljob "d7y.io/dragonfly/v2/internal/job"
"d7y.io/dragonfly/v2/manager/config"
"d7y.io/dragonfly/v2/manager/models"
"d7y.io/dragonfly/v2/pkg/idgen"
"d7y.io/dragonfly/v2/scheduler/resource"
)
// SyncPeers is an interface for sync peers.
type SyncPeers interface {
// Run sync peers.
Run(context.Context) error
// Serve started sync peers server.
Serve()
// Stop sync peers server.
Stop()
}
// syncPeers is an implementation of SyncPeers.
type syncPeers struct {
config *config.Config
job *internaljob.Job
db *gorm.DB
done chan struct{}
}
// newSyncPeers returns a new SyncPeers.
func newSyncPeers(cfg *config.Config, job *internaljob.Job, gdb *gorm.DB) (SyncPeers, error) {
return &syncPeers{
config: cfg,
db: gdb,
job: job,
done: make(chan struct{}),
}, nil
}
// Run sync peers.
func (s *syncPeers) Run(ctx context.Context) error {
// Find all of the scheduler clusters that has active schedulers.
var candidateSchedulerClusters []models.SchedulerCluster
if err := s.db.WithContext(ctx).Find(&candidateSchedulerClusters).Error; err != nil {
return err
}
// Find all of the schedulers that has active scheduler cluster.
var candidateSchedulers []models.Scheduler
for _, candidateSchedulerCluster := range candidateSchedulerClusters {
var scheduler models.Scheduler
if err := s.db.WithContext(ctx).Preload("SchedulerCluster").First(&scheduler, models.Scheduler{
SchedulerClusterID: candidateSchedulerCluster.ID,
State: models.SchedulerStateActive,
}).Error; err != nil {
continue
}
logger.Infof("sync peers find candidate scheduler cluster %s", candidateSchedulerCluster.Name)
candidateSchedulers = append(candidateSchedulers, scheduler)
}
logger.Infof("sync peers find candidate schedulers count is %d", len(candidateSchedulers))
// Send sync peer requests to all available schedulers,
// and merge the sync peer results with the data in
// the peer table in the database.
for _, scheduler := range candidateSchedulers {
log := logger.WithScheduler(scheduler.Hostname, scheduler.IP, uint64(scheduler.SchedulerClusterID))
// Send sync peer request to scheduler.
results, err := s.createSyncPeers(ctx, scheduler)
if err != nil {
log.Error(err)
continue
}
log.Infof("sync peers count is %d", len(results))
// Merge sync peer results with the data in the peer table.
s.mergePeers(ctx, scheduler, results, log)
}
return nil
}
// Serve started sync peers server.
func (s *syncPeers) Serve() {
tick := time.NewTicker(s.config.Job.SyncPeers.Interval)
for {
select {
case <-tick.C:
if err := s.Run(context.Background()); err != nil {
logger.Errorf("sync peers failed: %v", err)
}
case <-s.done:
return
}
}
}
// Stop sync peers server.
func (s *syncPeers) Stop() {
close(s.done)
}
// createSyncPeers creates sync peers.
func (s *syncPeers) createSyncPeers(ctx context.Context, scheduler models.Scheduler) ([]*resource.Host, error) {
var span trace.Span
ctx, span = tracer.Start(ctx, config.SpanSyncPeers, trace.WithSpanKind(trace.SpanKindProducer))
defer span.End()
// Initialize queue.
queue, err := getSchedulerQueue(scheduler)
if err != nil {
return nil, err
}
// Initialize task signature.
task := &machineryv1tasks.Signature{
UUID: fmt.Sprintf("task_%s", uuid.New().String()),
Name: internaljob.SyncPeersJob,
RoutingKey: queue.String(),
}
// Send sync peer task to worker.
logger.Infof("create sync peers in queue %v, task: %#v", queue, task)
asyncResult, err := s.job.Server.SendTaskWithContext(ctx, task)
if err != nil {
logger.Errorf("create sync peers in queue %v failed", queue, err)
return nil, err
}
// Get sync peer task result.
results, err := asyncResult.GetWithTimeout(s.config.Job.SyncPeers.Timeout, DefaultTaskPollingInterval)
if err != nil {
return nil, err
}
// Unmarshal sync peer task result.
var hosts []*resource.Host
if err := internaljob.UnmarshalResponse(results, &hosts); err != nil {
return nil, err
}
return hosts, nil
}
// Merge sync peer results with the data in the peer table.
func (s *syncPeers) mergePeers(ctx context.Context, scheduler models.Scheduler, results []*resource.Host, log *logger.SugaredLoggerOnWith) {
// Convert sync peer results from slice to map.
syncPeers := make(map[string]*resource.Host)
for _, result := range results {
syncPeers[result.ID] = result
}
rows, err := s.db.Model(&models.Peer{}).Find(&models.Peer{SchedulerClusterID: scheduler.SchedulerClusterID}).Rows()
if err != nil {
log.Error(err)
return
}
defer rows.Close()
for rows.Next() {
peer := models.Peer{}
if err := s.db.ScanRows(rows, &peer); err != nil {
log.Error(err)
continue
}
// If the peer exists in the sync peer results, update the peer data in the database with
// the sync peer results and delete the sync peer from the sync peers map.
id := idgen.HostIDV2(peer.IP, peer.Hostname)
if syncPeer, ok := syncPeers[id]; ok {
if err := s.db.WithContext(ctx).First(&models.Peer{}, peer.ID).Updates(models.Peer{
Type: syncPeer.Type.Name(),
IDC: syncPeer.Network.IDC,
Location: syncPeer.Network.Location,
Port: syncPeer.Port,
DownloadPort: syncPeer.DownloadPort,
ObjectStoragePort: syncPeer.ObjectStoragePort,
State: models.PeerStateActive,
OS: syncPeer.OS,
Platform: syncPeer.Platform,
PlatformFamily: syncPeer.PlatformFamily,
PlatformVersion: syncPeer.PlatformVersion,
KernelVersion: syncPeer.KernelVersion,
GitVersion: syncPeer.Build.GitVersion,
GitCommit: syncPeer.Build.GitCommit,
BuildPlatform: syncPeer.Build.Platform,
}).Error; err != nil {
log.Error(err)
}
// Delete the sync peer from the sync peers map.
delete(syncPeers, id)
} else {
// If the peer does not exist in the sync peer results, delete the peer in the database.
if err := s.db.WithContext(ctx).Unscoped().Delete(&models.Peer{}, peer.ID).Error; err != nil {
log.Error(err)
}
}
}
// Insert the sync peers that do not exist in the database into the peer table.
for _, syncPeer := range syncPeers {
if err := s.db.WithContext(ctx).Create(&models.Peer{
Hostname: syncPeer.Hostname,
Type: syncPeer.Type.Name(),
IDC: syncPeer.Network.IDC,
Location: syncPeer.Network.Location,
IP: syncPeer.IP,
Port: syncPeer.Port,
DownloadPort: syncPeer.DownloadPort,
ObjectStoragePort: syncPeer.ObjectStoragePort,
State: models.PeerStateActive,
OS: syncPeer.OS,
Platform: syncPeer.Platform,
PlatformFamily: syncPeer.PlatformFamily,
PlatformVersion: syncPeer.PlatformVersion,
KernelVersion: syncPeer.KernelVersion,
GitVersion: syncPeer.Build.GitVersion,
GitCommit: syncPeer.Build.GitCommit,
BuildPlatform: syncPeer.Build.Platform,
SchedulerClusterID: uint(syncPeer.SchedulerClusterID),
}).Error; err != nil {
log.Error(err)
}
}
}