Enable operation in a multi-instance ONOS cluster.
Shared state has been moved to ONOS consistent maps to ensure it
is available throughout the cluster.
Event handling work (e.g. port up, etc) is partitioned between nodes
in the cluster using consistent hashing based on device ID.
Subscriber provisioning requests can be handled by any instance
(the instance that receives the request handles it).
Change-Id: I65cf24a7a7fe4397e1559e5d1c770449979f2566
diff --git a/app/src/test/java/org/opencord/olt/impl/ConsistentHasherTest.java b/app/src/test/java/org/opencord/olt/impl/ConsistentHasherTest.java
new file mode 100644
index 0000000..1f682cb
--- /dev/null
+++ b/app/src/test/java/org/opencord/olt/impl/ConsistentHasherTest.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2020-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.opencord.olt.impl;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.net.DeviceId;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+
+public class ConsistentHasherTest {
+
+ private static final int WEIGHT = 10;
+
+ private static final NodeId N1 = new NodeId("10.0.0.1");
+ private static final NodeId N2 = new NodeId("10.0.0.2");
+ private static final NodeId N3 = new NodeId("10.0.0.3");
+
+ private ConsistentHasher hasher;
+
+ @Before
+ public void setUp() {
+ List<NodeId> servers = new ArrayList<>();
+ servers.add(N1);
+ servers.add(N2);
+
+ hasher = new ConsistentHasher(servers, WEIGHT);
+ }
+
+ @Test
+ public void testHasher() {
+ DeviceId deviceId = DeviceId.deviceId("foo");
+ NodeId server = hasher.hash(deviceId.toString());
+
+ assertThat(server, equalTo(N1));
+
+ deviceId = DeviceId.deviceId("bsaf");
+ server = hasher.hash(deviceId.toString());
+
+ assertThat(server, equalTo(N2));
+ }
+
+ @Test
+ public void testAddServer() {
+ DeviceId deviceId = DeviceId.deviceId("foo");
+ NodeId server = hasher.hash(deviceId.toString());
+
+ assertThat(server, equalTo(N1));
+
+ hasher.addServer(N3);
+
+ server = hasher.hash(deviceId.toString());
+
+ assertThat(server, equalTo(N3));
+ }
+}