com.netflix.archaius.api

Interface ConfigListener

public interface ConfigListener

Listener for property updates. Due to the cascading nature of property value resolution there's not much value in specifying the value or differentiating between set, add and delete. Instead the listener is expected to fetch the property value from the config.

Method Summary

Modifier and Type	Method and Description
void	onConfigAdded(Config config) Notification that a configuration was added.
void	onConfigRemoved(Config config) Notification that a configuration was removed.
void	onConfigUpdated(Config config) Notify the listener that the entire configuration of a child has changed.
void	onError(java.lang.Throwable error, Config config) Notify of an error in the configuration listener.

Method Detail

onConfigAdded

void onConfigAdded(Config config)

Notification that a configuration was added. This will normally only be called for CompositeConfig derived implementations.

Parameters:

config -

onConfigRemoved

void onConfigRemoved(Config config)

Notification that a configuration was removed. This will normally only be called for CompositeConfig derived implementations.

Parameters:

config -

onConfigUpdated

void onConfigUpdated(Config config)

Notify the listener that the entire configuration of a child has changed. This is normally in response to a snapshot update to a dynamic configuration. A listener will likely respond to this by invalidating the entire property registration cache as it is more efficient than trying to determine the delta.

Parameters:

config -

onError

void onError(java.lang.Throwable error,
             Config config)

Notify of an error in the configuration listener. The error indicates that the DyanmicConfig was not able to update its configuration. The DynamicConfig should maintain the last known good state

Parameters:

error -