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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 "src/cpp/util/core_stats.h"
#include <grpc/support/log.h>
using grpc::core::Bucket;
using grpc::core::Histogram;
using grpc::core::Metric;
using grpc::core::Stats;
namespace grpc {
void CoreStatsToProto(const grpc_stats_data& core, Stats* proto) {
for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
Metric* m = proto->add_metrics();
m->set_name(grpc_stats_counter_name[i]);
m->set_count(core.counters[i]);
}
for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
Metric* m = proto->add_metrics();
m->set_name(grpc_stats_histogram_name[i]);
Histogram* h = m->mutable_histogram();
for (int j = 0; j < grpc_stats_histo_buckets[i]; j++) {
Bucket* b = h->add_buckets();
b->set_start(grpc_stats_histo_bucket_boundaries[i][j]);
b->set_count(core.histograms[grpc_stats_histo_start[i] + j]);
}
}
}
void ProtoToCoreStats(const grpc::core::Stats& proto, grpc_stats_data* core) {
memset(core, 0, sizeof(*core));
for (const auto& m : proto.metrics()) {
switch (m.value_case()) {
case Metric::VALUE_NOT_SET:
break;
case Metric::kCount:
for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
if (m.name() == grpc_stats_counter_name[i]) {
core->counters[i] = m.count();
break;
}
}
break;
case Metric::kHistogram:
for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
if (m.name() == grpc_stats_histogram_name[i]) {
const auto& h = m.histogram();
bool valid = true;
if (grpc_stats_histo_buckets[i] != h.buckets_size()) valid = false;
for (int j = 0; valid && j < h.buckets_size(); j++) {
if (grpc_stats_histo_bucket_boundaries[i][j] !=
h.buckets(j).start()) {
valid = false;
}
}
if (!valid) {
gpr_log(GPR_ERROR,
"Found histogram %s but shape is different from proto",
m.name().c_str());
}
for (int j = 0; valid && j < h.buckets_size(); j++) {
core->histograms[grpc_stats_histo_start[i] + j] =
h.buckets(j).count();
}
}
}
break;
}
}
}
} // namespace grpc
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