Add distributed lock primitive
Change-Id: I60f4581d5acb5fc9b9a21d4191874bb56348af58
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixDistributedLockOperations.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixDistributedLockOperations.java
new file mode 100644
index 0000000..5cfbc84
--- /dev/null
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixDistributedLockOperations.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.primitives.resources.impl;
+
+import io.atomix.protocols.raft.operation.OperationId;
+import io.atomix.protocols.raft.operation.OperationType;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.store.serializers.KryoNamespaces;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+/**
+ * {@link org.onosproject.store.service.DistributedLock} operations.
+ * <p>
+ * WARNING: Do not refactor enum values. Only add to them.
+ * Changing values risk breaking the ability to backup/restore/upgrade clusters.
+ */
+public enum AtomixDistributedLockOperations implements OperationId {
+ LOCK(OperationType.COMMAND),
+ UNLOCK(OperationType.COMMAND);
+
+ private final OperationType type;
+
+ AtomixDistributedLockOperations(OperationType type) {
+ this.type = type;
+ }
+
+ @Override
+ public String id() {
+ return name();
+ }
+
+ @Override
+ public OperationType type() {
+ return type;
+ }
+
+ public static final KryoNamespace NAMESPACE = KryoNamespace.newBuilder()
+ .register(KryoNamespaces.BASIC)
+ .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID)
+ .register(Lock.class)
+ .register(Unlock.class)
+ .build(AtomixDistributedLockOperations.class.getSimpleName());
+
+ /**
+ * Abstract lock operation.
+ */
+ public abstract static class LockOperation {
+ @Override
+ public String toString() {
+ return toStringHelper(this).toString();
+ }
+ }
+
+ /**
+ * Lock command.
+ */
+ public static class Lock extends LockOperation {
+ private final int id;
+ private final long timeout;
+
+ public Lock() {
+ this(0, 0);
+ }
+
+ public Lock(int id, long timeout) {
+ this.id = id;
+ this.timeout = timeout;
+ }
+
+ /**
+ * Returns the lock identifier.
+ *
+ * @return the lock identifier
+ */
+ public int id() {
+ return id;
+ }
+
+ /**
+ * Returns the lock attempt timeout.
+ *
+ * @return the lock attempt timeout
+ */
+ public long timeout() {
+ return timeout;
+ }
+
+ @Override
+ public String toString() {
+ return toStringHelper(this)
+ .add("id", id)
+ .add("timeout", timeout)
+ .toString();
+ }
+ }
+
+ /**
+ * Unlock command.
+ */
+ public static class Unlock extends LockOperation {
+ private final int id;
+
+ public Unlock(int id) {
+ this.id = id;
+ }
+
+ /**
+ * Returns the lock identifier.
+ *
+ * @return the lock identifier
+ */
+ public int id() {
+ return id;
+ }
+
+ @Override
+ public String toString() {
+ return toStringHelper(this)
+ .add("id", id)
+ .toString();
+ }
+ }
+}
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