diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeActionGroupProgrammable.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeActionGroupProgrammable.java
new file mode 100644
index 0000000..5ee965d
--- /dev/null
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeActionGroupProgrammable.java
@@ -0,0 +1,436 @@
+/*
+ * 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.drivers.p4runtime;
+
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.ListMultimap;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import com.google.common.util.concurrent.Striped;
+import org.onlab.util.SharedExecutors;
+import org.onosproject.drivers.p4runtime.mirror.P4RuntimeActionProfileMemberMirror;
+import org.onosproject.drivers.p4runtime.mirror.P4RuntimeGroupMirror;
+import org.onosproject.drivers.p4runtime.mirror.TimedEntry;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.group.DefaultGroup;
+import org.onosproject.net.group.DefaultGroupDescription;
+import org.onosproject.net.group.Group;
+import org.onosproject.net.group.GroupDescription;
+import org.onosproject.net.group.GroupOperation;
+import org.onosproject.net.group.GroupOperations;
+import org.onosproject.net.group.GroupProgrammable;
+import org.onosproject.net.group.GroupStore;
+import org.onosproject.net.pi.model.PiActionId;
+import org.onosproject.net.pi.model.PiActionProfileId;
+import org.onosproject.net.pi.model.PiActionProfileModel;
+import org.onosproject.net.pi.runtime.PiAction;
+import org.onosproject.net.pi.runtime.PiActionGroup;
+import org.onosproject.net.pi.runtime.PiActionGroupHandle;
+import org.onosproject.net.pi.runtime.PiActionGroupMember;
+import org.onosproject.net.pi.runtime.PiActionGroupMemberHandle;
+import org.onosproject.net.pi.runtime.PiActionGroupMemberId;
+import org.onosproject.net.pi.service.PiGroupTranslator;
+import org.onosproject.net.pi.service.PiTranslatedEntity;
+import org.onosproject.net.pi.service.PiTranslationException;
+import org.onosproject.p4runtime.api.P4RuntimeClient;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.locks.Lock;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.DELETE;
+import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.INSERT;
+import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.MODIFY;
+
+/**
+ * Implementation of GroupProgrammable to handle action profile groups in
+ * P4Runtime.
+ */
+public class P4RuntimeActionGroupProgrammable
+        extends AbstractP4RuntimeHandlerBehaviour
+        implements GroupProgrammable {
+
+    // If true, we avoid querying the device and return what's already known by
+    // the ONOS store.
+    private static final String READ_ACTION_GROUPS_FROM_MIRROR = "actionGroupReadFromMirror";
+    private static final boolean DEFAULT_READ_ACTION_GROUPS_FROM_MIRROR = false;
+
+    protected GroupStore groupStore;
+    private P4RuntimeGroupMirror groupMirror;
+    private P4RuntimeActionProfileMemberMirror memberMirror;
+    private PiGroupTranslator groupTranslator;
+
+    // Needed to synchronize operations over the same group.
+    private static final Striped<Lock> STRIPED_LOCKS = Striped.lock(30);
+
+    @Override
+    protected boolean setupBehaviour() {
+        if (!super.setupBehaviour()) {
+            return false;
+        }
+        groupMirror = this.handler().get(P4RuntimeGroupMirror.class);
+        memberMirror = this.handler().get(P4RuntimeActionProfileMemberMirror.class);
+        groupStore = handler().get(GroupStore.class);
+        groupTranslator = piTranslationService.groupTranslator();
+        return true;
+    }
+
+    @Override
+    public void performGroupOperation(DeviceId deviceId,
+                                      GroupOperations groupOps) {
+        if (!setupBehaviour()) {
+            return;
+        }
+
+        groupOps.operations().stream()
+                .filter(op -> !op.groupType().equals(GroupDescription.Type.ALL))
+                .forEach(op -> {
+                    // ONOS-7785 We need app cookie (action profile id) from the group
+                    Group groupOnStore = groupStore.getGroup(deviceId, op.groupId());
+                    GroupDescription groupDesc = new DefaultGroupDescription(
+                            deviceId, op.groupType(), op.buckets(), groupOnStore.appCookie(),
+                            op.groupId().id(), groupOnStore.appId());
+                    DefaultGroup groupToApply = new DefaultGroup(op.groupId(), groupDesc);
+                    processGroupOperation(groupToApply, op.opType());
+                });
+    }
+
+    @Override
+    public Collection<Group> getGroups() {
+        if (!setupBehaviour()) {
+            return Collections.emptyList();
+        }
+        return getActionGroups();
+    }
+
+    private Collection<Group> getActionGroups() {
+
+        if (driverBoolProperty(READ_ACTION_GROUPS_FROM_MIRROR,
+                               DEFAULT_READ_ACTION_GROUPS_FROM_MIRROR)) {
+            return getActionGroupsFromMirror();
+        }
+
+        final Collection<PiActionProfileId> actionProfileIds = pipeconf.pipelineModel()
+                .actionProfiles()
+                .stream()
+                .map(PiActionProfileModel::id)
+                .collect(Collectors.toList());
+        final List<PiActionGroup> groupsOnDevice = actionProfileIds.stream()
+                .flatMap(this::streamGroupsFromDevice)
+                .collect(Collectors.toList());
+        final Set<PiActionGroupMemberHandle> membersOnDevice = actionProfileIds
+                .stream()
+                .flatMap(actProfId -> getMembersFromDevice(actProfId)
+                        .stream()
+                        .map(memberId -> PiActionGroupMemberHandle.of(
+                                deviceId, actProfId, memberId)))
+                .collect(Collectors.toSet());
+
+        if (groupsOnDevice.isEmpty()) {
+            return Collections.emptyList();
+        }
+
+        // Sync mirrors.
+        syncGroupMirror(groupsOnDevice);
+        syncMemberMirror(membersOnDevice);
+
+        final List<Group> result = Lists.newArrayList();
+        final List<PiActionGroup> inconsistentGroups = Lists.newArrayList();
+        final List<PiActionGroup> validGroups = Lists.newArrayList();
+
+        for (PiActionGroup piGroup : groupsOnDevice) {
+            final Group pdGroup = forgeGroupEntry(piGroup);
+            if (pdGroup == null) {
+                // Entry is on device but unknown to translation service or
+                // device mirror. Inconsistent. Mark for removal.
+                inconsistentGroups.add(piGroup);
+            } else {
+                validGroups.add(piGroup);
+                result.add(pdGroup);
+            }
+        }
+
+        // Trigger clean up of inconsistent groups and members. This will also
+        // remove all members that are not used by any group, and update the
+        // mirror accordingly.
+        final Set<PiActionGroupMemberHandle> membersToKeep = validGroups.stream()
+                .flatMap(g -> g.members().stream())
+                .map(m -> PiActionGroupMemberHandle.of(deviceId, m))
+                .collect(Collectors.toSet());
+        final Set<PiActionGroupMemberHandle> inconsistentMembers = Sets.difference(
+                membersOnDevice, membersToKeep);
+        SharedExecutors.getSingleThreadExecutor().execute(
+                () -> cleanUpInconsistentGroupsAndMembers(
+                        inconsistentGroups, inconsistentMembers));
+
+        return result;
+    }
+
+    private void syncGroupMirror(Collection<PiActionGroup> groups) {
+        Map<PiActionGroupHandle, PiActionGroup> handleMap = Maps.newHashMap();
+        groups.forEach(g -> handleMap.put(PiActionGroupHandle.of(deviceId, g), g));
+        groupMirror.sync(deviceId, handleMap);
+    }
+
+    private void syncMemberMirror(Collection<PiActionGroupMemberHandle> memberHandles) {
+        Map<PiActionGroupMemberHandle, PiActionGroupMember> handleMap = Maps.newHashMap();
+       memberHandles.forEach(handle -> handleMap.put(
+                handle, dummyMember(handle.actionProfileId(), handle.memberId())));
+        memberMirror.sync(deviceId, handleMap);
+    }
+
+    private Collection<Group> getActionGroupsFromMirror() {
+        return groupMirror.getAll(deviceId).stream()
+                .map(TimedEntry::entry)
+                .map(this::forgeGroupEntry)
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+    }
+
+    private void cleanUpInconsistentGroupsAndMembers(Collection<PiActionGroup> groupsToRemove,
+                                                     Collection<PiActionGroupMemberHandle> membersToRemove) {
+        if (!groupsToRemove.isEmpty()) {
+            log.warn("Found {} inconsistent action profile groups on {}, removing them...",
+                     groupsToRemove.size(), deviceId);
+            groupsToRemove.forEach(piGroup -> {
+                log.debug(piGroup.toString());
+                processGroup(piGroup, null, Operation.REMOVE);
+            });
+        }
+        if (!membersToRemove.isEmpty()) {
+            log.warn("Found {} inconsistent action profile members on {}, removing them...",
+                     membersToRemove.size(), deviceId);
+            // FIXME: implement client call to remove members from multiple
+            // action profiles in one shot.
+            final ListMultimap<PiActionProfileId, PiActionGroupMemberId>
+                    membersByActProfId = ArrayListMultimap.create();
+            membersToRemove.forEach(m -> membersByActProfId.put(
+                    m.actionProfileId(), m.memberId()));
+            membersByActProfId.keySet().forEach(actProfId -> {
+                List<PiActionGroupMemberId> removedMembers = getFutureWithDeadline(
+                        client.removeActionProfileMembers(
+                                actProfId, membersByActProfId.get(actProfId), pipeconf),
+                        "cleaning up action profile members", Collections.emptyList());
+                // Update member mirror.
+                removedMembers.stream()
+                        .map(id -> PiActionGroupMemberHandle.of(deviceId, actProfId, id))
+                        .forEach(memberMirror::remove);
+            });
+        }
+    }
+
+    private Stream<PiActionGroup> streamGroupsFromDevice(PiActionProfileId actProfId) {
+        // TODO: implement P4Runtime client call to read all groups with one call
+        // Good if pipeline has multiple action profiles.
+        final Collection<PiActionGroup> groups = getFutureWithDeadline(
+                client.dumpGroups(actProfId, pipeconf),
+                "dumping groups", Collections.emptyList());
+        return groups.stream();
+    }
+
+    private List<PiActionGroupMemberId> getMembersFromDevice(PiActionProfileId actProfId) {
+        // TODO: implement P4Runtime client call to read all members with one call
+        // Good if pipeline has multiple action profiles.
+        return getFutureWithDeadline(
+                client.dumpActionProfileMemberIds(actProfId, pipeconf),
+                "dumping action profile ids", Collections.emptyList());
+    }
+
+    private Group forgeGroupEntry(PiActionGroup piGroup) {
+        final PiActionGroupHandle handle = PiActionGroupHandle.of(deviceId, piGroup);
+        final Optional<PiTranslatedEntity<Group, PiActionGroup>>
+                translatedEntity = groupTranslator.lookup(handle);
+        final TimedEntry<PiActionGroup> timedEntry = groupMirror.get(handle);
+        // Is entry consistent with our state?
+        if (!translatedEntity.isPresent()) {
+            log.warn("Group handle not found in translation store: {}", handle);
+            return null;
+        }
+        if (!translatedEntity.get().translated().equals(piGroup)) {
+            log.warn("Group obtained from device {} is different from the one in" +
+                             "translation store: device={}, store={}",
+                     deviceId, piGroup, translatedEntity.get().translated());
+            return null;
+        }
+        if (timedEntry == null) {
+            log.warn("Group handle not found in device mirror: {}", handle);
+            return null;
+        }
+        return addedGroup(translatedEntity.get().original(), timedEntry.lifeSec());
+    }
+
+    private Group addedGroup(Group original, long life) {
+        final DefaultGroup forgedGroup = new DefaultGroup(original.id(), original);
+        forgedGroup.setState(Group.GroupState.ADDED);
+        forgedGroup.setLife(life);
+        return forgedGroup;
+    }
+
+    private void processGroupOperation(Group pdGroup, GroupOperation.Type opType) {
+        final PiActionGroup piGroup;
+        try {
+            piGroup = groupTranslator.translate(pdGroup, pipeconf);
+        } catch (PiTranslationException e) {
+            log.warn("Unable to translate group, aborting {} operation: {} [{}]",
+                     opType, e.getMessage(), pdGroup);
+            return;
+        }
+        final Operation operation = opType.equals(GroupOperation.Type.DELETE)
+                ? Operation.REMOVE : Operation.APPLY;
+        processGroup(piGroup, pdGroup, operation);
+    }
+
+    private void processGroup(PiActionGroup groupToApply,
+                              Group pdGroup,
+                              Operation operation) {
+        final PiActionGroupHandle handle = PiActionGroupHandle.of(deviceId, groupToApply);
+        STRIPED_LOCKS.get(handle).lock();
+        try {
+            switch (operation) {
+                case APPLY:
+                    if (applyGroupWithMembersOrNothing(groupToApply, handle)) {
+                        groupTranslator.learn(handle, new PiTranslatedEntity<>(
+                                pdGroup, groupToApply, handle));
+                    }
+                    return;
+                case REMOVE:
+                    if (deleteGroup(groupToApply, handle)) {
+                        groupTranslator.forget(handle);
+                    }
+                    return;
+                default:
+                    log.error("Unknwon group operation type {}, cannot process group", operation);
+                    break;
+            }
+        } finally {
+            STRIPED_LOCKS.get(handle).unlock();
+        }
+    }
+
+    private boolean applyGroupWithMembersOrNothing(PiActionGroup group, PiActionGroupHandle handle) {
+        // First apply members, then group, if fails, delete members.
+        if (!applyAllMembersOrNothing(group.members())) {
+            return false;
+        }
+        if (!applyGroup(group, handle)) {
+            deleteMembers(group.members());
+            return false;
+        }
+        return true;
+    }
+
+    private boolean applyGroup(PiActionGroup group, PiActionGroupHandle handle) {
+        final P4RuntimeClient.WriteOperationType opType =
+                groupMirror.get(handle) == null ? INSERT : MODIFY;
+        final boolean success = getFutureWithDeadline(
+                client.writeActionGroup(group, opType, pipeconf),
+                "performing action profile group " + opType, false);
+        if (success) {
+            groupMirror.put(handle, group);
+        }
+        return success;
+    }
+
+    private boolean deleteGroup(PiActionGroup group, PiActionGroupHandle handle) {
+        final boolean success = getFutureWithDeadline(
+                client.writeActionGroup(group, DELETE, pipeconf),
+                "performing action profile group " + DELETE, false);
+        if (success) {
+            groupMirror.remove(handle);
+        }
+        return success;
+    }
+
+    private boolean applyAllMembersOrNothing(Collection<PiActionGroupMember> members) {
+        Collection<PiActionGroupMember> appliedMembers = applyMembers(members);
+        if (appliedMembers.size() == members.size()) {
+            return true;
+        } else {
+            deleteMembers(appliedMembers);
+            return false;
+        }
+    }
+
+    private Collection<PiActionGroupMember> applyMembers(
+            Collection<PiActionGroupMember> members) {
+        return members.stream()
+                .filter(this::applyMember)
+                .collect(Collectors.toList());
+    }
+
+    private boolean applyMember(PiActionGroupMember member) {
+        // If exists, modify, otherwise insert
+        final PiActionGroupMemberHandle handle = PiActionGroupMemberHandle.of(
+                deviceId, member);
+        final P4RuntimeClient.WriteOperationType opType =
+                memberMirror.get(handle) == null ? INSERT : MODIFY;
+        final boolean success = getFutureWithDeadline(
+                client.writeActionGroupMembers(Collections.singletonList(member),
+                                               opType, pipeconf),
+                "performing action profile member " + opType, false);
+        if (success) {
+            memberMirror.put(handle, dummyMember(member.actionProfile(), member.id()));
+        }
+        return success;
+    }
+
+    private void deleteMembers(Collection<PiActionGroupMember> members) {
+        members.forEach(this::deleteMember);
+    }
+
+    private void deleteMember(PiActionGroupMember member) {
+        final PiActionGroupMemberHandle handle = PiActionGroupMemberHandle.of(
+                deviceId, member);
+        final boolean success = getFutureWithDeadline(
+                client.writeActionGroupMembers(Collections.singletonList(member),
+                                               DELETE, pipeconf),
+                "performing action profile member " + DELETE, false);
+        if (success) {
+            memberMirror.remove(handle);
+        }
+    }
+
+    // FIXME: this is nasty, we have to rely on a dummy member of the mirror
+    // because the PiActionGroupMember abstraction is broken, since it includes
+    // attributes that are not part of a P4Runtime member, e.g. weight.
+    // We should remove weight from the class, and have client methods that
+    // return the full PiActionGroupMember, not just the IDs. Also the naming
+    // "ActionGroupMember" is wrong since it makes believe that members can
+    // exists only inside a group, which is not true.
+    private PiActionGroupMember dummyMember(
+            PiActionProfileId actionProfileId, PiActionGroupMemberId memberId) {
+        return PiActionGroupMember.builder()
+                .forActionProfile(actionProfileId)
+                .withId(memberId)
+                .withAction(PiAction.builder()
+                                    .withId(PiActionId.of("dummy"))
+                                    .build())
+                .build();
+    }
+
+    enum Operation {
+        APPLY, REMOVE
+    }
+}
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeFlowRuleProgrammable.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeFlowRuleProgrammable.java
index 85a87fe..d0acdee 100644
--- a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeFlowRuleProgrammable.java
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeFlowRuleProgrammable.java
@@ -140,6 +140,11 @@
                 streamEntries(), streamDefaultEntries())
                 // Ignore entries from constant tables.
                 .filter(e -> !tableIsConstant(e.table()))
+                // Device implementation might return duplicate entries. For
+                // example if reading only default ones is not supported and
+                // non-default entries are returned, by using distinct() we are
+                // robust against that possibility.
+                .distinct()
                 .collect(Collectors.toList());
 
         if (deviceEntries.isEmpty()) {
@@ -148,7 +153,6 @@
 
         // Synchronize mirror with the device state.
         syncMirror(deviceEntries);
-        // Read table direct counters for non default-entries (if any).
         // TODO: ONOS-7596 read counters with table entries
         final Map<PiTableEntry, PiCounterCellData> counterCellMap =
                 readEntryCounters(deviceEntries);
@@ -229,7 +233,12 @@
             log.warn("Table entry handle not found in translation store: {}", handle);
             return null;
         }
-
+        if (!translatedEntity.get().translated().equals(entry)) {
+            log.warn("Table entry obtained from device {} is different from " +
+                             "one in in translation store: device={}, store={}",
+                     deviceId, entry, translatedEntity.get().translated());
+            return null;
+        }
         if (timedEntry == null) {
             log.warn("Table entry handle not found in device mirror: {}", handle);
             return null;
@@ -460,6 +469,7 @@
             cellDatas = Collections.emptyList();
         } else {
             Set<PiCounterCellId> cellIds = tableEntries.stream()
+                    // Ignore counter for default entry.
                     .filter(e -> !e.isDefaultAction())
                     .filter(e -> tableHasCounter(e.table()))
                     .map(PiCounterCellId::ofDirect)
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeGroupProgrammable.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeGroupProgrammable.java
index f53dca8..84678dc 100644
--- a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeGroupProgrammable.java
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeGroupProgrammable.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-present Open Networking Foundation
+ * Copyright 2018-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.
@@ -18,545 +18,92 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
-import com.google.common.collect.Sets;
-import com.google.common.util.concurrent.Striped;
-import org.onlab.util.SharedExecutors;
-import org.onosproject.drivers.p4runtime.mirror.P4RuntimeGroupMirror;
-import org.onosproject.drivers.p4runtime.mirror.P4RuntimeMulticastGroupMirror;
-import org.onosproject.drivers.p4runtime.mirror.TimedEntry;
 import org.onosproject.net.DeviceId;
-import org.onosproject.net.group.DefaultGroup;
-import org.onosproject.net.group.DefaultGroupDescription;
+import org.onosproject.net.driver.AbstractHandlerBehaviour;
 import org.onosproject.net.group.Group;
 import org.onosproject.net.group.GroupDescription;
 import org.onosproject.net.group.GroupOperation;
 import org.onosproject.net.group.GroupOperations;
 import org.onosproject.net.group.GroupProgrammable;
-import org.onosproject.net.group.GroupStore;
-import org.onosproject.net.pi.model.PiActionProfileId;
-import org.onosproject.net.pi.model.PiActionProfileModel;
-import org.onosproject.net.pi.runtime.PiActionGroup;
-import org.onosproject.net.pi.runtime.PiActionGroupHandle;
-import org.onosproject.net.pi.runtime.PiActionGroupMember;
-import org.onosproject.net.pi.runtime.PiMulticastGroupEntry;
-import org.onosproject.net.pi.runtime.PiMulticastGroupEntryHandle;
-import org.onosproject.net.pi.service.PiGroupTranslator;
-import org.onosproject.net.pi.service.PiMulticastGroupTranslator;
-import org.onosproject.net.pi.service.PiTranslatedEntity;
-import org.onosproject.net.pi.service.PiTranslationException;
-import org.onosproject.p4runtime.api.P4RuntimeClient;
 import org.slf4j.Logger;
 
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
-import java.util.Objects;
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.locks.Lock;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
 import static com.google.common.base.Preconditions.checkArgument;
-import static java.lang.String.format;
-import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.DELETE;
-import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.INSERT;
-import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.MODIFY;
 import static org.slf4j.LoggerFactory.getLogger;
 
 /**
- * Implementation of the group programmable behaviour for P4Runtime.
- * <p>
- * This implementation distinguishes between ALL groups, and other types. ALL
- * groups are handled via PRE multicast group programming, while other types are
- * handled via action profile group programming.
+ * Implementation of GroupProgrammable for P4Runtime devices that uses two
+ * different implementation of the same behavior to handle both action profile
+ * groups and multicast groups.
  */
 public class P4RuntimeGroupProgrammable
-        extends AbstractP4RuntimeHandlerBehaviour
-        implements GroupProgrammable {
+        extends AbstractHandlerBehaviour implements GroupProgrammable {
 
-    private static final String ACT_GRP_MEMS_STR = "action group members";
-    private static final String DELETE_STR = "delete";
-    private static final String ACT_GRP_STR = "action group";
-    private static final String INSERT_STR = "insert";
-    private static final String MODIFY_STR = "modify";
+    private final Logger log = getLogger(this.getClass());
 
-    private static final Logger log = getLogger(P4RuntimeGroupProgrammable.class);
-
-    // If true, we ignore re-installing groups that are already known in the
-    // device mirror.
-    private static final String CHECK_MIRROR_BEFORE_UPDATE = "checkMirrorBeforeUpdate";
-    private static final boolean DEFAULT_CHECK_MIRROR_BEFORE_UPDATE = true;
-
-    // If true, we avoid querying the device and return what's already known by
-    // the ONOS store.
-    private static final String READ_ACTION_GROUPS_FROM_MIRROR = "actionGroupReadFromMirror";
-    private static final boolean DEFAULT_READ_ACTION_GROUPS_FROM_MIRROR = false;
-
-    protected GroupStore groupStore;
-    private P4RuntimeGroupMirror groupMirror;
-    private PiGroupTranslator groupTranslator;
-    private P4RuntimeMulticastGroupMirror mcGroupMirror;
-    private PiMulticastGroupTranslator mcGroupTranslator;
-
-    // Needed to synchronize operations over the same group.
-    private static final Striped<Lock> STRIPED_LOCKS = Striped.lock(30);
-
-    @Override
-    protected boolean setupBehaviour() {
-        if (!super.setupBehaviour()) {
-            return false;
+    private void doPerformGroupOperation(DeviceId deviceId, GroupOperations groupOps) {
+        // TODO: fix GroupProgrammable API, passing the device ID is ambiguous
+        checkArgument(deviceId.equals(data().deviceId()),
+                      "passed deviceId must be the same assigned to this behavior");
+        final List<GroupOperation> actionGroups = Lists.newArrayList();
+        final List<GroupOperation> multicastGroups = Lists.newArrayList();
+        groupOps.operations().forEach(op -> {
+            if (op.groupType().equals(GroupDescription.Type.ALL)) {
+                multicastGroups.add(op);
+            } else {
+                actionGroups.add(op);
+            }
+        });
+        if (!actionGroups.isEmpty()) {
+            actionProgrammable().performGroupOperation(
+                    deviceId, new GroupOperations(actionGroups));
         }
-        groupMirror = this.handler().get(P4RuntimeGroupMirror.class);
-        mcGroupMirror = this.handler().get(P4RuntimeMulticastGroupMirror.class);
-        groupStore = handler().get(GroupStore.class);
-        groupTranslator = piTranslationService.groupTranslator();
-        mcGroupTranslator = piTranslationService.multicastGroupTranslator();
-        return true;
+        if (!multicastGroups.isEmpty()) {
+            multicastProgrammable().performGroupOperation(
+                    deviceId, new GroupOperations(multicastGroups));
+        }
+    }
+
+    private Collection<Group> doGetGroups() {
+        return new ImmutableList.Builder<Group>()
+                .addAll(actionProgrammable().getGroups())
+                .addAll(multicastProgrammable().getGroups())
+                .build();
+    }
+
+    private P4RuntimeActionGroupProgrammable actionProgrammable() {
+        P4RuntimeActionGroupProgrammable prog = new P4RuntimeActionGroupProgrammable();
+        prog.setData(data());
+        prog.setHandler(handler());
+        return prog;
+    }
+
+    private P4RuntimeMulticastGroupProgrammable multicastProgrammable() {
+        P4RuntimeMulticastGroupProgrammable prog = new P4RuntimeMulticastGroupProgrammable();
+        prog.setData(data());
+        prog.setHandler(handler());
+        return prog;
     }
 
     @Override
-    public void performGroupOperation(DeviceId deviceId,
-                                      GroupOperations groupOps) {
-        if (!setupBehaviour()) {
-            return;
+    public void performGroupOperation(DeviceId deviceId, GroupOperations groupOps) {
+        try {
+            doPerformGroupOperation(deviceId, groupOps);
+        } catch (Throwable ex) {
+            log.error("Unhandled exception on performGroupOperation", ex);
         }
-
-        // TODO: fix GroupProgrammable API, passing the device ID is ambiguous
-        checkArgument(deviceId.equals(this.deviceId),
-                      "passed deviceId must be the same assigned to this behavior");
-
-        groupOps.operations().forEach(op -> {
-            // ONOS-7785 We need app cookie (action profile id) from the group
-            Group groupOnStore = groupStore.getGroup(deviceId, op.groupId());
-            GroupDescription groupDesc = new DefaultGroupDescription(deviceId,
-                                                                     op.groupType(),
-                                                                     op.buckets(),
-                                                                     groupOnStore.appCookie(),
-                                                                     op.groupId().id(),
-                                                                     groupOnStore.appId());
-            DefaultGroup groupToApply = new DefaultGroup(op.groupId(), groupDesc);
-            if (op.groupType().equals(GroupDescription.Type.ALL)) {
-                processMcGroupOp(groupToApply, op.opType());
-            } else {
-
-                processActionGroupOp(groupToApply, op.opType());
-            }
-        });
     }
 
     @Override
     public Collection<Group> getGroups() {
-        if (!setupBehaviour()) {
+        try {
+            return doGetGroups();
+        } catch (Throwable ex) {
+            log.error("Unhandled exception on getGroups", ex);
             return Collections.emptyList();
         }
-        return new ImmutableList.Builder<Group>()
-                .addAll(getActionGroups())
-                .addAll(getMcGroups()).build();
-    }
-
-    private Collection<Group> getActionGroups() {
-
-        if (driverBoolProperty(READ_ACTION_GROUPS_FROM_MIRROR,
-                               DEFAULT_READ_ACTION_GROUPS_FROM_MIRROR)) {
-            return getActionGroupsFromMirror();
-        }
-
-        final Collection<PiActionGroup> piGroups = pipeconf.pipelineModel()
-                .actionProfiles()
-                .stream()
-                .map(PiActionProfileModel::id)
-                .flatMap(this::streamPiGroupsFromDevice)
-                .collect(Collectors.toList());
-
-        if (piGroups.isEmpty()) {
-            return Collections.emptyList();
-        }
-
-        final List<Group> result = Lists.newArrayList();
-        final List<PiActionGroup> inconsistentGroups = Lists.newArrayList();
-
-        for (PiActionGroup piGroupOnDevice : piGroups) {
-            final Group group = forgeGroupEntry(piGroupOnDevice);
-            if (group == null) {
-                // Entry is on device but unknown to translation service or
-                // device mirror. Inconsistent. Mark for removal.
-                inconsistentGroups.add(piGroupOnDevice);
-            } else {
-                result.add(group);
-            }
-        }
-        // Trigger clean up of inconsistent entries (is any).
-        // TODO: make this behaviour configurable, in some cases it's fine for
-        // the device to have groups that were not installed by us.
-        if (!inconsistentGroups.isEmpty()) {
-            SharedExecutors.getSingleThreadExecutor().execute(
-                    () -> cleanUpInconsistentGroups(inconsistentGroups));
-        }
-        return result;
-    }
-
-    private Collection<Group> getActionGroupsFromMirror() {
-        return groupMirror.getAll(deviceId).stream()
-                .map(TimedEntry::entry)
-                .map(this::forgeGroupEntry)
-                .filter(Objects::nonNull)
-                .collect(Collectors.toList());
-    }
-
-    private void cleanUpInconsistentGroups(Collection<PiActionGroup> piGroups) {
-        log.warn("Found {} inconsistent groups on {}, removing them...",
-                 piGroups.size(), deviceId);
-        piGroups.forEach(piGroup -> {
-            log.debug(piGroup.toString());
-            // Per-piGroup lock.
-            final PiActionGroupHandle handle = PiActionGroupHandle.of(deviceId, piGroup);
-            STRIPED_LOCKS.get(handle).lock();
-            try {
-                processActionGroup(handle, piGroup, null, null,
-                                   GroupOperation.Type.DELETE);
-            } finally {
-                STRIPED_LOCKS.get(handle).unlock();
-            }
-        });
-    }
-
-    private Collection<Group> getMcGroups() {
-        // TODO: missing support for reading multicast groups is ready in PI/Stratum.
-        return getMcGroupsFromMirror();
-    }
-
-    private Collection<Group> getMcGroupsFromMirror() {
-        return mcGroupMirror.getAll(deviceId).stream()
-                .map(TimedEntry::entry)
-                .map(this::forgeMcGroupEntry)
-                .filter(Objects::nonNull)
-                .collect(Collectors.toList());
-    }
-
-    private void processActionGroupOp(Group pdGroup, GroupOperation.Type opType) {
-        final PiActionGroup piGroup;
-        try {
-            piGroup = groupTranslator.translate(pdGroup, pipeconf);
-        } catch (PiTranslationException e) {
-            log.warn("Unable to translate group, aborting {} operation: {} [{}]",
-                     opType, e.getMessage(), pdGroup);
-            return;
-        }
-        final PiActionGroupHandle handle = PiActionGroupHandle.of(deviceId, piGroup);
-        final PiActionGroup groupOnDevice = groupMirror.get(handle) == null
-                ? null : groupMirror.get(handle).entry();
-        // Per-piGroup lock.
-        final Lock lock = STRIPED_LOCKS.get(handle);
-        lock.lock();
-        try {
-            processActionGroup(handle, piGroup,
-                               groupOnDevice, pdGroup, opType);
-        } finally {
-            lock.unlock();
-        }
-    }
-
-    private void processMcGroupOp(Group pdGroup, GroupOperation.Type opType) {
-        final PiMulticastGroupEntry mcGroup;
-        try {
-            mcGroup = mcGroupTranslator.translate(pdGroup, pipeconf);
-        } catch (PiTranslationException e) {
-            log.warn("Unable to translate multicast group, aborting {} operation: {} [{}]",
-                     opType, e.getMessage(), pdGroup);
-            return;
-        }
-        final PiMulticastGroupEntryHandle handle = PiMulticastGroupEntryHandle.of(
-                deviceId, mcGroup);
-        final PiMulticastGroupEntry groupOnDevice = mcGroupMirror.get(handle) == null
-                ? null
-                : mcGroupMirror.get(handle).entry();
-        final Lock lock = STRIPED_LOCKS.get(handle);
-        lock.lock();
-        try {
-            processMcGroup(handle, mcGroup,
-                           groupOnDevice, pdGroup, opType);
-        } finally {
-            lock.unlock();
-        }
-    }
-
-    private void processActionGroup(PiActionGroupHandle handle,
-                                    PiActionGroup groupToApply,
-                                    PiActionGroup groupOnDevice,
-                                    Group pdGroup, GroupOperation.Type operationType) {
-        switch (operationType) {
-            case ADD:
-                if (groupOnDevice != null) {
-                    log.warn("Requested to ADD group {} on {}, but a group " +
-                                     "with the same ID already exists, will " +
-                                     "MODIFY instead",
-                             groupToApply.id(), deviceId);
-                    log.debug("To apply: {}", groupToApply);
-                    log.debug("On device: {}", groupOnDevice);
-                    processActionGroup(handle, groupToApply, groupOnDevice,
-                                       pdGroup, GroupOperation.Type.MODIFY);
-                    return;
-                }
-                if (writeGroupToDevice(groupToApply)) {
-                    groupMirror.put(handle, groupToApply);
-                    groupTranslator.learn(handle, new PiTranslatedEntity<>(
-                            pdGroup, groupToApply, handle));
-                }
-                return;
-            case MODIFY:
-                if (groupOnDevice == null) {
-                    log.warn("Requested to MODIFY group {} on {}, but no " +
-                                     "such group exists on the device, " +
-                                     "will ADD instead",
-                             groupToApply.id(), deviceId);
-                    processActionGroup(handle, groupToApply, null,
-                                       pdGroup, GroupOperation.Type.ADD);
-                    return;
-                }
-                if (driverBoolProperty(CHECK_MIRROR_BEFORE_UPDATE,
-                                       DEFAULT_CHECK_MIRROR_BEFORE_UPDATE)
-                        && groupOnDevice.equals(groupToApply)) {
-                    // Group on device has the same members, ignore operation.
-                    return;
-                }
-                if (modifyGroupFromDevice(groupToApply, groupOnDevice)) {
-                    groupMirror.put(handle, groupToApply);
-                    groupTranslator.learn(handle, new PiTranslatedEntity<>(
-                            pdGroup, groupToApply, handle));
-                }
-                return;
-            case DELETE:
-                if (deleteGroupFromDevice(groupToApply)) {
-                    groupMirror.remove(handle);
-                    groupTranslator.forget(handle);
-                }
-                break;
-            default:
-                log.error("Unknwon group operation type {}, cannot process group", operationType);
-                break;
-        }
-    }
-
-    private void processMcGroup(PiMulticastGroupEntryHandle handle,
-                                PiMulticastGroupEntry groupToApply,
-                                PiMulticastGroupEntry groupOnDevice,
-                                Group pdGroup, GroupOperation.Type opType) {
-        switch (opType) {
-            case ADD:
-                robustMcGroupAdd(handle, groupToApply, pdGroup);
-                return;
-            case MODIFY:
-                // Since reading multicast groups is not supported yet on
-                // PI/Stratum, we cannot trust groupOnDevic) as we don't have a
-                // mechanism to enforce consistency of the mirror with the
-                // device state.
-                // if (driverBoolProperty(CHECK_MIRROR_BEFORE_UPDATE,
-                //                        DEFAULT_CHECK_MIRROR_BEFORE_UPDATE)
-                //         && p4OpType == MODIFY
-                //         && groupOnDevice != null
-                //         && groupOnDevice.equals(groupToApply)) {
-                //     // Ignore.
-                //     return;
-                // }
-                robustMcGroupModify(handle, groupToApply, pdGroup);
-                return;
-            case DELETE:
-                mcGroupApply(handle, groupToApply, pdGroup, DELETE);
-                return;
-            default:
-                log.error("Unknown group operation type {}, " +
-                                  "cannot process multicast group", opType);
-        }
-    }
-
-    private boolean writeMcGroupOnDevice(PiMulticastGroupEntry group, P4RuntimeClient.WriteOperationType opType) {
-        return getFutureWithDeadline(
-                client.writePreMulticastGroupEntries(
-                        Collections.singleton(group), opType),
-                "performing multicast group " + opType, false);
-    }
-
-    private boolean mcGroupApply(PiMulticastGroupEntryHandle handle,
-                                 PiMulticastGroupEntry piGroup,
-                                 Group pdGroup,
-                                 P4RuntimeClient.WriteOperationType opType) {
-        switch (opType) {
-            case DELETE:
-                if (writeMcGroupOnDevice(piGroup, DELETE)) {
-                    mcGroupMirror.remove(handle);
-                    mcGroupTranslator.forget(handle);
-                    return true;
-                } else {
-                    return false;
-                }
-            case INSERT:
-            case MODIFY:
-                if (writeMcGroupOnDevice(piGroup, opType)) {
-                    mcGroupMirror.put(handle, piGroup);
-                    mcGroupTranslator.learn(handle, new PiTranslatedEntity<>(
-                            pdGroup, piGroup, handle));
-                    return true;
-                } else {
-                    return false;
-                }
-            default:
-                log.warn("Unknown operation type {}, cannot apply group", opType);
-                return false;
-        }
-    }
-
-    private void robustMcGroupAdd(PiMulticastGroupEntryHandle handle,
-                                  PiMulticastGroupEntry piGroup,
-                                  Group pdGroup) {
-        if (mcGroupApply(handle, piGroup, pdGroup, INSERT)) {
-            return;
-        }
-        // Try to delete (perhaps it already exists) and re-add...
-        mcGroupApply(handle, piGroup, pdGroup, DELETE);
-        mcGroupApply(handle, piGroup, pdGroup, INSERT);
-    }
-
-    private void robustMcGroupModify(PiMulticastGroupEntryHandle handle,
-                                     PiMulticastGroupEntry piGroup,
-                                     Group pdGroup) {
-        if (mcGroupApply(handle, piGroup, pdGroup, MODIFY)) {
-            return;
-        }
-        // Not sure for which reason it cannot be modified, so try to delete and insert instead...
-        mcGroupApply(handle, piGroup, pdGroup, DELETE);
-        mcGroupApply(handle, piGroup, pdGroup, INSERT);
-    }
-
-    private boolean modifyGroupFromDevice(PiActionGroup groupToApply, PiActionGroup groupOnDevice) {
-        PiActionProfileId groupProfileId = groupToApply.actionProfileId();
-        Collection<PiActionGroupMember> membersToRemove = Sets.newHashSet(groupOnDevice.members());
-        membersToRemove.removeAll(groupToApply.members());
-        Collection<PiActionGroupMember> membersToAdd = Sets.newHashSet(groupToApply.members());
-        membersToAdd.removeAll(groupOnDevice.members());
-
-        if (!membersToAdd.isEmpty() &&
-                !completeFuture(client.writeActionGroupMembers(groupProfileId, membersToAdd, INSERT, pipeconf),
-                                ACT_GRP_MEMS_STR, INSERT_STR)) {
-            // remove what we added
-            completeFuture(client.writeActionGroupMembers(groupProfileId, membersToAdd, DELETE, pipeconf),
-                           ACT_GRP_MEMS_STR, INSERT_STR);
-            return false;
-        }
-
-        if (!completeFuture(client.writeActionGroup(groupToApply, MODIFY, pipeconf),
-                            ACT_GRP_STR, MODIFY_STR)) {
-            // recover group information
-            completeFuture(client.writeActionGroup(groupOnDevice, MODIFY, pipeconf),
-                           ACT_GRP_STR, MODIFY_STR);
-            // remove what we added
-            completeFuture(client.writeActionGroupMembers(groupProfileId, membersToAdd, DELETE, pipeconf),
-                           ACT_GRP_MEMS_STR, INSERT_STR);
-            return false;
-        }
-
-        if (!membersToRemove.isEmpty() &&
-                !completeFuture(client.writeActionGroupMembers(groupProfileId, membersToRemove, DELETE, pipeconf),
-                                ACT_GRP_MEMS_STR, DELETE_STR)) {
-            // add what we removed
-            completeFuture(client.writeActionGroupMembers(groupProfileId, membersToRemove, INSERT, pipeconf),
-                           ACT_GRP_MEMS_STR, DELETE_STR);
-            // recover group information
-            completeFuture(client.writeActionGroup(groupOnDevice, MODIFY, pipeconf),
-                           ACT_GRP_STR, MODIFY_STR);
-            // remove what we added
-            completeFuture(client.writeActionGroupMembers(groupProfileId, membersToAdd, DELETE, pipeconf),
-                           ACT_GRP_MEMS_STR, INSERT_STR);
-            return false;
-        }
-
-        return true;
-    }
-
-    private boolean writeGroupToDevice(PiActionGroup groupToApply) {
-        // First insert members, then group.
-        // The operation is deemed successful if both operations are successful.
-        // FIXME: add transactional semantics, i.e. remove members if group fails.
-        final boolean membersSuccess = completeFuture(
-                client.writeActionGroupMembers(groupToApply.actionProfileId(),
-                                               groupToApply.members(),
-                                               INSERT, pipeconf),
-                ACT_GRP_MEMS_STR, INSERT_STR);
-        return membersSuccess && completeFuture(
-                client.writeActionGroup(groupToApply, INSERT, pipeconf),
-                ACT_GRP_STR, INSERT_STR);
-    }
-
-    private boolean deleteGroupFromDevice(PiActionGroup piActionGroup) {
-        // First delete group, then members.
-        // The operation is deemed successful if both operations are successful.
-        final boolean groupSuccess = completeFuture(
-                client.writeActionGroup(piActionGroup, DELETE, pipeconf),
-                ACT_GRP_STR, DELETE_STR);
-        return groupSuccess && completeFuture(
-                client.writeActionGroupMembers(piActionGroup.actionProfileId(),
-                                               piActionGroup.members(),
-                                               DELETE, pipeconf),
-                ACT_GRP_MEMS_STR, DELETE_STR);
-    }
-
-    private boolean completeFuture(CompletableFuture<Boolean> completableFuture,
-                                   String topic, String action) {
-        return getFutureWithDeadline(
-                completableFuture, format("performing %s %s", action, topic), false);
-    }
-
-    private Stream<PiActionGroup> streamPiGroupsFromDevice(PiActionProfileId actProfId) {
-        // Read PI groups and return original PD one.
-        // TODO: implement P4Runtime client call to read all groups with one call
-        // Good is pipeline has multiple action profiles.
-        final Collection<PiActionGroup> groups = getFutureWithDeadline(
-                client.dumpGroups(actProfId, pipeconf),
-                "dumping groups", Collections.emptyList());
-        return groups.stream();
-    }
-
-    private Group forgeGroupEntry(PiActionGroup piGroup) {
-        final PiActionGroupHandle handle = PiActionGroupHandle.of(deviceId, piGroup);
-        final Optional<PiTranslatedEntity<Group, PiActionGroup>>
-                translatedEntity = groupTranslator.lookup(handle);
-        final TimedEntry<PiActionGroup> timedEntry = groupMirror.get(handle);
-        // Is entry consistent with our state?
-        if (!translatedEntity.isPresent()) {
-            log.warn("Group handle not found in translation store: {}", handle);
-            return null;
-        }
-        if (timedEntry == null) {
-            // Don't bother logging more than debug, most probably it's the EC
-            // map backing the store that has not received all the updates yet.
-            log.debug("Group handle not found in device mirror: {}", handle);
-            return null;
-        }
-        return addedGroup(translatedEntity.get().original(), timedEntry.lifeSec());
-    }
-
-    private Group forgeMcGroupEntry(PiMulticastGroupEntry mcGroup) {
-        final PiMulticastGroupEntryHandle handle = PiMulticastGroupEntryHandle.of(
-                deviceId, mcGroup);
-        final Optional<PiTranslatedEntity<Group, PiMulticastGroupEntry>>
-                translatedEntity = mcGroupTranslator.lookup(handle);
-        final TimedEntry<PiMulticastGroupEntry> timedEntry = mcGroupMirror.get(handle);
-        // Is entry consistent with our state?
-        if (!translatedEntity.isPresent()) {
-            log.warn("Multicast group handle not found in translation store: {}", handle);
-            return null;
-        }
-        if (timedEntry == null) {
-            log.warn("Multicast group handle not found in device mirror: {}", handle);
-            return null;
-        }
-        return addedGroup(translatedEntity.get().original(), timedEntry.lifeSec());
-    }
-
-    private Group addedGroup(Group original, long life) {
-        final DefaultGroup forgedGroup = new DefaultGroup(original.id(), original);
-        forgedGroup.setState(Group.GroupState.ADDED);
-        forgedGroup.setLife(life);
-        return forgedGroup;
     }
 }
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeMulticastGroupProgrammable.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeMulticastGroupProgrammable.java
new file mode 100644
index 0000000..a5c3538
--- /dev/null
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/P4RuntimeMulticastGroupProgrammable.java
@@ -0,0 +1,246 @@
+/*
+ * Copyright 2018-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.drivers.p4runtime;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.util.concurrent.Striped;
+import org.onosproject.drivers.p4runtime.mirror.P4RuntimeMulticastGroupMirror;
+import org.onosproject.drivers.p4runtime.mirror.TimedEntry;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.group.DefaultGroup;
+import org.onosproject.net.group.Group;
+import org.onosproject.net.group.GroupDescription;
+import org.onosproject.net.group.GroupOperation;
+import org.onosproject.net.group.GroupOperations;
+import org.onosproject.net.group.GroupProgrammable;
+import org.onosproject.net.group.GroupStore;
+import org.onosproject.net.pi.runtime.PiMulticastGroupEntry;
+import org.onosproject.net.pi.runtime.PiMulticastGroupEntryHandle;
+import org.onosproject.net.pi.service.PiMulticastGroupTranslator;
+import org.onosproject.net.pi.service.PiTranslatedEntity;
+import org.onosproject.net.pi.service.PiTranslationException;
+import org.onosproject.p4runtime.api.P4RuntimeClient;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.concurrent.locks.Lock;
+import java.util.stream.Collectors;
+
+import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.DELETE;
+import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.INSERT;
+import static org.onosproject.p4runtime.api.P4RuntimeClient.WriteOperationType.MODIFY;
+
+/**
+ * Implementation of GroupProgrammable to handle multicast groups in P4Runtime.
+ */
+public class P4RuntimeMulticastGroupProgrammable
+        extends AbstractP4RuntimeHandlerBehaviour implements GroupProgrammable {
+
+    // Needed to synchronize operations over the same group.
+    private static final Striped<Lock> STRIPED_LOCKS = Striped.lock(30);
+
+    private GroupStore groupStore;
+    private P4RuntimeMulticastGroupMirror mcGroupMirror;
+    private PiMulticastGroupTranslator mcGroupTranslator;
+
+    @Override
+    protected boolean setupBehaviour() {
+        if (!super.setupBehaviour()) {
+            return false;
+        }
+        mcGroupMirror = this.handler().get(P4RuntimeMulticastGroupMirror.class);
+        groupStore = handler().get(GroupStore.class);
+        mcGroupTranslator = piTranslationService.multicastGroupTranslator();
+        return true;
+    }
+
+    @Override
+    public void performGroupOperation(DeviceId deviceId, GroupOperations groupOps) {
+        if (!setupBehaviour()) {
+            return;
+        }
+        groupOps.operations().stream()
+                .filter(op -> op.groupType().equals(GroupDescription.Type.ALL))
+                .forEach(op -> {
+                    final Group group = groupStore.getGroup(deviceId, op.groupId());
+                    processMcGroupOp(group, op.opType());
+                });
+    }
+
+    @Override
+    public Collection<Group> getGroups() {
+        if (!setupBehaviour()) {
+            return Collections.emptyList();
+        }
+        return ImmutableList.copyOf(getMcGroups());
+    }
+
+    private Collection<Group> getMcGroups() {
+        // TODO: missing support for reading multicast groups is ready in PI/Stratum.
+        return getMcGroupsFromMirror();
+    }
+
+    private Collection<Group> getMcGroupsFromMirror() {
+        return mcGroupMirror.getAll(deviceId).stream()
+                .map(TimedEntry::entry)
+                .map(this::forgeMcGroupEntry)
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+    }
+
+    private void processMcGroupOp(Group pdGroup, GroupOperation.Type opType) {
+        final PiMulticastGroupEntry mcGroup;
+        try {
+            mcGroup = mcGroupTranslator.translate(pdGroup, pipeconf);
+        } catch (PiTranslationException e) {
+            log.warn("Unable to translate multicast group, aborting {} operation: {} [{}]",
+                     opType, e.getMessage(), pdGroup);
+            return;
+        }
+        final PiMulticastGroupEntryHandle handle = PiMulticastGroupEntryHandle.of(
+                deviceId, mcGroup);
+        final PiMulticastGroupEntry groupOnDevice = mcGroupMirror.get(handle) == null
+                ? null
+                : mcGroupMirror.get(handle).entry();
+        final Lock lock = STRIPED_LOCKS.get(handle);
+        lock.lock();
+        try {
+            processMcGroup(handle, mcGroup,
+                           groupOnDevice, pdGroup, opType);
+        } finally {
+            lock.unlock();
+        }
+    }
+
+    private void processMcGroup(PiMulticastGroupEntryHandle handle,
+                                PiMulticastGroupEntry groupToApply,
+                                PiMulticastGroupEntry groupOnDevice,
+                                Group pdGroup, GroupOperation.Type opType) {
+        switch (opType) {
+            case ADD:
+                robustMcGroupAdd(handle, groupToApply, pdGroup);
+                return;
+            case MODIFY:
+                // Since reading multicast groups is not supported yet on
+                // PI/Stratum, we cannot trust groupOnDevic) as we don't have a
+                // mechanism to enforce consistency of the mirror with the
+                // device state.
+                // if (driverBoolProperty(CHECK_MIRROR_BEFORE_UPDATE,
+                //                        DEFAULT_CHECK_MIRROR_BEFORE_UPDATE)
+                //         && p4OpType == MODIFY
+                //         && groupOnDevice != null
+                //         && groupOnDevice.equals(groupToApply)) {
+                //     // Ignore.
+                //     return;
+                // }
+                robustMcGroupModify(handle, groupToApply, pdGroup);
+                return;
+            case DELETE:
+                mcGroupApply(handle, groupToApply, pdGroup, DELETE);
+                return;
+            default:
+                log.error("Unknown group operation type {}, " +
+                                  "cannot process multicast group", opType);
+        }
+    }
+
+    private boolean writeMcGroupOnDevice(PiMulticastGroupEntry group, P4RuntimeClient.WriteOperationType opType) {
+        return getFutureWithDeadline(
+                client.writePreMulticastGroupEntries(
+                        Collections.singletonList(group), opType),
+                "performing multicast group " + opType, false);
+    }
+
+    private boolean mcGroupApply(PiMulticastGroupEntryHandle handle,
+                                 PiMulticastGroupEntry piGroup,
+                                 Group pdGroup,
+                                 P4RuntimeClient.WriteOperationType opType) {
+        switch (opType) {
+            case DELETE:
+                if (writeMcGroupOnDevice(piGroup, DELETE)) {
+                    mcGroupMirror.remove(handle);
+                    mcGroupTranslator.forget(handle);
+                    return true;
+                } else {
+                    return false;
+                }
+            case INSERT:
+            case MODIFY:
+                if (writeMcGroupOnDevice(piGroup, opType)) {
+                    mcGroupMirror.put(handle, piGroup);
+                    mcGroupTranslator.learn(handle, new PiTranslatedEntity<>(
+                            pdGroup, piGroup, handle));
+                    return true;
+                } else {
+                    return false;
+                }
+            default:
+                log.warn("Unknown operation type {}, cannot apply group", opType);
+                return false;
+        }
+    }
+
+    private void robustMcGroupAdd(PiMulticastGroupEntryHandle handle,
+                                  PiMulticastGroupEntry piGroup,
+                                  Group pdGroup) {
+        if (mcGroupApply(handle, piGroup, pdGroup, INSERT)) {
+            return;
+        }
+        // Try to delete (perhaps it already exists) and re-add...
+        mcGroupApply(handle, piGroup, pdGroup, DELETE);
+        mcGroupApply(handle, piGroup, pdGroup, INSERT);
+    }
+
+    private void robustMcGroupModify(PiMulticastGroupEntryHandle handle,
+                                     PiMulticastGroupEntry piGroup,
+                                     Group pdGroup) {
+        if (mcGroupApply(handle, piGroup, pdGroup, MODIFY)) {
+            return;
+        }
+        // Not sure for which reason it cannot be modified, so try to delete and insert instead...
+        mcGroupApply(handle, piGroup, pdGroup, DELETE);
+        mcGroupApply(handle, piGroup, pdGroup, INSERT);
+    }
+
+    private Group forgeMcGroupEntry(PiMulticastGroupEntry mcGroup) {
+        final PiMulticastGroupEntryHandle handle = PiMulticastGroupEntryHandle.of(
+                deviceId, mcGroup);
+        final Optional<PiTranslatedEntity<Group, PiMulticastGroupEntry>>
+                translatedEntity = mcGroupTranslator.lookup(handle);
+        final TimedEntry<PiMulticastGroupEntry> timedEntry = mcGroupMirror.get(handle);
+        // Is entry consistent with our state?
+        if (!translatedEntity.isPresent()) {
+            log.warn("Multicast group handle not found in translation store: {}", handle);
+            return null;
+        }
+        if (timedEntry == null) {
+            log.warn("Multicast group handle not found in device mirror: {}", handle);
+            return null;
+        }
+        return addedGroup(translatedEntity.get().original(), timedEntry.lifeSec());
+    }
+
+    private Group addedGroup(Group original, long life) {
+        final DefaultGroup forgedGroup = new DefaultGroup(original.id(), original);
+        forgedGroup.setState(Group.GroupState.ADDED);
+        forgedGroup.setLife(life);
+        return forgedGroup;
+    }
+
+}
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java
index c5eb4c0..9230547 100644
--- a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/AbstractDistributedP4RuntimeMirror.java
@@ -17,6 +17,7 @@
 package org.onosproject.drivers.p4runtime.mirror;
 
 import com.google.common.annotations.Beta;
+import com.google.common.collect.Maps;
 import org.apache.felix.scr.annotations.Activate;
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Deactivate;
@@ -136,41 +137,54 @@
     @Override
     public void sync(DeviceId deviceId, Map<H, E> deviceState) {
         checkNotNull(deviceId);
-        Set<Map.Entry<H, TimedEntry<E>>> localEntries = getEntriesForDevice(deviceId);
+        final Map<H, E> localState = getMirrorMapForDevice(deviceId);
+
         final AtomicInteger removeCount = new AtomicInteger(0);
         final AtomicInteger updateCount = new AtomicInteger(0);
-        localEntries.forEach(e -> {
-            final H handle = e.getKey();
-            final E storedValue = e.getValue().entry();
-            if (!deviceState.containsKey(handle)) {
-                log.debug("Removing mirror entry for {}: {}", deviceId, storedValue);
+        final AtomicInteger addCount = new AtomicInteger(0);
+        // Add missing entries.
+        deviceState.keySet().stream()
+                .filter(deviceHandle -> !localState.containsKey(deviceHandle))
+                .forEach(deviceHandle -> {
+                    final E entryToAdd = deviceState.get(deviceHandle);
+                    log.debug("Adding mirror entry for {}: {}",
+                              deviceId, entryToAdd);
+                    put(deviceHandle, entryToAdd);
+                    addCount.incrementAndGet();
+                });
+        // Update or remove local entries.
+        localState.keySet().forEach(localHandle -> {
+            final E localEntry = localState.get(localHandle);
+            final E deviceEntry = deviceState.get(localHandle);
+            if (deviceEntry == null) {
+                log.debug("Removing mirror entry for {}: {}", deviceId, localEntry);
+                remove(localHandle);
                 removeCount.incrementAndGet();
-            } else {
-                final E deviceValue = deviceState.get(handle);
-                if (!deviceValue.equals(storedValue)) {
-                    log.debug("Updating mirror entry for {}: {}-->{}",
-                             deviceId, storedValue, deviceValue);
-                    put(handle, deviceValue);
-                    updateCount.incrementAndGet();
-                }
+            } else if (!deviceEntry.equals(localEntry)) {
+                log.debug("Updating mirror entry for {}: {}-->{}",
+                          deviceId, localEntry, deviceEntry);
+                put(localHandle, deviceEntry);
+                updateCount.incrementAndGet();
             }
         });
-        if (removeCount.get() + updateCount.get() > 0) {
-            log.info("Synchronized mirror entries for {}: {} removed, {} updated",
-                     deviceId, removeCount, updateCount);
+        if (removeCount.get() + updateCount.get() + addCount.get() > 0) {
+            log.info("Synchronized mirror entries for {}: {} removed, {} updated, {} added",
+                     deviceId, removeCount, updateCount, addCount);
         }
     }
 
-    private Collection<H> getHandlesForDevice(DeviceId deviceId) {
+    private Set<H> getHandlesForDevice(DeviceId deviceId) {
         return mirrorMap.keySet().stream()
                 .filter(h -> h.deviceId().equals(deviceId))
-                .collect(Collectors.toList());
+                .collect(Collectors.toSet());
     }
 
-    private Set<Map.Entry<H, TimedEntry<E>>> getEntriesForDevice(DeviceId deviceId) {
-        return mirrorMap.entrySet().stream()
+    private Map<H, E> getMirrorMapForDevice(DeviceId deviceId) {
+        final Map<H, E> deviceMap = Maps.newHashMap();
+        mirrorMap.entrySet().stream()
                 .filter(e -> e.getKey().deviceId().equals(deviceId))
-                .collect(Collectors.toSet());
+                .forEach(e -> deviceMap.put(e.getKey(), e.getValue().entry()));
+        return deviceMap;
     }
 
     private void removeAll(DeviceId deviceId) {
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/DistributedP4RuntimeActionProfileMemberMirror.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/DistributedP4RuntimeActionProfileMemberMirror.java
new file mode 100644
index 0000000..83edba4
--- /dev/null
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/DistributedP4RuntimeActionProfileMemberMirror.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-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.drivers.p4runtime.mirror;
+
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.net.pi.runtime.PiActionGroupMember;
+import org.onosproject.net.pi.runtime.PiActionGroupMemberHandle;
+import org.onosproject.store.serializers.KryoNamespaces;
+
+/**
+ * Distributed implementation of a P4Runtime action profile member mirror.
+ */
+@Component(immediate = true)
+@Service
+public class DistributedP4RuntimeActionProfileMemberMirror
+        extends AbstractDistributedP4RuntimeMirror
+        <PiActionGroupMemberHandle, PiActionGroupMember>
+        implements P4RuntimeActionProfileMemberMirror {
+
+    private static final String DIST_MAP_NAME = "onos-p4runtime-act-prof-member-mirror";
+
+    @Override
+    String mapName() {
+        return DIST_MAP_NAME;
+    }
+
+    @Override
+    KryoNamespace storeSerializer() {
+        return KryoNamespace.newBuilder()
+                .register(KryoNamespaces.API)
+                .register(TimedEntry.class)
+                .build();
+    }
+}
diff --git a/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/P4RuntimeActionProfileMemberMirror.java b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/P4RuntimeActionProfileMemberMirror.java
new file mode 100644
index 0000000..8ab1fa0
--- /dev/null
+++ b/drivers/p4runtime/src/main/java/org/onosproject/drivers/p4runtime/mirror/P4RuntimeActionProfileMemberMirror.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-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.drivers.p4runtime.mirror;
+
+import org.onosproject.net.pi.runtime.PiActionGroupMember;
+import org.onosproject.net.pi.runtime.PiActionGroupMemberHandle;
+
+/**
+ * Mirror of action profile members installed on a P4Runtime device.
+ */
+public interface P4RuntimeActionProfileMemberMirror
+        extends P4RuntimeMirror<PiActionGroupMemberHandle, PiActionGroupMember> {
+}