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arangodb/arangod/RestHandler/RestBatchHandler.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Jan Steemann
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGOD_REST_HANDLER_REST_BATCH_HANDLER_H
#define ARANGOD_REST_HANDLER_REST_BATCH_HANDLER_H 1
#include "Basics/Common.h"
#include "RestHandler/RestVocbaseBaseHandler.h"
namespace arangodb {
// container for complete multipart message
struct MultipartMessage {
MultipartMessage(char const* boundary, size_t const boundaryLength,
char const* messageStart, char const* messageEnd)
: boundary(boundary),
boundaryLength(boundaryLength),
messageStart(messageStart),
messageEnd(messageEnd) {}
MultipartMessage() : MultipartMessage("", 0, "", "") {}
char const* boundary;
size_t boundaryLength;
char const* messageStart;
char const* messageEnd;
};
// container for search data within multipart message
struct SearchHelper {
MultipartMessage message;
char const* searchStart;
char const* foundStart;
size_t foundLength;
char const* contentId;
size_t contentIdLength;
bool containsMore;
};
class RestBatchHandler : public RestVocbaseBaseHandler {
public:
RestBatchHandler(GeneralRequest*, GeneralResponse*);
~RestBatchHandler();
public:
RestStatus execute() override;
char const* name() const override final { return "RestBatchHandler"; }
// be pessimistic about what this handler does... it may invoke V8
// or not, but as we don't know where, we need to assume it
RequestLane lane() const override final { return RequestLane::CLIENT_FAST; }
private:
RestStatus executeHttp();
RestStatus executeVst();
// extract the boundary from the body of a multipart message
bool getBoundaryBody(std::string&);
// extract the boundary from the HTTP header of a multipart message
bool getBoundaryHeader(std::string&);
// extract the boundary of a multipart message
bool getBoundary(std::string&);
// extract the next part from a multipart message
bool extractPart(SearchHelper&);
private:
bool executeNextHandler();
void processSubHandlerResult(RestHandler const& handler);
MultipartMessage _multipartMessage;
SearchHelper _helper;
size_t _errors;
std::string _boundary;
};
} // namespace arangodb
#endif