40 lines
919 B
Java
40 lines
919 B
Java
package org.gcube.smartgears.lifecycle;
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/**
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* The lifecycle of an application managed as a gCube service.
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*
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* @author Fabio Simeoni
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*
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*/
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public interface Lifecycle<S extends State<S>> {
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/**
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* Returns the state from which this lifecycle transitioned to its current state.
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* @return the previous state
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*/
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S previous();
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/**
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* Returns the current state of this lifecycle.
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* @return the current state.
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*/
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S state();
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/**
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* Transition this lifecycle to a given state.
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* @param state the state
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*
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* @throws IllegalStateException if the transition is illegal for this lifecycle
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*/
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void moveTo(S state);
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/**
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* Attempts to transition this lifecycle to a given state, but does not fail if the transition is illegal for this lifecycle.
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* @param state the state
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* @return <code>true<code> if this lifecycle has transitioned to the given state
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*/
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boolean tryMoveTo(S state);
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}
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