modified: software/app.php

modified:   software/integration.php

software/app.php

@@ -17,5 +17,5 @@ $router->get('/favicon.ico', function() {
 });
 
 require_once('device-api.php');
-//require_once('integration.php');
+require_once('integration.php');
 

software/integration.php

@@ -1,7 +1,27 @@
 <?php
 
 // Prometheus metrics endpoint for temperatures.
-$router->get('/metrics', function($req) {
+$router->get('/metrics', function($req) use($db) {
+    header('Content-Type: text/plain; charset=UTF-8');
+
+    $results = $db->getDevices();
+
+    // Print temperature metrics
+    echo "# HELP temperature_celsius Temperature readings from the device\n";
+    echo "# TYPE temperature_celsius gauge\n";
+    foreach ($results as $index => $row) {
+        $temperature = $row['temperature'];
+        echo "temperature_celsius{device_id=\"{$row['id']}\"} $temperature\n";
+    }
+
+    // Print humidity metrics
+    echo "# HELP relative_humidity_percent Humidity readings from the device\n";
+    echo "# TYPE relative_humidity_percent gauge\n";
+    foreach ($results as $index => $row) {
+        $humidity = $row['humidity'];
+        echo "relative_humidity_percent{device_id=\"{$row['id']}\"} $humidity\n";
+    }
+
     http_response_code(200);
 });