Module io.helidon.config

Package io.helidon.config.spi

Interface WatchableSource<T>

Type Parameters:

T - Type of target of this config source

All Known Implementing Classes:

DirectoryConfigSource, EtcdConfigSource, FileConfigSource, FileOverrideSource, UrlConfigSource, UrlOverrideSource

public interface WatchableSource<T>

A source implementing this interface provides a target that a ChangeWatcher can use.

See Also:

• ChangeWatcher

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	WatchableSource.Builder<B extends WatchableSource.Builder<B,T>,T>	A builder for a watchable source.

Method Summary

Modifier and Type	Method	Description
Optional<ChangeWatcher<Object>>	changeWatcher()	If a change watcher is configured with this source, return it.
T	target()	The target of this source.
default Class<T>	targetType()	Target type as supported by this source.

Method Details

targetType

default Class<T> targetType()

Target type as supported by this source.

Returns:

class of the target, by default used for target()

target

T target()

The target of this source.

Returns:

target this source is configured with, never null

changeWatcher

Optional<ChangeWatcher<Object>> changeWatcher()

If a change watcher is configured with this source, return it. The source implementation does not need to handle change watcher .

Returns:

change watcher if one is configured on this source