Class ViewRegistry

java.lang.Object

io.opentelemetry.sdk.metrics.internal.view.ViewRegistry

@Immutable
public final class ViewRegistry
extends Object

Central location for Views to be registered. Registration of a view is done via the SdkMeterProviderBuilder.

This class is internal and is hence not for public use. Its APIs are unstable and can change at any time.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final RegisteredView	DEFAULT_REGISTERED_VIEW
(package private) static final View	DEFAULT_VIEW
private final Map<InstrumentType, RegisteredView>	instrumentDefaultRegisteredView
private static final Logger	logger
private final List<RegisteredView>	registeredViews

Constructor Summary

Constructors

Constructor	Description
ViewRegistry(DefaultAggregationSelector defaultAggregationSelector, CardinalityLimitSelector cardinalityLimitSelector, List<RegisteredView> registeredViews)

Method Summary

Modifier and Type	Method	Description
private static RegisteredView	applyAdviceToDefaultView(RegisteredView instrumentDefaultView, Advice advice)
static ViewRegistry	create()	Return a ViewRegistry using the default aggregation and no views registered.
static ViewRegistry	create(DefaultAggregationSelector defaultAggregationSelector, CardinalityLimitSelector cardinalityLimitSelector, List<RegisteredView> registeredViews)	Returns a ViewRegistry.
List<RegisteredView>	findViews(InstrumentDescriptor descriptor, InstrumentationScopeInfo meterScope)	Returns the metric View for a given instrument.
private static boolean	matchesMeter(InstrumentSelector selector, InstrumentationScopeInfo meterScope)
private static boolean	matchesSelector(InstrumentSelector selector, InstrumentDescriptor descriptor, InstrumentationScopeInfo meterScope)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_VIEW

static final View DEFAULT_VIEW

DEFAULT_REGISTERED_VIEW

static final RegisteredView DEFAULT_REGISTERED_VIEW

logger

private static final Logger logger

instrumentDefaultRegisteredView

private final Map<InstrumentType, RegisteredView> instrumentDefaultRegisteredView

registeredViews

private final List<RegisteredView> registeredViews

Constructor Details

ViewRegistry

ViewRegistry(DefaultAggregationSelector defaultAggregationSelector,
 CardinalityLimitSelector cardinalityLimitSelector,
 List<RegisteredView> registeredViews)

Method Details

create

public static ViewRegistry create(DefaultAggregationSelector defaultAggregationSelector,
 CardinalityLimitSelector cardinalityLimitSelector,
 List<RegisteredView> registeredViews)

Returns a ViewRegistry.

create

public static ViewRegistry create()

Return a ViewRegistry using the default aggregation and no views registered.

findViews

public List<RegisteredView> findViews(InstrumentDescriptor descriptor,
 InstrumentationScopeInfo meterScope)

Returns the metric View for a given instrument.

Parameters:

descriptor - description of the instrument.

Returns:

The list of Views for this instrument, or a default view.

matchesSelector

private static boolean matchesSelector(InstrumentSelector selector,
 InstrumentDescriptor descriptor,
 InstrumentationScopeInfo meterScope)

matchesMeter

private static boolean matchesMeter(InstrumentSelector selector,
 InstrumentationScopeInfo meterScope)

applyAdviceToDefaultView

private static RegisteredView applyAdviceToDefaultView(RegisteredView instrumentDefaultView,
 Advice advice)