Package org.apache.hadoop.gateway.ha.provider.impl

Examples of org.apache.hadoop.gateway.ha.provider.impl.DefaultHaProvider

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   @Test
   public void testInitCallsSuperInit() throws Exception {
     DefaultHaDescriptor haDescriptor = new DefaultHaDescriptor();
     haDescriptor.addServiceConfig( new DefaultHaServiceConfig( "test-role" ) );
     HaProvider haProvider = new DefaultHaProvider( haDescriptor );
     ServletContext context = EasyMock.createNiceMock(ServletContext.class);
     EasyMock.expect(context.getAttribute(HaServletContextListener.PROVIDER_ATTRIBUTE_NAME)).andReturn(haProvider).anyTimes();
     FilterConfig config = EasyMock.createNiceMock( FilterConfig.class );
     EasyMock.expect(config.getServletContext()).andReturn(context).anyTimes();
     EasyMock.expect(config.getInitParameter( WebHdfsHaHttpClientDispatch.RESOURCE_ROLE_ATTRIBUTE )).andReturn("test-role").anyTimes();
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   @Test
   public void testConnectivityFailover() throws Exception {
      String serviceName = "WEBHDFS";
      HaDescriptor descriptor = HaDescriptorFactory.createDescriptor();
      descriptor.addServiceConfig(HaDescriptorFactory.createServiceConfig(serviceName, "true", "1", "1000", "2", "1000"));
      HaProvider provider = new DefaultHaProvider(descriptor);
      URI uri1 = new URI( "http://unreachable-host" );
      URI uri2 = new URI( "http://reachable-host" );
      ArrayList<String> urlList = new ArrayList<String>();
      urlList.add(uri1.toString());
      urlList.add(uri2.toString());
      provider.addHaService(serviceName, urlList);
      FilterConfig filterConfig = EasyMock.createNiceMock(FilterConfig.class);
      ServletContext servletContext = EasyMock.createNiceMock(ServletContext.class);

      EasyMock.expect(filterConfig.getInitParameter(WebHdfsHaHttpClientDispatch.RESOURCE_ROLE_ATTRIBUTE)).andReturn(serviceName).anyTimes();
      EasyMock.expect(filterConfig.getServletContext()).andReturn(servletContext).anyTimes();
      EasyMock.expect(servletContext.getAttribute(HaServletContextListener.PROVIDER_ATTRIBUTE_NAME)).andReturn(provider).anyTimes();

      BasicHttpParams params = new BasicHttpParams();

      HttpUriRequest outboundRequest = EasyMock.createNiceMock(HttpRequestBase.class);
      EasyMock.expect(outboundRequest.getMethod()).andReturn( "GET" ).anyTimes();
      EasyMock.expect(outboundRequest.getURI()).andReturn( uri1  ).anyTimes();
      EasyMock.expect(outboundRequest.getParams()).andReturn( params ).anyTimes();

      HttpServletRequest inboundRequest = EasyMock.createNiceMock(HttpServletRequest.class);
      EasyMock.expect(inboundRequest.getRequestURL()).andReturn( new StringBuffer(uri2.toString()) ).once();
      EasyMock.expect(inboundRequest.getAttribute("dispatch.ha.failover.counter")).andReturn(new AtomicInteger(0)).once();
      EasyMock.expect(inboundRequest.getAttribute("dispatch.ha.failover.counter")).andReturn(new AtomicInteger(1)).once();

      HttpServletResponse outboundResponse = EasyMock.createNiceMock(HttpServletResponse.class);
      EasyMock.expect(outboundResponse.getOutputStream()).andAnswer( new IAnswer<ServletOutputStream>() {
         @Override
         public ServletOutputStream answer() throws Throwable {
            return new ServletOutputStream() {
               @Override
               public void write( int b ) throws IOException {
                  throw new IOException( "unreachable-host" );
               }
            };
         }
      }).once();
      EasyMock.replay(filterConfig, servletContext, outboundRequest, inboundRequest, outboundResponse);
      Assert.assertEquals(uri1.toString(), provider.getActiveURL(serviceName));
      WebHdfsHaHttpClientDispatch dispatch = new WebHdfsHaHttpClientDispatch();
      dispatch.init(filterConfig);
      long startTime = System.currentTimeMillis();
      try {
         dispatch.executeRequest(outboundRequest, inboundRequest, outboundResponse);
      } catch (IOException e) {
        //this is expected after the failover limit is reached
      }
      long elapsedTime = System.currentTimeMillis() - startTime;
      Assert.assertEquals(uri2.toString(), provider.getActiveURL(serviceName));
      //test to make sure the sleep took place
      Assert.assertTrue(elapsedTime > 1000);
   }
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   private void setupHaProvider(HaDescriptor descriptor, ServletContext servletContext) {
      GatewayServices services = (GatewayServices) servletContext.getAttribute(GatewayServices.GATEWAY_SERVICES_ATTRIBUTE);
      String clusterName = (String) servletContext.getAttribute(GatewayServices.GATEWAY_CLUSTER_ATTRIBUTE);
      ServiceRegistry serviceRegistry = services.getService(GatewayServices.SERVICE_REGISTRY_SERVICE);
      HaProvider provider = new DefaultHaProvider(descriptor);
      List<String> serviceNames = descriptor.getEnabledServiceNames();
      for (String serviceName : serviceNames) {
         provider.addHaService(serviceName, serviceRegistry.lookupServiceURLs(clusterName, serviceName));
      }
      servletContext.setAttribute(PROVIDER_ATTRIBUTE_NAME, provider);
   }
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Related Classes of org.apache.hadoop.gateway.ha.provider.impl.DefaultHaProvider

  • org.apache.hadoop.gateway.ha.provider.HaServiceConfig
  • org.apache.hadoop.gateway.ha.provider.HaServletContextListener
  • org.apache.hadoop.gateway.hdfs.dispatch.WebHdfsHaHttpClientDispatchTest
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