Source Code Cross Referenced for AssetInitializerServiceComponent.java in  » Science » Cougaar12_4 » org » cougaar » planning » ldm » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Science » Cougaar12_4 » org.cougaar.planning.ldm 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * <copyright>
003:         *  
004:         *  Copyright 1997-2004 BBNT Solutions, LLC
005:         *  under sponsorship of the Defense Advanced Research Projects
006:         *  Agency (DARPA).
007:         * 
008:         *  You can redistribute this software and/or modify it under the
009:         *  terms of the Cougaar Open Source License as published on the
010:         *  Cougaar Open Source Website (www.cougaar.org).
011:         * 
012:         *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
013:         *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
014:         *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
015:         *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
016:         *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
017:         *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
018:         *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
019:         *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
020:         *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
021:         *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
022:         *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
023:         *  
024:         * </copyright>
025:         */
026:
027:        package org.cougaar.planning.ldm;
028:
029:        import org.cougaar.core.component.Component;
030:        import org.cougaar.core.component.ServiceBroker;
031:        import org.cougaar.core.component.ServiceProvider;
032:        import org.cougaar.core.node.DBInitializerService;
033:        import org.cougaar.core.node.Node;
034:        import org.cougaar.core.node.NodeControlService;
035:        import org.cougaar.core.service.LoggingService;
036:        import org.cougaar.planning.service.AssetInitializerService;
037:        import org.cougaar.util.ConfigFinder;
038:        import org.cougaar.util.GenericStateModelAdapter;
039:        import org.cougaar.util.Parameters;
040:
041:        import java.io.File;
042:        import java.io.IOException;
043:        import java.io.InputStream;
044:
045:        /**
046:         * A component which creates and advertises the appropriate
047:         * AssetInitializerService ServiceProvider.
048:         * <p/>
049:         * The rule is that we use the CSMART DB if components were intialized from there.
050:         * Otherwise, if the components coming from XML,
051:         * we use the non-CSMART DB. Otherwise we try to initialize from INI-style files.
052:         * <p/>
053:         *
054:         * @see FileAssetInitializerServiceProvider
055:         * @see DBAssetInitializerServiceProvider
056:         * @see NonCSMARTDBInitializerServiceImpl
057:         */
058:        public final class AssetInitializerServiceComponent extends
059:                GenericStateModelAdapter implements  Component {
060:
061:            // Used below to confirm good cougaar.rc file for use with XML files
062:            private static final String DATABASE = "org.cougaar.refconfig.database";
063:            private static final String USER = "org.cougaar.refconfig.user";
064:            private static final String PASSWORD = "org.cougaar.refconfig.password";
065:
066:            private ServiceBroker sb;
067:
068:            private DBInitializerService dbInit = null;
069:            private ServiceProvider theSP;
070:            private LoggingService log;
071:
072:            // ignore "setServiceBroker", we want the node-level service broker
073:
074:            public void setNodeControlService(NodeControlService ncs) {
075:                if (ncs == null) {
076:                    // Revocation
077:                } else {
078:                    this .sb = ncs.getRootServiceBroker();
079:                }
080:            }
081:
082:            public void load() {
083:                super .load();
084:
085:                log = (LoggingService) sb.getService(this ,
086:                        LoggingService.class, null);
087:                if (log == null) {
088:                    log = LoggingService.NULL;
089:                }
090:
091:                // Do not provide this service if there is already one there.
092:                // This allows someone to provide their own component to provide
093:                // the asset initializer service in their configuration
094:                if (sb.hasService(AssetInitializerService.class)) {
095:                    // already have AssetInitializer service!
096:                    //
097:                    // leave the existing service in place
098:                    if (log.isInfoEnabled()) {
099:                        log
100:                                .info("Not loading the default asset initializer service");
101:                    }
102:                    if (log != LoggingService.NULL) {
103:                        sb.releaseService(this , LoggingService.class, log);
104:                        log = null;
105:                    }
106:                    return;
107:                }
108:
109:                theSP = chooseSP();
110:                if (theSP != null)
111:                    sb.addService(AssetInitializerService.class, theSP);
112:
113:                if (log != LoggingService.NULL) {
114:                    sb.releaseService(this , LoggingService.class, log);
115:                    log = null;
116:                }
117:            }
118:
119:            public void unload() {
120:                if (theSP != null) {
121:                    sb.revokeService(AssetInitializerService.class, theSP);
122:                    theSP = null;
123:                }
124:
125:                super .unload();
126:            }
127:
128:            // If the DB property was supplied and we have a DBInializerService,
129:            // we initializer Organization/Entity assets from the configuration.database
130:            // Otherwise if the XML property was supplied, we check for a valid
131:            // cougaar.rc file for the refconfig.database. If we have one,
132:            // we try to initialize assets from that database.
133:            // If we have no such cougaar.rc file, or if some other
134:            // parameter was supplied, we initialize assets strictly
135:            // from files. 
136:            private ServiceProvider chooseSP() {
137:                try {
138:                    ServiceProvider sp = null;
139:                    String prop = System.getProperty(Node.INITIALIZER_PROP);
140:
141:                    // If user specified to load from the database
142:                    if (prop != null && prop.indexOf("DB") != -1) {
143:                        // Init from CSMART DB
144:                        dbInit = (DBInitializerService) sb.getService(this ,
145:                                DBInitializerService.class, null);
146:                        if (dbInit != null) {
147:                            if (log.isInfoEnabled())
148:                                log.info("Will init OrgAssets from CSMART DB");
149:                        }
150:                    } else if (prop != null && prop.indexOf("XML") != -1) {
151:                        // Else if user specified to load from XML
152:                        // First check to see if user set up a DB for use with XML files
153:                        if (rcFileExists() && isValidRCFile()) {
154:                            // Initing config from XML. Assets will come from non-CSMART DB
155:                            // Create a new DBInitializerService
156:                            dbInit = new NonCSMARTDBInitializerServiceImpl();
157:                            if (dbInit != null) {
158:                                if (log.isInfoEnabled()) {
159:                                    log
160:                                            .info("Will init OrgAssets from NON CSMART DB!");
161:                                }
162:                            }
163:                        }
164:                    }
165:
166:                    // If we got a good DB set up, then use that.
167:                    if (dbInit != null) {
168:                        sp = new DBAssetInitializerServiceProvider(dbInit);
169:                    }
170:
171:                    // Handle this separately in case the above fails somehow
172:                    if (sp == null) {
173:                        // If user specified INI files, or set up no database, ie
174:                        // if didn't get a good DBInitializerService, then
175:                        // use files. This may be INI or XML.
176:                        sp = new FileAssetInitializerServiceProvider();
177:                        if (log.isInfoEnabled())
178:                            log
179:                                    .info("Not using a database, initializing solely from Files.");
180:                    }
181:
182:                    return sp;
183:                } catch (Exception e) {
184:                    log.error(
185:                            "Exception while creating AssetInitializerService",
186:                            e);
187:                    return null;
188:                }
189:            }
190:
191:            // Helper function to check for a cougaar.rc file without parsing it
192:            private boolean rcFileExists() {
193:                boolean found = false;
194:                try {
195:                    File f = new File(System.getProperty("user.home")
196:                            + File.separator + ".cougaarrc");
197:                    if (!f.exists()) {
198:                        InputStream in = ConfigFinder.getInstance().open(
199:                                "cougaar.rc");
200:                        if (in != null) {
201:                            found = true;
202:                        }
203:                    } else {
204:                        found = true;
205:                    }
206:                } catch (IOException e) {
207:                    //We really do want to ignore this!
208:                }
209:
210:                if (!found) {
211:                    // util.Parameters will tell people this already
212:                    if (log.isInfoEnabled())
213:                        log.info("No Cougaar rc file found.");
214:                }
215:
216:                return found;
217:            }
218:
219:            // Use Parameters utilities parse of the cougaar.rc file
220:            // to check for key parameters needed when running from XML files
221:            private boolean isValidRCFile() {
222:                boolean valid = false;
223:
224:                valid = (Parameters.findParameter(DATABASE) == null) ? false
225:                        : true;
226:                valid &= (Parameters.findParameter(USER) == null) ? false
227:                        : true;
228:                valid &= (Parameters.findParameter(PASSWORD) == null) ? false
229:                        : true;
230:                return valid;
231:            }
232:
233:        }
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