/**
* Copyright 2011 the original author or authors.
*
* 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 net.sf.katta.client;
import java.lang.reflect.InvocationTargetException;
import java.net.ConnectException;
import net.sf.katta.AbstractTest;
import net.sf.katta.lib.lucene.ILuceneServer;
import net.sf.katta.node.IContentServer;
import org.apache.hadoop.conf.Configuration;
import org.junit.Test;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Matchers.anyString;
import static org.fest.assertions.Assertions.assertThat;
public class NodeProxyManagerTest extends AbstractTest {
private INodeSelectionPolicy _nodeSelectionPolicy = mock(INodeSelectionPolicy.class);
private NodeProxyManager _proxyManager = new NodeProxyManager(ILuceneServer.class, new Configuration(),
_nodeSelectionPolicy);
@Test
public void testProxyFailure() throws Exception {
NodeProxyManager proxyManagerSpy = spy(_proxyManager);
IContentServer contentServer = mock(IContentServer.class);
doReturn(contentServer).when(proxyManagerSpy).createNodeProxy(anyString());
assertThat(proxyManagerSpy.getProxy("node1", true)).isNotNull();
assertThat(proxyManagerSpy.getProxy("node2", true)).isNotNull();
proxyManagerSpy.setSuccessiveProxyFailuresBeforeReestablishing(2);
// node1 failure
reportNodeFailure(proxyManagerSpy, "node1");
verifyNoMoreInteractions(_nodeSelectionPolicy);
assertThat(proxyManagerSpy.getProxy("node1", false)).isNotNull();
assertThat(proxyManagerSpy.getProxy("node2", false)).isNotNull();
// node2 failure
reportNodeFailure(proxyManagerSpy, "node2");
verifyNoMoreInteractions(_nodeSelectionPolicy);
assertThat(proxyManagerSpy.getProxy("node1", false)).isNotNull();
assertThat(proxyManagerSpy.getProxy("node2", false)).isNotNull();
// node1 success
proxyManagerSpy.reportNodeCommunicationSuccess("node1");
// node1 failure
reportNodeFailure(proxyManagerSpy, "node1");
verifyNoMoreInteractions(_nodeSelectionPolicy);
assertThat(proxyManagerSpy.getProxy("node1", false)).isNotNull();
assertThat(proxyManagerSpy.getProxy("node2", false)).isNotNull();
// node2 failure
reportNodeFailure(proxyManagerSpy, "node2");
verify(_nodeSelectionPolicy).removeNode("node2");
verifyNoMoreInteractions(_nodeSelectionPolicy);
assertThat(proxyManagerSpy.getProxy("node1", false)).isNotNull();
assertThat(proxyManagerSpy.getProxy("node2", false)).isNull();
}
@Test
public void testProxyFailure_ConnectionFailure() throws Exception {
NodeProxyManager proxyManagerSpy = spy(_proxyManager);
IContentServer contentServer = mock(IContentServer.class);
doReturn(contentServer).when(proxyManagerSpy).createNodeProxy(anyString());
assertThat(proxyManagerSpy.getProxy("node1", true)).isNotNull();
assertThat(proxyManagerSpy.getProxy("node2", true)).isNotNull();
proxyManagerSpy.setSuccessiveProxyFailuresBeforeReestablishing(2);
// node1 connect failure
reportNodeFailure(proxyManagerSpy, "node1", new InvocationTargetException(new ConnectException()));
verify(_nodeSelectionPolicy).removeNode("node1");
verifyNoMoreInteractions(_nodeSelectionPolicy);
assertThat(proxyManagerSpy.getProxy("node1", false)).isNull();
assertThat(proxyManagerSpy.getProxy("node2", false)).isNotNull();
}
private void reportNodeFailure(NodeProxyManager proxyManagerSpy, String nodeName) {
reportNodeFailure(proxyManagerSpy, nodeName, new RuntimeException());
}
private void reportNodeFailure(NodeProxyManager proxyManagerSpy, String nodeName, Exception exception) {
try {
proxyManagerSpy.reportNodeCommunicationFailure(nodeName, exception);
} catch (IllegalArgumentException e) {
assertThat(e).hasMessage("not a proxy instance");
}
}
}