Examples of org.jclouds.http.handlers.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

   public void test408ShouldRetry() {
      HttpCommand command = createMock(HttpCommand.class);
      HttpResponse response = createMock(HttpResponse.class);
      @SuppressWarnings("unchecked")
      LoadingCache<Credentials, Access> 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);

View Full Code Here

public class AWSClientErrorRetryHandlerTest {
   @Test
   public void test401DoesNotRetry() {


      AWSUtils utils = createMock(AWSUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);


      replay(utils, backoffLimitedRetryHandler, command);


      AWSClientErrorRetryHandler retry = new AWSClientErrorRetryHandler(utils, backoffLimitedRetryHandler,

View Full Code Here


   @Test(dataProvider = "codes")
   public void test409DoesBackoffAndRetryForCode(String code) {


      AWSUtils utils = createMock(AWSUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);


      HttpRequest putBucket = HttpRequest.builder().method(PUT)
            .endpoint("https://adriancole-blobstore113.s3.amazonaws.com/").build();


      HttpResponse operationAborted = HttpResponse.builder().statusCode(CONFLICT.getStatusCode())
            .payload(Payloads.newStringPayload(String.format("<Error><Code>%s</Code></Error>", code))).build();


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


      AWSError error = new AWSError();
      error.setCode(code);


      expect(utils.parseAWSErrorFromContent(putBucket, operationAborted)).andReturn(error);


      expect(backoffLimitedRetryHandler.shouldRetryRequest(command, operationAborted)).andReturn(Boolean.TRUE);


      replay(utils, backoffLimitedRetryHandler, command);


      AWSClientErrorRetryHandler retry = new AWSClientErrorRetryHandler(utils, backoffLimitedRetryHandler,
            ImmutableSet.<String> of("RequestTimeout", "OperationAborted", "SignatureDoesNotMatch"));

View Full Code Here

  private static SshjSshClient getSSHClient(String host, String privateKey) {
    final LoginCredentials credential = LoginCredentials
        .fromCredentials(new Credentials("ubuntu", privateKey));
    final HostAndPort socket = HostAndPort.fromParts(host, 22);
    final SshjSshClient client = new SshjSshClient(
        new BackoffLimitedRetryHandler(), socket, credential, 5000);
    return client;
  }

View Full Code Here

      RetryablePredicate<IPSocket> socketOpen = new RetryablePredicate<IPSocket>(new InetSocketAddressConnect(), 180,
               5, TimeUnit.SECONDS);


      socketOpen.apply(socket);


      SshClient ssh = new SshjSshClient(new BackoffLimitedRetryHandler(), socket, 60000, credentials.identity, null,
               credentials.credential.getBytes());
      try {
         ssh.connect();
         ExecResponse hello = ssh.exec("echo hello");
         assertEquals(hello.getOutput().trim(), "hello");

View Full Code Here

public class AWSClientErrorRetryHandlerTest {
   @Test
   public void test401DoesNotRetry() {


      AWSUtils utils = createMock(AWSUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);


      replay(utils, backoffLimitedRetryHandler, command);


      AWSClientErrorRetryHandler retry = new AWSClientErrorRetryHandler(utils, backoffLimitedRetryHandler,

View Full Code Here


   @Test(dataProvider = "codes")
   public void test409DoesBackoffAndRetryForCode(String code) {


      AWSUtils utils = createMock(AWSUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);


      HttpRequest putBucket = HttpRequest.builder().method(PUT)
            .endpoint("https://adriancole-blobstore113.s3.amazonaws.com/").build();


      HttpResponse operationAborted = HttpResponse.builder().statusCode(CONFLICT.getStatusCode())
            .payload(Payloads.newStringPayload(String.format("<Error><Code>%s</Code></Error>", code))).build();


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


      AWSError error = new AWSError();
      error.setCode(code);


      expect(utils.parseAWSErrorFromContent(putBucket, operationAborted)).andReturn(error);


      expect(backoffLimitedRetryHandler.shouldRetryRequest(command, operationAborted)).andReturn(Boolean.TRUE);


      replay(utils, backoffLimitedRetryHandler, command);


      AWSClientErrorRetryHandler retry = new AWSClientErrorRetryHandler(utils, backoffLimitedRetryHandler,
            ImmutableSet.<String> of("RequestTimeout", "OperationAborted", "SignatureDoesNotMatch"));

View Full Code Here

         "</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();

View Full Code Here

   }


   @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);

View Full Code Here


   @Test(dataProvider = "codes")
   public void test409DoesBackoffAndRetryForCode(String code) {


      AWSUtils utils = createMock(AWSUtils.class);
      BackoffLimitedRetryHandler backoffLimitedRetryHandler = createMock(BackoffLimitedRetryHandler.class);
      HttpCommand command = createMock(HttpCommand.class);


      HttpRequest putBucket = HttpRequest.builder().method(PUT)
            .endpoint("https://adriancole-blobstore113.s3.amazonaws.com/").build();


      HttpResponse operationAborted = HttpResponse.builder().statusCode(CONFLICT.getStatusCode())
            .payload(Payloads.newStringPayload(String.format("<Error><Code>%s</Code></Error>", code))).build();


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


      AWSError error = new AWSError();
      error.setCode(code);


      expect(utils.parseAWSErrorFromContent(putBucket, operationAborted)).andReturn(error);


      expect(backoffLimitedRetryHandler.shouldRetryRequest(command, operationAborted)).andReturn(Boolean.TRUE);


      replay(utils, backoffLimitedRetryHandler, command);


      AWSClientErrorRetryHandler retry = new AWSClientErrorRetryHandler(utils, backoffLimitedRetryHandler,
            ImmutableSet.<String> of("RequestTimeout", "OperationAborted", "SignatureDoesNotMatch"));

View Full Code Here

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