Subversion Repositories SmartDukaan

package com.spice.profitmandi.web.config;

import java.util.EnumSet;

import javax.servlet.DispatcherType;

import javax.servlet.FilterRegistration;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import javax.servlet.ServletRegistration;

import org.apache.logging.log4j.Logger;

import org.apache.logging.log4j.LogManager;

import org.springframework.web.WebApplicationInitializer;

import org.springframework.web.context.ContextLoaderListener;

import org.springframework.web.context.WebApplicationContext;

import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;

import org.springframework.web.servlet.DispatcherServlet;

import com.spice.profitmandi.common.web.filter.CorsFilter;

import com.spice.profitmandi.web.filter.BrandParamNormalizingFilter;

import com.spice.profitmandi.web.filter.RequestCachingFilter;

public class SpringWebAppInitializer implements WebApplicationInitializer{

	private static final Logger LOGGER=LogManager.getLogger(SpringWebAppInitializer.class);

	private static final String DISPATCHER_SERVLET_NAME="DispatcherServlet";

	private static final String SPRING_CONFIG_PACKAGE_LOCATION="com.spice.profitmandi.web.config";

	public void onStartup(ServletContext servletContext) throws ServletException {

		WebApplicationContext context = getContext();

        servletContext.addListener(new ContextLoaderListener(context));

        ServletRegistration.Dynamic dispatcher = servletContext.addServlet(DISPATCHER_SERVLET_NAME, new DispatcherServlet(context));

        dispatcher.setLoadOnStartup(1);

        dispatcher.addMapping("/");

        FilterRegistration.Dynamic cachingFilter = servletContext.addFilter("requestCachingFilter", new RequestCachingFilter());

        cachingFilter.addMappingForServletNames(null, false, DISPATCHER_SERVLET_NAME);

        // Safety-net for URL '+' decode issue on brand query params. Only touches GET

        // requests with a brand/brands param present; falls back only when the raw value

        // doesn't exist in catalog.brand but "<value>+" does.

        FilterRegistration.Dynamic brandFilter = servletContext.addFilter("brandParamNormalizingFilter", new BrandParamNormalizingFilter());

        brandFilter.addMappingForServletNames(null, false, DISPATCHER_SERVLET_NAME);

        // Register CORS filter to handle CORS for all requests including error responses

        FilterRegistration.Dynamic corsFilter = servletContext.addFilter("corsFilter", new CorsFilter());

        corsFilter.addMappingForUrlPatterns(

                EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.INCLUDE, DispatcherType.ERROR),

                false,

                "/*"

        );

        LOGGER.info("Context is loaded");

	}

	private AnnotationConfigWebApplicationContext getContext() {

        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();

        context.setConfigLocation(SPRING_CONFIG_PACKAGE_LOCATION);

        return context;

    }

}