/**
* 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.whirr.service.elasticsearch.integration;
import static org.apache.whirr.RolePredicates.role;
import com.google.common.collect.Iterables;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.whirr.Cluster;
import org.apache.whirr.ClusterController;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.service.elasticsearch.ElasticSearchHandler;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ElasticSearchTest {
private static final Logger LOG =
LoggerFactory.getLogger(ElasticSearchHandler.class);
private ClusterSpec clusterSpec;
private ClusterController controller;
private Cluster cluster;
@Before
public void setUp() throws Exception {
CompositeConfiguration config = new CompositeConfiguration();
config.addConfiguration(new PropertiesConfiguration("whirr-elasticsearch-test.properties"));
if (System.getProperty("config") != null) {
config.addConfiguration(new PropertiesConfiguration(System.getProperty("config")));
}
clusterSpec = ClusterSpec.withTemporaryKeys(config);
controller = new ClusterController();
cluster = controller.launchCluster(clusterSpec);
}
@Test
public void testCheckNumberOfNodes() throws Exception {
for(int i = 0; i<20; i++) {
int nodes = getNumberOfNodes();
LOG.info("{}/{} nodes joined the elasticsearch cluster",
nodes, cluster.getInstances().size());
if (nodes == cluster.getInstances().size()) {
return;
}
try {
Thread.sleep(5000);
} catch (InterruptedException e) {}
}
throw new Exception("All nodes did not joined the cluster as expected");
}
private int getNumberOfNodes() throws Exception {
String healthInfo = getHealthInfo();
Pattern nodesPattern = Pattern.compile("\".*number_of_nodes\":(\\d+).*");
Matcher matcher = nodesPattern.matcher(healthInfo);
if (matcher.find()) {
return Integer.parseInt(matcher.group(1));
}
return 0;
}
private String getHealthInfo() throws Exception {
for(int i=0; i<20; i++) {
try {
Cluster.Instance instance = Iterables.get(
cluster.getInstancesMatching(role(ElasticSearchHandler.ROLE)), 0);
String address = instance.getPublicAddress().getHostAddress();
URL url = new URL(String.format("http://%s:9200/_cluster/health", address));
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
StringBuilder builder = new StringBuilder();
String line;
while((line = in.readLine()) != null) {
builder.append(line);
}
in.close();
return builder.toString();
} catch(IOException e) {
try {
Thread.sleep(5000);
} catch (InterruptedException e1) {}
}
}
throw new Exception("Unable to get cluster health info.");
}
@After
public void tearDown() throws IOException, InterruptedException {
controller.destroyCluster(clusterSpec);
}
}