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.distributedlog;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import java.util.List;
  import java.util.Optional;
  import org.apache.bookkeeper.net.DNSToSwitchMapping;
  import org.apache.commons.configuration2.StrictConfigurationComparator;
  import org.apache.distributedlog.net.DNSResolverForRacks;
  import org.apache.distributedlog.net.DNSResolverForRows;
  import org.junit.Test;
  
  
  
  /**
   * Test Cases for truncation.
   */
  public class TestDistributedLogConfiguration {
  
      static final class TestDNSResolver implements DNSToSwitchMapping {
  
          public TestDNSResolver() {}
  
          @Override
          public List<String> resolve(List<String> list) {
              return list;
          }
  
          @Override
          public void reloadCachedMappings() {
              // no-op
          }
      }
  
      @Test(timeout = 20000)
      public void loadStreamConfGoodOverrideAccepted() throws Exception {
          DistributedLogConfiguration conf = new DistributedLogConfiguration();
          assertEquals(conf.getPeriodicFlushFrequencyMilliSeconds(),
              DistributedLogConfiguration.BKDL_PERIODIC_FLUSH_FREQUENCY_MILLISECONDS_DEFAULT);
          assertEquals(conf.getReaderIdleErrorThresholdMillis(),
              DistributedLogConfiguration.BKDL_READER_IDLE_ERROR_THRESHOLD_MILLIS_DEFAULT);
          DistributedLogConfiguration override = new DistributedLogConfiguration();
          override.setPeriodicFlushFrequencyMilliSeconds(
              DistributedLogConfiguration.BKDL_PERIODIC_FLUSH_FREQUENCY_MILLISECONDS_DEFAULT + 1);
          override.setReaderIdleErrorThresholdMillis(
              DistributedLogConfiguration.BKDL_READER_IDLE_ERROR_THRESHOLD_MILLIS_DEFAULT - 1);
          conf.loadStreamConf(Optional.of(override));
          assertEquals(conf.getPeriodicFlushFrequencyMilliSeconds(),
              DistributedLogConfiguration.BKDL_PERIODIC_FLUSH_FREQUENCY_MILLISECONDS_DEFAULT + 1);
          assertEquals(conf.getReaderIdleErrorThresholdMillis(),
              DistributedLogConfiguration.BKDL_READER_IDLE_ERROR_THRESHOLD_MILLIS_DEFAULT - 1);
      }
  
      @SuppressWarnings("deprecation")
      @Test(timeout = 20000)
      public void loadStreamConfBadOverrideIgnored() throws Exception {
          DistributedLogConfiguration conf = new DistributedLogConfiguration();
          assertEquals(conf.getBKClientWriteTimeout(),
              DistributedLogConfiguration.BKDL_BKCLIENT_WRITE_TIMEOUT_DEFAULT);
          DistributedLogConfiguration override = new DistributedLogConfiguration();
          override.setBKClientWriteTimeout(
              DistributedLogConfiguration.BKDL_BKCLIENT_WRITE_TIMEOUT_DEFAULT + 1);
          conf.loadStreamConf(Optional.of(override));
          assertEquals(conf.getBKClientWriteTimeout(),
              DistributedLogConfiguration.BKDL_BKCLIENT_WRITE_TIMEOUT_DEFAULT);
      }
  
      @Test(timeout = 20000)
      public void loadStreamConfNullOverrides() throws Exception {
          DistributedLogConfiguration conf = new DistributedLogConfiguration();
          DistributedLogConfiguration confClone = new DistributedLogConfiguration();
          Optional<DistributedLogConfiguration> streamConfiguration = Optional.empty();
          conf.loadStreamConf(streamConfiguration);
  
          StrictConfigurationComparator comp = new StrictConfigurationComparator();
          assertTrue(comp.compare(conf, confClone));
      }
  
      @Test(timeout = 200000)
      public void getEnsemblePlacementResolverClass() throws Exception {
          DistributedLogConfiguration conf1 = new DistributedLogConfiguration();
          assertEquals(DNSResolverForRacks.class, conf1.getEnsemblePlacementDnsResolverClass());
          DistributedLogConfiguration conf2 = new DistributedLogConfiguration()
                  .setRowAwareEnsemblePlacementEnabled(true);
          assertEquals(DNSResolverForRows.class, conf2.getEnsemblePlacementDnsResolverClass());
          DistributedLogConfiguration conf3 = new DistributedLogConfiguration()
                  .setRowAwareEnsemblePlacementEnabled(true)
                  .setEnsemblePlacementDnsResolverClass(TestDNSResolver.class);
          assertEquals(TestDNSResolver.class, conf3.getEnsemblePlacementDnsResolverClass());
      }
  
      @SuppressWarnings("deprecation")
      @Test(timeout = 200000)
      public void validateConfiguration(){
          boolean exceptionThrown = false;
          DistributedLogConfiguration conf = new DistributedLogConfiguration();
          // validate default configuration
          conf.validate();
          // test equal, should not throw exception
          conf.setReadLACLongPollTimeout(conf.getBKClientReadTimeout() * 1000);
          try {
              conf.validate();
          } catch (IllegalArgumentException e){
              exceptionThrown = true;
          }
          assertFalse(exceptionThrown);
          // test invalid case, should throw exception
          exceptionThrown = false;
          conf.setReadLACLongPollTimeout(conf.getBKClientReadTimeout() * 1000 * 2);
          try {
              conf.validate();
          } catch (IllegalArgumentException e){
              exceptionThrown = true;
          }
          assertTrue(exceptionThrown);
      }
  
  
  }
  