config-model-api/src/main/java/com/yahoo/config/model/api/SuperModelListener.java


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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.model.api;

import com.yahoo.config.provision.ApplicationId;

/**
 * Interface for those wanting to be notified about changes to the SuperModel.
 */
public interface SuperModelListener {

    /**
     * Application has been activated: Either deployed the first time,
     * internally redeployed, or externally triggered redeploy.
     */
    void applicationActivated(SuperModel superModel, ApplicationInfo application);

    /**
     * Application has been removed.
     */
    void applicationRemoved(SuperModel superModel, ApplicationId id);

    /**
     * Invoked once all applications that were supposed to be deployed on bootstrap
     * have been activated (and the respective {@link #applicationActivated(SuperModel, ApplicationInfo)
     * applicationActivated} have been invoked). The SuperModel is then said to be "complete".
     */
    void notifyOfCompleteness(SuperModel superModel);

}