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Updated the LRO interface to update resources instead
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| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * 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; | ||
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|
||
| import com.google.common.util.concurrent.ListenableFuture; | ||
| import com.google.common.util.concurrent.Service; | ||
| import com.google.common.util.concurrent.SettableFuture; | ||
| import io.cdap.cdap.proto.id.OperationRunId; | ||
| import io.cdap.cdap.proto.operation.OperationError; | ||
| import io.cdap.cdap.proto.operation.OperationRunStatus; | ||
| import java.util.Collections; | ||
| import java.util.concurrent.atomic.AtomicReference; | ||
| import java.util.concurrent.locks.Lock; | ||
| import java.util.concurrent.locks.ReentrantLock; | ||
| import org.apache.twill.common.Threads; | ||
| import org.apache.twill.internal.ServiceListenerAdapter; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| public class InMemoryOperationController implements | ||
| OperationController { | ||
|
|
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| private final OperationRunId runId; | ||
| private final OperationStatePublisher statePublisher; | ||
| private final OperationDriver driver; | ||
| private final SettableFuture<OperationController> completionFuture = SettableFuture.create(); | ||
| private final Lock lock = new ReentrantLock(); | ||
| private final AtomicReference<OperationRunStatus> status = new AtomicReference<>(); | ||
|
|
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| private static final Logger LOG = LoggerFactory.getLogger(InMemoryOperationController.class); | ||
|
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| InMemoryOperationController(OperationRunId runId, OperationStatePublisher statePublisher, | ||
| OperationDriver driver) { | ||
| this.runId = runId; | ||
| this.driver = driver; | ||
| this.statePublisher = statePublisher; | ||
| this.status.set(OperationRunStatus.PENDING); | ||
| startListen(driver); | ||
| } | ||
|
|
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|
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| @Override | ||
| public void stop() { | ||
| //TODO(samik) verify state before calling stop | ||
| lock.lock(); | ||
| try { | ||
| this.status.set(OperationRunStatus.STOPPING); | ||
| driver.stopAndWait(); | ||
| complete(); | ||
| } catch (Exception e) { | ||
| LOG.warn("Exception when stopping operation {}", runId, e); | ||
| } finally { | ||
| lock.unlock(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public ListenableFuture<OperationController> completionFuture() { | ||
| return completionFuture; | ||
| } | ||
|
|
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| private void startListen(Service service) { | ||
| service.addListener(new ServiceListenerAdapter() { | ||
| @Override | ||
| public void running() { | ||
| status.set(OperationRunStatus.RUNNING); | ||
| statePublisher.publishRunning(runId); | ||
| } | ||
|
|
||
| @Override | ||
| public void terminated(Service.State from) { | ||
| if (status.get().equals(OperationRunStatus.STOPPING)) { | ||
| status.set(OperationRunStatus.KILLED); | ||
| } else { | ||
| status.set(OperationRunStatus.SUCCEEDED); | ||
| statePublisher.publishSuccess(runId); | ||
| } | ||
| complete(); | ||
| } | ||
|
|
||
| @Override | ||
| public void failed(Service.State from, Throwable failure) { | ||
| status.set(OperationRunStatus.FAILED); | ||
| if (failure instanceof OperationException) { | ||
| statePublisher.publishFailed(runId, ((OperationException) failure).toOperationError()); | ||
| } else { | ||
| statePublisher.publishFailed(runId, getOperationErrorFromThrowable(failure)); | ||
| } | ||
| complete(); | ||
| } | ||
| }, Threads.SAME_THREAD_EXECUTOR); | ||
| } | ||
|
|
||
| private void complete() { | ||
| completionFuture.set(this); | ||
| } | ||
|
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| private OperationError getOperationErrorFromThrowable(Throwable t) { | ||
| LOG.debug("Operation {} of namespace {} failed", runId.getRun(), runId.getParent(), t); | ||
| return new OperationError(t.getMessage(), Collections.emptyList()); | ||
| } | ||
| } | ||
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