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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include <chrono>
#include <mutex>
#include <utility>
#include "opentelemetry/common/key_value_iterable.h"
#include "opentelemetry/metrics/meter.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/nostd/span.h"
#include "opentelemetry/nostd/string_view.h"
#include "opentelemetry/sdk/common/global_log_handler.h"
#include "opentelemetry/sdk/instrumentationscope/instrumentation_scope.h"
#include "opentelemetry/sdk/instrumentationscope/scope_configurator.h"
#include "opentelemetry/sdk/metrics/export/metric_filter.h"
#include "opentelemetry/sdk/metrics/meter.h"
#include "opentelemetry/sdk/metrics/meter_config.h"
#include "opentelemetry/sdk/metrics/meter_context.h"
#include "opentelemetry/sdk/metrics/meter_provider.h"
#include "opentelemetry/sdk/metrics/metric_reader.h"
#include "opentelemetry/sdk/metrics/view/instrument_selector.h"
#include "opentelemetry/sdk/metrics/view/meter_selector.h"
#include "opentelemetry/sdk/metrics/view/view.h"
#include "opentelemetry/sdk/metrics/view/view_registry.h"
#include "opentelemetry/sdk/resource/resource.h"
#include "opentelemetry/version.h"
#ifdef ENABLE_METRICS_EXEMPLAR_PREVIEW
# include "opentelemetry/sdk/metrics/exemplar/filter_type.h"
#endif // ENABLE_METRICS_EXEMPLAR_PREVIEW
OPENTELEMETRY_BEGIN_NAMESPACE
namespace sdk
{
namespace metrics
{
namespace resource = opentelemetry::sdk::resource;
namespace metrics_api = opentelemetry::metrics;
MeterProvider::MeterProvider(std::unique_ptr<MeterContext> context) noexcept
: context_(std::move(context))
{}
MeterProvider::MeterProvider(std::unique_ptr<ViewRegistry> views,
const sdk::resource::Resource &resource,
std::unique_ptr<instrumentationscope::ScopeConfigurator<MeterConfig>>
meter_configurator) noexcept
: context_(
std::make_shared<MeterContext>(std::move(views), resource, std::move(meter_configurator)))
{
OTEL_INTERNAL_LOG_DEBUG("[MeterProvider] MeterProvider created.");
}
#if OPENTELEMETRY_ABI_VERSION_NO >= 2
nostd::shared_ptr<metrics_api::Meter> MeterProvider::GetMeter(
nostd::string_view name,
nostd::string_view version,
nostd::string_view schema_url,
const opentelemetry::common::KeyValueIterable *attributes) noexcept
#else
nostd::shared_ptr<metrics_api::Meter> MeterProvider::GetMeter(
nostd::string_view name,
nostd::string_view version,
nostd::string_view schema_url) noexcept
#endif
{
#if OPENTELEMETRY_ABI_VERSION_NO < 2
const opentelemetry::common::KeyValueIterable *attributes = nullptr;
#endif
if (name.data() == nullptr || name == "")
{
OTEL_INTERNAL_LOG_WARN("[MeterProvider::GetMeter] Library name is empty.");
name = "";
}
const std::lock_guard<std::mutex> guard(lock_);
for (auto &meter : context_->GetMeters())
{
auto meter_lib = meter->GetInstrumentationScope();
if (meter_lib->equal(name, version, schema_url, attributes))
{
return nostd::shared_ptr<metrics_api::Meter>{meter};
}
}
instrumentationscope::InstrumentationScopeAttributes attrs_map(attributes);
auto scope =
instrumentationscope::InstrumentationScope::Create(name, version, schema_url, attrs_map);
auto meter = std::shared_ptr<Meter>(new Meter(context_, std::move(scope)));
context_->AddMeter(meter);
return nostd::shared_ptr<metrics_api::Meter>{meter};
}
#if OPENTELEMETRY_ABI_VERSION_NO >= 2
void MeterProvider::RemoveMeter(nostd::string_view name,
nostd::string_view version,
nostd::string_view schema_url) noexcept
{
if (name.data() == nullptr || name == "")
{
OTEL_INTERNAL_LOG_WARN("[MeterProvider::RemoveMeter] Library name is empty.");
name = "";
}
const std::lock_guard<std::mutex> guard(lock_);
context_->RemoveMeter(name, version, schema_url);
}
#endif
const resource::Resource &MeterProvider::GetResource() const noexcept
{
return context_->GetResource();
}
void MeterProvider::AddMetricReader(std::shared_ptr<MetricReader> reader,
std::unique_ptr<MetricFilter> metric_filter) noexcept
{
context_->AddMetricReader(std::move(reader), std::move(metric_filter));
}
void MeterProvider::AddView(std::unique_ptr<InstrumentSelector> instrument_selector,
std::unique_ptr<MeterSelector> meter_selector,
std::unique_ptr<View> view) noexcept
{
context_->AddView(std::move(instrument_selector), std::move(meter_selector), std::move(view));
}
#ifdef ENABLE_METRICS_EXEMPLAR_PREVIEW
void MeterProvider::SetExemplarFilter(metrics::ExemplarFilterType exemplar_filter_type) noexcept
{
context_->SetExemplarFilter(exemplar_filter_type);
}
#endif // ENABLE_METRICS_EXEMPLAR_PREVIEW
/**
* Shutdown the meter provider.
*/
bool MeterProvider::Shutdown(std::chrono::microseconds timeout) noexcept
{
return context_->Shutdown(timeout);
}
/**
* Force flush the meter provider.
*/
bool MeterProvider::ForceFlush(std::chrono::microseconds timeout) noexcept
{
return context_->ForceFlush(timeout);
}
/**
* Shutdown MeterContext when MeterProvider is destroyed.
*
*/
MeterProvider::~MeterProvider()
{
if (context_)
{
context_->Shutdown();
}
}
} // namespace metrics
} // namespace sdk
OPENTELEMETRY_END_NAMESPACE
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