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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 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 getRegisteredInstances(); /** * Get registered providers available in the runtime. The registered providers * are providers like {@link org.glassfish.jersey.server.model.MethodList.Filter filters}, * {@link javax.ws.rs.ext.ReaderInterceptor reader} and {@link javax.ws.rs.ext.WriterInterceptor writer} * interceptors which are explicitly registered by configuration, or annotated by * {@link javax.ws.rs.ext.Provider @Provider} or registered in META-INF/services. The * set does not include providers that are by default built in Jersey. * * @return Set of provider classes. */ public Set> getProviders(); /** * Get the immutable consistent snapshot of the monitoring statistics. Working with snapshots might * have negative performance impact as snapshot must be created but ensures consistency of data over time. * However, the usage of snapshot is encouraged to avoid working with inconsistent data. Not all statistics * must be updated in the same time on mutable version of statistics. * * @return Snapshot of application statistics. */ public ApplicationStatistics snapshot(); }