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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include "opentelemetry/resource_detectors/container_detector.h"
#include "opentelemetry/nostd/variant.h"
#include "opentelemetry/resource_detectors/detail/container_detector_utils.h"
#include "opentelemetry/sdk/resource/resource.h"
#include "opentelemetry/sdk/resource/resource_detector.h"
#include "opentelemetry/semconv/incubating/container_attributes.h"
#include "opentelemetry/version.h"
#include <string>
#include <unordered_map>
#include <utility>
OPENTELEMETRY_BEGIN_NAMESPACE
namespace resource_detector
{
/**
* This is the file path from where we can get container.id
*/
constexpr const char *kCGroupPath = "/proc/self/cgroup";
opentelemetry::sdk::resource::Resource ContainerResourceDetector::Detect() noexcept
{
std::string container_id =
opentelemetry::resource_detector::detail::GetContainerIDFromCgroup(kCGroupPath);
if (container_id.empty())
{
return ResourceDetector::Create({});
}
opentelemetry::sdk::resource::ResourceAttributes attributes;
attributes[semconv::container::kContainerId] = std::move(container_id);
return ResourceDetector::Create(attributes);
}
} // namespace resource_detector
OPENTELEMETRY_END_NAMESPACE
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