info.matsumana.config.AppConfig.java Source code

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Here is the source code for info.matsumana.config.AppConfig.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Manabu Matsuzaki
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package info.matsumana.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.actuate.metrics.CounterService;
import org.springframework.boot.context.embedded.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.io.IOException;

/**
 * 
 *
 * @author matsuzaki
 */
@Configuration
public class AppConfig {

    @Autowired
    CounterService counterService;

    @Bean
    public FilterRegistrationBean filterRegistrationBean() {

        Filter filter = new Filter() {
            @Override
            public void init(FilterConfig filterConfig) throws ServletException {
            }

            @Override
            public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
                    FilterChain filterChain) throws IOException, ServletException {
                try {
                    counterService.increment("active-http-sessions");
                    filterChain.doFilter(servletRequest, servletResponse);
                } finally {
                    counterService.decrement("active-http-sessions");
                }
            }

            @Override
            public void destroy() {
            }
        };

        FilterRegistrationBean registrationBean = new FilterRegistrationBean();

        registrationBean.setFilter(filter);
        registrationBean.addUrlPatterns("/sample/api/*");

        return registrationBean;
    }
}