content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio;
  
  import static alluxio.exception.ExceptionMessage.INCOMPATIBLE_VERSION;
  
  import alluxio.conf.Configuration;
  import alluxio.exception.status.AlluxioStatusException;
  import alluxio.exception.status.NotFoundException;
  import alluxio.exception.status.UnavailableException;
  import alluxio.grpc.GrpcServerAddress;
  import alluxio.grpc.ServiceType;
  import alluxio.retry.CountingRetry;
  import alluxio.security.user.BaseUserState;
  
  import org.junit.Assert;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  import org.mockito.ArgumentCaptor;
  import org.mockito.Mockito;
  
  import java.io.IOException;
  import java.net.InetSocketAddress;
  
  /**
   * Unit tests for {@link AbstractClient}.
   */
  public final class AbstractClientTest {
  
    private static final String SERVICE_NAME = "Test Service Name";
    @Rule
    public ExpectedException mExpectedException = ExpectedException.none();
  
    private static class BaseTestClient extends AbstractClient {
      private long mRemoteServiceVersion;
  
      protected BaseTestClient() {
        super(ClientContext.create(Configuration.global()),
            () -> new CountingRetry(1));
      }
  
      protected BaseTestClient(ClientContext context) {
        super(context, () -> new CountingRetry(1));
      }
  
      public BaseTestClient(long remoteServiceVersion) {
        this();
        mRemoteServiceVersion = remoteServiceVersion;
      }
  
      @Override
      protected ServiceType getRemoteServiceType() {
        return ServiceType.UNKNOWN_SERVICE;
      }
  
      @Override
      protected String getServiceName() {
        return SERVICE_NAME;
      }
  
      @Override
      protected long getServiceVersion() {
        return 1;
      }
  
      @Override
      protected synchronized GrpcServerAddress queryGrpcServerAddress() throws UnavailableException {
        throw new UnavailableException("Unavailable");
      }
  
      @Override
      protected long getRemoteServiceVersion() throws AlluxioStatusException {
        return mRemoteServiceVersion;
      }
    }
  
    private static class TestServiceNotFoundClient extends BaseTestClient {
      protected long getRemoteServiceVersion() throws AlluxioStatusException {
        throw new NotFoundException("Service not found");
      }
  
      @Override
      protected void afterConnect() throws IOException {
        return;
      }
  
      @Override
      protected void beforeConnect() throws IOException {
        return;
      }
    }
  
    @Test
    public void connectFailToDetermineMasterAddress() throws Exception {
      alluxio.Client client = new BaseTestClient() {
        @Override
        public synchronized InetSocketAddress getRemoteSockAddress() throws UnavailableException {
          throw new UnavailableException("Failed to determine master address");
        }
      };
      mExpectedException.expect(UnavailableException.class);
      mExpectedException.expectMessage("Failed to determine address for Test Service Name");
      client.connect();
    }
  
    @Test
    public void unsupportedVersion() throws Exception {
      mExpectedException.expect(IOException.class);
      mExpectedException.expectMessage(INCOMPATIBLE_VERSION.getMessage(SERVICE_NAME, 0, 1));
      final AbstractClient client = new BaseTestClient(1);
      client.checkVersion(0);
      client.close();
    }
  
    @Test
    public void supportedVersion() throws Exception {
      final AbstractClient client = new BaseTestClient(1);
      client.checkVersion(1);
      client.close();
    }
  
    @Test
    public void confAddress() throws Exception {
      ClientContext context = Mockito.mock(ClientContext.class);
      Mockito.when(context.getClusterConf()).thenReturn(
          Configuration.modifiableGlobal());
  
      InetSocketAddress baseAddress = new InetSocketAddress("0.0.0.0", 2000);
      InetSocketAddress confAddress = new InetSocketAddress("0.0.0.0", 2000);
      final alluxio.Client client = new BaseTestClient(context) {
        @Override
        protected synchronized GrpcServerAddress queryGrpcServerAddress() {
          return GrpcServerAddress.create(baseAddress);
        }
  
        @Override
        public synchronized String getRemoteHostName() {
          return baseAddress.getHostName();
        }
  
        @Override
        public synchronized InetSocketAddress getConfAddress() {
          return confAddress;
        }
      };
  
      ArgumentCaptor<InetSocketAddress> argument = ArgumentCaptor.forClass(InetSocketAddress.class);
  
      Mockito.doThrow(new RuntimeException("test"))
              .when(context)
              .loadConfIfNotLoaded(argument.capture());
      Mockito.doReturn(Mockito.mock(BaseUserState.class))
              .when(context)
              .getUserState();
  
      try {
        client.connect();
        Assert.fail();
      } catch (Exception e) {
        // ignore any exceptions. It's expected.
      }
  
      Assert.assertEquals(confAddress, argument.getValue());
    }
  
    @Test
    public void serviceNotFound() throws Exception {
      mExpectedException.expect(NotFoundException.class);
      final AbstractClient client = new TestServiceNotFoundClient();
      client.checkVersion(0);
      client.close();
    }
  }
  