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authorherbert <herbert.eiselt@highstreet-technologies.com>2020-01-30 10:39:37 +0100
committerherbert <herbert.eiselt@highstreet-technologies.com>2020-02-01 13:30:27 +0100
commitcbbc3520048bbc539b137cac011776506b3e0f70 (patch)
tree8b72e076b091001e88286a59e5b79479a9194560 /sdnr/wt/netconfnode-state-service/model/src/main/java
parent84cf604e3f06942a62ae0478327ec6100787761e (diff)
SDN-R add updated app
add updated netconfnode-state-service Issue-ID: SDNC-1033 Signed-off-by: herbert <herbert.eiselt@highstreet-technologies.com> Change-Id: If1639bb61dc58e90b769c0dd100d49eeddf83fc9 Signed-off-by: herbert <herbert.eiselt@highstreet-technologies.com>
Diffstat (limited to 'sdnr/wt/netconfnode-state-service/model/src/main/java')
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/Capabilities.java226
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfAccessor.java87
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeConnectListener.java54
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateListener.java53
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateService.java48
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/TransactionUtils.java62
-rw-r--r--sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/VesNotificationListener.java45
7 files changed, 575 insertions, 0 deletions
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/Capabilities.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/Capabilities.java
new file mode 100644
index 000000000..ba80d305f
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/Capabilities.java
@@ -0,0 +1,226 @@
+/*******************************************************************************
+ * ============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==========================================================================
+ ******************************************************************************/
+/**
+ * Convert capabilities of netconfnode into internal format. Boron and Carbon are providing
+ * different versions
+ */
+package org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.List;
+import java.util.Optional;
+import javax.annotation.Nullable;
+import org.eclipse.jdt.annotation.NonNull;
+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.netconf.node.connection.status.AvailableCapabilities;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.UnavailableCapabilities;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Wrapper class for capabilites for Boron and later releases. Uses generics because yang model was
+ * changed from Boron to later version. Interface class:
+ * org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.available.capabilities.AvailableCapability
+ */
+public class Capabilities {
+
+ private static final Logger LOG = LoggerFactory.getLogger(Capabilities.class);
+
+ private static final String METHODNAME = "getCapability";
+ private final List<String> capabilities = new ArrayList<>();
+ private final DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
+
+ private Capabilities() {}
+
+ @SuppressWarnings("null")
+ public static Capabilities getAvailableCapabilities(@Nullable NetconfNode nnode) {
+ LOG.info("GetAvailableCapabilities for node");
+ Capabilities capabilities = new Capabilities();
+ if (nnode != null) {
+ AvailableCapabilities availableCapabilites = nnode.getAvailableCapabilities();
+ if (availableCapabilites != null) {
+ capabilities.constructor(availableCapabilites.getAvailableCapability());
+ } else {
+ LOG.debug("empty capabilites");
+ }
+ } else {
+ LOG.debug("No node provided");
+ }
+ return capabilities;
+ }
+
+ @SuppressWarnings("null")
+ public static Capabilities getUnavailableCapabilities(NetconfNode nnode) {
+ LOG.info("GetAvailableCapabilities for node");
+ Capabilities capabilities = new Capabilities();
+ if (nnode != null) {
+ UnavailableCapabilities availableCapabilites = nnode.getUnavailableCapabilities();
+ if (availableCapabilites != null) {
+ capabilities.constructor(availableCapabilites.getUnavailableCapability());
+ } else {
+ LOG.debug("empty capabilites");
+ }
+ } else {
+ LOG.debug("No node provided");
+ }
+ return capabilities;
+ }
+
+
+ /**
+ * Does all construction steps
+ *
+ * @param pcapabilities with a list of capabilities. <br>
+ * Type could be <br>
+ * - Boron: List<code><String></code> <br>
+ * - Carbon: List<AvailableCapability>
+ */
+ private void constructor(List<@NonNull ?> pcapabilities) {
+ if (pcapabilities != null) {
+ Method methodGetCapability;
+
+ for (Object capability : pcapabilities) {
+ if (capability instanceof String) { // ODL Boron specific
+ this.capabilities.add((String) capability);
+ } else { // Carbon specific part .. handled via generics
+ try {
+ methodGetCapability = capability.getClass().getDeclaredMethod(METHODNAME);
+ methodGetCapability.setAccessible(true);
+ this.capabilities.add(methodGetCapability.invoke(capability).toString());
+ } catch (NoSuchMethodException | SecurityException | IllegalAccessException
+ | IllegalArgumentException | InvocationTargetException e) {
+ LOG.warn("Capability class with missing interface method {}: {} {} {}", METHODNAME,
+ e.getMessage(), capability.getClass(),
+ Arrays.toString(capability.getClass().getInterfaces()));
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Get Capabilites
+ * @return List<String> with capabilites
+ */
+ public List<String> getCapabilities() {
+ return capabilities;
+ }
+
+ /**
+ * Verify if the namespace is supported
+ * @param qCapability from model
+ * @return true if namespace is supported
+ */
+ public boolean isSupportingNamespace(QName qCapability) {
+
+ String namespace = qCapability.getNamespace().toString();
+
+ return isSupportingNamespaceAndRevision(namespace, null);
+
+ }
+
+ /**
+ * check if the namespace and its revision are supported by the given capabilities
+ *
+ * @param qCapability capability from the model
+ * @return true if supporting the model AND revision<br>
+ * false if revision not available or both not found.
+ */
+ public boolean isSupportingNamespaceAndRevision(QName qCapability) {
+
+ String namespace = qCapability.getNamespace().toString();
+ String revision = getRevisionString(qCapability);
+ return revision == null ? false : isSupportingNamespaceAndRevision(namespace, revision);
+ }
+
+ /**
+ *
+ * @param namespace requested
+ * @param revision request or null for any revision
+ * @return true if existing
+ */
+ private boolean isSupportingNamespaceAndRevision(String namespace, @Nullable String revision) {
+ LOG.trace("isSupportingNamespaceAndRevision: Model namespace {}?[revision {}]", namespace, revision);
+ for (String capability : capabilities) {
+ if (capability.contains(namespace) && (revision == null || capability.contains(revision))) {
+ LOG.trace("Verify true with: {}", capability);
+ return true;
+ } else {
+ LOG.trace("Verify false with: {}", capability);
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Provide revision as String from QName, considering older formats.
+ * @param qCapability that specifies the revision
+ * @return String with revisiondate or null
+ */
+ private String getRevisionString(QName qCapability) {
+ Object revisionObject = qCapability.getRevision();
+ String revision = null;
+ if (revisionObject instanceof Optional) {
+ if (((Optional<?>) revisionObject).isPresent()) {
+ revisionObject = ((Optional<?>) revisionObject).get();
+ LOG.info("Unwrapp Optional: {}", revisionObject != null ? revisionObject.getClass() : null);
+ }
+ }
+ if (revisionObject == null) {
+ // Cover null case
+ } else if (revisionObject instanceof String) {
+ revision = (String) revisionObject;
+ } else if (revisionObject instanceof Date) {
+ revision = formatter.format((Date) revisionObject);
+ } else {
+ revision = revisionObject.toString();
+ LOG.debug("Revision number type not supported. Use toString().String:{} Class:{} ", revisionObject,
+ revisionObject.getClass().getName());
+ }
+ return revision;
+ }
+
+ /**
+ * Get revision of first entry of related capability
+ * @param qCapability that specifies the namespace
+ * @return String with date or
+ */
+ public String getRevisionForNamespace(QName qCapability) {
+ String namespace = qCapability.getNamespace().toString();
+ for (String capability : capabilities) {
+ if (capability.contains(namespace)) {
+ return QName.create(capability).getRevision().get().toString();
+ }
+ }
+ return "Unsupported";
+ }
+
+
+ @Override
+ public String toString() {
+ return "Capabilities [capabilities=" + capabilities + "]";
+ }
+
+}
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfAccessor.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfAccessor.java
new file mode 100644
index 000000000..3ca851184
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfAccessor.java
@@ -0,0 +1,87 @@
+/*******************************************************************************
+ * ============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.netconfnodestateservice;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.mdsal.binding.api.DataBroker;
+import org.opendaylight.mdsal.binding.api.MountPoint;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.CreateSubscriptionOutput;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.NotificationListener;
+import org.opendaylight.yangtools.yang.common.RpcResult;
+
+/**
+ * Interface handling netconf connection.
+ */
+public interface NetconfAccessor {
+
+ static String DefaultNotificationsStream = "NETCONF";
+
+ /**
+ * @return the nodeId
+ */
+ NodeId getNodeId();
+
+ /**
+ * @return NetconfNode of this connection
+ */
+ NetconfNode getNetconfNode();
+
+ /**
+ * @return Capabilites
+ */
+ Capabilities getCapabilites();
+
+ /**
+ * @return the dataBroker
+ */
+ DataBroker getDataBroker();
+
+ /**
+ * @return the MDSAL Mountpoint service
+ **/
+ MountPoint getMountpoint();
+
+ /**
+ * @Return TransAction
+ */
+ TransactionUtils getTransactionUtils();
+
+
+ /**
+ * Register netconf notification listener for related mountpoint
+ *
+ * @param <T> specific child class of NotificationListener
+ * @param listener listener to be called
+ * @return handler to manager registration
+ */
+ <T extends NotificationListener> ListenerRegistration<NotificationListener> doRegisterNotificationListener(
+ @NonNull T listener);
+
+ /**
+ * Register notifications stream for the connection.
+ * @param streamName that should be "NETCONF" as default.
+ * @return progress indication
+ */
+ ListenableFuture<RpcResult<CreateSubscriptionOutput>> registerNotificationsStream(String streamName);
+
+
+}
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeConnectListener.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeConnectListener.java
new file mode 100644
index 000000000..cebed4c8a
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeConnectListener.java
@@ -0,0 +1,54 @@
+/*******************************************************************************
+ * ============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.netconfnodestateservice;
+
+import java.util.EventListener;
+import java.util.Optional;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+
+/**
+ * Indicate if device is connected or not.
+ * A NetconfNode (Mountpoint) is providing the status.
+ * If this is Master and connected, this function is calles.
+ */
+
+public interface NetconfNodeConnectListener extends EventListener, AutoCloseable {
+
+ /**
+ * Called if device state changes to "connected" for a netconf master node.
+ * @param acessor containing <br>
+ * - nNodeId name of mount point<br>
+ * - netconfNode with related information<br>
+ * - mountPoint of the node<br>
+ * -netconfNodeDataBroker to access connected netconf device
+ */
+ public void onEnterConnected(@NonNull NetconfAccessor acessor );
+ /**
+ * Notify of device state change to "not connected" mount point supervision for
+ * master mountpoint HINT: This callback could be called multiple times also the
+ * onEnterConnected state was not called.
+ *
+ * @param nNodeId name of mount point
+ * @param optionalNetconfNode with new status or if removed not present
+ */
+ public void onLeaveConnected(@NonNull NodeId nNodeId, @NonNull Optional<NetconfNode> optionalNetconfNode);
+
+}
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateListener.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateListener.java
new file mode 100644
index 000000000..253af0598
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateListener.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.netconfnodestateservice;
+
+import java.util.EventListener;
+
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+
+/**
+ * Indicate all state changes of NetconfNode (Mountpoint). Cleans up and
+ * summarizes the
+ */
+public interface NetconfNodeStateListener extends EventListener {
+
+ /**
+ * New NetconfNode has been created
+ * @param nNodeId of Node
+ * @param netconfNode object
+ */
+
+ void onCreated(NodeId nNodeId, NetconfNode netconfNode);
+
+ /**
+ * New NetconfNode has been created
+ * @param nNodeId of node
+ * @param netconfNode object after change
+ */
+ void onStateChange(NodeId nNodeId, NetconfNode netconfNode);
+
+ /**
+ * NetconfNode has been removed
+ * @param nNodeId of related node
+ */
+ void onRemoved(NodeId nNodeId);
+
+}
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateService.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateService.java
new file mode 100644
index 000000000..0105c36e8
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/NetconfNodeStateService.java
@@ -0,0 +1,48 @@
+/*******************************************************************************
+ * ============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.netconfnodestateservice;
+
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.concepts.Registration;
+
+public interface NetconfNodeStateService extends Registration {
+
+ /**
+ * Register for indication that Master NetconNode is entering or leaving Connected state.
+ * @param netconfNodeConnectListener
+ * @return managing object for listener
+ */
+ @NonNull <L extends NetconfNodeConnectListener> ListenerRegistration<L> registerNetconfNodeConnectListener(@NonNull L netconfNodeConnectListener);
+
+ /**
+ * Register for all NetconfNode specific state changes
+ * @param netconfNodeStateListener
+ * @return managing object for listener
+ */
+ @NonNull <L extends NetconfNodeStateListener> ListenerRegistration<L> registerNetconfNodeStateListener(@NonNull L netconfNodeStateListener);
+
+ /**
+ * Register for Ves/DmaaP provided messages
+ * @param netconfNodeStateListener
+ * @return managing object for listener
+ */
+ @NonNull <L extends VesNotificationListener> ListenerRegistration<L> registerVesNotifications(@NonNull L netconfNodeStateListener);
+
+}
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/TransactionUtils.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/TransactionUtils.java
new file mode 100644
index 000000000..da8da5c7f
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/TransactionUtils.java
@@ -0,0 +1,62 @@
+/*******************************************************************************
+ * ============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.netconfnodestateservice;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicReference;
+import org.eclipse.jdt.annotation.Nullable;
+import org.opendaylight.mdsal.binding.api.DataBroker;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * @author herbert
+ *
+ */
+public interface TransactionUtils {
+
+ /**
+ * Deliver the data back or null. Warning
+ *
+ * @param <T> SubType of the DataObject to be handled
+ * @param dataBroker for accessing data
+ * @param dataStoreType to address datastore
+ * @param iid id to access data
+ * @return null or object
+ */
+ @Nullable
+ <T extends DataObject> T readData(DataBroker dataBroker, LogicalDatastoreType dataStoreType,
+ InstanceIdentifier<T> iid);
+
+ /**
+ * Deliver the data back or null
+ *
+ * @param <T> SubType of the DataObject to be handled
+ * @param dataBroker for accessing data
+ * @param dataStoreType to address datastore
+ * @param iid id to access data
+ * @param noErrorIndication (Output) true if data could be read and are available and is not null
+ * @param statusIndicator (Output) String with status indications during the read.
+ * @return null or object
+ */
+ @Nullable
+ <T extends DataObject> T readDataOptionalWithStatus(DataBroker dataBroker, LogicalDatastoreType dataStoreType,
+ InstanceIdentifier<T> iid, AtomicBoolean noErrorIndication, AtomicReference<String> statusIndicator);
+
+} \ No newline at end of file
diff --git a/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/VesNotificationListener.java b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/VesNotificationListener.java
new file mode 100644
index 000000000..e7d2481b8
--- /dev/null
+++ b/sdnr/wt/netconfnode-state-service/model/src/main/java/org/onap/ccsdk/features/sdnr/wt/netconfnodestateservice/VesNotificationListener.java
@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * ============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.netconfnodestateservice;
+
+import java.util.EventListener;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netconfnode.state.rev191011.AttributeChangeNotification;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netconfnode.state.rev191011.FaultNotification;
+
+/**
+ * Indicate if device is connected or not.
+ * A NetconfNode (Mountpoint) is providing the status.
+ * If this is Master and connected, this function is calles.
+ */
+
+public interface VesNotificationListener extends EventListener, AutoCloseable {
+
+ /**
+ * Called in case of fault notification
+ * @param faultNotification to handle
+ */
+ public void onNotification(FaultNotification faultNotification);
+
+ /**
+ * Called in case of attributeChange notification
+ * @param attributeChangeNotification to handle
+ */
+ public void onNotification(AttributeChangeNotification attributeChangeNotification);
+
+}