com.liferay.mobile.device.rules.internal.events.MDRServicePreAction.java Source code

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Here is the source code for com.liferay.mobile.device.rules.internal.events.MDRServicePreAction.java

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/**
 * 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.mobile.device.rules.internal.events;

import com.liferay.mobile.device.rules.action.ActionHandlerManagerUtil;
import com.liferay.mobile.device.rules.internal.MDRRuleGroupInstanceImpl;
import com.liferay.mobile.device.rules.model.MDRAction;
import com.liferay.mobile.device.rules.model.MDRRuleGroupInstance;
import com.liferay.mobile.device.rules.rule.RuleGroupProcessorUtil;
import com.liferay.mobile.device.rules.service.MDRActionLocalService;
import com.liferay.portal.kernel.events.Action;
import com.liferay.portal.kernel.events.LifecycleAction;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.mobile.device.Device;
import com.liferay.portal.kernel.mobile.device.DeviceDetectionUtil;
import com.liferay.portal.kernel.mobile.device.UnknownDevice;
import com.liferay.portal.kernel.theme.ThemeDisplay;
import com.liferay.portal.kernel.util.TransientValue;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.util.PropsValues;

import java.util.List;

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

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

/**
 * @author Edward Han
 */
@Component(property = { "key=servlet.service.events.pre" }, service = LifecycleAction.class)
public class MDRServicePreAction extends Action {

    @Override
    public void run(HttpServletRequest request, HttpServletResponse response) {
        ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY);

        Device device = null;

        if (PropsValues.MOBILE_DEVICE_SESSION_CACHE_ENABLED) {
            HttpSession session = request.getSession();

            TransientValue<Device> transientValue = (TransientValue<Device>) session.getAttribute(WebKeys.DEVICE);

            if (transientValue != null) {
                device = transientValue.getValue();
            }

            if (device == null) {
                device = DeviceDetectionUtil.detectDevice(request);

                session.setAttribute(WebKeys.DEVICE, new TransientValue<>(device));
            }
        } else {
            device = DeviceDetectionUtil.detectDevice(request);
        }

        themeDisplay.setDevice(device);

        UnknownDevice unknownDevice = UnknownDevice.getInstance();

        if (device.equals(unknownDevice)) {
            return;
        }

        MDRRuleGroupInstance mdrRuleGroupInstance = null;

        try {
            mdrRuleGroupInstance = RuleGroupProcessorUtil.evaluateRuleGroups(themeDisplay);

            if (_log.isDebugEnabled()) {
                String logMessage = "Rule group evaluation returned rule group instance ";

                if (mdrRuleGroupInstance != null) {
                    logMessage += mdrRuleGroupInstance.getRuleGroupInstanceId();
                } else {
                    logMessage += "null";
                }

                _log.debug(logMessage);
            }
        } catch (Exception e) {
            if (_log.isWarnEnabled()) {
                _log.warn("Unable to retrieve rule group", e);
            }

            return;
        }

        if (mdrRuleGroupInstance == null) {
            return;
        }

        themeDisplay.setMDRRuleGroupInstance(new MDRRuleGroupInstanceImpl(mdrRuleGroupInstance));

        try {
            List<MDRAction> mdrActions = _mdrActionLocalService
                    .getActions(mdrRuleGroupInstance.getRuleGroupInstanceId());

            ActionHandlerManagerUtil.applyActions(mdrActions, request, response);
        } catch (Exception e) {
            if (_log.isWarnEnabled()) {
                _log.warn("Unable to apply device profile", e);
            }
        }
    }

    @Reference(unbind = "-")
    protected void setMDRActionLocalService(MDRActionLocalService mdrActionLocalService) {

        _mdrActionLocalService = mdrActionLocalService;
    }

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

    private MDRActionLocalService _mdrActionLocalService;

}