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/*
*
* 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.
*
*/
#include <grpc/support/port_platform.h>
#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h"
#include <string.h>
#include <grpc/support/atm.h>
#include <grpc/support/string_util.h>
namespace grpc_core {
void GrpcLbClientStats::AddCallStarted() {
gpr_atm_full_fetch_add(&num_calls_started_, (gpr_atm)1);
}
void GrpcLbClientStats::AddCallFinished(
bool finished_with_client_failed_to_send, bool finished_known_received) {
gpr_atm_full_fetch_add(&num_calls_finished_, (gpr_atm)1);
if (finished_with_client_failed_to_send) {
gpr_atm_full_fetch_add(&num_calls_finished_with_client_failed_to_send_,
(gpr_atm)1);
}
if (finished_known_received) {
gpr_atm_full_fetch_add(&num_calls_finished_known_received_, (gpr_atm)1);
}
}
void GrpcLbClientStats::AddCallDroppedLocked(char* token) {
// Increment num_calls_started and num_calls_finished.
gpr_atm_full_fetch_add(&num_calls_started_, (gpr_atm)1);
gpr_atm_full_fetch_add(&num_calls_finished_, (gpr_atm)1);
// Record the drop.
if (drop_token_counts_ == nullptr) {
drop_token_counts_.reset(New<DroppedCallCounts>());
}
for (size_t i = 0; i < drop_token_counts_->size(); ++i) {
if (strcmp((*drop_token_counts_)[i].token.get(), token) == 0) {
++(*drop_token_counts_)[i].count;
return;
}
}
// Not found, so add a new entry.
drop_token_counts_->emplace_back(UniquePtr<char>(gpr_strdup(token)), 1);
}
namespace {
void AtomicGetAndResetCounter(int64_t* value, gpr_atm* counter) {
*value = static_cast<int64_t>(gpr_atm_full_xchg(counter, (gpr_atm)0));
}
} // namespace
void GrpcLbClientStats::GetLocked(
int64_t* num_calls_started, int64_t* num_calls_finished,
int64_t* num_calls_finished_with_client_failed_to_send,
int64_t* num_calls_finished_known_received,
UniquePtr<DroppedCallCounts>* drop_token_counts) {
AtomicGetAndResetCounter(num_calls_started, &num_calls_started_);
AtomicGetAndResetCounter(num_calls_finished, &num_calls_finished_);
AtomicGetAndResetCounter(num_calls_finished_with_client_failed_to_send,
&num_calls_finished_with_client_failed_to_send_);
AtomicGetAndResetCounter(num_calls_finished_known_received,
&num_calls_finished_known_received_);
*drop_token_counts = std::move(drop_token_counts_);
}
} // namespace grpc_core
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