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added option to overide MQTT retain (e.g. in shower time and heartbeat messages)

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This commit is contained in:
proddy
2019-10-19 09:35:37 +02:00
parent 0ac4ad3f37
commit 00e707ee21
3 changed files with 14 additions and 6 deletions
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14
src/MyESP.cpp
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@@ -397,12 +397,18 @@ void MyESP::mqttUnsubscribe(const char * topic) {
}
}
// Publish using the user's custom retain flag
bool MyESP::mqttPublish(const char * topic, const char * payload) {
// use the custom MQTT retain flag
return mqttPublish(topic, payload, _mqtt_retain);
}
// MQTT Publish
// returns true if all good
bool MyESP::mqttPublish(const char * topic, const char * payload) {
bool MyESP::mqttPublish(const char * topic, const char * payload, bool retain) {
if (mqttClient.connected() && (strlen(topic) > 0)) {
//myDebug_P(PSTR("[MQTT] Sending publish to %s with payload %s"), _mqttTopic(topic), payload); // for debugging
uint16_t packet_id = mqttClient.publish(_mqttTopic(topic), _mqtt_qos, _mqtt_retain, payload);
uint16_t packet_id = mqttClient.publish(_mqttTopic(topic), _mqtt_qos, retain, payload);
if (packet_id) {
_addMQTTLog(topic, payload, 1); // add to the log, using type of 1 for Publish
@@ -423,7 +429,7 @@ void MyESP::_mqttOnConnect() {
_mqtt_last_connection = millis();
// say we're alive to the Last Will topic
mqttClient.publish(_mqttTopic(_mqtt_will_topic), 1, true, _mqtt_will_online_payload); // qos=1, retain=true
mqttPublish(_mqtt_will_topic, _mqtt_will_online_payload, true); // force retain on
// subscribe to general subs
mqttSubscribe(MQTT_TOPIC_RESTART);
@@ -1365,7 +1371,7 @@ void MyESP::_heartbeatCheck(bool force = false) {
strlcat(payload, itoa(mem_available, s, 10), sizeof(payload)); // free mem as a %
strlcat(payload, "%", sizeof(payload));
mqttPublish(MQTT_TOPIC_HEARTBEAT, payload); // send to MQTT
mqttPublish(MQTT_TOPIC_HEARTBEAT, payload, false); // send to MQTT with retain off
}
}

3
src/MyESP.h
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@@ -9,7 +9,7 @@
#ifndef MyESP_h
#define MyESP_h
#define MYESP_VERSION "1.2.11"
#define MYESP_VERSION "1.2.12"
#include <ArduinoJson.h>
#include <ArduinoOTA.h>
@@ -275,6 +275,7 @@ class MyESP {
bool mqttSubscribe(const char * topic);
void mqttUnsubscribe(const char * topic);
bool mqttPublish(const char * topic, const char * payload);
bool mqttPublish(const char * topic, const char * payload, bool retain);
void setMQTT(mqtt_callback_f callback);
// OTA

3
src/ems-esp.cpp
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@@ -1076,7 +1076,8 @@ bool do_publishShowerData() {
myDebugLog("Publishing shower data via MQTT");
return (myESP.mqttPublish(TOPIC_SHOWER_DATA, data));
// Publish MQTT forcing retain to be off
return (myESP.mqttPublish(TOPIC_SHOWER_DATA, data, false));
}
// callback for custom settings when showing Stored Settings with the 'set' command