/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.hive.ptest.execution;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.apache.hive.ptest.execution.LocalCommand.CollectLogPolicy;
import org.apache.hive.ptest.execution.ssh.NonZeroExitCodeException;
import org.apache.hive.ptest.execution.ssh.RemoteCommandResult;
import org.apache.hive.ptest.execution.ssh.SSHExecutionException;
import org.apache.hive.ptest.execution.ssh.SSHResult;
import org.slf4j.Logger;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
public abstract class Phase {
protected final List<HostExecutor> hostExecutors;
private final LocalCommandFactory localCommandFactory;
private final ImmutableMap<String, String> templateDefaults;
protected final Logger logger;
public Phase(List<HostExecutor> hostExecutors,
LocalCommandFactory localCommandFactory,
ImmutableMap<String, String> templateDefaults, Logger logger) {
super();
this.hostExecutors = hostExecutors;
this.localCommandFactory = localCommandFactory;
this.templateDefaults = templateDefaults;
this.logger = logger;
}
public abstract void execute() throws Throwable;
// clean prep
protected void execLocally(String command)
throws IOException, InterruptedException, NonZeroExitCodeException {
CollectLogPolicy localCollector = new CollectLogPolicy(logger);
command = Templates.getTemplateResult(command, templateDefaults);
LocalCommand localCmd = localCommandFactory.create(localCollector, command);
if(localCmd.getExitCode() != 0) {
throw new NonZeroExitCodeException(String.format(
"Command '%s' failed with exit status %d and output '%s'",
command, localCmd.getExitCode(), localCollector.getOutput()));
}
}
// prep
protected List<RemoteCommandResult> rsyncFromLocalToRemoteInstances(String localFile, String remoteFile)
throws Exception {
List<ListenableFuture<List<ListenableFuture<RemoteCommandResult>>>> futures = Lists.newArrayList();
for(HostExecutor hostExecutor : hostExecutors) {
futures.add(hostExecutor.rsyncFromLocalToRemoteInstances(localFile, remoteFile));
}
return flatten(futures);
}
// clean
protected List<SSHResult> execHosts(String command)
throws Exception {
List<ListenableFuture<SSHResult>> futures = Lists.newArrayList();
for(HostExecutor hostExecutor : hostExecutors) {
futures.add(hostExecutor.exec(command));
}
return toListOfResults(futures);
}
protected List<SSHResult> execHostsIgnoreErrors(String command)
throws Exception {
List<ListenableFuture<SSHResult>> futures = Lists.newArrayList();
for(HostExecutor hostExecutor : hostExecutors) {
futures.add(hostExecutor.execIgnoreAllErrors(command));
}
return toListOfResults(futures, false);
}
// clean prep
protected List<RemoteCommandResult> execInstances(String command)
throws Exception {
List<ListenableFuture<RemoteCommandResult>> futures = Lists.newArrayList();
for(HostExecutor hostExecutor : hostExecutors) {
futures.addAll(hostExecutor.execInstances(command));
}
return toListOfResults(futures);
}
protected List<RemoteCommandResult> initalizeHosts()
throws Exception {
List<ListenableFuture<List<RemoteCommandResult>>> futures = Lists.newArrayList();
ListeningExecutorService executor = MoreExecutors.
listeningDecorator(Executors.newFixedThreadPool(hostExecutors.size()));
try {
for(final HostExecutor hostExecutor : hostExecutors) {
futures.add(executor.submit(new Callable<List<RemoteCommandResult>>() {
@Override
public List<RemoteCommandResult> call() throws Exception {
return initalizeHost(hostExecutor);
}
}));
}
List<RemoteCommandResult> results = Lists.newArrayList();
for(ListenableFuture<List<RemoteCommandResult>> future : futures) {
List<RemoteCommandResult> result = future.get();
if(result != null) {
results.addAll(result);
}
}
executor.shutdown();
return results;
} finally {
if(executor.isShutdown()) {
executor.shutdownNow();
}
}
}
protected List<RemoteCommandResult> initalizeHost(HostExecutor hostExecutor)
throws Exception {
List<RemoteCommandResult> results = Lists.newArrayList();
results.add(hostExecutor.exec("killall -q -9 java || true").get());
TimeUnit.SECONDS.sleep(1);
// order matters in all of these so block
results.addAll(toListOfResults(hostExecutor.execInstances("rm -rf $localDir/$instanceName/scratch $localDir/$instanceName/logs")));
results.addAll(toListOfResults(hostExecutor.execInstances("mkdir -p $localDir/$instanceName/logs " +
"$localDir/$instanceName/maven " +
"$localDir/$instanceName/scratch " +
"$localDir/$instanceName/ivy " +
"$localDir/$instanceName/${repositoryName}-source")));
// order does not matter below, so go wide
List<ListenableFuture<List<ListenableFuture<RemoteCommandResult>>>> futures = Lists.newArrayList();
futures.add(hostExecutor.rsyncFromLocalToRemoteInstances("$workingDir/${repositoryName}-source", "$localDir/$instanceName/"));
futures.add(hostExecutor.rsyncFromLocalToRemoteInstances("$workingDir/maven", "$localDir/$instanceName/"));
futures.add(hostExecutor.rsyncFromLocalToRemoteInstances("$workingDir/ivy", "$localDir/$instanceName/"));
results.addAll(flatten(futures));
return results;
}
private <T extends RemoteCommandResult> List<T> flatten(List<ListenableFuture<List<ListenableFuture<T>>>> futures)
throws Exception {
List<T> results = Lists.newArrayList();
for(ListenableFuture<List<ListenableFuture<T>>> future : futures) {
List<ListenableFuture<T>> result = future.get();
if(result != null) {
results.addAll(toListOfResults(result));
}
}
return results;
}
private <T extends RemoteCommandResult> List<T> toListOfResults(List<ListenableFuture<T>> futures)
throws Exception {
return toListOfResults(futures, true);
}
private <T extends RemoteCommandResult> List<T> toListOfResults(List<ListenableFuture<T>> futures,
boolean reportErrors)
throws Exception {
List<T> results = Lists.newArrayList();
for(T result : Futures.allAsList(futures).get()) {
if(result != null) {
if(reportErrors && (result.getException() != null || result.getExitCode() != 0)) {
throw new SSHExecutionException(result);
}
results.add(result);
}
}
return results;
}
protected ImmutableMap<String, String> getTemplateDefaults() {
return templateDefaults;
}
}