From ae9863bf787a34a276b4118239ea1946e1abc679 Mon Sep 17 00:00:00 2001
From: "Brian S. O'Neill" <bronee@gmail.com>
Date: Thu, 7 Jan 2010 00:10:17 +0000
Subject: Add option to keep old transaction log files.

---
 .../carbonado/repo/sleepycat/BDBRepository.java       |  2 ++
 .../repo/sleepycat/BDBRepositoryBuilder.java          | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

(limited to 'src/main')

diff --git a/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepository.java b/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepository.java
index 28fc347..dabb4fb 100644
--- a/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepository.java
+++ b/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepository.java
@@ -112,6 +112,7 @@ abstract class BDBRepository<Txn> extends AbstractRepository<Txn>
     private final Map<Class<?>, Integer> mDatabasePageSizes;
 
     final boolean mRunCheckpointer;
+    final boolean mKeepOldLogFiles;
     final boolean mRunDeadlockDetector;
 
     final File mDataHome;
@@ -155,6 +156,7 @@ abstract class BDBRepository<Txn> extends AbstractRepository<Txn>
         mTxnMgr = new BDBTransactionManager<Txn>(mExTransformer, this);
 
         mRunCheckpointer = !builder.getReadOnly() && builder.getRunCheckpointer();
+        mKeepOldLogFiles = builder.getKeepOldLogFiles();
         mRunDeadlockDetector = builder.getRunDeadlockDetector();
         mStorableCodecFactory = builder.getStorableCodecFactory();
         mPreShutdownHook = builder.getPreShutdownHook();
diff --git a/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java b/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java
index 0beea65..f3c80ae 100644
--- a/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java
+++ b/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java
@@ -108,6 +108,7 @@ public class BDBRepositoryBuilder extends AbstractRepositoryBuilder {
     private int mCheckpointInterval = DEFAULT_CHECKPOINT_INTERVAL;
     private int mCheckpointThresholdKB = 1024;
     private int mCheckpointThresholdMinutes = 5;
+    private boolean mKeepOldLogFiles;
     private boolean mRunDeadlockDetector = true;
     private Boolean mChecksumEnabled;
     private Object mInitialEnvConfig = null;
@@ -741,6 +742,24 @@ public class BDBRepositoryBuilder extends AbstractRepositoryBuilder {
         return mCheckpointThresholdMinutes;
     }
 
+    /**
+     * By default, transaction log files are deleted when no longer needed.
+     * Keeping log files can be used for incremental backups or for diagnosing
+     * problems. If using BDB-JE, old log files are renamed with a ".del"
+     * extension. If using BDB-core, the db_archive utility is required for
+     * identifying old log files.
+     */
+    public void setKeepOldLogFiles(boolean keep) {
+        mKeepOldLogFiles = keep;
+    }
+
+    /**
+     * Returns false by default.
+     */
+    public boolean getKeepOldLogFiles() {
+        return mKeepOldLogFiles;
+    }
+
     /**
      * Disable automatic deadlock detection of database if another thread is
      * responsible for that.
-- 
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