[ONOS-6497] Add globally unique numeric ID generator primitive
Change-Id: Ic2d9214cfa885344694b8ba4250054dd6a33144e
diff --git a/core/api/src/main/java/org/onosproject/store/service/AtomicIdGenerator.java b/core/api/src/main/java/org/onosproject/store/service/AtomicIdGenerator.java
new file mode 100644
index 0000000..c56093e
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/store/service/AtomicIdGenerator.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017-present 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.service;
+
+/**
+ * Generator for globally unique numeric identifiers.
+ */
+public interface AtomicIdGenerator extends DistributedPrimitive {
+
+ @Override
+ default Type primitiveType() {
+ return Type.ID_GENERATOR;
+ }
+
+ /**
+ * Gets the next globally unique numeric identifier.
+ *
+ * @return the next globally unique numeric identifier
+ */
+ long nextId();
+
+}