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package webapp.runner.launch;

import org.apache.catalina.Context;

public class SessionStore {

  public SessionStore() {
  }

  /**
   * Configures session store
   *
   * @param sessionStore session store name to instantiate
   * @return instance of session manager if available or itself
   */
  public static SessionStore getInstance(String sessionStore) throws ClassNotFoundException, IllegalAccessException, InstantiationException {
    if (sessionStore == null) {
      return null;
    }
    if ("memcache".equals(sessionStore)) {
      return (SessionStore) Class.forName("webapp.runner.launch.MemcacheSessionStore").newInstance();
    } else if ("redis".equals(sessionStore)) {
      return (SessionStore) Class.forName("webapp.runner.launch.RedisSessionStore").newInstance();
    } else {
      return new SessionStore();
    }
  }

  /**
   * Configures default session manager - NOOP
   *
   * @param commandLineParams Arguments map
   * @param ctx               Tomcat context
   */
  public void configureSessionStore(CommandLineParams commandLineParams, Context ctx) {
    // do nothing, let tomcat use the default
    System.out.println("WARNING: session manager " + commandLineParams.sessionStore + " unsupported using default");
  }
}