The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#) https://grpc.io/
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// Copyright 2023 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 OBSERVABILITY_MAIN_H
#define OBSERVABILITY_MAIN_H
#include <stdint.h>
#include <algorithm>
#include <condition_variable>
#include <mutex>
#include <queue>
#include <string>
#include <utility>
#include <vector>
#include "absl/strings/string_view.h"
#include "constants.h"
#include "python_census_context.h"
#include <grpc/status.h>
namespace grpc_observability {
struct CensusData {
DataType type;
std::vector<Label> labels;
// TODO(xuanwn): We can use union here
SpanCensusData span_data;
Measurement measurement_data;
CensusData() {}
CensusData(const Measurement& mm, const std::vector<Label>& labels)
: type(kMetricData), labels(std::move(labels)), measurement_data(mm) {}
CensusData(const SpanCensusData& sd) : type(kSpanData), span_data(sd) {}
};
// extern is required for Cython
extern std::queue<CensusData>* g_census_data_buffer;
extern std::mutex g_census_data_buffer_mutex;
extern std::condition_variable g_census_data_buffer_cv;
void* CreateClientCallTracer(const char* method, const char* target,
const char* trace_id, const char* parent_span_id);
void* CreateServerCallTracerFactory();
void NativeObservabilityInit();
void AwaitNextBatchLocked(std::unique_lock<std::mutex>& lock, int timeout_ms);
void AddCensusDataToBuffer(const CensusData& buffer);
void RecordIntMetric(MetricsName name, int64_t value,
const std::vector<Label>& labels);
void RecordDoubleMetric(MetricsName name, double value,
const std::vector<Label>& labels);
void RecordSpan(const SpanCensusData& span_census_data);
absl::string_view StatusCodeToString(grpc_status_code code);
} // namespace grpc_observability
#endif // OBSERVABILITY_MAIN_H