add new devicemanager

v2 add disaggregated devicemanager bundled

Issue-ID: SDNC-1007
Signed-off-by: herbert <herbert.eiselt@highstreet-technologies.com>
Change-Id: Ibb65f7f21deade7b3cef62c53b439519a931e301
Signed-off-by: herbert <herbert.eiselt@highstreet-technologies.com>

14 files changed, 665 insertions, 0 deletions

diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DcaeForwarder.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DcaeForwarder.java
new file mode 100644
index 000000000..9dae4f354
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DcaeForwarder.java
@@ -0,0 +1,26 @@
+/*******************************************************************************
+ * ============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;
+
+/**
+ * @author herbert
+ *
+ */
+public interface DcaeForwarder extends DeviceManagerService {
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceManagerService.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceManagerService.java
new file mode 100644
index 000000000..c6dde426a
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceManagerService.java
@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * ============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;
+
+/**
+ * Marker Interface for common devicemanager services
+ */
+public interface DeviceManagerService {
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceManagerServiceProvider.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceManagerServiceProvider.java
new file mode 100644
index 000000000..dbb31ec02
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceManagerServiceProvider.java
@@ -0,0 +1,34 @@
+/*******************************************************************************
+ * ============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;
+
+import org.eclipse.jdt.annotation.NonNull;
+import org.onap.ccsdk.features.sdnr.wt.dataprovider.model.DataProvider;
+
+public interface DeviceManagerServiceProvider {
+
+    /** Generic interface to provide services for smooth migration **/
+    @NonNull <L extends DeviceManagerService> L getService(Class<L> clazz) throws UnkownDevicemanagerServiceException;
+
+    /** Get a dataprovider**/
+    @NonNull DataProvider getDataProvider();
+    //@NonNull WebSocketServiceClient getWebSocketServiceClient();
+    //@NonNull DcaeForwarder getDcaeForwarder();
+    //@NonNull DevicemanagerNotificationDelayService getDevicemanagerNotificationDelayService();
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceMonitoredNe.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceMonitoredNe.java
new file mode 100644
index 000000000..aab90aeab
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/DeviceMonitoredNe.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;
+
+/**
+ * @author herbert
+ *
+ */
+public interface DeviceMonitoredNe extends NetworkElementService {
+
+    /**
+     * Prepare subsequent check calls
+     */
+    public void prepareCheck();
+
+    /**
+     * Test connection to mediator, by getting data that have to be called from NE
+     * @return true if connection working, false if not
+     */
+    public boolean checkIfConnectionToMediatorIsOk();
+
+    /**
+     * Test connection to NE via mediator, by getting data that have to be called from NE
+     * @return true if connection working, false if not
+     */
+    public boolean checkIfConnectionToNeIsOk();
+
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/FactoryRegistration.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/FactoryRegistration.java
new file mode 100644
index 000000000..ed51c8de1
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/FactoryRegistration.java
@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * ============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;
+
+import org.opendaylight.yangtools.concepts.ObjectRegistration;
+
+public interface FactoryRegistration<T> extends ObjectRegistration<T> {
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/InventoryProvider.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/InventoryProvider.java
new file mode 100644
index 000000000..d68037b81
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/InventoryProvider.java
@@ -0,0 +1,33 @@
+/*******************************************************************************
+ * ============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;
+
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.legacy.InventoryInformation;
+
+/**
+ * Provide Inventory information
+ * @author herbert
+ *
+ */
+public interface InventoryProvider extends NetworkElementService {
+
+    public InventoryInformation getInventoryInformation();
+
+    public InventoryInformation getInventoryInformation(String layerProtocolFilter);
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetconfNetworkElementService.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetconfNetworkElementService.java
new file mode 100644
index 000000000..df9d34745
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetconfNetworkElementService.java
@@ -0,0 +1,34 @@
+/*******************************************************************************
+ * ============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;
+
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.concepts.Registration;
+
+public interface NetconfNetworkElementService extends Registration {
+
+    /** Register factory class for network-element handler **/
+    @NonNull <L extends NetworkElementFactory> FactoryRegistration<L> registerNetworkElementFactory(@NonNull L factory);
+
+    /** Get Devicemanager service **/
+    DeviceManagerServiceProvider getServiceProvider();
+
+    /** Write to centrla devicemanager eventlog **/
+    void writeToEventLog(String objectId, String msg, String value);
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElement.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElement.java
new file mode 100644
index 000000000..e0fafb3e0
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElement.java
@@ -0,0 +1,49 @@
+/*******************************************************************************
+ * ============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;
+
+import java.util.Optional;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev190801.NetworkElementDeviceType;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+
+public interface NetworkElement {
+
+    /** Register networkelement at all services **/
+    void register();
+
+    /** Deregister networkelement at all services **/
+    void deregister();
+
+    /** Do a warmstart of the handler e.g.clean up database and refresh alarm status **/
+    void warmstart();
+
+    /** node-id also nodeName, mountpointName. Uuid. **/
+    NodeId getNodeId();
+
+    /** self selected device type **/
+    NetworkElementDeviceType getDeviceType();
+
+    /** Provide optional service interface.
+     * Services:
+     *     InventoryProvider.class
+     *     DeviceMonitoredNe.class
+     **/
+    <L extends NetworkElementService> Optional<L> getService(Class<L> clazz);
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElementFactory.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElementFactory.java
new file mode 100644
index 000000000..3ce932846
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElementFactory.java
@@ -0,0 +1,28 @@
+/*******************************************************************************
+ * ============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;
+
+import java.util.Optional;
+import org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.INetconfAcessor;
+
+public interface NetworkElementFactory {
+
+    Optional<NetworkElement> create(INetconfAcessor acessor, DeviceManagerServiceProvider serviceProvider);
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElementService.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElementService.java
new file mode 100644
index 000000000..eb9db97be
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/NetworkElementService.java
@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * ============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;
+
+/**
+ * Marker interface for service interface of a network element
+ */
+public interface NetworkElementService {
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/UnkownDevicemanagerServiceException.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/UnkownDevicemanagerServiceException.java
new file mode 100644
index 000000000..034b0fc4c
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/UnkownDevicemanagerServiceException.java
@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * ============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;
+
+public class UnkownDevicemanagerServiceException extends Exception {
+
+    private static final long serialVersionUID = 1L;
+
+    public UnkownDevicemanagerServiceException(String string, Class<?> serviceInterface) {
+        super(string+" "+serviceInterface.getName());
+    }
+
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/WebSocketServiceClient.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/WebSocketServiceClient.java
new file mode 100644
index 000000000..480dd04f2
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/WebSocketServiceClient.java
@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * ============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;
+
+/**
+ * Handle status changes and notifications
+ */
+public interface WebSocketServiceClient extends DeviceManagerService {
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/legacy/InventoryInformation.java b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/legacy/InventoryInformation.java
new file mode 100644
index 000000000..a3281f873
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/legacy/InventoryInformation.java
@@ -0,0 +1,130 @@
+/*******************************************************************************
+ * ============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.legacy;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class InventoryInformation {
+
+    private static final String UNKNOWN = "unknown";
+    private static final List<String> EMPTY = new ArrayList<>();
+    private static final InventoryInformation DEFAULT = new InventoryInformation();
+
+    private String type;
+    private String model;
+    private String vendor;
+    private String deviceIpv4;
+    private String deviceIpv6;
+    private List<String> interfaceUuidList;
+
+    public InventoryInformation()
+    {
+        this.type=UNKNOWN;
+        this.model=UNKNOWN;
+        this.vendor=UNKNOWN;
+        this.deviceIpv4=UNKNOWN;
+        this.deviceIpv6=UNKNOWN;
+        this.interfaceUuidList=EMPTY;
+    }
+
+    public InventoryInformation(InventoryInformation inventoryInformation) {
+        this.type=inventoryInformation.type;
+        this.model=inventoryInformation.model;
+        this.vendor=inventoryInformation.vendor;
+        this.deviceIpv4=inventoryInformation.deviceIpv4;
+        this.deviceIpv6=inventoryInformation.deviceIpv6;
+        this.interfaceUuidList=new ArrayList<>(inventoryInformation.interfaceUuidList);
+    }
+
+    public InventoryInformation(
+                String type, String model, String vendor, String deviceIpv4,
+                String deviceIpv6, List<String> interfaceUuidList) {
+        setType(type);
+        setModel(model);
+        setVendor(vendor);
+        setDeviceIpv4(deviceIpv4);
+        setDeviceIpv6(deviceIpv6);
+        setInterfaceUuidList(interfaceUuidList);
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public String getVendor() {
+        return vendor;
+    }
+
+    public String getDeviceIpv4() {
+        return deviceIpv4;
+    }
+
+    public String getDeviceIpv6() {
+        return deviceIpv6;
+    }
+
+    public List<String> getInterfaceUuidList() {
+        return interfaceUuidList;
+    }
+
+    public InventoryInformation setType(String type) {
+        this.type = type != null ? type : UNKNOWN;
+        return this;
+    }
+
+    public InventoryInformation setModel(String model) {
+        this.model = model != null ? model : UNKNOWN;
+        return this;
+    }
+
+    public InventoryInformation setVendor(String vendor) {
+        this.vendor = vendor != null ? vendor : UNKNOWN;
+        return this;
+    }
+
+    public InventoryInformation setDeviceIpv4(String deviceIpv4) {
+        this.deviceIpv4 = deviceIpv4 != null ? deviceIpv4 : UNKNOWN;
+        return this;
+    }
+
+    public InventoryInformation setDeviceIpv6(String deviceIpv6) {
+        this.deviceIpv6 = deviceIpv6 != null ? deviceIpv6 : UNKNOWN ;
+        return this;
+    }
+
+    public InventoryInformation setInterfaceUuidList(List<String> interfaceUuidList) {
+        this.interfaceUuidList = interfaceUuidList != null ? interfaceUuidList : EMPTY;
+        return this;
+    }
+
+    public static InventoryInformation getDefault() {
+        return DEFAULT;
+    }
+
+    @Override
+    public String toString() {
+        return "InventoryInformation [type=" + type + ", model=" + model + ", vendor=" + vendor + ", deviceIpv4="
+                + deviceIpv4 + ", deviceIpv6=" + deviceIpv6 + ", interfaceUuidList=" + interfaceUuidList + "]";
+    }
+
+}
diff --git a/sdnr/wt/devicemanager/model/src/main/yang/devicemanager.yang b/sdnr/wt/devicemanager/model/src/main/yang/devicemanager.yang
new file mode 100644
index 000000000..b1dea1357
--- /dev/null
+++ b/sdnr/wt/devicemanager/model/src/main/yang/devicemanager.yang
@@ -0,0 +1,157 @@
+module devicemanager {
+
+    yang-version 1;
+    namespace "urn:opendaylight:params:xml:ns:yang:devicemanager";
+    prefix "devicemanager";
+
+    import data-provider { prefix "data-provider"; }
+
+    description
+        "DeviceManager Api Module";
+
+    revision "2019-01-09" {
+        description
+            "Initial revision";
+    }
+
+    rpc set-maintenance-mode{
+        description
+            "Set maintenance mode for network element";
+        input{
+            uses data-provider:maintenance-entity;
+        }
+        output {
+            uses data-provider:maintenance-entity;
+        }
+    }
+    rpc get-maintenance-mode{
+        description
+            "Get maintenance mode Configuration";
+        input{
+            leaf mountpoint-name{
+                mandatory true;
+                type string;
+                description
+                    "Mountpoint-name as key of node";
+            }
+        }
+        output {
+            uses data-provider:maintenance-entity;
+        }
+    }
+    rpc test-maintenance-mode{
+        description
+            "Send test pattern similar to notification that are test from algorithm";
+        input{
+            leaf mountpoint-name {
+                mandatory true;
+                type string;
+                description    "mountpoint for test";
+            }
+            leaf object-id-ref {
+                mandatory true;
+                type string;
+                description    "object id for test";
+            }
+            leaf problem-name {
+                mandatory true;
+                type string;
+                description    "problem for test";
+            }
+            leaf test-date {
+                mandatory true;
+                type string;
+                description    "point in time used for the test";
+            }
+
+        }
+        output {
+            leaf result-string {
+                mandatory true;
+                type string;
+                description    "Describin if mountpoint was found and result of maintenance mode testing";
+            }
+            uses data-provider:maintenance-entity;
+        }
+    }
+    rpc show-required-network-element {
+        description
+          "Get information for required network element";
+
+        input {
+            leaf mountpoint-name {
+                mandatory true;
+                type string;
+                description
+                    "Mountpoint-name as key of the node to be displayed.";
+            }
+        }
+        output {
+            container required-network-element {
+                leaf mountpoint-name {
+                    type string;
+                    description
+                       "The name of the mountpoint";
+                }
+                leaf status {
+                    type string;
+                    description
+                        "Status: pre-provisoning, installed, end-of-life (Later enum)";
+                }
+                leaf description {
+                    type string;
+                    description "Device description";
+                }
+            }
+        }
+    }
+
+    rpc get-required-network-element-keys {
+        description
+          "Returns a list of netconf nodes for each data store space";
+
+        output {
+            leaf-list mountpoint-names {
+                type string;
+                description
+                  "List of required-network-element keys that are the mountpoint-names";
+            }
+        }
+    }
+
+    rpc clear-current-fault-by-nodename {
+        description
+            "try to clear alarms and sync the alarm with the devices currently connected";
+        input {
+            leaf-list nodenames {
+                type string;
+                description
+                    "list of network-elements to clear alarms for nodenames, if list empty then all";
+            }
+        }
+        output {
+            leaf-list nodenames {
+                type string;
+                description
+                    "list of network-elements alarms cleared";
+            }
+        }
+    }
+    rpc push-fault-notification {
+        description
+            "Forward fault problem notification of a network-element";
+        input {
+        	uses data-provider:object-change-reference;
+        	uses data-provider:fault;
+        }
+    }
+    rpc push-attribute-change-notification {
+        description
+            "Forward attribute change notification of a network-element";
+        input {
+	    	uses data-provider:object-change-reference;
+    		uses data-provider:attribute-change;
+        }
+    }
+}
+