Remove ask-based protocol client

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / TransactionContextCleanup.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionContextCleanup.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionContextCleanup.java
deleted file mode 100644 (file)
index ef8cc49..0000000
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionContextCleanup.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Copyright (c) 2015 Brocade Communications Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.datastore;
-
-import com.google.common.base.FinalizablePhantomReference;
-import com.google.common.base.FinalizableReferenceQueue;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * A PhantomReference that closes remote transactions for a TransactionContext when it's
- * garbage collected. This is used for read-only transactions as they're not explicitly closed
- * by clients. So the only way to detect that a transaction is no longer in use and it's safe
- * to clean up is when it's garbage collected. It's inexact as to when an instance will be GC'ed
- * but TransactionProxy instances should generally be short-lived enough to avoid being moved
- * to the old generation space and thus should be cleaned up in a timely manner as the GC
- * runs on the young generation (eden, swap1...) space much more frequently.
- */
-final class TransactionContextCleanup extends FinalizablePhantomReference<TransactionProxy> {
-    private static final Logger LOG = LoggerFactory.getLogger(TransactionContextCleanup.class);
-    /**
-     * Used to enqueue the PhantomReferences for read-only TransactionProxy instances. The
-     * FinalizableReferenceQueue is safe to use statically in an OSGi environment as it uses some
-     * trickery to clean up its internal thread when the bundle is unloaded.
-     */
-    private static final FinalizableReferenceQueue QUEUE = new FinalizableReferenceQueue();
-
-    /**
-     * This stores the TransactionProxyCleanupPhantomReference instances statically, This is
-     * necessary because PhantomReferences need a hard reference so they're not garbage collected.
-     * Once finalized, the TransactionProxyCleanupPhantomReference removes itself from this map
-     * and thus becomes eligible for garbage collection.
-     */
-    private static final Map<TransactionContext, TransactionContextCleanup> CACHE = new ConcurrentHashMap<>();
-
-    private final TransactionContext cleanup;
-
-    private TransactionContextCleanup(final TransactionProxy referent, final TransactionContext cleanup) {
-        super(referent, QUEUE);
-        this.cleanup = cleanup;
-    }
-
-    static void track(final TransactionProxy referent, final TransactionContext cleanup) {
-        final TransactionContextCleanup ret = new TransactionContextCleanup(referent, cleanup);
-        CACHE.put(cleanup, ret);
-    }
-
-    @Override
-    public void finalizeReferent() {
-        LOG.trace("Cleaning up {} Tx actors", cleanup);
-
-        if (CACHE.remove(cleanup) != null) {
-            cleanup.closeTransaction();
-        }
-    }
-
-    static void untrack(final TransactionContext cleanup) {
-        CACHE.remove(cleanup);
-    }
-}
\ No newline at end of file