org.wso2.carbon.identity.gateway.dao.AsyncGatewayContextDAO.java Source code

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Here is the source code for org.wso2.carbon.identity.gateway.dao.AsyncGatewayContextDAO.java

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/*
 * Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.wso2.carbon.identity.gateway.dao;

import org.apache.commons.lang.math.NumberUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.wso2.carbon.identity.gateway.api.context.GatewayMessageContext;
import org.wso2.carbon.identity.gateway.dao.jdbc.JDBCGatewayContextDAO;

import java.util.concurrent.BlockingDeque;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingDeque;

/**
 * AsyncGatewayContextDAO is the class that is done the db operation for GatewayContext in async manner.
 */
public class AsyncGatewayContextDAO extends GatewayContextDAO {

    private static final Logger logger = LoggerFactory.getLogger(AsyncGatewayContextDAO.class);

    private static GatewayContextDAO instance = new AsyncGatewayContextDAO();
    private GatewayContextDAO persistentDAO = JDBCGatewayContextDAO.getInstance();
    private int poolSize = 0;

    private BlockingDeque<GatewayContextPersistenceTask.IdentityContextJob> identityContextJobs = new LinkedBlockingDeque();

    private AsyncGatewayContextDAO() {

        //
        String poolSizeConfig = "2";
        if (NumberUtils.isNumber(poolSizeConfig)) {
            poolSize = Integer.parseInt(poolSizeConfig);
            if (logger.isDebugEnabled()) {
                logger.debug("Thread pool size for Session Async DAO: " + poolSizeConfig);
            }
        }
        if (poolSize > 0) {
            ExecutorService threadPool = Executors.newFixedThreadPool(poolSize);
            for (int i = 0; i < poolSize; i++) {
                threadPool.execute(new GatewayContextPersistenceTask(identityContextJobs, persistentDAO));
            }
            threadPool = Executors.newFixedThreadPool(poolSize);
            for (int i = 0; i < poolSize; i++) {
                threadPool.execute(new GatewayContextPersistenceTask(identityContextJobs, persistentDAO));
            }
        }
    }

    public static GatewayContextDAO getInstance() {
        return instance;
    }

    @Override
    public GatewayMessageContext get(String key) {
        return persistentDAO.get(key);
    }

    @Override
    public void put(String key, GatewayMessageContext context) {

        if (poolSize > 0) {
            GatewayContextPersistenceTask.IdentityContextJob job = new GatewayContextPersistenceTask.IdentityContextJob(
                    key, context);
            identityContextJobs.add(job);
        } else {
            persistentDAO.put(key, context);
        }
    }

    @Override
    public void remove(String key) {

        if (poolSize > 0) {
            GatewayContextPersistenceTask.IdentityContextJob job = new GatewayContextPersistenceTask.IdentityContextJob(
                    key);
            identityContextJobs.add(job);
        } else {
            persistentDAO.remove(key);
        }
    }
}