diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ArpModeCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ArpModeCompleter.java
index 1edc547..b27eb3f 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ArpModeCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ArpModeCompleter.java
@@ -16,6 +16,7 @@
 package org.onosproject.openstacknetworking.cli;
 
 import com.google.common.collect.Lists;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
 import org.onosproject.cli.AbstractChoicesCompleter;
 
 import java.util.List;
@@ -23,6 +24,7 @@
 /**
  * ARP mode completer.
  */
+@Service
 public class ArpModeCompleter extends AbstractChoicesCompleter {
 
     @Override
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DeleteExternalPeerRouterCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DeleteExternalPeerRouterCommand.java
index 0ef3861..2154cb8 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DeleteExternalPeerRouterCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DeleteExternalPeerRouterCommand.java
@@ -16,8 +16,8 @@
 package org.onosproject.openstacknetworking.cli;
 
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.ExternalPeerRouter;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkAdminService;
@@ -38,7 +38,7 @@
     private static final String NO_ELEMENT = "There's no external peer router information with given ip address";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkAdminService service = AbstractShellCommand.get(OpenstackNetworkAdminService.class);
 
         if (service.externalPeerRouters().stream()
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DirectPortListCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DirectPortListCompleter.java
index d44b8d4..f2b1e20 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DirectPortListCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/DirectPortListCompleter.java
@@ -15,8 +15,11 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.console.Completer;
-import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.console.CommandLine;
+import org.apache.karaf.shell.api.console.Completer;
+import org.apache.karaf.shell.api.console.Session;
+import org.apache.karaf.shell.support.completers.StringsCompleter;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
 import org.openstack4j.model.network.Port;
@@ -32,10 +35,11 @@
 /**
  * Direct port completer.
  */
+@Service
 public class DirectPortListCompleter implements Completer {
 
     @Override
-    public int complete(String buffer, int cursor, List<String> candidates) {
+    public int complete(Session session, CommandLine commandLine, List<String> candidates) {
         StringsCompleter delegate = new StringsCompleter();
         OpenstackNetworkService osNetService = AbstractShellCommand.get(OpenstackNetworkService.class);
         Set<String> set = osNetService.ports().stream()
@@ -49,6 +53,6 @@
         while (it.hasNext()) {
             strings.add(it.next().toString());
         }
-        return delegate.complete(buffer, cursor, candidates);
+        return delegate.complete(session, commandLine, candidates);
     }
 }
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ExternalPeerRouterListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ExternalPeerRouterListCommand.java
index 99a95c0..0fd29d0 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ExternalPeerRouterListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/ExternalPeerRouterListCommand.java
@@ -18,7 +18,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.ExternalPeerRouter;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
@@ -37,7 +37,7 @@
     private static final String FORMAT = "%-20s%-20s%-20s";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkService service = AbstractShellCommand.get(OpenstackNetworkService.class);
         List<ExternalPeerRouter> routers = Lists.newArrayList(service.externalPeerRouters());
 
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstanceIpAddressCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstanceIpAddressCompleter.java
index a41a643..708d4f6 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstanceIpAddressCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstanceIpAddressCompleter.java
@@ -15,8 +15,11 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.console.Completer;
-import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.console.CommandLine;
+import org.apache.karaf.shell.api.console.Completer;
+import org.apache.karaf.shell.api.console.Session;
+import org.apache.karaf.shell.support.completers.StringsCompleter;
 import org.onlab.packet.IpAddress;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.InstancePort;
@@ -31,11 +34,12 @@
 /**
  * Instance port ip address completer.
  */
+@Service
 public class InstanceIpAddressCompleter implements Completer {
     private static final String EXTERNAL_IP = "8.8.8.8";
 
     @Override
-    public int complete(String buffer, int cursor, List<String> candidates) {
+    public int complete(Session session, CommandLine commandLine, List<String> candidates) {
         StringsCompleter delegate = new StringsCompleter();
         InstancePortService instancePortService =
                 AbstractShellCommand.get(InstancePortService.class);
@@ -53,7 +57,7 @@
             strings.add(it.next().toString());
         }
 
-        return delegate.complete(buffer, cursor, candidates);
+        return delegate.complete(session, commandLine, candidates);
 
 
     }
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortIdCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortIdCompleter.java
index c18a0a4..bf6a0e9 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortIdCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortIdCompleter.java
@@ -15,8 +15,11 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.console.Completer;
-import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.console.CommandLine;
+import org.apache.karaf.shell.api.console.Completer;
+import org.apache.karaf.shell.api.console.Session;
+import org.apache.karaf.shell.support.completers.StringsCompleter;
 import org.onosproject.openstacknetworking.api.InstancePort;
 import org.onosproject.openstacknetworking.api.InstancePortService;
 
@@ -30,10 +33,11 @@
 /**
  * Instance port ID completer.
  */
+@Service
 public class InstancePortIdCompleter implements Completer {
 
     @Override
-    public int complete(String buffer, int cursor, List<String> candidates) {
+    public int complete(Session session, CommandLine commandLine, List<String> candidates) {
         StringsCompleter delegate = new StringsCompleter();
 
         InstancePortService service = get(InstancePortService.class);
@@ -43,6 +47,6 @@
 
         strings.addAll(portIds);
 
-        return delegate.complete(buffer, cursor, candidates);
+        return delegate.complete(session, commandLine, candidates);
     }
 }
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortListCommand.java
index 8b0d111..00c7e75 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/InstancePortListCommand.java
@@ -18,7 +18,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.InstancePort;
 import org.onosproject.openstacknetworking.api.InstancePortService;
@@ -38,7 +38,7 @@
     private static final String FORMAT = "%-40s%-10s%-25s%-15s%-20s";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         InstancePortService service = get(InstancePortService.class);
         List<InstancePort> instancePorts = Lists.newArrayList(service.instancePorts());
         instancePorts.sort(Comparator.comparing(InstancePort::portId));
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/IpAddressCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/IpAddressCompleter.java
index bac877d..1dd3777 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/IpAddressCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/IpAddressCompleter.java
@@ -15,8 +15,11 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.console.Completer;
-import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.console.CommandLine;
+import org.apache.karaf.shell.api.console.Completer;
+import org.apache.karaf.shell.api.console.Session;
+import org.apache.karaf.shell.support.completers.StringsCompleter;
 import org.onlab.packet.IpAddress;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.ExternalPeerRouter;
@@ -31,10 +34,11 @@
 /**
  * IP Address Completer.
  */
+@Service
 public class IpAddressCompleter implements Completer {
 
     @Override
-    public int complete(String buffer, int cursor, List<String> candidates) {
+    public int complete(Session session, CommandLine commandLine, List<String> candidates) {
         StringsCompleter delegate = new StringsCompleter();
         OpenstackNetworkService osNetService = AbstractShellCommand.get(OpenstackNetworkService.class);
         Set<IpAddress> set = osNetService.externalPeerRouters().stream()
@@ -48,7 +52,7 @@
             strings.add(it.next().toString());
         }
 
-        return delegate.complete(buffer, cursor, candidates);
+        return delegate.complete(session, commandLine, candidates);
 
     }
 }
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/MacAddressCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/MacAddressCompleter.java
index 3b6e475..d55d246 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/MacAddressCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/MacAddressCompleter.java
@@ -15,8 +15,11 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.console.Completer;
-import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.console.CommandLine;
+import org.apache.karaf.shell.api.console.Completer;
+import org.apache.karaf.shell.api.console.Session;
+import org.apache.karaf.shell.support.completers.StringsCompleter;
 import org.onlab.packet.MacAddress;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.ExternalPeerRouter;
@@ -31,10 +34,11 @@
 /**
  * Mac Address Completer.
  */
+@Service
 public class MacAddressCompleter implements Completer {
 
         @Override
-        public int complete(String buffer, int cursor, List<String> candidates) {
+        public int complete(Session session, CommandLine commandLine, List<String> candidates) {
         StringsCompleter delegate = new StringsCompleter();
         OpenstackNetworkService osNetService = AbstractShellCommand.get(OpenstackNetworkService.class);
         Set<MacAddress> set = osNetService.externalPeerRouters().stream()
@@ -48,7 +52,7 @@
             strings.add(it.next().toString());
         }
 
-        return delegate.complete(buffer, cursor, candidates);
+        return delegate.complete(session, commandLine, candidates);
 
     }
     }
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackAddAclCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackAddAclCommand.java
index 1b9a707..0e4fdde 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackAddAclCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackAddAclCommand.java
@@ -15,8 +15,8 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.IPv4;
 import org.onlab.packet.IpAddress;
@@ -57,7 +57,7 @@
     private int dstPort = 0;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
 
         OpenstackFlowRuleService flowRuleService = AbstractShellCommand.get(OpenstackFlowRuleService.class);
         CoreService coreService = AbstractShellCommand.get(CoreService.class);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackConfigArpModeCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackConfigArpModeCommand.java
index 5f954ef..9d08658 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackConfigArpModeCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackConfigArpModeCommand.java
@@ -15,8 +15,8 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cfg.ComponentConfigService;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.core.ApplicationId;
@@ -49,7 +49,7 @@
     String arpMode = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
 
         if (checkArpMode(arpMode)) {
             configArpMode(arpMode);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java
index c6ff793..16c36de 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java
@@ -15,8 +15,8 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.net.device.DeviceService;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
@@ -43,7 +43,7 @@
     private String portId = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkService osNetService = AbstractShellCommand.get(OpenstackNetworkService.class);
         OpenstackNodeService osNodeService = AbstractShellCommand.get(OpenstackNodeService.class);
         DeviceService deviceService = AbstractShellCommand.get(DeviceService.class);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortListCommand.java
index 9466481..5c2eb7c 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortListCommand.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
 import org.openstack4j.model.network.IP;
@@ -39,7 +39,7 @@
     private static final String FORMAT = "%-40s%-20s%-20s%-20s%-20s%-20s";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkService service = AbstractShellCommand.get(OpenstackNetworkService.class);
 
         List<Port> ports = service.ports().stream()
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFloatingIpListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFloatingIpListCommand.java
index b30cf1e..49a6600 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFloatingIpListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFloatingIpListCommand.java
@@ -19,7 +19,7 @@
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackRouterService;
 import org.openstack4j.model.network.NetFloatingIP;
@@ -41,7 +41,7 @@
     private static final String FORMAT = "%-40s%-20s%-20s";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackRouterService service = AbstractShellCommand.get(OpenstackRouterService.class);
         List<NetFloatingIP> floatingIps = Lists.newArrayList(service.floatingIps());
         floatingIps.sort(Comparator.comparing(NetFloatingIP::getFloatingIpAddress));
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFlowTraceCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFlowTraceCommand.java
index bbaaaff..25d78fe 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFlowTraceCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackFlowTraceCommand.java
@@ -15,8 +15,8 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.InstancePort;
 import org.onosproject.openstacknetworking.api.InstancePortAdminService;
@@ -50,7 +50,7 @@
 
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNodeAdminService osNodeService = AbstractShellCommand.get(OpenstackNodeAdminService.class);
         InstancePortAdminService instancePortService = AbstractShellCommand.get(InstancePortAdminService.class);
         OpenstackNetworkAdminService osNetService = AbstractShellCommand.get(OpenstackNetworkAdminService.class);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackNetworkListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackNetworkListCommand.java
index 3a68356..8c55ccc 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackNetworkListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackNetworkListCommand.java
@@ -18,7 +18,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
 import org.openstack4j.model.network.Network;
@@ -42,7 +42,7 @@
     private static final String FORMAT = "%-40s%-20s%-20s%-20s%-16s%-8s";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkService service = AbstractShellCommand.get(OpenstackNetworkService.class);
         List<Network> networks = Lists.newArrayList(service.networks());
         networks.sort(Comparator.comparing(Network::getName));
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPortListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPortListCommand.java
index 1861f44..9233e15 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPortListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPortListCommand.java
@@ -19,8 +19,8 @@
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
 import org.openstack4j.model.network.IP;
@@ -48,7 +48,7 @@
     private String networkId = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkService service = AbstractShellCommand.get(OpenstackNetworkService.class);
 
         List<Port> ports = Lists.newArrayList(service.ports());
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeRulesCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeRulesCommand.java
index be72076..371edd3 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeRulesCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeRulesCommand.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
@@ -30,7 +30,7 @@
 public class OpenstackPurgeRulesCommand extends AbstractShellCommand {
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         FlowRuleService flowRuleService = AbstractShellCommand.get(FlowRuleService.class);
         CoreService coreService = AbstractShellCommand.get(CoreService.class);
         ApplicationId appId = coreService.getAppId(Constants.OPENSTACK_NETWORKING_APP_ID);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeStateCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeStateCommand.java
index 8601505..87df4b4 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeStateCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackPurgeStateCommand.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkAdminService;
 import org.onosproject.openstacknetworking.api.OpenstackRouterAdminService;
@@ -29,7 +29,7 @@
 public class OpenstackPurgeStateCommand extends AbstractShellCommand {
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         get(OpenstackRouterAdminService.class).clear();
         get(OpenstackNetworkAdminService.class).clear();
         get(OpenstackSecurityGroupAdminService.class).clear();
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRemoveAclCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRemoveAclCommand.java
index cba0c7a..3ce24e2 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRemoveAclCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRemoveAclCommand.java
@@ -15,8 +15,8 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.IPv4;
 import org.onlab.packet.IpAddress;
@@ -54,7 +54,7 @@
     private int dstPort = 0;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
 
         OpenstackFlowRuleService flowRuleService = AbstractShellCommand.get(OpenstackFlowRuleService.class);
         CoreService coreService = AbstractShellCommand.get(CoreService.class);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackResetPortsCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackResetPortsCommand.java
index 86158e3..fdd86c7 100755
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackResetPortsCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackResetPortsCommand.java
@@ -15,9 +15,9 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
-import org.apache.karaf.shell.commands.Option;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.Option;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.InstancePort;
 import org.onosproject.openstacknetworking.api.InstancePortAdminService;
@@ -48,7 +48,7 @@
     private static final long SLEEP_MS = 1000; // we wait 1s for reset each port
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         InstancePortAdminService service = get(InstancePortAdminService.class);
 
         if ((!isAll && !isInactive && portIds == null) ||
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRouterListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRouterListCommand.java
index a1aca70..b6ace99 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRouterListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackRouterListCommand.java
@@ -18,7 +18,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkService;
 import org.onosproject.openstacknetworking.api.OpenstackRouterService;
@@ -51,7 +51,7 @@
             AbstractShellCommand.get(OpenstackNetworkService.class);
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         List<Router> routers = Lists.newArrayList(routerService.routers());
         routers.sort(Comparator.comparing(Router::getName));
 
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSecurityGroupListCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSecurityGroupListCommand.java
index b20408c..48bb374 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSecurityGroupListCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSecurityGroupListCommand.java
@@ -18,8 +18,8 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackSecurityGroupService;
 import org.openstack4j.model.network.SecurityGroup;
@@ -44,7 +44,7 @@
     private String networkId = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackSecurityGroupService service =
                 AbstractShellCommand.get(OpenstackSecurityGroupService.class);
 
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncRulesCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncRulesCommand.java
index f6ba119..a539497 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncRulesCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncRulesCommand.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknode.api.NodeState;
 import org.onosproject.openstacknode.api.OpenstackNode;
@@ -34,7 +34,7 @@
     private static final long SLEEP_MS = 3000; // we wait 3s for init each node
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         // All handlers in this application reacts the node complete event and
         // tries to re-configure flow rules for the complete node.
         OpenstackNodeService osNodeService = AbstractShellCommand.get(OpenstackNodeService.class);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java
index 37360b1..fe3a3ed 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java
@@ -16,7 +16,7 @@
 package org.onosproject.openstacknetworking.cli;
 
 import com.google.common.base.Strings;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Command;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.OpenstackNetworkAdminService;
 import org.onosproject.openstacknetworking.api.OpenstackRouterAdminService;
@@ -58,7 +58,7 @@
     private static final String DEVICE_OWNER_IFACE = "network:router_interface";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackSecurityGroupAdminService osSgAdminService = get(OpenstackSecurityGroupAdminService.class);
         OpenstackNetworkAdminService osNetAdminService = get(OpenstackNetworkAdminService.class);
         OpenstackRouterAdminService osRouterAdminService = get(OpenstackRouterAdminService.class);
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/PurgeInstancePortsCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/PurgeInstancePortsCommand.java
index b785369..f782c82 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/PurgeInstancePortsCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/PurgeInstancePortsCommand.java
@@ -15,9 +15,9 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
-import org.apache.karaf.shell.commands.Option;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.Option;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.InstancePort;
 import org.onosproject.openstacknetworking.api.InstancePortAdminService;
@@ -45,7 +45,7 @@
     private String[] portIds = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         InstancePortAdminService service = get(InstancePortAdminService.class);
 
         if ((!isAll && !isInactive && portIds == null) ||
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterCommand.java
index c4090e0..2ef184f 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterCommand.java
@@ -16,8 +16,8 @@
 package org.onosproject.openstacknetworking.cli;
 
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onlab.packet.Ip4Address;
 import org.onlab.packet.IpAddress;
 import org.onlab.packet.MacAddress;
@@ -52,7 +52,7 @@
     private static final String NONE = "None";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkAdminService service = AbstractShellCommand.get(OpenstackNetworkAdminService.class);
 
         IpAddress externalPeerIpAddress = IpAddress.valueOf(
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterVlanCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterVlanCommand.java
index 79125b2..d547ced 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterVlanCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/UpdateExternalPeerRouterVlanCommand.java
@@ -16,8 +16,8 @@
 package org.onosproject.openstacknetworking.cli;
 
 import com.google.common.collect.Lists;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
 import org.onlab.packet.Ip4Address;
 import org.onlab.packet.IpAddress;
 import org.onlab.packet.VlanId;
@@ -50,7 +50,7 @@
     private static final String NONE = "None";
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         OpenstackNetworkAdminService osNetAdminService = AbstractShellCommand.get(OpenstackNetworkAdminService.class);
         OpenstackRouterService osRouterService = AbstractShellCommand.get(OpenstackRouterService.class);
 
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/VlanIdCompleter.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/VlanIdCompleter.java
index 8f64642..092a5f0 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/VlanIdCompleter.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/VlanIdCompleter.java
@@ -15,8 +15,11 @@
  */
 package org.onosproject.openstacknetworking.cli;
 
-import org.apache.karaf.shell.console.Completer;
-import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.console.CommandLine;
+import org.apache.karaf.shell.api.console.Completer;
+import org.apache.karaf.shell.api.console.Session;
+import org.apache.karaf.shell.support.completers.StringsCompleter;
 import org.onlab.packet.VlanId;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.openstacknetworking.api.ExternalPeerRouter;
@@ -31,10 +34,11 @@
 /**
  * Vlan Id Completer.
  */
+@Service
 public class VlanIdCompleter implements Completer {
 
     @Override
-    public int complete(String buffer, int cursor, List<String> candidates) {
+    public int complete(Session session, CommandLine commandLine, List<String> candidates) {
         StringsCompleter delegate = new StringsCompleter();
         OpenstackNetworkService osNetService = AbstractShellCommand.get(OpenstackNetworkService.class);
         Set<VlanId> set = osNetService.externalPeerRouters().stream()
@@ -48,7 +52,7 @@
             strings.add(it.next().toString());
         }
 
-        return delegate.complete(buffer, cursor, candidates);
+        return delegate.complete(session, commandLine, candidates);
 
     }
 }
\ No newline at end of file
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupManager.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupManager.java
index a6e6e2a..e598413 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupManager.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSecurityGroupManager.java
@@ -47,7 +47,8 @@
  * Provides implementation of administering and interfacing OpenStack security
  * groups.
  */
-@Component(immediate = true, service = { OpenstackSecurityGroupAdminService.class, OpenstackSecurityGroupService.class })
+@Component(immediate = true,
+           service = { OpenstackSecurityGroupAdminService.class, OpenstackSecurityGroupService.class })
 public class OpenstackSecurityGroupManager
         extends ListenerRegistry<OpenstackSecurityGroupEvent, OpenstackSecurityGroupListener>
         implements OpenstackSecurityGroupAdminService, OpenstackSecurityGroupService {
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
index 4fcd6bd..daad9d1 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
@@ -16,7 +16,6 @@
 package org.onosproject.openstacknetworking.impl;
 
 import com.google.common.base.Strings;
-import com.google.common.collect.Sets;
 import org.onlab.packet.ARP;
 import org.onlab.packet.EthType;
 import org.onlab.packet.Ethernet;