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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/lib/debug/stats.h"
#include <stddef.h>
#include <algorithm>
#include <vector>
#include "y_absl/strings/str_cat.h"
#include "y_absl/strings/str_join.h"
namespace grpc_core {
namespace stats_detail {
namespace {
template <typename I>
TString ArrayToJson(y_absl::Span<const I> values) {
std::vector<TString> parts;
for (auto value : values) {
parts.push_back(y_absl::StrCat(value));
}
return y_absl::StrCat("[", y_absl::StrJoin(parts, ","), "]");
}
} // namespace
TString StatsAsJson(y_absl::Span<const uint64_t> counters,
y_absl::Span<const y_absl::string_view> counter_name,
y_absl::Span<const HistogramView> histograms,
y_absl::Span<const y_absl::string_view> histogram_name) {
std::vector<TString> parts;
for (size_t i = 0; i < counters.size(); i++) {
parts.push_back(y_absl::StrCat("\"", counter_name[i], "\": ", counters[i]));
}
for (size_t i = 0; i < histograms.size(); i++) {
parts.push_back(
y_absl::StrCat("\"", histogram_name[i], "\": ",
ArrayToJson(y_absl::Span<const uint64_t>(
histograms[i].buckets, histograms[i].num_buckets))));
parts.push_back(y_absl::StrCat(
"\"", histogram_name[i], "_bkt\": ",
ArrayToJson(y_absl::Span<const int>(histograms[i].bucket_boundaries,
histograms[i].num_buckets))));
}
return y_absl::StrCat("{", y_absl::StrJoin(parts, ", "), "}");
}
} // namespace stats_detail
} // namespace grpc_core
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