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/*
*
* 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.
*is % allowed in string
*/
#include "test/cpp/interop/stress_interop_client.h"
#include <memory>
#include <string>
#include <vector>
#include <grpc++/create_channel.h>
#include "test/cpp/interop/interop_client.h"
#include "test/cpp/util/metrics_server.h"
namespace grpc {
namespace testing {
using std::pair;
using std::vector;
WeightedRandomTestSelector::WeightedRandomTestSelector(
const vector<pair<TestCaseType, int>>& tests)
: tests_(tests) {
total_weight_ = 0;
for (auto it = tests.begin(); it != tests.end(); it++) {
total_weight_ += it->second;
}
}
// Returns a weighted-randomly selected test case based on the test weights
// passed in the constructror
TestCaseType WeightedRandomTestSelector::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 grpc::string& server_address,
std::shared_ptr<Channel> channel,
const WeightedRandomTestSelector& test_selector, long test_duration_secs,
long sleep_duration_ms, long metrics_collection_interval_secs)
: test_id_(test_id),
server_address_(server_address),
channel_(channel),
interop_client_(new InteropClient(channel, false)),
test_selector_(test_selector),
test_duration_secs_(test_duration_secs),
sleep_duration_ms_(sleep_duration_ms),
metrics_collection_interval_secs_(metrics_collection_interval_secs) {}
void StressTestInteropClient::MainLoop(std::shared_ptr<Gauge> qps_gauge) {
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);
gpr_timespec next_stat_collection_time = current_time;
gpr_timespec collection_interval =
gpr_time_from_seconds(metrics_collection_interval_secs_, GPR_TIMESPAN);
long num_calls_per_interval = 0;
while (test_duration_secs_ < 0 ||
gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), 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_DEBUG, "%d - Executing the test case %d", test_id_, test_case);
RunTest(test_case);
num_calls_per_interval++;
// See if its time to collect stats yet
current_time = gpr_now(GPR_CLOCK_REALTIME);
if (gpr_time_cmp(next_stat_collection_time, current_time) < 0) {
qps_gauge->Set(num_calls_per_interval /
metrics_collection_interval_secs_);
num_calls_per_interval = 0;
next_stat_collection_time =
gpr_time_add(current_time, collection_interval);
}
// Sleep between successive calls if needed
if (sleep_duration_ms_ > 0) {
gpr_timespec sleep_time =
gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
gpr_time_from_millis(sleep_duration_ms_, GPR_TIMESPAN));
gpr_sleep_until(sleep_time);
}
}
}
// 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
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