Example usage for org.apache.http.client.methods CloseableHttpResponse setEntity

Introduction

In this page you can find the example usage for org.apache.http.client.methods CloseableHttpResponse setEntity.

Prototype

void setEntity(HttpEntity httpEntity);

Source Link

Usage

From source file:org.esigate.Driver.java

/**
 * Perform rendering on a single url content, and append result to "writer". Automatically follows redirects
 * //from   ww  w  . j  av  a  2s .c  om
 * @param pageUrl
 *            Address of the page containing the template
 * @param incomingRequest
 *            originating request object
 * @param renderers
 *            the renderers to use in order to transform the output
 * @return The resulting response
 * @throws IOException
 *             If an IOException occurs while writing to the writer
 * @throws HttpErrorPage
 *             If an Exception occurs while retrieving the template
 */
public CloseableHttpResponse render(String pageUrl, IncomingRequest incomingRequest, Renderer... renderers)
        throws IOException, HttpErrorPage {
    DriverRequest driverRequest = new DriverRequest(incomingRequest, this, pageUrl);

    // Replace ESI variables in URL
    // TODO: should be performed in the ESI extension
    String resultingPageUrl = VariablesResolver.replaceAllVariables(pageUrl, driverRequest);

    String targetUrl = ResourceUtils.getHttpUrlWithQueryString(resultingPageUrl, driverRequest, false);

    String currentValue;
    CloseableHttpResponse response;

    // Retrieve URL
    // Get from cache to prevent multiple request to the same url if
    // multiple fragments are used.

    String cacheKey = CACHE_RESPONSE_PREFIX + targetUrl;
    Pair<String, CloseableHttpResponse> cachedValue = incomingRequest.getAttribute(cacheKey);
    // content and response were not in cache
    if (cachedValue == null) {
        OutgoingRequest outgoingRequest = requestExecutor.createOutgoingRequest(driverRequest, targetUrl,
                false);
        headerManager.copyHeaders(driverRequest, outgoingRequest);
        response = requestExecutor.execute(outgoingRequest);
        int redirects = MAX_REDIRECTS;
        try {
            while (redirects > 0
                    && redirectStrategy.isRedirected(outgoingRequest, response, outgoingRequest.getContext())) {
                redirects--;
                outgoingRequest = requestExecutor.createOutgoingRequest(driverRequest, redirectStrategy
                        .getLocationURI(outgoingRequest, response, outgoingRequest.getContext()).toString(),
                        false);
                headerManager.copyHeaders(driverRequest, outgoingRequest);
                response = requestExecutor.execute(outgoingRequest);
            }
        } catch (ProtocolException e) {
            throw new HttpErrorPage(HttpStatus.SC_BAD_GATEWAY, "Invalid response from server", e);
        }
        response = headerManager.copyHeaders(outgoingRequest, incomingRequest, response);
        currentValue = HttpResponseUtils.toString(response, this.eventManager);
        // Cache
        cachedValue = new ImmutablePair<String, CloseableHttpResponse>(currentValue, response);
        incomingRequest.setAttribute(cacheKey, cachedValue);
    }
    currentValue = cachedValue.getKey();
    response = cachedValue.getValue();

    logAction("render", pageUrl, renderers);

    // Apply renderers
    currentValue = performRendering(pageUrl, driverRequest, response, currentValue, renderers);

    response.setEntity(new StringEntity(currentValue, HttpResponseUtils.getContentType(response)));

    return response;
}