X-dark/esp32-env-monitor
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add Prometheus endpoint

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This commit is contained in:
Cedric Girard 2019-07-31 17:43:07 +02:00
parent 5d263b9657
commit 27ca17f5e3
Signed by: X-dark
GPG key ID: E7D0E125DB9519E4
1 changed files with 35 additions and 4 deletions
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39
esp32-env-monitor.ino
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@ -67,9 +67,38 @@ uint32_t getAbsoluteHumidity(float temperature, float humidity) {
return absoluteHumidityScaled; return absoluteHumidityScaled;
} }
BME280::TempUnit tempUnit(BME280::TempUnit_Celsius);
BME280::PresUnit presUnit(BME280::PresUnit_hPa);
float temp(NAN), hum(NAN), pres(NAN);
uint16_t TVOC_base, eCO2_base; uint16_t TVOC_base, eCO2_base;
bool baseline_set = false; bool baseline_set = false;
void sendMetrics() {
String message = "# ESP32 Env monitor Prometheus metrics\n\n";
message += "# HELP env_temperature The temperature in " + String(tempUnit == BME280::TempUnit_Celsius ? 'C' :'F') + "\n";
message += "# TYPE env_temperature gauge\n";
message += "env_temperature " + String(temp) + "\n\n";
message += "# HELP env_pressure The pressure in " + String(presUnit) + "\n";
message += "# TYPE env_pressure gauge\n";
message += "env_pressure " + String(pres) + "\n\n";
message += "# HELP env_humidity The humidity in %\n";
message += "# TYPE env_humidity gauge\n";
message += "env_humidity " + String(hum) + "\n\n";
message += "# HELP env_tvoc The TVOC in ppb\n";
message += "# TYPE env_tvoc gauge\n";
message += "env_tvoc " + String(sgp.TVOC) + "\n\n";
message += "# HELP env_eco2 The eCO2 in ppb\n";
message += "# TYPE env_eco2 gauge\n";
message += "env_eco2 " + String(sgp.eCO2) + "\n\n";
server.send(200, "text/plain; version=0.0.4", message);
}
void setup() { void setup() {
//Init Display //Init Display
@ -103,6 +132,12 @@ void setup() {
u8g2log.print("\n"); u8g2log.print("\n");
//Init Server //Init Server
server.on("/",
[]() {
server.send(200, "text/plain", "Welcome to the Env Monitor!\n");
}
);
server.on("/metrics", sendMetrics);
server.onNotFound( server.onNotFound(
[]() { []() {
server.send(404, "text/plain", "Content not found\n"); server.send(404, "text/plain", "Content not found\n");
@ -184,10 +219,6 @@ void loop() {
u8g2log.print("\f"); u8g2log.print("\f");
//Read Temperature, humidity and pressure //Read Temperature, humidity and pressure
float temp(NAN), hum(NAN), pres(NAN);
BME280::TempUnit tempUnit(BME280::TempUnit_Celsius);
BME280::PresUnit presUnit(BME280::PresUnit_hPa);
bme.read(pres, temp, hum, tempUnit, presUnit); bme.read(pres, temp, hum, tempUnit, presUnit);
//Read Air Quality //Read Air Quality