/*
* Copyright (C) 2012-2015 DataStax 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 com.datastax.driver.stress;
import com.datastax.driver.core.Session;
import com.datastax.driver.core.exceptions.DriverException;
import com.google.common.util.concurrent.Uninterruptibles;
public class BlockingConsumer implements Consumer {
private final Runner runner = new Runner();
private final Session session;
private final QueryGenerator requests;
private final Reporter reporter;
public BlockingConsumer(Session session,
QueryGenerator requests,
Reporter reporter) {
this.session = session;
this.requests = requests;
this.reporter = reporter;
this.runner.setDaemon(true);
}
@Override
public void start() {
this.runner.start();
}
@Override
public void join() {
Uninterruptibles.joinUninterruptibly(this.runner);
}
private class Runner extends Thread {
public Runner() {
super("Consumer Threads");
}
@Override
public void run() {
try {
while (requests.hasNext())
handle(requests.next());
} catch (DriverException e) {
System.err.println("Error during query: " + e.getMessage());
}
}
protected void handle(QueryGenerator.Request request) {
Reporter.Context ctx = reporter.newRequest();
try {
request.execute(session);
} finally {
ctx.done();
}
}
}
}