/**
* Relational pipes
* Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <locale>
#include <codecvt>
#include <relpipe/common/type/typedefs.h>
#include <relpipe/reader/TypeId.h>
#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
#include <relpipe/reader/handlers/AttributeMetadata.h>
#include "AMQP.h"
#include "Configuration.h"
#include "Hex.h"
namespace relpipe {
namespace out {
namespace amqp {
class AMQPHandler : public relpipe::reader::handlers::RelationalReaderStringHandler {
private:
std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
Configuration configuration;
shared_ptr<AMQP> mq;
struct CurrentRelation {
relpipe::common::type::StringX name;
std::vector<relpipe::reader::handlers::AttributeMetadata> attributes;
relpipe::common::type::Integer attributeIndex = 0;
std::string currentValue;
} currentRelation;
public:
AMQPHandler(Configuration configuration) : configuration(configuration) {
// TODO: do not throw exception from the constructor: AMQP::open()
mq.reset(AMQP::open(convertor.to_bytes(configuration.queue), configuration.unlinkOnClose));
}
void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {
currentRelation = CurrentRelation{name, attributes};
}
void attribute(const relpipe::common::type::StringX& value) override {
auto attributeName = currentRelation.attributes[currentRelation.attributeIndex].getAttributeName();
if (attributeName == L"text" && value.size()) currentRelation.currentValue = convertor.to_bytes(value);
else if (attributeName == L"data" && value.size()) currentRelation.currentValue = Hex::fromHex(value).str();
else if (attributeName == L"text"); // keep empty or value from 'data'
else if (attributeName == L"data"); // keep empty or value from 'text'
currentRelation.attributeIndex++;
if (currentRelation.attributeIndex == currentRelation.attributes.size()) {
currentRelation.attributeIndex = 0;
mq->send(currentRelation.currentValue);
}
}
void endOfPipe() {
}
};
}
}
}