org/objectweb/proactive/core/node/NodeImpl.java

/* 
 * ################################################################
 * 
 * ProActive: The Java(TM) library for Parallel, Distributed, 
 *            Concurrent computing with Security and Mobility
 * 
 * Copyright (C) 1997-2007 INRIA/University of Nice-Sophia Antipolis
 * Contact: proactive@objectweb.org
 * 
 * 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 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.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *  
 *  Initial developer(s):               The ProActive Team
 *                        http://www.inria.fr/oasis/ProActive/contacts.html
 *  Contributor(s): 
 * 
 * ################################################################
 */ 
package org.objectweb.proactive.core.node;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.ArrayList;

import org.objectweb.proactive.ActiveObjectCreationException;
import org.objectweb.proactive.core.Constants;
import org.objectweb.proactive.core.ProActiveException;
import org.objectweb.proactive.core.body.UniversalBody;
import org.objectweb.proactive.core.mop.ConstructionOfProxyObjectFailedException;
import org.objectweb.proactive.core.mop.MOP;
import org.objectweb.proactive.core.mop.MOPException;
import org.objectweb.proactive.core.runtime.DeployerTag;
import org.objectweb.proactive.core.runtime.ProActiveRuntime;
import org.objectweb.proactive.core.runtime.RuntimeFactory;


public class NodeImpl implements Node, Serializable {
    protected NodeInformation nodeInformation;
    protected ProActiveRuntime proActiveRuntime;
    protected String vnName;
    protected ArrayList fileTransferServicePool;

    //
    // ----------Constructors--------------------
    //
    public NodeImpl() {
    }

    public NodeImpl(ProActiveRuntime proActiveRuntime, String nodeURL,
        String protocol, String jobID) {
        this(proActiveRuntime, nodeURL, protocol, jobID, null);
    }

    public NodeImpl(ProActiveRuntime proActiveRuntime, String nodeURL,
        String protocol, String jobID, String vmName) {
        this.proActiveRuntime = proActiveRuntime;
        this.nodeInformation = new NodeInformationImpl(nodeURL, protocol,
                jobID, vmName, proActiveRuntime.getVMInformation().getDeployerTag());
        this.fileTransferServicePool = new ArrayList();
    }

    //
    //--------------------------Implements Node-----------------------------

    public NodeInformation getNodeInformation() {
        return nodeInformation;
    }

    public ProActiveRuntime getProActiveRuntime() {
        return proActiveRuntime;
    }

    public Object[] getActiveObjects()
        throws NodeException, ActiveObjectCreationException {
        ArrayList bodyArray;
        try {
            bodyArray = this.proActiveRuntime.getActiveObjects(this.nodeInformation.getName());
        } catch (ProActiveException e) {
            throw new NodeException(
                "Cannot get Active Objects registered on this node: " +
                this.nodeInformation.getURL(), e);
        }
        if (bodyArray.size() == 0) {
            return new Object[0];
        } else {
            Object[] stubOnAO = new Object[bodyArray.size()];
            for (int i = 0; i < bodyArray.size(); i++) {
                UniversalBody body = (UniversalBody) ((ArrayList) bodyArray.get(i)).get(0);
                String className = (String) ((ArrayList) bodyArray.get(i)).get(1);
                try {
                    stubOnAO[i] = createStubObject(className, body);
                } catch (MOPException e) {
                    throw new ActiveObjectCreationException("Exception occured when trying to create stub-proxy",
                        e);
                }
            }
            return stubOnAO;
        }
    }

    public int getNumberOfActiveObjects() throws NodeException {
        ArrayList bodyArray;
        try {
            bodyArray = this.proActiveRuntime.getActiveObjects(this.nodeInformation.getName());
        } catch (ProActiveException e) {
            throw new NodeException(
                "Cannot get Active Objects registered on this node: " +
                this.nodeInformation.getURL(), e);
        }
        return bodyArray.size();
    }

    public Object[] getActiveObjects(String className)
        throws NodeException, ActiveObjectCreationException {
        ArrayList bodyArray;
        try {
            bodyArray = this.proActiveRuntime.getActiveObjects(this.nodeInformation.getName(),
                    className);
        } catch (ProActiveException e) {
            throw new NodeException("Cannot get Active Objects of type " +
                className + " registered on this node: " +
                this.nodeInformation.getURL(), e);
        }
        if (bodyArray.size() == 0) {
            throw new NodeException("no ActiveObjects of type " + className +
                " are registered for this node: " +
                this.nodeInformation.getURL());
        } else {
            Object[] stubOnAO = new Object[bodyArray.size()];
            for (int i = 0; i < bodyArray.size(); i++) {
                UniversalBody body = (UniversalBody) bodyArray.get(i);
                try {
                    stubOnAO[i] = createStubObject(className, body);
                } catch (MOPException e) {
                    throw new ActiveObjectCreationException("Exception occured when trying to create stub-proxy",
                        e);
                }
            }
            return stubOnAO;
        }
    }

    private void readObject(ObjectInputStream in)
        throws java.io.IOException, ClassNotFoundException, ProActiveException {
        in.defaultReadObject();
        if (NodeFactory.isNodeLocal(this)) {
            this.proActiveRuntime = RuntimeFactory.getProtocolSpecificRuntime(nodeInformation.getProtocol());
        }
    }

    // -------------------------------------------------------------------------------------------
    // 
    // STUB CREATION
    // 
    // -------------------------------------------------------------------------------------------
    private static Object createStubObject(String className, UniversalBody body)
        throws MOPException {
        return createStubObject(className, null, new Object[] { body });
    }

    private static Object createStubObject(String className,
        Object[] constructorParameters, Object[] proxyParameters)
        throws MOPException {
        try {
            return MOP.newInstance(className, (Class[])null, constructorParameters,
                    Constants.DEFAULT_BODY_PROXY_CLASS_NAME, proxyParameters);

        } catch (ClassNotFoundException e) {
            throw new ConstructionOfProxyObjectFailedException(
                "Class can't be found e=" + e);
        }
    }

    //
    //------------------------INNER CLASS---------------------------------------
    //
    protected class NodeInformationImpl implements NodeInformation {
        private String nodeName;
        private String nodeURL;
        private String protocol;
        private String jobID;
        private java.net.InetAddress hostInetAddress;
        private java.rmi.dgc.VMID hostVMID;
        private String hostname;
        private String vmName;
        private DeployerTag deployerTag;

        public NodeInformationImpl(String url, String protocol, String jobID,
            String vmName, DeployerTag deployerTag) {
            this.nodeURL = url;
            this.hostVMID = proActiveRuntime.getVMInformation().getVMID();
            this.hostInetAddress = proActiveRuntime.getVMInformation()
                                                   .getInetAddress();
            this.hostname = proActiveRuntime.getVMInformation().getHostName();
            this.protocol = protocol;
            this.nodeName = extractNameFromUrl(url);
            this.jobID = jobID;
            this.vmName = vmName;
            this.deployerTag = deployerTag;
        }

        public java.rmi.dgc.VMID getVMID() {
            return hostVMID;
        }

        public String getName() {
            return nodeName;
        }

        public String getProtocol() {
            return protocol;
        }

        public String getURL() {
            return nodeURL;
        }

        public java.net.InetAddress getInetAddress() {
            return hostInetAddress;
        }

        public String getCreationProtocolID() {
            return proActiveRuntime.getVMInformation().getCreationProtocolID();
        }

        public void setCreationProtocolID(String protocolId) {
            //Do nothing since we do not want to be able to set vm infos from Node
        }

        private String extractNameFromUrl(String url) {
            int n = url.lastIndexOf("/");
            String name = url.substring(n + 1);
            return name;
        }

        public String getJobID() {
            return jobID;
        }

        public void setJobID(String jobId) {
            this.jobID = jobId;
        }

        public String getHostName() {
            return this.hostname;
        }

        public String getDescriptorVMName() {
            return vmName;
        }

        public DeployerTag getDeployerTag() {
            return deployerTag;
        }
    }

    // SECURITY

    public void killAllActiveObjects() throws NodeException, IOException {
        ArrayList bodyArray;
        try {
            bodyArray = this.proActiveRuntime.getActiveObjects(this.nodeInformation.getName());
        } catch (ProActiveException e) {
            throw new NodeException(
                "Cannot get Active Objects registered on this node: " +
                this.nodeInformation.getURL(), e);
        }
        for (int i = 0; i < bodyArray.size(); i++) {
            UniversalBody body = (UniversalBody) ((ArrayList) bodyArray.get(i)).get(0);
            body.terminate();
        }
    }

    public Object setProperty(String key, String value)
        throws ProActiveException {
        return this.proActiveRuntime.setLocalNodeProperty(this.nodeInformation.getName(),
            key, value);
    }

    public String getProperty(String key) throws ProActiveException {
        return this.proActiveRuntime.getLocalNodeProperty(this.nodeInformation.getName(),
            key);
    }

}

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