1 files changed, 70 insertions, 0 deletions
diff --git a/feature-pooling-messages/src/main/java/org/onap/policy/drools/pooling/message/Leader.java b/feature-pooling-messages/src/main/java/org/onap/policy/drools/pooling/message/Leader.java
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--- /dev/null
+++ b/feature-pooling-messages/src/main/java/org/onap/policy/drools/pooling/message/Leader.java
@@ -0,0 +1,70 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2018-2019, 2021 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2024 Nordix 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.pooling.message;
+
+import lombok.NoArgsConstructor;
+import org.onap.policy.drools.pooling.PoolingFeatureException;
+
+/**
+ * Indicates that the "source" of this message is now the "lead" host.
+ */
+@NoArgsConstructor
+public class Leader extends MessageWithAssignments {
+
+    /**
+     * Constructor.
+     *
+     * @param source host on which the message originated
+     * @param assignments assignments
+     */
+    public Leader(String source, BucketAssignments assignments) {
+        super(source, assignments);
+    }
+
+    /**
+     * Also verifies that buckets have been assigned and that the source is
+     * indeed the leader.
+     */
+    @Override
+    public void checkValidity() throws PoolingFeatureException {
+
+        super.checkValidity();
+
+        BucketAssignments assignments = getAssignments();
+        if (assignments == null) {
+            throw new PoolingFeatureException("missing message bucket assignments");
+        }
+
+        String leader = getSource();
+
+        if (!assignments.hasAssignment(leader)) {
+            throw new PoolingFeatureException("leader " + leader + " has no bucket assignments");
+        }
+
+        for (String host : assignments.getHostArray()) {
+            if (host.compareTo(leader) < 0) {
+                throw new PoolingFeatureException("invalid leader " + leader + ", should be " + host);
+            }
+        }
+    }
+
+}