add source to metrics, add histogram and summary to client

Author: digitalsadhu

lib/client.js

@@ -9,6 +9,8 @@ const Metric = require('@metrics/metric');
 
 const Counter = require('./counter');
 const Gauge = require('./gauge');
+const Summary = require('./summary');
+const Histogram = require('./histogram');
 
 const push = Symbol('push');
 
@@ -46,16 +48,44 @@ const MetricsClient = class MetricsClient extends stream.Transform {
 
     counter(options) {
         const counter = new Counter(options);
-        counter.on('metric', metric => this[push](metric));
+        counter.on('metric', metric => {
+            // eslint-disable-next-line no-param-reassign
+            metric.source = this.source;
+            this[push](metric);
+        });
         return counter;
     }
 
     gauge(options) {
         const gauge = new Gauge(options);
-        gauge.on('metric', metric => this[push](metric));
+        gauge.on('metric', metric => {
+            // eslint-disable-next-line no-param-reassign
+            metric.source = this.source;
+            this[push](metric);
+        });
         return gauge;
     }
 
+    summary(options) {
+        const summary = new Summary(options);
+        summary.on('metric', metric => {
+            // eslint-disable-next-line no-param-reassign
+            metric.source = this.source;
+            this[push](metric);
+        });
+        return summary;
+    }
+
+    histogram(options) {
+        const histogram = new Histogram(options);
+        histogram.on('metric', metric => {
+            // eslint-disable-next-line no-param-reassign
+            metric.source = this.source;
+            this[push](metric);
+        });
+        return histogram;
+    }
+
     timer(options = {}) {
         const end = timeSpan();
         return (opts = {}) => {
@@ -68,12 +98,14 @@ const MetricsClient = class MetricsClient extends stream.Transform {
                 ...opts,
                 meta,
             });
+            metric.source = this.source;
             this[push](metric);
         };
     }
 
     metric(options) {
         const metric = new Metric(options);
+        metric.source = this.source;
         this[push](metric);
     }