Fixed minor bug in metrics server, added metrics client

src/node/stress/metrics_client.js

@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+'use strict';
+
+var grpc = require('../../..');
+
+var proto = grpc.load(__dirname + '/../../proto/grpc/testing/metrics.proto');
+var metrics = proto.grpc.testing;
+
+function main() {
+  var parseArgs = require('minimist');
+  var argv = parseArgs(process.argv, {
+    string: 'metrics_server_address',
+    boolean: 'total_only'
+  });
+  var client = new metrics.MetricsService(argv.metrics_server_address,
+                                          grpc.credentials.createInsecure());
+  if (argv.total_only) {
+    client.getGauge({name: 'qps'}, function(err, data) {
+      console.log(data.name + ':', data.long_value);
+    });
+  } else {
+    var call = client.getAllGauges({});
+    call.on('data', function(data) {
+      console.log(data.name + ':', data.long_value);
+    });
+  }
+}
+
+main();

src/node/stress/metrics_server.js

@@ -44,8 +44,8 @@ function getGauge(call, callback) {
   /* jshint validthis: true */
   // Should be bound to a MetricsServer object
   var name = call.request.name;
-  if (this.gauges.hasOwnProperty[name]) {
+  if (this.gauges.hasOwnProperty(name)) {
-    callback(null, {name: name, value: this.gauges[name]()});
+    callback(null, _.assign({name: name}, this.gauges[name]()));
   } else {
     callback({code: grpc.status.NOT_FOUND,
               details: 'No such gauge: ' + name});
@@ -56,7 +56,7 @@ function getAllGauges(call) {
   /* jshint validthis: true */
   // Should be bound to a MetricsServer object
   _.each(this.gauges, function(getter, name) {
-    call.write({name: name, value: getter()});
+    call.write(_.assign({name: name}, getter()));
   });
   call.end();
 }