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/*
*
* 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.
*
*/
#include <chrono>
#include <fstream>
#include <memory>
#include <sstream>
#include <string>
#include <thread>
#include <grpc/grpc.h>
#include <grpc/support/log.h>
#include <gflags/gflags.h>
#include <grpc++/channel_interface.h>
#include <grpc++/create_channel.h>
#include <grpc++/credentials.h>
#include <grpc++/status.h>
#include "examples/pubsub/publisher.h"
#include "examples/pubsub/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,
"https://www.googleapis.com/auth/cloud-platform",
"Scope for OAuth tokens.");
// In some distros, gflags is in the namespace google, and in some others,
// in gflags. This hack is enabling us to find both.
namespace google { }
namespace gflags { }
using namespace google;
using namespace gflags;
namespace {
const char kTopic[] = "testtopics";
const char kSubscriptionName[] = "testsubscription";
const char kMessageData[] = "Test Data";
} // namespace
grpc::string GetServiceAccountJsonKey() {
grpc::string json_key;
if (json_key.empty()) {
std::ifstream json_key_file(FLAGS_service_account_key_file);
std::stringstream key_stream;
key_stream << json_key_file.rdbuf();
json_key = key_stream.str();
}
return json_key;
}
int main(int argc, char** argv) {
grpc_init();
ParseCommandLineFlags(&argc, &argv, true);
gpr_log(GPR_INFO, "Start PUBSUB client");
std::ostringstream ss;
std::unique_ptr<grpc::Credentials> creds;
if (FLAGS_service_account_key_file != "") {
grpc::string json_key = GetServiceAccountJsonKey();
creds = grpc::CredentialsFactory::ServiceAccountCredentials(
json_key, FLAGS_oauth_scope, std::chrono::hours(1));
} else {
creds = grpc::CredentialsFactory::ComputeEngineCredentials();
}
ss << FLAGS_server_host << ":" << FLAGS_server_port;
std::shared_ptr<grpc::ChannelInterface> channel(
grpc::CreateTestChannel(
ss.str(),
FLAGS_server_host,
true, // enable SSL
true, // use prod roots
creds));
grpc::examples::pubsub::Publisher publisher(channel);
grpc::examples::pubsub::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());
s = publisher.GetTopic(topic);
gpr_log(GPR_INFO, "Get topic returns code %d, %s",
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());
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 = publisher.DeleteTopic(topic);
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;
}
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