/**
* 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.integration;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.lang.RandomStringUtils;
import org.apache.whirr.Cluster;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.service.BlobClusterStateStore;
import org.apache.whirr.service.BlobStoreContextBuilder;
import org.jclouds.blobstore.BlobStoreContext;
import org.jclouds.domain.Credentials;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Set;
import static com.google.common.base.Preconditions.checkArgument;
import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertNull;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
public class BlobClusterStateStoreTest {
private static final Logger LOG = LoggerFactory
.getLogger(BlobClusterStateStoreTest.class);
private Configuration getTestConfiguration() throws ConfigurationException {
return new PropertiesConfiguration("whirr-core-test.properties");
}
private ClusterSpec getTestClusterSpec() throws Exception {
return ClusterSpec.withTemporaryKeys(getTestConfiguration());
}
@Test
public void testStoreAndLoadState() throws Exception {
ClusterSpec spec = getTestClusterSpec();
BlobStoreContext context = BlobStoreContextBuilder.build(spec);
String container = generateRandomContainerName(context);
try {
spec.setStateStore("blob");
spec.setStateStoreContainer(container);
Cluster expected = createTestCluster(new String[]{"region/id1", "region/id2"},
new String[]{"role1", "role2"});
BlobClusterStateStore store = new BlobClusterStateStore(spec);
store.save(expected);
/* load and check the stored state */
Cluster stored = store.load();
Cluster.Instance first = Iterables.getFirst(stored.getInstances(), null);
assertNotNull(first);
assertThat(first.getId(), is("region/id1"));
assertThat(first.getRoles().contains("role1"), is(true));
assertThat(stored.getInstances().size(), is(2));
/* destroy stored state and check it no longer exists */
store.destroy();
expected = store.load();
assertNull(expected);
} finally {
LOG.info("Removing temporary container '{}'", container);
context.getBlobStore().deleteContainer(container);
}
}
@Test(expected = IllegalArgumentException.class)
public void testInvalidContainerName() throws Exception {
ClusterSpec spec = getTestClusterSpec();
/* underscores are not allowed and it should throw exception */
spec.setStateStoreContainer("whirr_test");
}
private String generateRandomContainerName(BlobStoreContext context) {
String candidate;
do {
candidate = RandomStringUtils.randomAlphanumeric(12).toLowerCase();
} while(!context.getBlobStore().createContainerInLocation(null, candidate));
LOG.info("Created temporary container '{}'", candidate);
return candidate;
}
private Cluster createTestCluster(String[] ids, String[] roles) {
checkArgument(ids.length == roles.length, "each ID should have a role");
Credentials credentials = new Credentials("dummy", "dummy");
Set<Cluster.Instance> instances = Sets.newLinkedHashSet();
for(int i = 0; i < ids.length; i++) {
String ip = "127.0.0." + (i + 1);
instances.add(new Cluster.Instance(credentials,
Sets.newHashSet(roles[i]), ip, ip, ids[i], null));
}
return new Cluster(instances);
}
}