add metrics client register

packages/unleash-api/lib/client-metrics-service.js

@@ -1,16 +1,25 @@
 'use strict';
 
 const POLL_INTERVAL = 10000;
+const { EventEmitter } = require('events');
 
-module.exports = class UnleashClientMetrics {
+module.exports = class UnleashClientMetricsService extends EventEmitter {
     constructor (metricsDb) {
+        super();
         this.metricsDb = metricsDb;
         this.metrics = [];
         this.highestIdSeen = 0;
-        metricsDb.getMetricsLastWeek().then(metrics => {
-            this.addMetrics(metrics);
-            this.startPoller();
-        });
+        this.fetch();
+    }
+
+    fetch () {
+        return this.metricsDb
+            .getNewMetrics(this.highestIdSeen)
+            .then(metrics => {
+                this.startTimer();
+                this.addMetrics(metrics);
+                return metrics;
+            });
     }
 
     addMetrics (metrics) {
@@ -18,13 +27,11 @@ module.exports = class UnleashClientMetrics {
         if (this.metrics && this.metrics.length > 0) {
             this.highestIdSeen = this.metrics[this.metrics.length - 1].id;
         }
+        this.emit('metrics', metrics);
     }
 
-    startPoller () {
-        setInterval(() => {
-            this.metricsDb.getNewMetrics(this.highestIdSeen)
-                .then(metrics => this.addMetrics(metrics));
-        }, POLL_INTERVAL).unref();
+    startTimer () {
+        setInterval(() => this.fetch(), POLL_INTERVAL).unref();
     }
 
     getMetrics () {
@@ -32,6 +39,6 @@ module.exports = class UnleashClientMetrics {
     }
 
     insert (metrics) {
-        this.metricsDb.insert(metrics).then(() => console.log('new metrics inserted!'));
+        return this.metricsDb.insert(metrics);
     }
 };

packages/unleash-api/lib/client-metrics.js

@@ -14,8 +14,7 @@ module.exports = class UnleashClientMetrics {
     }
 
     getState () {
-        // TODO this payload will be WAY to big, need to flatten the store
-        // and possibly evict/flag stale clients
+        // TODO need to flatten the store / possibly evict/flag stale clients
         return {
             globalCount: this.globalCount,
             apps: this.apps,
@@ -25,10 +24,13 @@ module.exports = class UnleashClientMetrics {
         };
     }
 
-    addPayload (data) {
-        this.addApp(data.appName);
-        this.addClient(data.appName, data.instanceId, data.clientInitTime);
+    registerClient (data) {
+        this.addClient(data.appName, data.instanceId, data.started);
         this.addStrategies(data.appName, data.strategies);
+    }
+
+    addPayload (data) {
+        this.addClient(data.appName, data.instanceId);
         this.addBucket(data.appName, data.instanceId, data.bucket);
     }
 
@@ -70,7 +72,8 @@ module.exports = class UnleashClientMetrics {
         }
     }
 
-    addClient (appName, instanceId, clientInitTime) {
+    addClient (appName, instanceId, started = new Date()) {
+        this.addApp(appName);
         if (instanceId) {
             if (this.clients[instanceId]) {
                 this.clients[instanceId].ping = new Date();
@@ -78,7 +81,7 @@ module.exports = class UnleashClientMetrics {
                 this.clients[instanceId] = {
                     appName,
                     count: 0,
-                    clientInit: clientInitTime,
+                    started,
                     init: new Date(),
                     ping: new Date(),
                 };

packages/unleash-api/lib/routes/metrics.js

@@ -9,28 +9,38 @@ module.exports = function (app, config) {
     const metrics = new ClientMetrics();
     const service = new ClientMetricsService(metricsDb);
 
-    app.get('/metrics', (req, res) => {
-        res.json(service.getMetrics());
-
-        // Your stuff:
-        // res.json(metrics.getState());
+    service.on('metrics', (entries) => {
+        entries.forEach((m) => metrics.addPayload(m.metrics));
     });
 
-    app.post('/metrics', (req, res) => {
-        // TODO: validate input and reply with http errorcode
-        try {
-            // not required with header: Content-Type: application/json
-            // const data = JSON.parse(req.body);
-            // metrics.addPayload(data);
-            service.insert(req.body);
-        } catch (e) {
-            logger.error('Error recieving metrics', e);
-        }
-
-        res.end();
+    app.get('/service-metrics', (req, res) => {
+        res.json(service.getMetrics());
     });
 
     app.get('/metrics', (req, res) => {
         res.json(metrics.getState());
     });
+
+    app.post('/client/metrics', (req, res) => {
+        try {
+            const data = typeof req.body === 'string' ? JSON.parse(req.body) : req.body;
+            metrics.addPayload(data);
+            service.insert(data);
+        } catch (e) {
+            logger.error('Error receiving metrics', e);
+        }
+
+        res.end();
+    });
+
+    app.post('/client/register', (req, res) => {
+        try {
+            const data = typeof req.body === 'string' ? JSON.parse(req.body) : req.body;
+            metrics.registerClient(data);
+        } catch (e) {
+            logger.error('Error registering client', e);
+        }
+
+        res.end();
+    });
 };