Glassfish example source code file (ManagementProxyResource.java)

This example Glassfish source code file (ManagementProxyResource.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

actionreportresult, actionreportresult, context, context, list, list, net, network, override, pathsegment, proxied, proxyimpl, restactionreporter, target_instance_name_path_index, uribuilder, uribuilder, util

The Glassfish ManagementProxyResource.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
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 */

package org.glassfish.admin.rest.resources.custom;

import com.sun.jersey.api.client.Client;
import org.glassfish.admin.rest.results.ActionReportResult;
import org.glassfish.admin.rest.utils.ProxyImpl;
import org.glassfish.admin.rest.utils.xml.RestActionReporter;
import org.jvnet.hk2.component.Habitat;
import org.jvnet.hk2.config.Dom;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.PathSegment;
import javax.ws.rs.core.UriBuilder;
import javax.ws.rs.core.UriInfo;
import java.net.URL;
import java.util.List;
import java.util.Properties;

/**
 * @author Mitesh Meswani
 */
@Produces({"text/html;qs=2", MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
@Path("domain/proxy/{path:.*}")
public class ManagementProxyResource {
    @Context
    protected UriInfo uriInfo;

    @Context
    protected Habitat habitat;

    @Context
    protected Client client;


    @GET
    public ActionReportResult proxyRequest() {

        RestActionReporter ar = new RestActionReporter();
        ar.setActionDescription("Proxied Data");
        ar.setSuccess();

        ActionReportResult result = new ActionReportResult(ar);

        Properties proxiedResponse = new ManagementProxyImpl().proxyRequest(uriInfo, client, habitat);
        ar.setExtraProperties(proxiedResponse);
        return result;
    }

    private static class ManagementProxyImpl extends ProxyImpl {
        private static int TARGET_INSTANCE_NAME_PATH_INDEX = 2; //pathSegments == { "domain", "proxy", "instanceName", ....}
        
        @Override
        public UriBuilder constructTargetURLPath(UriInfo sourceUriInfo, URL responseURLReceivedFromTarget) {
            return sourceUriInfo.getBaseUriBuilder().replacePath(responseURLReceivedFromTarget.getFile());
        }

        @Override
        public UriBuilder constructForwardURLPath(UriInfo sourceUriInfo) {
            // The sourceURI is of the form /mangement/domain/proxy/<instanceName>/forwardSegment1/forwardSegment2/....
            // The forwardURI constructed is of the form /mangement/domain/forwardSegment1/forwardSegment2/....
            List<PathSegment> sourcePathSegments = sourceUriInfo.getPathSegments();
            List<PathSegment> forwardPathSegmentsHead =  sourcePathSegments.subList(0, TARGET_INSTANCE_NAME_PATH_INDEX - 1); //path that precedes proxy/
            List<PathSegment> forwardPathSegmentsTail =  sourcePathSegments.subList(TARGET_INSTANCE_NAME_PATH_INDEX + 1, sourcePathSegments.size()); //path that follows    
            UriBuilder forwardUriBuilder = sourceUriInfo.getBaseUriBuilder(); // Gives /management/domain
            for (PathSegment pathSegment : forwardPathSegmentsHead) { //append domain
                forwardUriBuilder.segment(pathSegment.getPath());
            }

            for (PathSegment pathSegment : forwardPathSegmentsTail) { //append forwardSegment1/forwardSegment2/....
                forwardUriBuilder.segment(pathSegment.getPath());
            }
            return forwardUriBuilder;
        }

        @Override
        public String extractTargetInstanceName(UriInfo uriInfo) {
            return uriInfo.getPathSegments().get(TARGET_INSTANCE_NAME_PATH_INDEX).getPath();
        }
    }

    public void setEntity(Dom p) {
        // ugly no-op hack to keep the generated code happy.
    }

}