fixed typos and add ListTopics implementation.

examples/tips/main.cc

@@ -69,7 +69,7 @@ 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;
@@ -116,7 +116,7 @@ int main(int argc, char** argv) {
   ss << FLAGS_project_id << "/"  << kSubscriptionName;
   grpc::string subscription_name = ss.str();
 
-  // Clean up test topic and subcription.
+  // Clean up test topic and subcription if they exist before.
   grpc::string subscription_topic;
   if (subscriber.GetSubscription(
       subscription_name, &subscription_topic).IsOk()) {
@@ -134,6 +134,18 @@ int main(int argc, char** argv) {
           s.code(), s.details().c_str());
   GPR_ASSERT(s.IsOk());
 
+  std::vector<grpc::string> topics;
+  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());

examples/tips/publisher.cc

@@ -31,6 +31,8 @@
  *
  */
 
+#include <sstream>
+
 #include <grpc++/client_context.h>
 
 #include "examples/tips/publisher.h"
@@ -56,7 +58,7 @@ void Publisher::Shutdown() {
   stub_.reset();
 }
 
-Status Publisher::CreateTopic(const string& topic) {
+Status Publisher::CreateTopic(const grpc::string& topic) {
   Topic request;
   Topic response;
   request.set_name(topic);
@@ -65,15 +67,28 @@ Status Publisher::CreateTopic(const string& topic) {
   return stub_->CreateTopic(&context, request, &response);
 }
 
-Status Publisher::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::stringstream 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 Publisher::GetTopic(const string& topic) {
+Status Publisher::GetTopic(const grpc::string& topic) {
   GetTopicRequest request;
   Topic response;
   ClientContext context;
@@ -83,7 +98,7 @@ Status Publisher::GetTopic(const string& topic) {
   return stub_->GetTopic(&context, request, &response);
 }
 
-Status Publisher::DeleteTopic(const string& topic) {
+Status Publisher::DeleteTopic(const grpc::string& topic) {
   DeleteTopicRequest request;
   proto2::Empty response;
   ClientContext context;
@@ -93,7 +108,7 @@ Status Publisher::DeleteTopic(const string& topic) {
   return stub_->DeleteTopic(&context, request, &response);
 }
 
-Status Publisher::Publish(const string& topic, const string& data) {
+Status Publisher::Publish(const grpc::string& topic, const grpc::string& data) {
   PublishRequest request;
   proto2::Empty response;
   ClientContext context;

examples/tips/publisher.h

@@ -48,12 +48,13 @@ class Publisher {
   Publisher(std::shared_ptr<ChannelInterface> channel);
   void Shutdown();
 
-  Status CreateTopic(const string& topic);
-  Status GetTopic(const string& topic);
-  Status DeleteTopic(const string& topic);
-  Status ListTopics();
+  Status CreateTopic(const grpc::string& topic);
+  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 string& topic, const string& data);
+  Status Publish(const grpc::string& topic, const grpc::string& data);
 
  private:
   std::unique_ptr<tech::pubsub::PublisherService::Stub> stub_;

examples/tips/publisher_test.cc

@@ -51,6 +51,7 @@ namespace grpc {
 namespace testing {
 namespace {
 
+const char kProjectId[] = "project id";
 const char kTopic[] = "test topic";
 const char kMessageData[] = "test message data";
 
@@ -80,6 +81,10 @@ class PublisherServiceImpl : public tech::pubsub::PublisherService::Service {
  Status ListTopics(ServerContext* context,
                    const ::tech::pubsub::ListTopicsRequest* request,
                    ::tech::pubsub::ListTopicsResponse* response) override {
+   std::stringstream ss;
+   ss << "cloud.googleapis.com/project in (/projects/" << kProjectId << ")";
+   EXPECT_EQ(request->query(), ss.str());
+   response->add_topic()->set_name(kTopic);
    return Status::OK;
  }
 
@@ -124,9 +129,15 @@ class PublisherTest : public ::testing::Test {
 
 TEST_F(PublisherTest, TestPublisher) {
   EXPECT_TRUE(publisher_->CreateTopic(kTopic).IsOk());
+
   EXPECT_TRUE(publisher_->Publish(kTopic, kMessageData).IsOk());
+
   EXPECT_TRUE(publisher_->GetTopic(kTopic).IsOk());
-  EXPECT_TRUE(publisher_->ListTopics().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

-// This file will be moved to new location.
+// This file will be moved to a new location.
 
 // Specification of the Pubsub API.
 

examples/tips/subscriber.cc

@@ -56,7 +56,8 @@ void Subscriber::Shutdown() {
   stub_.reset();
 }
 
-Status Subscriber::CreateSubscription(const string& topic, const string& name) {
+Status Subscriber::CreateSubscription(const grpc::string& topic,
+                                      const grpc::string& name) {
   tech::pubsub::Subscription request;
   tech::pubsub::Subscription response;
   ClientContext context;
@@ -67,7 +68,8 @@ Status Subscriber::CreateSubscription(const string& topic, const string& name) {
   return stub_->CreateSubscription(&context, request, &response);
 }
 
-Status Subscriber::GetSubscription(const string& name, string* topic) {
+Status Subscriber::GetSubscription(const grpc::string& name,
+                                   grpc::string* topic) {
   tech::pubsub::GetSubscriptionRequest request;
   tech::pubsub::Subscription response;
   ClientContext context;
@@ -79,7 +81,7 @@ Status Subscriber::GetSubscription(const string& name, string* topic) {
   return s;
 }
 
-Status Subscriber::DeleteSubscription(const string& name) {
+Status Subscriber::DeleteSubscription(const grpc::string& name) {
   tech::pubsub::DeleteSubscriptionRequest request;
   proto2::Empty response;
   ClientContext context;
@@ -89,7 +91,7 @@ Status Subscriber::DeleteSubscription(const string& name) {
   return stub_->DeleteSubscription(&context, request, &response);
 }
 
-Status Subscriber::Pull(const string& name, string* data) {
+Status Subscriber::Pull(const grpc::string& name, grpc::string* data) {
   tech::pubsub::PullRequest request;
   tech::pubsub::PullResponse response;
   ClientContext context;

examples/tips/subscriber.h

@@ -48,14 +48,14 @@ class Subscriber {
   Subscriber(std::shared_ptr<ChannelInterface> channel);
   void Shutdown();
 
-  Status CreateSubscription(const string& topic,
-                            const string& name);
+  Status CreateSubscription(const grpc::string& topic,
+                            const grpc::string& name);
 
-  Status GetSubscription(const string& name, string* topic);
+  Status GetSubscription(const grpc::string& name, grpc::string* topic);
 
-  Status DeleteSubscription(const string& name);
+  Status DeleteSubscription(const grpc::string& name);
 
-  Status Pull(const string& name, string* data);
+  Status Pull(const grpc::string& name, grpc::string* data);
 
  private:
   std::unique_ptr<tech::pubsub::SubscriberService::Stub> stub_;

examples/tips/subscriber_test.cc

@@ -45,8 +45,6 @@
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
-using grpc::ChannelInterface;
-
 namespace grpc {
 namespace testing {
 namespace {
@@ -132,7 +130,6 @@ TEST_F(SubscriberTest, TestSubscriber) {
   EXPECT_TRUE(subscriber_->CreateSubscription(kTopic,
                                               kSubscriptionName).IsOk());
 
-
   grpc::string topic;
   EXPECT_TRUE(subscriber_->GetSubscription(kSubscriptionName,
                                            &topic).IsOk());