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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.
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  package org.apache.atlas.repository.migration;
  
  import org.apache.atlas.model.impexp.MigrationStatus;
  import org.apache.atlas.repository.graphdb.GraphDBMigrator;
  import org.apache.atlas.repository.graphdb.janus.migration.ReaderStatusManager;
  import org.apache.atlas.repository.impexp.MigrationProgressService;
  import org.apache.commons.configuration.Configuration;
  import org.apache.commons.lang.StringUtils;
  import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph;
  import org.testng.annotations.Test;
  
  import static org.mockito.Matchers.anyLong;
  import static org.mockito.Matchers.anyString;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertNotEquals;
  import static org.testng.Assert.assertNotNull;
  import static org.testng.Assert.assertTrue;
  
  public class MigrationProgressServiceTest {
      private final long   currentIndex  = 100L;
      private final long   totalIndex    = 1000L;
      private final long   increment     = 1001L;
      private final String statusSuccess = ReaderStatusManager.STATUS_SUCCESS;
  
      @Test
      public void absentStatusNodeReturnsDefaultStatus() {
          MigrationProgressService mps = getMigrationStatusForTest(null, null);
          MigrationStatus          ms  = mps.getStatus();
  
          assertNotNull(ms);
          assertTrue(StringUtils.isEmpty(ms.getOperationStatus()));
          assertEquals(ms.getCurrentIndex(), 0);
          assertEquals(ms.getTotalCount(), 0);
      }
  
      @Test
      public void existingStatusNodeRetrurnStatus() {
          final long   currentIndex = 100L;
          final long   totalIndex   = 1000L;
          final String status       = ReaderStatusManager.STATUS_SUCCESS;
  
          TinkerGraph              tg  = createUpdateStatusNode(null, currentIndex, totalIndex, status);
          MigrationProgressService mps = getMigrationStatusForTest(null, tg);
          MigrationStatus          ms  = mps.getStatus();
  
          assertMigrationStatus(totalIndex, status, ms);
      }
  
      @Test
      public void cachedStatusReturnedIfQueriedBeforeCacheExpiration() {
          TinkerGraph tg = createUpdateStatusNode(null, currentIndex, totalIndex, statusSuccess);
  
          MigrationProgressService mps = getMigrationStatusForTest(null, tg);
          MigrationStatus          ms  = mps.getStatus();
  
          createUpdateStatusNode(tg, currentIndex + increment, totalIndex + increment, ReaderStatusManager.STATUS_FAILED);
          MigrationStatus ms2 = mps.getStatus();
  
          assertEquals(ms.hashCode(), ms2.hashCode());
          assertMigrationStatus(totalIndex, statusSuccess, ms);
      }
  
      @Test
      public void cachedUpdatedIfQueriedAfterCacheExpiration() throws InterruptedException {
          final String statusFailed = ReaderStatusManager.STATUS_FAILED;
  
          TinkerGraph              tg       = createUpdateStatusNode(null, currentIndex, totalIndex, statusSuccess);
          long                     cacheTTl = 100L;
          MigrationProgressService mps      = getMigrationStatusForTest(getStubConfiguration(cacheTTl), tg);
          MigrationStatus          ms       = mps.getStatus();
  
          assertMigrationStatus(totalIndex, statusSuccess, ms);
  
          createUpdateStatusNode(tg, currentIndex + increment, totalIndex + increment, ReaderStatusManager.STATUS_FAILED);
          Thread.sleep(2 * cacheTTl);
  
          MigrationStatus ms2 = mps.getStatus();
  
          assertNotEquals(ms.hashCode(), ms2.hashCode());
  
          assertMigrationStatus(totalIndex + increment, statusFailed, ms2);
      }
  
      private GraphDBMigrator createMigrator(TinkerGraph tg) {
          GraphDBMigrator gdm = mock(GraphDBMigrator.class);
  
          when(gdm.getMigrationStatus()).thenAnswer(invocation -> ReaderStatusManager.get(tg));
  
          return gdm;
      }
  
      private MigrationProgressService getMigrationStatusForTest(Configuration cfg, TinkerGraph tg) {
          return new MigrationProgressService(cfg, createMigrator(tg));
      }
  
      private Configuration getStubConfiguration(long ttl) {
          Configuration cfg = mock(Configuration.class);
  
          when(cfg.getLong(anyString(), anyLong())).thenReturn(ttl);
  
          return cfg;
      }
  
      private TinkerGraph createUpdateStatusNode(TinkerGraph tg, long currentIndex, long totalIndex, String status) {
          if (tg == null) {
              tg = TinkerGraph.open();
          }
  
          ReaderStatusManager rsm = new ReaderStatusManager(tg, tg);
  
          rsm.update(tg, currentIndex, false);
          rsm.end(tg, totalIndex, status);
  
          return tg;
      }
  
      private void assertMigrationStatus(long totalIndex, String status, MigrationStatus ms) {
          assertNotNull(ms);
          assertEquals(ms.getOperationStatus(), status);
          assertEquals(ms.getCurrentIndex(), totalIndex);
          assertEquals(ms.getTotalCount(), totalIndex);
      }
  }
  