component.hpp

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#pragma once
 
/// @file userver/otlp/logs/component.hpp
/// @brief @copybrief otlp::logs::Component
 
#include <memory>
#include <string>
 
#include <userver/components/component_fwd.hpp>
#include <userver/components/raw_component_base.hpp>
#include <userver/logging/fwd.hpp>
#include <userver/utils/statistics/entry.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace otlp {
 
class Logger;
 
// clang-format off
 
/// @ingroup userver_components
///
/// @brief Component to configure logging via OTLP collector.
///
/// ## Static options:
/// Name | Description | Default value
/// ---- | ----------- | -------------
/// endpoint | URI of otel collector (e.g. 127.0.0.1:4317) | -
/// max-queue-size | Maximum async queue size | 65535
/// max-batch-delay | Maximum batch delay | 100ms
/// service-name | Service name | unknown_service
/// attributes | Extra attributes for OTLP, object of key/value strings | -
/// sinks | List of sinks | -
/// sinks.logs | sink for logs (default|otlp|both) | otlp
/// sinks.tracing | sink for tracing (default|otlp|both) | otlp
///
/// Possible sink values:
/// * `otlp`: OTLP exporter
/// * `default`: _default_ logger from the `logging` component
/// * `both`: _default_ logger and OTLP exporter
 
// clang-format on
class LoggerComponent final : public components::RawComponentBase {
public:
    static constexpr std::string_view kName = "otlp-logger";
 
    LoggerComponent(const components::ComponentConfig&, const components::ComponentContext&);
 
    ~LoggerComponent();
 
    static yaml_config::Schema GetStaticConfigSchema();
 
private:
    std::shared_ptr<Logger> logger_;
    logging::LoggerRef old_logger_;
    utils::statistics::Entry statistics_holder_;
};
 
}  // namespace otlp
 
USERVER_NAMESPACE_END