X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-inmemory-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fdom%2Fstore%2Fimpl%2FSnapshotBackedWriteTransaction.java;fp=opendaylight%2Fmd-sal%2Fsal-inmemory-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fdom%2Fstore%2Fimpl%2FSnapshotBackedWriteTransaction.java;h=16675d3a8563f0a4142d86e248243c790085e940;hb=cc36277f18d3efaa5635e4a64fb22490c8223ef9;hp=0000000000000000000000000000000000000000;hpb=18f8f0b852694daf18e8fd034ba576d78499e0ee;p=controller.git

diff --git a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedWriteTransaction.java b/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/SnapshotBackedWriteTransaction.java
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@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2014 Cisco 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.md.sal.dom.store.impl;
+
+import static com.google.common.base.Preconditions.checkState;
+
+
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
+import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.Objects.ToStringHelper;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Throwables;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
+
+/**
+ * Implementation of Write transaction which is backed by
+ * {@link DataTreeSnapshot} and executed according to
+ * {@link org.opendaylight.controller.md.sal.dom.store.impl.SnapshotBackedWriteTransaction.TransactionReadyPrototype}.
+ *
+ */
+class SnapshotBackedWriteTransaction extends AbstractDOMStoreTransaction implements DOMStoreWriteTransaction {
+
+    private static final Logger LOG = LoggerFactory.getLogger(SnapshotBackedWriteTransaction.class);
+    private DataTreeModification mutableTree;
+    private boolean ready = false;
+    private TransactionReadyPrototype readyImpl;
+
+    /**
+     * Creates new write-only transaction.
+     *
+     * @param identifier
+     *            transaction Identifier
+     * @param snapshot
+     *            Snapshot which will be modified.
+     * @param readyImpl
+     *            Implementation of ready method.
+     */
+    public SnapshotBackedWriteTransaction(final Object identifier, final DataTreeSnapshot snapshot,
+            final TransactionReadyPrototype readyImpl) {
+        super(identifier);
+        mutableTree = snapshot.newModification();
+        this.readyImpl = Preconditions.checkNotNull(readyImpl, "readyImpl must not be null.");
+        LOG.debug("Write Tx: {} allocated with snapshot {}", identifier, snapshot);
+    }
+
+    @Override
+    public void close() {
+        LOG.debug("Store transaction: {} : Closed", getIdentifier());
+        this.mutableTree = null;
+        this.readyImpl = null;
+    }
+
+    @Override
+    public void write(final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
+        checkNotReady();
+        try {
+            LOG.debug("Tx: {} Write: {}:{}", getIdentifier(), path, data);
+            mutableTree.write(path, data);
+            // FIXME: Add checked exception
+        } catch (Exception e) {
+            LOG.error("Tx: {}, failed to write {}:{} in {}", getIdentifier(), path, data, mutableTree, e);
+            // Rethrow original ones if they are subclasses of RuntimeException
+            // or Error
+            Throwables.propagateIfPossible(e);
+            // FIXME: Introduce proper checked exception
+            throw new IllegalArgumentException("Illegal input data.", e);
+        }
+    }
+
+    @Override
+    public void merge(final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
+        checkNotReady();
+        try {
+            LOG.debug("Tx: {} Merge: {}:{}", getIdentifier(), path, data);
+            mutableTree.merge(path, data);
+            // FIXME: Add checked exception
+        } catch (Exception e) {
+            LOG.error("Tx: {}, failed to write {}:{} in {}", getIdentifier(), path, data, mutableTree, e);
+            // Rethrow original ones if they are subclasses of RuntimeException
+            // or Error
+            Throwables.propagateIfPossible(e);
+            // FIXME: Introduce proper checked exception
+            throw new IllegalArgumentException("Illegal input data.", e);
+        }
+    }
+
+    @Override
+    public void delete(final InstanceIdentifier path) {
+        checkNotReady();
+        try {
+            LOG.debug("Tx: {} Delete: {}", getIdentifier(), path);
+            mutableTree.delete(path);
+            // FIXME: Add checked exception
+        } catch (Exception e) {
+            LOG.error("Tx: {}, failed to delete {} in {}", getIdentifier(), path, mutableTree, e);
+            // Rethrow original ones if they are subclasses of RuntimeException
+            // or Error
+            Throwables.propagateIfPossible(e);
+            // FIXME: Introduce proper checked exception
+            throw new IllegalArgumentException("Illegal path to delete.", e);
+        }
+    }
+
+    protected final boolean isReady() {
+        return ready;
+    }
+
+    protected final void checkNotReady() {
+        checkState(!ready, "Transaction %s is ready. No further modifications allowed.", getIdentifier());
+    }
+
+    @Override
+    public synchronized DOMStoreThreePhaseCommitCohort ready() {
+        checkState(!ready, "Transaction %s is already ready.", getIdentifier());
+        ready = true;
+        LOG.debug("Store transaction: {} : Ready", getIdentifier());
+        mutableTree.ready();
+        return readyImpl.ready(this);
+    }
+
+    protected DataTreeModification getMutatedView() {
+        return mutableTree;
+    }
+
+    @Override
+    protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
+        return toStringHelper.add("ready", isReady());
+    }
+
+    /**
+     * Prototype implementation of
+     * {@link #ready(org.opendaylight.controller.md.sal.dom.store.impl.SnapshotBackedWriteTransaction)}
+     *
+     * This class is intended to be implemented by Transaction factories
+     * responsible for allocation of {@link org.opendaylight.controller.md.sal.dom.store.impl.SnapshotBackedWriteTransaction} and
+     * providing underlying logic for applying implementation.
+     *
+     */
+    public static interface TransactionReadyPrototype {
+
+        /**
+         * Returns a commit coordinator associated with supplied transactions.
+         *
+         * This call must not fail.
+         *
+         * @param tx
+         *            Transaction on which ready was invoked.
+         * @return DOMStoreThreePhaseCommitCohort associated with transaction
+         */
+        DOMStoreThreePhaseCommitCohort ready(SnapshotBackedWriteTransaction tx);
+    }
+}
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