observability#

Fully qualified name: omni::observability

namespace observability#

Main namespace for observability related functionality.

Namespace for observability functionality.

This includes telemetry, metrics, and traces. Crash reporting is also related to observability but has its own namespace.

Classes#

ICounter: Counter instrument for monotonically increasing values.
IHistogram: Histogram instrument for recording distributions of values.
IMeter: Factory interface for creating metric instruments.
IObservability: Common interface to help with setting up telemetry related functionality in Carbonite based projects.
IObservabilityProvider: Direct interface for observability functionality based on OpenTelemetry.
IObservableInstrument: Observable instrument that is sampled via callback.
IUpDownCounter: Up/down counter instrument for values that can increase or decrease.
LogMetadata: Metadata storage for a single log message.
Logger: Logger base class.
RefCountedObject: Base class object used to support simple reference counting in an object.
SilentLogger: Simple logger implementation that will silence internal log messages on stderr coming from the omni.observability.core library.
State: Wrapper object to manage the lifetime of the telemetry system.

Functions#

IObservabilityProvider * acquireIObservabilityProvider(): Acquire the main IObservabilityProvider interface.
void add(const carb::ObjectPtr< ICounter< ValueType > > &counter, T value, A &&… a) noexcept: Add a value to a counter with variadic attributes.
void add(const carb::ObjectPtr< ICounter< ValueType > > &counter, T value, std::initializer_list< Attribute > attributes) noexcept: Add a value to a counter with initializer list attributes.
void add(const carb::ObjectPtr< IUpDownCounter< ValueType > > &upDownCounter, T value, std::initializer_list< Attribute > attributes) noexcept: Add a value to an up/down counter with initializer list attributes.
void add(const carb::ObjectPtr< IUpDownCounter< ValueType > > &upDownCounter, T value, A &&… a) noexcept: Add a value to an up/down counter with variadic attributes.
void addArr(const carb::ObjectPtr< ICounter< ValueType > > &counter, T value, const Attribute attributes[], std::size_t attributeCount) noexcept: Add a value to a counter with array attributes.
void addArr(const carb::ObjectPtr< IUpDownCounter< ValueType > > &upDownCounter, T value, const Attribute attributes[], std::size_t attributeCount) noexcept: Add a value to an up/down counter with array attributes.
carb::ObjectPtr< ICounter< ValueType > > createCounter(const carb::ObjectPtr< IMeter > &meter, carb::cpp::string_view name, carb::cpp::string_view description, carb::cpp::string_view unit=""): Create a counter instrument with the specified ValueType.
carb::ObjectPtr< IHistogram< ValueType > > createHistogram(const carb::ObjectPtr< IMeter > &meter, carb::cpp::string_view name, carb::cpp::string_view description, carb::cpp::string_view unit=""): Create a histogram instrument with the specified ValueType.
carb::ObjectPtr< IObservableInstrument > createObservableCounter(const carb::ObjectPtr< IMeter > &meter, ObservableInstrumentCallback< ValueType > callback, void *context, carb::cpp::string_view name, carb::cpp::string_view description, carb::cpp::string_view unit=""): Create an observable counter instrument with the specified ValueType.
carb::ObjectPtr< IObservableInstrument > createObservableUpDownCounter(const carb::ObjectPtr< IMeter > &meter, ObservableInstrumentCallback< ValueType > callback, void *context, carb::cpp::string_view name, carb::cpp::string_view description, carb::cpp::string_view unit=""): Create an observable up/down counter instrument with the specified ValueType.
carb::ObjectPtr< IUpDownCounter< ValueType > > createUpDownCounter(const carb::ObjectPtr< IMeter > &meter, carb::cpp::string_view name, carb::cpp::string_view description, carb::cpp::string_view unit=""): Create an up/down counter instrument with the specified ValueType.
const char * getLogLevelName(LogLevel level): Retrieves the name of a given log level.
void record(const carb::ObjectPtr< IHistogram< ValueType > > &histogram, T value, A &&… a) noexcept: Record a value in a histogram with variadic attributes.
void record(const carb::ObjectPtr< IHistogram< ValueType > > &histogram, T value, std::initializer_list< Attribute > attributes) noexcept: Record a value in a histogram with initializer list attributes.
void recordArr(const carb::ObjectPtr< IHistogram< ValueType > > &histogram, T value, const Attribute attributes[], std::size_t attributeCount) noexcept: Record a value in a histogram with array attributes.

Structs#

InitializeDesc: Descriptor used to initialize telemetry.

Typedefs#

Attribute: Attributes are key-value pairs where the key is a static string (e.g.
InstrumentObserver: Type alias for omni.otel instrument observer.
LogLevel: Base type for a log level value.
LoggerId: An identifier of a single registered logger.
ObservableInstrumentCallback: Type alias for omni.otel observable instrument callback.
ProcessId: A unique identifier for a process.
ResourcePair: Base type used to define a key/value pair used to define a single item to be added to the resource block of each telemetry signal.
ThreadId: A unique identifier for a thread.

Variables#

constexpr int32_t kDefaultEmitLevelSetting: The default value for the kEmitLevelSetting setting.
constexpr char kEmitLevelSetting: Setting path to control the minimum log level that should be emitted over OTLP.
constexpr LoggerId kInvalidLoggerId: The identifier of an invalid logger.
constexpr LogLevel kLogLevelError: Error log level.
constexpr LogLevel kLogLevelInfo: Info log level.
constexpr LogLevel kLogLevelVerbose: Verbose log level.
constexpr LogLevel kLogLevelWarn: Warning log level.
constexpr char kOmniLogsSetupChannel: Channel name for core library logs setup log messages.
constexpr char kOmniMetricsSetupChannel: Channel name for core library metrics setup log messages.
constexpr char kOmniSettingsChannel: Channel name for settings related diagnostics.
constexpr char kOmniTelemetrySetupChannel: Channel name for general core library setup log messages.
constexpr char kOmniTracesSetupChannel: Channel name for core library traces setup log messages.