Added Node QPS test

examples/qps_test.js

@@ -0,0 +1,102 @@
+/*
+ *
+ * Copyright 2015, 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 async = require('async');
+var parseArgs = require('minimist');
+
+var grpc = require('..');
+var testProto = grpc.load(__dirname + '/../interop/test.proto').grpc.testing;
+var interop_server = require('../interop/interop_server.js');
+
+function runTest(concurrent, seconds, callback) {
+  var testServer = interop_server.getServer(0, false);
+  testServer.server.listen();
+  var client = new testProto.TestService('localhost:' + testServer.port);
+
+  var warmup_num = 100;
+
+  async.waterfall([
+    function warmUp(callback) {
+      var pending = warmup_num;
+      function startCall() {
+        client.emptyCall({}, function(err, resp) {
+          pending--;
+          if (pending === 0) {
+            callback(null);
+          }
+        });
+      }
+      for (var i = 0; i < warmup_num; i++) {
+        startCall();
+      }
+    }, function run(callback) {
+      var running = 0;
+      var count = 0;
+      var start = process.hrtime();
+      function responseCallback(err, resp) {
+        if (process.hrtime(start)[0] < seconds) {
+          count += 1;
+          client.emptyCall({}, responseCallback);
+        } else {
+          running -= 1;
+          if (running <= 0) {
+            callback(null, count);
+          }
+        }
+      }
+      for (var i = 0; i < concurrent; i++) {
+        running += 1;
+        client.emptyCall({}, responseCallback);
+      }
+    }], function(err, count) {
+      testServer.server.shutdown();
+      callback(err, count);
+    });
+}
+
+if (require.main === module) {
+  var argv = parseArgs(process.argv.slice(2), {
+    default: {'concurrent': 100,
+              'time': 10}
+  });
+  runTest(argv.concurrent, argv.time, function(err, count) {
+    if (err) {
+      throw err;
+    }
+    console.log('Concurrent calls:', argv.concurrent);
+    console.log('Time:', argv.time, 'seconds');
+    console.log('QPS:', (count/argv.time));
+  });
+}