Source Code Cross Referenced for StressTest.java in  » Database-ORM » db-ojb » org » apache » ojb » ejb » odmg » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.ejb.odmg 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.apache.ojb.ejb.odmg;
002:
003:        /* Copyright 2004-2005 The Apache Software Foundation
004:         *
005:         * Licensed under the Apache License, Version 2.0 (the "License");
006:         * you may not use this file except in compliance with the License.
007:         * You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:
018:        import javax.ejb.EJBHome;
019:        import javax.naming.Context;
020:        import javax.rmi.PortableRemoteObject;
021:        import java.math.BigDecimal;
022:        import java.util.ArrayList;
023:        import java.util.Iterator;
024:        import java.util.List;
025:
026:        import org.apache.commons.lang.SystemUtils;
027:        import org.apache.ojb.broker.OJBRuntimeException;
028:        import org.apache.ojb.ejb.ArticleVO;
029:        import org.apache.ojb.ejb.ContextHelper;
030:
031:        /**
032:         * stress test against one database using several threads
033:         *
034:         * @author <a href="mailto:armin@codeAuLait.de">Armin Waibel</a>.
035:         * @version $Id: StressTest.java,v 1.5.2.1 2005/12/21 22:21:39 tomdz Exp $
036:         */
037:        public class StressTest {
038:            private static int iterationsPerThread = 50;
039:            private static int concurrentThreads = 2;
040:            private ODMGSessionRemote bean;
041:            private static boolean testClientPass = true;
042:
043:            /**
044:             * times[0] startTime/test length
045:             * times[1] inserting times
046:             * times[2] fetching times
047:             * times[3] deleting times
048:             */
049:            private long[] times;
050:
051:            /**
052:             * The threads that are executing.
053:             */
054:            private Thread threads[] = null;
055:
056:            public StressTest() {
057:            }
058:
059:            public static void performTest(int[] args) throws Exception {
060:                if (args.length > 0) {
061:                    concurrentThreads = args[0];
062:                }
063:                if (args.length > 1) {
064:                    iterationsPerThread = args[1];
065:                }
066:
067:                StressTest test = new StressTest();
068:                int objectCount = 0;
069:                int objectCountAfter = 0;
070:                test.init();
071:                objectCount = test.getArticleCount();
072:                test.runMultithreaded();
073:
074:                System.out
075:                        .println("Test-Info:   Objects in DB before ODMG test: "
076:                                + objectCount);
077:                objectCountAfter = test.getArticleCount();
078:                System.out
079:                        .println("Test-Info:   Objects in DB after ODMG test: "
080:                                + objectCountAfter);
081:                System.out
082:                        .println("Test-Info:   Stress test was successful? - "
083:                                + (objectCount == objectCountAfter && testClientPass)
084:                                + " -");
085:                if (!testClientPass)
086:                    throw new RuntimeException("Test does not pass");
087:            }
088:
089:            /**
090:             * Setting up the test fixture.
091:             */
092:            private void init() throws Exception {
093:                Context ctx = ContextHelper.getContext();
094:                times = new long[4];
095:                try {
096:                    Object object = PortableRemoteObject.narrow(ctx
097:                            .lookup(ODMGSessionHome.JNDI_NAME), EJBHome.class);
098:                    bean = ((ODMGSessionHome) object).create();
099:                } catch (Exception e) {
100:                    e.printStackTrace(System.err);
101:                    throw e;
102:                }
103:            }
104:
105:            private int getArticleCount() throws Exception {
106:                try {
107:                    return bean.getArticleCount();
108:                } catch (java.rmi.RemoteException e) {
109:                    e.printStackTrace();
110:                    throw e;
111:                }
112:            }
113:
114:            private void runMultithreaded() throws Exception {
115:                String sep = SystemUtils.LINE_SEPARATOR;
116:
117:                System.out.println(sep + sep
118:                        + "++ Start thread generation for ODMG api test ++");
119:                System.out.println("Begin with performance test, "
120:                        + concurrentThreads + " concurrent threads, handle "
121:                        + iterationsPerThread + " articles per thread");
122:                ODMGTestClient[] clientsODMG = new ODMGTestClient[concurrentThreads];
123:                for (int i = 0; i < concurrentThreads; i++) {
124:                    ODMGTestClient obj = new ODMGTestClient(this );
125:                    clientsODMG[i] = obj;
126:                }
127:                System.out.println("");
128:                times[0] = System.currentTimeMillis();
129:                runTestClients(clientsODMG);
130:                times[0] = (System.currentTimeMillis() - times[0]);
131:                System.out.println(buildTestSummary("ODMG API"));
132:                System.out.println("++ End of performance test ODMG api ++"
133:                        + sep + sep);
134:            }
135:
136:            /**
137:             * Interrupt the running threads.
138:             */
139:            synchronized void interruptThreads() {
140:                testClientPass = false;
141:                if (threads != null) {
142:                    for (int i = 0; i < threads.length; i++) {
143:                        threads[i].interrupt();
144:                    }
145:                }
146:                System.err.println("## Test failed! ##");
147:                System.err.println("## Test failed! ##");
148:            }
149:
150:            /**
151:             * Run the threads.
152:             */
153:            void runTestClients(final TestClient[] runnables) throws Exception {
154:                if (runnables == null) {
155:                    throw new IllegalArgumentException("runnables is null");
156:                }
157:                threads = new Thread[runnables.length];
158:                for (int i = 0; i < threads.length; i++) {
159:                    threads[i] = new Thread(runnables[i]);
160:                }
161:                for (int i = 0; i < threads.length; i++) {
162:                    threads[i].start();
163:                    threads[i].join();
164:                }
165:                threads = null;
166:            }
167:
168:            synchronized void addTime(int position, long time) {
169:                times[position] = times[position] + time;
170:            }
171:
172:            private String buildTestSummary(String key) {
173:                String sep = System.getProperty("line.separator");
174:                StringBuffer buf = new StringBuffer();
175:                buf.append(sep);
176:                buf
177:                        .append("----------------------------------------------------");
178:                buf.append(sep);
179:                buf.append("TEST SUMMARY - " + key);
180:                buf.append(sep);
181:                buf.append(concurrentThreads + " concurrent threads, handle "
182:                        + iterationsPerThread + " articles per thread");
183:                buf.append(sep);
184:                buf.append("Test period: " + (((double) times[0]) / 1000)
185:                        + " [sec]");
186:                buf.append(sep);
187:                buf.append("Inserting period: " + times[1] + " [msec]");
188:                buf.append(sep);
189:                buf.append("Fetching period: " + times[2] + " [msec]");
190:                buf.append(sep);
191:                buf.append("Deleting period: " + times[3] + " [msec]");
192:                buf.append(sep);
193:                buf
194:                        .append("----------------------------------------------------");
195:
196:                return buf.toString();
197:            }
198:
199:            //*********************************************************************************
200:            // inner classes
201:            //*********************************************************************************
202:
203:            static abstract class TestClient implements  Runnable {
204:
205:            }
206:
207:            /**
208:             * ODMG-api test class
209:             */
210:            static class ODMGTestClient extends TestClient {
211:                private List articlesList;
212:                private ODMGSessionRemote bean;
213:                private String articleName;
214:                private StressTest test;
215:
216:                public ODMGTestClient(StressTest test) {
217:                    this .test = test;
218:                    init();
219:                    articlesList = new ArrayList();
220:                    articleName = "ODMGTestClient_"
221:                            + System.currentTimeMillis();
222:                    for (int i = 0; i < iterationsPerThread; i++) {
223:                        articlesList.add(createArticle(articleName));
224:                    }
225:                }
226:
227:                protected void init() {
228:                    Context ctx = ContextHelper.getContext();
229:                    try {
230:                        Object object = PortableRemoteObject.narrow(ctx
231:                                .lookup(ODMGSessionHome.JNDI_NAME),
232:                                EJBHome.class);
233:                        bean = ((ODMGSessionHome) object).create();
234:                    } catch (Exception e) {
235:                        e.printStackTrace();
236:                        throw new OJBRuntimeException("Can't lookup bean: "
237:                                + ODMGSessionHome.JNDI_NAME, e);
238:                    }
239:                }
240:
241:                public void run() {
242:                    //log.info("Thread "+this+" run");
243:                    try {
244:                        insertNewArticles();
245:                        readAllArticles();
246:                        deleteArticles();
247:                    } catch (Throwable e) {
248:                        System.err
249:                                .println("Error in client: " + e.getMessage());
250:                        test.interruptThreads();
251:                        throw new OJBRuntimeException(
252:                                "["
253:                                        + ODMGTestClient.class.getName()
254:                                        + "] Stress test client cause exception, thread was "
255:                                        + Thread.currentThread(), e);
256:                    }
257:                }
258:
259:                /**
260:                 * factory method that createa an ArticleVO
261:                 * @return the created ArticleVO object
262:                 */
263:                private ArticleVO createArticle(String articleName) {
264:                    ArticleVO a = new ArticleVO();
265:                    a.setName(articleName);
266:                    a.setPrice(new BigDecimal(0.45 * articleName.hashCode()));
267:                    a.setDescription("description " + articleName.hashCode());
268:                    return a;
269:                }
270:
271:                protected void deleteArticles() throws Exception {
272:                    long start = System.currentTimeMillis();
273:
274:                    bean.deleteObjects(articlesList);
275:
276:                    long stop = System.currentTimeMillis();
277:                    test.addTime(3, stop - start);
278:                }
279:
280:                protected void insertNewArticles() throws Exception {
281:                    long start = System.currentTimeMillis();
282:
283:                    articlesList = bean.storeObjects(articlesList);
284:
285:                    long stop = System.currentTimeMillis();
286:                    test.addTime(1, stop - start);
287:                }
288:
289:                protected void readAllArticles() throws Exception {
290:                    long start = System.currentTimeMillis();
291:
292:                    Iterator it = bean.getArticlesByName(articleName)
293:                            .iterator();
294:                    while (it.hasNext())
295:                        it.next();
296:
297:                    long stop = System.currentTimeMillis();
298:                    test.addTime(2, stop - start);
299:                }
300:            }
301:        }
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