legacy/runtime/org.argeo.slc.server/src/main/java/org/argeo/slc/web/ajaxplorer/svn/SvnLogAction.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.web.ajaxplorer.svn;
  17
  18 import java.io.File;
  19 import java.io.PrintWriter;
  20 import java.text.SimpleDateFormat;
  21 import java.util.List;
  22 import java.util.Map;
  23 import java.util.Vector;
  24
  25 import javax.servlet.http.HttpServletRequest;
  26 import javax.servlet.http.HttpServletResponse;
  27
  28 import org.apache.commons.io.IOUtils;
  29 import org.apache.commons.logging.Log;
  30 import org.apache.commons.logging.LogFactory;
  31 import org.argeo.slc.web.ajaxplorer.AjxpAction;
  32 import org.argeo.slc.web.ajaxplorer.AjxpAnswer;
  33 import org.argeo.slc.web.ajaxplorer.AjxpDriverException;
  34 import org.tmatesoft.svn.core.ISVNLogEntryHandler;
  35 import org.tmatesoft.svn.core.SVNException;
  36 import org.tmatesoft.svn.core.SVNLogEntry;
  37 import org.tmatesoft.svn.core.SVNLogEntryPath;
  38 import org.tmatesoft.svn.core.wc.SVNRevision;
  39
  40 public class SvnLogAction implements AjxpAction<SvnDriver> {
  41         private final SimpleDateFormat sdfIso = new SimpleDateFormat(
  42                         "yyyy-MM-dd HH:mm:ss");
  43         private final Log log = LogFactory.getLog(getClass());
  44
  45         public AjxpAnswer execute(SvnDriver driver, HttpServletRequest request) {
  46                 String fileStr = request.getParameter("file");
  47                 log.debug("Log file " + fileStr);
  48                 if (fileStr == null) {
  49                         throw new AjxpDriverException("A  file needs to be provided.");
  50                 }
  51                 File file = new File(driver.getBasePath() + fileStr);
  52                 return new SvnLogAnswer(driver, file);
  53         }
  54
  55         protected class SvnLogAnswer implements AjxpAnswer {
  56                 private final SvnDriver driver;
  57                 private final File file;
  58
  59                 public SvnLogAnswer(SvnDriver driver, File file) {
  60                         this.driver = driver;
  61                         this.file = file;
  62                 }
  63
  64                 public void updateResponse(HttpServletResponse response) {
  65                         PrintWriter writer = null;
  66                         try {
  67                                 writer = response.getWriter();
  68                                 writer.append("<tree>");
  69                                 writer.append("<log>");
  70
  71                                 final List<SVNLogEntry> logEntries = new Vector<SVNLogEntry>();
  72                                 ISVNLogEntryHandler logHandler = new ISVNLogEntryHandler() {
  73                                         public void handleLogEntry(SVNLogEntry logEntry)
  74                                                         throws SVNException {
  75                                                 logEntries.add(logEntry);
  76                                         }
  77                                 };
  78
  79                                 driver.getManager().getLogClient().doLog(new File[] { file },
  80                                                 SVNRevision.create(0), SVNRevision.HEAD, true, true,
  81                                                 100, logHandler);
  82
  83                                 for (int i = logEntries.size() - 1; i >= 0; i--) {
  84                                         String xml = logEntryAsXml(logEntries.get(i), file);
  85                                         if(log.isTraceEnabled())
  86                                                 log.trace(xml);
  87                                         writer.append(xml);
  88                                 }
  89
  90                                 writer.append("</log>");
  91                                 writer.append("</tree>");
  92                         } catch (Exception e) {
  93                                 throw new AjxpDriverException(
  94                                                 "Cannot retrieve log for " + file, e);
  95                         } finally {
  96                                 IOUtils.closeQuietly(writer);
  97                         }
  98                 }
  99
 100         }
 101
 102         protected String logEntryAsXml(SVNLogEntry entry, File file) {
 103                 StringBuffer buf = new StringBuffer();
 104                 buf.append("<logentry");
 105                 buf.append(" revision=\"").append(entry.getRevision()).append("\"");
 106                 buf.append(" is_file=\"").append(file.isDirectory() ? "0" : "1")
 107                                 .append("\"");
 108                 buf.append(">");
 109
 110                 buf.append("<author>").append(entry.getAuthor()).append("</author>");
 111                 buf.append("<date>").append(sdfIso.format(entry.getDate())).append(
 112                                 "</date>");
 113
 114                 buf.append("<paths>");
 115                 Map<Object, SVNLogEntryPath> paths = entry.getChangedPaths();
 116                 for (SVNLogEntryPath path : paths.values()) {
 117                         buf.append("<path>").append(path.getPath()).append("</path>");
 118                 }
 119                 buf.append("</paths>");
 120
 121                 buf.append("<msg>").append(entry.getMessage()).append("</msg>");
 122
 123                 buf.append("</logentry>");
 124                 return buf.toString();
 125         }
 126
 127 }