package com.javaweb.framework.shiro.web.session;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import org.apache.shiro.session.mgt.DefaultSessionManager;
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import org.apache.shiro.session.mgt.SessionValidationScheduler;
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import org.apache.shiro.session.mgt.ValidatingSessionManager;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.context.annotation.Lazy;
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import org.springframework.stereotype.Component;
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import com.javaweb.common.utils.Threads;
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/**
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* 自定义任务调度器完成
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*
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* @author ruoyi
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*/
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@Component
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public class SpringSessionValidationScheduler implements SessionValidationScheduler
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{
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private static final Logger log = LoggerFactory.getLogger(SpringSessionValidationScheduler.class);
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public static final long DEFAULT_SESSION_VALIDATION_INTERVAL = DefaultSessionManager.DEFAULT_SESSION_VALIDATION_INTERVAL;
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/**
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* 定时器，用于处理超时的挂起请求，也用于连接断开时的重连。
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*/
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@Autowired
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@Qualifier("scheduledExecutorService")
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private ScheduledExecutorService executorService;
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private volatile boolean enabled = false;
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/**
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* 会话验证管理器
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*/
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@Autowired
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@Qualifier("sessionManager")
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@Lazy
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private ValidatingSessionManager sessionManager;
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// 相隔多久检查一次session的有效性，单位毫秒，默认就是10分钟
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@Value("${shiro.session.validationInterval}")
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private long sessionValidationInterval;
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@Override
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public boolean isEnabled()
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{
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return this.enabled;
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}
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/**
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* Specifies how frequently (in milliseconds) this Scheduler will call the
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* {@link org.apache.shiro.session.mgt.ValidatingSessionManager#validateSessions()
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* ValidatingSessionManager#validateSessions()} method.
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*
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* <p>
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* Unless this method is called, the default value is {@link #DEFAULT_SESSION_VALIDATION_INTERVAL}.
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*
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* @param sessionValidationInterval
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*/
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public void setSessionValidationInterval(long sessionValidationInterval)
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{
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this.sessionValidationInterval = sessionValidationInterval;
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}
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/**
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* Starts session validation by creating a spring PeriodicTrigger.
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*/
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@Override
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public void enableSessionValidation()
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{
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enabled = true;
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if (log.isDebugEnabled())
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{
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log.debug("Scheduling session validation job using Spring Scheduler with "
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+ "session validation interval of [" + sessionValidationInterval + "]ms...");
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}
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try
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{
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executorService.scheduleAtFixedRate(new Runnable()
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{
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@Override
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public void run()
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{
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if (enabled)
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{
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sessionManager.validateSessions();
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}
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}
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}, 1000, sessionValidationInterval * 60 * 1000, TimeUnit.MILLISECONDS);
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this.enabled = true;
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if (log.isDebugEnabled())
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{
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log.debug("Session validation job successfully scheduled with Spring Scheduler.");
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}
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}
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catch (Exception e)
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{
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if (log.isErrorEnabled())
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{
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log.error("Error starting the Spring Scheduler session validation job. Session validation may not occur.", e);
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}
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}
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}
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@Override
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public void disableSessionValidation()
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{
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if (log.isDebugEnabled())
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{
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log.debug("Stopping Spring Scheduler session validation job...");
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}
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if (this.enabled)
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{
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Threads.shutdownAndAwaitTermination(executorService);
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}
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this.enabled = false;
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}
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}
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