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...va/io/cdap/cdap/internal/operation/OperationNotificationSingleTopicSubscriberService.java
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| /* | ||
| * Copyright © 2023 Cask Data, Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| package io.cdap.cdap.internal.operation; | ||
|
|
||
| import com.google.common.annotations.VisibleForTesting; | ||
| import com.google.gson.Gson; | ||
| import com.google.gson.GsonBuilder; | ||
| import com.google.gson.JsonSyntaxException; | ||
| import io.cdap.cdap.api.common.Bytes; | ||
| import io.cdap.cdap.api.metrics.MetricsCollectionService; | ||
| import io.cdap.cdap.common.conf.CConfiguration; | ||
| import io.cdap.cdap.common.conf.Constants; | ||
| import io.cdap.cdap.common.utils.ImmutablePair; | ||
| import io.cdap.cdap.internal.app.ApplicationSpecificationAdapter; | ||
| import io.cdap.cdap.internal.app.services.AbstractNotificationSubscriberService; | ||
| import io.cdap.cdap.internal.app.store.AppMetadataStore; | ||
| import io.cdap.cdap.messaging.spi.MessagingService; | ||
| import io.cdap.cdap.proto.Notification; | ||
| import io.cdap.cdap.proto.id.OperationRunId; | ||
| import io.cdap.cdap.proto.operation.OperationError; | ||
| import io.cdap.cdap.proto.operation.OperationRunStatus; | ||
| import io.cdap.cdap.security.spi.authentication.SecurityRequestContext; | ||
| import io.cdap.cdap.spi.data.StructuredTableContext; | ||
| import io.cdap.cdap.spi.data.TableNotFoundException; | ||
| import io.cdap.cdap.spi.data.transaction.TransactionRunner; | ||
| import java.io.IOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.Collections; | ||
| import java.util.Iterator; | ||
| import javax.annotation.Nullable; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| /** | ||
| * Service that receives program status notifications from a single topic and persists to the store. | ||
| * No transactions should be started in any of the overrided methods since they are already wrapped | ||
| * in a transaction. | ||
| */ | ||
| class OperationNotificationSingleTopicSubscriberService | ||
| extends AbstractNotificationSubscriberService { | ||
|
|
||
| private static final Logger LOG = | ||
| LoggerFactory.getLogger(OperationNotificationSubscriberService.class); | ||
|
|
||
| private static final Gson GSON = | ||
| ApplicationSpecificationAdapter.addTypeAdapters(new GsonBuilder()).create(); | ||
|
|
||
| private final OperationStatePublisher statePublisher; | ||
|
|
||
| private final OperationLifecycleService lifecycleService; | ||
|
|
||
| OperationNotificationSingleTopicSubscriberService( | ||
| MessagingService messagingService, | ||
| CConfiguration cConf, | ||
| MetricsCollectionService metricsCollectionService, | ||
| OperationStatePublisher statePublisher, | ||
| TransactionRunner transactionRunner, | ||
| String name, | ||
| String topicName, | ||
| OperationLifecycleService lifecycleService) { | ||
| super( | ||
| name, | ||
| cConf, | ||
| topicName, | ||
| cConf.getInt(Constants.Operation.STATUS_EVENT_FETCH_SIZE), | ||
| cConf.getLong(Constants.Operation.STATUS_EVENT_POLL_DELAY_MILLIS), | ||
| messagingService, | ||
| metricsCollectionService, | ||
| transactionRunner, | ||
| cConf.getInt(Constants.Operation.STATUS_EVENT_TX_SIZE)); | ||
| this.statePublisher = statePublisher; | ||
| this.lifecycleService = lifecycleService; | ||
| } | ||
|
|
||
| @Nullable | ||
| @Override | ||
| protected String loadMessageId(StructuredTableContext context) | ||
| throws IOException, TableNotFoundException { | ||
| return getAppMetadataStore(context).retrieveSubscriberState(getTopicId().getTopic(), | ||
| "operation.state.reader"); | ||
| } | ||
|
|
||
| @Override | ||
| protected void storeMessageId(StructuredTableContext context, String messageId) | ||
| throws IOException, TableNotFoundException { | ||
| getAppMetadataStore(context).persistSubscriberState(getTopicId().getTopic(), | ||
| "operation.state.reader", messageId); | ||
| } | ||
|
|
||
| @Override | ||
| protected void processMessages( | ||
| StructuredTableContext structuredTableContext, | ||
| Iterator<ImmutablePair<String, Notification>> messages) | ||
| throws Exception { | ||
| while (messages.hasNext()) { | ||
| ImmutablePair<String, Notification> messagePair = messages.next(); | ||
| processNotification( | ||
| messagePair.getFirst().getBytes(StandardCharsets.UTF_8), | ||
| messagePair.getSecond(), | ||
| structuredTableContext); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Process a {@link Notification} received from TMS. | ||
| * | ||
| * @param messageIdBytes the raw message id in the TMS for the notification | ||
| * @param notification the {@link Notification} to process | ||
| * @param context context to get the table for operations | ||
| * @throws Exception if failed to process the given notification | ||
| */ | ||
| @VisibleForTesting | ||
| void processNotification( | ||
| byte[] messageIdBytes, | ||
| Notification notification, | ||
| StructuredTableContext context) | ||
| throws Exception { | ||
| OperationRunStore runStore = new OperationRunStore(context); | ||
| try { | ||
| OperationNotification operationNotification = OperationNotification.fromNotification( | ||
| notification); | ||
| handleOperationEvent(operationNotification, messageIdBytes, runStore); | ||
| } catch (IllegalArgumentException | JsonSyntaxException e) { | ||
| LOG.warn("Got invalid operation notification", e); | ||
| } | ||
| } | ||
|
|
||
| private void handleOperationEvent( | ||
| OperationNotification notification, | ||
| byte[] messageIdBytes, | ||
| OperationRunStore runStore | ||
| ) throws Exception { | ||
| LOG.debug("Processing operation status notification: {}", notification); | ||
| OperationRunId runId = notification.getRunId(); | ||
| OperationRunDetail runDetail; | ||
| try { | ||
| runDetail = runStore.getOperation(runId); | ||
| if (!runDetail.getRun().getStatus().canTransitionTo(notification.getStatus())) { | ||
| LOG.debug( | ||
| "Ignoring unexpected request to transition operation {} from {} state to " | ||
| + "{} state.", | ||
| runId, runDetail.getRun().getStatus(), notification.getStatus()); | ||
| return; | ||
| } | ||
|
|
||
| byte[] existingSourceId = runDetail.getSourceId(); | ||
| if (existingSourceId != null && Bytes.compareTo(messageIdBytes, existingSourceId) < 0) { | ||
| LOG.debug( | ||
| "Notification source id '{}' is not larger than the existing source id '{}' in the existing " | ||
| + "operation run detail.", | ||
| Bytes.toHexString(runDetail.getSourceId()), Bytes.toHexString(existingSourceId)); | ||
| return; | ||
| } | ||
| } catch (OperationRunNotFoundException e) { | ||
| LOG.debug(String.format("Ignoring message for non existent operation %s", runId)); | ||
| return; | ||
| } | ||
|
|
||
| switch (notification.getStatus()) { | ||
| case STARTING: | ||
| String oldUser = SecurityRequestContext.getUserId(); | ||
| try { | ||
| if (runDetail.getPrincipal() != null) { | ||
| SecurityRequestContext.setUserId(runDetail.getPrincipal()); | ||
| } | ||
| lifecycleService.startOperation(runDetail); | ||
| } catch (Exception e) { | ||
| LOG.error("Failed to start operation {}", runDetail, e); | ||
| statePublisher.publishFailed(runId, | ||
| new OperationError(e.getMessage(), Collections.emptyList())); | ||
| } finally { | ||
| SecurityRequestContext.setUserId(oldUser); | ||
| } | ||
| runStore.updateOperationStatus(runId, OperationRunStatus.STARTING, messageIdBytes); | ||
| break; | ||
| case RUNNING: | ||
| case SUCCEEDED: | ||
| runStore.updateOperationStatus(runId, notification.getStatus(), messageIdBytes); | ||
| if (notification.getResources() != null) { | ||
| runStore.updateOperationResources(runId, notification.getResources(), messageIdBytes); | ||
| } | ||
| break; | ||
| case STOPPING: | ||
| try { | ||
| lifecycleService.stopOperation(runDetail); | ||
| } catch (IllegalStateException e) { | ||
| LOG.warn("Failed to stop operation {}", runDetail.getRunId(), e); | ||
| } | ||
| runStore.updateOperationStatus(runId, OperationRunStatus.STOPPING, messageIdBytes); | ||
| break; | ||
| case KILLED: | ||
| runStore.updateOperationStatus(runId, OperationRunStatus.KILLED, messageIdBytes); | ||
| break; | ||
| case FAILED: | ||
| runStore.failOperationRun(runId, notification.getError(), notification.getEndTime(), | ||
| messageIdBytes); | ||
| break; | ||
| default: | ||
| // This should not happen | ||
| LOG.error( | ||
| "Unsupported status {} for operation {}, {}", | ||
| notification.getStatus(), | ||
| runId, | ||
| notification); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Returns an instance of {@link AppMetadataStore}. | ||
| */ | ||
| private AppMetadataStore getAppMetadataStore(StructuredTableContext context) { | ||
| return AppMetadataStore.create(context); | ||
| } | ||
| } |
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