01: /*
02: * (c) Copyright 2007 by Volker Bergmann. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, is permitted under the terms of the
06: * GNU General Public License.
07: *
08: * For redistributing this software or a derivative work under a license other
09: * than the GPL-compatible Free Software License as defined by the Free
10: * Software Foundation or approved by OSI, you must first obtain a commercial
11: * license to this software product from Volker Bergmann.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
14: * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
15: * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
16: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
17: * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
18: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24: * POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: package org.databene.task;
28:
29: import org.apache.commons.logging.Log;
30: import org.apache.commons.logging.LogFactory;
31: import org.databene.document.csv.CSVLineIterator;
32: import org.databene.commons.BeanUtil;
33: import org.databene.commons.Context;
34:
35: import java.io.IOException;
36: import java.util.concurrent.ExecutorService;
37: import java.util.concurrent.Executors;
38:
39: /**
40: * Runs a task from its instance or from a config file.<br/>
41: * <br/>
42: * Created: 06.07.2007 06:37:20
43: * @author Volker Bergmann
44: */
45: public class TaskRunner {
46:
47: private static final Log logger = LogFactory
48: .getLog(TaskRunner.class);
49:
50: public static void run(Task task, Context context,
51: long invocations, PageListener pager, long pageSize,
52: int threadCount, ExecutorService executor) {
53: if (logger.isInfoEnabled()) {
54: String invocationInfo = (invocations == 1 ? ""
55: : invocations + " times with page size " + pageSize
56: + " in " + threadCount + " threads");
57: logger.info("Running task " + task + " " + invocationInfo);
58: }
59: PagedTask pagedTask = new PagedTask(task, invocations, pager,
60: pageSize, threadCount, executor);
61: pagedTask.init(context);
62: try {
63: pagedTask.run();
64: } finally {
65: pagedTask.destroy();
66: }
67: }
68:
69: /** @deprecated this is no longer supported */
70: public static void runFromConfigFile(String urn) throws IOException {
71: TaskContext context = new TaskContext();
72: CSVLineIterator iterator = new CSVLineIterator(urn, ',');
73: while (iterator.hasNext()) {
74: String[] cells = iterator.next();
75: if (cells.length == 0)
76: continue;
77: Class<Task> taskClass = BeanUtil.forName(cells[0]);
78: Task task = BeanUtil.newInstance(taskClass);
79: int invocations = Integer.parseInt(cells[1]);
80: int pageSize = Integer.parseInt(cells[2]);
81: int threadCount = Integer.parseInt(cells[3]);
82: run(task, context, invocations, null, pageSize,
83: threadCount, Executors.newCachedThreadPool());
84: }
85: iterator.close();
86: }
87:
88: }
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