HONEYCOMB-61: Add BA broker for context data tree

With broker, context data can be accessed in a transactional
manner, same as config data

+ Renamed data-api concepts to not include DataTree
+ Renamed context related concepts to better distinguish between them
+ Now passing full ReadContext to read customizers
+ Naming context is backed by context data broker

Change-Id: I0b2876dd74a31a9ced7d9b5145672868e12f8b82
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/TransactionMappingContext.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/TransactionMappingContext.java
new file mode 100644
index 000000000..60f4282f5
--- /dev/null
+++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/TransactionMappingContext.java
@@ -0,0 +1,75 @@
+/*
+ * 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.translate.util.write;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.v3po.translate.MappingContext;
+import javax.annotation.Nonnull;
+import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Binding Transaction backed mapping context
+ */
+public class TransactionMappingContext implements MappingContext {
+
+    private final ReadWriteTransaction readWriteTransaction;
+
+    // TODO make async
+
+    public TransactionMappingContext(final ReadWriteTransaction readWriteTransaction) {
+        this.readWriteTransaction = readWriteTransaction;
+    }
+
+    @Override
+    public <T extends DataObject> Optional<T> read(@Nonnull final InstanceIdentifier<T> currentId) {
+        try {
+            return readWriteTransaction.read(LogicalDatastoreType.OPERATIONAL, currentId).checkedGet();
+        } catch (ReadFailedException e) {
+            throw new IllegalStateException("Unable to perform read", e);
+        }
+    }
+
+    @Override
+    public void delete(final InstanceIdentifier<?> path) {
+        readWriteTransaction.delete(LogicalDatastoreType.OPERATIONAL, path);
+    }
+
+    @Override
+    public <T extends DataObject> void merge(final InstanceIdentifier<T> path, T data) {
+        readWriteTransaction.merge(LogicalDatastoreType.OPERATIONAL, path, data, true);
+    }
+
+    @Override
+    public <T extends DataObject> void put(final InstanceIdentifier<T> path, T data) {
+        readWriteTransaction.put(LogicalDatastoreType.OPERATIONAL, path, data, true);
+    }
+
+    public CheckedFuture<Void, TransactionCommitFailedException> submit() {
+        return readWriteTransaction.submit();
+    }
+
+    @Override
+    public void close() {
+        readWriteTransaction.cancel();
+    }
+}