1 files changed, 147 insertions, 0 deletions
diff --git a/v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/WriteTransaction.java b/v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/WriteTransaction.java
new file mode 100644
index 000000000..fbeba7e07
--- /dev/null
+++ b/v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/WriteTransaction.java
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed 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 io.fd.honeycomb.v3po.data.impl;
+
+import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.CANCELED;
+import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.COMMITED;
+import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.FAILED;
+import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.NEW;
+import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.SUBMITED;
+
+import com.google.common.base.Preconditions;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import io.fd.honeycomb.v3po.data.ModifiableDataTree;
+import io.fd.honeycomb.v3po.data.DataTreeSnapshot;
+import io.fd.honeycomb.v3po.translate.TranslationException;
+import javax.annotation.Nonnull;
+import javax.annotation.concurrent.NotThreadSafe;
+import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
+import org.opendaylight.yangtools.yang.common.RpcResult;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@NotThreadSafe
+final class WriteTransaction implements DOMDataWriteTransaction {
+
+    private static final Logger LOG = LoggerFactory.getLogger(WriteTransaction.class);
+    private final ModifiableDataTree configDataTree;
+    private DataTreeModification modification;
+    private TransactionStatus status;
+
+    WriteTransaction(@Nonnull final ModifiableDataTree configDataTree,
+                     @Nonnull final DataTreeSnapshot configSnapshot) {
+        this.configDataTree = Preconditions.checkNotNull(configDataTree, "configDataTree should not be null");
+        Preconditions.checkNotNull(configSnapshot, "configSnapshot should not be null");
+        // initialize transaction state:
+        modification = configSnapshot.newModification();
+        status = NEW;
+    }
+
+    WriteTransaction(@Nonnull final ModifiableDataTree configDataTree) {
+        this(configDataTree, configDataTree.takeSnapshot());
+    }
+
+    private static void checkConfigurationWrite(final LogicalDatastoreType store) {
+        Preconditions.checkArgument(LogicalDatastoreType.CONFIGURATION == store, "Write is not supported for operational data store");
+    }
+
+    private void checkIsNew() {
+        Preconditions.checkState(status == NEW, "Transaction was submitted or canceled");
+        Preconditions.checkState(modification != null, "DataTree modification should not be null");
+    }
+
+    @Override
+    public void put(final LogicalDatastoreType store, final YangInstanceIdentifier path,
+                    final NormalizedNode<?, ?> data) {
+        LOG.debug("WriteTransaction.put() store={}, path={}, data={}", store, path, data);
+        checkIsNew();
+        checkConfigurationWrite(store);
+        modification.write(path, data);
+    }
+
+    @Override
+    public void merge(final LogicalDatastoreType store, final YangInstanceIdentifier path,
+                      final NormalizedNode<?, ?> data) {
+        LOG.debug("WriteTransaction.merge() store={}, path={}, data={}", store, path, data);
+        checkIsNew();
+        checkConfigurationWrite(store);
+        modification.merge(path, data);
+    }
+
+    @Override
+    public boolean cancel() {
+        if (status != NEW) {
+            // only NEW transactions can be cancelled
+            return false;
+        } else {
+            status = CANCELED;
+            modification = null;
+            return true;
+        }
+    }
+
+    @Override
+    public void delete(LogicalDatastoreType store, final YangInstanceIdentifier path) {
+        LOG.debug("WriteTransaction.delete() store={}, path={}", store, path);
+        checkIsNew();
+        checkConfigurationWrite(store);
+        modification.delete(path);
+    }
+
+    @Override
+    public CheckedFuture<Void, TransactionCommitFailedException> submit() {
+        LOG.debug("WriteTransaction.submit()");
+        checkIsNew();
+
+        // seal transaction:
+        modification.ready();
+        status = SUBMITED;
+
+        try {
+            configDataTree.modify(modification);
+            status = COMMITED;
+        } catch (DataValidationFailedException | TranslationException e) {
+            status = FAILED;
+            LOG.error("Failed modify data tree", e);
+            return Futures.immediateFailedCheckedFuture(
+                    new TransactionCommitFailedException("Failed to validate DataTreeModification", e));
+        } finally {
+            modification = null;
+        }
+        return Futures.immediateCheckedFuture(null);
+    }
+
+    @Override
+    @Deprecated
+    public ListenableFuture<RpcResult<TransactionStatus>> commit() {
+        throw new UnsupportedOperationException("deprecated");
+    }
+
+    @Override
+    public Object getIdentifier() {
+        return this;
+    }
+}