| author | František Kučera <franta-hg@frantovo.cz> |
| Sun, 08 May 2022 21:42:14 +0200 | |
| branch | v_0 |
| changeset 2 | 0799eaf338b9 |
| parent 1 | 4993a084b8ba |
| child 3 | 610783d70ae9 |
| permissions | -rw-r--r-- |
| 0 | 1 |
/** |
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* Relational pipes |
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* Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <cstdlib> |
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#include <vector> |
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#include <memory> |
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#include <locale> |
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#include <regex> |
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#include <algorithm> |
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#include <unistd.h> |
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#include <sstream> |
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#include <iomanip> |
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#include <random> |
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changeset
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#include <mosquittopp.h> |
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4993a084b8ba
link to mosquittopp library
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
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#include <relpipe/writer/RelationalWriter.h> |
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#include <relpipe/writer/RelpipeWriterException.h> |
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#include <relpipe/writer/AttributeMetadata.h> |
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#include <relpipe/writer/Factory.h> |
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#include <relpipe/writer/TypeId.h> |
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#include <relpipe/cli/CLI.h> |
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#include "MQTTCommand.h" |
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#include "Hex.h" |
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using namespace relpipe::cli; |
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using namespace relpipe::writer; |
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namespace relpipe {
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namespace in {
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namespace mqtt {
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class MQTTClient : public mosqpp::mosquittopp {
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private: |
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std::shared_ptr<writer::RelationalWriter> writer; |
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Configuration& configuration; |
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int messageCount = 0; |
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std::string clientId; |
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/** |
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* @return unique (random) client ID for MQTT to allow multiple simultaneous connections |
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*/ |
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static std::string generateClientID() {
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std::stringstream result; |
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// result << "relpipe-in-"; |
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std::string symbols("0123456789abcdef");
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std::random_device dev; |
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std::mt19937 rng(dev()); |
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std::uniform_int_distribution<std::mt19937::result_type> dist6(0, symbols.size()); |
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for (int i = 0; i < 8; i++) result << symbols[dist6(rng)]; |
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// std::cerr << "generated clien ID = " << result.str() << std::endl; |
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return result.str(); |
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} |
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public: |
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MQTTClient(std::shared_ptr<writer::RelationalWriter> writer, Configuration& configuration) : mosqpp::mosquittopp((generateClientID()).c_str()), writer(writer), configuration(configuration) {
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4993a084b8ba
link to mosquittopp library
František Kučera <franta-hg@frantovo.cz>
parents:
0
diff
changeset
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} |
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void on_message(const mosquitto_message* message) override {
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// std::cerr << "got MQTT message: length=" << message->payloadlen << std::endl; |
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std::string payload = std::string((const char*) message->payload, message->payloadlen); |
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writer->writeAttribute(configuration.stream); |
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writer->writeAttribute(Hex::toTxt(payload)); |
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writer->writeAttribute(Hex::toHex(payload)); |
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messageCount++; |
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} |
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int popMessageCount() {
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int count = messageCount; |
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messageCount = 0; |
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return count; |
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} |
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}; |
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void MQTTCommand::process(std::shared_ptr<writer::RelationalWriter> writer, Configuration& configuration) {
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std::shared_ptr<MQTTClient> mq = std::make_shared<MQTTClient>(writer, configuration); |
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writer->startRelation(configuration.relation,{
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{L"stream", TypeId::STRING},
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{L"text", TypeId::STRING},
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{L"data", TypeId::STRING}
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}, true); |
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mq->max_inflight_messages_set(1); |
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mq->connect("localhost", 1883);
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int mid; |
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mq->subscribe(&mid, convertor.to_bytes(configuration.stream).c_str()); |
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//for (int i = configuration.messageCount; continueProcessing && i > 0; i--) {
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for (int i = configuration.messageCount; continueProcessing && i > 0; i = i - mq->popMessageCount()) {
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// std::cerr << "loop(): i=" << i << std::endl; |
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//mq->loop(); |
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mq->loop(1000, 1); |
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//mq->loop(1000, -1); |
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//mq->loop_forever(); |
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//mq->loop_write(); |
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} |
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// FIXME: move do destructor |
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mq->disconnect(); |
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} |
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MQTTCommand::~MQTTCommand() {
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} |
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} |
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} |
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} |