SDNR WT configure alarm severity

Ability to configure devicemontor alarm severity

Change-Id: Ib57cd6ee6592683e087f90c3ea06384c6d6def03
Issue-ID: SDNC-616
Signed-off-by: Herbert Eiselt <herbert.eiselt@highstreet-technologies.com>

10 files changed, 386 insertions, 86 deletions

diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/internalTypes/InternalSeverity.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/internalTypes/InternalSeverity.java
index 20c3193b1..fcdb5e8ef 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/internalTypes/InternalSeverity.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/internalTypes/InternalSeverity.java
@@ -6,9 +6,9 @@
  * =================================================================================================
  * 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
@@ -21,6 +21,8 @@
  */
 package org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes;
 
+import javax.annotation.Nullable;
+
 public enum InternalSeverity {
 
         NonAlarmed,
@@ -122,4 +124,28 @@ public enum InternalSeverity {
         }
         return null;
     }
+
+    /**
+     * convert a text string into Severity
+     * @param severityString with textes non[-]alarmed, warning minor major critical
+     * @return related enum or null
+     */
+    public static @Nullable InternalSeverity valueOfString(String severityString) {
+
+    	switch( severityString.toLowerCase().trim() ) {
+    	case "non-alarmed":
+    	case "nonalarmed":
+    		return InternalSeverity.NonAlarmed;
+    	case "warning":
+    		return InternalSeverity.Warning;
+    	case "minor":
+    		return InternalSeverity.Minor;
+    	case "major":
+    		return InternalSeverity.Major;
+    	case "critical":
+    		return InternalSeverity.Critical;
+    	}
+    	return null;
+
+    }
 }
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/toggleAlarmFilter/NotificationDelayService.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/toggleAlarmFilter/NotificationDelayService.java
index 47482b248..8ef302afa 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/toggleAlarmFilter/NotificationDelayService.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/base/toggleAlarmFilter/NotificationDelayService.java
@@ -24,7 +24,7 @@ import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.ToggleAlarmConf
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class NotificationDelayService<T> implements AutoCloseable {
+public class NotificationDelayService<T> implements AutoCloseable, IConfigChangedListener {
     private static final Logger LOG = LoggerFactory.getLogger(NotificationDelayService.class);
 
     private final HashMap<String, NotificationDelayFilter<T>> filters;
@@ -42,16 +42,17 @@ public class NotificationDelayService<T> implements AutoCloseable {
 
     public NotificationDelayService(HtDevicemanagerConfiguration htconfig) {
         this.filters = new HashMap<>();
-        htconfig.registerConfigChangedListener(configChangedListener);
+        htconfig.registerConfigChangedListener(this);
         NotificationDelayFilter.setDelay(htconfig.getToggleAlarm().getDelay());
         NotificationDelayFilter.setEnabled(htconfig.getToggleAlarm().isEnabled());
     }
 
-    private final IConfigChangedListener configChangedListener = () -> {
+	@Override
+	public void onConfigChanged() {
         ToggleAlarmConfig cfg = ToggleAlarmConfig.reload();
         NotificationDelayFilter.setDelay(cfg.getDelay());
         NotificationDelayFilter.setEnabled(cfg.isEnabled());
-    };
+	}
 
     @Override
     public void close() throws Exception {
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/HtDevicemanagerConfiguration.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/HtDevicemanagerConfiguration.java
index c07bf4620..1f2dde235 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/HtDevicemanagerConfiguration.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/HtDevicemanagerConfiguration.java
@@ -23,6 +23,7 @@ import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes.IniConfi
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes.IniConfigurationFile.ConfigurationException;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.AaiConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.DcaeConfig;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.DmConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.EsConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.PmConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.ToggleAlarmConfig;
@@ -82,7 +83,7 @@ public class HtDevicemanagerConfiguration {
     public static HtDevicemanagerConfiguration getTestConfiguration() {
         return getTestConfiguration(CONFIGURATIONTESTFILE,false);
     }
-   
+
     public static HtDevicemanagerConfiguration getTestConfiguration(boolean newInstance) {
         return getTestConfiguration(CONFIGURATIONTESTFILE,newInstance);
     }
@@ -136,6 +137,10 @@ public class HtDevicemanagerConfiguration {
         return ToggleAlarmConfig.getTa(mConfig, this.subconfigHandler);
     }
 
+    public DmConfig getDmConfig() {
+    	return DmConfig.getDmConfig(mConfig, this.subconfigHandler);
+    }
+
     public ISubConfigHandler getSubconfigHandler() {
         return subconfigHandler;
     }
@@ -148,5 +153,6 @@ public class HtDevicemanagerConfiguration {
         EsConfig.clear();
         PmConfig.clear();
         ToggleAlarmConfig.clear();
+        DmConfig.clear();
     }
 }
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/impl/DmConfig.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/impl/DmConfig.java
new file mode 100644
index 000000000..c62a8eca6
--- /dev/null
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/config/impl/DmConfig.java
@@ -0,0 +1,132 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * 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.ccsdk.features.sdnr.wt.devicemanager.config.impl;
+
+import java.util.EnumMap;
+import java.util.Map;
+
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes.IniConfigurationFile;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes.IniConfigurationFile.ConfigurationException;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes.InternalSeverity;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.BaseSubConfig;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.ISubConfigHandler;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl.DeviceMonitorProblems;
+
+/**
+ * Configuration of devicemonitor, section [devicemonitor]
+ *   SeverityConnectionlossNeOAM=minor
+ *   SeverityConnectionlossOAM=major
+ *   SeverityConnectionlossMediator=critical
+ */
+public class DmConfig extends BaseSubConfig{
+
+    private static final String SECTION_MARKER_TA = "devicemonitor";
+    private static final String PROPERTY_KEY_PREFIX_Severity = "Severity";
+
+    private static DmConfig dmConfig = null;
+
+    private Map<DeviceMonitorProblems, InternalSeverity> severty = new EnumMap<>(DeviceMonitorProblems.class);
+
+    /*
+     * Constructor
+     */
+    private DmConfig() {
+        super();
+    }
+
+    public DmConfig(IniConfigurationFile config, ISubConfigHandler configHandler) throws ConfigurationException {
+        this(config, configHandler, true);
+    }
+
+    public DmConfig(IniConfigurationFile config, ISubConfigHandler configHandler, boolean save)
+            throws ConfigurationException {
+
+        super(config, configHandler, SECTION_MARKER_TA);
+
+        for (DeviceMonitorProblems problem : DeviceMonitorProblems.values()) {
+        	severty.put(problem, readProperty(problem));
+        }
+
+        if (save) {
+            for (DeviceMonitorProblems problem : DeviceMonitorProblems.values()) {
+            	configSetPropertyp(config, problem, severty.get(problem));
+            }
+            this.save();
+        }
+    }
+
+	public InternalSeverity getSeverity(DeviceMonitorProblems problem) {
+		return severty.get(problem);
+	}
+
+    public static DmConfig getDefaultConfiguration() {
+        DmConfig c = new DmConfig();
+        for (DeviceMonitorProblems problem : DeviceMonitorProblems.values()) {
+        	c.severty.put(problem, InternalSeverity.Major);
+        }
+        return c;
+    }
+    public static boolean isInstantiated() {
+        return dmConfig != null;
+    }
+
+    public static DmConfig getDmConfig(IniConfigurationFile config, ISubConfigHandler configHandler) {
+        if (dmConfig == null) {
+            try {
+                dmConfig = new DmConfig(config, configHandler);
+            } catch (ConfigurationException e) {
+                dmConfig = DmConfig.getDefaultConfiguration();
+            }
+        }
+        return dmConfig;
+    }
+
+    public static DmConfig reload() {
+        if (dmConfig == null) {
+            return null;
+        }
+        DmConfig tmpConfig;
+        try {
+            tmpConfig = new DmConfig(dmConfig.getConfig(), dmConfig.getConfigHandler(), false);
+        } catch (ConfigurationException e) {
+            tmpConfig = DmConfig.getDefaultConfiguration();
+        }
+        dmConfig = tmpConfig;
+        return dmConfig;
+    }
+
+    public static void clear() {
+        dmConfig=null;
+    }
+
+    /*
+     * Private Helper functions
+     */
+    private static String getPropertyName(DeviceMonitorProblems problem) {
+    	return PROPERTY_KEY_PREFIX_Severity+problem.name();
+    }
+
+    private static void configSetPropertyp(IniConfigurationFile config, DeviceMonitorProblems problem, InternalSeverity value) {
+        config.setProperty(SECTION_MARKER_TA + "."+getPropertyName(problem), value.getValueAsString());
+    }
+
+    private InternalSeverity readProperty(DeviceMonitorProblems problem) {
+    	return InternalSeverity.valueOfString(getString(getPropertyName(problem), InternalSeverity.Major.getValueAsString()));
+    }
+
+}
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitor.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitor.java
new file mode 100644
index 000000000..dd5ffd40b
--- /dev/null
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitor.java
@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * 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.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl;
+
+public interface DeviceMonitor extends AutoCloseable {
+
+    /**
+     * Referesh database by raising all alarms again.
+     */
+	void refreshAlarmsInDb();
+
+    /**
+     * removeMountpointIndication deregisters a mountpoint for registration services
+     * @param mountPointNodeName to deregister
+     */
+	void removeMountpointIndication(String mountPointNodeName);
+
+	   /**
+	    * Notify of device state change to "disconnected"
+	    * Mount point supervision
+	    * @param mountPointNodeName to deregister
+	    */
+	void deviceDisconnectIndication(String mountPointNodeName);
+
+    /**
+     * Notify of device state changes to "connected"
+     * @param mountPointNodeName name of mount point
+     * @param ne to monitor
+     */
+	void deviceConnectMasterIndication(String mountPointNodeName, DeviceMonitoredNe ne);
+
+    /**
+     * Notify of device state changes to "connected" for slave nodes
+     * @param mountPointNodeName name of mount point
+     */
+	void deviceConnectSlaveIndication(String mountPointNodeName);
+
+}
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorEmptyImpl.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorEmptyImpl.java
new file mode 100644
index 000000000..ef2af1ae3
--- /dev/null
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorEmptyImpl.java
@@ -0,0 +1,47 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * 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.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl;
+
+public class DeviceMonitorEmptyImpl implements DeviceMonitor {
+
+	@Override
+	public void refreshAlarmsInDb() {
+	}
+
+	@Override
+	public void removeMountpointIndication(String mountPointNodeName) {
+	}
+
+	@Override
+	public void deviceConnectMasterIndication(String mountPointNodeName, DeviceMonitoredNe ne) {
+	}
+
+	@Override
+	public void deviceDisconnectIndication(String mountPointNodeName) {
+	}
+
+	@Override
+	public void deviceConnectSlaveIndication(String mountPointNodeName) {
+	}
+
+	@Override
+	public void close() throws Exception {
+	}
+
+
+}
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorImpl.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorImpl.java
index 89ee376da..fc9fb75c4 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorImpl.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorImpl.java
@@ -25,6 +25,12 @@ import java.util.Enumeration;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
+
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.toggleAlarmFilter.NotificationDelayFilter;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.HtDevicemanagerConfiguration;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.IConfigChangedListener;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.DmConfig;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.ToggleAlarmConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.listener.ODLEventListener;
 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
 import org.slf4j.Logger;
@@ -62,7 +68,7 @@ import org.slf4j.LoggerFactory;
  */
 
 @SuppressWarnings("deprecation")
-public class DeviceMonitorImpl implements AutoCloseable {
+public class DeviceMonitorImpl implements DeviceMonitor, IConfigChangedListener {
 
     private static final Logger LOG = LoggerFactory.getLogger(DeviceMonitorImpl.class);
 
@@ -80,11 +86,16 @@ public class DeviceMonitorImpl implements AutoCloseable {
      * Basic implementation of devicemonitoring
      * @param odlEventListener as destination for problems
      */
-    public DeviceMonitorImpl(DataBroker dataBroker, ODLEventListener odlEventListener) {
+    public DeviceMonitorImpl(DataBroker dataBroker, ODLEventListener odlEventListener, HtDevicemanagerConfiguration htconfig) {
         LOG.info("Construct {}", this.getClass().getSimpleName());
 
         this.odlEventListener = odlEventListener;
         this.dataBroker = dataBroker;
+
+        htconfig.registerConfigChangedListener(this);
+        DmConfig dmConfig = htconfig.getDmConfig();
+        setDmConfig(dmConfig);
+
         this.queue = new ConcurrentHashMap<>();
         this.scheduler = Executors.newScheduledThreadPool(10);
     }
@@ -104,6 +115,18 @@ public class DeviceMonitorImpl implements AutoCloseable {
         scheduler.shutdown();
     }
 
+	@Override
+	public void onConfigChanged() {
+        DmConfig cfg = DmConfig.reload();
+        setDmConfig(cfg);
+	}
+
+	private void setDmConfig(DmConfig dmConfig) {
+        for (DeviceMonitorProblems problem : DeviceMonitorProblems.values()) {
+        	problem.setSeverity(dmConfig.getSeverity(problem));
+        }
+	}
+
     /*-------------------------------------------------------------
      * Start/ stop/ update service for Mountpoint
      */
@@ -160,7 +183,6 @@ public class DeviceMonitorImpl implements AutoCloseable {
             DeviceMonitorTask task = queue.get(mountPointNodeName);
             //Remove from here
             queue.remove(mountPointNodeName);
-
             //Clear all problems
             task.removeMountpointIndication();
             LOG.debug("Task stopped: {}", mountPointNodeName);
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorProblems.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorProblems.java
index 003c2002c..812d4dcf3 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorProblems.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/devicemonitor/impl/DeviceMonitorProblems.java
@@ -6,9 +6,9 @@
  * =================================================================================================
  * 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
@@ -23,7 +23,11 @@
  */
 package org.onap.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl;
 
+import javax.annotation.Nullable;
+
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.base.internalTypes.InternalSeverity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public enum DeviceMonitorProblems {
 
@@ -43,15 +47,23 @@ public enum DeviceMonitorProblems {
      */
     connectionLossNeOAM(InternalSeverity.Major);
 
+    private static final Logger LOG = LoggerFactory.getLogger(DeviceMonitorProblems.class);
     InternalSeverity severity;
 
-    DeviceMonitorProblems(InternalSeverity severity) {
-        this.severity = severity;
+    DeviceMonitorProblems(@Nullable InternalSeverity severity) {
+    	if (severity != null) {
+    		this.severity = severity;
+    	}
     }
 
     InternalSeverity getSeverity() {
         return severity;
     }
 
+	public void setSeverity(InternalSeverity severity) {
+		LOG.info("Change severity for {} from {} to {}", name(), this.severity, severity);
+		this.severity=severity;
+	}
+
 }
 
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/DeviceManagerImpl.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/DeviceManagerImpl.java
index 97595ddac..6a693b735 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/DeviceManagerImpl.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/DeviceManagerImpl.java
@@ -35,6 +35,8 @@ import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.EsConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.GeoConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.config.impl.PmConfig;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.dcaeconnector.impl.DcaeProviderClient;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl.DeviceMonitor;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl.DeviceMonitorEmptyImpl;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl.DeviceMonitorImpl;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.database.service.HtDatabaseEventsService;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.listener.NetconfChangeListener;
@@ -61,6 +63,7 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification.
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.StreamNameType;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.ClusteredConnectionStatus;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.network.topology.topology.topology.types.TopologyNetconf;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
@@ -108,8 +111,8 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
     private @Nullable PerformanceManagerImpl performanceManager = null;
     private ProviderClient dcaeProviderClient;
     private ProviderClient aotsMProvider;
-    private @Nullable AaiProviderClient aaiProviderClient;
-    private DeviceMonitorImpl deviceMonitor;
+    private @Nullable AaiProviderClient aaiProviderClient = null;
+    private @Nullable DeviceMonitor deviceMonitor = new DeviceMonitorEmptyImpl();
     private IndexUpdateService updateService;
     private IndexConfigService configService;
     private IndexMwtnService mwtnService;
@@ -219,9 +222,6 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
                 LOG.warn("No configuration available. Don't start event manager");
             } else {
                 this.databaseClientEvents = new HtDatabaseEventsService(htDatabase);
-                //Make sure to start for one cluster node only
-                if (akkaConfig == null || akkaConfig.isClusterAndFirstNode() || akkaConfig.isSingleNode()) {
-                 }
 
                 String myDbKeyNameExtended = MYDBKEYNAMEBASE + "-" + dbConfig.getCluster();
 
@@ -256,7 +256,7 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
             // DeviceMonitor has to be available before netconfSubscriptionManager is
             // configured
             LOG.debug("start DeviceMonitor Service");
-            this.deviceMonitor = new DeviceMonitorImpl(dataBroker, odlEventListener);
+            this.deviceMonitor = new DeviceMonitorImpl(dataBroker, odlEventListener, config);
 
             // netconfSubscriptionManager should be the last one because this is a callback
             // service
@@ -340,7 +340,7 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
             return;
         }
 
-        if (!isMaster(nNode)) {
+        if (!isNetconfNodeMaster(nNode)) {
             // Change Devicemonitor-status to connected ... for non master mountpoints.
             deviceMonitor.deviceConnectSlaveIndication(mountPointNodeName);
             return;
@@ -398,9 +398,8 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
         ne.initialReadFromNetworkElement();
         ne.initSynchronizationExtension();
 
-        // Setup Service that monitors registration/ deregistration of session
-        ConnectionStatus csts = nNode.getConnectionStatus();
-        sendCreateOrUpdateNotification(mountPointNodeName, action, csts);
+
+        sendUpdateNotification(mountPointNodeName, nNode.getConnectionStatus());
 
         if (aaiProviderClient != null) {
             aaiProviderClient.onDeviceRegistered(mountPointNodeName);
@@ -426,15 +425,14 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
     public void enterNonConnectedState(Action action, NodeId nNodeId, NetconfNode nNode) {
         String mountPointNodeName = nNodeId.getValue();
         ConnectionStatus csts = nNode.getConnectionStatus();
-
-        sendCreateOrUpdateNotification(mountPointNodeName, action, csts);
+        if (isNetconfNodeMaster(nNode)) {
+        	sendUpdateNotification(mountPointNodeName, csts);
+        }
 
         // Handling if mountpoint exist. connected -> connecting/UnableToConnect
         stopListenerOnNodeForConnectedState(mountPointNodeName);
 
-        if (deviceMonitor != null) {
-            deviceMonitor.deviceDisconnectIndication(mountPointNodeName);
-        }
+        deviceMonitor.deviceDisconnectIndication(mountPointNodeName);
 
     }
 
@@ -473,12 +471,10 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
         }
     }
 
-    private void sendCreateOrUpdateNotification(String mountPointNodeName, Action action, ConnectionStatus csts) {
-        LOG.info("enter Non ConnectedState for device :: Name : {} Action {} ConnectionStatus {}", mountPointNodeName, action, csts);
-        if (action == Action.CREATE) {
-            odlEventListener.registration(mountPointNodeName);
-        } else {
-            odlEventListener.updateRegistration(mountPointNodeName, ConnectionStatus.class.getSimpleName(), csts != null ? csts.getName() : "null");
+    private void sendUpdateNotification(String mountPointNodeName, ConnectionStatus csts) {
+        LOG.info("enter Non ConnectedState for device :: Name : {} ConnectionStatus {}", mountPointNodeName, csts);
+        if (odlEventListener != null) {
+        	odlEventListener.updateRegistration(mountPointNodeName, ConnectionStatus.class.getSimpleName(), csts != null ? csts.getName() : "null");
         }
     }
 
@@ -486,32 +482,44 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
      * Handle netconf/mountpoint changes
      */
     @Override
-    public void netconfChangeHandler(Action action, @Nullable ConnectionStatus csts, NodeId nodeId, NetconfNode nnode) {
-        switch (action) {
-            case REMOVE:
-                removeMountpointState(nodeId); // Stop Monitor
-                //deviceManagerService.enterNonConnectedState(nodeId, nnode); // Remove Mountpoint handler
-                break;
-
-            case UPDATE:
-            case CREATE:
-                if (csts != null) {
-                    switch (csts) {
-                        case Connected: {
-                            startListenerOnNodeForConnectedState(action, nodeId, nnode);
-                            break;
-                        }
-                        case UnableToConnect:
-                        case Connecting: {
-                            enterNonConnectedState(action, nodeId, nnode);
-                            break;
-                        }
-                    }
-                } else {
-                    LOG.debug("NETCONF Node handled with null status for action", action);
-                }
-                break;
-        }
+    public void netconfChangeHandler(Action action, @Nullable ConnectionStatus csts, NodeId nodeId, NetconfNode nNode) {
+
+		ClusteredConnectionStatus ccsts = nNode.getClusteredConnectionStatus();
+		String nodeIdString = nodeId.getValue();
+		if (action == Action.CREATE) {
+	        if (odlEventListener != null) {
+	        	odlEventListener.registration(nodeIdString);
+	        }
+		}
+		boolean isCluster = akkaConfig == null && akkaConfig.isCluster();
+		if (isCluster && ccsts == null) {
+			LOG.debug("NETCONF Node {} {} does not provide cluster status. Stop execution.", nodeIdString, action);
+		} else {
+			switch (action) {
+			case REMOVE:
+				removeMountpointState(nodeId); // Stop Monitor
+				break;
+
+			case UPDATE:
+			case CREATE:
+				if (csts != null) {
+					switch (csts) {
+					case Connected: {
+						startListenerOnNodeForConnectedState(action, nodeId, nNode);
+						break;
+					}
+					case UnableToConnect:
+					case Connecting: {
+						enterNonConnectedState(action, nodeId, nNode);
+						break;
+					}
+					}
+				} else {
+					LOG.debug("NETCONF Node handled with null status for action", action);
+				}
+				break;
+			}
+		}
     }
 
     /*-------------------------------------------------------------------------------------------
@@ -590,9 +598,7 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
             }
 
             // Force a sync
-            if (this.deviceMonitor != null) {
-                this.deviceMonitor.refreshAlarmsInDb();
-            }
+            this.deviceMonitor.refreshAlarmsInDb();
 
             threadDoClearCurrentFaultByNodename = new Thread(() -> {
                 refreshCounter++;
@@ -697,17 +703,11 @@ public class DeviceManagerImpl implements DeviceManagerService, AutoCloseable, R
         return this.akkaConfig == null ? "" : this.akkaConfig.getClusterConfig().getClusterSeedNodeName("abc");
     }
 
-    private boolean isMaster(NetconfNode nnode) {
+    private boolean isNetconfNodeMaster(NetconfNode nnode) {
         if (isInClusterMode()) {
             LOG.debug("check if me is responsible for node");
             String masterNodeName = nnode.getClusteredConnectionStatus() == null ? "null"
                     : nnode.getClusteredConnectionStatus().getNetconfMasterNode();
-            /*
-             * List<NodeStatus> clusterNodeStatusList=nnode.getClusteredConnectionStatus()==null?null:nnode.
-             * getClusteredConnectionStatus().getNodeStatus(); if(clusterNodeStatusList!=null) { for(NodeStatus
-             * s: clusterNodeStatusList) LOG.debug("node "+s.getNode()+
-             * " with status "+(s.getStatus()==null?"null":s.getStatus().getName())); }
-             */
             String myNodeName = getClusterNetconfNodeName();
             LOG.debug("sdnMasterNode=" + masterNodeName + " and sdnMyNode=" + myNodeName);
             if (!masterNodeName.equals(myNodeName)) {
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/listener/NetconfChangeListener.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/listener/NetconfChangeListener.java
index a521bb94c..80aac1ac4 100644
--- a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/listener/NetconfChangeListener.java
+++ b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/listener/NetconfChangeListener.java
@@ -29,6 +29,7 @@ import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.ClusteredConnectionStatus;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.network.topology.topology.topology.types.TopologyNetconf;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
@@ -145,24 +146,24 @@ public class NetconfChangeListener implements ClusteredDataTreeChangeListener<No
             }
 
             if (node == null || nnode == null || nodeId == null || nodeKey == null) {
-                LOG.warn("Unexpected node {}, netconf node {} or key {} or id {}", node, nnode, nodeKey, nodeId);
+            	LOG.warn("Unexpected node {}, netconf node {} or key {} or id {}", node, nnode, nodeKey, nodeId);
             } else {
-
-                String nodeIdString = nodeId.getValue();
-                ConnectionStatus csts = nnode.getConnectionStatus();
-                LOG.debug("NETCONF Node processing with id {} action {} status {} cluster status {}", nodeIdString,
-                        action, csts, nnode.getClusteredConnectionStatus());
-
-                // Do not forward any controller related events to devicemanager
-                if (nodeIdString.equals(CONTROLLER)) {
-                    LOG.debug("Stop processing for [{}]", nodeIdString);
-                } else {
-                    // Action forwarded to devicehandler
-                    deviceManagerService.netconfChangeHandler(action, csts, nodeId, nnode);
-                }
+            	String nodeIdString = nodeId.getValue();
+            	// Do not forward any controller related events to devicemanager
+            	if (nodeIdString.equals(CONTROLLER)) {
+            		LOG.debug("Stop processing for [{}]", nodeIdString);
+            	} else {
+
+            		ClusteredConnectionStatus ccsts = nnode.getClusteredConnectionStatus();
+        			ConnectionStatus csts = nnode.getConnectionStatus();
+          			LOG.debug("NETCONF Node processing with id {} action {} status {} cluster status {}", nodeIdString,
+            					action, csts, ccsts);
+          			// Action forwarded to devicehandler
+           			deviceManagerService.netconfChangeHandler(action, csts, nodeId, nnode);
+            	}
             }
         } catch (NullPointerException e) {
-            LOG.warn("Unexpected null .. stop processing.", e);
+        	LOG.warn("Unexpected null .. stop processing.", e);
         }
     }