static void publishTimerHandler
(
le_timer_Ref_t timer
)
{
if (!globals.connected)
{
LE_WARN("Not publishing because MQTT is not connected");
return;
}
std::ostringstream jsonStream;
jsonStream << "{";
auto it = globals.data.cbegin();
while (it != globals.data.cend())
{
jsonStream << escapeStringForJSON(it->first) << ":" << it->second.encodeAsJSON();
it++;
if (it != globals.data.cend())
{
jsonStream << ",";
}
}
jsonStream << "}";
std::string s = jsonStream.str();
LE_INFO("About to publish: %s", s.c_str());
mqtt_Publish(
globals.publishTopic.c_str(),
reinterpret_cast<const uint8_t*>(s.c_str()),
s.length());
}
std::string DataValue::encodeAsJSON(void) const
{
std::string json;
switch (this->type)
{
case DATAROUTER_BOOLEAN:
json = (this->value.b) ? "true" : "false";
break;
case DATAROUTER_INTEGER:
json = std::to_string(this->value.i);
break;
case DATAROUTER_FLOAT:
json = std::to_string(this->value.f);
break;
case DATAROUTER_STRING:
json = escapeStringForJSON(this->value.s);
break;
default:
LE_FATAL("Value has unknown type");
break;
}
return json;
}
void doubleQuoteStringForJSON(const String& str, StringBuilder* dst)
{
dst->append('"');
escapeStringForJSON(str, dst);
dst->append('"');
}
