diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/ActionProfileGroupEncoder.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/ActionProfileGroupEncoder.java
new file mode 100644
index 0000000..472bf8e
--- /dev/null
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/ActionProfileGroupEncoder.java
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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 org.onosproject.p4runtime.ctl;
+
+import com.google.common.collect.Maps;
+import org.onosproject.net.pi.model.PiPipeconf;
+import org.onosproject.net.pi.runtime.PiActionProfileId;
+import org.onosproject.net.pi.runtime.PiActionGroup;
+import org.onosproject.net.pi.runtime.PiActionGroupId;
+import p4.P4RuntimeOuterClass.ActionProfileGroup;
+import p4.P4RuntimeOuterClass.ActionProfileGroup.Member;
+import p4.P4RuntimeOuterClass.ActionProfileMember;
+import p4.config.P4InfoOuterClass;
+
+import java.util.Collection;
+import java.util.Map;
+
+import static java.lang.String.format;
+
+/**
+ * Encoder/Decoder for action profile group.
+ */
+public final class ActionProfileGroupEncoder {
+    private ActionProfileGroupEncoder() {
+        // hide default constructor
+    }
+
+    /**
+     * Encode a PI action group to a action profile group.
+     *
+     * @param piActionGroup the action profile group
+     * @param pipeconf the pipeconf
+     * @return a action profile group encoded from PI action group
+     * @throws P4InfoBrowser.NotFoundException if can't find action profile from P4Info browser
+     * @throws EncodeException if can't find P4Info from pipeconf
+     */
+    static ActionProfileGroup encode(PiActionGroup piActionGroup, PiPipeconf pipeconf)
+            throws P4InfoBrowser.NotFoundException, EncodeException {
+        P4InfoBrowser browser = PipeconfHelper.getP4InfoBrowser(pipeconf);
+
+        if (browser == null) {
+            throw new EncodeException(format("Can't get P4 info browser from pipeconf %s", pipeconf));
+        }
+
+        PiActionProfileId piActionProfileId = piActionGroup.actionProfileId();
+        int actionProfileId;
+        P4InfoOuterClass.ActionProfile actionProfile =
+                browser.actionProfiles().getByName(piActionProfileId.id());
+        actionProfileId = actionProfile.getPreamble().getId();
+        ActionProfileGroup.Builder actionProfileGroupBuilder =
+                ActionProfileGroup.newBuilder()
+                        .setGroupId(piActionGroup.id().id())
+                        .setActionProfileId(actionProfileId);
+
+        switch (piActionGroup.type()) {
+            case SELECT:
+                actionProfileGroupBuilder.setType(ActionProfileGroup.Type.SELECT);
+                break;
+            default:
+                throw new EncodeException(format("Unsupported pi action group type %s",
+                                                 piActionGroup.type()));
+        }
+
+        piActionGroup.members().forEach(m -> {
+            // TODO: currently we don't set "watch" field of member
+            Member member = Member.newBuilder()
+                    .setMemberId(m.id().id())
+                    .setWeight(m.weight())
+                    .build();
+            actionProfileGroupBuilder.addMembers(member);
+        });
+
+        return actionProfileGroupBuilder.build();
+    }
+
+    /**
+     * Decode an action profile group with members information to a PI action group.
+     *
+     * @param actionProfileGroup the action profile group
+     * @param members members of the action profile group
+     * @param pipeconf the pipeconf
+     * @return decoded PI action group
+     * @throws P4InfoBrowser.NotFoundException if can't find action profile from P4Info browser
+     * @throws EncodeException if can't find P4Info from pipeconf
+     */
+    static PiActionGroup decode(ActionProfileGroup actionProfileGroup,
+                                        Collection<ActionProfileMember> members,
+                                        PiPipeconf pipeconf)
+            throws P4InfoBrowser.NotFoundException, EncodeException {
+        P4InfoBrowser browser = PipeconfHelper.getP4InfoBrowser(pipeconf);
+        if (browser == null) {
+            throw new EncodeException(format("Can't get P4 info browser from pipeconf %s", pipeconf));
+        }
+        PiActionGroup.Builder piActionGroupBuilder = PiActionGroup.builder();
+
+        P4InfoOuterClass.ActionProfile actionProfile = browser.actionProfiles()
+                .getById(actionProfileGroup.getActionProfileId());
+        PiActionProfileId piActionProfileId = PiActionProfileId.of(actionProfile.getPreamble().getName());
+        piActionGroupBuilder.withActionProfileId(piActionProfileId)
+                .withId(PiActionGroupId.of(actionProfileGroup.getGroupId()));
+
+        switch (actionProfileGroup.getType()) {
+            case SELECT:
+                piActionGroupBuilder.withType(PiActionGroup.Type.SELECT);
+                break;
+            default:
+                throw new EncodeException(format("Unsupported action profile type %s",
+                                                 actionProfileGroup.getType()));
+        }
+
+        Map<Integer, Integer> memberWeights = Maps.newHashMap();
+        actionProfileGroup.getMembersList().forEach(member -> {
+            int weight = member.getWeight();
+            if (weight < 1) {
+                // FIXME: currently PI has a bug which will always return weight 0
+                // ONOS won't accept group member with weight 0
+                weight = 1;
+            }
+            memberWeights.put(member.getMemberId(), weight);
+        });
+
+        for (ActionProfileMember member : members) {
+            int weight = memberWeights.get(member.getMemberId());
+            piActionGroupBuilder
+                    .addMember(ActionProfileMemberEncoder.decode(member, weight, pipeconf));
+        }
+
+        return piActionGroupBuilder.build();
+    }
+}
diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/ActionProfileMemberEncoder.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/ActionProfileMemberEncoder.java
new file mode 100644
index 0000000..2f08a59
--- /dev/null
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/ActionProfileMemberEncoder.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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 org.onosproject.p4runtime.ctl;
+
+import org.onosproject.net.pi.model.PiPipeconf;
+import org.onosproject.net.pi.runtime.PiActionGroup;
+import org.onosproject.net.pi.runtime.PiActionGroupMember;
+import org.onosproject.net.pi.runtime.PiActionGroupMemberId;
+import p4.P4RuntimeOuterClass;
+import p4.P4RuntimeOuterClass.ActionProfileMember;
+import p4.config.P4InfoOuterClass;
+
+import static java.lang.String.format;
+import static org.onosproject.p4runtime.ctl.TableEntryEncoder.decodeActionMsg;
+import static org.onosproject.p4runtime.ctl.TableEntryEncoder.encodePiAction;
+
+/**
+ * Encoder/Decoder of action profile member.
+ */
+public final class ActionProfileMemberEncoder {
+    private ActionProfileMemberEncoder() {
+        // Hide default constructor
+    }
+
+    /**
+     * Encode a PiActionGroupMember to a ActionProfileMember.
+     *
+     * @param group the PI action group of members
+     * @param member the member to encode
+     * @param pipeconf the pipeconf
+     * @return encoded member
+     */
+    /**
+     * Encode a PiActionGroupMember to a ActionProfileMember.
+     *
+     * @param group the PI action group of members
+     * @param member the member to encode
+     * @param pipeconf the pipeconf, as encode spec
+     * @return encoded member
+     * @throws P4InfoBrowser.NotFoundException can't find action profile from P4Info browser
+     * @throws EncodeException can't find P4Info from pipeconf
+     */
+    static ActionProfileMember encode(PiActionGroup group,
+                                      PiActionGroupMember member,
+                                      PiPipeconf pipeconf)
+            throws P4InfoBrowser.NotFoundException, EncodeException {
+
+        P4InfoBrowser browser = PipeconfHelper.getP4InfoBrowser(pipeconf);
+
+        if (browser == null) {
+            throw new EncodeException(format("Can't get P4 info browser from pipeconf %s", pipeconf));
+        }
+
+        ActionProfileMember.Builder actionProfileMemberBuilder =
+                ActionProfileMember.newBuilder();
+
+        // member id
+        actionProfileMemberBuilder.setMemberId(member.id().id());
+
+        // action profile id
+        P4InfoOuterClass.ActionProfile actionProfile =
+                browser.actionProfiles().getByName(group.actionProfileId().id());
+
+        int actionProfileId = actionProfile.getPreamble().getId();
+        actionProfileMemberBuilder.setActionProfileId(actionProfileId);
+
+        // Action
+        P4RuntimeOuterClass.Action action = encodePiAction(member.action(), browser);
+        actionProfileMemberBuilder.setAction(action);
+
+        return actionProfileMemberBuilder.build();
+    }
+
+    /**
+     * Decode an action profile member to PI action group member.
+     *
+     * @param member the action profile member
+     * @param weight the weight of the member
+     * @param pipeconf the pipeconf, as decode spec
+     * @return decoded PI action group member
+     * @throws P4InfoBrowser.NotFoundException can't find definition of action from P4 info
+     * @throws EncodeException can't get P4 info browser from pipeconf
+     */
+    static PiActionGroupMember decode(ActionProfileMember member,
+                                      int weight,
+                                      PiPipeconf pipeconf)
+            throws P4InfoBrowser.NotFoundException, EncodeException {
+        P4InfoBrowser browser = PipeconfHelper.getP4InfoBrowser(pipeconf);
+
+        if (browser == null) {
+            throw new EncodeException(format("Can't get P4 info browser from pipeconf %s", pipeconf));
+        }
+        return PiActionGroupMember.builder().withId(PiActionGroupMemberId.of(member.getMemberId()))
+                .withWeight(weight)
+                .withAction(decodeActionMsg(member.getAction(), browser))
+                .build();
+    }
+}
diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeClientImpl.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeClientImpl.java
index a9adf55..7f22e79 100644
--- a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeClientImpl.java
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeClientImpl.java
@@ -17,7 +17,10 @@
 package org.onosproject.p4runtime.ctl;
 
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
 import com.google.common.collect.Sets;
 import com.google.protobuf.ByteString;
 import io.grpc.Context;
@@ -26,13 +29,17 @@
 import io.grpc.StatusRuntimeException;
 import io.grpc.stub.StreamObserver;
 import org.onlab.osgi.DefaultServiceDirectory;
+import org.onlab.util.Tools;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.pi.model.PiPipeconf;
+import org.onosproject.net.pi.runtime.PiActionProfileId;
 import org.onosproject.net.pi.runtime.PiCounterCellData;
 import org.onosproject.net.pi.runtime.PiCounterCellId;
 import org.onosproject.net.pi.runtime.PiCounterId;
 import org.onosproject.net.pi.runtime.PiDirectCounterCellId;
 import org.onosproject.net.pi.runtime.PiIndirectCounterCellId;
+import org.onosproject.net.pi.runtime.PiActionGroup;
+import org.onosproject.net.pi.runtime.PiActionGroupMember;
 import org.onosproject.net.pi.runtime.PiPacketOperation;
 import org.onosproject.net.pi.runtime.PiPipeconfService;
 import org.onosproject.net.pi.runtime.PiTableEntry;
@@ -41,6 +48,8 @@
 import org.onosproject.p4runtime.api.P4RuntimeEvent;
 import org.slf4j.Logger;
 import p4.P4RuntimeGrpc;
+import p4.P4RuntimeOuterClass.ActionProfileGroup;
+import p4.P4RuntimeOuterClass.ActionProfileMember;
 import p4.P4RuntimeOuterClass.Entity;
 import p4.P4RuntimeOuterClass.ForwardingPipelineConfig;
 import p4.P4RuntimeOuterClass.MasterArbitrationUpdate;
@@ -53,6 +62,7 @@
 import p4.P4RuntimeOuterClass.TableEntry;
 import p4.P4RuntimeOuterClass.Update;
 import p4.P4RuntimeOuterClass.WriteRequest;
+import p4.config.P4InfoOuterClass;
 import p4.config.P4InfoOuterClass.P4Info;
 import p4.tmp.P4Config;
 
@@ -69,6 +79,8 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.Supplier;
@@ -78,6 +90,8 @@
 import static org.onlab.util.Tools.groupedThreads;
 import static org.onosproject.net.pi.model.PiPipeconf.ExtensionType;
 import static org.slf4j.LoggerFactory.getLogger;
+import static p4.P4RuntimeOuterClass.Entity.EntityCase.ACTION_PROFILE_GROUP;
+import static p4.P4RuntimeOuterClass.Entity.EntityCase.ACTION_PROFILE_MEMBER;
 import static p4.P4RuntimeOuterClass.Entity.EntityCase.TABLE_ENTRY;
 import static p4.P4RuntimeOuterClass.PacketOut;
 import static p4.P4RuntimeOuterClass.SetForwardingPipelineConfigRequest.Action.VERIFY_AND_COMMIT;
@@ -106,7 +120,14 @@
     private final Lock writeLock = new ReentrantLock();
     private final StreamObserver<StreamMessageRequest> streamRequestObserver;
 
-
+    /**
+     * Default constructor.
+     *
+     * @param deviceId the ONOS device id
+     * @param p4DeviceId the P4 device id
+     * @param channel gRPC channel
+     * @param controller runtime client controller
+     */
     P4RuntimeClientImpl(DeviceId deviceId, long p4DeviceId, ManagedChannel channel,
                         P4RuntimeControllerImpl controller) {
         this.deviceId = deviceId;
@@ -216,6 +237,30 @@
                                "readAllCounterCells-" + cellIds.hashCode());
     }
 
+    @Override
+    public CompletableFuture<Boolean> writeActionGroupMembers(PiActionGroup group,
+                                                              Collection<PiActionGroupMember> members,
+                                                              WriteOperationType opType,
+                                                              PiPipeconf pipeconf) {
+        return supplyInContext(() -> doWriteActionGroupMembers(group, members, opType, pipeconf),
+                               "writeActionGroupMembers-" + opType.name());
+    }
+
+    @Override
+    public CompletableFuture<Boolean> writeActionGroup(PiActionGroup group,
+                                                       WriteOperationType opType,
+                                                       PiPipeconf pipeconf) {
+        return supplyInContext(() -> doWriteActionGroup(group, opType, pipeconf),
+                               "writeActionGroup-" + opType.name());
+    }
+
+    @Override
+    public CompletableFuture<Collection<PiActionGroup>> dumpGroups(PiActionProfileId actionProfileId,
+                                                                   PiPipeconf pipeconf) {
+        return supplyInContext(() -> doDumpGroups(actionProfileId, pipeconf),
+                               "dumpGroups-" + actionProfileId.id());
+    }
+
     /* Blocking method implementations below */
 
     private boolean doInitStreamChannel() {
@@ -464,6 +509,191 @@
         return CounterEntryCodec.decodeCounterEntities(entities, counterIdMap, pipeconf);
     }
 
+    private boolean doWriteActionGroupMembers(PiActionGroup group, Collection<PiActionGroupMember> members,
+                                              WriteOperationType opType, PiPipeconf pipeconf) {
+        WriteRequest.Builder writeRequestBuilder = WriteRequest.newBuilder();
+
+        Collection<ActionProfileMember> actionProfileMembers = Lists.newArrayList();
+        try {
+            for (PiActionGroupMember member : members) {
+                actionProfileMembers.add(
+                        ActionProfileMemberEncoder.encode(group, member, pipeconf)
+                );
+            }
+        } catch (EncodeException | P4InfoBrowser.NotFoundException e) {
+            log.warn("Can't encode group member {} due to {}", members, e.getMessage());
+            return false;
+        }
+
+        Collection<Update> updateMsgs = actionProfileMembers.stream()
+                .map(actionProfileMember ->
+                             Update.newBuilder()
+                                     .setEntity(Entity.newBuilder()
+                                                        .setActionProfileMember(actionProfileMember)
+                                                        .build())
+                                     .setType(UPDATE_TYPES.get(opType))
+                                     .build())
+                .collect(Collectors.toList());
+
+        if (updateMsgs.size() == 0) {
+            // Nothing to update
+            return true;
+        }
+
+        writeRequestBuilder
+                .setDeviceId(p4DeviceId)
+                .addAllUpdates(updateMsgs);
+        try {
+            blockingStub.write(writeRequestBuilder.build());
+            return true;
+        } catch (StatusRuntimeException e) {
+            log.warn("Unable to write table entries ({}): {}", opType, e.getMessage());
+            return false;
+        }
+    }
+
+    private Collection<PiActionGroup> doDumpGroups(PiActionProfileId piActionProfileId, PiPipeconf pipeconf) {
+        log.debug("Dumping groups from action profile {} from {} (pipeconf {})...",
+                  piActionProfileId.id(), deviceId, pipeconf.id());
+        P4InfoBrowser browser = PipeconfHelper.getP4InfoBrowser(pipeconf);
+        if (browser == null) {
+            log.warn("Unable to get a P4Info browser for pipeconf {}, skipping dump action profile {}",
+                     pipeconf, piActionProfileId);
+            return Collections.emptySet();
+        }
+
+        int actionProfileId;
+        try {
+            P4InfoOuterClass.ActionProfile actionProfile =
+                    browser.actionProfiles().getByName(piActionProfileId.id());
+            actionProfileId = actionProfile.getPreamble().getId();
+        } catch (P4InfoBrowser.NotFoundException e) {
+            log.warn("Can't find action profile {} from p4info", piActionProfileId);
+            return Collections.emptySet();
+        }
+
+        ActionProfileGroup actionProfileGroup =
+                ActionProfileGroup.newBuilder()
+                        .setActionProfileId(actionProfileId)
+                        .build();
+
+        ReadRequest requestMsg = ReadRequest.newBuilder()
+                .setDeviceId(p4DeviceId)
+                .addEntities(Entity.newBuilder()
+                                     .setActionProfileGroup(actionProfileGroup)
+                                     .build())
+                .build();
+
+        Iterator<ReadResponse> responses;
+        try {
+            responses = blockingStub.read(requestMsg);
+        } catch (StatusRuntimeException e) {
+            log.warn("Unable to read action profile {} due to {}", piActionProfileId, e.getMessage());
+            return Collections.emptySet();
+        }
+
+        List<ActionProfileGroup> actionProfileGroups =
+                Tools.stream(() -> responses)
+                        .map(ReadResponse::getEntitiesList)
+                        .flatMap(List::stream)
+                        .filter(entity -> entity.getEntityCase() == ACTION_PROFILE_GROUP)
+                        .map(Entity::getActionProfileGroup)
+                        .collect(Collectors.toList());
+
+        log.debug("Retrieved {} groups from action profile {} on {}...",
+                  actionProfileGroups.size(), piActionProfileId.id(), deviceId);
+
+        // group id -> members
+        Multimap<Integer, ActionProfileMember> actionProfileMemberMap = HashMultimap.create();
+        AtomicLong memberCount = new AtomicLong(0);
+        AtomicBoolean success = new AtomicBoolean(true);
+        actionProfileGroups.forEach(actProfGrp -> {
+            actProfGrp.getMembersList().forEach(member -> {
+                ActionProfileMember actProfMember =
+                        ActionProfileMember.newBuilder()
+                                .setActionProfileId(actProfGrp.getActionProfileId())
+                                .setMemberId(member.getMemberId())
+                                .build();
+                Entity entity = Entity.newBuilder()
+                        .setActionProfileMember(actProfMember)
+                        .build();
+
+                ReadRequest reqMsg = ReadRequest.newBuilder().setDeviceId(p4DeviceId)
+                        .addEntities(entity)
+                        .build();
+
+                Iterator<ReadResponse> resps;
+                try {
+                    resps = blockingStub.read(reqMsg);
+                } catch (StatusRuntimeException e) {
+                    log.warn("Unable to read member {} from action profile {} due to {}",
+                             member, piActionProfileId, e.getMessage());
+                    success.set(false);
+                    return;
+                }
+                Tools.stream(() -> resps)
+                        .map(ReadResponse::getEntitiesList)
+                        .flatMap(List::stream)
+                        .filter(e -> e.getEntityCase() == ACTION_PROFILE_MEMBER)
+                        .map(Entity::getActionProfileMember)
+                        .forEach(m -> {
+                            actionProfileMemberMap.put(actProfGrp.getGroupId(), m);
+                            memberCount.incrementAndGet();
+                        });
+            });
+        });
+
+        if (!success.get()) {
+            // Can't read members
+            return Collections.emptySet();
+        }
+        log.info("Retrieved {} group members from action profile {} on {}...",
+                 memberCount.get(), piActionProfileId.id(), deviceId);
+
+        Collection<PiActionGroup> piActionGroups = Sets.newHashSet();
+
+        for (ActionProfileGroup apg : actionProfileGroups) {
+            try {
+                Collection<ActionProfileMember> members = actionProfileMemberMap.get(apg.getGroupId());
+                PiActionGroup decodedGroup =
+                        ActionProfileGroupEncoder.decode(apg, members, pipeconf);
+                piActionGroups.add(decodedGroup);
+            } catch (EncodeException | P4InfoBrowser.NotFoundException e) {
+                log.warn("Can't decode group {} due to {}", apg, e.getMessage());
+                return Collections.emptySet();
+            }
+        }
+
+        return piActionGroups;
+    }
+
+    private boolean doWriteActionGroup(PiActionGroup group, WriteOperationType opType, PiPipeconf pipeconf) {
+        WriteRequest.Builder writeRequestBuilder = WriteRequest.newBuilder();
+        ActionProfileGroup actionProfileGroup;
+        try {
+            actionProfileGroup = ActionProfileGroupEncoder.encode(group, pipeconf);
+        } catch (EncodeException | P4InfoBrowser.NotFoundException e) {
+            log.warn("Can't encode group {} due to {}", e.getMessage());
+            return false;
+        }
+        Update updateMessage = Update.newBuilder()
+                .setEntity(Entity.newBuilder()
+                                   .setActionProfileGroup(actionProfileGroup)
+                                   .build())
+                .setType(UPDATE_TYPES.get(opType))
+                .build();
+        writeRequestBuilder
+                .setDeviceId(p4DeviceId)
+                .addUpdates(updateMessage);
+        try {
+            blockingStub.write(writeRequestBuilder.build());
+            return true;
+        } catch (StatusRuntimeException e) {
+            log.warn("Unable to write table entries ({}): {}", opType, e.getMessage());
+            return false;
+        }
+    }
+
     /**
      * Returns the internal P4 device ID associated with this client.
      *
diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeControllerImpl.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeControllerImpl.java
index e26341b..383b857 100644
--- a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeControllerImpl.java
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeControllerImpl.java
@@ -186,7 +186,7 @@
         }
     }
 
-    void postEvent(P4RuntimeEvent event) {
+    public void postEvent(P4RuntimeEvent event) {
         post(event);
     }
 }
diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeUtils.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeUtils.java
new file mode 100644
index 0000000..411e1fb
--- /dev/null
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/P4RuntimeUtils.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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 org.onosproject.p4runtime.ctl;
+
+import com.google.protobuf.ByteString;
+
+import static java.lang.String.format;
+
+/**
+ * Utilities for P4 runtime control.
+ */
+public final class P4RuntimeUtils {
+
+    private P4RuntimeUtils() {
+        // Hide default construction
+    }
+
+    static void assertSize(String entityDescr, ByteString value, int bitWidth)
+            throws EncodeException {
+
+        int byteWidth = (int) Math.ceil((float) bitWidth / 8);
+        if (value.size() != byteWidth) {
+            throw new EncodeException(format("Wrong size for %s, expected %d bytes, but found %d",
+                                             entityDescr, byteWidth, value.size()));
+        }
+    }
+
+    static void assertPrefixLen(String entityDescr, int prefixLength, int bitWidth)
+            throws EncodeException {
+
+        if (prefixLength > bitWidth) {
+            throw new EncodeException(format(
+                    "wrong prefix length for %s, field size is %d bits, but found one is %d",
+                    entityDescr, bitWidth, prefixLength));
+        }
+    }
+}
diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/TableEntryEncoder.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/TableEntryEncoder.java
index 9ffc18f..8278b3e 100644
--- a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/TableEntryEncoder.java
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/TableEntryEncoder.java
@@ -17,10 +17,13 @@
 package org.onosproject.p4runtime.ctl;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Lists;
 import com.google.protobuf.ByteString;
 import org.onlab.util.ImmutableByteSequence;
 import org.onosproject.net.pi.model.PiPipeconf;
 import org.onosproject.net.pi.runtime.PiAction;
+import org.onosproject.net.pi.runtime.PiActionGroupId;
+import org.onosproject.net.pi.runtime.PiActionGroupMemberId;
 import org.onosproject.net.pi.runtime.PiActionId;
 import org.onosproject.net.pi.runtime.PiActionParam;
 import org.onosproject.net.pi.runtime.PiActionParamId;
@@ -36,25 +39,26 @@
 import org.onosproject.net.pi.runtime.PiTernaryFieldMatch;
 import org.onosproject.net.pi.runtime.PiValidFieldMatch;
 import org.slf4j.Logger;
-import p4.P4RuntimeOuterClass.Action;
 import p4.P4RuntimeOuterClass.FieldMatch;
 import p4.P4RuntimeOuterClass.TableAction;
 import p4.P4RuntimeOuterClass.TableEntry;
+import p4.P4RuntimeOuterClass.Action;
 import p4.config.P4InfoOuterClass;
 
 import java.util.Collection;
 import java.util.Collections;
+import java.util.List;
 
 import static java.lang.String.format;
 import static org.onlab.util.ImmutableByteSequence.copyFrom;
+import static org.onosproject.p4runtime.ctl.P4RuntimeUtils.assertPrefixLen;
+import static org.onosproject.p4runtime.ctl.P4RuntimeUtils.assertSize;
 import static org.slf4j.LoggerFactory.getLogger;
 
 /**
- * Encoder of table entries, from ONOS Pi* format, to P4Runtime protobuf messages, and vice versa.
+ * Encoder/Decoder of table entries, from ONOS Pi* format, to P4Runtime protobuf messages, and vice versa.
  */
 final class TableEntryEncoder {
-
-
     private static final Logger log = getLogger(TableEntryEncoder.class);
 
     private static final String HEADER_PREFIX = "hdr.";
@@ -422,7 +426,7 @@
         }
     }
 
-    private static TableAction encodePiTableAction(PiTableAction piTableAction, P4InfoBrowser browser)
+    static TableAction encodePiTableAction(PiTableAction piTableAction, P4InfoBrowser browser)
             throws P4InfoBrowser.NotFoundException, EncodeException {
 
         TableAction.Builder tableActionMsgBuilder = TableAction.newBuilder();
@@ -430,24 +434,17 @@
         switch (piTableAction.type()) {
             case ACTION:
                 PiAction piAction = (PiAction) piTableAction;
-                int actionId = browser.actions().getByName(piAction.id().name()).getPreamble().getId();
-
-                Action.Builder actionMsgBuilder = Action.newBuilder().setActionId(actionId);
-
-                for (PiActionParam p : piAction.parameters()) {
-                    P4InfoOuterClass.Action.Param paramInfo = browser.actionParams(actionId).getByName(p.id().name());
-                    ByteString paramValue = ByteString.copyFrom(p.value().asReadOnlyBuffer());
-                    assertSize(format("param '%s' of action '%s'", p.id(), piAction.id()),
-                               paramValue, paramInfo.getBitwidth());
-                    actionMsgBuilder.addParams(Action.Param.newBuilder()
-                                                       .setParamId(paramInfo.getId())
-                                                       .setValue(paramValue)
-                                                       .build());
-                }
-
-                tableActionMsgBuilder.setAction(actionMsgBuilder.build());
+                Action theAction = encodePiAction(piAction, browser);
+                tableActionMsgBuilder.setAction(theAction);
                 break;
-
+            case ACTION_GROUP_ID:
+                PiActionGroupId actionGroupId = (PiActionGroupId) piTableAction;
+                tableActionMsgBuilder.setActionProfileGroupId(actionGroupId.id());
+                break;
+            case GROUP_MEMBER_ID:
+                PiActionGroupMemberId actionGroupMemberId = (PiActionGroupMemberId) piTableAction;
+                tableActionMsgBuilder.setActionProfileMemberId(actionGroupMemberId.id());
+                break;
             default:
                 throw new EncodeException(
                         format("Building of table action type %s not implemented", piTableAction.type()));
@@ -456,50 +453,56 @@
         return tableActionMsgBuilder.build();
     }
 
-    private static PiTableAction decodeTableActionMsg(TableAction tableActionMsg, P4InfoBrowser browser)
+    static PiTableAction decodeTableActionMsg(TableAction tableActionMsg, P4InfoBrowser browser)
             throws P4InfoBrowser.NotFoundException, EncodeException {
-
         TableAction.TypeCase typeCase = tableActionMsg.getTypeCase();
-
         switch (typeCase) {
             case ACTION:
-                PiAction.Builder piActionBuilder = PiAction.builder();
                 Action actionMsg = tableActionMsg.getAction();
-                // Action ID.
-                int actionId = actionMsg.getActionId();
-                String actionName = browser.actions().getById(actionId).getPreamble().getName();
-                piActionBuilder.withId(PiActionId.of(actionName));
-                // Params.
-                for (Action.Param paramMsg : actionMsg.getParamsList()) {
-                    String paramName = browser.actionParams(actionId).getById(paramMsg.getParamId()).getName();
-                    ImmutableByteSequence paramValue = copyFrom(paramMsg.getValue().asReadOnlyByteBuffer());
-                    piActionBuilder.withParameter(new PiActionParam(PiActionParamId.of(paramName), paramValue));
-                }
-                return piActionBuilder.build();
-
+                return decodeActionMsg(actionMsg, browser);
             default:
                 throw new EncodeException(
                         format("Decoding of table action type %s not implemented", typeCase.name()));
         }
     }
 
-    private static void assertSize(String entityDescr, ByteString value, int bitWidth)
-            throws EncodeException {
+    static Action encodePiAction(PiAction piAction, P4InfoBrowser browser)
+            throws P4InfoBrowser.NotFoundException, EncodeException {
 
-        int byteWidth = (int) Math.ceil((float) bitWidth / 8);
-        if (value.size() != byteWidth) {
-            throw new EncodeException(format("Wrong size for %s, expected %d bytes, but found %d",
-                                             entityDescr, byteWidth, value.size()));
+        int actionId = browser.actions().getByName(piAction.id().name()).getPreamble().getId();
+
+        Action.Builder actionMsgBuilder =
+                Action.newBuilder().setActionId(actionId);
+
+        for (PiActionParam p : piAction.parameters()) {
+            P4InfoOuterClass.Action.Param paramInfo = browser.actionParams(actionId).getByName(p.id().name());
+            ByteString paramValue = ByteString.copyFrom(p.value().asReadOnlyBuffer());
+            assertSize(format("param '%s' of action '%s'", p.id(), piAction.id()),
+                       paramValue, paramInfo.getBitwidth());
+            actionMsgBuilder.addParams(Action.Param.newBuilder()
+                                               .setParamId(paramInfo.getId())
+                                               .setValue(paramValue)
+                                               .build());
         }
+
+        return actionMsgBuilder.build();
     }
 
-    private static void assertPrefixLen(String entityDescr, int prefixLength, int bitWidth)
-            throws EncodeException {
+    static PiAction decodeActionMsg(Action action, P4InfoBrowser browser)
+            throws P4InfoBrowser.NotFoundException {
+        P4InfoBrowser.EntityBrowser<P4InfoOuterClass.Action.Param> paramInfo =
+                browser.actionParams(action.getActionId());
+        String actionName = browser.actions()
+                .getById(action.getActionId())
+                .getPreamble().getName();
+        PiActionId id = PiActionId.of(actionName);
+        List<PiActionParam> params = Lists.newArrayList();
 
-        if (prefixLength > bitWidth) {
-            throw new EncodeException(format(
-                    "wrong prefix length for %s, field size is %d bits, but found one is %d",
-                    entityDescr, bitWidth, prefixLength));
+        for (Action.Param p : action.getParamsList()) {
+            String paramName = paramInfo.getById(p.getParamId()).getName();
+            ImmutableByteSequence value = ImmutableByteSequence.copyFrom(p.getValue().toByteArray());
+            params.add(new PiActionParam(PiActionParamId.of(paramName), value));
         }
+        return PiAction.builder().withId(id).withParameters(params).build();
     }
 }