1 files changed, 105 insertions, 0 deletions
diff --git a/runtime-acm/src/main/java/org/onap/policy/clamp/acm/runtime/supervision/SupervisionAspect.java b/runtime-acm/src/main/java/org/onap/policy/clamp/acm/runtime/supervision/SupervisionAspect.java
new file mode 100644
index 000000000..ea851da81
--- /dev/null
+++ b/runtime-acm/src/main/java/org/onap/policy/clamp/acm/runtime/supervision/SupervisionAspect.java
@@ -0,0 +1,105 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.acm.runtime.supervision;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import lombok.RequiredArgsConstructor;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.aspectj.lang.annotation.After;
+import org.aspectj.lang.annotation.AfterReturning;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegister;
+import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatus;
+import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantUpdateAck;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+@Aspect
+@Component
+@RequiredArgsConstructor
+public class SupervisionAspect implements Closeable {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(SupervisionAspect.class);
+
+    private final SupervisionScanner supervisionScanner;
+
+    private ThreadPoolExecutor executor =
+            new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>());
+
+    @Scheduled(
+            fixedRateString = "${runtime.participantParameters.heartBeatMs}",
+            initialDelayString = "${runtime.participantParameters.heartBeatMs}")
+    public void schedule() {
+        LOGGER.info("Add scheduled scanning");
+        executor.execute(() -> supervisionScanner.run(true));
+    }
+
+    /**
+     * Intercept Messages from participant and run Supervision Scan.
+     */
+    @After("@annotation(MessageIntercept)")
+    public void doCheck() {
+        if (executor.getQueue().size() < 2) {
+            LOGGER.debug("Add scanning Message");
+            executor.execute(() -> supervisionScanner.run(false));
+        }
+    }
+
+    @Before("@annotation(MessageIntercept) && args(participantStatusMessage,..)")
+    public void handleParticipantStatus(ParticipantStatus participantStatusMessage) {
+        executor.execute(() -> supervisionScanner.handleParticipantStatus(participantStatusMessage.getParticipantId()));
+    }
+
+    /**
+     * Intercepts participant Register Message
+     * if there is a Commissioning starts an execution of handleParticipantRegister.
+     *
+     * @param participantRegisterMessage the ParticipantRegister message
+     * @param isCommissioning is Commissioning
+     */
+    @AfterReturning(
+            value = "@annotation(MessageIntercept) && args(participantRegisterMessage,..)",
+            returning = "isCommissioning")
+    public void handleParticipantRegister(ParticipantRegister participantRegisterMessage, boolean isCommissioning) {
+        if (isCommissioning) {
+            executor.execute(() -> supervisionScanner.handleParticipantRegister(new ImmutablePair<>(
+                    participantRegisterMessage.getParticipantId(), participantRegisterMessage.getParticipantType())));
+        }
+    }
+
+    @Before("@annotation(MessageIntercept) && args(participantUpdateAckMessage,..)")
+    public void handleParticipantUpdateAck(ParticipantUpdateAck participantUpdateAckMessage) {
+        executor.execute(() -> supervisionScanner.handleParticipantUpdateAck(new ImmutablePair<>(
+                participantUpdateAckMessage.getParticipantId(), participantUpdateAckMessage.getParticipantType())));
+    }
+
+    @Override
+    public void close() throws IOException {
+        executor.shutdown();
+    }
+}