Added distributed transaction support through a two phase commit protocol
Change-Id: I85d64234a24823fee8b3c2ea830abbb6867dad38
diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultTransaction.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultTransaction.java
new file mode 100644
index 0000000..2ff7a2d
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+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultTransaction.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 org.onosproject.store.consistent.impl;
+
+import java.util.List;
+
+import org.onosproject.store.service.DatabaseUpdate;
+import org.onosproject.store.service.Transaction;
+
+import com.google.common.collect.ImmutableList;
+
+/**
+ * A Default transaction implementation.
+ */
+public class DefaultTransaction implements Transaction {
+
+ private final long transactionId;
+ private final List<DatabaseUpdate> updates;
+ private final State state;
+ private final long lastUpdated;
+
+ public DefaultTransaction(long transactionId, List<DatabaseUpdate> updates) {
+ this(transactionId, updates, State.PREPARING, System.currentTimeMillis());
+ }
+
+ private DefaultTransaction(long transactionId, List<DatabaseUpdate> updates, State state, long lastUpdated) {
+ this.transactionId = transactionId;
+ this.updates = ImmutableList.copyOf(updates);
+ this.state = state;
+ this.lastUpdated = lastUpdated;
+ }
+
+ @Override
+ public long id() {
+ return transactionId;
+ }
+
+ @Override
+ public List<DatabaseUpdate> updates() {
+ return updates;
+ }
+
+ @Override
+ public State state() {
+ return state;
+ }
+
+ @Override
+ public Transaction transition(State newState) {
+ return new DefaultTransaction(transactionId, updates, newState, System.currentTimeMillis());
+ }
+
+ @Override
+ public long lastUpdated() {
+ return lastUpdated;
+ }
+}
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