Ejemplo n.º 1
0
Handler::status_e RestBatchHandler::execute() {
  // extract the request type
  const HttpRequest::HttpRequestType type = _request->requestType();
  
  if (type != HttpRequest::HTTP_REQUEST_POST && type != HttpRequest::HTTP_REQUEST_PUT) {
    generateError(HttpResponse::METHOD_NOT_ALLOWED, TRI_ERROR_HTTP_METHOD_NOT_ALLOWED);

    return Handler::HANDLER_DONE;
  }

  string boundary;
  if (! getBoundary(&boundary)) {
    // invalid content-type or boundary sent
    generateError(HttpResponse::BAD, TRI_ERROR_HTTP_BAD_PARAMETER, "invalid content-type or boundary received");

    return Handler::HANDLER_FAILED;
  }

  size_t errors = 0;

  // get authorization header. we will inject this into the subparts
  string authorization = _request->header("authorization");

  // create the response 
  _response = createResponse(HttpResponse::OK);
  _response->setContentType(_request->header("content-type"));

  // setup some auxiliary structures to parse the multipart message
  MultipartMessage message(boundary.c_str(), boundary.size(), _request->body(), _request->body() + _request->bodySize());

  SearchHelper helper;
  helper.message = &message;
  helper.searchStart = (char*) message.messageStart;

  // iterate over all parts of the multipart message
  while (true) {
    // get the next part from the multipart message
    if (! extractPart(&helper)) {
      // error
      generateError(HttpResponse::BAD, TRI_ERROR_HTTP_BAD_PARAMETER, "invalid multipart message received");
      LOGGER_WARNING << "received a corrupted multipart message";

      return Handler::HANDLER_FAILED;
    }

    // split part into header & body
    const char* partStart = helper.foundStart;
    const char* partEnd = partStart + helper.foundLength;
    const size_t partLength = helper.foundLength;

    const char* headerStart = partStart;
    char* bodyStart = NULL;
    size_t headerLength = 0;
    size_t bodyLength = 0;

    // assume Windows linebreak \r\n\r\n as delimiter
    char* p = strstr((char*) headerStart, "\r\n\r\n");
    if (p != NULL) {
      headerLength = p - partStart;
      bodyStart = p + 4;
      bodyLength = partEnd - bodyStart;
    }
    else {
      // test Unix linebreak
      p = strstr((char*) headerStart, "\n\n");
      if (p != NULL) {
        headerLength = p - partStart;
        bodyStart = p + 2;
        bodyLength = partEnd - bodyStart;
      }
      else {
        // no delimiter found, assume we have only a header
        headerLength = partLength;
      }
    }
   
    // set up request object for the part
    LOGGER_TRACE << "part header is " << string(headerStart, headerLength); 
    HttpRequest* request = new HttpRequest(headerStart, headerLength);
    if (bodyLength > 0) {
      LOGGER_TRACE << "part body is " << string(bodyStart, bodyLength);
      request->setBody(bodyStart, bodyLength);
    }

    if (authorization.size()) {
      // inject Authorization header of multipart message into part message
      request->setHeader("authorization", 13, authorization.c_str());
    }

    
    HttpHandler* handler = _server->createHandler(request);
    if (! handler) {
      delete request;

      generateError(HttpResponse::BAD, TRI_ERROR_INTERNAL, "could not create handler for batch part processing");

      return Handler::HANDLER_FAILED;
    }

    Handler::status_e status = Handler::HANDLER_FAILED;
    do {
      try {
        status = handler->execute();
      }
      catch (triagens::basics::TriagensError const& ex) {
        handler->handleError(ex);
      }
      catch (std::exception const& ex) {
        triagens::basics::InternalError err(ex, __FILE__, __LINE__);

        handler->handleError(err);
      }
      catch (...) {
        triagens::basics::InternalError err("executeDirectHandler", __FILE__, __LINE__);
        handler->handleError(err);
      }
    }
    while (status == Handler::HANDLER_REQUEUE);
    
    
    if (status == Handler::HANDLER_FAILED) {
      // one of the handlers failed, we must exit now
      delete handler;
      generateError(HttpResponse::BAD, TRI_ERROR_INTERNAL, "executing a handler for batch part failed");

      return Handler::HANDLER_FAILED; 
    }

    HttpResponse* partResponse = handler->getResponse(); 
    if (partResponse == 0) {
      delete handler;
      generateError(HttpResponse::BAD, TRI_ERROR_INTERNAL, "could not create a response for batch part request");

      return Handler::HANDLER_FAILED;
    }

    const HttpResponse::HttpResponseCode code = partResponse->responseCode();
    if (code >= 400) {
      // error
      ++errors;
    }

    // append the boundary for this subpart
    _response->body().appendText(boundary + "\r\nContent-Type: ");
    _response->body().appendText(_partContentType);

    if (helper.contentId != 0) {
      // append content-id
      _response->body().appendText("\r\nContent-Id: " + string(helper.contentId, helper.contentIdLength));
    }

    _response->body().appendText("\r\n\r\n", 4);

    // remove some headers we don't need
    partResponse->setHeader("connection", 10, "");
    partResponse->setHeader("server", 6, "");

    // append the part response header
    partResponse->writeHeader(&_response->body());
    // append the part response body
    _response->body().appendText(partResponse->body());
    _response->body().appendText("\r\n", 2);

    delete handler;


    if (! helper.containsMore) {
      // we've read the last part
      break;
    }
  } // next part

  // append final boundary + "--"
  _response->body().appendText(boundary + "--");

  if (errors > 0) {
    _response->setHeader(HttpResponse::getBatchErrorHeader(), StringUtils::itoa(errors)); 
  }

  // success
  return Handler::HANDLER_DONE;
}
Ejemplo n.º 2
0
HttpHandler::status_t RestBatchHandler::execute () {
  // extract the request type
  const HttpRequest::HttpRequestType type = _request->requestType();

  if (type != HttpRequest::HTTP_REQUEST_POST && type != HttpRequest::HTTP_REQUEST_PUT) {
    generateError(HttpResponse::METHOD_NOT_ALLOWED, TRI_ERROR_HTTP_METHOD_NOT_ALLOWED);
    return status_t(HttpHandler::HANDLER_DONE);
  }

  string boundary;

  // invalid content-type or boundary sent
  if (! getBoundary(&boundary)) {
    generateError(HttpResponse::BAD, TRI_ERROR_HTTP_BAD_PARAMETER, "invalid content-type or boundary received");
    return status_t(HttpHandler::HANDLER_FAILED);
  }

  LOG_TRACE("boundary of multipart-message is '%s'", boundary.c_str());

  size_t errors = 0;

  // get authorization header. we will inject this into the subparts
  string authorization = _request->header("authorization");

  // create the response
  _response = createResponse(HttpResponse::OK);
  _response->setContentType(_request->header("content-type"));

  // setup some auxiliary structures to parse the multipart message
  MultipartMessage message(boundary.c_str(),
                           boundary.size(),
                           _request->body(),
                           _request->body() + _request->bodySize());

  SearchHelper helper;
  helper.message = &message;
  helper.searchStart = (char*) message.messageStart;

  // iterate over all parts of the multipart message
  while (true) {
    // get the next part from the multipart message
    if (! extractPart(&helper)) {
      // error
      generateError(HttpResponse::BAD, TRI_ERROR_HTTP_BAD_PARAMETER, "invalid multipart message received");
      LOG_WARNING("received a corrupted multipart message");

      return status_t(HttpHandler::HANDLER_FAILED);
    }

    // split part into header & body
    const char* partStart = helper.foundStart;
    const char* partEnd = partStart + helper.foundLength;
    const size_t partLength = helper.foundLength;

    const char* headerStart = partStart;
    char* bodyStart = nullptr;
    size_t headerLength = 0;
    size_t bodyLength = 0;

    // assume Windows linebreak \r\n\r\n as delimiter
    char* p = strstr((char*) headerStart, "\r\n\r\n");

    if (p != nullptr && p + 4 <= partEnd) {
      headerLength = p - partStart;
      bodyStart = p + 4;
      bodyLength = partEnd - bodyStart;
    }
    else {
      // test Unix linebreak
      p = strstr((char*) headerStart, "\n\n");

      if (p != nullptr && p + 2 <= partEnd) {
        headerLength = p - partStart;
        bodyStart = p + 2;
        bodyLength = partEnd - bodyStart;
      }
      else {
        // no delimiter found, assume we have only a header
        headerLength = partLength;
      }
    }

    // set up request object for the part
    LOG_TRACE("part header is: %s", string(headerStart, headerLength).c_str());
    HttpRequest* request = new HttpRequest(_request->connectionInfo(), headerStart, headerLength, _request->compatibility(), false);

    if (request == nullptr) {
      generateError(HttpResponse::SERVER_ERROR, TRI_ERROR_OUT_OF_MEMORY);

      return status_t(HttpHandler::HANDLER_FAILED);
    }

    // we do not have a client task id here
    request->setClientTaskId(0);

    // inject the request context from the framing (batch) request
    // the "false" means the context is not responsible for resource handling
    request->setRequestContext(_request->getRequestContext(), false);
    request->setDatabaseName(_request->databaseName());

    if (bodyLength > 0) {
      LOG_TRACE("part body is '%s'", string(bodyStart, bodyLength).c_str());
      request->setBody(bodyStart, bodyLength);
    }

    if (authorization.size()) {
      // inject Authorization header of multipart message into part message
      request->setHeader("authorization", 13, authorization.c_str());
    }

    HttpHandler* handler = _server->createHandler(request);

    if (! handler) {
      delete request;

      generateError(HttpResponse::BAD, TRI_ERROR_INTERNAL, "could not create handler for batch part processing");

      return status_t(HttpHandler::HANDLER_FAILED);
    }

    HttpHandler::status_t status(HttpHandler::HANDLER_FAILED);

    do {
      handler->prepareExecute();
      try {
        status = handler->execute();
      }
      catch (triagens::basics::Exception const& ex) {
        handler->handleError(ex);
      }
      catch (std::exception const& ex) {
        triagens::basics::Exception err(TRI_ERROR_INTERNAL, ex.what(), __FILE__, __LINE__);
        handler->handleError(err);
      }
      catch (...) {
        triagens::basics::Exception err(TRI_ERROR_INTERNAL, __FILE__, __LINE__);
        handler->handleError(err);
      }
      handler->finalizeExecute();
    }
    while (status.status == HttpHandler::HANDLER_REQUEUE);


    if (status.status == HttpHandler::HANDLER_FAILED) {
      // one of the handlers failed, we must exit now
      delete handler;
      generateError(HttpResponse::BAD, TRI_ERROR_INTERNAL, "executing a handler for batch part failed");

      return status_t(HttpHandler::HANDLER_FAILED);
    }

    HttpResponse* partResponse = handler->getResponse();

    if (partResponse == nullptr) {
      delete handler;
      generateError(HttpResponse::BAD, TRI_ERROR_INTERNAL, "could not create a response for batch part request");

      return status_t(HttpHandler::HANDLER_FAILED);
    }

    const HttpResponse::HttpResponseCode code = partResponse->responseCode();

    if (code >= 400) {
      // error
      ++errors;
    }

    // append the boundary for this subpart
    _response->body().appendText(boundary + "\r\nContent-Type: ");
    _response->body().appendText(triagens::rest::HttpRequest::BatchContentType);

    if (helper.contentId != 0) {
      // append content-id
      _response->body().appendText("\r\nContent-Id: " + string(helper.contentId, helper.contentIdLength));
    }

    _response->body().appendText(TRI_CHAR_LENGTH_PAIR("\r\n\r\n"));

    // remove some headers we don't need
    partResponse->setHeader(TRI_CHAR_LENGTH_PAIR("connection"), "");
    partResponse->setHeader(TRI_CHAR_LENGTH_PAIR("server"), "");

    // append the part response header
    partResponse->writeHeader(&_response->body());
    // append the part response body
    _response->body().appendText(partResponse->body());
    _response->body().appendText(TRI_CHAR_LENGTH_PAIR("\r\n"));

    delete handler;


    if (! helper.containsMore) {
      // we've read the last part
      break;
    }
  } // next part

  // append final boundary + "--"
  _response->body().appendText(boundary + "--");

  if (errors > 0) {
    _response->setHeader(HttpResponse::BatchErrorHeader, StringUtils::itoa(errors));
  }

  // success
  return status_t(HttpHandler::HANDLER_DONE);
}