Class ComponentRegistry<V>

java.lang.Object

io.opentelemetry.sdk.internal.ComponentRegistry<V>

Type Parameters:

V - the type of the registered value.

public final class ComponentRegistry<V>
extends Object

Component (tracer, meter, etc) registry class for all the provider classes (TracerProvider, MeterProvider, etc.).

Components are identified by name, version, and schema. Name is required, but version and schema are optional. Therefore, we have 4 possible scenarios for component keys:

1. Only name is provided, represented by componentByName
2. Name and version are provided, represented by componentByNameAndVersion
3. Name and schema are provided, represented by componentByNameAndSchema
4. Name, version and schema are provided, represented by componentByNameVersionAndSchema

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
private final Set<V>	allComponents
private final Map<String,V>	componentByName
private final Map<String, Map<String,V>>	componentByNameAndSchema
private final Map<String, Map<String,V>>	componentByNameAndVersion
private final Map<String, Map<String, Map<String,V>>>	componentByNameVersionAndSchema
private final Function<InstrumentationScopeInfo, V>	factory
private final Object	lock

Constructor Summary

Constructors

Constructor	Description
ComponentRegistry(Function<InstrumentationScopeInfo, V> factory)

Method Summary

Modifier and Type	Method	Description
private V	buildComponent(InstrumentationScopeInfo instrumentationScopeInfo)
V	get(String name, String version, String schemaUrl, Attributes attributes)	Returns the component associated with the name, version, and schemaUrl.
Collection<V>	getComponents()	Returns a Collection view of the registered components.

Methods inherited from class Object

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

Field Details

componentByName

private final Map<String,V> componentByName

componentByNameAndVersion

private final Map<String, Map<String,V>> componentByNameAndVersion

componentByNameAndSchema

private final Map<String, Map<String,V>> componentByNameAndSchema

componentByNameVersionAndSchema

private final Map<String, Map<String, Map<String,V>>> componentByNameVersionAndSchema

lock

private final Object lock

allComponents

private final Set<V> allComponents

factory

private final Function<InstrumentationScopeInfo, V> factory

Constructor Details

ComponentRegistry

public ComponentRegistry(Function<InstrumentationScopeInfo, V> factory)

Method Details

get

public V get(String name,
 @Nullable
 String version,
 @Nullable
 String schemaUrl,
 Attributes attributes)

Returns the component associated with the name, version, and schemaUrl. Attributes are not part of component identity. Behavior is undefined when different Attributes are provided where name, version, and schemaUrl are identical.

buildComponent

private V buildComponent(InstrumentationScopeInfo instrumentationScopeInfo)

getComponents

public Collection<V> getComponents()

Returns a Collection view of the registered components.

Returns:

a Collection view of the registered components.