mirror of https://gitee.com/bigwinds/arangodb
130 lines
3.6 KiB
C++
130 lines
3.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Christoph Uhde
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_REST_VPP_MESSAGE_H
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#define ARANGODB_REST_VPP_MESSAGE_H 1
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#include <velocypack/Buffer.h>
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#include <velocypack/Options.h>
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#include <velocypack/Slice.h>
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#include <velocypack/velocypack-aliases.h>
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#include <iterator>
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#include <vector>
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#include "Basics/StringBuffer.h"
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#include "Basics/VelocyPackHelper.h"
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namespace arangodb {
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namespace rest {
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struct VppInputMessage {
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VppInputMessage() : _buffer(), _id(0), _payloadAmount(0), _payload() {}
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// cppcheck-suppress *
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VppInputMessage(uint64_t id, VPackBuffer<uint8_t>&& buff,
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std::size_t amount = 1)
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: _buffer(std::move(buff)), _id(id), _payloadAmount(amount) {
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init();
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}
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// no copy
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VppInputMessage(VppInputMessage const& other) = delete;
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// just move
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VppInputMessage(VppInputMessage&& other) {
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if (this == &other) {
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return;
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}
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_buffer = std::move(other._buffer);
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_id = other._id;
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_payloadAmount = other._payloadAmount;
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init();
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}
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void set(uint64_t id, VPackBuffer<uint8_t>&& buff, std::size_t amount = 1) {
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_id = id;
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_buffer = buff;
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_payloadAmount = amount;
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init();
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}
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VPackSlice header() const { return _header; };
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VPackSlice payload() const {
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if (!_payload.empty()) {
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return _payload.front();
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}
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return VPackSlice::noneSlice();
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}
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std::vector<VPackSlice> const& payloads() const { return _payload; }
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private:
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VPackBuffer<uint8_t> _buffer;
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uint64_t _id; // id zero signals invalid state
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std::size_t _payloadAmount;
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VPackSlice _header;
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std::vector<VPackSlice> _payload;
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void init() {
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_header = VPackSlice(_buffer.data());
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std::size_t offset = _header.byteSize();
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for (std::size_t sliceNum = 0; sliceNum < _payloadAmount; ++sliceNum) {
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_payload.emplace_back(_buffer.data() + offset);
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offset += _payload.back().byteSize();
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}
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}
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};
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struct VPackMessageNoOwnBuffer {
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// cppcheck-suppress *
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VPackMessageNoOwnBuffer(VPackSlice head, std::vector<VPackSlice>&& payloads,
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uint64_t id, bool generateBody = true)
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: _header(head),
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_payloads(std::move(payloads)),
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_id(id),
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_generateBody(generateBody) {}
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VPackMessageNoOwnBuffer(VPackSlice head, VPackSlice payload, uint64_t id,
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bool generateBody = true)
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: _header(head), _payloads(), _id(id), _generateBody(generateBody) {
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_payloads.push_back(payload);
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}
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VPackSlice firstPayload() {
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if (_payloads.size() && _generateBody) {
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return _payloads.front();
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}
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return VPackSlice::noneSlice();
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}
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std::vector<VPackSlice> payloads() { return _payloads; }
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VPackSlice _header;
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std::vector<VPackSlice> _payloads;
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uint64_t _id;
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bool _generateBody;
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};
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}
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}
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#endif
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