org.fabric3.spi.discovery

Interface ConfigurationAgent

public interface ConfigurationAgent

An agent that provides configuration values (e.g. for properties) from an external source such as a key/value store.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getValue(java.lang.String key) Returns the value for the key or null if not found.
void	registerListener(java.lang.String key, java.util.function.Consumer<java.lang.String> listener) Registers a value change listener
void	unregisterListener(java.lang.String key, java.util.function.Consumer<java.lang.String> listener) Un-Registers a value change listener

Method Detail

getValue

java.lang.String getValue(java.lang.String key)

Returns the value for the key or null if not found.

Parameters:

key - the key

Returns:

the value or null

registerListener

void registerListener(java.lang.String key,
                      java.util.function.Consumer<java.lang.String> listener)

Registers a value change listener

Parameters:

key - the key to listen for

listener - the callback to invoke when a value changes

unregisterListener

void unregisterListener(java.lang.String key,
                        java.util.function.Consumer<java.lang.String> listener)

Un-Registers a value change listener

Parameters:

key - the key to listen for

listener - the listener