[3235] | 1 | /*
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| 2 | * MessageRouter.java
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| 3 | * Copyright (C) 2002 New Zealand Digital Library, http://www.nzdl.org
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or modify
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| 6 | * it under the terms of the GNU General Public License as published by
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| 7 | * the Free Software Foundation; either version 2 of the License, or
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| 8 | * (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 18 | */
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[3229] | 19 | package org.greenstone.gsdl3.core;
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| 20 |
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| 21 | import java.io.File;
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[5226] | 22 | import java.net.Authenticator;
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[14210] | 23 | import java.net.PasswordAuthentication;
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[10292] | 24 | import java.util.HashMap;
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| 25 | import java.util.Iterator;
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[3229] | 26 |
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[23793] | 27 | import org.apache.commons.lang3.StringUtils;
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[25747] | 28 | import org.apache.log4j.Logger;
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| 29 | import org.greenstone.gsdl3.collection.Collection;
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| 30 | import org.greenstone.gsdl3.collection.ServiceCluster;
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| 31 | import org.greenstone.gsdl3.comms.Communicator;
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| 32 | import org.greenstone.gsdl3.comms.SOAPCommunicator;
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| 33 | import org.greenstone.gsdl3.service.ServiceRack;
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| 34 | import org.greenstone.gsdl3.util.GSFile;
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| 35 | import org.greenstone.gsdl3.util.GSPath;
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| 36 | import org.greenstone.gsdl3.util.GSXML;
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| 37 | import org.greenstone.gsdl3.util.OAIXML;
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| 38 | import org.greenstone.gsdl3.util.UserContext;
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| 39 | import org.greenstone.gsdl3.util.XMLConverter;
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| 40 | import org.greenstone.util.GlobalProperties;
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| 41 | import org.w3c.dom.Document;
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| 42 | import org.w3c.dom.Element;
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| 43 | import org.w3c.dom.Node;
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| 44 | import org.w3c.dom.NodeList;
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[23793] | 45 |
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[3229] | 46 | /**
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[14210] | 47 | * The hub of a Greenstone system.
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[25746] | 48 | *
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[19352] | 49 | * Accepts XML requests (via process method of ModuleInterface) and routes them
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| 50 | * to the appropriate collection or service or external entity.
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[25746] | 51 | *
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[14210] | 52 | * contains a map of module objects - may be services, collections, comms
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[3229] | 53 | * objects talking to other MessageRouters etc.
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[25746] | 54 | *
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| 55 | *
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[25727] | 56 | * @author Katherine Don
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[3235] | 57 | * @version $Revision: 26195 $
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[3229] | 58 | * @see ModuleInterface
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| 59 | * @see Collection
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[3644] | 60 | * @see ServiceRack
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[3229] | 61 | * @see Communicator
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[25746] | 62 | *
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| 63 | * Since some service classes are moved into a separate directory in order
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| 64 | * for them to be checked out from a different repository, we modify the
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| 65 | * configureServices method to search some of the classes in other place if
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| 66 | * they are not found in the service directory.
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[15027] | 67 | */
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[25746] | 68 | public class MessageRouter implements ModuleInterface
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| 69 | {
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[14534] | 70 |
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[25746] | 71 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.core.MessageRouter.class.getName());
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[3229] | 72 |
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[25746] | 73 | /** the (directory) name of the site */
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| 74 | protected String site_name = null;
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| 75 | /** site home - the home directory for the site */
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| 76 | protected String site_home = null;
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| 77 | /** the http address for this site */
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| 78 | protected String site_http_address = null;
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[14534] | 79 |
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[25746] | 80 | protected String library_name = null;
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[16688] | 81 |
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[25746] | 82 | /** map of names to Module objects */
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| 83 | protected HashMap<String, ModuleInterface> module_map = null;
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[3229] | 84 |
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[25746] | 85 | /** container Document to create XML Nodes */
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| 86 | protected Document doc = null;
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| 87 | /** the full description of this site */
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[15027] | 88 |
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[25746] | 89 | // should these things be separated into local and remote??
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[15027] | 90 |
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[25746] | 91 | /** the original xml config element */
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| 92 | public Element config_info = null;
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[15027] | 93 |
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[25746] | 94 | /** list of collections that can be reached */
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| 95 | protected Element collection_list = null;
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| 96 | /** list of collections that are loaded but are private */
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| 97 | protected Element private_collection_list = null;
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[19352] | 98 |
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[25746] | 99 | /** list of collections that are public and OAI-supportive */
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| 100 | protected Element oai_collection_list = null;
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[19352] | 101 |
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[25746] | 102 | /** list of service clusters that can be reached */
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| 103 | protected Element cluster_list = null;
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| 104 | /** list of single services that can be reached */
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| 105 | protected Element service_list = null;
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| 106 | /** list of sites that can be reached */
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| 107 | protected Element site_list = null;
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| 108 | /** list of metadata for the site */
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| 109 | protected Element metadata_list = null;
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[19352] | 110 |
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[25746] | 111 | /** a converter class to parse XML and create Docs */
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| 112 | protected XMLConverter converter = null;
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[15027] | 113 |
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[25746] | 114 | //***************************************************************
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| 115 | // public methods
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| 116 | //***************************************************************
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[19984] | 117 |
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[25746] | 118 | /** constructor */
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| 119 | public MessageRouter()
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| 120 | {
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| 121 | this.converter = new XMLConverter();
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| 122 | this.doc = this.converter.newDOM();
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| 123 | }
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[19984] | 124 |
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[25746] | 125 | public void cleanUp()
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| 126 | {
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| 127 | cleanUpModuleMapEntire();
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| 128 | }
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[15027] | 129 |
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[25746] | 130 | /** site_name must be set before configure is called */
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| 131 | public void setSiteName(String site_name)
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| 132 | {
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| 133 | this.site_name = site_name;
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| 134 | }
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[15027] | 135 |
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[25746] | 136 | public String getSiteName()
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| 137 | {
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| 138 | return this.site_name;
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| 139 | }
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[19352] | 140 |
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[25746] | 141 | /** library_name must be set before configure is called */
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| 142 | public void setLibraryName(String library_name)
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| 143 | {
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| 144 | this.library_name = library_name;
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| 145 | }
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[23938] | 146 |
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[25746] | 147 | public String getLibraryName()
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| 148 | {
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| 149 | return this.library_name;
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| 150 | }
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[15027] | 151 |
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[25746] | 152 | /**
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| 153 | * configures the system
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| 154 | *
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| 155 | * looks in site_home/collect for collections, reads config file
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| 156 | * site_home/siteConfig.xml
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| 157 | *
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| 158 | */
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| 159 | public boolean configure()
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| 160 | {
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[15027] | 161 |
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[25746] | 162 | logger.info("configuring the Message Router");
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[19984] | 163 |
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[25746] | 164 | if (this.site_name == null)
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| 165 | {
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| 166 | logger.error(" You must set site_name before calling configure");
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| 167 | return false;
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| 168 | }
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| 169 | this.site_home = GSFile.siteHome(GlobalProperties.getGSDL3Home(), this.site_name);
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[26195] | 170 | String web_address = GlobalProperties.getGSDL3WebAddress();
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| 171 | if (web_address.equals("")) {
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| 172 | this.site_http_address = "sites/"+this.site_name;
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| 173 | } else {
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| 174 | this.site_http_address = web_address + "/sites/" + this.site_name;
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| 175 | }
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[25746] | 176 | // are we behind a firewall?? - is there a better place to set up the proxy?
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| 177 | String host = GlobalProperties.getProperty("proxy.host");
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| 178 | String port = GlobalProperties.getProperty("proxy.port");
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| 179 | final String user = GlobalProperties.getProperty("proxy.user");
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| 180 | final String passwd = GlobalProperties.getProperty("proxy.password");
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[19984] | 181 |
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[25746] | 182 | if (host != null && !host.equals("") && port != null && !port.equals(""))
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| 183 | {
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| 184 | System.setProperty("http.proxyType", "4");
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| 185 | System.setProperty("http.proxyHost", host);
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| 186 | System.setProperty("http.proxyPort", port);
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| 187 | System.setProperty("http.proxySet", "true");
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| 188 | // have we got a user/password?
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| 189 | if (user != null && !user.equals("") && passwd != null && !passwd.equals(""))
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| 190 | {
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| 191 | try
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| 192 | {
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| 193 | // set up the authenticator
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| 194 | Authenticator.setDefault(new Authenticator()
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| 195 | {
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| 196 | protected PasswordAuthentication getPasswordAuthentication()
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| 197 | {
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| 198 | return new PasswordAuthentication(user, new String(passwd).toCharArray());
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| 199 | }
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| 200 | });
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[16688] | 201 |
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[25746] | 202 | }
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| 203 | catch (Exception e)
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| 204 | {
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| 205 | logger.error("MessageRouter Error: couldn't set up an authenticator the proxy");
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[19984] | 206 |
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[25746] | 207 | }
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| 208 | }
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| 209 | }
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[15027] | 210 |
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[25746] | 211 | this.module_map = new HashMap<String, ModuleInterface>();
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[15027] | 212 |
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[25746] | 213 | // This stuff may be done at a reconfigure also
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| 214 | return configureLocalSite();
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| 215 |
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| 216 | }
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| 217 |
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| 218 | /**
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| 219 | * Process an XML request - as a String
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| 220 | *
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| 221 | * @param xml_in
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| 222 | * the request to process
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| 223 | * @return the response - contains any error messages
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| 224 | * @see String
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| 225 | */
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| 226 | public String process(String xml_in)
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| 227 | {
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| 228 |
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| 229 | Document doc = this.converter.getDOM(xml_in);
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| 230 |
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| 231 | Node result = process(doc);
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| 232 | return this.converter.getString(result);
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| 233 | }
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| 234 |
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| 235 | /**
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| 236 | * Process an XML request - as a DOM Element
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| 237 | *
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| 238 | * @param xml_in
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| 239 | * the message to process - should be <message>
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| 240 | * @return the response - contains any error messages
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| 241 | * @see Element
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| 242 | */
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| 243 | public Node process(Node message_node)
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| 244 | {
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| 245 |
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| 246 | Element message = this.converter.nodeToElement(message_node);
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| 247 |
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| 248 | // check that its a correct message tag
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| 249 | if (!message.getTagName().equals(GSXML.MESSAGE_ELEM))
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| 250 | {
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| 251 | logger.error(" Invalid message. GSDL message should start with <" + GSXML.MESSAGE_ELEM + ">, instead it starts with:" + message.getTagName() + ".");
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| 252 | return null;
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| 253 | }
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| 254 |
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| 255 | NodeList requests = message.getElementsByTagName(GSXML.REQUEST_ELEM);
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| 256 |
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| 257 | Element mainResult = this.doc.createElement(GSXML.MESSAGE_ELEM);
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| 258 |
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| 259 | // empty request
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| 260 | if (requests.getLength() == 0)
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| 261 | {
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| 262 | logger.error("empty request");
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| 263 | return mainResult;
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| 264 | }
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| 265 |
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| 266 | Document message_doc = message.getOwnerDocument();
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| 267 |
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| 268 | // for now, just process each request one by one, and append the results to mainResult
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| 269 | // Note: if you add an element to another node in the same document, it
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| 270 | // gets removed from where it was. This changes the node list - you cant iterate over the node list in a normal manner if you are moving elements out of it
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| 271 | int num_requests = requests.getLength();
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| 272 | for (int i = 0; i < num_requests; i++)
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| 273 | {
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| 274 | Node result = null;
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| 275 | Element req = (Element) requests.item(i);
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| 276 | if (req == null)
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| 277 | {
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| 278 | logger.error("request " + i + " is null");
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| 279 | continue;
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| 280 | }
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| 281 | String path = req.getAttribute(GSXML.TO_ATT); // returns "" if no att of this name
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| 282 | if (path.equals(""))
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| 283 | {
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| 284 | // its a message for the message router
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| 285 | String type_att = req.getAttribute(GSXML.TYPE_ATT);
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| 286 | if (type_att.equals(GSXML.REQUEST_TYPE_MESSAGING))
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| 287 | {
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| 288 | // its a messaging request - modifies the requests/responses
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| 289 | result = modifyMessages(req, message, mainResult);
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[25580] | 290 | }
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[25746] | 291 | else
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| 292 | {
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| 293 | // standard request
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| 294 | result = processMessage(req);
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| 295 | }
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| 296 |
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| 297 | if (result != null)
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| 298 | {
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| 299 | mainResult.appendChild(this.doc.importNode(result, true));
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| 300 | }
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[25580] | 301 | }
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[25746] | 302 | else
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| 303 | {
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| 304 | // The message needs to go to another module. The same message can
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| 305 | // be passed to multiple modules - they will be in a comma
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| 306 | // separated list in the 'to' attribute
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| 307 | String[] modules = StringUtils.split(path, ",");
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[25748] | 308 |
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[25747] | 309 | for (String this_mod : modules)
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[25746] | 310 | {
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| 311 | // why can't we do this outside the loop??
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| 312 | Element mess = this.doc.createElement(GSXML.MESSAGE_ELEM);
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| 313 | Element copied_request = (Element) this.doc.importNode(req, true);
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| 314 | mess.appendChild(copied_request);
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| 315 |
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| 316 | // find the module to pass it on to
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| 317 | // need to put the request into a message element
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| 318 | String obj = GSPath.getFirstLink(this_mod);
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| 319 |
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| 320 | if (this.module_map.containsKey(obj))
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| 321 | {
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| 322 | copied_request.setAttribute(GSXML.TO_ATT, this_mod);
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| 323 | result = this.module_map.get(obj).process(mess);
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[25748] | 324 |
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[25746] | 325 | if (result != null)
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| 326 | {
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| 327 | // append the contents of the message to the mainResult - there will only be one response at this stage
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| 328 | Node res = GSXML.getChildByTagName(result, GSXML.RESPONSE_ELEM);
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| 329 | if (res != null)
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| 330 | {
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| 331 | mainResult.appendChild(this.doc.importNode(res, true));
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| 332 | }
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| 333 | }
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| 334 | else
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| 335 | {
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| 336 | // add in a place holder response
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| 337 | Element response = this.doc.createElement(GSXML.RESPONSE_ELEM);
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| 338 | response.setAttribute(GSXML.FROM_ATT, this_mod);
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| 339 | mainResult.appendChild(response);
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| 340 | logger.error("MessageRouter Error: request had null result!");
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| 341 | }
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| 342 | }
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| 343 | else
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| 344 | {
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| 345 | logger.error("MessageRouter Error: request has illegal module name in:\n" + this.converter.getString(req));
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| 346 | }
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| 347 | }
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| 348 | }
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| 349 |
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| 350 | } // for each request
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| 351 |
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| 352 | logger.debug("MR returned response");
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| 353 | logger.debug(this.converter.getString(mainResult));
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| 354 |
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| 355 | return mainResult;
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| 356 | }
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| 357 |
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| 358 | public Element getCollectionList()
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| 359 | {
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| 360 | return collection_list;
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| 361 | }
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| 362 |
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| 363 | public Element getPrivateCollectionList()
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| 364 | {
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| 365 | return private_collection_list;
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| 366 | }
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| 367 |
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| 368 | public HashMap<String, ModuleInterface> getModuleMap()
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| 369 | {
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| 370 | return module_map;
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| 371 | }
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| 372 |
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| 373 | // ********************************************************************
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| 374 | // auxiliary configure and cleanup methods
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| 375 | // *******************************************************************
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| 376 |
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| 377 | /**
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| 378 | * Calls clean up on all modules referenced in the module_map and removes
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| 379 | * them .
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| 380 | */
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| 381 | protected void cleanUpModuleMapEntire()
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| 382 | {
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| 383 | if (this.module_map != null)
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| 384 | {
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| 385 | Iterator<ModuleInterface> i = this.module_map.values().iterator();
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| 386 | while (i.hasNext())
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| 387 | {
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| 388 | i.next().cleanUp();
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| 389 | i.remove();
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| 390 | }
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[25571] | 391 | }
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[25746] | 392 | }
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[15027] | 393 |
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[25746] | 394 | /**
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| 395 | * Goes through the children of list, and for each local/site-specific name
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| 396 | * attribute, calls cleanUp on the module and removes it from the module_map
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| 397 | * and removes it from the list
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| 398 | */
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| 399 | protected void cleanUpModuleMapSubset(Element list, String remote_site)
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| 400 | {
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| 401 | logger.error(this.converter.getString(list));
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| 402 | NodeList elements = list.getChildNodes(); // we are assuming no extraneous nodes
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| 403 | for (int i = elements.getLength() - 1; i >= 0; i--)
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| 404 | {
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| 405 | Element item = (Element) elements.item(i);
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| 406 | String name = item.getAttribute(GSXML.NAME_ATT);
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| 407 | String potential_site_name = GSPath.getFirstLink(name);
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| 408 | if (remote_site != null)
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| 409 | {
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| 410 | if (remote_site.equals(potential_site_name))
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| 411 | {
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| 412 | list.removeChild(item);
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| 413 | }
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| 414 | }
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| 415 | else
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| 416 | {
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| 417 | if (name.equals(potential_site_name))
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| 418 | {// there was no site
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| 419 | list.removeChild(item);
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| 420 | ModuleInterface m = this.module_map.remove(name);
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| 421 | m.cleanUp(); // clean up any open files/connections etc
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| 422 | m = null;
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| 423 | }
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| 424 | }
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| 425 | }
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| 426 | logger.error(this.converter.getString(list));
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| 427 | }
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[15027] | 428 |
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[25746] | 429 | /**
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| 430 | * removes all site modules from module_map, and any stored info about this
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| 431 | * sites collections and services
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| 432 | */
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| 433 | protected void cleanUpAllExternalSiteInfo()
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| 434 | {
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[3485] | 435 |
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[25746] | 436 | NodeList site_nodes = this.site_list.getChildNodes();
|
---|
| 437 | for (int i = site_nodes.getLength() - 1; i >= 0; i--)
|
---|
| 438 | {
|
---|
| 439 | Element item = (Element) site_nodes.item(i);
|
---|
| 440 | String name = item.getAttribute(GSXML.NAME_ATT);
|
---|
| 441 | // will remove the node from site_list
|
---|
| 442 | deactivateModule(GSXML.SITE_ELEM, name);
|
---|
| 443 | }
|
---|
[3485] | 444 |
|
---|
[25746] | 445 | }
|
---|
| 446 |
|
---|
| 447 | /**
|
---|
| 448 | * read thru own site config file - create services and connect to sites
|
---|
| 449 | */
|
---|
| 450 | protected boolean configureLocalSite()
|
---|
| 451 | {
|
---|
| 452 |
|
---|
| 453 | // this may be a reconfigure, so clean up the old moduleMap
|
---|
| 454 | cleanUpModuleMapEntire();
|
---|
| 455 |
|
---|
| 456 | File configFile = new File(GSFile.siteConfigFile(this.site_home));
|
---|
| 457 |
|
---|
| 458 | if (!configFile.exists())
|
---|
| 459 | {
|
---|
| 460 | logger.error(" site config file: " + configFile.getPath() + " not found!");
|
---|
| 461 | return false;
|
---|
| 462 | }
|
---|
| 463 |
|
---|
| 464 | Document config_doc = this.converter.getDOM(configFile);
|
---|
| 465 | if (config_doc == null)
|
---|
| 466 | {
|
---|
| 467 | logger.error(" couldn't parse site config file: " + configFile.getPath());
|
---|
| 468 | return false;
|
---|
| 469 | }
|
---|
| 470 |
|
---|
| 471 | this.config_info = config_doc.getDocumentElement();
|
---|
| 472 |
|
---|
| 473 | // load up the services: serviceRackList
|
---|
| 474 | this.service_list = this.doc.createElement(GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 475 | Element service_rack_list_elem = (Element) GSXML.getChildByTagName(config_info, GSXML.SERVICE_CLASS_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 476 | configureServices(service_rack_list_elem);
|
---|
| 477 |
|
---|
| 478 | // load up the service clusters
|
---|
| 479 | this.cluster_list = this.doc.createElement(GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 480 | Element cluster_list_elem = (Element) GSXML.getChildByTagName(config_info, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 481 | configureClusters(cluster_list_elem);
|
---|
| 482 |
|
---|
| 483 | // load up the collections
|
---|
| 484 | this.collection_list = this.doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 485 | this.private_collection_list = this.doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 486 | this.oai_collection_list = this.doc.createElement(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 487 | configureCollections();
|
---|
| 488 |
|
---|
| 489 | // load up the external sites - this also adds their services/clusters/collections to the other lists - so must be done last
|
---|
| 490 | this.site_list = this.doc.createElement(GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 491 | Element site_list_elem = (Element) GSXML.getChildByTagName(config_info, GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 492 | configureExternalSites(site_list_elem);
|
---|
| 493 |
|
---|
| 494 | // load up the site metadata
|
---|
| 495 | this.metadata_list = this.doc.createElement(GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 496 | Element metadata_list_elem = (Element) GSXML.getChildByTagName(config_info, GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 497 | loadMetadata(metadata_list_elem);
|
---|
| 498 |
|
---|
| 499 | return true;
|
---|
| 500 |
|
---|
| 501 | }
|
---|
| 502 |
|
---|
| 503 | protected boolean configureServices(Element service_rack_list)
|
---|
| 504 | {
|
---|
| 505 |
|
---|
| 506 | // load up the individual services
|
---|
| 507 | logger.info("loading service modules...");
|
---|
| 508 |
|
---|
| 509 | if (service_rack_list == null)
|
---|
| 510 | {
|
---|
| 511 | logger.info("... none to be loaded");
|
---|
| 512 | return true;
|
---|
| 513 | }
|
---|
| 514 |
|
---|
| 515 | NodeList service_racks = service_rack_list.getElementsByTagName(GSXML.SERVICE_CLASS_ELEM);
|
---|
| 516 | if (service_racks.getLength() == 0)
|
---|
| 517 | {
|
---|
| 518 | logger.info("... none to be loaded");
|
---|
| 519 | return true;
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | Element service_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
|
---|
| 523 | Element service_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_DESCRIBE, "", new UserContext());
|
---|
| 524 | service_message.appendChild(service_request);
|
---|
| 525 |
|
---|
| 526 | for (int i = 0; i < service_racks.getLength(); i++)
|
---|
| 527 | {
|
---|
| 528 | Element n = (Element) service_racks.item(i);
|
---|
| 529 | String service_name = n.getAttribute(GSXML.NAME_ATT);
|
---|
| 530 | logger.info("..." + service_name);
|
---|
| 531 |
|
---|
| 532 | Class service_class = null;
|
---|
| 533 | try
|
---|
| 534 | {
|
---|
| 535 | service_class = Class.forName("org.greenstone.gsdl3.service." + service_name);
|
---|
| 536 | }
|
---|
| 537 | catch (ClassNotFoundException e)
|
---|
| 538 | {
|
---|
| 539 | try
|
---|
| 540 | {
|
---|
| 541 | //try the service_name alone in case the package name is already specified
|
---|
| 542 | service_class = Class.forName(service_name);
|
---|
| 543 | }
|
---|
| 544 | catch (ClassNotFoundException ae)
|
---|
| 545 | {
|
---|
| 546 | logger.info(ae.getMessage());
|
---|
| 547 | }
|
---|
| 548 | }
|
---|
| 549 | try
|
---|
| 550 | {
|
---|
| 551 | ServiceRack s = (ServiceRack) service_class.newInstance();
|
---|
| 552 | s.setSiteHome(this.site_home);
|
---|
| 553 | s.setSiteAddress(this.site_http_address);
|
---|
| 554 | s.setLibraryName(this.library_name);
|
---|
| 555 | s.setMessageRouter(this);
|
---|
| 556 | // pass the XML node to the service for service configuration
|
---|
| 557 | if (!s.configure(n, null))
|
---|
| 558 | {
|
---|
| 559 | logger.error("couldn't configure ServiceRack " + service_name);
|
---|
| 560 | continue;
|
---|
| 561 | }
|
---|
| 562 |
|
---|
| 563 | // find out the supported services for this service module
|
---|
| 564 | Element service_response = (Element) s.process(service_message);
|
---|
| 565 | NodeList services = service_response.getElementsByTagName(GSXML.SERVICE_ELEM);
|
---|
| 566 | if (services.getLength() == 0)
|
---|
| 567 | {
|
---|
| 568 | logger.error("MessageRouter configure error: serviceRack " + service_name + " has no services!");
|
---|
| 569 | }
|
---|
| 570 | else
|
---|
| 571 | {
|
---|
| 572 | for (int j = 0; j < services.getLength(); j++)
|
---|
| 573 | {
|
---|
| 574 | String service = ((Element) services.item(j)).getAttribute(GSXML.NAME_ATT);
|
---|
| 575 |
|
---|
| 576 | this.module_map.put(service, s);
|
---|
| 577 |
|
---|
| 578 | // add short info to service_list_ XML
|
---|
| 579 | this.service_list.appendChild(this.doc.importNode(services.item(j), true));
|
---|
| 580 | }
|
---|
| 581 | }
|
---|
| 582 | }
|
---|
| 583 | catch (Exception e)
|
---|
| 584 | {
|
---|
| 585 | logger.error("MessageRouter configure exception: in ServiceRack class specification: " + e.getMessage());
|
---|
| 586 | e.printStackTrace();
|
---|
| 587 | }
|
---|
| 588 | } // for each service module
|
---|
| 589 | return true;
|
---|
| 590 | }
|
---|
| 591 |
|
---|
| 592 | protected boolean configureClusters(Element config_cluster_list)
|
---|
| 593 | {
|
---|
| 594 |
|
---|
| 595 | // load up the service clusters
|
---|
| 596 | logger.info("loading service clusters ...");
|
---|
| 597 | if (config_cluster_list == null)
|
---|
| 598 | {
|
---|
| 599 | logger.info("... none to be loaded");
|
---|
| 600 | return true;
|
---|
| 601 | }
|
---|
| 602 | NodeList service_clusters = config_cluster_list.getElementsByTagName(GSXML.CLUSTER_ELEM);
|
---|
| 603 | if (service_clusters.getLength() == 0)
|
---|
| 604 | {
|
---|
| 605 | logger.info("... none to be loaded");
|
---|
| 606 | return true;
|
---|
| 607 | }
|
---|
| 608 |
|
---|
| 609 | for (int i = 0; i < service_clusters.getLength(); i++)
|
---|
| 610 | {
|
---|
| 611 | Element cluster = (Element) service_clusters.item(i);
|
---|
| 612 | String name = cluster.getAttribute(GSXML.NAME_ATT);
|
---|
| 613 | logger.info("..." + name);
|
---|
| 614 | ServiceCluster sc = new ServiceCluster();
|
---|
| 615 | sc.setSiteHome(this.site_home);
|
---|
| 616 | sc.setSiteAddress(this.site_http_address);
|
---|
| 617 | sc.setClusterName(name);
|
---|
| 618 | sc.setMessageRouter(this);
|
---|
| 619 | if (!sc.configure(cluster))
|
---|
| 620 | {
|
---|
| 621 | logger.error("couldn't configure ServiceCluster " + name);
|
---|
| 622 | continue;
|
---|
| 623 | }
|
---|
| 624 |
|
---|
| 625 | this.module_map.put(name, sc); // this replaces the old one if there was one already present
|
---|
| 626 | //add short info to cluster list
|
---|
| 627 | Element e = this.doc.createElement(GSXML.CLUSTER_ELEM);
|
---|
| 628 | e.setAttribute(GSXML.NAME_ATT, name);
|
---|
| 629 | this.cluster_list.appendChild(e);
|
---|
| 630 |
|
---|
| 631 | }
|
---|
| 632 | return true;
|
---|
| 633 | }
|
---|
| 634 |
|
---|
| 635 | /**
|
---|
| 636 | * looks through the collect directory and activates any collections it
|
---|
| 637 | * finds. If this is a reconfigure, clean up must be done first before
|
---|
| 638 | * calling this
|
---|
| 639 | */
|
---|
| 640 | protected boolean configureCollections()
|
---|
| 641 | {
|
---|
| 642 |
|
---|
| 643 | // read thru the collect directory and activate all the valid collections
|
---|
| 644 | File collectDir = new File(GSFile.collectDir(this.site_home));
|
---|
| 645 | if (collectDir.exists())
|
---|
| 646 | {
|
---|
| 647 | logger.info("Reading thru directory " + collectDir.getPath() + " to find collections.");
|
---|
| 648 | File[] contents = collectDir.listFiles();
|
---|
| 649 | for (int i = 0; i < contents.length; i++)
|
---|
| 650 | {
|
---|
| 651 | if (contents[i].isDirectory())
|
---|
| 652 | {
|
---|
| 653 |
|
---|
| 654 | String colName = contents[i].getName();
|
---|
| 655 | if (!colName.startsWith("CVS") && !colName.startsWith(".svn"))
|
---|
| 656 | {
|
---|
| 657 | activateCollectionByName(colName);
|
---|
| 658 | }
|
---|
| 659 | }
|
---|
| 660 | }
|
---|
| 661 | } // collectDir
|
---|
| 662 | return true;
|
---|
| 663 | }
|
---|
| 664 |
|
---|
| 665 | // testing whether a collection (or more generally, a module) is active
|
---|
| 666 | protected boolean pingModule(String name)
|
---|
| 667 | {
|
---|
| 668 | // module (including collection) would have been added to module_map
|
---|
| 669 | // if activated, and removed from map if deactivated.
|
---|
| 670 | // The this.collection_list Element would contain the collection too,
|
---|
| 671 | // but the following check seems to be more generally useful
|
---|
| 672 | return this.module_map.containsKey(name);
|
---|
| 673 | }
|
---|
| 674 |
|
---|
| 675 | /**
|
---|
| 676 | * creates and configures a new collection if this is done for a
|
---|
| 677 | * reconfigure, the collection should be deactivated first.
|
---|
| 678 | *
|
---|
| 679 | * @param col_name
|
---|
| 680 | * the name of the collection
|
---|
| 681 | * @return true if collection created ok
|
---|
| 682 | */
|
---|
| 683 | protected boolean activateCollectionByName(String col_name)
|
---|
| 684 | {
|
---|
| 685 |
|
---|
| 686 | logger.info("Activating collection: " + col_name + ".");
|
---|
| 687 |
|
---|
| 688 | // Look for the etc/collectionInit.xml file, and see what sort of Collection to load
|
---|
| 689 | Collection c = null;
|
---|
| 690 | File init_file = new File(GSFile.collectionInitFile(this.site_home, col_name));
|
---|
| 691 |
|
---|
| 692 | if (init_file.exists())
|
---|
| 693 | {
|
---|
| 694 | Document init_doc = this.converter.getDOM(init_file);
|
---|
| 695 | if (init_doc != null)
|
---|
| 696 | {
|
---|
| 697 | Element init_elem = init_doc.getDocumentElement();
|
---|
| 698 | if (init_elem != null)
|
---|
| 699 | {
|
---|
| 700 | String coll_class_name = init_elem.getAttribute("class");
|
---|
| 701 | if (!coll_class_name.equals(""))
|
---|
| 702 | {
|
---|
| 703 | try
|
---|
| 704 | {
|
---|
| 705 | c = (Collection) Class.forName("org.greenstone.gsdl3.collection." + coll_class_name).newInstance();
|
---|
| 706 | }
|
---|
| 707 | catch (Exception e)
|
---|
| 708 | {
|
---|
| 709 | logger.info(" couldn't create a new collection, type " + coll_class_name + ", defaulting to class Collection");
|
---|
| 710 | }
|
---|
| 711 | }
|
---|
| 712 | }
|
---|
| 713 | }
|
---|
| 714 | }
|
---|
| 715 | if (c == null)
|
---|
| 716 | { // we haven't found another classname to use
|
---|
| 717 | c = new Collection();
|
---|
| 718 | }
|
---|
| 719 |
|
---|
| 720 | c.setCollectionName(col_name);
|
---|
| 721 | c.setSiteHome(this.site_home);
|
---|
| 722 | c.setSiteAddress(this.site_http_address);
|
---|
| 723 | c.setMessageRouter(this);
|
---|
| 724 | if (c.configure())
|
---|
| 725 | {
|
---|
| 726 | logger.info("have just configured collection " + col_name);
|
---|
| 727 | // add to list of collections
|
---|
| 728 | this.module_map.put(col_name, c);
|
---|
| 729 | Element e = this.doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
| 730 | e.setAttribute(GSXML.NAME_ATT, col_name);
|
---|
| 731 |
|
---|
| 732 | if (c.isPublic())
|
---|
| 733 | {
|
---|
| 734 | // only public collections will appear on the home page
|
---|
| 735 | // add short description_ to collection_list_
|
---|
| 736 | this.collection_list.appendChild(e);
|
---|
| 737 |
|
---|
| 738 | if (c.hasOAI())
|
---|
| 739 | {
|
---|
| 740 | Element ane = this.doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
| 741 | //The collection name is returned as site_name:coll_name, which is in fact the set specification
|
---|
| 742 | ane.setAttribute(GSXML.NAME_ATT, site_name + ":" + col_name);
|
---|
| 743 | ane.setAttribute(OAIXML.LASTMODIFIED, "" + c.getLastmodified());
|
---|
| 744 | // lastmodified not of use anymore for OAI, perhaps useful as general information
|
---|
| 745 | ane.setAttribute(OAIXML.EARLIEST_DATESTAMP, "" + c.getEarliestDatestamp()); // for OAI
|
---|
| 746 |
|
---|
| 747 | this.oai_collection_list.appendChild(ane);
|
---|
| 748 | //logger.info(GSXML.xmlNodeToString(oai_collection_list));
|
---|
| 749 | }
|
---|
| 750 |
|
---|
| 751 | }
|
---|
| 752 | else
|
---|
| 753 | {
|
---|
| 754 | this.private_collection_list.appendChild(e);
|
---|
| 755 | }
|
---|
| 756 | return true;
|
---|
| 757 | }
|
---|
| 758 | else
|
---|
| 759 | {
|
---|
| 760 | logger.error("Couldn't configure collection: " + col_name + ".");
|
---|
| 761 | return false;
|
---|
| 762 | }
|
---|
| 763 | }
|
---|
| 764 |
|
---|
| 765 | /**
|
---|
| 766 | * Goes through the siteList and activates each site found. If this is done
|
---|
| 767 | * for a reconfigure, a clean up must be done first ****HOW???
|
---|
| 768 | */
|
---|
| 769 | protected boolean configureExternalSites(Element config_site_list)
|
---|
| 770 | {
|
---|
| 771 |
|
---|
| 772 | // load up the sites
|
---|
| 773 | logger.info("loading external sites...");
|
---|
| 774 | if (config_site_list == null)
|
---|
| 775 | {
|
---|
| 776 | logger.info("...none found");
|
---|
| 777 | return true;
|
---|
| 778 | }
|
---|
| 779 |
|
---|
| 780 | NodeList sites = config_site_list.getElementsByTagName(GSXML.SITE_ELEM);
|
---|
| 781 | if (sites.getLength() == 0)
|
---|
| 782 | {
|
---|
| 783 | logger.info("...none found");
|
---|
| 784 | return true;
|
---|
| 785 | }
|
---|
| 786 |
|
---|
| 787 | // this is a name to identify the current site in the Communicator
|
---|
| 788 | String local_site_name = config_site_list.getAttribute(GSXML.LOCAL_SITE_NAME_ATT);
|
---|
| 789 | if (local_site_name.equals(""))
|
---|
| 790 | {
|
---|
| 791 | local_site_name = site_name;
|
---|
| 792 | }
|
---|
| 793 |
|
---|
| 794 | for (int i = 0; i < sites.getLength(); i++)
|
---|
| 795 | {
|
---|
| 796 | Element s = (Element) sites.item(i);
|
---|
| 797 | activateSite(s, local_site_name);
|
---|
| 798 | }
|
---|
| 799 | return true;
|
---|
| 800 | }
|
---|
| 801 |
|
---|
| 802 | protected boolean activateSiteByName(String site_name)
|
---|
| 803 | {
|
---|
| 804 | logger.info("Activating site: " + site_name + ".");
|
---|
| 805 |
|
---|
| 806 | File configFile = new File(GSFile.siteConfigFile(this.site_home));
|
---|
| 807 |
|
---|
| 808 | if (!configFile.exists())
|
---|
| 809 | {
|
---|
| 810 | logger.error(" site config file: " + configFile.getPath() + " not found!");
|
---|
| 811 | return false;
|
---|
| 812 | }
|
---|
| 813 | Document config_doc = this.converter.getDOM(configFile);
|
---|
| 814 | if (config_doc == null)
|
---|
| 815 | {
|
---|
| 816 | logger.error(" couldn't parse site config file: " + configFile.getPath());
|
---|
| 817 | return false;
|
---|
| 818 | }
|
---|
| 819 | Element config_elem = config_doc.getDocumentElement();
|
---|
| 820 |
|
---|
| 821 | Element config_site_list = (Element) GSXML.getChildByTagName(config_elem, GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 822 | if (config_site_list == null)
|
---|
| 823 | {
|
---|
| 824 | logger.error("activateSite, no sites found");
|
---|
| 825 | return false;
|
---|
| 826 | }
|
---|
| 827 | // this is a name to identify the current site in the Communicator
|
---|
| 828 | String local_site_name = config_site_list.getAttribute("localSiteName");
|
---|
| 829 | if (local_site_name.equals(""))
|
---|
| 830 | {
|
---|
| 831 | local_site_name = site_name;
|
---|
| 832 | }
|
---|
| 833 |
|
---|
| 834 | Element this_site_elem = GSXML.getNamedElement(config_site_list, GSXML.SITE_ELEM, GSXML.NAME_ATT, site_name);
|
---|
| 835 | if (this_site_elem == null)
|
---|
| 836 | {
|
---|
| 837 | logger.error("activateSite, site " + site_name + " not found");
|
---|
| 838 | return false;
|
---|
| 839 | }
|
---|
| 840 |
|
---|
| 841 | return activateSite(this_site_elem, local_site_name);
|
---|
| 842 | }
|
---|
| 843 |
|
---|
| 844 | protected boolean activateSite(Element site_elem, String local_site_name)
|
---|
| 845 | {
|
---|
| 846 |
|
---|
| 847 | Communicator comm = null;
|
---|
| 848 | String type = site_elem.getAttribute(GSXML.TYPE_ATT);
|
---|
| 849 | String name = site_elem.getAttribute(GSXML.NAME_ATT);
|
---|
| 850 | if (type.equals(GSXML.COMM_TYPE_SOAP_JAVA))
|
---|
| 851 | {
|
---|
| 852 | logger.info("activating SOAP site " + name);
|
---|
| 853 | comm = new SOAPCommunicator();
|
---|
| 854 | if (comm.configure(site_elem))
|
---|
| 855 | {
|
---|
| 856 | comm.setLocalSiteName(local_site_name);
|
---|
| 857 |
|
---|
| 858 | // add to map of modules
|
---|
| 859 | this.module_map.put(name, comm);
|
---|
| 860 | this.site_list.appendChild(this.doc.importNode(site_elem, true));
|
---|
| 861 | // need to get collection list and service
|
---|
| 862 | // list from here- if the site isn't up yet, the site will
|
---|
| 863 | // have to be added later
|
---|
| 864 | if (!getRemoteSiteInfo(comm, name))
|
---|
| 865 | {
|
---|
| 866 | logger.error(" couldn't get info from site");
|
---|
| 867 | }
|
---|
| 868 | }
|
---|
| 869 | else
|
---|
| 870 | {
|
---|
| 871 | logger.error(" couldn't configure site");
|
---|
| 872 | return false;
|
---|
| 873 | }
|
---|
| 874 |
|
---|
| 875 | }
|
---|
| 876 | else
|
---|
| 877 | {
|
---|
| 878 | logger.error(" cant talk to server of type:" + type + ", so not making a connection to " + name);
|
---|
| 879 | return false;
|
---|
| 880 | }
|
---|
| 881 | return true;
|
---|
| 882 | }
|
---|
| 883 |
|
---|
| 884 | /** Goes through the metadataList and loads each metadatum found */
|
---|
| 885 | protected boolean loadMetadata(Element config_metadata_list)
|
---|
| 886 | {
|
---|
| 887 |
|
---|
| 888 | // load up the sites
|
---|
| 889 | logger.info("loading site metadata...");
|
---|
| 890 | if (config_metadata_list == null)
|
---|
| 891 | {
|
---|
| 892 | logger.info("...none found");
|
---|
| 893 | return true;
|
---|
| 894 | }
|
---|
| 895 |
|
---|
| 896 | NodeList metadata = config_metadata_list.getElementsByTagName(GSXML.METADATA_ELEM);
|
---|
| 897 | if (metadata.getLength() == 0)
|
---|
| 898 | {
|
---|
| 899 | logger.info("...none found");
|
---|
| 900 | return true;
|
---|
| 901 | }
|
---|
| 902 |
|
---|
| 903 | for (int i = 0; i < metadata.getLength(); i++)
|
---|
| 904 | {
|
---|
| 905 | Element s = (Element) metadata.item(i);
|
---|
| 906 | this.metadata_list.appendChild(this.doc.importNode(s, true));
|
---|
| 907 | }
|
---|
| 908 | return true;
|
---|
| 909 | }
|
---|
| 910 |
|
---|
| 911 | /**
|
---|
| 912 | * get site info from external site
|
---|
| 913 | *
|
---|
| 914 | * @param comm
|
---|
| 915 | * - the communicator object for the external site
|
---|
| 916 | * @param site_name
|
---|
| 917 | * - the name of the external site
|
---|
| 918 | * @return true if successful
|
---|
| 919 | */
|
---|
| 920 | protected boolean getRemoteSiteInfo(Communicator comm, String site_name)
|
---|
| 921 | {
|
---|
| 922 |
|
---|
| 923 | logger.info(" getting info from site:" + site_name);
|
---|
| 924 |
|
---|
| 925 | Element info_request = this.doc.createElement(GSXML.MESSAGE_ELEM);
|
---|
| 926 | Element req = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_DESCRIBE, "", new UserContext());
|
---|
| 927 | info_request.appendChild(req);
|
---|
| 928 |
|
---|
| 929 | // process the message
|
---|
| 930 | Node info_response_node = comm.process(info_request);
|
---|
| 931 | Element info_response = converter.nodeToElement(info_response_node);
|
---|
| 932 |
|
---|
| 933 | if (info_response == null)
|
---|
| 934 | {
|
---|
| 935 | return false;
|
---|
| 936 | }
|
---|
| 937 | // collection info
|
---|
| 938 | NodeList colls = info_response.getElementsByTagName(GSXML.COLLECTION_ELEM);
|
---|
| 939 | if (colls.getLength() > 0)
|
---|
| 940 | {
|
---|
| 941 | for (int i = 0; i < colls.getLength(); i++)
|
---|
| 942 | {
|
---|
| 943 | Element e = (Element) colls.item(i);
|
---|
| 944 | String col_name = e.getAttribute(GSXML.NAME_ATT);
|
---|
| 945 | // add the info to own coll list - may want to keep
|
---|
| 946 | // this separate in future - so can distinguish own and
|
---|
| 947 | // other collections ??
|
---|
| 948 | e.setAttribute(GSXML.NAME_ATT, GSPath.prependLink(col_name, site_name));
|
---|
| 949 | this.collection_list.appendChild(this.doc.importNode(e, true));
|
---|
| 950 | }
|
---|
| 951 | }
|
---|
| 952 |
|
---|
| 953 | // service info
|
---|
| 954 | NodeList services = info_response.getElementsByTagName(GSXML.SERVICE_ELEM);
|
---|
| 955 | if (services.getLength() > 0)
|
---|
| 956 | {
|
---|
| 957 | for (int i = 0; i < services.getLength(); i++)
|
---|
| 958 | {
|
---|
| 959 | Element e = (Element) services.item(i);
|
---|
| 960 | String serv_name = e.getAttribute(GSXML.NAME_ATT);
|
---|
| 961 | e.setAttribute(GSXML.NAME_ATT, GSPath.prependLink(serv_name, site_name));
|
---|
| 962 | this.service_list.appendChild(this.doc.importNode(e, true));
|
---|
| 963 | }
|
---|
| 964 | }
|
---|
| 965 |
|
---|
| 966 | // serviceCluster info
|
---|
| 967 | NodeList clusters = info_response.getElementsByTagName(GSXML.CLUSTER_ELEM);
|
---|
| 968 | if (clusters.getLength() > 0)
|
---|
| 969 | {
|
---|
| 970 | for (int i = 0; i < clusters.getLength(); i++)
|
---|
| 971 | {
|
---|
| 972 | Element e = (Element) clusters.item(i);
|
---|
| 973 | String clus_name = e.getAttribute(GSXML.NAME_ATT);
|
---|
| 974 | e.setAttribute(GSXML.NAME_ATT, GSPath.prependLink(clus_name, site_name));
|
---|
| 975 | this.cluster_list.appendChild(this.doc.importNode(e, true));
|
---|
| 976 | }
|
---|
| 977 | }
|
---|
| 978 | return true;
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 | protected boolean activateServiceClusterByName(String cluster_name)
|
---|
| 982 | {
|
---|
| 983 | return false;
|
---|
| 984 |
|
---|
| 985 | }
|
---|
| 986 |
|
---|
| 987 | protected boolean activateServiceRackByName(String module_name)
|
---|
| 988 | {
|
---|
| 989 | return false;
|
---|
| 990 | }
|
---|
| 991 |
|
---|
| 992 | protected boolean deactivateModule(String type, String name)
|
---|
| 993 | {
|
---|
| 994 |
|
---|
| 995 | logger.info("deactivating " + type + " module: " + name);
|
---|
| 996 | if (this.module_map.containsKey(name))
|
---|
| 997 | {
|
---|
| 998 |
|
---|
| 999 | logger.info("found the module");
|
---|
| 1000 | ModuleInterface m = this.module_map.remove(name);
|
---|
| 1001 | // also remove the xml bit from description list
|
---|
| 1002 | if (type.equals(GSXML.COLLECTION_ELEM))
|
---|
| 1003 | {
|
---|
| 1004 | if (((Collection) m).isPublic())
|
---|
| 1005 | {
|
---|
| 1006 | Element this_col = GSXML.getNamedElement(this.collection_list, GSXML.COLLECTION_ELEM, GSXML.NAME_ATT, name);
|
---|
| 1007 | if (this_col != null)
|
---|
| 1008 | {
|
---|
| 1009 | this.collection_list.removeChild(this_col);
|
---|
| 1010 | }
|
---|
| 1011 | if (((Collection) m).hasOAI())
|
---|
| 1012 | {
|
---|
| 1013 | this_col = GSXML.getNamedElement(this.oai_collection_list, GSXML.COLLECTION_ELEM, GSXML.NAME_ATT, name);
|
---|
| 1014 | if (this_col != null)
|
---|
| 1015 | {
|
---|
| 1016 | this.oai_collection_list.removeChild(this_col);
|
---|
| 1017 | }
|
---|
| 1018 | }
|
---|
| 1019 | }
|
---|
| 1020 | else
|
---|
| 1021 | {
|
---|
| 1022 | // a private collection
|
---|
| 1023 | Element this_col = GSXML.getNamedElement(this.private_collection_list, GSXML.COLLECTION_ELEM, GSXML.NAME_ATT, name);
|
---|
| 1024 | if (this_col != null)
|
---|
| 1025 | {
|
---|
| 1026 | this.private_collection_list.removeChild(this_col);
|
---|
| 1027 | }
|
---|
| 1028 | }
|
---|
| 1029 | }
|
---|
| 1030 | else if (type.equals(GSXML.SERVICE_ELEM))
|
---|
| 1031 | {
|
---|
| 1032 | Element this_service = GSXML.getNamedElement(this.service_list, GSXML.SERVICE_ELEM, GSXML.NAME_ATT, name);
|
---|
| 1033 | if (this_service != null)
|
---|
| 1034 | {
|
---|
| 1035 | this.service_list.removeChild(this_service);
|
---|
| 1036 | }
|
---|
| 1037 | }
|
---|
| 1038 | else if (type.equals(GSXML.CLUSTER_ELEM))
|
---|
| 1039 | {
|
---|
| 1040 | Element this_cluster = GSXML.getNamedElement(this.cluster_list, GSXML.CLUSTER_ELEM, GSXML.NAME_ATT, name);
|
---|
| 1041 | if (this_cluster != null)
|
---|
| 1042 | {
|
---|
| 1043 | this.cluster_list.removeChild(this_cluster);
|
---|
| 1044 | }
|
---|
| 1045 | }
|
---|
| 1046 | else if (type.equals(GSXML.SITE_ELEM))
|
---|
| 1047 | {
|
---|
| 1048 | Element this_site = GSXML.getNamedElement(this.site_list, GSXML.SITE_ELEM, GSXML.NAME_ATT, name);
|
---|
| 1049 | if (this_site != null)
|
---|
| 1050 | {
|
---|
| 1051 | this.site_list.removeChild(this_site);
|
---|
| 1052 |
|
---|
| 1053 | // also remove this sites colls, services, clusters etc
|
---|
| 1054 | cleanUpModuleMapSubset(this.collection_list, name);
|
---|
| 1055 | cleanUpModuleMapSubset(this.cluster_list, name);
|
---|
| 1056 | cleanUpModuleMapSubset(this.service_list, name);
|
---|
| 1057 |
|
---|
| 1058 | // can remote collections be in the oai_coll list, or private coll list ??
|
---|
| 1059 | }
|
---|
| 1060 | }
|
---|
| 1061 | else
|
---|
| 1062 | {
|
---|
| 1063 | logger.error("invalid module type: " + type + ", can't remove info about this module");
|
---|
| 1064 | }
|
---|
| 1065 |
|
---|
| 1066 | m.cleanUp(); // clean up any open files/connections etc - can cause trouble on windows
|
---|
| 1067 | m = null;
|
---|
| 1068 | return true;
|
---|
| 1069 | }
|
---|
| 1070 | // else not deactivated
|
---|
| 1071 | logger.error(name + " module not found");
|
---|
| 1072 | return false;
|
---|
| 1073 |
|
---|
| 1074 | }
|
---|
| 1075 |
|
---|
| 1076 | //*****************************************************************
|
---|
| 1077 | // auxiliary process methods
|
---|
| 1078 | //*****************************************************************
|
---|
| 1079 |
|
---|
| 1080 | /**
|
---|
| 1081 | * handles requests made to the MessageRouter itself
|
---|
| 1082 | *
|
---|
| 1083 | * @param req
|
---|
| 1084 | * - the request Element- <request>
|
---|
| 1085 | * @return the result Element - should be <response>
|
---|
| 1086 | */
|
---|
| 1087 | protected Element processMessage(Element req)
|
---|
| 1088 | {
|
---|
| 1089 |
|
---|
| 1090 | // message for self, should be type=describe/configure at this stage
|
---|
| 1091 | String type = req.getAttribute(GSXML.TYPE_ATT);
|
---|
| 1092 | Element response = this.doc.createElement(GSXML.RESPONSE_ELEM);
|
---|
| 1093 | response.setAttribute(GSXML.FROM_ATT, "");
|
---|
| 1094 | if (type.equals(GSXML.REQUEST_TYPE_DESCRIBE))
|
---|
| 1095 | {
|
---|
| 1096 | response.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_DESCRIBE);
|
---|
| 1097 | // check the param list
|
---|
| 1098 | Element param_list = (Element) GSXML.getChildByTagName(req, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 1099 | if (param_list == null)
|
---|
| 1100 | {
|
---|
| 1101 | response.appendChild(this.collection_list);
|
---|
| 1102 | response.appendChild(this.cluster_list);
|
---|
| 1103 | response.appendChild(this.site_list);
|
---|
| 1104 | response.appendChild(this.service_list);
|
---|
| 1105 | response.appendChild(this.metadata_list);
|
---|
| 1106 | return response;
|
---|
| 1107 | }
|
---|
| 1108 |
|
---|
| 1109 | NodeList params = param_list.getElementsByTagName(GSXML.PARAM_ELEM);
|
---|
| 1110 |
|
---|
| 1111 | // go through the param list and see what components are wanted
|
---|
| 1112 | for (int i = 0; i < params.getLength(); i++)
|
---|
| 1113 | {
|
---|
| 1114 |
|
---|
| 1115 | Element param = (Element) params.item(i);
|
---|
| 1116 | // Identify the structure information desired
|
---|
| 1117 | if (param.getAttribute(GSXML.NAME_ATT).equals(GSXML.SUBSET_PARAM))
|
---|
| 1118 | {
|
---|
| 1119 | String info = param.getAttribute(GSXML.VALUE_ATT);
|
---|
| 1120 | if (info.equals(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1121 | {
|
---|
| 1122 | response.appendChild(this.collection_list);
|
---|
| 1123 | }
|
---|
| 1124 | else if (info.equals(GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1125 | {
|
---|
| 1126 | response.appendChild(this.cluster_list);
|
---|
| 1127 | }
|
---|
| 1128 | else if (info.equals(GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1129 | {
|
---|
| 1130 | response.appendChild(this.service_list);
|
---|
| 1131 | }
|
---|
| 1132 | else if (info.equals(GSXML.SITE_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1133 | {
|
---|
| 1134 | response.appendChild(this.site_list);
|
---|
| 1135 | }
|
---|
| 1136 | else if (info.equals(GSXML.METADATA_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1137 | {
|
---|
| 1138 | response.appendChild(this.metadata_list);
|
---|
| 1139 | }
|
---|
| 1140 | }
|
---|
| 1141 | }
|
---|
| 1142 | return response;
|
---|
| 1143 |
|
---|
| 1144 | }
|
---|
| 1145 |
|
---|
| 1146 | if (type.equals(OAIXML.OAI_SET_LIST))
|
---|
| 1147 | {
|
---|
| 1148 | logger.info("oaiSetList request received");
|
---|
| 1149 | //this is the oai receptionist asking for a list of oai-support collections
|
---|
| 1150 | response.setAttribute(GSXML.TYPE_ATT, OAIXML.OAI_SET_LIST);
|
---|
| 1151 | response.appendChild(this.oai_collection_list);
|
---|
| 1152 | return response;
|
---|
| 1153 | }
|
---|
| 1154 |
|
---|
| 1155 | if (type.equals(GSXML.REQUEST_TYPE_SYSTEM))
|
---|
| 1156 | {
|
---|
| 1157 |
|
---|
| 1158 | // a list of system requests - should put any error messages
|
---|
| 1159 | // or success messages into response
|
---|
| 1160 | NodeList commands = req.getElementsByTagName(GSXML.SYSTEM_ELEM);
|
---|
| 1161 | Element site_config_elem = null;
|
---|
| 1162 | boolean success = false;
|
---|
| 1163 |
|
---|
| 1164 | for (int i = 0; i < commands.getLength(); i++)
|
---|
| 1165 | {
|
---|
| 1166 | // all the commands should be Elements
|
---|
| 1167 | Element elem = (Element) commands.item(i);
|
---|
| 1168 | String action = elem.getAttribute(GSXML.TYPE_ATT);
|
---|
| 1169 |
|
---|
| 1170 | if (action.equals(GSXML.SYSTEM_TYPE_PING))
|
---|
| 1171 | { // ?a=s&sa=ping or ?a=s&sa=ping(&st=collection)&sn=colname
|
---|
| 1172 |
|
---|
| 1173 | String message = ""; // will be creating the same messages as in GS2's recept/pingaction.cpp
|
---|
| 1174 | String module_name = elem.getAttribute(GSXML.SYSTEM_MODULE_NAME_ATT);
|
---|
| 1175 | String module_type = elem.getAttribute(GSXML.SYSTEM_MODULE_TYPE_ATT);
|
---|
| 1176 |
|
---|
| 1177 | if (module_name.equals(""))
|
---|
| 1178 | { // server-level ping
|
---|
| 1179 | message = "Ping succeeded.";
|
---|
| 1180 | }
|
---|
| 1181 | else
|
---|
| 1182 | { // ping at collection level
|
---|
| 1183 | if (pingModule(module_name))
|
---|
| 1184 | {
|
---|
| 1185 | message = "Ping for " + module_name + " succeeded.";
|
---|
| 1186 | }
|
---|
| 1187 | else
|
---|
| 1188 | {
|
---|
| 1189 | message = "Ping for " + module_name + " did not succeed.";
|
---|
| 1190 | }
|
---|
| 1191 | }
|
---|
| 1192 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, message);
|
---|
| 1193 | response.appendChild(s);
|
---|
| 1194 | }
|
---|
| 1195 | //else if (action.equals(GSXML.SYSTEM_TYPE_ISPERSISTENT)) {
|
---|
| 1196 | // Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, "Persistent: true.");
|
---|
| 1197 | // response.appendChild(s);
|
---|
| 1198 | //}
|
---|
| 1199 | else if (action.equals(GSXML.SYSTEM_TYPE_CONFIGURE))
|
---|
| 1200 | {
|
---|
| 1201 | String subset = elem.getAttribute(GSXML.SYSTEM_SUBSET_ATT);
|
---|
| 1202 | if (subset.equals(""))
|
---|
| 1203 | {
|
---|
| 1204 | // need to reconfigure the MR
|
---|
| 1205 | this.configureLocalSite();
|
---|
| 1206 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, "MessageRouter reconfigured successfully");
|
---|
| 1207 | response.appendChild(s);
|
---|
| 1208 |
|
---|
| 1209 | }
|
---|
| 1210 | else
|
---|
| 1211 | {
|
---|
| 1212 | // else it a specific request
|
---|
| 1213 | if (subset.equals(GSXML.COLLECTION_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1214 | {
|
---|
| 1215 | // get rid of all the old collection stuff (not counting remote ones) before activating all the new ones
|
---|
| 1216 | cleanUpModuleMapSubset(this.collection_list, null);
|
---|
| 1217 | cleanUpModuleMapSubset(this.private_collection_list, null);
|
---|
| 1218 | success = configureCollections();
|
---|
| 1219 | }
|
---|
| 1220 | else
|
---|
| 1221 | {
|
---|
| 1222 |
|
---|
| 1223 | // need the site config file
|
---|
| 1224 | if (site_config_elem == null)
|
---|
| 1225 | {
|
---|
| 1226 |
|
---|
| 1227 | File configFile = new File(GSFile.siteConfigFile(this.site_home));
|
---|
| 1228 | if (!configFile.exists())
|
---|
| 1229 | {
|
---|
| 1230 | logger.error(" site config file: " + configFile.getPath() + " not found!");
|
---|
| 1231 | continue;
|
---|
| 1232 | }
|
---|
| 1233 | Document site_config_doc = this.converter.getDOM(configFile);
|
---|
| 1234 | if (site_config_doc == null)
|
---|
| 1235 | {
|
---|
| 1236 | logger.error(" couldn't parse site config file: " + configFile.getPath());
|
---|
| 1237 | continue;
|
---|
| 1238 | }
|
---|
| 1239 | site_config_elem = site_config_doc.getDocumentElement();
|
---|
| 1240 | }
|
---|
| 1241 | if (subset.equals(GSXML.SERVICE_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1242 | {
|
---|
| 1243 | Element service_rack_list = (Element) GSXML.getChildByTagName(site_config_elem, GSXML.SERVICE_CLASS_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 1244 | cleanUpModuleMapSubset(this.service_list, null);
|
---|
| 1245 | success = configureServices(service_rack_list);
|
---|
| 1246 | }
|
---|
| 1247 | else if (subset.equals(GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1248 | {
|
---|
| 1249 | Element cluster_list = (Element) GSXML.getChildByTagName(site_config_elem, GSXML.CLUSTER_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 1250 | cleanUpModuleMapSubset(this.cluster_list, null);
|
---|
| 1251 | success = configureClusters(cluster_list);
|
---|
| 1252 | }
|
---|
| 1253 | else if (subset.equals(GSXML.SITE_ELEM + GSXML.LIST_MODIFIER))
|
---|
| 1254 | {
|
---|
| 1255 | Element site_list = (Element) GSXML.getChildByTagName(site_config_elem, GSXML.SITE_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 1256 | cleanUpAllExternalSiteInfo();
|
---|
| 1257 | success = configureExternalSites(site_list);
|
---|
| 1258 | }
|
---|
| 1259 | }
|
---|
| 1260 | String message = null;
|
---|
| 1261 | if (success)
|
---|
| 1262 | {
|
---|
| 1263 | message = subset + "reconfigured successfully";
|
---|
| 1264 | }
|
---|
| 1265 | else
|
---|
| 1266 | {
|
---|
| 1267 | message = "Error in reconfiguring " + subset;
|
---|
| 1268 | }
|
---|
| 1269 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, message);
|
---|
| 1270 | response.appendChild(s);
|
---|
| 1271 | }
|
---|
| 1272 |
|
---|
| 1273 | }
|
---|
| 1274 | else
|
---|
| 1275 | {
|
---|
| 1276 | String module_name = elem.getAttribute(GSXML.SYSTEM_MODULE_NAME_ATT);
|
---|
| 1277 | String module_type = elem.getAttribute(GSXML.SYSTEM_MODULE_TYPE_ATT);
|
---|
| 1278 |
|
---|
| 1279 | if (action.equals(GSXML.SYSTEM_TYPE_DEACTIVATE))
|
---|
| 1280 | {
|
---|
| 1281 | success = deactivateModule(module_type, module_name);
|
---|
| 1282 | if (success)
|
---|
| 1283 | {
|
---|
| 1284 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, module_type + ": " + module_name + " deactivated", GSXML.SYSTEM_TYPE_DEACTIVATE, GSXML.SUCCESS);
|
---|
| 1285 | response.appendChild(s);
|
---|
| 1286 | }
|
---|
| 1287 | else
|
---|
| 1288 | {
|
---|
| 1289 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, module_type + ": " + module_name + " could not be deactivated", GSXML.SYSTEM_TYPE_DEACTIVATE, GSXML.ERROR);
|
---|
| 1290 | response.appendChild(s);
|
---|
| 1291 | }
|
---|
| 1292 |
|
---|
| 1293 | }
|
---|
| 1294 | else if (action.equals(GSXML.SYSTEM_TYPE_ACTIVATE))
|
---|
| 1295 | {
|
---|
| 1296 | // we need to deactivate the module first, in case this is a
|
---|
| 1297 | // reconfigure
|
---|
| 1298 | deactivateModule(module_type, module_name);
|
---|
| 1299 | if (module_type.equals(GSXML.COLLECTION_ELEM))
|
---|
| 1300 | {
|
---|
| 1301 | success = activateCollectionByName(module_name);
|
---|
| 1302 | }
|
---|
| 1303 | else if (module_type.equals(GSXML.SITE_ELEM))
|
---|
| 1304 | {
|
---|
| 1305 | success = activateSiteByName(module_name);
|
---|
| 1306 | }
|
---|
| 1307 | else if (module_type.equals(GSXML.CLUSTER_ELEM))
|
---|
| 1308 | {
|
---|
| 1309 | success = activateServiceClusterByName(module_name);
|
---|
| 1310 | }
|
---|
| 1311 | if (success)
|
---|
| 1312 | {
|
---|
| 1313 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, module_type + ": " + module_name + " activated", GSXML.SYSTEM_TYPE_ACTIVATE, GSXML.SUCCESS);
|
---|
| 1314 | response.appendChild(s);
|
---|
| 1315 | }
|
---|
| 1316 | else
|
---|
| 1317 | {
|
---|
| 1318 | Element s = GSXML.createTextElement(this.doc, GSXML.STATUS_ELEM, module_type + ": " + module_name + " could not be activated", GSXML.SYSTEM_TYPE_ACTIVATE, GSXML.ERROR);
|
---|
| 1319 | response.appendChild(s);
|
---|
| 1320 | }
|
---|
| 1321 | }
|
---|
| 1322 | } // else not a configure action
|
---|
| 1323 | } // for all commands
|
---|
| 1324 | return response;
|
---|
| 1325 |
|
---|
| 1326 | } // system type request
|
---|
| 1327 |
|
---|
| 1328 | // if get here something has gone wrong
|
---|
| 1329 | logger.error(" cant process request:");
|
---|
| 1330 | logger.error(this.converter.getString(req));
|
---|
| 1331 | return null;
|
---|
| 1332 |
|
---|
| 1333 | }
|
---|
| 1334 |
|
---|
| 1335 | //* Used to copy nodes from one message to another. E.g. copy a response node to the next request. Not sure if this is actually used anywhere yet... */
|
---|
| 1336 |
|
---|
| 1337 | protected Element modifyMessages(Element request, Element message, Element result)
|
---|
| 1338 | {
|
---|
| 1339 | Element response = this.doc.createElement(GSXML.RESPONSE_ELEM);
|
---|
| 1340 | response.setAttribute(GSXML.FROM_ATT, "");
|
---|
| 1341 | response.setAttribute(GSXML.TYPE_ATT, GSXML.REQUEST_TYPE_MESSAGING);
|
---|
| 1342 |
|
---|
| 1343 | NodeList commands = request.getElementsByTagName("command");
|
---|
| 1344 | if (commands == null)
|
---|
| 1345 | {
|
---|
| 1346 | logger.error("no commands, " + converter.getPrettyString(request));
|
---|
| 1347 | return response;
|
---|
| 1348 | }
|
---|
| 1349 | for (int i = 0; i < commands.getLength(); i++)
|
---|
| 1350 | {
|
---|
| 1351 | Element action = (Element) commands.item(i);
|
---|
| 1352 | String type = action.getAttribute(GSXML.TYPE_ATT);
|
---|
| 1353 | if (type.equals("copyNode"))
|
---|
| 1354 | {
|
---|
| 1355 | // copies the from node as a child of to node
|
---|
| 1356 | String from_path = action.getAttribute("from");
|
---|
| 1357 | String to_path = action.getAttribute("to");
|
---|
| 1358 | Element from_node = null;
|
---|
| 1359 | String from_node_root = GSPath.getFirstLink(from_path);
|
---|
| 1360 | if (from_node_root.startsWith(GSXML.REQUEST_ELEM))
|
---|
| 1361 | {
|
---|
| 1362 | from_node = message;
|
---|
| 1363 | }
|
---|
| 1364 | else if (from_node_root.startsWith(GSXML.RESPONSE_ELEM))
|
---|
| 1365 | {
|
---|
| 1366 | from_node = result;
|
---|
| 1367 | }
|
---|
| 1368 | if (from_node == null)
|
---|
| 1369 | {
|
---|
| 1370 | continue;
|
---|
| 1371 | }
|
---|
| 1372 | Element to_node = null;
|
---|
| 1373 | String to_node_root = GSPath.getFirstLink(to_path);
|
---|
| 1374 | if (to_node_root.startsWith(GSXML.REQUEST_ELEM))
|
---|
| 1375 | {
|
---|
| 1376 | to_node = message;
|
---|
| 1377 | }
|
---|
| 1378 | else if (to_node_root.startsWith(GSXML.RESPONSE_ELEM))
|
---|
| 1379 | {
|
---|
| 1380 | to_node = result;
|
---|
| 1381 | }
|
---|
| 1382 | if (to_node == null)
|
---|
| 1383 | {
|
---|
| 1384 | continue;
|
---|
| 1385 | }
|
---|
| 1386 | // now we know what node to copy where
|
---|
| 1387 | Node orig_node = GSXML.getNodeByPathIndexed(from_node, from_path);
|
---|
| 1388 | if (orig_node == null)
|
---|
| 1389 | {
|
---|
| 1390 | continue;
|
---|
| 1391 | }
|
---|
| 1392 | Node new_parent = GSXML.getNodeByPathIndexed(to_node, to_path);
|
---|
| 1393 | if (new_parent == null)
|
---|
| 1394 | {
|
---|
| 1395 | continue;
|
---|
| 1396 |
|
---|
| 1397 | }
|
---|
| 1398 | new_parent.appendChild(to_node.getOwnerDocument().importNode(orig_node, true));
|
---|
| 1399 | }
|
---|
| 1400 |
|
---|
| 1401 | else if (type.equals("copyChildren"))
|
---|
| 1402 | {
|
---|
| 1403 |
|
---|
| 1404 | }
|
---|
| 1405 | } // for each command
|
---|
| 1406 | return response;
|
---|
| 1407 | }
|
---|
| 1408 |
|
---|
| 1409 | // ****************************************************
|
---|
| 1410 | // other methods
|
---|
| 1411 | // ****************************************************
|
---|
| 1412 |
|
---|
| 1413 | }
|
---|