1 files changed, 99 insertions, 0 deletions
diff --git a/sandbox/old/contrib/persistence/store.journal/src/main/java/org/apache/tuscany/persistence/store/journal/Journal.java b/sandbox/old/contrib/persistence/store.journal/src/main/java/org/apache/tuscany/persistence/store/journal/Journal.java
new file mode 100644
index 0000000000..b8dfd072c5
--- /dev/null
+++ b/sandbox/old/contrib/persistence/store.journal/src/main/java/org/apache/tuscany/persistence/store/journal/Journal.java
@@ -0,0 +1,99 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tuscany.persistence.store.journal;
+
+import java.io.IOException;
+
+import org.apache.tuscany.spi.services.store.StoreWriteException;
+
+import org.objectweb.howl.log.Configuration;
+import org.objectweb.howl.log.LogClosedException;
+import org.objectweb.howl.log.LogFileOverflowException;
+import org.objectweb.howl.log.LogRecordSizeException;
+import org.objectweb.howl.log.Logger;
+
+/**
+ * Extends the HOWL logger implementation adding convenience methods for processing records
+ *
+ * @version $Rev$ $Date$
+ */
+public class Journal extends Logger {
+    public static final short HEADER = 0;
+    public static final short RECORD = 1;
+
+    public Journal() throws IOException {
+    }
+
+    public Journal(Configuration config) throws IOException {
+        super(config);
+    }
+
+    /**
+     * Writes a header record to the log. The format of the header is defined by {@link
+     * SerializationHelper#createHeader(short, int, String, String, long)}
+     *
+     * @param bytes the record as a byte array
+     * @param force true if the disk write should be forced
+     * @return the log entry key
+     * @throws StoreWriteException
+     */
+    public long writeHeader(byte[] bytes, boolean force) throws StoreWriteException {
+        try {
+            return put(HEADER, new byte[][]{bytes}, force);
+        } catch (LogRecordSizeException e) {
+            throw new StoreWriteException(e);
+        } catch (LogFileOverflowException e) {
+            throw new StoreWriteException(e);
+        } catch (IOException e) {
+            throw new StoreWriteException(e);
+        } catch (LogClosedException e) {
+            throw new StoreWriteException(e);
+        } catch (InterruptedException e) {
+            throw new StoreWriteException(e);
+        }
+    }
+
+    /**
+     * Writes a record block to the log. The block may be the complete number of bytes or a chunked part of thereof if
+     * it does not fit within HOWL's block size limit.
+     *
+     * @param data  the data to write
+     * @param id    the unique record id consisting of the owner id and the UUID
+     * @param force true if the disk write should be force. For records that are written in multiple blocks, only the
+     *              last write should be forced.
+     * @return the log entry key
+     * @throws StoreWriteException
+     */
+    public long writeBlock(byte[] data, byte[] id, boolean force) throws StoreWriteException {
+        try {
+            return put(RECORD, new byte[][]{id, data}, force);
+        } catch (LogRecordSizeException e) {
+            throw new StoreWriteException(e);
+        } catch (LogFileOverflowException e) {
+            throw new StoreWriteException(e);
+        } catch (IOException e) {
+            throw new StoreWriteException(e);
+        } catch (LogClosedException e) {
+            throw new StoreWriteException(e);
+        } catch (InterruptedException e) {
+            throw new StoreWriteException(e);
+        }
+    }
+
+}