Merge pull request #341 from chen-wang/master

Implement full logic of publish and subscribe

build.json

@@ -433,7 +433,8 @@
         "examples/tips/label.proto",
         "examples/tips/empty.proto",
         "examples/tips/pubsub.proto",
-        "examples/tips/client.cc"
+        "examples/tips/publisher.cc",
+        "examples/tips/subscriber.cc"
       ],
       "deps": [
         "grpc++",
@@ -1567,6 +1568,58 @@
       ],
       "run": false
     },
+    {
+      "name": "tips_client",
+      "build": "test",
+      "run": false,
+      "language": "c++",
+      "src": [
+        "examples/tips/main.cc"
+      ],
+      "deps": [
+        "tips_client_lib",
+        "grpc++_test_util",
+        "grpc_test_util",
+        "grpc++",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
+    {
+      "name": "tips_publisher_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "examples/tips/publisher_test.cc"
+      ],
+      "deps": [
+        "tips_client_lib",
+        "grpc++_test_util",
+        "grpc_test_util",
+        "grpc++",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
+    {
+      "name": "tips_subscriber_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "examples/tips/subscriber_test.cc"
+      ],
+      "deps": [
+        "tips_client_lib",
+        "grpc++_test_util",
+        "grpc_test_util",
+        "grpc++",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
     {
       "name": "qps_client",
       "build": "test",

examples/tips/empty.proto

@@ -1,3 +1,5 @@
+// This file will be moved to a new location.
+
 syntax = "proto2";
 
 package proto2;

examples/tips/label.proto

@@ -1,3 +1,5 @@
+// This file will be moved to a new location.
+
 // Labels provide a way to associate user-defined metadata with various
 // objects.  Labels may be used to organize objects into non-hierarchical
 // groups; think metadata tags attached to mp3s.

examples/tips/main.cc

@@ -46,18 +46,30 @@
 #include <grpc++/credentials.h>
 #include <grpc++/status.h>
 
-#include "examples/tips/client.h"
+#include "examples/tips/publisher.h"
+#include "examples/tips/subscriber.h"
 #include "test/cpp/util/create_test_channel.h"
 
 DEFINE_int32(server_port, 443, "Server port.");
 DEFINE_string(server_host,
               "pubsub-staging.googleapis.com", "Server host to connect to");
+DEFINE_string(project_id, "", "GCE project id such as stoked-keyword-656");
 DEFINE_string(service_account_key_file, "",
               "Path to service account json key file.");
-DEFINE_string(oauth_scope, "", "Scope for OAuth tokens.");
+DEFINE_string(oauth_scope,
+              "https://www.googleapis.com/auth/cloud-platform",
+              "Scope for OAuth tokens.");
+
+namespace {
+
+const char kTopic[] = "testtopics";
+const char kSubscriptionName[] = "testsubscription";
+const char kMessageData[] = "Test Data";
+
+}  // namespace
 
 grpc::string GetServiceAccountJsonKey() {
-  static grpc::string json_key;
+  grpc::string json_key;
   if (json_key.empty()) {
     std::ifstream json_key_file(FLAGS_service_account_key_file);
     std::stringstream key_stream;
@@ -72,10 +84,7 @@ int main(int argc, char** argv) {
   google::ParseCommandLineFlags(&argc, &argv, true);
   gpr_log(GPR_INFO, "Start TIPS client");
 
-  const int host_port_buf_size = 1024;
+  std::ostringstream ss;
-  char host_port[host_port_buf_size];
-  snprintf(host_port, host_port_buf_size, "%s:%d", FLAGS_server_host.c_str(),
-           FLAGS_server_port);
 
   std::unique_ptr<grpc::Credentials> creds;
   if (FLAGS_service_account_key_file != "") {
@@ -86,28 +95,83 @@ int main(int argc, char** argv) {
     creds = grpc::CredentialsFactory::ComputeEngineCredentials();
   }
 
+  ss << FLAGS_server_host << ":" << FLAGS_server_port;
   std::shared_ptr<grpc::ChannelInterface> channel(
       grpc::CreateTestChannel(
-          host_port,
+          ss.str(),
           FLAGS_server_host,
           true,                // enable SSL
           true,                // use prod roots
           creds));
 
-  grpc::examples::tips::Client client(channel);
+  grpc::examples::tips::Publisher publisher(channel);
+  grpc::examples::tips::Subscriber subscriber(channel);
+
+  GPR_ASSERT(FLAGS_project_id != "");
+  ss.str("");
+  ss << "/topics/" << FLAGS_project_id << "/" << kTopic;
+  grpc::string topic = ss.str();
+
+  ss.str("");
+  ss << FLAGS_project_id << "/"  << kSubscriptionName;
+  grpc::string subscription_name = ss.str();
+
+  // Clean up test topic and subcription if they exist before.
+  grpc::string subscription_topic;
+  if (subscriber.GetSubscription(
+      subscription_name, &subscription_topic).IsOk()) {
+    subscriber.DeleteSubscription(subscription_name);
+  }
+  if (publisher.GetTopic(topic).IsOk()) publisher.DeleteTopic(topic);
+
+  grpc::Status s = publisher.CreateTopic(topic);
+  gpr_log(GPR_INFO, "Create topic returns code %d, %s",
+          s.code(), s.details().c_str());
+  GPR_ASSERT(s.IsOk());
 
-  grpc::Status s = client.CreateTopic("/topics/stoked-keyword-656/testtopics");
+  s = publisher.GetTopic(topic);
-  gpr_log(GPR_INFO, "return code %d, %s", s.code(), s.details().c_str());
+  gpr_log(GPR_INFO, "Get topic returns code %d, %s",
+          s.code(), s.details().c_str());
   GPR_ASSERT(s.IsOk());
 
-  s = client.GetTopic("/topics/stoked-keyword-656/testtopics");
+  std::vector<grpc::string> topics;
-  gpr_log(GPR_INFO, "return code %d, %s", s.code(), s.details().c_str());
+  s = publisher.ListTopics(FLAGS_project_id, &topics);
+  gpr_log(GPR_INFO, "List topic returns code %d, %s",
+          s.code(), s.details().c_str());
+  bool topic_found = false;
+  for (unsigned int i = 0; i < topics.size(); i++) {
+    if (topics[i] == topic) topic_found = true;
+    gpr_log(GPR_INFO, "topic: %s", topics[i].c_str());
+  }
+  GPR_ASSERT(s.IsOk());
+  GPR_ASSERT(topic_found);
+
+  s = subscriber.CreateSubscription(topic, subscription_name);
+  gpr_log(GPR_INFO, "create subscrption returns code %d, %s",
+          s.code(), s.details().c_str());
+  GPR_ASSERT(s.IsOk());
+
+  s = publisher.Publish(topic, kMessageData);
+  gpr_log(GPR_INFO, "Publish %s returns code %d, %s",
+          kMessageData, s.code(), s.details().c_str());
+  GPR_ASSERT(s.IsOk());
+
+  grpc::string data;
+  s = subscriber.Pull(subscription_name, &data);
+  gpr_log(GPR_INFO, "Pull %s", data.c_str());
+
+  s =  subscriber.DeleteSubscription(subscription_name);
+  gpr_log(GPR_INFO, "Delete subscription returns code %d, %s",
+          s.code(), s.details().c_str());
   GPR_ASSERT(s.IsOk());
 
-  s = client.DeleteTopic("/topics/stoked-keyword-656/testtopics");
+  s = publisher.DeleteTopic(topic);
-  gpr_log(GPR_INFO, "return code %d, %s", s.code(), s.details().c_str());
+  gpr_log(GPR_INFO, "Delete topic returns code %d, %s",
+          s.code(), s.details().c_str());
   GPR_ASSERT(s.IsOk());
 
+  subscriber.Shutdown();
+  publisher.Shutdown();
   channel.reset();
   grpc_shutdown();
   return 0;

examples/tips/publisher.cc

@@ -31,9 +31,11 @@
  *
  */
 
+#include <sstream>
+
 #include <grpc++/client_context.h>
 
-#include "examples/tips/client.h"
+#include "examples/tips/publisher.h"
 
 using tech::pubsub::Topic;
 using tech::pubsub::DeleteTopicRequest;
@@ -41,16 +43,22 @@ using tech::pubsub::GetTopicRequest;
 using tech::pubsub::PublisherService;
 using tech::pubsub::ListTopicsRequest;
 using tech::pubsub::ListTopicsResponse;
+using tech::pubsub::PublishRequest;
+using tech::pubsub::PubsubMessage;
 
 namespace grpc {
 namespace examples {
 namespace tips {
 
-Client::Client(std::shared_ptr<ChannelInterface> channel)
+Publisher::Publisher(std::shared_ptr<ChannelInterface> channel)
     : stub_(PublisherService::NewStub(channel)) {
 }
 
-Status Client::CreateTopic(grpc::string topic) {
+void Publisher::Shutdown() {
+  stub_.reset();
+}
+
+Status Publisher::CreateTopic(const grpc::string& topic) {
   Topic request;
   Topic response;
   request.set_name(topic);
@@ -59,15 +67,28 @@ Status Client::CreateTopic(grpc::string topic) {
   return stub_->CreateTopic(&context, request, &response);
 }
 
-Status Client::ListTopics() {
+Status Publisher::ListTopics(const grpc::string& project_id,
+                             std::vector<grpc::string>* topics) {
   ListTopicsRequest request;
   ListTopicsResponse response;
   ClientContext context;
 
-  return stub_->ListTopics(&context, request, &response);
+  std::ostringstream ss;
+  ss << "cloud.googleapis.com/project in (/projects/" << project_id << ")";
+  request.set_query(ss.str());
+
+  Status s = stub_->ListTopics(&context, request, &response);
+
+  tech::pubsub::Topic topic;
+  for (int i = 0; i < response.topic_size(); i++) {
+    topic = response.topic(i);
+    topics->push_back(topic.name());
+  }
+
+  return s;
 }
 
-Status Client::GetTopic(grpc::string topic) {
+Status Publisher::GetTopic(const grpc::string& topic) {
   GetTopicRequest request;
   Topic response;
   ClientContext context;
@@ -77,7 +98,7 @@ Status Client::GetTopic(grpc::string topic) {
   return stub_->GetTopic(&context, request, &response);
 }
 
-Status Client::DeleteTopic(grpc::string topic) {
+Status Publisher::DeleteTopic(const grpc::string& topic) {
   DeleteTopicRequest request;
   proto2::Empty response;
   ClientContext context;
@@ -87,6 +108,17 @@ Status Client::DeleteTopic(grpc::string topic) {
   return stub_->DeleteTopic(&context, request, &response);
 }
 
+Status Publisher::Publish(const grpc::string& topic, const grpc::string& data) {
+  PublishRequest request;
+  proto2::Empty response;
+  ClientContext context;
+
+  request.mutable_message()->set_data(data);
+  request.set_topic(topic);
+
+  return stub_->Publish(&context, request, &response);
+}
+
 }  // namespace tips
 }  // namespace examples
 }  // namespace grpc

examples/tips/publisher.h

@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef __GRPCPP_EXAMPLES_TIPS_CLIENT_H_
+#ifndef __GRPCPP_EXAMPLES_TIPS_PUBLISHER_H_
-#define __GRPCPP_EXAMPLES_TIPS_CLIENT_H_
+#define __GRPCPP_EXAMPLES_TIPS_PUBLISHER_H_
 
 #include <grpc++/channel_interface.h>
 #include <grpc++/status.h>
@@ -43,13 +43,18 @@ namespace grpc {
 namespace examples {
 namespace tips {
 
-class Client {
+class Publisher {
  public:
-  Client(std::shared_ptr<grpc::ChannelInterface> channel);
+  Publisher(std::shared_ptr<ChannelInterface> channel);
-  Status CreateTopic(grpc::string topic);
+  void Shutdown();
-  Status GetTopic(grpc::string topic);
+
-  Status DeleteTopic(grpc::string topic);
+  Status CreateTopic(const grpc::string& topic);
-  Status ListTopics();
+  Status GetTopic(const grpc::string& topic);
+  Status DeleteTopic(const grpc::string& topic);
+  Status ListTopics(const grpc::string& project_id,
+                    std::vector<grpc::string>* topics);
+
+  Status Publish(const grpc::string& topic, const grpc::string& data);
 
  private:
   std::unique_ptr<tech::pubsub::PublisherService::Stub> stub_;
@@ -59,4 +64,4 @@ class Client {
 }  // namespace examples
 }  // namespace grpc
 
-#endif  // __GRPCPP_EXAMPLES_TIPS_CLIENT_H_
+#endif  // __GRPCPP_EXAMPLES_TIPS_PUBLISHER_H_

examples/tips/publisher_test.cc

@@ -41,7 +41,7 @@
 #include <grpc++/status.h>
 #include <gtest/gtest.h>
 
-#include "examples/tips/client.h"
+#include "examples/tips/publisher.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
@@ -51,9 +51,11 @@ namespace grpc {
 namespace testing {
 namespace {
 
+const char kProjectId[] = "project id";
 const char kTopic[] = "test topic";
+const char kMessageData[] = "test message data";
 
-class PublishServiceImpl : public tech::pubsub::PublisherService::Service {
+class PublisherServiceImpl : public tech::pubsub::PublisherService::Service {
  public:
   Status CreateTopic(::grpc::ServerContext* context,
                      const ::tech::pubsub::Topic* request,
@@ -61,34 +63,81 @@ class PublishServiceImpl : public tech::pubsub::PublisherService::Service {
     EXPECT_EQ(request->name(), kTopic);
     return Status::OK;
   }
+
+  Status Publish(ServerContext* context,
+                 const ::tech::pubsub::PublishRequest* request,
+                 ::proto2::Empty* response) override {
+    EXPECT_EQ(request->message().data(), kMessageData);
+    return Status::OK;
+  }
+
+  Status GetTopic(ServerContext* context,
+                  const ::tech::pubsub::GetTopicRequest* request,
+                  ::tech::pubsub::Topic* response) override {
+    EXPECT_EQ(request->topic(), kTopic);
+    return Status::OK;
+  }
+
+ Status ListTopics(ServerContext* context,
+                   const ::tech::pubsub::ListTopicsRequest* request,
+                   ::tech::pubsub::ListTopicsResponse* response) override {
+   std::ostringstream ss;
+   ss << "cloud.googleapis.com/project in (/projects/" << kProjectId << ")";
+   EXPECT_EQ(request->query(), ss.str());
+   response->add_topic()->set_name(kTopic);
+   return Status::OK;
+ }
+
+ Status DeleteTopic(ServerContext* context,
+                    const ::tech::pubsub::DeleteTopicRequest* request,
+                    ::proto2::Empty* response) override {
+    EXPECT_EQ(request->topic(), kTopic);
+    return Status::OK;
+ }
+
 };
 
-class End2endTest : public ::testing::Test {
+class PublisherTest : public ::testing::Test {
  protected:
+  // Setup a server and a client for PublisherService.
   void SetUp() override {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << "localhost:" << port;
-    // Setup server
     ServerBuilder builder;
     builder.AddPort(server_address_.str());
     builder.RegisterService(service_.service());
     server_ = builder.BuildAndStart();
 
     channel_ = CreateChannel(server_address_.str(), ChannelArguments());
+
+    publisher_.reset(new grpc::examples::tips::Publisher(channel_));
   }
 
-  void TearDown() override { server_->Shutdown(); }
+  void TearDown() override {
+    server_->Shutdown();
+    publisher_->Shutdown();
+  }
 
-  std::unique_ptr<Server> server_;
   std::ostringstream server_address_;
-  PublishServiceImpl service_;
+  std::unique_ptr<Server> server_;
+  PublisherServiceImpl service_;
 
   std::shared_ptr<ChannelInterface> channel_;
+
+  std::unique_ptr<grpc::examples::tips::Publisher> publisher_;
 };
 
-TEST_F(End2endTest, CreateTopic) {
+TEST_F(PublisherTest, TestPublisher) {
-  grpc::examples::tips::Client client(channel_);
+  EXPECT_TRUE(publisher_->CreateTopic(kTopic).IsOk());
-  client.CreateTopic(kTopic);
+
+  EXPECT_TRUE(publisher_->Publish(kTopic, kMessageData).IsOk());
+
+  EXPECT_TRUE(publisher_->GetTopic(kTopic).IsOk());
+
+  std::vector<grpc::string> topics;
+  EXPECT_TRUE(publisher_->ListTopics(kProjectId, &topics).IsOk());
+  EXPECT_EQ(topics.size(), 1);
+  EXPECT_EQ(topics[0], kTopic);
 }
 
 }  // namespace

examples/tips/pubsub.proto

@@ -1,3 +1,5 @@
+// This file will be moved to a new location.
+
 // Specification of the Pubsub API.
 
 syntax = "proto2";

examples/tips/subscriber.cc

@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2014, 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.
+ *
+ */
+
+#include <grpc++/client_context.h>
+
+#include "examples/tips/subscriber.h"
+
+using tech::pubsub::Topic;
+using tech::pubsub::DeleteTopicRequest;
+using tech::pubsub::GetTopicRequest;
+using tech::pubsub::SubscriberService;
+using tech::pubsub::ListTopicsRequest;
+using tech::pubsub::ListTopicsResponse;
+using tech::pubsub::PublishRequest;
+using tech::pubsub::PubsubMessage;
+
+namespace grpc {
+namespace examples {
+namespace tips {
+
+Subscriber::Subscriber(std::shared_ptr<ChannelInterface> channel)
+    : stub_(SubscriberService::NewStub(channel)) {
+}
+
+void Subscriber::Shutdown() {
+  stub_.reset();
+}
+
+Status Subscriber::CreateSubscription(const grpc::string& topic,
+                                      const grpc::string& name) {
+  tech::pubsub::Subscription request;
+  tech::pubsub::Subscription response;
+  ClientContext context;
+
+  request.set_topic(topic);
+  request.set_name(name);
+
+  return stub_->CreateSubscription(&context, request, &response);
+}
+
+Status Subscriber::GetSubscription(const grpc::string& name,
+                                   grpc::string* topic) {
+  tech::pubsub::GetSubscriptionRequest request;
+  tech::pubsub::Subscription response;
+  ClientContext context;
+
+  request.set_subscription(name);
+
+  Status s = stub_->GetSubscription(&context, request, &response);
+  *topic = response.topic();
+  return s;
+}
+
+Status Subscriber::DeleteSubscription(const grpc::string& name) {
+  tech::pubsub::DeleteSubscriptionRequest request;
+  proto2::Empty response;
+  ClientContext context;
+
+  request.set_subscription(name);
+
+  return stub_->DeleteSubscription(&context, request, &response);
+}
+
+Status Subscriber::Pull(const grpc::string& name, grpc::string* data) {
+  tech::pubsub::PullRequest request;
+  tech::pubsub::PullResponse response;
+  ClientContext context;
+
+  request.set_subscription(name);
+  Status s = stub_->Pull(&context, request, &response);
+  if (s.IsOk()) {
+    tech::pubsub::PubsubEvent event = response.pubsub_event();
+    if (event.has_message()) {
+      *data = event.message().data();
+    }
+    tech::pubsub::AcknowledgeRequest ack;
+    proto2::Empty empty;
+    ClientContext ack_context;
+    ack.set_subscription(name);
+    ack.add_ack_id(response.ack_id());
+    stub_->Acknowledge(&ack_context, ack, &empty);
+  }
+  return s;
+}
+
+}  // namespace tips
+}  // namespace examples
+}  // namespace grpc

examples/tips/subscriber.h

@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2014, 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.
+ *
+ */
+
+#ifndef __GRPCPP_EXAMPLES_TIPS_SUBSCRIBER_H_
+#define __GRPCPP_EXAMPLES_TIPS_SUBSCRIBER_H_
+
+#include <grpc++/channel_interface.h>
+#include <grpc++/status.h>
+
+#include "examples/tips/pubsub.pb.h"
+
+namespace grpc {
+namespace examples {
+namespace tips {
+
+class Subscriber {
+ public:
+  Subscriber(std::shared_ptr<ChannelInterface> channel);
+  void Shutdown();
+
+  Status CreateSubscription(const grpc::string& topic,
+                            const grpc::string& name);
+
+  Status GetSubscription(const grpc::string& name, grpc::string* topic);
+
+  Status DeleteSubscription(const grpc::string& name);
+
+  Status Pull(const grpc::string& name, grpc::string* data);
+
+ private:
+  std::unique_ptr<tech::pubsub::SubscriberService::Stub> stub_;
+};
+
+}  // namespace tips
+}  // namespace examples
+}  // namespace grpc
+
+#endif  // __GRPCPP_EXAMPLES_TIPS_SUBSCRIBER_H_

examples/tips/subscriber_test.cc

@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2014, 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.
+ *
+ */
+
+#include <grpc++/channel_arguments.h>
+#include <grpc++/channel_interface.h>
+#include <grpc++/client_context.h>
+#include <grpc++/create_channel.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc++/server_context.h>
+#include <grpc++/status.h>
+#include <gtest/gtest.h>
+
+#include "examples/tips/subscriber.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+namespace grpc {
+namespace testing {
+namespace {
+
+const char kTopic[] = "test topic";
+const char kSubscriptionName[] = "subscription name";
+const char kData[] = "Message data";
+
+class SubscriberServiceImpl : public tech::pubsub::SubscriberService::Service {
+ public:
+  Status CreateSubscription(ServerContext* context,
+                            const tech::pubsub::Subscription* request,
+                            tech::pubsub::Subscription* response) override {
+    EXPECT_EQ(request->topic(), kTopic);
+    EXPECT_EQ(request->name(), kSubscriptionName);
+    return Status::OK;
+  }
+
+  Status GetSubscription(ServerContext* context,
+                         const tech::pubsub::GetSubscriptionRequest* request,
+                         tech::pubsub::Subscription* response) override {
+    EXPECT_EQ(request->subscription(), kSubscriptionName);
+    response->set_topic(kTopic);
+    return Status::OK;
+  }
+
+  Status DeleteSubscription(
+      ServerContext* context,
+      const tech::pubsub::DeleteSubscriptionRequest* request,
+      proto2::Empty* response) override {
+    EXPECT_EQ(request->subscription(), kSubscriptionName);
+    return Status::OK;
+  }
+
+  Status Pull(ServerContext* context,
+              const tech::pubsub::PullRequest* request,
+              tech::pubsub::PullResponse* response) override {
+    EXPECT_EQ(request->subscription(), kSubscriptionName);
+    response->set_ack_id("1");
+    response->mutable_pubsub_event()->mutable_message()->set_data(kData);
+    return Status::OK;
+  }
+
+  Status Acknowledge(ServerContext* context,
+                     const tech::pubsub::AcknowledgeRequest* request,
+                     proto2::Empty* response) override {
+    return Status::OK;
+  }
+
+};
+
+class SubscriberTest : public ::testing::Test {
+ protected:
+  // Setup a server and a client for SubscriberService.
+  void SetUp() override {
+    int port = grpc_pick_unused_port_or_die();
+    server_address_ << "localhost:" << port;
+    ServerBuilder builder;
+    builder.AddPort(server_address_.str());
+    builder.RegisterService(service_.service());
+    server_ = builder.BuildAndStart();
+
+    channel_ = CreateChannel(server_address_.str(), ChannelArguments());
+
+    subscriber_.reset(new grpc::examples::tips::Subscriber(channel_));
+  }
+
+  void TearDown() override {
+    server_->Shutdown();
+    subscriber_->Shutdown();
+  }
+
+  std::ostringstream server_address_;
+  std::unique_ptr<Server> server_;
+  SubscriberServiceImpl service_;
+
+  std::shared_ptr<ChannelInterface> channel_;
+
+  std::unique_ptr<grpc::examples::tips::Subscriber> subscriber_;
+};
+
+TEST_F(SubscriberTest, TestSubscriber) {
+  EXPECT_TRUE(subscriber_->CreateSubscription(kTopic,
+                                              kSubscriptionName).IsOk());
+
+  grpc::string topic;
+  EXPECT_TRUE(subscriber_->GetSubscription(kSubscriptionName,
+                                           &topic).IsOk());
+  EXPECT_EQ(topic, kTopic);
+
+  grpc::string data;
+  EXPECT_TRUE(subscriber_->Pull(kSubscriptionName,
+                                &data).IsOk());
+
+  EXPECT_TRUE(subscriber_->DeleteSubscription(kSubscriptionName).IsOk());
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  ::testing::InitGoogleTest(&argc, argv);
+  gpr_log(GPR_INFO, "Start test ...");
+  int result = RUN_ALL_TESTS();
+  grpc_shutdown();
+  return result;
+}

tools/run_tests/tests.json

@@ -269,6 +269,14 @@
     "language": "c++", 
     "name": "end2end_test"
   }, 
+  {
+    "language": "c++", 
+    "name": "tips_publisher_test"
+  }, 
+  {
+    "language": "c++", 
+    "name": "tips_subscriber_test"
+  }, 
   {
     "language": "c++", 
     "name": "status_test"