/*
* Copyright 2014 the original author or 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.
*/
package org.springframework.yarn.client;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.springframework.yarn.YarnSystemException;
/**
* An implementation of {@link ApplicationYarnClient} verifying application
* install and submit statuses.
*
* @author Janne Valkealahti
*
*/
public class DefaultApplicationYarnClient extends CommandYarnClient implements ApplicationYarnClient {
/**
* Instantiates a new default application yarn client.
*
* @param clientRmOperations the client rm operations
*/
public DefaultApplicationYarnClient(ClientRmOperations clientRmOperations) {
super(clientRmOperations);
}
@Override
public void installApplication(ApplicationDescriptor descriptor) {
preInstallVerify(descriptor);
installApplication();
postInstallVerify(descriptor);
}
@Override
public ApplicationId submitApplication(ApplicationDescriptor descriptor) {
preSubmitVerify(descriptor);
ApplicationId applicationId = submitApplication(false);
postSubmitVerify(applicationId, descriptor);
return applicationId;
}
/**
* Pre install verify.
*
* @param descriptor the application descriptor
*/
protected void preInstallVerify(ApplicationDescriptor descriptor) {
try {
Path path = new Path(descriptor.getDirectory());
FileSystem fs = path.getFileSystem(getConfiguration());
if (fs.exists(path)) {
throw new IllegalArgumentException("Application directory " + descriptor.getDirectory() + " already exists");
}
} catch (Exception e) {
throw new YarnSystemException("Error", e);
}
}
/**
* Post install verify.
*
* @param descriptor the application descriptor
*/
protected void postInstallVerify(ApplicationDescriptor descriptor) {
}
/**
* Pre submit verify.
*
* @param descriptor the application descriptor
*/
protected void preSubmitVerify(ApplicationDescriptor descriptor) {
try {
Path path = new Path(descriptor.getDirectory());
FileSystem fs = path.getFileSystem(getConfiguration());
if (!fs.exists(path)) {
throw new IllegalArgumentException("Application directory " + descriptor.getDirectory() + " doesn't exist");
}
} catch (Exception e) {
throw new YarnSystemException("Error", e);
}
}
/**
* Post submit verify.
*
* @param applicationId the application id
* @param descriptor the application descriptor
*/
protected void postSubmitVerify(ApplicationId applicationId, ApplicationDescriptor descriptor) {
}
}