Initial checkin of gRPC to third_party/

third_party/grpc/src/node/performance/worker_service_impl.js

+/*
+ *
+ * Copyright 2015-2016, 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 os = require('os');
+var BenchmarkClient = require('./benchmark_client');
+var BenchmarkServer = require('./benchmark_server');
+
+exports.quitWorker = function quitWorker(call, callback) {
+  callback(null, {});
+  process.exit(0);
+}
+
+exports.runClient = function runClient(call) {
+  var client;
+  call.on('data', function(request) {
+    var stats;
+    switch (request.argtype) {
+      case 'setup':
+      var setup = request.setup;
+      client = new BenchmarkClient(setup.server_targets,
+                                   setup.client_channels,
+                                   setup.histogram_params,
+                                   setup.security_params);
+      client.on('error', function(error) {
+        call.emit('error', error);
+      });
+      switch (setup.load_params.load) {
+        case 'closed_loop':
+        client.startClosedLoop(setup.outstanding_rpcs_per_channel,
+                               setup.rpc_type,
+                               setup.payload_config.simple_params.req_size,
+                               setup.payload_config.simple_params.resp_size);
+        break;
+        case 'poisson':
+        client.startPoisson(setup.outstanding_rpcs_per_channel,
+                            setup.rpc_type, setup.payload_config.req_size,
+                            setup.payload_config.resp_size,
+                            setup.load_params.poisson.offered_load);
+        break;
+        default:
+        call.emit('error', new Error('Unsupported LoadParams type' +
+            setup.load_params.load));
+      }
+      stats = client.mark();
+      call.write({
+        stats: stats
+      });
+      break;
+      case 'mark':
+      if (client) {
+        stats = client.mark(request.mark.reset);
+        call.write({
+          stats: stats
+        });
+      } else {
+        call.emit('error', new Error('Got Mark before ClientConfig'));
+      }
+      break;
+      default:
+      throw new Error('Nonexistent client argtype option: ' + request.argtype);
+    }
+  });
+  call.on('end', function() {
+    client.stop(function() {
+      call.end();
+    });
+  });
+};
+
+exports.runServer = function runServer(call) {
+  var server;
+  call.on('data', function(request) {
+    var stats;
+    switch (request.argtype) {
+      case 'setup':
+      server = new BenchmarkServer('[::]', request.setup.port,
+                                   request.setup.security_params);
+      server.start();
+      stats = server.mark();
+      call.write({
+        stats: stats,
+        port: server.getPort()
+      });
+      break;
+      case 'mark':
+      if (server) {
+        stats = server.mark(request.mark.reset);
+        call.write({
+          stats: stats,
+          port: server.getPort(),
+          cores: 1
+        });
+      } else {
+        call.emit('error', new Error('Got Mark before ServerConfig'));
+      }
+      break;
+      default:
+      throw new Error('Nonexistent server argtype option');
+    }
+  });
+  call.on('end', function() {
+    server.stop(function() {
+      call.end();
+    });
+  });
+};
+
+exports.coreCount = function coreCount(call, callback) {
+  callback(null, {cores: os.cpus().length});
+};