io.wcm.samples.handler.controller.http.Redirect.java Source code

Introduction

Here is the source code for io.wcm.samples.handler.controller.http.Redirect.java

Source

/*
 * #%L
 * wcm.io
 * %%
 * Copyright (C) 2014 wcm.io
 * %%
 * Licensed 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.
 * #L%
 */
package io.wcm.samples.handler.controller.http;

import io.wcm.handler.link.LinkHandler;
import io.wcm.sling.models.annotations.AemObject;

import java.io.IOException;

import javax.annotation.PostConstruct;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.Self;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;
import org.apache.sling.models.annotations.injectorspecific.ValueMapValue;

import com.day.cq.wcm.api.WCMMode;

/**
 * Sets redirect header.
 */
@Model(adaptables = SlingHttpServletRequest.class)
public class Redirect {

    @SlingObject
    private Resource resource;
    @Self
    private LinkHandler linkHandler;
    @SlingObject
    private SlingHttpServletResponse response;
    @AemObject
    private WCMMode wcmMode;
    @ValueMapValue(optional = true)
    private String redirectStatus;

    private boolean renderPage = true;

    @PostConstruct
    protected void activate() throws IOException {
        // resolve link of redirect page
        String redirectUrl = linkHandler.get(resource).buildUrl();

        // in preview/publish mode redirect to target
        if ((wcmMode == WCMMode.DISABLED || wcmMode == WCMMode.PREVIEW) && StringUtils.isNotEmpty(redirectUrl)) {
            if (StringUtils.equals(redirectStatus, "301")) {
                response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
                response.setHeader("Location", redirectUrl);
            } else {
                response.sendRedirect(redirectUrl);
            }
            renderPage = false;
        } else if (wcmMode == WCMMode.DISABLED) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            renderPage = false;
        }
    }

    /**
     * @return true if redirect page should be rendered
     */
    public boolean isRenderPage() {
        return renderPage;
    }

}