(ctx context.Context, containerChan chan *ContainerConfig, containerDeleteChan chan *ContainerConfig, serviceChan chan *ContainerConfig, serviceDeleteChan chan *ContainerConfig)
| 418 | } |
| 419 | |
| 420 | func (d *Source) Watch(ctx context.Context, containerChan chan *ContainerConfig, containerDeleteChan chan *ContainerConfig, serviceChan chan *ContainerConfig, serviceDeleteChan chan *ContainerConfig) error { |
| 421 | err := d.checkContainers(ctx, containerChan, containerDeleteChan) |
| 422 | if err != nil { |
| 423 | return err |
| 424 | } |
| 425 | |
| 426 | if d.isSwarmManager { |
| 427 | err = d.checkServices(ctx, serviceChan, serviceDeleteChan) |
| 428 | if err != nil { |
| 429 | return err |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | sub, err := d.subscribeEvents(ctx) |
| 434 | if err != nil { |
| 435 | return err |
| 436 | } |
| 437 | |
| 438 | for { |
| 439 | select { |
| 440 | case <-d.t.Dying(): |
| 441 | d.logger.Infof("stopping container watcher") |
| 442 | return nil |
| 443 | |
| 444 | case event := <-sub.events: |
| 445 | d.logger.Tracef("Received event: %+v", event) |
| 446 | |
| 447 | if event.Type == dockerTypesEvents.ServiceEventType && (event.Action == dockerTypesEvents.ActionCreate || event.Action == dockerTypesEvents.ActionRemove) { |
| 448 | if err := d.checkServices(ctx, serviceChan, serviceDeleteChan); err != nil { |
| 449 | d.logger.Warnf("Failed to check services: %v", err) |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | if event.Type == dockerTypesEvents.ContainerEventType && (event.Action == dockerTypesEvents.ActionStart || event.Action == dockerTypesEvents.ActionDie) { |
| 454 | if err := d.checkContainers(ctx, containerChan, containerDeleteChan); err != nil { |
| 455 | d.logger.Warnf("Failed to check containers: %v", err) |
| 456 | } |
| 457 | } |
| 458 | case err := <-sub.errs: |
| 459 | if err == nil { |
| 460 | continue |
| 461 | } |
| 462 | |
| 463 | d.logger.Errorf("Docker events error: %v", err) |
| 464 | |
| 465 | // try to reconnect, replacing our channels on success. They are never nil if err is nil. |
| 466 | newSub, recErr := d.subscribeEvents(ctx) |
| 467 | if recErr != nil { |
| 468 | return recErr |
| 469 | } |
| 470 | |
| 471 | sub = newSub |
| 472 | |
| 473 | d.logger.Info("Successfully reconnected to Docker events") |
| 474 | |
| 475 | // We check containers after a reconnection because the docker daemon might have restarted |
| 476 | // and the container tombs may have self deleted |
| 477 | if err := d.checkContainers(ctx, containerChan, containerDeleteChan); err != nil { |
no test coverage detected