ActiveIO - 1.0

Clover coverage report - ActiveIO - 1.0 Coverage timestamp: Fri Apr 22 2005 14:27:22 PDT FRAMES NO FRAMES |
file stats: | LOC: | 202 |  | Methods: | 10
| NCLOC: | 125 |  | Classes: | 1
30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover
Source file | Conditionals | Statements | Methods | TOTAL
HowlJournal.java | 0% | 0% | 0% | 0% |

1 |  |
     /**
2 |  |
      *
3 |  |
      * Copyright 2004 Hiram Chirino
4 |  |
      *
5 |  |
      * Licensed under the Apache License, Version 2.0 (the "License");
6 |  |
      * you may not use this file except in compliance with the License.
7 |  |
      * You may obtain a copy of the License at
8 |  |
      *
9 |  |
      * http://www.apache.org/licenses/LICENSE-2.0
10 |  |
      *
11 |  |
      * Unless required by applicable law or agreed to in writing, software
12 |  |
      * distributed under the License is distributed on an "AS IS" BASIS,
13 |  |
      * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 |  |
      * See the License for the specific language governing permissions and
15 |  |
      * limitations under the License.
16 |  |
      *
17 |  |
      **/
18 |  |
     package org.activeio.journal.howl;
19 |  |
20 |  |
     import java.io.IOException;
21 |  |
     import java.io.InterruptedIOException;
22 |  |
23 |  |
     import org.activeio.Packet;
24 |  |
     import org.activeio.journal.InvalidRecordLocationException;
25 |  |
     import org.activeio.journal.Journal;
26 |  |
     import org.activeio.journal.JournalEventListener;
27 |  |
     import org.activeio.journal.RecordLocation;
28 |  |
     import org.activeio.packet.ByteArrayPacket;
29 |  |
     import org.objectweb.howl.log.Configuration;
30 |  |
     import org.objectweb.howl.log.InvalidFileSetException;
31 |  |
     import org.objectweb.howl.log.InvalidLogBufferException;
32 |  |
     import org.objectweb.howl.log.InvalidLogKeyException;
33 |  |
     import org.objectweb.howl.log.LogConfigurationException;
34 |  |
     import org.objectweb.howl.log.LogEventListener;
35 |  |
     import org.objectweb.howl.log.LogRecord;
36 |  |
     import org.objectweb.howl.log.Logger;
37 |  |
38 |  |
     /**
39 |  |
      * An implementation of the Journal interface using a HOWL logger.  This is is a thin
40 |  |
      * wrapper around a HOWL logger.
41 |  |
      *
42 |  |
      * This implementation can be used to write records but not to retreive them
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      * yet. Once the HOWL logger implements the methods needed to retreive
44 |  |
      * previously stored records, this class can be completed.
45 |  |
      *
46 |  |
      * @version $Revision: 1.2 $
47 |  |
      */
48 |  |
     public class HowlJournal implements Journal {
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50 |  |
         private final Logger logger;
51 |  |
52 |  |
         private RecordLocation lastMark;
53 |  |
54 | 0 |
         public HowlJournal(Configuration configuration)
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                 throws InvalidFileSetException, LogConfigurationException,
56 |  |
                 InvalidLogBufferException, ClassNotFoundException, IOException,
57 |  |
                 InterruptedException {
58 | 0 |
             this.logger = new Logger(configuration);
59 | 0 |
             this.logger.open();
60 | 0 |
             lastMark = new LongRecordLocation(logger.getActiveMark());
61 |  |
         }
62 |  |
63 |  |
         /**
64 |  |
          * @see org.activeio.journal.Journal#write(byte[], boolean)
65 |  |
          */
66 | 0 |
         public RecordLocation write(Packet packet, boolean sync) throws IOException {
67 | 0 |
             try {
68 | 0 |
                 return new LongRecordLocation(logger.put(packet.sliceAsBytes(), sync));
69 |  |
             } catch (InterruptedException e) {
70 | 0 |
                 throw (InterruptedIOException) new InterruptedIOException()
71 |  |
                         .initCause(e);
72 |  |
             } catch (IOException e) {
73 | 0 |
                 throw e;
74 |  |
             } catch (Exception e) {
75 | 0 |
                 throw (IOException) new IOException("Journal write failed: " + e)
76 |  |
                         .initCause(e);
77 |  |
             }
78 |  |
         }
79 |  |
80 |  |
         /**
81 |  |
          * @see org.activeio.journal.Journal#setMark(org.codehaus.activemq.journal.RecordLocation, boolean)
82 |  |
          */
83 | 0 |
         public void setMark(RecordLocation recordLocator, boolean force)
84 |  |
                 throws InvalidRecordLocationException, IOException {
85 | 0 |
             try {
86 | 0 |
                 long location = toLong(recordLocator);
87 | 0 |
                 logger.mark(location, force);
88 | 0 |
                 lastMark = recordLocator;
89 |  |
90 |  |
             } catch (InterruptedException e) {
91 | 0 |
                 throw (InterruptedIOException) new InterruptedIOException()
92 |  |
                         .initCause(e);
93 |  |
             } catch (IOException e) {
94 | 0 |
                 throw e;
95 |  |
             } catch (InvalidLogKeyException e) {
96 | 0 |
                 throw new InvalidRecordLocationException(e.getMessage(), e);
97 |  |
             } catch (Exception e) {
98 | 0 |
                 throw (IOException) new IOException("Journal write failed: " + e)
99 |  |
                         .initCause(e);
100 |  |
             }
101 |  |
         }
102 |  |
103 |  |
         /**
104 |  |
          * @param recordLocator
105 |  |
          * @return
106 |  |
          * @throws InvalidRecordLocationException
107 |  |
          */
108 | 0 |
         private long toLong(RecordLocation recordLocator) throws InvalidRecordLocationException {
109 | 0 |
             if (recordLocator == null
110 |  |
                     || recordLocator.getClass() != LongRecordLocation.class)
111 | 0 |
                 throw new InvalidRecordLocationException();
112 |  |
113 | 0 |
             long location = ((LongRecordLocation) recordLocator)
114 |  |
                     .getLongLocation();
115 | 0 |
             return location;
116 |  |
         }
117 |  |
118 |  |
         /**
119 |  |
          * @see org.activeio.journal.Journal#getMark()
120 |  |
          */
121 | 0 |
         public RecordLocation getMark() {
122 | 0 |
             return lastMark;
123 |  |
         }
124 |  |
125 |  |
         /**
126 |  |
          * @see org.activeio.journal.Journal#close()
127 |  |
          */
128 | 0 |
         public void close() throws IOException {
129 | 0 |
             try {
130 | 0 |
                 logger.close();
131 |  |
             } catch (IOException e) {
132 | 0 |
                 throw e;
133 |  |
             } catch (InterruptedException e) {
134 | 0 |
                 throw (InterruptedIOException) new InterruptedIOException()
135 |  |
                         .initCause(e);
136 |  |
             } catch (Exception e) {
137 | 0 |
                 throw (IOException) new IOException("Journal close failed: " + e)
138 |  |
                         .initCause(e);
139 |  |
             }
140 |  |
         }
141 |  |
142 |  |
         /**
143 |  |
          * @see org.activeio.journal.Journal#setJournalEventListener(org.codehaus.activemq.journal.JournalEventListener)
144 |  |
          */
145 | 0 |
         public void setJournalEventListener(final JournalEventListener eventListener) {
146 | 0 |
             logger.setLogEventListener(new LogEventListener() {
147 | 0 |
                 public void logOverflowNotification(long key) {
148 | 0 |
                     eventListener.overflowNotification(new LongRecordLocation(key));
149 |  |
                 }
150 |  |
             });
151 |  |
         }
152 |  |
153 |  |
         /**
154 |  |
          * @see org.activeio.journal.Journal#getNextRecordLocation(org.codehaus.activemq.journal.RecordLocation)
155 |  |
          */
156 | 0 |
         public RecordLocation getNextRecordLocation(RecordLocation lastLocation)
157 |  |
                 throws InvalidRecordLocationException {
158 |  |
159 | 0 |
             if( lastLocation ==null ) {
160 | 0 |
                 if( this.lastMark !=null ) {
161 | 0 |
                     lastLocation = lastMark;
162 |  |
                 } else {
163 | 0 |
                     return null;
164 |  |
                 }
165 |  |
             }
166 |  |
167 | 0 |
             try {
168 | 0 |
                 while(true) {
169 | 0 |
                     LogRecord record = logger.get(null, toLong(lastLocation));
170 |  |
                     // I assume getNext will return null if there is no next record.
171 | 0 |
                     LogRecord next = logger.getNext(record);
172 | 0 |
                     if( next==null || next.length == 0 )
173 | 0 |
                         return null;
174 | 0 |
                     lastLocation = new LongRecordLocation(next.key);
175 | 0 |
                     if( !next.isCTRL() )
176 | 0 |
                         return lastLocation;
177 |  |
                 }
178 |  |
             } catch (Exception e) {
179 | 0 |
                 throw (InvalidRecordLocationException)new InvalidRecordLocationException().initCause(e);
180 |  |
             }
181 |  |
182 |  |
         }
183 |  |
184 |  |
         /**
185 |  |
          * @see org.activeio.journal.Journal#read(org.codehaus.activemq.journal.RecordLocation)
186 |  |
          */
187 | 0 |
         public Packet read(RecordLocation location)
188 |  |
                 throws InvalidRecordLocationException, IOException {
189 |  |
190 | 0 |
             try {
191 | 0 |
                 LogRecord record = logger.get(null, toLong(location));
192 | 0 |
                 return new ByteArrayPacket(record.data);
193 |  |
             } catch (InvalidLogKeyException e) {
194 | 0 |
                 throw new InvalidRecordLocationException(e.getMessage(), e);
195 |  |
             } catch (Exception e) {
196 | 0 |
                 throw (IOException) new IOException("Journal write failed: " + e)
197 |  |
                         .initCause(e);
198 |  |
             }
199 |  |
200 |  |
         }
201 |  |
202 |  |
     }