Examples of BackoffLimitedRetryHandler

org.jclouds.http.handlers.BackoffLimitedRetryHandler
Allow replayable request to be retried a limited number of times, and impose an exponential back-off delay before returning.
The back-off delay grows rapidly according to the formula 50 * ( {@link TransformingHttpCommand#getFailureCount()} ^ 2). For example:

Number of Attempts Delay in milliseconds

1 50

2 200

3 450

4 800

5 1250

This implementation has two side-effects. It increments the command's failure count with {@link TransformingHttpCommand#incrementFailureCount()}, because this failure count value is used to determine how many times the command has already been tried. It also closes the response's content input stream to ensure connections are cleaned up. @author James Murty

Number of Attempts	Delay in milliseconds
1	50
2	200
3	450
4	800
5	1250

Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

   @Test
   public void test401DoesNotRetry() {


      HttpCommand command = createMock(HttpCommand.class);
      HttpResponse response = createMock(HttpResponse.class);
      BackoffLimitedRetryHandler retry = createMock(BackoffLimitedRetryHandler.class);


      expect(command.getFailureCount()).andReturn(0);
      expect(response.getStatusCode()).andReturn(401).atLeastOnce();


      replay(response);

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

   @Test
   public void test400DoesNotRetry() {


      HttpCommand command = createMock(HttpCommand.class);
      HttpResponse response = createMock(HttpResponse.class);
      BackoffLimitedRetryHandler retry = createMock(BackoffLimitedRetryHandler.class);


      expect(command.getFailureCount()).andReturn(0);
      expect(response.getStatusCode()).andReturn(401).atLeastOnce();


      replay(response);

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler


   @Test
   public void testRetryOn400PutSandbox() {


      HttpCommand command = createMock(HttpCommand.class);
      BackoffLimitedRetryHandler retry = createMock(BackoffLimitedRetryHandler.class);


      HttpRequest request = HttpRequest.builder().method("PUT")
            .endpoint("https://api.opscode.com/organizations/jclouds/sandboxes/bfd68d4052f44053b2e593a33b5e1cd5")
            .build();
      HttpResponse response = HttpResponse
            .builder()
            .statusCode(400)
            .message("400 Bad Request")
            .payload(
                  "{\"error\":[\"Cannot update sandbox bfd68d4052f44053b2e593a33b5e1cd5: checksum 9b7c23369f4b576451216c39f214af6c was not uploaded\"]}")
            .build();


      expect(command.getFailureCount()).andReturn(0);
      expect(command.getCurrentRequest()).andReturn(request).atLeastOnce();
      expect(retry.shouldRetryRequest(command, response)).andReturn(true);


      replay(retry);
      replay(command);


      ChefApiErrorRetryHandler handler = new ChefApiErrorRetryHandler(retry);

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

         "</Error>\n";


   @Test
   public void testGet500WithoutError() {
      AtmosUtils utils = createMock(AtmosUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);


      expect(command.getFailureCount()).andReturn(0).once();
      expect(command.incrementFailureCount()).andReturn(1).once();

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

   }


   @Test
   public void testGet500WithError1040() {
      AtmosUtils utils = createMock(AtmosUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);
      String content = String.format(HTTP_MESSAGE_FORMAT, 1040, "The server is busy. Please try again");
      HttpResponse response = HttpResponse.builder().statusCode(500).payload(content).build();


      expect(command.getFailureCount()).andReturn(0).once();
      expect(utils.parseAtmosErrorFromContent(command, response, content)).andReturn(new AtmosError(1040, "The server is busy. Please try again")).once();
      expect(backoffLimitedRetryHandler.shouldRetryRequest(command, response)).andReturn(true).once();


      replay(utils, backoffLimitedRetryHandler, command);


      AtmosServerErrorRetryHandler retry = new AtmosServerErrorRetryHandler(backoffLimitedRetryHandler, utils);

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

      HttpCommand command = createMock(HttpCommand.class);
      HttpRequest request = createMock(HttpRequest.class);
      HttpResponse response = createMock(HttpResponse.class);
      @SuppressWarnings("unchecked")
      LoadingCache<Credentials, Auth> cache = createMock(LoadingCache.class);
      BackoffLimitedRetryHandler backoffHandler = createMock(BackoffLimitedRetryHandler.class);


      expect(command.getCurrentRequest()).andReturn(request);


      cache.invalidateAll();
      expectLastCall();

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

      HttpCommand command = createMock(HttpCommand.class);
      HttpRequest request = createMock(HttpRequest.class);
      HttpResponse response = createMock(HttpResponse.class);
      @SuppressWarnings("unchecked")
      LoadingCache<Credentials, Auth> cache = createMock(LoadingCache.class);
      BackoffLimitedRetryHandler backoffHandler = createMock(BackoffLimitedRetryHandler.class);


      expect(response.getPayload()).andReturn(Payloads.newStringPayload(
                  "The server has waited too long for the request to be sent by the client.")).times(2);
      expect(backoffHandler.shouldRetryRequest(command, response)).andReturn(true).once();
      expect(response.getStatusCode()).andReturn(408).once();


      replay(command);
      replay(response);
      replay(cache);

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

      HttpCommand command = createMock(HttpCommand.class);
      HttpRequest request = createMock(HttpRequest.class);
      HttpResponse response = createMock(HttpResponse.class);
      @SuppressWarnings("unchecked")
      LoadingCache<Credentials, Auth> cache = createMock(LoadingCache.class);
      BackoffLimitedRetryHandler backoffHandler = createMock(BackoffLimitedRetryHandler.class);


      expect(response.getPayload()).andReturn(Payloads.newStringPayload("")).times(2);
      expect(response.getStatusCode()).andReturn(404).once();


      replay(command);

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

      HttpCommand command = createMock(HttpCommand.class);
      HttpRequest request = createMock(HttpRequest.class);
      HttpResponse response = createMock(HttpResponse.class);
      @SuppressWarnings("unchecked")
      LoadingCache<Credentials, Access> cache = createMock(LoadingCache.class);
      BackoffLimitedRetryHandler backoffHandler = createMock(BackoffLimitedRetryHandler.class);


      expect(command.getCurrentRequest()).andReturn(request);


      cache.invalidateAll();
      expectLastCall();

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Examples of org.jclouds.http.handlers.BackoffLimitedRetryHandler

      HttpRequest request = createMock(HttpRequest.class);
      HttpResponse response = createMock(HttpResponse.class);


      @SuppressWarnings("unchecked")
      LoadingCache<Credentials, Access> cache = createMock(LoadingCache.class);
      BackoffLimitedRetryHandler backoffHandler = createMock(BackoffLimitedRetryHandler.class);


      expect(command.getCurrentRequest()).andReturn(request).anyTimes();
      expect(request.getHeaders()).andStubReturn(null);


      cache.invalidateAll();

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