package com.sequenceiq.cloudbreak.cloud.handler;
import java.util.List;
import javax.inject.Inject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import com.sequenceiq.cloudbreak.cloud.CloudConnector;
import com.sequenceiq.cloudbreak.cloud.context.AuthenticatedContext;
import com.sequenceiq.cloudbreak.cloud.event.resource.TerminateStackRequest;
import com.sequenceiq.cloudbreak.cloud.event.resource.TerminateStackResult;
import com.sequenceiq.cloudbreak.cloud.exception.CloudConnectorException;
import com.sequenceiq.cloudbreak.cloud.init.CloudPlatformConnectors;
import com.sequenceiq.cloudbreak.cloud.model.CloudCredentialStatus;
import com.sequenceiq.cloudbreak.cloud.model.CloudResource;
import com.sequenceiq.cloudbreak.cloud.model.CloudResourceStatus;
import com.sequenceiq.cloudbreak.cloud.model.CredentialStatus;
import com.sequenceiq.cloudbreak.cloud.model.ResourceStatus;
import com.sequenceiq.cloudbreak.cloud.scheduler.SyncPollingScheduler;
import com.sequenceiq.cloudbreak.cloud.task.PollTask;
import com.sequenceiq.cloudbreak.cloud.task.PollTaskFactory;
import com.sequenceiq.cloudbreak.cloud.task.ResourcesStatePollerResult;
import com.sequenceiq.cloudbreak.cloud.transform.ResourceLists;
import com.sequenceiq.cloudbreak.cloud.transform.ResourcesStatePollerResults;
import reactor.bus.Event;
import reactor.bus.EventBus;
@Component
public class TerminateStackHandler implements CloudPlatformEventHandler<TerminateStackRequest> {
private static final Logger LOGGER = LoggerFactory.getLogger(TerminateStackHandler.class);
@Inject
private CloudPlatformConnectors cloudPlatformConnectors;
@Inject
private PollTaskFactory statusCheckFactory;
@Inject
private SyncPollingScheduler<ResourcesStatePollerResult> syncPollingScheduler;
@Inject
private EventBus eventBus;
@Override
public Class<TerminateStackRequest> type() {
return TerminateStackRequest.class;
}
@Override
public void accept(Event<TerminateStackRequest> terminateStackRequestEvent) {
LOGGER.info("Received event: {}", terminateStackRequestEvent);
TerminateStackRequest request = terminateStackRequestEvent.getData();
try {
CloudConnector connector = cloudPlatformConnectors.get(request.getCloudContext().getPlatformVariant());
AuthenticatedContext ac = connector.authentication().authenticate(request.getCloudContext(), request.getCloudCredential());
List<CloudResourceStatus> resourceStatus = connector.resources().terminate(ac, request.getCloudStack(), request.getCloudResources());
List<CloudResource> resources = ResourceLists.transform(resourceStatus);
TerminateStackResult result;
if (!resources.isEmpty()) {
PollTask<ResourcesStatePollerResult> task = statusCheckFactory.newPollResourcesStateTask(ac, resources, false);
ResourcesStatePollerResult statePollerResult = ResourcesStatePollerResults.build(request.getCloudContext(), resourceStatus);
if (!task.completed(statePollerResult)) {
statePollerResult = syncPollingScheduler.schedule(task);
}
if (!statePollerResult.getStatus().equals(ResourceStatus.DELETED)) {
throw new CloudConnectorException("Stack could not be terminated, Resource(s) could not be deleted on the provider side.");
} else {
result = new TerminateStackResult(request);
}
} else {
result = new TerminateStackResult(request);
}
CloudCredentialStatus credentialStatus = connector.credentials().delete(ac);
if (CredentialStatus.FAILED == credentialStatus.getStatus()) {
if (credentialStatus.getException() != null) {
throw new CloudConnectorException(credentialStatus.getException());
}
throw new CloudConnectorException(credentialStatus.getStatusReason());
}
request.getResult().onNext(result);
LOGGER.info("TerminateStackHandler finished");
eventBus.notify(result.selector(), new Event(terminateStackRequestEvent.getHeaders(), result));
} catch (Exception e) {
LOGGER.error("Failed to handle TerminateStackRequest: {}", e);
TerminateStackResult terminateStackResult = new TerminateStackResult("Stack termination failed.", e, request);
request.getResult().onNext(terminateStackResult);
eventBus.notify(terminateStackResult.selector(), new Event(terminateStackRequestEvent.getHeaders(), terminateStackResult));
}
}
}