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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package org.glassfish.hk2.api;

import org.jvnet.hk2.annotations.Contract;

/**
 * This interface should be implemented by those who wish to be
 * notified of error conditions that occur within HK2.  These
 * errors are those that might happen during normal processing of
 * HK2 requests but which are not otherwise reported up the
 * calling stack frame.
 * 
 * An implementation of ErrorService must be in the Singleton scope
 * 
 * @author jwells
 *
 */
@Contract
public interface ErrorService {
    /**
     * This method is called when a failure occurs in the system.  This method may
     * use any {@link ServiceLocator} api.  For example, an implementation of this method might want
     * to remove a descriptor from the registry if the error can be determined to be a
     * permanent failure.
     * 
     * @param errorInformation Information about the error that occurred
     * @throws MultiException if this method throws an exception that exception will be thrown back to
     * the caller wrapped in another MultiException if the error is of type {@link ErrorType#FAILURE_TO_REIFY}.
     * If the error is of type {@link ErrorType#DYNAMIC_CONFIGURATION_FAILURE} then any exception thrown from this
     * method is ignored and the original exception is thrown back to the {@link DynamicConfiguration#commit()} method
     */
    public void onFailure(ErrorInformation errorInformation)
        throws MultiException;

}