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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013 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
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 */

package org.glassfish.jersey.server.monitoring;

import java.util.Date;
import java.util.Set;

import org.glassfish.jersey.server.ResourceConfig;

/**
 * Monitoring statistics and configuration of an application.
 * 
 * Statistics retrieved from Jersey runtime might be mutable and thanks to it might provide inconsistent data
 * as not all statistics are updated in the same time. To retrieve the immutable and consistent
 * statistics data the method {@link #snapshot()} should be used.
 *
 * @author Miroslav Fuksa (miroslav.fuksa at oracle.com)
 * @see MonitoringStatistics See MonitoringStatistics class for general details about statistics.
 */
public interface ApplicationStatistics {
    /**
     * Get the resource config.
     *
     * @return Resource config.
     */
    public ResourceConfig getResourceConfig();

    /**
     * Get the start time of the application.
     *
     * @return Time when an application initialization has been finished.
     */
    public Date getStartTime();

    /**
     * Get the time when application destroy (stop) has been finished.
     *
     * @return Destroy time.
     *
     * @deprecated deprecated since 2.5 (destroy time will always be {@code null}). Use
     * {@link org.glassfish.jersey.server.spi.ContainerLifecycleListener#onShutdown(org.glassfish.jersey.server.spi.Container)}
     * to listen on the destroy.
     */
    public Date getDestroyTime();


    /**
     * Get resource classes registered by the user in the current application. The set contains only
     * user resource classes and not resource classes added by Jersey
     * or by {@link org.glassfish.jersey.server.model.ModelProcessor}.
     * 

     * User resources are resources that
     * were explicitly registered by the configuration, discovered by the class path scanning or that
     * constructs explicitly registered {@link org.glassfish.jersey.server.model.Resource programmatic resource}.
     *
     * @return Resource user registered classes.
     */
    public Set> getRegisteredClasses();

    /**
     * Get resource instances registered by the user in the current application. The set contains only
     * user resources and not resources added by Jersey
     * or by {@link org.glassfish.jersey.server.model.ModelProcessor}.
     * 

     * User resources are resources that
     * were explicitly registered by the configuration, discovered by the class path scanning or that
     * constructs explicitly registered {@link org.glassfish.jersey.server.model.Resource programmatic resource}.
     *
     * @return Resource instances registered by user.
     */
    public Set