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AI-on-the-edge-device/code/components/jomjol_mqtt/server_mqtt.cpp
CaCO3 2b0e0f7d4e MQTT improvements (#1302) 
* Update server_mqtt.cpp

* Update server_mqtt.cpp

* skipp all MQTT publishing until the next round if an error occures

* improve logging

* only use group for uid and topic if there is more than one number

* .

* .
2022-11-09 18:25:24 +01:00

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#include <string>
#include <sstream>
#include <iomanip>
#include <vector>
#include "esp_log.h"
#include "ClassLogFile.h"
#include "connect_wlan.h"
#include "server_mqtt.h"
#include "interface_mqtt.h"
#include "time_sntp.h"
static const char *TAG = "MQTT SERVER";
extern const char* libfive_git_version(void);
extern const char* libfive_git_revision(void);
extern const char* libfive_git_branch(void);
std::vector<NumberPost*>* NUMBERS;
bool HomeassistantDiscovery = false;
std::string meterType = "";
std::string valueUnit = "";
std::string timeUnit = "";
std::string rateUnit = "Unit/Minute";
float roundInterval; // Minutes
int keepAlive = 0; // Seconds
int retainFlag;
static std::string maintopic;
void mqttServer_setParameter(std::vector<NumberPost*>* _NUMBERS, int _keepAlive, float _roundInterval) {
NUMBERS = _NUMBERS;
keepAlive = _keepAlive;
roundInterval = _roundInterval;
}
void mqttServer_setMeterType(std::string _meterType, std::string _valueUnit, std::string _timeUnit,std::string _rateUnit) {
meterType = _meterType;
valueUnit = _valueUnit;
timeUnit = _timeUnit;
rateUnit = _rateUnit;
}
void sendHomeAssistantDiscoveryTopic(std::string group, std::string field,
std::string name, std::string icon, std::string unit, std::string deviceClass, std::string stateClass, std::string entityCategory) {
std::string version = std::string(libfive_git_version());
if (version == "") {
version = std::string(libfive_git_branch()) + " (" + std::string(libfive_git_revision()) + ")";
}
std::string topicFull;
std::string configTopic;
std::string payload;
std::string nl = "\n";
configTopic = field;
if (group != "" && (*NUMBERS).size() > 1) { // There is more than one meter, prepend the group so we can differentiate them
configTopic = group + "_" + field;
name = group + " " + name;
}
if (field == "problem") { // Special binary sensor which is based on error topic
topicFull = "homeassistant/binary_sensor/" + maintopic + "/" + configTopic + "/config";
}
else {
topicFull = "homeassistant/sensor/" + maintopic + "/" + configTopic + "/config";
}
/* See https://www.home-assistant.io/docs/mqtt/discovery/ */
payload = "{" + nl +
"\"~\": \"" + maintopic + "\"," + nl +
"\"unique_id\": \"" + maintopic + "-" + configTopic + "\"," + nl +
"\"object_id\": \"" + maintopic + "_" + configTopic + "\"," + nl + // This used to generate the Entity ID
"\"name\": \"" + name + "\"," + nl +
"\"icon\": \"mdi:" + icon + "\"," + nl;
if (group != "") {
if (field == "problem") { // Special binary sensor which is based on error topic
payload += "\"state_topic\": \"~/" + group + "/error\"," + nl;
payload += "\"value_template\": \"{{ 'OFF' if 'no error' in value else 'ON'}}\"," + nl;
}
else {
payload += "\"state_topic\": \"~/" + group + "/" + field + "\"," + nl;
}
}
else {
payload += "\"state_topic\": \"~/" + field + "\"," + nl;
}
if (unit != "") {
payload += "\"unit_of_meas\": \"" + unit + "\"," + nl;
}
if (deviceClass != "") {
payload += "\"device_class\": \"" + deviceClass + "\"," + nl;
}
if (stateClass != "") {
payload += "\"state_class\": \"" + stateClass + "\"," + nl;
}
if (entityCategory != "") {
payload += "\"entity_category\": \"" + entityCategory + "\"," + nl;
}
payload +=
"\"availability_topic\": \"~/" + std::string(LWT_TOPIC) + "\"," + nl +
"\"payload_available\": \"" + LWT_CONNECTED + "\"," + nl +
"\"payload_not_available\": \"" + LWT_DISCONNECTED + "\"," + nl;
payload +=
"\"device\": {" + nl +
"\"identifiers\": [\"" + maintopic + "\"]," + nl +
"\"name\": \"" + maintopic + "\"," + nl +
"\"model\": \"Meter Digitizer\"," + nl +
"\"manufacturer\": \"AI on the Edge Device\"," + nl +
"\"sw_version\": \"" + version + "\"," + nl +
"\"configuration_url\": \"http://" + *getIPAddress() + "\"" + nl +
"}" + nl +
"}" + nl;
MQTTPublish(topicFull, payload, true);
}
void MQTThomeassistantDiscovery() {
LogFile.WriteToFile(ESP_LOG_INFO, TAG, "MQTT - Sending Homeassistant Discovery Topics (Meter Type: " + meterType + ", Value Unit: " + valueUnit + " , Rate Unit: " + rateUnit + ")...");
// Group | Field | User Friendly Name | Icon | Unit | Device Class | State Class | Entity Category
sendHomeAssistantDiscoveryTopic("", "uptime", "Uptime", "clock-time-eight-outline", "s", "", "", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "MAC", "MAC Address", "network-outline", "", "", "", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "hostname", "Hostname", "network-outline", "", "", "", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "freeMem", "Free Memory", "memory", "B", "", "measurement", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "wifiRSSI", "Wi-Fi RSSI", "wifi", "dBm", "signal_strength", "", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "CPUtemp", "CPU Temperature", "thermometer", "°C", "temperature", "measurement", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "interval", "Interval", "clock-time-eight-outline", "min", "" , "measurement", "diagnostic");
sendHomeAssistantDiscoveryTopic("", "IP", "IP", "network-outline", "", "", "", "diagnostic");
for (int i = 0; i < (*NUMBERS).size(); ++i) {
std::string group = (*NUMBERS)[i]->name;
// Group | Field | User Friendly Name | Icon | Unit | Device Class | State Class | Entity Category
sendHomeAssistantDiscoveryTopic(group, "value", "Value", "gauge", valueUnit, meterType, "total_increasing", "");
sendHomeAssistantDiscoveryTopic(group, "raw", "Raw Value", "raw", valueUnit, "", "total_increasing", "diagnostic");
sendHomeAssistantDiscoveryTopic(group, "error", "Error", "alert-circle-outline", "", "", "", "diagnostic");
/* Not announcing "rate" as it is better to use rate_per_time_unit resp. rate_per_digitalization_round */
// sendHomeAssistantDiscoveryTopic(group, "rate", "Rate (Unit/Minute)", "swap-vertical", "", "", "", ""); // Legacy, always Unit per Minute
sendHomeAssistantDiscoveryTopic(group, "rate_per_time_unit", "Rate (" + rateUnit + ")", "swap-vertical", rateUnit, "", "", "");
sendHomeAssistantDiscoveryTopic(group, "rate_per_digitalization_round", "Change since last digitalization round", "arrow-expand-vertical", valueUnit, "", "measurement", ""); // correctly the Unit is Uint/Interval!
/* The timestamp string misses the Timezone, see PREVALUE_TIME_FORMAT_OUTPUT!
We need to know the timezone and append it! Until we do this, we simply
do not set the device class to "timestamp" to avoid errors in Homeassistant! */
// sendHomeAssistantDiscoveryTopic(group, "timestamp", "Timestamp", "clock-time-eight-outline", "", "timestamp", "", "diagnostic");
sendHomeAssistantDiscoveryTopic(group, "timestamp", "Timestamp", "clock-time-eight-outline", "", "", "", "diagnostic");
sendHomeAssistantDiscoveryTopic(group, "json", "JSON", "code-json", "", "", "", "diagnostic");
sendHomeAssistantDiscoveryTopic(group, "problem", "Problem", "alert-outline", "", "", "", ""); // Special binary sensor which is based on error topic
}
}
void publishSystemData() {
char tmp_char[50];
LogFile.WriteToFile(ESP_LOG_INFO, TAG, "Publishing system MQTT topics...");
sprintf(tmp_char, "%ld", (long)getUpTime());
MQTTPublish(maintopic + "/" + "uptime", std::string(tmp_char), retainFlag);
sprintf(tmp_char, "%zu", esp_get_free_heap_size());
MQTTPublish(maintopic + "/" + "freeMem", std::string(tmp_char), retainFlag);
sprintf(tmp_char, "%d", get_WIFI_RSSI());
MQTTPublish(maintopic + "/" + "wifiRSSI", std::string(tmp_char), retainFlag);
sprintf(tmp_char, "%d", (int)temperatureRead());
MQTTPublish(maintopic + "/" + "CPUtemp", std::string(tmp_char), retainFlag);
}
void publishStaticData() {
LogFile.WriteToFile(ESP_LOG_INFO, TAG, "Publishing static MQTT topics...");
MQTTPublish(maintopic + "/" + "MAC", getMac(), retainFlag);
MQTTPublish(maintopic + "/" + "IP", *getIPAddress(), retainFlag);
MQTTPublish(maintopic + "/" + "hostname", hostname, retainFlag);
std::stringstream stream;
stream << std::fixed << std::setprecision(1) << roundInterval; // minutes
MQTTPublish(maintopic + "/" + "interval", stream.str(), retainFlag);
}
esp_err_t sendDiscovery_and_static_Topics(httpd_req_t *req) {
if (HomeassistantDiscovery) {
MQTThomeassistantDiscovery();
}
publishStaticData();
const char* resp_str = (const char*) req->user_ctx;
httpd_resp_send(req, resp_str, strlen(resp_str));
return ESP_OK;
}
void GotConnected(std::string maintopic, int retainFlag) {
if (HomeassistantDiscovery) {
MQTThomeassistantDiscovery();
}
publishStaticData();
publishSystemData();
}
void register_server_mqtt_uri(httpd_handle_t server) {
httpd_uri_t uri = { };
uri.method = HTTP_GET;
uri.uri = "/mqtt_publish_discovery";
uri.handler = sendDiscovery_and_static_Topics;
uri.user_ctx = (void*) "MQTT Discovery and Static Topics sent";
httpd_register_uri_handler(server, &uri);
}
std::string getTimeUnit(void) {
return timeUnit;
}
void SetHomeassistantDiscoveryEnabled(bool enabled) {
HomeassistantDiscovery = enabled;
}
void setMqtt_Server_Retain(int _retainFlag) {
retainFlag = _retainFlag;
}
void mqttServer_setMainTopic( std::string _maintopic) {
maintopic = _maintopic;
}
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