| /* |
| * 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.samza.webapp; |
| |
| import com.google.common.collect.ImmutableMap; |
| import java.net.URL; |
| import java.util.Collections; |
| import org.apache.samza.container.LocalityManager; |
| import org.apache.samza.coordinator.server.HttpServer; |
| import org.apache.samza.coordinator.server.LocalityServlet; |
| import org.apache.samza.job.model.ProcessorLocality; |
| import org.apache.samza.job.model.LocalityModel; |
| import org.apache.samza.serializers.model.SamzaObjectMapper; |
| import org.apache.samza.util.ExponentialSleepStrategy; |
| import org.apache.samza.util.HttpUtil; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.eclipse.jetty.servlet.DefaultServlet; |
| import org.eclipse.jetty.servlet.ServletHolder; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| |
| /** |
| * A test class for {@link LocalityServlet}. It validates the servlet directly and Serde Mix-In of {@link ProcessorLocality} |
| * indirectly. |
| */ |
| public class TestLocalityServlet { |
| private static final String PROCESSOR_ID1 = "1"; |
| private static final String PROCESSOR_ID2 = "2"; |
| private static final String HOST1 = "host1"; |
| private static final String HOST2 = "host2"; |
| private static final String JMX_URL = "jmx"; |
| private static final String TUNNELING_URL = "tunneling"; |
| |
| private static final ProcessorLocality PROCESSOR_1_LOCALITY = |
| new ProcessorLocality(PROCESSOR_ID1, HOST1, JMX_URL, TUNNELING_URL); |
| private static final ProcessorLocality PROCESSOR_2_LOCALITY = |
| new ProcessorLocality("2", HOST2, JMX_URL, TUNNELING_URL); |
| |
| private final ObjectMapper mapper = SamzaObjectMapper.getObjectMapper(); |
| private HttpServer webApp; |
| private LocalityManager localityManager; |
| |
| |
| |
| @Before |
| public void setup() |
| throws Exception { |
| localityManager = mock(LocalityManager.class); |
| when(localityManager.readLocality()) |
| .thenReturn(new LocalityModel(ImmutableMap.of(PROCESSOR_ID1, PROCESSOR_1_LOCALITY, PROCESSOR_ID2, PROCESSOR_2_LOCALITY))); |
| webApp = new HttpServer("/", 0, "", new ServletHolder(new DefaultServlet())); |
| webApp.addServlet("/locality", new LocalityServlet(localityManager)); |
| webApp.start(); |
| } |
| |
| @After |
| public void cleanup() |
| throws Exception { |
| webApp.stop(); |
| } |
| |
| @Test |
| public void testReadContainerLocality() throws Exception { |
| URL url = new URL(webApp.getUrl().toString() + "locality"); |
| |
| String response = HttpUtil.read(url, 1000, new ExponentialSleepStrategy()); |
| LocalityModel locality = mapper.readValue(response, LocalityModel.class); |
| |
| assertEquals("Expected locality for two containers", 2, locality.getProcessorLocalities().size()); |
| assertEquals("Mismatch in locality for processor " + PROCESSOR_ID1, |
| locality.getProcessorLocality(PROCESSOR_ID1), PROCESSOR_1_LOCALITY); |
| assertEquals("Mismatch in locality for processor " + PROCESSOR_ID2, |
| locality.getProcessorLocality(PROCESSOR_ID2), PROCESSOR_2_LOCALITY); |
| } |
| |
| @Test |
| public void testReadContainerLocalityWithNoLocality() throws Exception { |
| final LocalityModel expectedLocality = new LocalityModel(Collections.emptyMap()); |
| URL url = new URL(webApp.getUrl().toString() + "locality"); |
| when(localityManager.readLocality()).thenReturn(new LocalityModel(ImmutableMap.of())); |
| |
| String response = HttpUtil.read(url, 1000, new ExponentialSleepStrategy()); |
| LocalityModel locality = mapper.readValue(response, LocalityModel.class); |
| |
| assertEquals("Expected empty response but got " + locality, locality, expectedLocality); |
| } |
| |
| @Test |
| public void testReadProcessorLocality() throws Exception { |
| URL url = new URL(webApp.getUrl().toString() + "locality?processorId=" + PROCESSOR_ID1); |
| String response = HttpUtil.read(url, 1000, new ExponentialSleepStrategy()); |
| |
| assertEquals("Mismatch in the locality for processor " + PROCESSOR_ID1, |
| mapper.readValue(response, ProcessorLocality.class), PROCESSOR_1_LOCALITY); |
| } |
| |
| @Test |
| public void testReadProcessorLocalityWithNoLocality() throws Exception { |
| final ProcessorLocality expectedProcessorLocality = new ProcessorLocality(PROCESSOR_ID2, ""); |
| URL url = new URL(webApp.getUrl().toString() + "locality?processorId=" + PROCESSOR_ID2); |
| when(localityManager.readLocality()).thenReturn(new LocalityModel(ImmutableMap.of())); |
| |
| String response = HttpUtil.read(url, 1000, new ExponentialSleepStrategy()); |
| ProcessorLocality processorLocality = mapper.readValue(response, ProcessorLocality.class); |
| |
| assertEquals("Expected empty response for processor locality " + PROCESSOR_ID2 + " but got " + processorLocality, |
| processorLocality, expectedProcessorLocality); |
| } |
| } |