Interop stress tests
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index 5169945..fd01ad0 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -83,7 +83,7 @@
} // namespace
InteropClient::InteropClient(std::shared_ptr<Channel> channel)
- : channel_(channel) {}
+ : channel_(channel), stub_(TestService::NewStub(channel)) {}
void InteropClient::AssertOkOrPrintErrorStatus(const Status& s) {
if (s.ok()) {
@@ -96,13 +96,12 @@
void InteropClient::DoEmpty() {
gpr_log(GPR_INFO, "Sending an empty rpc...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
Empty request = Empty::default_instance();
Empty response = Empty::default_instance();
ClientContext context;
- Status s = stub->EmptyCall(&context, request, &response);
+ Status s = stub_->EmptyCall(&context, request, &response);
AssertOkOrPrintErrorStatus(s);
gpr_log(GPR_INFO, "Empty rpc done.");
@@ -111,7 +110,6 @@
// Shared code to set large payload, make rpc and check response payload.
void InteropClient::PerformLargeUnary(SimpleRequest* request,
SimpleResponse* response) {
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
InteropClientContextInspector inspector(context);
@@ -121,7 +119,7 @@
grpc::string payload(kLargeRequestSize, '\0');
request->mutable_payload()->set_body(payload.c_str(), kLargeRequestSize);
- Status s = stub->UnaryCall(&context, *request, response);
+ Status s = stub_->UnaryCall(&context, *request, response);
// Compression related checks.
GPR_ASSERT(request->response_compression() ==
@@ -187,11 +185,10 @@
SimpleResponse response;
request.set_fill_username(true);
request.set_fill_oauth_scope(true);
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
- Status s = stub->UnaryCall(&context, request, &response);
+ Status s = stub_->UnaryCall(&context, request, &response);
AssertOkOrPrintErrorStatus(s);
GPR_ASSERT(!response.username().empty());
@@ -207,7 +204,6 @@
SimpleRequest request;
SimpleResponse response;
request.set_fill_username(true);
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
std::chrono::seconds token_lifetime = std::chrono::hours(1);
@@ -216,7 +212,7 @@
context.set_credentials(creds);
- Status s = stub->UnaryCall(&context, request, &response);
+ Status s = stub_->UnaryCall(&context, request, &response);
AssertOkOrPrintErrorStatus(s);
GPR_ASSERT(!response.username().empty());
@@ -269,14 +265,13 @@
void InteropClient::DoRequestStreaming() {
gpr_log(GPR_INFO, "Sending request steaming rpc ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
StreamingInputCallRequest request;
StreamingInputCallResponse response;
std::unique_ptr<ClientWriter<StreamingInputCallRequest>> stream(
- stub->StreamingInputCall(&context, &response));
+ stub_->StreamingInputCall(&context, &response));
int aggregated_payload_size = 0;
for (unsigned int i = 0; i < request_stream_sizes.size(); ++i) {
@@ -295,7 +290,6 @@
void InteropClient::DoResponseStreaming() {
gpr_log(GPR_INFO, "Receiving response steaming rpc ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
StreamingOutputCallRequest request;
@@ -305,7 +299,7 @@
}
StreamingOutputCallResponse response;
std::unique_ptr<ClientReader<StreamingOutputCallResponse>> stream(
- stub->StreamingOutputCall(&context, request));
+ stub_->StreamingOutputCall(&context, request));
unsigned int i = 0;
while (stream->Read(&response)) {
@@ -320,7 +314,6 @@
}
void InteropClient::DoResponseCompressedStreaming() {
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
const CompressionType compression_types[] = {NONE, GZIP, DEFLATE};
const PayloadType payload_types[] = {COMPRESSABLE, UNCOMPRESSABLE, RANDOM};
@@ -348,7 +341,7 @@
StreamingOutputCallResponse response;
std::unique_ptr<ClientReader<StreamingOutputCallResponse>> stream(
- stub->StreamingOutputCall(&context, request));
+ stub_->StreamingOutputCall(&context, request));
size_t k = 0;
while (stream->Read(&response)) {
@@ -401,7 +394,6 @@
void InteropClient::DoResponseStreamingWithSlowConsumer() {
gpr_log(GPR_INFO, "Receiving response steaming rpc with slow consumer ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
StreamingOutputCallRequest request;
@@ -412,7 +404,7 @@
}
StreamingOutputCallResponse response;
std::unique_ptr<ClientReader<StreamingOutputCallResponse>> stream(
- stub->StreamingOutputCall(&context, request));
+ stub_->StreamingOutputCall(&context, request));
int i = 0;
while (stream->Read(&response)) {
@@ -431,12 +423,11 @@
void InteropClient::DoHalfDuplex() {
gpr_log(GPR_INFO, "Sending half-duplex streaming rpc ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
StreamingOutputCallResponse>>
- stream(stub->HalfDuplexCall(&context));
+ stream(stub_->HalfDuplexCall(&context));
StreamingOutputCallRequest request;
ResponseParameters* response_parameter = request.add_response_parameters();
@@ -461,12 +452,11 @@
void InteropClient::DoPingPong() {
gpr_log(GPR_INFO, "Sending Ping Pong streaming rpc ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
StreamingOutputCallResponse>>
- stream(stub->FullDuplexCall(&context));
+ stream(stub_->FullDuplexCall(&context));
StreamingOutputCallRequest request;
request.set_response_type(PayloadType::COMPRESSABLE);
@@ -491,14 +481,13 @@
void InteropClient::DoCancelAfterBegin() {
gpr_log(GPR_INFO, "Sending request steaming rpc ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
StreamingInputCallRequest request;
StreamingInputCallResponse response;
std::unique_ptr<ClientWriter<StreamingInputCallRequest>> stream(
- stub->StreamingInputCall(&context, &response));
+ stub_->StreamingInputCall(&context, &response));
gpr_log(GPR_INFO, "Trying to cancel...");
context.TryCancel();
@@ -509,12 +498,11 @@
void InteropClient::DoCancelAfterFirstResponse() {
gpr_log(GPR_INFO, "Sending Ping Pong streaming rpc ...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
StreamingOutputCallResponse>>
- stream(stub->FullDuplexCall(&context));
+ stream(stub_->FullDuplexCall(&context));
StreamingOutputCallRequest request;
request.set_response_type(PayloadType::COMPRESSABLE);
@@ -534,7 +522,6 @@
void InteropClient::DoTimeoutOnSleepingServer() {
gpr_log(GPR_INFO, "Sending Ping Pong streaming rpc with a short deadline...");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
std::chrono::system_clock::time_point deadline =
@@ -542,7 +529,7 @@
context.set_deadline(deadline);
std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
StreamingOutputCallResponse>>
- stream(stub->FullDuplexCall(&context));
+ stream(stub_->FullDuplexCall(&context));
StreamingOutputCallRequest request;
request.mutable_payload()->set_body(grpc::string(27182, '\0'));
@@ -555,12 +542,11 @@
void InteropClient::DoEmptyStream() {
gpr_log(GPR_INFO, "Starting empty_stream.");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
std::unique_ptr<ClientReaderWriter<StreamingOutputCallRequest,
StreamingOutputCallResponse>>
- stream(stub->FullDuplexCall(&context));
+ stream(stub_->FullDuplexCall(&context));
stream->WritesDone();
StreamingOutputCallResponse response;
GPR_ASSERT(stream->Read(&response) == false);
@@ -571,7 +557,6 @@
void InteropClient::DoStatusWithMessage() {
gpr_log(GPR_INFO, "Sending RPC with a request for status code 2 and message");
- std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
ClientContext context;
SimpleRequest request;
@@ -581,7 +566,7 @@
grpc::string test_msg = "This is a test message";
requested_status->set_message(test_msg);
- Status s = stub->UnaryCall(&context, request, &response);
+ Status s = stub_->UnaryCall(&context, request, &response);
GPR_ASSERT(s.error_code() == grpc::StatusCode::UNKNOWN);
GPR_ASSERT(s.error_message() == test_msg);
diff --git a/test/cpp/interop/interop_client.h b/test/cpp/interop/interop_client.h
index ebecd68..1f13d5b 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -39,6 +39,7 @@
#include <grpc/grpc.h>
#include <grpc++/channel.h>
#include "test/proto/messages.grpc.pb.h"
+#include "test/proto/test.grpc.pb.h"
namespace grpc {
namespace testing {
@@ -80,6 +81,7 @@
void AssertOkOrPrintErrorStatus(const Status& s);
std::shared_ptr<Channel> channel_;
+ std::unique_ptr<TestService::Stub> stub_;
};
} // namespace testing
diff --git a/test/cpp/interop/stress_interop_client.cc b/test/cpp/interop/stress_interop_client.cc
new file mode 100644
index 0000000..7b499a8
--- /dev/null
+++ b/test/cpp/interop/stress_interop_client.cc
@@ -0,0 +1,158 @@
+/*
+ *
+ * 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.
+ *is % allowed in string
+ */
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <grpc++/create_channel.h>
+
+#include "test/cpp/interop/interop_client.h"
+#include "test/cpp/interop/stress_interop_client.h"
+
+namespace grpc {
+namespace testing {
+
+using std::pair;
+using std::string;
+using std::vector;
+
+TestSelector::TestSelector(const vector<pair<TestCaseType, int>>& tests)
+ : tests_(tests) {
+ total_weight_ = 0;
+ for (auto it = tests.begin(); it != tests.end(); it++) {
+ total_weight_ += it->second;
+ }
+}
+
+TestCaseType TestSelector::GetNextTest() const {
+ int random = 0;
+ TestCaseType selected_test = UNKNOWN_TEST;
+
+ // Get a random number from [0 to the total_weight - 1]
+ random = rand() % total_weight_;
+
+ int weight_sofar = 0;
+ for (auto it = tests_.begin(); it != tests_.end(); it++) {
+ weight_sofar += it->second;
+ if (random < weight_sofar) {
+ selected_test = it->first;
+ break;
+ }
+ }
+
+ // It is a bug in the logic if no test is selected at this point
+ GPR_ASSERT(selected_test != UNKNOWN_TEST);
+ return selected_test;
+}
+
+StressTestInteropClient::StressTestInteropClient(
+ int test_id, const string& server_address,
+ const TestSelector& test_selector, long test_duration_secs,
+ long sleep_duration_ms)
+ : test_id_(test_id),
+ server_address_(server_address),
+ test_selector_(test_selector),
+ test_duration_secs_(test_duration_secs),
+ sleep_duration_ms_(sleep_duration_ms) {
+ // TODO(sreek): This will change once we add support for other tests
+ // that won't work with InsecureCredentials()
+ std::shared_ptr<Channel> channel(
+ CreateChannel(server_address, InsecureCredentials()));
+ interop_client_.reset(new InteropClient(channel));
+}
+
+void StressTestInteropClient::MainLoop() {
+ gpr_log(GPR_INFO, "Running test %d. ServerAddr: %s", test_id_,
+ server_address_.c_str());
+
+ gpr_timespec test_end_time =
+ gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+ gpr_time_from_seconds(test_duration_secs_, GPR_TIMESPAN));
+
+ gpr_timespec current_time = gpr_now(GPR_CLOCK_REALTIME);
+ while (test_duration_secs_ < 0 ||
+ gpr_time_cmp(current_time, test_end_time) < 0) {
+ // Select the test case to execute based on the weights and execute it
+ TestCaseType test_case = test_selector_.GetNextTest();
+ gpr_log(GPR_INFO, "%d - Executing the test case %d", test_id_, test_case);
+ RunTest(test_case);
+
+ // Sleep between successive calls if needed
+ if (sleep_duration_ms_ > 0) {
+ gpr_timespec sleep_time = gpr_time_add(
+ current_time, gpr_time_from_millis(sleep_duration_ms_, GPR_TIMESPAN));
+ gpr_sleep_until(sleep_time);
+ }
+
+ current_time = gpr_now(GPR_CLOCK_REALTIME);
+ }
+}
+
+// TODO(sree): Add all interop tests
+void StressTestInteropClient::RunTest(TestCaseType test_case) {
+ switch (test_case) {
+ case EMPTY_UNARY: {
+ interop_client_->DoEmpty();
+ break;
+ }
+ case LARGE_UNARY: {
+ interop_client_->DoLargeUnary();
+ break;
+ }
+ case LARGE_COMPRESSED_UNARY: {
+ interop_client_->DoLargeCompressedUnary();
+ break;
+ }
+ case CLIENT_STREAMING: {
+ interop_client_->DoRequestStreaming();
+ break;
+ }
+ case SERVER_STREAMING: {
+ interop_client_->DoResponseStreaming();
+ break;
+ }
+ case EMPTY_STREAM: {
+ interop_client_->DoEmptyStream();
+ break;
+ }
+ default: {
+ gpr_log(GPR_ERROR, "Invalid test case (%d)", test_case);
+ GPR_ASSERT(false);
+ break;
+ }
+ }
+}
+
+} // namespace testing
+} // namespace grpc
diff --git a/test/cpp/interop/stress_interop_client.h b/test/cpp/interop/stress_interop_client.h
new file mode 100644
index 0000000..7e7af00
--- /dev/null
+++ b/test/cpp/interop/stress_interop_client.h
@@ -0,0 +1,103 @@
+/*
+ *
+ * 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.
+ *is % allowed in string
+ */
+
+#ifndef GRPC_TEST_CPP_STRESS_INTEROP_CLIENT_H
+#define GRPC_TEST_CPP_STRESS_INTEROP_CLIENT_H
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <grpc++/create_channel.h>
+
+#include "test/cpp/interop/interop_client.h"
+
+namespace grpc {
+namespace testing {
+
+using std::pair;
+using std::string;
+using std::vector;
+
+// TODO(sreek): Add more test cases here in future
+enum TestCaseType {
+ UNKNOWN_TEST = -1,
+ EMPTY_UNARY = 0,
+ LARGE_UNARY = 1,
+ LARGE_COMPRESSED_UNARY = 2,
+ CLIENT_STREAMING = 3,
+ SERVER_STREAMING = 4,
+ EMPTY_STREAM = 5
+};
+
+const vector<pair<TestCaseType, string>> kTestCaseList = {
+ {EMPTY_UNARY, "empty_unary"},
+ {LARGE_UNARY, "large_unary"},
+ {LARGE_COMPRESSED_UNARY, "large_compressed_unary"},
+ {CLIENT_STREAMING, "client_streaming"},
+ {SERVER_STREAMING, "server_streaming"},
+ {EMPTY_STREAM, "empty_stream"}};
+
+class TestSelector {
+ public:
+ TestSelector(const vector<pair<TestCaseType, int>>& tests);
+ TestCaseType GetNextTest() const;
+
+ private:
+ const vector<pair<TestCaseType, int>> tests_;
+ int total_weight_;
+};
+
+class StressTestInteropClient {
+ public:
+ StressTestInteropClient(int test_id, const string& server_address,
+ const TestSelector& test_selector,
+ long test_duration_secs, long sleep_duration_ms);
+
+ void MainLoop(); // The main test. Use this as the thread entry point.
+
+ private:
+ void RunTest(TestCaseType test_case);
+
+ int test_id_;
+ std::unique_ptr<InteropClient> interop_client_;
+ const string& server_address_;
+ const TestSelector& test_selector_;
+ long test_duration_secs_;
+ long sleep_duration_ms_;
+};
+
+} // namespace testing
+} // namespace grpc
+
+#endif // GRPC_TEST_CPP_STRESS_INTEROP_CLIENT_H
diff --git a/test/cpp/interop/stress_test.cc b/test/cpp/interop/stress_test.cc
new file mode 100644
index 0000000..5cb1e1f
--- /dev/null
+++ b/test/cpp/interop/stress_test.cc
@@ -0,0 +1,221 @@
+/*
+ *
+ * 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.
+ *is % allowed in string
+ */
+
+#include <memory>
+#include <string>
+#include <thread>
+#include <utility>
+#include <vector>
+
+#include <gflags/gflags.h>
+#include <grpc/support/time.h>
+#include <grpc++/create_channel.h>
+#include <grpc++/grpc++.h>
+
+#include "test/cpp/interop/interop_client.h"
+#include "test/cpp/interop/stress_interop_client.h"
+#include "test/cpp/util/test_config.h"
+
+DEFINE_int32(sleep_duration_ms, 0,
+ "The duration (in millisec) between two"
+ " consecutive test calls (per server) issued by the server.");
+
+DEFINE_int32(test_duration_secs, -1,
+ "The length of time (in seconds) to run"
+ " the test. Enter -1 if the test should run continuously until"
+ " forcefully terminated.");
+
+DEFINE_string(server_addresses, "localhost:8080",
+ "The list of server"
+ " addresses in the format:\n"
+ " \"<name_1>:<port_1>,<name_2>:<port_1>...<name_N>:<port_N>\"\n"
+ " Note: <name> can be servername or IP address.");
+
+// TODO(sreek): Add more test cases here in future
+DEFINE_string(test_cases, "",
+ "List of test cases to call along with the"
+ " relative weights in the following format:\n"
+ " \"<testcase_1:w_1>,<testcase_2:w_2>...<testcase_n:w_n>\"\n"
+ " The following testcases are currently supported:\n"
+ " empty_unary\n"
+ " large_unary\n"
+ " large_compressed_unary\n"
+ " client_streaming\n"
+ " server_streaming\n"
+ " empty_stream\n"
+ " Example: \"empty_unary:20,large_unary:10,empty_stream:70\"\n"
+ " The above will execute 'empty_unary', 20% of the time,"
+ " 'large_unary', 10% of the time and 'empty_stream' the remaining"
+ " 70% of the time");
+
+using std::make_pair;
+using std::pair;
+using std::string;
+using std::thread;
+using std::vector;
+
+using grpc::testing::kTestCaseList;
+using grpc::testing::StressTestInteropClient;
+using grpc::testing::TestCaseType;
+using grpc::testing::TestSelector;
+using grpc::testing::UNKNOWN_TEST;
+
+TestCaseType get_test_type_from_name(const string& test_name) {
+ TestCaseType test_case = UNKNOWN_TEST;
+
+ for (auto it = kTestCaseList.begin(); it != kTestCaseList.end(); it++) {
+ if (test_name == it->second) {
+ test_case = it->first;
+ break;
+ }
+ }
+
+ return test_case;
+}
+
+bool ParseCommaDelimitedString(const string& comma_delimited_str,
+ vector<string>& tokens) {
+ size_t bpos = 0;
+ size_t epos = string::npos;
+
+ while ((epos = comma_delimited_str.find(',', bpos)) != string::npos) {
+ tokens.emplace_back(comma_delimited_str.substr(bpos, epos - bpos));
+ bpos = epos + 1;
+ }
+
+ tokens.emplace_back(comma_delimited_str.substr(bpos)); // Last token
+ return true;
+}
+
+// Input: Test case string "<testcase_name:weight>,<testcase_name:weight>...."
+// Output:
+// - Whether parsing was successful (return value)
+// - Vector of (test_type_enum, weight) pairs
+bool ParseTestCasesString(const string& test_cases,
+ vector<pair<TestCaseType, int>>& tests) {
+ bool is_success = true;
+
+ vector<string> tokens;
+ ParseCommaDelimitedString(test_cases, tokens);
+
+ for (auto it = tokens.begin(); it != tokens.end(); it++) {
+ // Token is in the form <test_name>:<test_weight>
+ size_t colon_pos = it->find(':');
+ if (colon_pos == string::npos) {
+ gpr_log(GPR_ERROR, "Error in parsing test case string: %s", it->c_str());
+ is_success = false;
+ break;
+ }
+
+ string test_name = it->substr(0, colon_pos);
+ int weight = std::stoi(it->substr(colon_pos + 1));
+ TestCaseType test_case = get_test_type_from_name(test_name);
+
+ if (test_case == UNKNOWN_TEST) {
+ gpr_log(GPR_ERROR, "Unknown test case: %s", test_name.c_str());
+ is_success = false;
+ break;
+ }
+
+ tests.emplace_back(std::make_pair(test_case, weight));
+ }
+
+ return is_success;
+}
+
+// For debugging purposes
+void LogParameterInfo(const vector<string>& addresses,
+ const vector<pair<TestCaseType, int>>& tests) {
+ gpr_log(GPR_INFO, "server_addresses: %s", FLAGS_server_addresses.c_str());
+ gpr_log(GPR_INFO, "test_cases : %s", FLAGS_test_cases.c_str());
+ gpr_log(GPR_INFO, "sleep_duration_ms: %d", FLAGS_sleep_duration_ms);
+ gpr_log(GPR_INFO, "test_duration_secs: %d", FLAGS_test_duration_secs);
+
+ int num = 0;
+ for (auto it = addresses.begin(); it != addresses.end(); it++) {
+ gpr_log(GPR_INFO, "%d:%s", ++num, it->c_str());
+ }
+
+ num = 0;
+ for (auto it = tests.begin(); it != tests.end(); it++) {
+ TestCaseType test_case = it->first;
+ int weight = it->second;
+ gpr_log(GPR_INFO, "%d. TestCaseType: %d, Weight: %d", ++num, test_case,
+ weight);
+ }
+}
+
+int main(int argc, char** argv) {
+ grpc::testing::InitTest(&argc, &argv, true);
+ gpr_log(GPR_INFO, "starting test..");
+
+ srand(time(NULL));
+
+ // Parse the server addresses
+ vector<string> server_addresses;
+ ParseCommaDelimitedString(FLAGS_server_addresses, server_addresses);
+
+ // Parse test cases and weights
+ if (FLAGS_test_cases.length() == 0) {
+ gpr_log(GPR_INFO, "Test cases string is empty");
+ return 1;
+ }
+
+ vector<pair<TestCaseType, int>> tests;
+ if (!ParseTestCasesString(FLAGS_test_cases, tests)) {
+ gpr_log(GPR_ERROR, "Error in parsing test cases string %s ",
+ FLAGS_test_cases.c_str());
+ return 1;
+ }
+
+ LogParameterInfo(server_addresses, tests);
+
+ TestSelector test_selector(tests);
+
+ vector<thread> test_threads;
+ int thread_idx = 0;
+ for (auto it = server_addresses.begin(); it != server_addresses.end(); it++) {
+ StressTestInteropClient* client = new StressTestInteropClient(
+ ++thread_idx, *it, test_selector, FLAGS_test_duration_secs,
+ FLAGS_sleep_duration_ms);
+
+ test_threads.emplace_back(
+ thread(&StressTestInteropClient::MainLoop, client));
+ }
+
+ for (auto it = test_threads.begin(); it != test_threads.end(); it++) {
+ it->join();
+ }
+
+ return 0;
+}