SPAFilter.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.frontend.js.spa.web.internal.servlet.filter;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.servlet.BaseFilter;
import com.liferay.portal.kernel.servlet.BrowserSniffer;
import com.liferay.portal.kernel.servlet.TryFilter;
import com.liferay.portal.kernel.util.Http;

import javax.servlet.Filter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

/**
 * @author Chema Balsas
 */
@Component(
	immediate = true,
	property = {
		"servlet-context-name=", "servlet-filter-name=SPA Filter",
		"url-pattern=/*",
		"url-regex-ignore-pattern=^/html/.+\\.(css|gif|html|ico|jpg|js|png)(\\?.*)?$"
	},
	service = Filter.class
)
public class SPAFilter extends BaseFilter implements TryFilter {

	@Override
	public Object doFilterTry(
			HttpServletRequest request, HttpServletResponse response)
		throws Exception {

		response.setHeader("X-Request-URL", _http.getCompleteURL(request));

		return null;
	}

	@Override
	public boolean isFilterEnabled(
		HttpServletRequest request, HttpServletResponse response) {

		return _browserSniffer.isIe(request);
	}

	@Override
	protected Log getLog() {
		return _log;
	}

	private static final Log _log = LogFactoryUtil.getLog(SPAFilter.class);

	@Reference
	private BrowserSniffer _browserSniffer;

	@Reference
	private Http _http;

}