HONEYCOMB-33: Add notification service to Hc

Implement VPP interface notification translator as part
of v3po2vpp plugin

Change-Id: I69cfad9668ae9e4d79ed30bb8d54d294faa4c54a
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

7 files changed, 401 insertions, 0 deletions

diff --git a/v3po/v3po2vpp/pom.xml b/v3po/v3po2vpp/pom.xml
index d02807c9d..edff40b3d 100644
--- a/v3po/v3po2vpp/pom.xml
+++ b/v3po/v3po2vpp/pom.xml
@@ -36,6 +36,11 @@
         </dependency>
         <dependency>
             <groupId>${project.groupId}</groupId>
+            <artifactId>notification-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
             <artifactId>translate-utils</artifactId>
             <version>${project.version}</version>
         </dependency>
diff --git a/v3po/v3po2vpp/src/main/config/default-config.xml b/v3po/v3po2vpp/src/main/config/default-config.xml
index 19226d4fc..1ee177553 100644
--- a/v3po/v3po2vpp/src/main/config/default-config.xml
+++ b/v3po/v3po2vpp/src/main/config/default-config.xml
@@ -26,6 +26,7 @@
         <capability>
             urn:opendaylight:params:xml:ns:yang:controller:threadpool:impl:scheduled?module=threadpool-impl-scheduled&amp;revision=2013-12-01
         </capability>
+        <capability>urn:honeycomb:params:xml:ns:yang:notification:impl?module=notification-impl&amp;revision=2016-06-01</capability>
     </required-capabilities>
     <configuration>
 
@@ -65,6 +66,35 @@
                         <name>global-netconf-ssh-scheduled-executor</name>
                     </keepalive-executor>
                 </module>
+
+                <!-- Interface notification producer-->
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:v3po2vpp">prefix:vpp-interface-notification-producer</type>
+                    <name>vpp-interface-notification-producer</name>
+                    <vpp-jvpp>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:jvpp:cfg">prefix:vpp-jvpp</type>
+                        <name>vpp-jvpp</name>
+                    </vpp-jvpp>
+                    <interface-context>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:util">prefix:naming-context</type>
+                        <name>interface-context</name>
+                    </interface-context>
+                    <realtime-mapping-context>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-mapping-context</type>
+                        <name>realtime-mapping-context</name>
+                    </realtime-mapping-context>
+                </module>
+                <!-- Register to HC notification collector-->
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:notification:impl">prefix:honeycomb-notification-manager</type>
+                    <name>honeycomb-notification-manager</name>
+                    <notification-producers>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:notification:api">prefix:honeycomb-notification-producer</type>
+                        <name>vpp-interface-notification-producer</name>
+                    </notification-producers>
+                </module>
+                <!-- /Interface notification producer -->
+
                 <module>
                     <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:v3po2vpp">prefix:interfaces-state-honeycomb-reader</type>
                     <name>interfaces-state-honeycomb-reader</name>
@@ -157,6 +187,13 @@
                     </instance>
                 </service>
                 <service>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:notification:api">prefix:honeycomb-notification-producer</type>
+                    <instance>
+                        <name>vpp-interface-notification-producer</name>
+                        <provider>/modules/module[type='vpp-interface-notification-producer'][name='vpp-interface-notification-producer']</provider>
+                    </instance>
+                </service>
+                <service>
                     <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:util">prefix:naming-context</type>
                     <instance>
                         <name>interface-context</name>
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/notification/InterfaceChangeNotificationProducer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/notification/InterfaceChangeNotificationProducer.java
new file mode 100644
index 000000000..f3689d7e2
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/notification/InterfaceChangeNotificationProducer.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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.
+ */
+package io.fd.honeycomb.v3po.translate.v3po.notification;
+
+import com.google.common.collect.Lists;
+import io.fd.honeycomb.v3po.notification.ManagedNotificationProducer;
+import io.fd.honeycomb.v3po.notification.NotificationCollector;
+import io.fd.honeycomb.v3po.translate.MappingContext;
+import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
+import io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.concurrent.CompletionStage;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import javax.annotation.concurrent.NotThreadSafe;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceDeleted;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceDeletedBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceNameOrIndex;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceStateChange;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceStateChangeBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceStatus;
+import org.opendaylight.yangtools.yang.binding.Notification;
+import org.openvpp.jvpp.VppBaseCallException;
+import org.openvpp.jvpp.VppInvocationException;
+import org.openvpp.jvpp.dto.SwInterfaceSetFlagsNotification;
+import org.openvpp.jvpp.dto.WantInterfaceEvents;
+import org.openvpp.jvpp.dto.WantInterfaceEventsReply;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Notification producer for interface events. It starts interface notification stream and for every
+ * received notification, it transforms it into its BA equivalent and pushes into HC's notification collector.
+ */
+@NotThreadSafe
+public final class InterfaceChangeNotificationProducer implements ManagedNotificationProducer {
+
+    private static final Logger LOG = LoggerFactory.getLogger(InterfaceChangeNotificationProducer.class);
+
+    private final FutureJVpp jvpp;
+    private final NamingContext interfaceContext;
+    private final MappingContext mappingContext;
+    @Nullable
+    private AutoCloseable notificationListenerReg;
+
+    public InterfaceChangeNotificationProducer(@Nonnull final FutureJVpp jvpp,
+                                               @Nonnull final NamingContext interfaceContext,
+                                               @Nonnull final MappingContext mappingContext) {
+        this.jvpp = jvpp;
+        this.interfaceContext = interfaceContext;
+        this.mappingContext = mappingContext;
+    }
+
+    @Override
+    public void start(final NotificationCollector collector) {
+        LOG.trace("Starting interface notifications");
+        enableDisableIfcNotifications(1);
+        LOG.debug("Interface notifications started successfully");
+        notificationListenerReg = jvpp.getNotificationRegistry().registerSwInterfaceSetFlagsNotificationCallback(
+            swInterfaceSetFlagsNotification -> {
+                LOG.trace("Interface notification received: {}", swInterfaceSetFlagsNotification);
+                collector.onNotification(transformNotification(swInterfaceSetFlagsNotification));
+            }
+        );
+    }
+
+    private Notification transformNotification(final SwInterfaceSetFlagsNotification swInterfaceSetFlagsNotification) {
+        if(swInterfaceSetFlagsNotification.deleted == 1) {
+            return new InterfaceDeletedBuilder().setName(getIfcName(swInterfaceSetFlagsNotification)).build();
+        } else {
+            return new InterfaceStateChangeBuilder()
+                .setName(getIfcName(swInterfaceSetFlagsNotification))
+                .setAdminStatus(swInterfaceSetFlagsNotification.adminUpDown == 1 ? InterfaceStatus.Up : InterfaceStatus.Down)
+                .setOperStatus(swInterfaceSetFlagsNotification.linkUpDown == 1 ? InterfaceStatus.Up : InterfaceStatus.Down)
+                .build();
+        }
+    }
+
+    /**
+     * Get mapped name for the interface. Best effort only! The mapping might not yet be stored in context
+     * data tree (write transaction is still in progress and context changes have not been committed yet, or
+     * VPP sends the notification before it returns create request(that would store mapping)).
+     *
+     * In case mapping is not available, index is used as name. TODO inconsistent behavior, maybe just use indices ?
+     */
+    private InterfaceNameOrIndex getIfcName(final SwInterfaceSetFlagsNotification swInterfaceSetFlagsNotification) {
+        return interfaceContext.containsName(swInterfaceSetFlagsNotification.swIfIndex, mappingContext)
+            ? new InterfaceNameOrIndex(interfaceContext.getName(swInterfaceSetFlagsNotification.swIfIndex, mappingContext))
+            : new InterfaceNameOrIndex((long) swInterfaceSetFlagsNotification.swIfIndex);
+    }
+
+    @Override
+    public void stop() {
+        LOG.trace("Stopping interface notifications");
+        enableDisableIfcNotifications(0);
+        LOG.debug("Interface notifications stopped successfully");
+        try {
+            if (notificationListenerReg != null) {
+                notificationListenerReg.close();
+            }
+        } catch (Exception e) {
+            LOG.warn("Unable to properly close notification registration: {}", notificationListenerReg, e);
+        }
+    }
+
+    private void enableDisableIfcNotifications(int enableDisable) {
+        final WantInterfaceEvents wantInterfaceEvents = new WantInterfaceEvents();
+        wantInterfaceEvents.pid = 1;
+        wantInterfaceEvents.enableDisable = enableDisable;
+        final CompletionStage<WantInterfaceEventsReply> wantInterfaceEventsReplyCompletionStage;
+        try {
+            wantInterfaceEventsReplyCompletionStage = jvpp.wantInterfaceEvents(wantInterfaceEvents);
+            TranslateUtils.getReply(wantInterfaceEventsReplyCompletionStage.toCompletableFuture());
+        } catch (VppBaseCallException e) {
+            LOG.warn("Unable to {} interface notifications", enableDisable == 1 ? "enable" : "disable",  e);
+            throw new IllegalStateException("Unable to control interface notifications", e);
+        }
+
+    }
+
+    @Override
+    public Collection<Class<? extends Notification>> getNotificationTypes() {
+        final ArrayList<Class<? extends Notification>> classes = Lists.newArrayList();
+        classes.add(InterfaceStateChange.class);
+        classes.add(InterfaceDeleted.class);
+        return classes;
+    }
+
+    @Override
+    public void close() throws Exception {
+        LOG.trace("Closing interface notifications producer");
+        stop();
+    }
+}
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppInterfaceNotificationProducerModule.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppInterfaceNotificationProducerModule.java
new file mode 100644
index 000000000..4251fdab2
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppInterfaceNotificationProducerModule.java
@@ -0,0 +1,28 @@
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
+
+import io.fd.honeycomb.v3po.translate.v3po.notification.InterfaceChangeNotificationProducer;
+
+public class VppInterfaceNotificationProducerModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppInterfaceNotificationProducerModule {
+
+    public VppInterfaceNotificationProducerModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
+        super(identifier, dependencyResolver);
+    }
+
+    public VppInterfaceNotificationProducerModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.VppInterfaceNotificationProducerModule oldModule, java.lang.AutoCloseable oldInstance) {
+        super(identifier, dependencyResolver, oldModule, oldInstance);
+    }
+
+    @Override
+    public void customValidation() {
+        // add custom validation form module attributes here.
+    }
+
+    @Override
+    public java.lang.AutoCloseable createInstance() {
+        return new InterfaceChangeNotificationProducer(
+            getVppJvppDependency(),
+            getInterfaceContextDependency(),
+            getRealtimeMappingContextDependency());
+    }
+
+}
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppInterfaceNotificationProducerModuleFactory.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppInterfaceNotificationProducerModuleFactory.java
new file mode 100644
index 000000000..c80a0d364
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppInterfaceNotificationProducerModuleFactory.java
@@ -0,0 +1,13 @@
+/*
+* Generated file
+*
+* Generated from: yang module name: v3po2vpp yang module local name: vpp-interface-notification-producer
+* Generated by: org.opendaylight.controller.config.yangjmxgenerator.plugin.JMXGenerator
+* Generated at: Wed Jun 01 17:12:36 CEST 2016
+*
+* Do not modify this file unless it is present under src/main directory
+*/
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
+public class VppInterfaceNotificationProducerModuleFactory extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppInterfaceNotificationProducerModuleFactory {
+
+}
diff --git a/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang b/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang
index 5ccac8e94..cf89cbd51 100644
--- a/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang
+++ b/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang
@@ -10,6 +10,7 @@ module v3po2vpp {
     import opendaylight-md-sal-binding { prefix md-sal-binding; revision-date 2013-10-28;}
     import vpp-util { prefix vpp-u; revision-date 2016-04-06; }
     import threadpool {prefix th;}
+    import notification-api { prefix hc-notif-a; revision-date 2016-06-01; }
 
     description
         "This module contains reads and writers for v3po yang model";
@@ -68,6 +69,44 @@ module v3po2vpp {
         }
     }
 
+    identity vpp-interface-notification-producer {
+        base config:module-type;
+        config:provided-service hc-notif-a:honeycomb-notification-producer;
+    }
+
+    augment "/config:modules/config:module/config:configuration" {
+        case vpp-interface-notification-producer {
+            when "/config:modules/config:module/config:type = 'vpp-interface-notification-producer'";
+
+            container vpp-jvpp {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity vjvppc:vpp-jvpp;
+                    }
+                }
+            }
+
+            container interface-context {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity vpp-u:naming-context;
+                    }
+                }
+            }
+
+            container realtime-mapping-context {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity tapi:honeycomb-mapping-context;
+                    }
+                }
+            }
+        }
+    }
+
     identity interfaces-state-honeycomb-reader {
         base config:module-type;
         config:provided-service tapi:honeycomb-reader;
diff --git a/v3po/v3po2vpp/src/test/java/io/fd/honeycomb/v3po/translate/v3po/notification/InterfaceChangeNotificationProducerTest.java b/v3po/v3po2vpp/src/test/java/io/fd/honeycomb/v3po/translate/v3po/notification/InterfaceChangeNotificationProducerTest.java
new file mode 100644
index 000000000..dd5a22d61
--- /dev/null
+++ b/v3po/v3po2vpp/src/test/java/io/fd/honeycomb/v3po/translate/v3po/notification/InterfaceChangeNotificationProducerTest.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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.
+ */
+package io.fd.honeycomb.v3po.translate.v3po.notification;
+
+import static io.fd.honeycomb.v3po.translate.v3po.test.ContextTestUtils.getMapping;
+import static io.fd.honeycomb.v3po.translate.v3po.test.ContextTestUtils.getMappingIid;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
+import io.fd.honeycomb.v3po.notification.NotificationCollector;
+import io.fd.honeycomb.v3po.translate.MappingContext;
+import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.naming.context.rev160513.contexts.naming.context.Mappings;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.naming.context.rev160513.contexts.naming.context.MappingsBuilder;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.naming.context.rev160513.contexts.naming.context.mappings.Mapping;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.naming.context.rev160513.contexts.naming.context.mappings.MappingKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceStateChange;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.InterfaceStatus;
+import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
+import org.openvpp.jvpp.callback.SwInterfaceSetFlagsNotificationCallback;
+import org.openvpp.jvpp.dto.SwInterfaceSetFlagsNotification;
+import org.openvpp.jvpp.dto.WantInterfaceEvents;
+import org.openvpp.jvpp.dto.WantInterfaceEventsReply;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.openvpp.jvpp.notification.NotificationRegistry;
+
+public class InterfaceChangeNotificationProducerTest {
+
+    @Mock
+    private FutureJVpp jVpp;
+    private NamingContext namingContext = new NamingContext("test", "test-instance");
+    @Mock
+    private MappingContext mappingContext;
+    @Mock
+    private NotificationCollector collector;
+    @Mock
+    private NotificationRegistry notificationRegistry;
+    @Mock
+    private AutoCloseable notificationListenerReg;
+
+    private ArgumentCaptor<SwInterfaceSetFlagsNotificationCallback> callbackArgumentCaptor;
+
+    @Before
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+        doReturn(notificationRegistry).when(jVpp).getNotificationRegistry();
+        callbackArgumentCaptor = ArgumentCaptor.forClass(SwInterfaceSetFlagsNotificationCallback.class);
+        doReturn(notificationListenerReg).when(notificationRegistry).registerSwInterfaceSetFlagsNotificationCallback(
+            callbackArgumentCaptor.capture());
+
+        final KeyedInstanceIdentifier<Mapping, MappingKey> eth0Id = getMappingIid("eth0", "test-instance");
+        final Optional<Mapping> eth0 = getMapping("eth0", 0);
+
+        final List<Mapping> allMappings = Lists.newArrayList(getMapping("eth0", 0).get());
+        final Mappings allMappingsBaObject = new MappingsBuilder().setMapping(allMappings).build();
+        doReturn(Optional.of(allMappingsBaObject)).when(mappingContext).read(eth0Id.firstIdentifierOf(Mappings.class));
+
+        doReturn(eth0).when(mappingContext).read(eth0Id);
+    }
+
+    @Test
+    public void testStart() throws Exception {
+        final CompletableFuture<WantInterfaceEventsReply> response = new CompletableFuture<>();
+        response.complete(new WantInterfaceEventsReply());
+        doReturn(response).when(jVpp).wantInterfaceEvents(any(WantInterfaceEvents.class));
+        final InterfaceChangeNotificationProducer interfaceChangeNotificationProducer =
+            new InterfaceChangeNotificationProducer(jVpp, namingContext, mappingContext);
+
+        interfaceChangeNotificationProducer.start(collector);
+        verify(jVpp).wantInterfaceEvents(any(WantInterfaceEvents.class));
+        verify(jVpp).getNotificationRegistry();
+        verify(notificationRegistry).registerSwInterfaceSetFlagsNotificationCallback(any(
+            SwInterfaceSetFlagsNotificationCallback.class));
+
+        interfaceChangeNotificationProducer.stop();
+        verify(jVpp, times(2)).wantInterfaceEvents(any(WantInterfaceEvents.class));
+        verify(notificationListenerReg).close();
+    }
+
+    @Test
+    public void testNotification() throws Exception {
+        final CompletableFuture<WantInterfaceEventsReply> response = new CompletableFuture<>();
+        response.complete(new WantInterfaceEventsReply());
+        doReturn(response).when(jVpp).wantInterfaceEvents(any(WantInterfaceEvents.class));
+        final InterfaceChangeNotificationProducer interfaceChangeNotificationProducer =
+            new InterfaceChangeNotificationProducer(jVpp, namingContext, mappingContext);
+
+        interfaceChangeNotificationProducer.start(collector);
+
+        final SwInterfaceSetFlagsNotification swInterfaceSetFlagsNotification = new SwInterfaceSetFlagsNotification();
+        swInterfaceSetFlagsNotification.deleted = 0;
+        swInterfaceSetFlagsNotification.swIfIndex = 0;
+        swInterfaceSetFlagsNotification.adminUpDown = 1;
+        swInterfaceSetFlagsNotification.linkUpDown = 1;
+
+        callbackArgumentCaptor.getValue().onSwInterfaceSetFlagsNotification(swInterfaceSetFlagsNotification);
+        final ArgumentCaptor<InterfaceStateChange> notificationCaptor =
+            ArgumentCaptor.forClass(InterfaceStateChange.class);
+        verify(collector).onNotification(notificationCaptor.capture());
+
+        assertEquals("eth0", notificationCaptor.getValue().getName().getString());
+        assertEquals(InterfaceStatus.Up, notificationCaptor.getValue().getAdminStatus());
+        assertEquals(InterfaceStatus.Up, notificationCaptor.getValue().getOperStatus());
+    }
+}
\ No newline at end of file