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prevent duplicate MQTT connections

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This commit is contained in:
proddy
2020-11-15 14:25:17 +01:00
parent 8db542b117
commit 88135ad277
2 changed files with 17 additions and 8 deletions
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13
src/mqtt.cpp
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@@ -40,7 +40,7 @@ bool Mqtt::mqtt_enabled_;
std::vector<Mqtt::MQTTSubFunction> Mqtt::mqtt_subfunctions_;
uint16_t Mqtt::mqtt_publish_fails_ = 0;
// size_t Mqtt::maximum_mqtt_messages_ = Mqtt::MAX_MQTT_MESSAGES;
bool Mqtt::connecting_ = false;
uint16_t Mqtt::mqtt_message_id_ = 0;
std::list<Mqtt::QueuedMqttMessage> Mqtt::mqtt_messages_;
char will_topic_[Mqtt::MQTT_TOPIC_MAX_SIZE]; // because MQTT library keeps only char pointer
@@ -364,6 +364,7 @@ void Mqtt::start() {
mqttClient_->onConnect([this](bool sessionPresent) { on_connect(); });
mqttClient_->onDisconnect([this](AsyncMqttClientDisconnectReason reason) {
connecting_ = false;
if (reason == AsyncMqttClientDisconnectReason::TCP_DISCONNECTED) {
LOG_INFO(F("MQTT disconnected: TCP"));
}
@@ -463,6 +464,14 @@ void Mqtt::set_format(uint8_t mqtt_format) {
// MQTT onConnect - when a connect is established
void Mqtt::on_connect() {
if (connecting_) {
return;
}
connecting_ = true;
LOG_INFO(F("MQTT connected"));
// send info topic appended with the version information as JSON
StaticJsonDocument<90> doc;
doc["event"] = "start";
@@ -481,8 +490,6 @@ void Mqtt::on_connect() {
if (mqtt_format() == Format::HA) {
ha_status(); // create a device in HA
}
LOG_INFO(F("MQTT connected"));
}
// Home Assistant Discovery - the main master Device

8
src/mqtt.h
View File

@@ -85,6 +85,8 @@ class Mqtt {
static constexpr uint8_t MQTT_TOPIC_MAX_SIZE = 128; // note this should really match the user setting in mqttSettings.maxTopicLength
static void on_connect();
static void subscribe(const uint8_t device_type, const std::string & topic, mqtt_subfunction_p cb);
static void subscribe(const std::string & topic, mqtt_subfunction_p cb);
static void resubscribe();
@@ -112,7 +114,6 @@ class Mqtt {
static void show_topic_handlers(uuid::console::Shell & shell, const uint8_t device_type);
static void show_mqtt(uuid::console::Shell & shell);
static void on_connect();
static void ha_status();
void disconnect() {
@@ -189,8 +190,6 @@ class Mqtt {
void on_message(const char * topic, const char * payload, size_t len);
void process_queue();
static uint16_t mqtt_publish_fails_;
// function handlers for MQTT subscriptions
struct MQTTSubFunction {
uint8_t device_type_; // which device type, from DeviceType::
@@ -216,6 +215,9 @@ class Mqtt {
uint32_t last_publish_other_ = 0;
uint32_t last_publish_sensor_ = 0;
static bool connecting_;
static uint16_t mqtt_publish_fails_;
// settings, copied over
static std::string hostname_;
static uint8_t mqtt_qos_;