content: /*
   * 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.ambari.server.stack;
  
  import static org.easymock.EasyMock.createNiceMock;
  import static org.easymock.EasyMock.expect;
  import static org.easymock.EasyMock.replay;
  import static org.easymock.EasyMock.verify;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.fail;
  
  import java.io.File;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.controller.AmbariManagementHelper;
  import org.apache.ambari.server.metadata.ActionMetadata;
  import org.apache.ambari.server.orm.dao.ExtensionDAO;
  import org.apache.ambari.server.orm.dao.ExtensionLinkDAO;
  import org.apache.ambari.server.orm.dao.MetainfoDAO;
  import org.apache.ambari.server.orm.dao.StackDAO;
  import org.apache.ambari.server.orm.entities.ExtensionLinkEntity;
  import org.apache.ambari.server.orm.entities.StackEntity;
  import org.apache.ambari.server.state.StackInfo;
  import org.apache.ambari.server.state.stack.OsFamily;
  import org.easymock.EasyMock;
  import org.junit.Test;
  
  /**
   * StackManager Misc unit tests.
   */
  public class StackManagerMiscTest  {
  
    @Test
    public void testCycleDetection() throws Exception {
      MetainfoDAO metaInfoDao = createNiceMock(MetainfoDAO.class);
      StackDAO stackDao = createNiceMock(StackDAO.class);
      ExtensionDAO extensionDao = createNiceMock(ExtensionDAO.class);
      ExtensionLinkDAO linkDao = createNiceMock(ExtensionLinkDAO.class);
      ActionMetadata actionMetadata = createNiceMock(ActionMetadata.class);
      OsFamily osFamily = createNiceMock(OsFamily.class);
      StackEntity stackEntity = createNiceMock(StackEntity.class);
  
      expect(
          stackDao.find(EasyMock.anyObject(String.class),
              EasyMock.anyObject(String.class))).andReturn(stackEntity).atLeastOnce();
  
      List<ExtensionLinkEntity> list = Collections.emptyList();
      expect(
          linkDao.findByStack(EasyMock.anyObject(String.class),
              EasyMock.anyObject(String.class))).andReturn(list).atLeastOnce();
  
      replay(actionMetadata, stackDao, extensionDao, linkDao, metaInfoDao, osFamily);
      AmbariManagementHelper helper = new AmbariManagementHelper(stackDao, extensionDao, linkDao);
  
      try {
        String stacksCycle1 = ClassLoader.getSystemClassLoader().getResource("stacks_with_cycle").getPath();
  
        StackManager stackManager = new StackManager(new File(stacksCycle1), null, null, osFamily, false,
            metaInfoDao, actionMetadata, stackDao, extensionDao, linkDao, helper);
  
        fail("Expected exception due to cyclic stack");
      } catch (AmbariException e) {
        // expected
        assertEquals("Cycle detected while parsing stack definition", e.getMessage());
      }
      try {
        String stacksCycle2 = ClassLoader.getSystemClassLoader().getResource(
            "stacks_with_cycle2").getPath();
  
        StackManager stackManager = new StackManager(new File(stacksCycle2),
            null, null, osFamily, true, metaInfoDao, actionMetadata, stackDao, extensionDao, linkDao, helper);
  
        fail("Expected exception due to cyclic stack");
      } catch (AmbariException e) {
        // expected
        assertEquals("Cycle detected while parsing stack definition", e.getMessage());
      }
    }
  
    /**
     * This test ensures the service status check is added into the action metadata when
     * the stack has no parent and is the only stack in the stack family
     */
    @Test
    public void testGetServiceInfoFromSingleStack() throws Exception {
      MetainfoDAO metaInfoDao = createNiceMock(MetainfoDAO.class);
      StackDAO stackDao = createNiceMock(StackDAO.class);
      ExtensionDAO extensionDao = createNiceMock(ExtensionDAO.class);
      ExtensionLinkDAO linkDao = createNiceMock(ExtensionLinkDAO.class);
      ActionMetadata actionMetadata = createNiceMock(ActionMetadata.class);
      OsFamily  osFamily = createNiceMock(OsFamily.class);
      StackEntity stackEntity = createNiceMock(StackEntity.class);
  
      // ensure that service check is added for HDFS
      actionMetadata.addServiceCheckAction("HDFS");
  
      expect(
          stackDao.find(EasyMock.anyObject(String.class),
              EasyMock.anyObject(String.class))).andReturn(stackEntity).atLeastOnce();
  
      List<ExtensionLinkEntity> list = Collections.emptyList();
      expect(
          linkDao.findByStack(EasyMock.anyObject(String.class),
              EasyMock.anyObject(String.class))).andReturn(list).atLeastOnce();
  
      replay(metaInfoDao, stackDao, extensionDao, linkDao, actionMetadata, osFamily);
  
      String singleStack = ClassLoader.getSystemClassLoader().getResource("single_stack").getPath();
      AmbariManagementHelper helper = new AmbariManagementHelper(stackDao, extensionDao, linkDao);
  
      StackManager stackManager = new StackManager(new File(singleStack.replace(
          StackManager.PATH_DELIMITER, File.separator)), null, null, osFamily, false, metaInfoDao,
          actionMetadata, stackDao, extensionDao, linkDao, helper);
  
      Collection<StackInfo> stacks = stackManager.getStacks();
      assertEquals(1, stacks.size());
      assertNotNull(stacks.iterator().next().getService("HDFS"));
  
      verify(metaInfoDao, stackDao, actionMetadata, osFamily);
    }
  
    /**
     * This test ensures that service upgrade xml that creates circular dependencies
     * will throw an exception.
     */
    @Test
    public void testCircularDependencyForServiceUpgrade() throws Exception {
      MetainfoDAO metaInfoDao = createNiceMock(MetainfoDAO.class);
      StackDAO stackDao = createNiceMock(StackDAO.class);
      ExtensionDAO extensionDao = createNiceMock(ExtensionDAO.class);
      ExtensionLinkDAO linkDao = createNiceMock(ExtensionLinkDAO.class);
      ActionMetadata actionMetadata = createNiceMock(ActionMetadata.class);
      OsFamily osFamily = createNiceMock(OsFamily.class);
      StackEntity stackEntity = createNiceMock(StackEntity.class);
  
      expect(
          stackDao.find(EasyMock.anyObject(String.class),
              EasyMock.anyObject(String.class))).andReturn(stackEntity).atLeastOnce();
  
      List<ExtensionLinkEntity> list = Collections.emptyList();
      expect(
          linkDao.findByStack(EasyMock.anyObject(String.class),
              EasyMock.anyObject(String.class))).andReturn(list).atLeastOnce();
  
      replay(metaInfoDao, stackDao, extensionDao, linkDao, actionMetadata, osFamily);
  
      AmbariManagementHelper helper = new AmbariManagementHelper(stackDao, extensionDao, linkDao);
  
      try {
        String upgradeCycle = ClassLoader.getSystemClassLoader().getResource("stacks_with_upgrade_cycle").getPath();
  
        StackManager stackManager = new StackManager(new File(upgradeCycle), null, null, osFamily, false,
            metaInfoDao, actionMetadata, stackDao, extensionDao, linkDao, helper);
  
        fail("Expected exception due to cyclic service upgrade xml");
      } catch (AmbariException e) {
        // expected
        assertEquals("Missing groups: [BAR, FOO]", e.getMessage());
      }
    }
  }
  