private HttpUriRequest newHcRequest(HttpRequest request) throws IOException {
    URI uri = request.getUri().toJavaUri();
    HttpUriRequest httpUriRequest = HttpMethod.valueOf(request.getMethod()).newMessage(uri);

    for (Map.Entry<String, List<String>> entry : request.getHeaders().entrySet()) {
      httpUriRequest.addHeader(entry.getKey(), StringUtils.join(entry.getValue(), ','));
    }
    return httpUriRequest;
  }
示例#2
0
  public HttpResponse fetch(org.apache.shindig.gadgets.http.HttpRequest request)
      throws GadgetException {
    HttpUriRequest httpMethod = null;
    Preconditions.checkNotNull(request);
    final String methodType = request.getMethod();

    final org.apache.http.HttpResponse response;
    final long started = System.currentTimeMillis();

    // Break the request Uri to its components:
    Uri uri = request.getUri();
    if (StringUtils.isEmpty(uri.getAuthority())) {
      throw new GadgetException(
          GadgetException.Code.INVALID_USER_DATA,
          "Missing domain name for request: " + uri,
          HttpServletResponse.SC_BAD_REQUEST);
    }
    if (StringUtils.isEmpty(uri.getScheme())) {
      throw new GadgetException(
          GadgetException.Code.INVALID_USER_DATA,
          "Missing schema for request: " + uri,
          HttpServletResponse.SC_BAD_REQUEST);
    }
    String[] hostparts = StringUtils.splitPreserveAllTokens(uri.getAuthority(), ':');
    int port = -1; // default port
    if (hostparts.length > 2) {
      throw new GadgetException(
          GadgetException.Code.INVALID_USER_DATA,
          "Bad host name in request: " + uri.getAuthority(),
          HttpServletResponse.SC_BAD_REQUEST);
    }
    if (hostparts.length == 2) {
      try {
        port = Integer.parseInt(hostparts[1]);
      } catch (NumberFormatException e) {
        throw new GadgetException(
            GadgetException.Code.INVALID_USER_DATA,
            "Bad port number in request: " + uri.getAuthority(),
            HttpServletResponse.SC_BAD_REQUEST);
      }
    }

    String requestUri = uri.getPath();
    // Treat path as / if set as null.
    if (uri.getPath() == null) {
      requestUri = "/";
    }
    if (uri.getQuery() != null) {
      requestUri += '?' + uri.getQuery();
    }

    // Get the http host to connect to.
    HttpHost host = new HttpHost(hostparts[0], port, uri.getScheme());

    try {
      if ("POST".equals(methodType) || "PUT".equals(methodType)) {
        HttpEntityEnclosingRequestBase enclosingMethod =
            ("POST".equals(methodType)) ? new HttpPost(requestUri) : new HttpPut(requestUri);

        if (request.getPostBodyLength() > 0) {
          enclosingMethod.setEntity(
              new InputStreamEntity(request.getPostBody(), request.getPostBodyLength()));
        }
        httpMethod = enclosingMethod;
      } else if ("GET".equals(methodType)) {
        httpMethod = new HttpGet(requestUri);
      } else if ("HEAD".equals(methodType)) {
        httpMethod = new HttpHead(requestUri);
      } else if ("DELETE".equals(methodType)) {
        httpMethod = new HttpDelete(requestUri);
      }
      for (Map.Entry<String, List<String>> entry : request.getHeaders().entrySet()) {
        httpMethod.addHeader(entry.getKey(), StringUtils.join(entry.getValue(), ','));
      }

      // Disable following redirects.
      if (!request.getFollowRedirects()) {
        httpMethod.getParams().setBooleanParameter(ClientPNames.HANDLE_REDIRECTS, false);
      }

      // HttpClient doesn't handle all cases when breaking url (specifically '_' in domain)
      // So lets pass it the url parsed:
      response = FETCHER.execute(host, httpMethod);

      if (response == null) {
        throw new IOException("Unknown problem with request");
      }

      long now = System.currentTimeMillis();
      if (now - started > slowResponseWarning) {
        slowResponseWarning(request, started, now);
      }

      return makeResponse(response);

    } catch (Exception e) {
      long now = System.currentTimeMillis();

      // Find timeout exceptions, respond accordingly
      if (TIMEOUT_EXCEPTIONS.contains(e.getClass())) {
        LOG.info(
            "Timeout for "
                + request.getUri()
                + " Exception: "
                + e.getClass().getName()
                + " - "
                + e.getMessage()
                + " - "
                + (now - started)
                + "ms");
        return HttpResponse.timeout();
      }

      LOG.log(
          Level.INFO,
          "Got Exception fetching " + request.getUri() + " - " + (now - started) + "ms",
          e);

      // Separate shindig error from external error
      throw new GadgetException(
          GadgetException.Code.INTERNAL_SERVER_ERROR,
          e,
          HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    } finally {
      // cleanup any outstanding resources..
      if (httpMethod != null)
        try {
          httpMethod.abort();
        } catch (UnsupportedOperationException e) {
          // ignore
        }
    }
  }