//
// Copyright 2017 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#ifndef GRPC_TEST_CPP_END2END_COUNTED_SERVICE_H
#define GRPC_TEST_CPP_END2END_COUNTED_SERVICE_H

#include "src/core/lib/gprpp/sync.h"

namespace grpc {
namespace testing {

// A wrapper around an RPC service implementation that provides request and
// response counting.
template <typename ServiceType>
class CountedService : public ServiceType {
 public:
  size_t request_count() {
    grpc_core::MutexLock lock(&mu_);
    return request_count_;
  }

  size_t response_count() {
    grpc_core::MutexLock lock(&mu_);
    return response_count_;
  }

  void IncreaseResponseCount() {
    grpc_core::MutexLock lock(&mu_);
    ++response_count_;
  }
  void IncreaseRequestCount() {
    grpc_core::MutexLock lock(&mu_);
    ++request_count_;
  }

  void ResetCounters() {
    grpc_core::MutexLock lock(&mu_);
    request_count_ = 0;
    response_count_ = 0;
  }

 private:
  grpc_core::Mutex mu_;
  size_t request_count_ ABSL_GUARDED_BY(mu_) = 0;
  size_t response_count_ ABSL_GUARDED_BY(mu_) = 0;
};

}  // namespace testing
}  // namespace grpc

#endif  // GRPC_TEST_CPP_END2END_COUNTED_SERVICE_H