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tao
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/**
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* '$RCSfile$'
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* Copyright: 2000-2015 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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*
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* '$Author: $'
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* '$Date: $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.dataone;
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import java.util.List;
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import org.dataone.client.v2.CNode;
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import org.dataone.client.v2.itk.D1Client;
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import org.dataone.service.exceptions.InvalidRequest;
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import org.dataone.service.exceptions.NotImplemented;
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import org.dataone.service.exceptions.ServiceFailure;
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import org.dataone.service.types.v1.Node;
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import org.dataone.service.types.v1.NodeList;
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import org.dataone.service.types.v1.NodeReference;
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import org.dataone.service.types.v1.Service;
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import org.dataone.service.types.v1.Services;
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/**
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* This class will contact the CN to figure out the version of the service
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* for the given node
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* @author tao
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*
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*/
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public class D1NodeVersionChecker {
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public static final String V1 = "v1";
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public static final String V2 = "v2";
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public static final String HIGHESTVERSION = V2;
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public static final String SECONDHIGHESTVERSION = V1;
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private NodeReference nodeId = null;
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/**
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* Constructor
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* @param nodeId
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*/
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public D1NodeVersionChecker(NodeReference nodeId) {
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this.nodeId = nodeId;
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}
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/**
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* Get the version of the service name for the node.
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* If we can't find the service for the node, a NotFound exception will return.
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* The null maybe return.
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* @param serviceName
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* @return the version of the service
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* @throws NotImplemented
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* @throws ServiceFailure
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*/
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public String getVersion(String serviceName) throws ServiceFailure, NotImplemented {
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String version = null;
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if(nodeId != null && serviceName != null) {
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Node node = null;
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CNode cnV2 = D1Client.getCN();
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try {
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//try v2 first.
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node = cnV2.getNodeCapabilities(nodeId);
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} catch (Exception e) {
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//try v1 api
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org.dataone.client.v1.CNode cnV1 = org.dataone.client.v1.itk.D1Client.getCN();
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NodeList nodeList = cnV1.listNodes();
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if(nodeList != null) {
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List<Node> list =nodeList.getNodeList();
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if(list != null) {
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for(Node node1 : list) {
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if(node1 != null && node1.getIdentifier() != null && node1.getIdentifier().equals(nodeId)) {
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node = node1;
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break;
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}
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}
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}
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}
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}
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if(node != null) {
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Services services = node.getServices();
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if(services != null) {
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List<Service> list = services.getServiceList();
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if(list != null) {
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for(Service service : list) {
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if(service != null && service.getName() != null && service.getName().equals(serviceName) &&
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service.getVersion() != null && service.getVersion().equalsIgnoreCase(HIGHESTVERSION) && service.getAvailable() == true ) {
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version = HIGHESTVERSION;
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break;
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} else if(service != null && service.getName() != null && service.getName().equals(serviceName) &&
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service.getVersion() != null && service.getVersion().equalsIgnoreCase(SECONDHIGHESTVERSION) && service.getAvailable() == true ) {
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version = SECONDHIGHESTVERSION;
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}
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}
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}
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}
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}
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}
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return version;
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}
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}
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