Java 类org.apache.catalina.session.StoreBase 实例源码

private Manager getSessionManager(Context context)
{
    // Must be set for the persistent manager to work correctly.
    System.setProperty("org.apache.catalina.session.StandardSession.ACTIVITY_CHECK", "true");

    PersistentManager manager = new PersistentManager();
    StoreBase store;

    // Check if Migration has run and setup JDBC persistence
    if( !hibernateMigrationService.hasRunSystemMigration("com.tle.tomcat.migration.CreateTomcatSessionEntity") )
    {
        // Use filestore until JDBC setup complete
        LOGGER.info("Setting up temporary file session store");
        FileStore fileStore = new FileStore();
        fileStore.setDirectory(System.getProperty("java.io.tmpdir"));
        store = fileStore;
    }
    else
    {
        LOGGER.info("Setting up JDBC session store");
        JDBCStore jdbcStore = new JDBCStore();
        jdbcStore.setConnectionURL(dataSourceService.getSystemUrl());
        jdbcStore.setConnectionName(dataSourceService.getSystemUsername());
        jdbcStore.setConnectionPassword(dataSourceService.getSystemPassword());
        jdbcStore.setDriverName(dataSourceService.getDriverClass());
        jdbcStore.setSessionTable("tomcat_sessions");
        store = jdbcStore;
    }

    manager.setContext(context);
    manager.setProcessExpiresFrequency(3); // Every 30 seconds
    manager.setStore(store);
    // Persist immediately but leave in memory
    manager.setMaxIdleBackup(0);
    // Don't remove from memory for 30 minutes
    manager.setMaxIdleSwap((int) TimeUnit.MINUTES.toSeconds(30));

    return manager;
}

@Override
public void processExpires() {
  log.debug("Processing expired sessions");
  if (store instanceof StoreBase) {
    ((StoreBase) store).processExpires();
  }
}