/*
* 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.context;
import java.io.File;
import java.io.IOException;
import java.util.Set;
import org.apache.hive.ptest.execution.Dirs;
import org.apache.hive.ptest.execution.conf.Context;
import org.apache.hive.ptest.execution.conf.Host;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Joiner;
import com.google.common.base.Preconditions;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
public class FixedExecutionContextProvider implements ExecutionContextProvider {
private static final Logger LOG = LoggerFactory
.getLogger(FixedExecutionContextProvider.class);
private final ExecutionContext mExecutionContext;
private final File mWorkingDir;
private FixedExecutionContextProvider(Set<Host> hosts, String workingDirectory, String privateKey)
throws IOException {
mWorkingDir = Dirs.create(new File(workingDirectory, "working"));
mExecutionContext = new ExecutionContext(this, hosts, mWorkingDir.getAbsolutePath(), privateKey);
}
@Override
public ExecutionContext createExecutionContext()
throws CreateHostsFailedException, ServiceNotAvailableException {
return mExecutionContext;
}
@Override
public void terminate(ExecutionContext executionContext) {
// do nothing
}
@Override
public void replaceBadHosts(ExecutionContext executionContext) throws CreateHostsFailedException {
if (!executionContext.getBadHosts().isEmpty()) {
LOG.warn(
"Found bad nodes on FixedExecutionContext. Cannot replace them. Degraded performance. badNodes={}",
executionContext.getBadHosts());
}
}
@Override
public void close(){
}
public static class Builder implements ExecutionContextProvider.Builder {
@Override
public ExecutionContextProvider build(Context context, String workingDirectory) throws Exception {
String privateKey = Preconditions.checkNotNull(context.getString(PRIVATE_KEY), PRIVATE_KEY + " is required");
Set<Host> hosts = Sets.newHashSet();
for(String alias : Splitter.on(" ").omitEmptyStrings().split(context.getString("hosts", ""))) {
Context hostContext = new Context(context.getSubProperties(
Joiner.on(".").join("host", alias, "")));
LOG.info("Processing host {}: {}", alias, hostContext.getParameters().toString());
hosts.add(new Host(hostContext.getString("host"), hostContext.getString("user"),
Iterables.toArray(Splitter.on(",").trimResults().split(hostContext.getString("localDirs")), String.class),
hostContext.getInteger("threads")));
}
Preconditions.checkState(hosts.size() > 0, "no hosts specified");
ExecutionContextProvider hostProvider = new FixedExecutionContextProvider(hosts, workingDirectory, privateKey);
return hostProvider;
}
}
}