2 files changed, 90 insertions, 1 deletions

diff --git a/engine-d/src/main/java/org/onap/holmes/engine/manager/DroolsEngine.java b/engine-d/src/main/java/org/onap/holmes/engine/manager/DroolsEngine.java
index 6808e98..78f2677 100644
--- a/engine-d/src/main/java/org/onap/holmes/engine/manager/DroolsEngine.java
+++ b/engine-d/src/main/java/org/onap/holmes/engine/manager/DroolsEngine.java
@@ -33,6 +33,7 @@ import org.kie.api.runtime.rule.FactHandle;
 import org.onap.holmes.common.api.entity.AlarmInfo;
 import org.onap.holmes.common.api.entity.CorrelationRule;
 import org.onap.holmes.common.api.stat.VesAlarm;
+import org.onap.holmes.common.config.MicroServiceConfig;
 import org.onap.holmes.common.dmaap.store.ClosedLoopControlNameCache;
 import org.onap.holmes.common.exception.AlarmInfoException;
 import org.onap.holmes.common.exception.CorrelationException;
@@ -65,6 +66,7 @@ public class DroolsEngine {
     private ReleaseId compilationRelease = ks.newReleaseId("org.onap.holmes", "compilation", "1.0.0-SNAPSHOT");
     private KieContainer container;
     private KieSession session;
+    private String instanceIp;
 
     @Inject
     public void setRuleMgtWrapper(RuleMgtWrapper ruleMgtWrapper) {
@@ -100,6 +102,7 @@ public class DroolsEngine {
             log.error("Failed to startup the engine of Holmes: " + e.getMessage(), e);
             throw ExceptionUtil.buildExceptionResponse("Failed to startup Drools!");
         }
+        instanceIp = MicroServiceConfig.getMicroServiceIpAndPort()[0];
     }
 
     public void stop() {
@@ -123,7 +126,11 @@ public class DroolsEngine {
     }
 
     private void initRules() throws CorrelationException {
-        List<CorrelationRule> rules = ruleMgtWrapper.queryRuleByEnable(ENABLE);
+        List<CorrelationRule> rules = ruleMgtWrapper.queryRuleByEnable(ENABLE)
+                .stream()
+                .filter(r -> r.getEngineInstance().equals(instanceIp))
+                .collect(Collectors.toList());
+
         if (rules.isEmpty()) {
             return;
         }
diff --git a/engine-d/src/main/java/org/onap/holmes/engine/manager/status/EntityStatusRefreshTask.java b/engine-d/src/main/java/org/onap/holmes/engine/manager/status/EntityStatusRefreshTask.java
new file mode 100644
index 0000000..0b15999
--- /dev/null
+++ b/engine-d/src/main/java/org/onap/holmes/engine/manager/status/EntityStatusRefreshTask.java
@@ -0,0 +1,82 @@
+/**
+ * Copyright 2020 ZTE Corporation.
+ * <p>
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.onap.holmes.engine.manager.status;
+
+import org.jvnet.hk2.annotations.Service;
+import org.onap.holmes.common.config.MicroServiceConfig;
+import org.onap.holmes.common.engine.entity.EngineEntity;
+import org.onap.holmes.common.engine.service.EngineEntityService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.annotation.PostConstruct;
+import javax.inject.Inject;
+import java.util.Optional;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+@Service
+public class EntityStatusRefreshTask extends TimerTask {
+    private static final Logger logger = LoggerFactory.getLogger(EntityStatusRefreshTask.class);
+    private final long INTERVAL = SECONDS.toMillis(15);
+    private EngineEntity engineEntity;
+    private Timer timer = new Timer("EntityStatusRefreshTimer", true);
+    private EngineEntityService engineEntityService;
+
+    @Inject
+    public EntityStatusRefreshTask(EngineEntityService engineEntityService) {
+        this.engineEntityService = engineEntityService;
+    }
+
+    @PostConstruct
+    private void initialize() {
+        String[] serviceAddrInfo = MicroServiceConfig.getMicroServiceIpAndPort();
+        if (null != serviceAddrInfo) {
+            String ip = serviceAddrInfo[0];
+            String port = Optional.ofNullable(serviceAddrInfo[1]).orElse("9201");
+            port = port.equals("80") ? "9201" : port;
+            engineEntity = new EngineEntity(ip, Integer.parseInt(port));
+
+            timer.schedule(this, SECONDS.toMillis(1), INTERVAL);
+        } else {
+            logger.warn("Failed to get the address info of current engine. " +
+                    "Problems will be caused when it comes to a multi-instance scenario!");
+        }
+    }
+
+    @Override
+    public void run() {
+        if (engineEntity == null) {
+            logger.warn("No engine entity is specified. The status refresh task will return immediately.");
+            return;
+        }
+
+        engineEntity.setLastModified(System.currentTimeMillis());
+
+        try {
+            if (engineEntityService.getEntity(engineEntity.getId()) == null) {
+                engineEntityService.insertEntity(engineEntity);
+            } else {
+                engineEntityService.updateEntity(engineEntity);
+            }
+        } catch (Exception e) {
+            logger.warn("Failed to update engine instance information.", e);
+        }
+    }
+}