Examples of com.google.api.client.http.BackOffPolicy

com.google.api.client.http.BackOffPolicy
{@link Beta}
Strategy interface to control back off between retry attempts. @since 1.7 @author Ravi Mistry @deprecated (scheduled to be removed in 1.17) Use {@link HttpBackOffUnsuccessfulResponseHandler}instead.

    BatchCallback<T, E> callback = requestInfo.callback;


    GoogleHeaders responseHeaders = new GoogleHeaders(response.getHeaders());
    HttpUnsuccessfulResponseHandler unsuccessfulResponseHandler =
        requestInfo.request.getUnsuccessfulResponseHandler();
    BackOffPolicy backOffPolicy = requestInfo.request.getBackOffPolicy();


    // Reset backOff flag.
    backOffRequired = false;


    if (HttpStatusCodes.isSuccess(statusCode)) {
      if (callback == null) {
        // No point in parsing if there is no callback.
        return;
      }
      T parsed = getParsedDataClass(
          requestInfo.dataClass, response, requestInfo, responseHeaders.getContentType());
      callback.onSuccess(parsed, responseHeaders);
    } else {
      HttpContent content = requestInfo.request.getContent();
      boolean retrySupported = retryAllowed && (content == null || content.retrySupported());
      boolean errorHandled = false;
      boolean redirectRequest = false;
      if (unsuccessfulResponseHandler != null) {
        errorHandled = unsuccessfulResponseHandler.handleResponse(
            requestInfo.request, response, retrySupported);
      }
      if (!errorHandled) {
        if (requestInfo.request.handleRedirect(response.getStatusCode(), response.getHeaders())) {
          redirectRequest = true;
        } else if (retrySupported && backOffPolicy != null
            && backOffPolicy.isBackOffRequired(response.getStatusCode())) {
          backOffRequired = true;
        }
      }
      if (retrySupported && (errorHandled || backOffRequired || redirectRequest)) {
        unsuccessfulRequestInfos.add(requestInfo);

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    Preconditions.checkState(!requestInfos.isEmpty());
    HttpRequest batchRequest = requestFactory.buildPostRequest(this.batchUrl, null);
    HttpExecuteInterceptor originalInterceptor = batchRequest.getInterceptor();
    batchRequest.setInterceptor(new BatchInterceptor(originalInterceptor));
    int retriesRemaining = batchRequest.getNumberOfRetries();
    BackOffPolicy backOffPolicy = batchRequest.getBackOffPolicy();


    if (backOffPolicy != null) {
      // Reset the BackOffPolicy at the start of each execute.
      backOffPolicy.reset();
    }


    do {
      retryAllowed = retriesRemaining > 0;
      batchRequest.setContent(new MultipartMixedContent(requestInfos, "__END_OF_PART__"));
      HttpResponse response = batchRequest.execute();
      BatchUnparsedResponse batchResponse;
      try {
        // Find the boundary from the Content-Type header.
        String boundary = "--" + response.getMediaType().getParameter("boundary");


        // Parse the content stream.
        InputStream contentStream = response.getContent();
        batchResponse =
            new BatchUnparsedResponse(contentStream, boundary, requestInfos, retryAllowed);


        while (batchResponse.hasNext) {
          batchResponse.parseNextResponse();
        }
      } finally {
        response.disconnect();
      }


      List<RequestInfo<?, ?>> unsuccessfulRequestInfos = batchResponse.unsuccessfulRequestInfos;
      if (!unsuccessfulRequestInfos.isEmpty()) {
        requestInfos = unsuccessfulRequestInfos;
        // backOff if required.
        if (batchResponse.backOffRequired && backOffPolicy != null) {
          long backOffTime = backOffPolicy.getNextBackOffMillis();
          if (backOffTime != BackOffPolicy.STOP) {
            sleep(backOffTime);
          }
        }
      } else {

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    BatchCallback<T, E> callback = requestInfo.callback;


    HttpHeaders responseHeaders = response.getHeaders();
    HttpUnsuccessfulResponseHandler unsuccessfulResponseHandler =
        requestInfo.request.getUnsuccessfulResponseHandler();
    BackOffPolicy backOffPolicy = requestInfo.request.getBackOffPolicy();


    // Reset backOff flag.
    backOffRequired = false;


    if (HttpStatusCodes.isSuccess(statusCode)) {
      if (callback == null) {
        // No point in parsing if there is no callback.
        return;
      }
      T parsed = getParsedDataClass(requestInfo.dataClass, response, requestInfo);
      callback.onSuccess(parsed, responseHeaders);
    } else {
      HttpContent content = requestInfo.request.getContent();
      boolean retrySupported = retryAllowed && (content == null || content.retrySupported());
      boolean errorHandled = false;
      boolean redirectRequest = false;
      if (unsuccessfulResponseHandler != null) {
        errorHandled = unsuccessfulResponseHandler.handleResponse(
            requestInfo.request, response, retrySupported);
      }
      if (!errorHandled) {
        if (requestInfo.request.handleRedirect(response.getStatusCode(), response.getHeaders())) {
          redirectRequest = true;
        } else if (retrySupported && backOffPolicy != null
            && backOffPolicy.isBackOffRequired(response.getStatusCode())) {
          backOffRequired = true;
        }
      }
      if (retrySupported && (errorHandled || backOffRequired || redirectRequest)) {
        unsuccessfulRequestInfos.add(requestInfo);

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Related Classes of com.google.api.client.http.BackOffPolicy

com.google.api.client.googleapis.batch.BatchRequest

com.google.api.client.googleapis.batch.BatchUnparsedResponse

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