diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go
new file mode 100644
index 0000000..462b743
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/configmanager.go
@@ -0,0 +1,255 @@
+/*
+ * 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 config
+
+import (
+	"context"
+	"fmt"
+	"github.com/opencord/voltha-lib-go/v3/pkg/db"
+	"github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	"strings"
+)
+
+func init() {
+	_, err := log.AddPackage(log.JSON, log.FatalLevel, nil)
+	if err != nil {
+		log.Errorw("unable-to-register-package-to-the-log-map", log.Fields{"error": err})
+	}
+}
+
+const (
+	defaultkvStoreConfigPath = "config"
+	kvStoreDataPathPrefix    = "/service/voltha"
+	kvStorePathSeparator     = "/"
+)
+
+// ConfigType represents the type for which config is created inside the kvstore
+// For example, loglevel
+type ConfigType int
+
+const (
+	ConfigTypeLogLevel ConfigType = iota
+	ConfigTypeKafka
+)
+
+func (c ConfigType) String() string {
+	return [...]string{"loglevel", "kafka"}[c]
+}
+
+// ChangeEvent represents the event recieved from watch
+// For example, Put Event
+type ChangeEvent int
+
+const (
+	Put ChangeEvent = iota
+	Delete
+)
+
+// ConfigChangeEvent represents config for the events recieved from watch
+// For example,ChangeType is Put ,ConfigAttribute default
+type ConfigChangeEvent struct {
+	ChangeType      ChangeEvent
+	ConfigAttribute string
+}
+
+// ConfigManager is a wrapper over backend to maintain Configuration of voltha components
+// in kvstore based persistent storage
+type ConfigManager struct {
+	backend             *db.Backend
+	KvStoreConfigPrefix string
+}
+
+// ComponentConfig represents a category of configuration for a specific VOLTHA component type
+// stored in a persistent storage pointed to by Config Manager
+// For example, one ComponentConfig instance will be created for loglevel config type for rw-core
+// component while another ComponentConfig instance will refer to connection config type for same
+// rw-core component. So, there can be multiple ComponentConfig instance created per component
+// pointing to different category of configuration.
+//
+// Configuration pointed to be by ComponentConfig is stored in kvstore as a list of key/value pairs
+// under the hierarchical tree with following base path
+// <Backend Prefix Path>/<Config Prefix>/<Component Name>/<Config Type>/
+//
+// For example, rw-core ComponentConfig for loglevel config entries will be stored under following path
+// /voltha/service/config/rw-core/loglevel/
+type ComponentConfig struct {
+	cManager         *ConfigManager
+	componentLabel   string
+	configType       ConfigType
+	changeEventChan  chan *ConfigChangeEvent
+	kvStoreEventChan chan *kvstore.Event
+}
+
+func NewConfigManager(kvClient kvstore.Client, kvStoreType, kvStoreHost string, kvStorePort, kvStoreTimeout int) *ConfigManager {
+
+	return &ConfigManager{
+		KvStoreConfigPrefix: defaultkvStoreConfigPath,
+		backend: &db.Backend{
+			Client:     kvClient,
+			StoreType:  kvStoreType,
+			Host:       kvStoreHost,
+			Port:       kvStorePort,
+			Timeout:    kvStoreTimeout,
+			PathPrefix: kvStoreDataPathPrefix,
+		},
+	}
+}
+
+// RetrieveComponentList list the component Names for which loglevel is stored in kvstore
+func (c *ConfigManager) RetrieveComponentList(ctx context.Context, configType ConfigType) ([]string, error) {
+	data, err := c.backend.List(ctx, c.KvStoreConfigPrefix)
+	if err != nil {
+		return nil, err
+	}
+
+	// Looping through the data recieved from the backend for config
+	// Trimming and Splitting the required key and value from data and  storing as componentName,PackageName and Level
+	// For Example, recieved key would be <Backend Prefix Path>/<Config Prefix>/<Component Name>/<Config Type>/default and value \"DEBUG\"
+	// Then in default will be stored as PackageName,componentName as <Component Name> and DEBUG will be stored as value in List struct
+	ccPathPrefix := kvStorePathSeparator + configType.String() + kvStorePathSeparator
+	pathPrefix := kvStoreDataPathPrefix + kvStorePathSeparator + c.KvStoreConfigPrefix + kvStorePathSeparator
+	var list []string
+	keys := make(map[string]interface{})
+	for attr := range data {
+		cname := strings.TrimPrefix(attr, pathPrefix)
+		cName := strings.SplitN(cname, ccPathPrefix, 2)
+		if len(cName) != 2 {
+			continue
+		}
+		if _, exist := keys[cName[0]]; !exist {
+			keys[cName[0]] = nil
+			list = append(list, cName[0])
+		}
+	}
+	return list, nil
+}
+
+// Initialize the component config
+func (cm *ConfigManager) InitComponentConfig(componentLabel string, configType ConfigType) *ComponentConfig {
+
+	return &ComponentConfig{
+		componentLabel:   componentLabel,
+		configType:       configType,
+		cManager:         cm,
+		changeEventChan:  nil,
+		kvStoreEventChan: nil,
+	}
+
+}
+
+func (c *ComponentConfig) makeConfigPath() string {
+
+	cType := c.configType.String()
+	return c.cManager.KvStoreConfigPrefix + kvStorePathSeparator +
+		c.componentLabel + kvStorePathSeparator + cType
+}
+
+// MonitorForConfigChange watch on the subkeys for the given key
+// Any changes to the subkeys for the given key will return an event channel
+// Then Event channel will be processed and  new event channel with required values will be created and return
+// For example, rw-core will be watching on <Backend Prefix Path>/<Config Prefix>/<Component Name>/<Config Type>/
+// will return an event channel for PUT,DELETE eventType.
+// Then values from event channel will be processed and  stored in kvStoreEventChan.
+func (c *ComponentConfig) MonitorForConfigChange(ctx context.Context) chan *ConfigChangeEvent {
+	key := c.makeConfigPath()
+
+	log.Debugw("monitoring-for-config-change", log.Fields{"key": key})
+
+	c.changeEventChan = make(chan *ConfigChangeEvent, 1)
+
+	c.kvStoreEventChan = c.cManager.backend.CreateWatch(ctx, key, true)
+
+	go c.processKVStoreWatchEvents()
+
+	return c.changeEventChan
+}
+
+// processKVStoreWatchEvents process event channel recieved from the backend for any ChangeType
+// It checks for the EventType is valid or not.For the valid EventTypes creates ConfigChangeEvent and send it on channel
+func (c *ComponentConfig) processKVStoreWatchEvents() {
+
+	ccKeyPrefix := c.makeConfigPath()
+
+	log.Debugw("processing-kvstore-event-change", log.Fields{"key-prefix": ccKeyPrefix})
+
+	ccPathPrefix := c.cManager.backend.PathPrefix + ccKeyPrefix + kvStorePathSeparator
+
+	for watchResp := range c.kvStoreEventChan {
+
+		if watchResp.EventType == kvstore.CONNECTIONDOWN || watchResp.EventType == kvstore.UNKNOWN {
+			log.Warnw("received-invalid-change-type-in-watch-channel-from-kvstore", log.Fields{"change-type": watchResp.EventType})
+			continue
+		}
+
+		// populating the configAttribute from the received Key
+		// For Example, Key received would be <Backend Prefix Path>/<Config Prefix>/<Component Name>/<Config Type>/default
+		// Storing default in configAttribute variable
+		ky := fmt.Sprintf("%s", watchResp.Key)
+
+		c.changeEventChan <- &ConfigChangeEvent{
+			ChangeType:      ChangeEvent(watchResp.EventType),
+			ConfigAttribute: strings.TrimPrefix(ky, ccPathPrefix),
+		}
+	}
+}
+
+func (c *ComponentConfig) RetrieveAll(ctx context.Context) (map[string]string, error) {
+	key := c.makeConfigPath()
+
+	log.Debugw("retreiving-list", log.Fields{"key": key})
+
+	data, err := c.cManager.backend.List(ctx, key)
+	if err != nil {
+		return nil, err
+	}
+
+	// Looping through the data recieved from the backend for the given key
+	// Trimming the required key and value from data and  storing as key/value pair
+	// For Example, recieved key would be <Backend Prefix Path>/<Config Prefix>/<Component Name>/<Config Type>/default and value \"DEBUG\"
+	// Then in default will be stored as key and DEBUG will be stored as value in map[string]string
+	res := make(map[string]string)
+	ccPathPrefix := c.cManager.backend.PathPrefix + kvStorePathSeparator + key + kvStorePathSeparator
+	for attr, val := range data {
+		res[strings.TrimPrefix(attr, ccPathPrefix)] = strings.Trim(fmt.Sprintf("%s", val.Value), "\"")
+	}
+
+	return res, nil
+}
+
+func (c *ComponentConfig) Save(ctx context.Context, configKey string, configValue string) error {
+	key := c.makeConfigPath() + "/" + configKey
+
+	log.Debugw("saving-key", log.Fields{"key": key, "value": configValue})
+
+	//save the data for update config
+	if err := c.cManager.backend.Put(ctx, key, configValue); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c *ComponentConfig) Delete(ctx context.Context, configKey string) error {
+	//construct key using makeConfigPath
+	key := c.makeConfigPath() + "/" + configKey
+
+	log.Debugw("deleting-key", log.Fields{"key": key})
+	//delete the config
+	if err := c.cManager.backend.Delete(ctx, key); err != nil {
+		return err
+	}
+	return nil
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/logcontroller.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/logcontroller.go
new file mode 100644
index 0000000..b45c2c8
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/config/logcontroller.go
@@ -0,0 +1,289 @@
+/*
+ * 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 Config provides dynamic logging configuration for specific Voltha component type implemented using backend.The package can be used in following manner
+// Any Voltha component type can start dynamic logging by starting goroutine of ProcessLogConfigChange after starting kvClient for the component.
+
+package config
+
+import (
+	"context"
+	"crypto/md5"
+	"encoding/json"
+	"errors"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	"os"
+	"strings"
+)
+
+// ComponentLogController represents a Configuration for Logging Config of specific Voltha component type
+// It stores ComponentConfig and GlobalConfig of loglevel config of specific Voltha component type
+// For example,ComponentLogController instance will be created for rw-core component
+type ComponentLogController struct {
+	ComponentName       string
+	componentNameConfig *ComponentConfig
+	GlobalConfig        *ComponentConfig
+	configManager       *ConfigManager
+	logHash             [16]byte
+}
+
+func NewComponentLogController(cm *ConfigManager) (*ComponentLogController, error) {
+
+	log.Debug("creating-new-component-log-controller")
+	componentName := os.Getenv("COMPONENT_NAME")
+	if componentName == "" {
+		return nil, errors.New("Unable to retrieve PoD Component Name from Runtime env")
+	}
+
+	return &ComponentLogController{
+		ComponentName:       componentName,
+		componentNameConfig: nil,
+		GlobalConfig:        nil,
+		configManager:       cm,
+	}, nil
+
+}
+
+// ProcessLogConfigChange initialize component config and global config
+func ProcessLogConfigChange(cm *ConfigManager, ctx context.Context) {
+	cc, err := NewComponentLogController(cm)
+	if err != nil {
+		log.Errorw("unable-to-construct-component-log-controller-instance-for-log-config-monitoring", log.Fields{"error": err})
+		return
+	}
+
+	log.Debugw("processing-log-config-change", log.Fields{"cc": cc})
+
+	cc.GlobalConfig = cm.InitComponentConfig("global", ConfigTypeLogLevel)
+	log.Debugw("global-log-config", log.Fields{"cc-global-config": cc.GlobalConfig})
+
+	cc.componentNameConfig = cm.InitComponentConfig(cc.ComponentName, ConfigTypeLogLevel)
+	log.Debugw("component-log-config", log.Fields{"cc-component-name-config": cc.componentNameConfig})
+
+	cc.processLogConfig(ctx)
+}
+
+// ProcessLogConfig wait on componentn config and global config channel for any changes
+// Event channel will be recieved from backend for valid change type
+// Then data for componentn log config and global log config will be retrieved from backend and stored in updatedLogConfig in precedence order
+// If any changes in updatedLogConfig will be applied on component
+func (c *ComponentLogController) processLogConfig(ctx context.Context) {
+
+	componentConfigEventChan := c.componentNameConfig.MonitorForConfigChange(ctx)
+
+	globalConfigEventChan := c.GlobalConfig.MonitorForConfigChange(ctx)
+
+	// process the events for componentName and  global config
+	var configEvent *ConfigChangeEvent
+	for {
+		select {
+		case configEvent = <-globalConfigEventChan:
+		case configEvent = <-componentConfigEventChan:
+
+		}
+		log.Debugw("processing-log-config-change", log.Fields{"config-event": configEvent})
+
+		updatedLogConfig, err := c.buildUpdatedLogConfig(ctx)
+		if err != nil {
+			log.Warnw("unable-to-fetch-updated-log-config", log.Fields{"error": err})
+			continue
+		}
+
+		log.Debugw("applying-updated-log-config", log.Fields{"updated-log-config": updatedLogConfig})
+
+		if err := c.loadAndApplyLogConfig(updatedLogConfig); err != nil {
+			log.Warnw("unable-to-load-and-apply-log-config", log.Fields{"error": err})
+		}
+	}
+
+}
+
+// get active loglevel from the zap logger
+func getActiveLogLevel() map[string]string {
+	loglevel := make(map[string]string)
+
+	// now do the default log level
+	if level, err := log.LogLevelToString(log.GetDefaultLogLevel()); err == nil {
+		loglevel["default"] = level
+	}
+
+	// do the per-package log levels
+	for _, packageName := range log.GetPackageNames() {
+		level, err := log.GetPackageLogLevel(packageName)
+		if err != nil {
+			log.Warnw("unable-to-fetch-current-active-loglevel-for-package-name", log.Fields{"package-name": packageName, "error": err})
+		}
+
+		packagename := strings.ReplaceAll(packageName, "/", "#")
+		if l, err := log.LogLevelToString(level); err == nil {
+			loglevel[packagename] = l
+		}
+
+	}
+	log.Debugw("getting-log-levels-from-zap-logger", log.Fields{"log-level": loglevel})
+
+	return loglevel
+}
+
+func (c *ComponentLogController) getGlobalLogConfig(ctx context.Context) (string, error) {
+
+	globalDefaultLogLevel := ""
+	globalLogConfig, err := c.GlobalConfig.RetrieveAll(ctx)
+	if err != nil {
+		return "", err
+	}
+
+	if globalLevel, ok := globalLogConfig["default"]; ok {
+		if _, err := log.StringToLogLevel(globalLevel); err != nil {
+			log.Warnw("unsupported-loglevel-config-defined-at-global-context-pacakge-name", log.Fields{"log-level": globalLevel})
+		} else {
+			globalDefaultLogLevel = globalLevel
+		}
+	}
+	log.Debugw("retrieved-global-log-config", log.Fields{"global-log-config": globalLogConfig})
+
+	return globalDefaultLogLevel, nil
+}
+
+func (c *ComponentLogController) getComponentLogConfig(globalDefaultLogLevel string, ctx context.Context) (map[string]string, error) {
+	var defaultPresent bool
+	componentLogConfig, err := c.componentNameConfig.RetrieveAll(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	for componentKey, componentLevel := range componentLogConfig {
+		if _, err := log.StringToLogLevel(componentLevel); err != nil || componentKey == "" {
+			log.Warnw("unsupported-loglevel-config-defined-at-component-context", log.Fields{"package-name": componentKey, "log-level": componentLevel})
+			delete(componentLogConfig, componentKey)
+		} else {
+			if componentKey == "default" {
+				defaultPresent = true
+			}
+		}
+	}
+	if !defaultPresent {
+		if globalDefaultLogLevel != "" {
+			componentLogConfig["default"] = globalDefaultLogLevel
+		}
+	}
+	log.Debugw("retrieved-component-log-config", log.Fields{"component-log-level": componentLogConfig})
+
+	return componentLogConfig, nil
+}
+
+// buildUpdatedLogConfig retrieve the global logConfig and component logConfig  from backend
+// component logConfig stores the log config with precedence order
+// For example, If the global logConfig is set and component logConfig is set only for specific package then
+// component logConfig is stored with global logConfig  and component logConfig of specific package
+// For example, If the global logConfig is set and component logConfig is set for specific package and as well as for default then
+// component logConfig is stored with  component logConfig data only
+func (c *ComponentLogController) buildUpdatedLogConfig(ctx context.Context) (map[string]string, error) {
+	globalLogLevel, err := c.getGlobalLogConfig(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	componentLogConfig, err := c.getComponentLogConfig(globalLogLevel, ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	log.Debugw("building-and-updating-log-config", log.Fields{"component-log-config": componentLogConfig})
+	return componentLogConfig, nil
+}
+
+// load and apply the current configuration for component name
+// create hash of loaded configuration using GenerateLogConfigHash
+// if there is previous hash stored, compare the hash to stored hash
+// if there is any change will call UpdateLogLevels
+func (c *ComponentLogController) loadAndApplyLogConfig(logConfig map[string]string) error {
+	currentLogHash, err := GenerateLogConfigHash(logConfig)
+	if err != nil {
+		return err
+	}
+
+	log.Debugw("loading-and-applying-log-config", log.Fields{"log-config": logConfig})
+	if c.logHash != currentLogHash {
+		UpdateLogLevels(logConfig)
+		c.logHash = currentLogHash
+	}
+	return nil
+}
+
+// getDefaultLogLevel to return active default log level
+func getDefaultLogLevel(logConfig map[string]string) string {
+
+	for key, level := range logConfig {
+		if key == "default" {
+			return level
+		}
+	}
+	return ""
+}
+
+// createCurrentLogLevel loop through the activeLogLevels recieved from zap logger and updatedLogLevels recieved from buildUpdatedLogConfig
+// The packageName is present or not will be checked in updatedLogLevels ,if the package name is not present then updatedLogLevels will be updated with
+// the packageName and loglevel with  default log level
+func createCurrentLogLevel(activeLogLevels, updatedLogLevels map[string]string) map[string]string {
+	level := getDefaultLogLevel(updatedLogLevels)
+	for activeKey, activeLevel := range activeLogLevels {
+		if _, exist := updatedLogLevels[activeKey]; !exist {
+			if level != "" {
+				activeLevel = level
+			}
+			updatedLogLevels[activeKey] = activeLevel
+		}
+	}
+	return updatedLogLevels
+}
+
+// updateLogLevels update the loglevels for the component
+// retrieve active confguration from logger
+// compare with entries one by one and apply
+func UpdateLogLevels(logLevel map[string]string) {
+
+	activeLogLevels := getActiveLogLevel()
+	currentLogLevel := createCurrentLogLevel(activeLogLevels, logLevel)
+	for key, level := range currentLogLevel {
+		if key == "default" {
+			if l, err := log.StringToLogLevel(level); err == nil {
+				log.SetDefaultLogLevel(l)
+			}
+		} else {
+			pname := strings.ReplaceAll(key, "#", "/")
+			if _, err := log.AddPackage(log.JSON, log.DebugLevel, nil, pname); err != nil {
+				log.Warnw("unable-to-add-log-package", log.Fields{"package-name": pname, "error": err})
+			}
+			if l, err := log.StringToLogLevel(level); err == nil {
+				log.SetPackageLogLevel(pname, l)
+			}
+		}
+	}
+	log.Debugw("updated-log-level", log.Fields{"current-log-level": currentLogLevel})
+}
+
+// generate md5 hash of key value pairs appended into a single string
+// in order by key name
+func GenerateLogConfigHash(createHashLog map[string]string) ([16]byte, error) {
+	createHashLogBytes := []byte{}
+	levelData, err := json.Marshal(createHashLog)
+	if err != nil {
+		return [16]byte{}, err
+	}
+	createHashLogBytes = append(createHashLogBytes, levelData...)
+	return md5.Sum(createHashLogBytes), nil
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/backend.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/backend.go
new file mode 100644
index 0000000..faa86ed
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/backend.go
@@ -0,0 +1,269 @@
+/*
+ * 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 db
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+const (
+	// Default Minimal Interval for posting alive state of backend kvstore on Liveness Channel
+	DefaultLivenessChannelInterval = time.Second * 30
+)
+
+// Backend structure holds details for accessing the kv store
+type Backend struct {
+	sync.RWMutex
+	Client                  kvstore.Client
+	StoreType               string
+	Host                    string
+	Port                    int
+	Timeout                 int
+	PathPrefix              string
+	alive                   bool          // Is this backend connection alive?
+	liveness                chan bool     // channel to post alive state
+	LivenessChannelInterval time.Duration // regularly push alive state beyond this interval
+	lastLivenessTime        time.Time     // Instant of last alive state push
+}
+
+// NewBackend creates a new instance of a Backend structure
+func NewBackend(storeType string, host string, port int, timeout int, pathPrefix string) *Backend {
+	var err error
+
+	b := &Backend{
+		StoreType:               storeType,
+		Host:                    host,
+		Port:                    port,
+		Timeout:                 timeout,
+		LivenessChannelInterval: DefaultLivenessChannelInterval,
+		PathPrefix:              pathPrefix,
+		alive:                   false, // connection considered down at start
+	}
+
+	address := host + ":" + strconv.Itoa(port)
+	if b.Client, err = b.newClient(address, timeout); err != nil {
+		logger.Errorw("failed-to-create-kv-client",
+			log.Fields{
+				"type": storeType, "host": host, "port": port,
+				"timeout": timeout, "prefix": pathPrefix,
+				"error": err.Error(),
+			})
+	}
+
+	return b
+}
+
+func (b *Backend) newClient(address string, timeout int) (kvstore.Client, error) {
+	switch b.StoreType {
+	case "consul":
+		return kvstore.NewConsulClient(address, timeout)
+	case "etcd":
+		return kvstore.NewEtcdClient(address, timeout)
+	}
+	return nil, errors.New("unsupported-kv-store")
+}
+
+func (b *Backend) makePath(key string) string {
+	path := fmt.Sprintf("%s/%s", b.PathPrefix, key)
+	return path
+}
+
+func (b *Backend) updateLiveness(alive bool) {
+	// Periodically push stream of liveness data to the channel,
+	// so that in a live state, the core does not timeout and
+	// send a forced liveness message. Push alive state if the
+	// last push to channel was beyond livenessChannelInterval
+	if b.liveness != nil {
+
+		if b.alive != alive {
+			logger.Debug("update-liveness-channel-reason-change")
+			b.liveness <- alive
+			b.lastLivenessTime = time.Now()
+		} else if time.Since(b.lastLivenessTime) > b.LivenessChannelInterval {
+			logger.Debug("update-liveness-channel-reason-interval")
+			b.liveness <- alive
+			b.lastLivenessTime = time.Now()
+		}
+	}
+
+	// Emit log message only for alive state change
+	if b.alive != alive {
+		logger.Debugw("change-kvstore-alive-status", log.Fields{"alive": alive})
+		b.alive = alive
+	}
+}
+
+// Perform a dummy Key Lookup on kvstore to test Connection Liveness and
+// post on Liveness channel
+func (b *Backend) PerformLivenessCheck(ctx context.Context) bool {
+	alive := b.Client.IsConnectionUp(ctx)
+	logger.Debugw("kvstore-liveness-check-result", log.Fields{"alive": alive})
+
+	b.updateLiveness(alive)
+	return alive
+}
+
+// Enable the liveness monitor channel. This channel will report
+// a "true" or "false" on every kvstore operation which indicates whether
+// or not the connection is still Live. This channel is then picked up
+// by the service (i.e. rw_core / ro_core) to update readiness status
+// and/or take other actions.
+func (b *Backend) EnableLivenessChannel() chan bool {
+	logger.Debug("enable-kvstore-liveness-channel")
+
+	if b.liveness == nil {
+		logger.Debug("create-kvstore-liveness-channel")
+
+		// Channel size of 10 to avoid any possibility of blocking in Load conditions
+		b.liveness = make(chan bool, 10)
+
+		// Post initial alive state
+		b.liveness <- b.alive
+		b.lastLivenessTime = time.Now()
+	}
+
+	return b.liveness
+}
+
+// Extract Alive status of Kvstore based on type of error
+func (b *Backend) isErrorIndicatingAliveKvstore(err error) bool {
+	// Alive unless observed an error indicating so
+	alive := true
+
+	if err != nil {
+
+		// timeout indicates kvstore not reachable/alive
+		if err == context.DeadlineExceeded {
+			alive = false
+		}
+
+		// Need to analyze client-specific errors based on backend type
+		if b.StoreType == "etcd" {
+
+			// For etcd backend, consider not-alive only for errors indicating
+			// timedout request or unavailable/corrupted cluster. For all remaining
+			// error codes listed in https://godoc.org/google.golang.org/grpc/codes#Code,
+			// we would not infer a not-alive backend because such a error may also
+			// occur due to bad client requests or sequence of operations
+			switch status.Code(err) {
+			case codes.DeadlineExceeded:
+				fallthrough
+			case codes.Unavailable:
+				fallthrough
+			case codes.DataLoss:
+				alive = false
+			}
+
+			//} else {
+			// TODO: Implement for consul backend; would it be needed ever?
+		}
+	}
+
+	return alive
+}
+
+// List retrieves one or more items that match the specified key
+func (b *Backend) List(ctx context.Context, key string) (map[string]*kvstore.KVPair, error) {
+	b.Lock()
+	defer b.Unlock()
+
+	formattedPath := b.makePath(key)
+	logger.Debugw("listing-key", log.Fields{"key": key, "path": formattedPath})
+
+	pair, err := b.Client.List(ctx, formattedPath)
+
+	b.updateLiveness(b.isErrorIndicatingAliveKvstore(err))
+
+	return pair, err
+}
+
+// Get retrieves an item that matches the specified key
+func (b *Backend) Get(ctx context.Context, key string) (*kvstore.KVPair, error) {
+	b.Lock()
+	defer b.Unlock()
+
+	formattedPath := b.makePath(key)
+	logger.Debugw("getting-key", log.Fields{"key": key, "path": formattedPath})
+
+	pair, err := b.Client.Get(ctx, formattedPath)
+
+	b.updateLiveness(b.isErrorIndicatingAliveKvstore(err))
+
+	return pair, err
+}
+
+// Put stores an item value under the specifed key
+func (b *Backend) Put(ctx context.Context, key string, value interface{}) error {
+	b.Lock()
+	defer b.Unlock()
+
+	formattedPath := b.makePath(key)
+	logger.Debugw("putting-key", log.Fields{"key": key, "value": value, "path": formattedPath})
+
+	err := b.Client.Put(ctx, formattedPath, value)
+
+	b.updateLiveness(b.isErrorIndicatingAliveKvstore(err))
+
+	return err
+}
+
+// Delete removes an item under the specified key
+func (b *Backend) Delete(ctx context.Context, key string) error {
+	b.Lock()
+	defer b.Unlock()
+
+	formattedPath := b.makePath(key)
+	logger.Debugw("deleting-key", log.Fields{"key": key, "path": formattedPath})
+
+	err := b.Client.Delete(ctx, formattedPath)
+
+	b.updateLiveness(b.isErrorIndicatingAliveKvstore(err))
+
+	return err
+}
+
+// CreateWatch starts watching events for the specified key
+func (b *Backend) CreateWatch(ctx context.Context, key string, withPrefix bool) chan *kvstore.Event {
+	b.Lock()
+	defer b.Unlock()
+
+	formattedPath := b.makePath(key)
+	logger.Debugw("creating-key-watch", log.Fields{"key": key, "path": formattedPath})
+
+	return b.Client.Watch(ctx, formattedPath, withPrefix)
+}
+
+// DeleteWatch stops watching events for the specified key
+func (b *Backend) DeleteWatch(key string, ch chan *kvstore.Event) {
+	b.Lock()
+	defer b.Unlock()
+
+	formattedPath := b.makePath(key)
+	logger.Debugw("deleting-key-watch", log.Fields{"key": key, "path": formattedPath})
+
+	b.Client.CloseWatch(formattedPath, ch)
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/common.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/common.go
new file mode 100644
index 0000000..a5a79ae
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/common.go
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020-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 db
+
+import (
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+)
+
+const (
+	logLevel = log.ErrorLevel
+)
+
+var logger log.Logger
+
+func init() {
+	// Setup this package so that it's log level can be modified at run time
+	var err error
+	logger, err = log.AddPackage(log.JSON, logLevel, log.Fields{"pkg": "db"})
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/client.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/client.go
new file mode 100644
index 0000000..b9cb1ee
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/client.go
@@ -0,0 +1,90 @@
+/*
+ * 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 kvstore
+
+import "context"
+
+const (
+	// Default timeout in seconds when making a kvstore request
+	defaultKVGetTimeout = 5
+	// Maximum channel buffer between publisher/subscriber goroutines
+	maxClientChannelBufferSize = 10
+)
+
+// These constants represent the event types returned by the KV client
+const (
+	PUT = iota
+	DELETE
+	CONNECTIONDOWN
+	UNKNOWN
+)
+
+// KVPair is a common wrapper for key-value pairs returned from the KV store
+type KVPair struct {
+	Key     string
+	Value   interface{}
+	Version int64
+	Session string
+	Lease   int64
+}
+
+// NewKVPair creates a new KVPair object
+func NewKVPair(key string, value interface{}, session string, lease int64, version int64) *KVPair {
+	kv := new(KVPair)
+	kv.Key = key
+	kv.Value = value
+	kv.Session = session
+	kv.Lease = lease
+	kv.Version = version
+	return kv
+}
+
+// Event is generated by the KV client when a key change is detected
+type Event struct {
+	EventType int
+	Key       interface{}
+	Value     interface{}
+	Version   int64
+}
+
+// NewEvent creates a new Event object
+func NewEvent(eventType int, key interface{}, value interface{}, version int64) *Event {
+	evnt := new(Event)
+	evnt.EventType = eventType
+	evnt.Key = key
+	evnt.Value = value
+	evnt.Version = version
+
+	return evnt
+}
+
+// Client represents the set of APIs a KV Client must implement
+type Client interface {
+	List(ctx context.Context, key string) (map[string]*KVPair, error)
+	Get(ctx context.Context, key string) (*KVPair, error)
+	Put(ctx context.Context, key string, value interface{}) error
+	Delete(ctx context.Context, key string) error
+	Reserve(ctx context.Context, key string, value interface{}, ttl int64) (interface{}, error)
+	ReleaseReservation(ctx context.Context, key string) error
+	ReleaseAllReservations(ctx context.Context) error
+	RenewReservation(ctx context.Context, key string) error
+	Watch(ctx context.Context, key string, withPrefix bool) chan *Event
+	AcquireLock(ctx context.Context, lockName string, timeout int) error
+	ReleaseLock(lockName string) error
+	IsConnectionUp(ctx context.Context) bool // timeout in second
+	CloseWatch(key string, ch chan *Event)
+	Close()
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/common.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/common.go
new file mode 100644
index 0000000..2d2a6a6
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/common.go
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020-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 kvstore
+
+import (
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+)
+
+const (
+	logLevel = log.ErrorLevel
+)
+
+var logger log.Logger
+
+func init() {
+	// Setup this package so that it's log level can be modified at run time
+	var err error
+	logger, err = log.AddPackage(log.JSON, logLevel, log.Fields{"pkg": "kvstore"})
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/consulclient.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/consulclient.go
new file mode 100644
index 0000000..bdf2d10
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/consulclient.go
@@ -0,0 +1,512 @@
+/*
+ * 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 kvstore
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	log "github.com/opencord/voltha-lib-go/v3/pkg/log"
+	"sync"
+	"time"
+	//log "ciena.com/coordinator/common"
+	consulapi "github.com/hashicorp/consul/api"
+)
+
+type channelContextMap struct {
+	ctx     context.Context
+	channel chan *Event
+	cancel  context.CancelFunc
+}
+
+// ConsulClient represents the consul KV store client
+type ConsulClient struct {
+	session                *consulapi.Session
+	sessionID              string
+	consul                 *consulapi.Client
+	doneCh                 *chan int
+	keyReservations        map[string]interface{}
+	watchedChannelsContext map[string][]*channelContextMap
+	writeLock              sync.Mutex
+}
+
+// NewConsulClient returns a new client for the Consul KV store
+func NewConsulClient(addr string, timeout int) (*ConsulClient, error) {
+
+	duration := GetDuration(timeout)
+
+	config := consulapi.DefaultConfig()
+	config.Address = addr
+	config.WaitTime = duration
+	consul, err := consulapi.NewClient(config)
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+
+	doneCh := make(chan int, 1)
+	wChannelsContext := make(map[string][]*channelContextMap)
+	reservations := make(map[string]interface{})
+	return &ConsulClient{consul: consul, doneCh: &doneCh, watchedChannelsContext: wChannelsContext, keyReservations: reservations}, nil
+}
+
+// IsConnectionUp returns whether the connection to the Consul KV store is up
+func (c *ConsulClient) IsConnectionUp(ctx context.Context) bool {
+	logger.Error("Unimplemented function")
+	return false
+}
+
+// List returns an array of key-value pairs with key as a prefix.  Timeout defines how long the function will
+// wait for a response
+func (c *ConsulClient) List(ctx context.Context, key string) (map[string]*KVPair, error) {
+
+	deadline, _ := ctx.Deadline()
+	kv := c.consul.KV()
+	var queryOptions consulapi.QueryOptions
+	queryOptions.WaitTime = GetDuration(deadline.Second())
+	// For now we ignore meta data
+	kvps, _, err := kv.List(key, &queryOptions)
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+	m := make(map[string]*KVPair)
+	for _, kvp := range kvps {
+		m[string(kvp.Key)] = NewKVPair(string(kvp.Key), kvp.Value, string(kvp.Session), 0, -1)
+	}
+	return m, nil
+}
+
+// Get returns a key-value pair for a given key. Timeout defines how long the function will
+// wait for a response
+func (c *ConsulClient) Get(ctx context.Context, key string) (*KVPair, error) {
+
+	deadline, _ := ctx.Deadline()
+	kv := c.consul.KV()
+	var queryOptions consulapi.QueryOptions
+	queryOptions.WaitTime = GetDuration(deadline.Second())
+	// For now we ignore meta data
+	kvp, _, err := kv.Get(key, &queryOptions)
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+	if kvp != nil {
+		return NewKVPair(string(kvp.Key), kvp.Value, string(kvp.Session), 0, -1), nil
+	}
+
+	return nil, nil
+}
+
+// Put writes a key-value pair to the KV store.  Value can only be a string or []byte since the consul API
+// accepts only a []byte as a value for a put operation. Timeout defines how long the function will
+// wait for a response
+func (c *ConsulClient) Put(ctx context.Context, key string, value interface{}) error {
+
+	// Validate that we can create a byte array from the value as consul API expects a byte array
+	var val []byte
+	var er error
+	if val, er = ToByte(value); er != nil {
+		logger.Error(er)
+		return er
+	}
+
+	// Create a key value pair
+	kvp := consulapi.KVPair{Key: key, Value: val}
+	kv := c.consul.KV()
+	var writeOptions consulapi.WriteOptions
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+	_, err := kv.Put(&kvp, &writeOptions)
+	if err != nil {
+		logger.Error(err)
+		return err
+	}
+	return nil
+}
+
+// Delete removes a key from the KV store. Timeout defines how long the function will
+// wait for a response
+func (c *ConsulClient) Delete(ctx context.Context, key string) error {
+	kv := c.consul.KV()
+	var writeOptions consulapi.WriteOptions
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+	_, err := kv.Delete(key, &writeOptions)
+	if err != nil {
+		logger.Error(err)
+		return err
+	}
+	return nil
+}
+
+func (c *ConsulClient) deleteSession() {
+	if c.sessionID != "" {
+		logger.Debug("cleaning-up-session")
+		session := c.consul.Session()
+		_, err := session.Destroy(c.sessionID, nil)
+		if err != nil {
+			logger.Errorw("error-cleaning-session", log.Fields{"session": c.sessionID, "error": err})
+		}
+	}
+	c.sessionID = ""
+	c.session = nil
+}
+
+func (c *ConsulClient) createSession(ttl int64, retries int) (*consulapi.Session, string, error) {
+	session := c.consul.Session()
+	entry := &consulapi.SessionEntry{
+		Behavior: consulapi.SessionBehaviorDelete,
+		TTL:      "10s", // strconv.FormatInt(ttl, 10) + "s", // disable ttl
+	}
+
+	for {
+		id, meta, err := session.Create(entry, nil)
+		if err != nil {
+			logger.Errorw("create-session-error", log.Fields{"error": err})
+			if retries == 0 {
+				return nil, "", err
+			}
+		} else if meta.RequestTime == 0 {
+			logger.Errorw("create-session-bad-meta-data", log.Fields{"meta-data": meta})
+			if retries == 0 {
+				return nil, "", errors.New("bad-meta-data")
+			}
+		} else if id == "" {
+			logger.Error("create-session-nil-id")
+			if retries == 0 {
+				return nil, "", errors.New("ID-nil")
+			}
+		} else {
+			return session, id, nil
+		}
+		// If retry param is -1 we will retry indefinitely
+		if retries > 0 {
+			retries--
+		}
+		logger.Debug("retrying-session-create-after-a-second-delay")
+		time.Sleep(time.Duration(1) * time.Second)
+	}
+}
+
+// Helper function to verify mostly whether the content of two interface types are the same.  Focus is []byte and
+// string types
+func isEqual(val1 interface{}, val2 interface{}) bool {
+	b1, err := ToByte(val1)
+	b2, er := ToByte(val2)
+	if err == nil && er == nil {
+		return bytes.Equal(b1, b2)
+	}
+	return val1 == val2
+}
+
+// Reserve is invoked to acquire a key and set it to a given value. Value can only be a string or []byte since
+// the consul API accepts only a []byte.  Timeout defines how long the function will wait for a response.  TTL
+// defines how long that reservation is valid.  When TTL expires the key is unreserved by the KV store itself.
+// If the key is acquired then the value returned will be the value passed in.  If the key is already acquired
+// then the value assigned to that key will be returned.
+func (c *ConsulClient) Reserve(ctx context.Context, key string, value interface{}, ttl int64) (interface{}, error) {
+
+	// Validate that we can create a byte array from the value as consul API expects a byte array
+	var val []byte
+	var er error
+	if val, er = ToByte(value); er != nil {
+		logger.Error(er)
+		return nil, er
+	}
+
+	// Cleanup any existing session and recreate new ones.  A key is reserved against a session
+	if c.sessionID != "" {
+		c.deleteSession()
+	}
+
+	// Clear session if reservation is not successful
+	reservationSuccessful := false
+	defer func() {
+		if !reservationSuccessful {
+			logger.Debug("deleting-session")
+			c.deleteSession()
+		}
+	}()
+
+	session, sessionID, err := c.createSession(ttl, -1)
+	if err != nil {
+		logger.Errorw("no-session-created", log.Fields{"error": err})
+		return "", errors.New("no-session-created")
+	}
+	logger.Debugw("session-created", log.Fields{"session-id": sessionID})
+	c.sessionID = sessionID
+	c.session = session
+
+	// Try to grap the Key using the session
+	kv := c.consul.KV()
+	kvp := consulapi.KVPair{Key: key, Value: val, Session: c.sessionID}
+	result, _, err := kv.Acquire(&kvp, nil)
+	if err != nil {
+		logger.Errorw("error-acquiring-keys", log.Fields{"error": err})
+		return nil, err
+	}
+
+	logger.Debugw("key-acquired", log.Fields{"key": key, "status": result})
+
+	// Irrespective whether we were successful in acquiring the key, let's read it back and see if it's us.
+	m, err := c.Get(ctx, key)
+	if err != nil {
+		return nil, err
+	}
+	if m != nil {
+		logger.Debugw("response-received", log.Fields{"key": m.Key, "m.value": string(m.Value.([]byte)), "value": value})
+		if m.Key == key && isEqual(m.Value, value) {
+			// My reservation is successful - register it.  For now, support is only for 1 reservation per key
+			// per session.
+			reservationSuccessful = true
+			c.writeLock.Lock()
+			c.keyReservations[key] = m.Value
+			c.writeLock.Unlock()
+			return m.Value, nil
+		}
+		// My reservation has failed.  Return the owner of that key
+		return m.Value, nil
+	}
+	return nil, nil
+}
+
+// ReleaseAllReservations releases all key reservations previously made (using Reserve API)
+func (c *ConsulClient) ReleaseAllReservations(ctx context.Context) error {
+	kv := c.consul.KV()
+	var kvp consulapi.KVPair
+	var result bool
+	var err error
+
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+
+	for key, value := range c.keyReservations {
+		kvp = consulapi.KVPair{Key: key, Value: value.([]byte), Session: c.sessionID}
+		result, _, err = kv.Release(&kvp, nil)
+		if err != nil {
+			logger.Errorw("cannot-release-reservation", log.Fields{"key": key, "error": err})
+			return err
+		}
+		if !result {
+			logger.Errorw("cannot-release-reservation", log.Fields{"key": key})
+		}
+		delete(c.keyReservations, key)
+	}
+	return nil
+}
+
+// ReleaseReservation releases reservation for a specific key.
+func (c *ConsulClient) ReleaseReservation(ctx context.Context, key string) error {
+	var ok bool
+	var reservedValue interface{}
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+	if reservedValue, ok = c.keyReservations[key]; !ok {
+		return errors.New("key-not-reserved:" + key)
+	}
+	// Release the reservation
+	kv := c.consul.KV()
+	kvp := consulapi.KVPair{Key: key, Value: reservedValue.([]byte), Session: c.sessionID}
+
+	result, _, er := kv.Release(&kvp, nil)
+	if er != nil {
+		return er
+	}
+	// Remove that key entry on success
+	if result {
+		delete(c.keyReservations, key)
+		return nil
+	}
+	return errors.New("key-cannot-be-unreserved")
+}
+
+// RenewReservation renews a reservation.  A reservation will go stale after the specified TTL (Time To Live)
+// period specified when reserving the key
+func (c *ConsulClient) RenewReservation(ctx context.Context, key string) error {
+	// In the case of Consul, renew reservation of a reserve key only require renewing the client session.
+
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+
+	// Verify the key was reserved
+	if _, ok := c.keyReservations[key]; !ok {
+		return errors.New("key-not-reserved")
+	}
+
+	if c.session == nil {
+		return errors.New("no-session-exist")
+	}
+
+	var writeOptions consulapi.WriteOptions
+	if _, _, err := c.session.Renew(c.sessionID, &writeOptions); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Watch provides the watch capability on a given key.  It returns a channel onto which the callee needs to
+// listen to receive Events.
+func (c *ConsulClient) Watch(ctx context.Context, key string, withPrefix bool) chan *Event {
+
+	// Create a new channel
+	ch := make(chan *Event, maxClientChannelBufferSize)
+
+	// Create a context to track this request
+	watchContext, cFunc := context.WithCancel(context.Background())
+
+	// Save the channel and context reference for later
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+	ccm := channelContextMap{channel: ch, ctx: watchContext, cancel: cFunc}
+	c.watchedChannelsContext[key] = append(c.watchedChannelsContext[key], &ccm)
+
+	// Launch a go routine to listen for updates
+	go c.listenForKeyChange(watchContext, key, ch)
+
+	return ch
+}
+
+// CloseWatch closes a specific watch. Both the key and the channel are required when closing a watch as there
+// may be multiple listeners on the same key.  The previously created channel serves as a key
+func (c *ConsulClient) CloseWatch(key string, ch chan *Event) {
+	// First close the context
+	var ok bool
+	var watchedChannelsContexts []*channelContextMap
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+	if watchedChannelsContexts, ok = c.watchedChannelsContext[key]; !ok {
+		logger.Errorw("key-has-no-watched-context-or-channel", log.Fields{"key": key})
+		return
+	}
+	// Look for the channels
+	var pos = -1
+	for i, chCtxMap := range watchedChannelsContexts {
+		if chCtxMap.channel == ch {
+			logger.Debug("channel-found")
+			chCtxMap.cancel()
+			//close the channel
+			close(ch)
+			pos = i
+			break
+		}
+	}
+	// Remove that entry if present
+	if pos >= 0 {
+		c.watchedChannelsContext[key] = append(c.watchedChannelsContext[key][:pos], c.watchedChannelsContext[key][pos+1:]...)
+	}
+	logger.Debugw("watched-channel-exiting", log.Fields{"key": key, "channel": c.watchedChannelsContext[key]})
+}
+
+func (c *ConsulClient) isKVEqual(kv1 *consulapi.KVPair, kv2 *consulapi.KVPair) bool {
+	if (kv1 == nil) && (kv2 == nil) {
+		return true
+	} else if (kv1 == nil) || (kv2 == nil) {
+		return false
+	}
+	// Both the KV should be non-null here
+	if kv1.Key != kv2.Key ||
+		!bytes.Equal(kv1.Value, kv2.Value) ||
+		kv1.Session != kv2.Session ||
+		kv1.LockIndex != kv2.LockIndex ||
+		kv1.ModifyIndex != kv2.ModifyIndex {
+		return false
+	}
+	return true
+}
+
+func (c *ConsulClient) listenForKeyChange(watchContext context.Context, key string, ch chan *Event) {
+	logger.Debugw("start-watching-channel", log.Fields{"key": key, "channel": ch})
+
+	defer c.CloseWatch(key, ch)
+	duration := GetDuration(defaultKVGetTimeout)
+	kv := c.consul.KV()
+	var queryOptions consulapi.QueryOptions
+	queryOptions.WaitTime = duration
+
+	// Get the existing value, if any
+	previousKVPair, meta, err := kv.Get(key, &queryOptions)
+	if err != nil {
+		logger.Debug(err)
+	}
+	lastIndex := meta.LastIndex
+
+	// Wait for change.  Push any change onto the channel and keep waiting for new update
+	//var waitOptions consulapi.QueryOptions
+	var pair *consulapi.KVPair
+	//watchContext, _ := context.WithCancel(context.Background())
+	waitOptions := queryOptions.WithContext(watchContext)
+	for {
+		//waitOptions = consulapi.QueryOptions{WaitIndex: lastIndex}
+		waitOptions.WaitIndex = lastIndex
+		pair, meta, err = kv.Get(key, waitOptions)
+		select {
+		case <-watchContext.Done():
+			logger.Debug("done-event-received-exiting")
+			return
+		default:
+			if err != nil {
+				logger.Warnw("error-from-watch", log.Fields{"error": err})
+				ch <- NewEvent(CONNECTIONDOWN, key, []byte(""), -1)
+			} else {
+				logger.Debugw("index-state", log.Fields{"lastindex": lastIndex, "newindex": meta.LastIndex, "key": key})
+			}
+		}
+		if err != nil {
+			logger.Debug(err)
+			// On error, block for 10 milliseconds to prevent endless loop
+			time.Sleep(10 * time.Millisecond)
+		} else if meta.LastIndex <= lastIndex {
+			logger.Info("no-index-change-or-negative")
+		} else {
+			logger.Debugw("update-received", log.Fields{"pair": pair})
+			if pair == nil {
+				ch <- NewEvent(DELETE, key, []byte(""), -1)
+			} else if !c.isKVEqual(pair, previousKVPair) {
+				// Push the change onto the channel if the data has changed
+				// For now just assume it's a PUT change
+				logger.Debugw("pair-details", log.Fields{"session": pair.Session, "key": pair.Key, "value": pair.Value})
+				ch <- NewEvent(PUT, pair.Key, pair.Value, -1)
+			}
+			previousKVPair = pair
+			lastIndex = meta.LastIndex
+		}
+	}
+}
+
+// Close closes the KV store client
+func (c *ConsulClient) Close() {
+	var writeOptions consulapi.WriteOptions
+	// Inform any goroutine it's time to say goodbye.
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
+	if c.doneCh != nil {
+		close(*c.doneCh)
+	}
+
+	// Clear the sessionID
+	if _, err := c.consul.Session().Destroy(c.sessionID, &writeOptions); err != nil {
+		logger.Errorw("error-closing-client", log.Fields{"error": err})
+	}
+}
+
+func (c *ConsulClient) AcquireLock(ctx context.Context, lockName string, timeout int) error {
+	return nil
+}
+
+func (c *ConsulClient) ReleaseLock(lockName string) error {
+	return nil
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/etcdclient.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/etcdclient.go
new file mode 100644
index 0000000..d38f0f6
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/etcdclient.go
@@ -0,0 +1,485 @@
+/*
+ * 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 kvstore
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"sync"
+
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	v3Client "go.etcd.io/etcd/clientv3"
+	v3Concurrency "go.etcd.io/etcd/clientv3/concurrency"
+	v3rpcTypes "go.etcd.io/etcd/etcdserver/api/v3rpc/rpctypes"
+)
+
+// EtcdClient represents the Etcd KV store client
+type EtcdClient struct {
+	ectdAPI             *v3Client.Client
+	keyReservations     map[string]*v3Client.LeaseID
+	watchedChannels     sync.Map
+	keyReservationsLock sync.RWMutex
+	lockToMutexMap      map[string]*v3Concurrency.Mutex
+	lockToSessionMap    map[string]*v3Concurrency.Session
+	lockToMutexLock     sync.Mutex
+}
+
+// NewEtcdClient returns a new client for the Etcd KV store
+func NewEtcdClient(addr string, timeout int) (*EtcdClient, error) {
+	duration := GetDuration(timeout)
+
+	c, err := v3Client.New(v3Client.Config{
+		Endpoints:   []string{addr},
+		DialTimeout: duration,
+	})
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+
+	reservations := make(map[string]*v3Client.LeaseID)
+	lockMutexMap := make(map[string]*v3Concurrency.Mutex)
+	lockSessionMap := make(map[string]*v3Concurrency.Session)
+
+	return &EtcdClient{ectdAPI: c, keyReservations: reservations, lockToMutexMap: lockMutexMap,
+		lockToSessionMap: lockSessionMap}, nil
+}
+
+// IsConnectionUp returns whether the connection to the Etcd KV store is up.  If a timeout occurs then
+// it is assumed the connection is down or unreachable.
+func (c *EtcdClient) IsConnectionUp(ctx context.Context) bool {
+	// Let's try to get a non existent key.  If the connection is up then there will be no error returned.
+	if _, err := c.Get(ctx, "non-existent-key"); err != nil {
+		return false
+	}
+	//cancel()
+	return true
+}
+
+// List returns an array of key-value pairs with key as a prefix.  Timeout defines how long the function will
+// wait for a response
+func (c *EtcdClient) List(ctx context.Context, key string) (map[string]*KVPair, error) {
+	resp, err := c.ectdAPI.Get(ctx, key, v3Client.WithPrefix())
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+	m := make(map[string]*KVPair)
+	for _, ev := range resp.Kvs {
+		m[string(ev.Key)] = NewKVPair(string(ev.Key), ev.Value, "", ev.Lease, ev.Version)
+	}
+	return m, nil
+}
+
+// Get returns a key-value pair for a given key. Timeout defines how long the function will
+// wait for a response
+func (c *EtcdClient) Get(ctx context.Context, key string) (*KVPair, error) {
+
+	resp, err := c.ectdAPI.Get(ctx, key)
+
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+	for _, ev := range resp.Kvs {
+		// Only one value is returned
+		return NewKVPair(string(ev.Key), ev.Value, "", ev.Lease, ev.Version), nil
+	}
+	return nil, nil
+}
+
+// Put writes a key-value pair to the KV store.  Value can only be a string or []byte since the etcd API
+// accepts only a string as a value for a put operation. Timeout defines how long the function will
+// wait for a response
+func (c *EtcdClient) Put(ctx context.Context, key string, value interface{}) error {
+
+	// Validate that we can convert value to a string as etcd API expects a string
+	var val string
+	var er error
+	if val, er = ToString(value); er != nil {
+		return fmt.Errorf("unexpected-type-%T", value)
+	}
+
+	var err error
+	// Check if there is already a lease for this key - if there is then use it, otherwise a PUT will make
+	// that KV key permanent instead of automatically removing it after a lease expiration
+	c.keyReservationsLock.RLock()
+	leaseID, ok := c.keyReservations[key]
+	c.keyReservationsLock.RUnlock()
+	if ok {
+		_, err = c.ectdAPI.Put(ctx, key, val, v3Client.WithLease(*leaseID))
+	} else {
+		_, err = c.ectdAPI.Put(ctx, key, val)
+	}
+
+	if err != nil {
+		switch err {
+		case context.Canceled:
+			logger.Warnw("context-cancelled", log.Fields{"error": err})
+		case context.DeadlineExceeded:
+			logger.Warnw("context-deadline-exceeded", log.Fields{"error": err})
+		case v3rpcTypes.ErrEmptyKey:
+			logger.Warnw("etcd-client-error", log.Fields{"error": err})
+		default:
+			logger.Warnw("bad-endpoints", log.Fields{"error": err})
+		}
+		return err
+	}
+	return nil
+}
+
+// Delete removes a key from the KV store. Timeout defines how long the function will
+// wait for a response
+func (c *EtcdClient) Delete(ctx context.Context, key string) error {
+
+	// delete the key
+	if _, err := c.ectdAPI.Delete(ctx, key); err != nil {
+		logger.Errorw("failed-to-delete-key", log.Fields{"key": key, "error": err})
+		return err
+	}
+	logger.Debugw("key(s)-deleted", log.Fields{"key": key})
+	return nil
+}
+
+// Reserve is invoked to acquire a key and set it to a given value. Value can only be a string or []byte since
+// the etcd API accepts only a string.  Timeout defines how long the function will wait for a response.  TTL
+// defines how long that reservation is valid.  When TTL expires the key is unreserved by the KV store itself.
+// If the key is acquired then the value returned will be the value passed in.  If the key is already acquired
+// then the value assigned to that key will be returned.
+func (c *EtcdClient) Reserve(ctx context.Context, key string, value interface{}, ttl int64) (interface{}, error) {
+	// Validate that we can convert value to a string as etcd API expects a string
+	var val string
+	var er error
+	if val, er = ToString(value); er != nil {
+		return nil, fmt.Errorf("unexpected-type%T", value)
+	}
+
+	resp, err := c.ectdAPI.Grant(ctx, ttl)
+	if err != nil {
+		logger.Error(err)
+		return nil, err
+	}
+	// Register the lease id
+	c.keyReservationsLock.Lock()
+	c.keyReservations[key] = &resp.ID
+	c.keyReservationsLock.Unlock()
+
+	// Revoke lease if reservation is not successful
+	reservationSuccessful := false
+	defer func() {
+		if !reservationSuccessful {
+			if err = c.ReleaseReservation(context.Background(), key); err != nil {
+				logger.Error("cannot-release-lease")
+			}
+		}
+	}()
+
+	// Try to grap the Key with the above lease
+	c.ectdAPI.Txn(context.Background())
+	txn := c.ectdAPI.Txn(context.Background())
+	txn = txn.If(v3Client.Compare(v3Client.Version(key), "=", 0))
+	txn = txn.Then(v3Client.OpPut(key, val, v3Client.WithLease(resp.ID)))
+	txn = txn.Else(v3Client.OpGet(key))
+	result, er := txn.Commit()
+	if er != nil {
+		return nil, er
+	}
+
+	if !result.Succeeded {
+		// Verify whether we are already the owner of that Key
+		if len(result.Responses) > 0 &&
+			len(result.Responses[0].GetResponseRange().Kvs) > 0 {
+			kv := result.Responses[0].GetResponseRange().Kvs[0]
+			if string(kv.Value) == val {
+				reservationSuccessful = true
+				return value, nil
+			}
+			return kv.Value, nil
+		}
+	} else {
+		// Read the Key to ensure this is our Key
+		m, err := c.Get(ctx, key)
+		if err != nil {
+			return nil, err
+		}
+		if m != nil {
+			if m.Key == key && isEqual(m.Value, value) {
+				// My reservation is successful - register it.  For now, support is only for 1 reservation per key
+				// per session.
+				reservationSuccessful = true
+				return value, nil
+			}
+			// My reservation has failed.  Return the owner of that key
+			return m.Value, nil
+		}
+	}
+	return nil, nil
+}
+
+// ReleaseAllReservations releases all key reservations previously made (using Reserve API)
+func (c *EtcdClient) ReleaseAllReservations(ctx context.Context) error {
+	c.keyReservationsLock.Lock()
+	defer c.keyReservationsLock.Unlock()
+
+	for key, leaseID := range c.keyReservations {
+		_, err := c.ectdAPI.Revoke(ctx, *leaseID)
+		if err != nil {
+			logger.Errorw("cannot-release-reservation", log.Fields{"key": key, "error": err})
+			return err
+		}
+		delete(c.keyReservations, key)
+	}
+	return nil
+}
+
+// ReleaseReservation releases reservation for a specific key.
+func (c *EtcdClient) ReleaseReservation(ctx context.Context, key string) error {
+	// Get the leaseid using the key
+	logger.Debugw("Release-reservation", log.Fields{"key": key})
+	var ok bool
+	var leaseID *v3Client.LeaseID
+	c.keyReservationsLock.Lock()
+	defer c.keyReservationsLock.Unlock()
+	if leaseID, ok = c.keyReservations[key]; !ok {
+		return nil
+	}
+
+	if leaseID != nil {
+		_, err := c.ectdAPI.Revoke(ctx, *leaseID)
+		if err != nil {
+			logger.Error(err)
+			return err
+		}
+		delete(c.keyReservations, key)
+	}
+	return nil
+}
+
+// RenewReservation renews a reservation.  A reservation will go stale after the specified TTL (Time To Live)
+// period specified when reserving the key
+func (c *EtcdClient) RenewReservation(ctx context.Context, key string) error {
+	// Get the leaseid using the key
+	var ok bool
+	var leaseID *v3Client.LeaseID
+	c.keyReservationsLock.RLock()
+	leaseID, ok = c.keyReservations[key]
+	c.keyReservationsLock.RUnlock()
+
+	if !ok {
+		return errors.New("key-not-reserved")
+	}
+
+	if leaseID != nil {
+		_, err := c.ectdAPI.KeepAliveOnce(ctx, *leaseID)
+		if err != nil {
+			logger.Errorw("lease-may-have-expired", log.Fields{"error": err})
+			return err
+		}
+	} else {
+		return errors.New("lease-expired")
+	}
+	return nil
+}
+
+// Watch provides the watch capability on a given key.  It returns a channel onto which the callee needs to
+// listen to receive Events.
+func (c *EtcdClient) Watch(ctx context.Context, key string, withPrefix bool) chan *Event {
+	w := v3Client.NewWatcher(c.ectdAPI)
+	ctx, cancel := context.WithCancel(ctx)
+	var channel v3Client.WatchChan
+	if withPrefix {
+		channel = w.Watch(ctx, key, v3Client.WithPrefix())
+	} else {
+		channel = w.Watch(ctx, key)
+	}
+
+	// Create a new channel
+	ch := make(chan *Event, maxClientChannelBufferSize)
+
+	// Keep track of the created channels so they can be closed when required
+	channelMap := make(map[chan *Event]v3Client.Watcher)
+	channelMap[ch] = w
+
+	channelMaps := c.addChannelMap(key, channelMap)
+
+	// Changing the log field (from channelMaps) as the underlying logger cannot format the map of channels into a
+	// json format.
+	logger.Debugw("watched-channels", log.Fields{"len": len(channelMaps)})
+	// Launch a go routine to listen for updates
+	go c.listenForKeyChange(channel, ch, cancel)
+
+	return ch
+
+}
+
+func (c *EtcdClient) addChannelMap(key string, channelMap map[chan *Event]v3Client.Watcher) []map[chan *Event]v3Client.Watcher {
+	var channels interface{}
+	var exists bool
+
+	if channels, exists = c.watchedChannels.Load(key); exists {
+		channels = append(channels.([]map[chan *Event]v3Client.Watcher), channelMap)
+	} else {
+		channels = []map[chan *Event]v3Client.Watcher{channelMap}
+	}
+	c.watchedChannels.Store(key, channels)
+
+	return channels.([]map[chan *Event]v3Client.Watcher)
+}
+
+func (c *EtcdClient) removeChannelMap(key string, pos int) []map[chan *Event]v3Client.Watcher {
+	var channels interface{}
+	var exists bool
+
+	if channels, exists = c.watchedChannels.Load(key); exists {
+		channels = append(channels.([]map[chan *Event]v3Client.Watcher)[:pos], channels.([]map[chan *Event]v3Client.Watcher)[pos+1:]...)
+		c.watchedChannels.Store(key, channels)
+	}
+
+	return channels.([]map[chan *Event]v3Client.Watcher)
+}
+
+func (c *EtcdClient) getChannelMaps(key string) ([]map[chan *Event]v3Client.Watcher, bool) {
+	var channels interface{}
+	var exists bool
+
+	channels, exists = c.watchedChannels.Load(key)
+
+	if channels == nil {
+		return nil, exists
+	}
+
+	return channels.([]map[chan *Event]v3Client.Watcher), exists
+}
+
+// CloseWatch closes a specific watch. Both the key and the channel are required when closing a watch as there
+// may be multiple listeners on the same key.  The previously created channel serves as a key
+func (c *EtcdClient) CloseWatch(key string, ch chan *Event) {
+	// Get the array of channels mapping
+	var watchedChannels []map[chan *Event]v3Client.Watcher
+	var ok bool
+
+	if watchedChannels, ok = c.getChannelMaps(key); !ok {
+		logger.Warnw("key-has-no-watched-channels", log.Fields{"key": key})
+		return
+	}
+	// Look for the channels
+	var pos = -1
+	for i, chMap := range watchedChannels {
+		if t, ok := chMap[ch]; ok {
+			logger.Debug("channel-found")
+			// Close the etcd watcher before the client channel.  This should close the etcd channel as well
+			if err := t.Close(); err != nil {
+				logger.Errorw("watcher-cannot-be-closed", log.Fields{"key": key, "error": err})
+			}
+			pos = i
+			break
+		}
+	}
+
+	channelMaps, _ := c.getChannelMaps(key)
+	// Remove that entry if present
+	if pos >= 0 {
+		channelMaps = c.removeChannelMap(key, pos)
+	}
+	logger.Infow("watcher-channel-exiting", log.Fields{"key": key, "channel": channelMaps})
+}
+
+func (c *EtcdClient) listenForKeyChange(channel v3Client.WatchChan, ch chan<- *Event, cancel context.CancelFunc) {
+	logger.Debug("start-listening-on-channel ...")
+	defer cancel()
+	defer close(ch)
+	for resp := range channel {
+		for _, ev := range resp.Events {
+			ch <- NewEvent(getEventType(ev), ev.Kv.Key, ev.Kv.Value, ev.Kv.Version)
+		}
+	}
+	logger.Debug("stop-listening-on-channel ...")
+}
+
+func getEventType(event *v3Client.Event) int {
+	switch event.Type {
+	case v3Client.EventTypePut:
+		return PUT
+	case v3Client.EventTypeDelete:
+		return DELETE
+	}
+	return UNKNOWN
+}
+
+// Close closes the KV store client
+func (c *EtcdClient) Close() {
+	if err := c.ectdAPI.Close(); err != nil {
+		logger.Errorw("error-closing-client", log.Fields{"error": err})
+	}
+}
+
+func (c *EtcdClient) addLockName(lockName string, lock *v3Concurrency.Mutex, session *v3Concurrency.Session) {
+	c.lockToMutexLock.Lock()
+	defer c.lockToMutexLock.Unlock()
+	c.lockToMutexMap[lockName] = lock
+	c.lockToSessionMap[lockName] = session
+}
+
+func (c *EtcdClient) deleteLockName(lockName string) {
+	c.lockToMutexLock.Lock()
+	defer c.lockToMutexLock.Unlock()
+	delete(c.lockToMutexMap, lockName)
+	delete(c.lockToSessionMap, lockName)
+}
+
+func (c *EtcdClient) getLock(lockName string) (*v3Concurrency.Mutex, *v3Concurrency.Session) {
+	c.lockToMutexLock.Lock()
+	defer c.lockToMutexLock.Unlock()
+	var lock *v3Concurrency.Mutex
+	var session *v3Concurrency.Session
+	if l, exist := c.lockToMutexMap[lockName]; exist {
+		lock = l
+	}
+	if s, exist := c.lockToSessionMap[lockName]; exist {
+		session = s
+	}
+	return lock, session
+}
+
+func (c *EtcdClient) AcquireLock(ctx context.Context, lockName string, timeout int) error {
+	session, _ := v3Concurrency.NewSession(c.ectdAPI, v3Concurrency.WithContext(ctx))
+	mu := v3Concurrency.NewMutex(session, "/devicelock_"+lockName)
+	if err := mu.Lock(context.Background()); err != nil {
+		//cancel()
+		return err
+	}
+	c.addLockName(lockName, mu, session)
+	return nil
+}
+
+func (c *EtcdClient) ReleaseLock(lockName string) error {
+	lock, session := c.getLock(lockName)
+	var err error
+	if lock != nil {
+		if e := lock.Unlock(context.Background()); e != nil {
+			err = e
+		}
+	}
+	if session != nil {
+		if e := session.Close(); e != nil {
+			err = e
+		}
+	}
+	c.deleteLockName(lockName)
+
+	return err
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/kvutils.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/kvutils.go
new file mode 100644
index 0000000..cf9a95c
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore/kvutils.go
@@ -0,0 +1,56 @@
+/*
+ * 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 kvstore
+
+import (
+	"fmt"
+	"time"
+)
+
+// GetDuration converts a timeout value from int to duration.  If the timeout value is
+// either not set of -ve then we default KV timeout (configurable) is used.
+func GetDuration(timeout int) time.Duration {
+	if timeout <= 0 {
+		return defaultKVGetTimeout * time.Second
+	}
+	return time.Duration(timeout) * time.Second
+}
+
+// ToString converts an interface value to a string.  The interface should either be of
+// a string type or []byte.  Otherwise, an error is returned.
+func ToString(value interface{}) (string, error) {
+	switch t := value.(type) {
+	case []byte:
+		return string(value.([]byte)), nil
+	case string:
+		return value.(string), nil
+	default:
+		return "", fmt.Errorf("unexpected-type-%T", t)
+	}
+}
+
+// ToByte converts an interface value to a []byte.  The interface should either be of
+// a string type or []byte.  Otherwise, an error is returned.
+func ToByte(value interface{}) ([]byte, error) {
+	switch t := value.(type) {
+	case []byte:
+		return value.([]byte), nil
+	case string:
+		return []byte(value.(string)), nil
+	default:
+		return nil, fmt.Errorf("unexpected-type-%T", t)
+	}
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/log/log.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/log/log.go
index 43567e3..47fa3fb 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/log/log.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/log/log.go
@@ -50,9 +50,11 @@
 	"strings"
 )
 
+type LogLevel int8
+
 const (
 	// DebugLevel logs a message at debug level
-	DebugLevel = iota
+	DebugLevel = LogLevel(iota)
 	// InfoLevel logs a message at info level
 	InfoLevel
 	// WarnLevel logs a message at warning level
@@ -106,10 +108,10 @@
 	Warningf(string, ...interface{})
 
 	// V reports whether verbosity level l is at least the requested verbose level.
-	V(l int) bool
+	V(l LogLevel) bool
 
 	//Returns the log level of this specific logger
-	GetLogLevel() int
+	GetLogLevel() LogLevel
 }
 
 // Fields is used as key-value pairs for structured logging
@@ -127,7 +129,7 @@
 	packageName string
 }
 
-func intToAtomicLevel(l int) zp.AtomicLevel {
+func logLevelToAtomicLevel(l LogLevel) zp.AtomicLevel {
 	switch l {
 	case DebugLevel:
 		return zp.NewAtomicLevelAt(zc.DebugLevel)
@@ -143,7 +145,7 @@
 	return zp.NewAtomicLevelAt(zc.ErrorLevel)
 }
 
-func intToLevel(l int) zc.Level {
+func logLevelToLevel(l LogLevel) zc.Level {
 	switch l {
 	case DebugLevel:
 		return zc.DebugLevel
@@ -159,7 +161,7 @@
 	return zc.ErrorLevel
 }
 
-func levelToInt(l zc.Level) int {
+func levelToLogLevel(l zc.Level) LogLevel {
 	switch l {
 	case zc.DebugLevel:
 		return DebugLevel
@@ -175,25 +177,41 @@
 	return ErrorLevel
 }
 
-func StringToInt(l string) int {
-	switch l {
+func StringToLogLevel(l string) (LogLevel, error) {
+	switch strings.ToUpper(l) {
 	case "DEBUG":
-		return DebugLevel
+		return DebugLevel, nil
 	case "INFO":
-		return InfoLevel
+		return InfoLevel, nil
 	case "WARN":
-		return WarnLevel
+		return WarnLevel, nil
 	case "ERROR":
-		return ErrorLevel
+		return ErrorLevel, nil
 	case "FATAL":
-		return FatalLevel
+		return FatalLevel, nil
 	}
-	return ErrorLevel
+	return 0, errors.New("Given LogLevel is invalid : " + l)
 }
 
-func getDefaultConfig(outputType string, level int, defaultFields Fields) zp.Config {
+func LogLevelToString(l LogLevel) (string, error) {
+	switch l {
+	case DebugLevel:
+		return "DEBUG", nil
+	case InfoLevel:
+		return "INFO", nil
+	case WarnLevel:
+		return "WARN", nil
+	case ErrorLevel:
+		return "ERROR", nil
+	case FatalLevel:
+		return "FATAL", nil
+	}
+	return "", errors.New("Given LogLevel is invalid " + string(l))
+}
+
+func getDefaultConfig(outputType string, level LogLevel, defaultFields Fields) zp.Config {
 	return zp.Config{
-		Level:            intToAtomicLevel(level),
+		Level:            logLevelToAtomicLevel(level),
 		Encoding:         outputType,
 		Development:      true,
 		OutputPaths:      []string{"stdout"},
@@ -203,6 +221,7 @@
 			LevelKey:       "level",
 			MessageKey:     "msg",
 			TimeKey:        "ts",
+			CallerKey:      "caller",
 			StacktraceKey:  "stacktrace",
 			LineEnding:     zc.DefaultLineEnding,
 			EncodeLevel:    zc.LowercaseLevelEncoder,
@@ -215,11 +234,11 @@
 
 // SetLogger needs to be invoked before the logger API can be invoked.  This function
 // initialize the default logger (zap's sugaredlogger)
-func SetDefaultLogger(outputType string, level int, defaultFields Fields) (Logger, error) {
+func SetDefaultLogger(outputType string, level LogLevel, defaultFields Fields) (Logger, error) {
 	// Build a custom config using zap
 	cfg = getDefaultConfig(outputType, level, defaultFields)
 
-	l, err := cfg.Build()
+	l, err := cfg.Build(zp.AddCallerSkip(1))
 	if err != nil {
 		return nil, err
 	}
@@ -241,7 +260,7 @@
 // be available to it, notably log tracing with filename.functionname.linenumber annotation.
 //
 // pkgNames parameter should be used for testing only as this function detects the caller's package.
-func AddPackage(outputType string, level int, defaultFields Fields, pkgNames ...string) (Logger, error) {
+func AddPackage(outputType string, level LogLevel, defaultFields Fields, pkgNames ...string) (Logger, error) {
 	if cfgs == nil {
 		cfgs = make(map[string]zp.Config)
 	}
@@ -264,7 +283,7 @@
 
 	cfgs[pkgName] = getDefaultConfig(outputType, level, defaultFields)
 
-	l, err := cfgs[pkgName].Build()
+	l, err := cfgs[pkgName].Build(zp.AddCallerSkip(1))
 	if err != nil {
 		return nil, err
 	}
@@ -286,16 +305,14 @@
 			}
 			cfg.InitialFields[k] = v
 		}
-		l, err := cfg.Build()
+		l, err := cfg.Build(zp.AddCallerSkip(1))
 		if err != nil {
 			return err
 		}
 
-		loggers[pkgName] = &logger{
-			log:         l.Sugar(),
-			parent:      l,
-			packageName: pkgName,
-		}
+		// Update the existing zap logger instance
+		loggers[pkgName].log = l.Sugar()
+		loggers[pkgName].parent = l
 	}
 	return nil
 }
@@ -311,19 +328,16 @@
 	return keys
 }
 
-// UpdateLogger deletes the logger associated with a caller's package and creates a new logger with the
-// defaultFields.  If a calling package is holding on to a Logger reference obtained from AddPackage invocation, then
-// that package needs to invoke UpdateLogger if it needs to make changes to the default fields and obtain a new logger
-// reference
-func UpdateLogger(defaultFields Fields) (Logger, error) {
+// UpdateLogger updates the logger associated with a caller's package with supplied defaultFields
+func UpdateLogger(defaultFields Fields) error {
 	pkgName, _, _, _ := getCallerInfo()
 	if _, exist := loggers[pkgName]; !exist {
-		return nil, errors.New(fmt.Sprintf("package-%s-not-registered", pkgName))
+		return fmt.Errorf("package-%s-not-registered", pkgName)
 	}
 
 	// Build a new logger
 	if _, exist := cfgs[pkgName]; !exist {
-		return nil, errors.New(fmt.Sprintf("config-%s-not-registered", pkgName))
+		return fmt.Errorf("config-%s-not-registered", pkgName)
 	}
 
 	cfg := cfgs[pkgName]
@@ -333,21 +347,19 @@
 		}
 		cfg.InitialFields[k] = v
 	}
-	l, err := cfg.Build()
+	l, err := cfg.Build(zp.AddCallerSkip(1))
 	if err != nil {
-		return nil, err
+		return err
 	}
 
-	// Set the logger
-	loggers[pkgName] = &logger{
-		log:         l.Sugar(),
-		parent:      l,
-		packageName: pkgName,
-	}
-	return loggers[pkgName], nil
+	// Update the existing zap logger instance
+	loggers[pkgName].log = l.Sugar()
+	loggers[pkgName].parent = l
+
+	return nil
 }
 
-func setLevel(cfg zp.Config, level int) {
+func setLevel(cfg zp.Config, level LogLevel) {
 	switch level {
 	case DebugLevel:
 		cfg.Level.SetLevel(zc.DebugLevel)
@@ -366,7 +378,7 @@
 
 //SetPackageLogLevel dynamically sets the log level of a given package to level.  This is typically invoked at an
 // application level during debugging
-func SetPackageLogLevel(packageName string, level int) {
+func SetPackageLogLevel(packageName string, level LogLevel) {
 	// Get proper config
 	if cfg, ok := cfgs[packageName]; ok {
 		setLevel(cfg, level)
@@ -374,7 +386,7 @@
 }
 
 //SetAllLogLevel sets the log level of all registered packages to level
-func SetAllLogLevel(level int) {
+func SetAllLogLevel(level LogLevel) {
 	// Get proper config
 	for _, cfg := range cfgs {
 		setLevel(cfg, level)
@@ -382,7 +394,7 @@
 }
 
 //GetPackageLogLevel returns the current log level of a package.
-func GetPackageLogLevel(packageName ...string) (int, error) {
+func GetPackageLogLevel(packageName ...string) (LogLevel, error) {
 	var name string
 	if len(packageName) == 1 {
 		name = packageName[0]
@@ -390,21 +402,21 @@
 		name, _, _, _ = getCallerInfo()
 	}
 	if cfg, ok := cfgs[name]; ok {
-		return levelToInt(cfg.Level.Level()), nil
+		return levelToLogLevel(cfg.Level.Level()), nil
 	}
-	return 0, errors.New(fmt.Sprintf("unknown-package-%s", name))
+	return 0, fmt.Errorf("unknown-package-%s", name)
 }
 
 //GetDefaultLogLevel gets the log level used for packages that don't have specific loggers
-func GetDefaultLogLevel() int {
-	return levelToInt(cfg.Level.Level())
+func GetDefaultLogLevel() LogLevel {
+	return levelToLogLevel(cfg.Level.Level())
 }
 
 //SetLogLevel sets the log level for the logger corresponding to the caller's package
-func SetLogLevel(level int) error {
+func SetLogLevel(level LogLevel) error {
 	pkgName, _, _, _ := getCallerInfo()
 	if _, exist := cfgs[pkgName]; !exist {
-		return errors.New(fmt.Sprintf("unregistered-package-%s", pkgName))
+		return fmt.Errorf("unregistered-package-%s", pkgName)
 	}
 	cfg := cfgs[pkgName]
 	setLevel(cfg, level)
@@ -412,7 +424,7 @@
 }
 
 //SetDefaultLogLevel sets the log level used for packages that don't have specific loggers
-func SetDefaultLogLevel(level int) {
+func SetDefaultLogLevel(level LogLevel) {
 	setLevel(cfg, level)
 }
 
@@ -641,13 +653,13 @@
 }
 
 // V reports whether verbosity level l is at least the requested verbose level.
-func (l logger) V(level int) bool {
-	return l.parent.Core().Enabled(intToLevel(level))
+func (l logger) V(level LogLevel) bool {
+	return l.parent.Core().Enabled(logLevelToLevel(level))
 }
 
 // GetLogLevel returns the current level of the logger
-func (l logger) GetLogLevel() int {
-	return levelToInt(cfgs[l.packageName].Level.Level())
+func (l logger) GetLogLevel() LogLevel {
+	return levelToLogLevel(cfgs[l.packageName].Level.Level())
 }
 
 // With returns a logger initialized with the key-value pairs
@@ -776,11 +788,11 @@
 }
 
 // V reports whether verbosity level l is at least the requested verbose level.
-func V(level int) bool {
+func V(level LogLevel) bool {
 	return getPackageLevelLogger().V(level)
 }
 
 //GetLogLevel returns the log level of the invoking package
-func GetLogLevel() int {
+func GetLogLevel() LogLevel {
 	return getPackageLevelLogger().GetLogLevel()
 }
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/probe/probe.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/probe/probe.go
index 9f00953..932c287 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/probe/probe.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/probe/probe.go
@@ -231,15 +231,26 @@
 	p.mutex.RLock()
 	defer p.mutex.RUnlock()
 	w.Header().Set("Content-Type", "application/json")
-	w.Write([]byte("{"))
+	if _, err := w.Write([]byte("{")); err != nil {
+		log.Errorw("write-response", log.Fields{"error": err})
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
 	comma := ""
 	for c, s := range p.status {
-		w.Write([]byte(fmt.Sprintf("%s\"%s\": \"%s\"", comma, c, s.String())))
+		if _, err := w.Write([]byte(fmt.Sprintf("%s\"%s\": \"%s\"", comma, c, s.String()))); err != nil {
+			log.Errorw("write-response", log.Fields{"error": err})
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
 		comma = ", "
 	}
-	w.Write([]byte("}"))
+	if _, err := w.Write([]byte("}")); err != nil {
+		log.Errorw("write-response", log.Fields{"error": err})
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
 	w.WriteHeader(http.StatusOK)
-
 }
 
 // ListenAndServe implements 3 HTTP endpoints on the given port for healthz, readz, and detailz. Returns only on error
diff --git a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/adapter.pb.go b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/adapter.pb.go
index 93bf21b..1f24221 100644
--- a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/adapter.pb.go
+++ b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/adapter.pb.go
@@ -7,6 +7,7 @@
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
 	any "github.com/golang/protobuf/ptypes/any"
+	timestamp "github.com/golang/protobuf/ptypes/timestamp"
 	common "github.com/opencord/voltha-protos/v3/go/common"
 	math "math"
 )
@@ -83,9 +84,11 @@
 	// Custom descriptors and custom configuration
 	AdditionalDescription *any.Any `protobuf:"bytes,64,opt,name=additional_description,json=additionalDescription,proto3" json:"additional_description,omitempty"`
 	LogicalDeviceIds      []string `protobuf:"bytes,4,rep,name=logical_device_ids,json=logicalDeviceIds,proto3" json:"logical_device_ids,omitempty"`
-	XXX_NoUnkeyedLiteral  struct{} `json:"-"`
-	XXX_unrecognized      []byte   `json:"-"`
-	XXX_sizecache         int32    `json:"-"`
+	// timestamp when the adapter last sent a message to the core
+	LastCommunication    *timestamp.Timestamp `protobuf:"bytes,5,opt,name=last_communication,json=lastCommunication,proto3" json:"last_communication,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
+	XXX_unrecognized     []byte               `json:"-"`
+	XXX_sizecache        int32                `json:"-"`
 }
 
 func (m *Adapter) Reset()         { *m = Adapter{} }
@@ -155,6 +158,13 @@
 	return nil
 }
 
+func (m *Adapter) GetLastCommunication() *timestamp.Timestamp {
+	if m != nil {
+		return m.LastCommunication
+	}
+	return nil
+}
+
 type Adapters struct {
 	Items                []*Adapter `protobuf:"bytes,1,rep,name=items,proto3" json:"items,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
@@ -203,30 +213,33 @@
 func init() { proto.RegisterFile("voltha_protos/adapter.proto", fileDescriptor_7e998ce153307274) }
 
 var fileDescriptor_7e998ce153307274 = []byte{
-	// 397 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x7c, 0x92, 0x41, 0x8e, 0xda, 0x30,
-	0x14, 0x86, 0x95, 0xd0, 0xc9, 0x0c, 0x1e, 0x4d, 0x4b, 0xdd, 0x82, 0x52, 0x2a, 0xd4, 0x08, 0xa9,
-	0x52, 0x16, 0xc5, 0x51, 0xe1, 0x02, 0x85, 0xb2, 0xa9, 0xc4, 0x2a, 0x42, 0x5d, 0x74, 0x13, 0x85,
-	0xd8, 0x18, 0x4b, 0x8e, 0x5f, 0x14, 0x87, 0x48, 0x9c, 0xa0, 0xeb, 0x1e, 0xac, 0xf7, 0xe8, 0x09,
-	0xba, 0xae, 0xb0, 0x1d, 0x01, 0x5d, 0xcc, 0x2a, 0x7a, 0xff, 0xf7, 0xbf, 0xf7, 0x7e, 0x3b, 0x46,
-	0xef, 0x5b, 0x90, 0xcd, 0x21, 0xcf, 0xaa, 0x1a, 0x1a, 0xd0, 0x49, 0x4e, 0xf3, 0xaa, 0x61, 0x35,
-	0x31, 0x25, 0x0e, 0x2c, 0x1c, 0xbf, 0xe3, 0x00, 0x5c, 0xb2, 0xc4, 0xa8, 0xbb, 0xe3, 0x3e, 0xc9,
-	0xd5, 0xc9, 0x5a, 0xc6, 0xe3, 0xdb, 0xfe, 0x02, 0xca, 0x12, 0x94, 0x63, 0xe1, 0x2d, 0x2b, 0x59,
-	0x93, 0x5b, 0x32, 0xfd, 0xe9, 0xa1, 0xa7, 0xa5, 0x5d, 0xf5, 0x15, 0xd4, 0x5e, 0x70, 0xbc, 0x40,
-	0x7d, 0x09, 0x3c, 0x93, 0xac, 0x65, 0x32, 0xf4, 0x22, 0x2f, 0x7e, 0x39, 0x1f, 0x11, 0x37, 0x6d,
-	0x03, 0x7c, 0x73, 0xd6, 0xc9, 0xf6, 0x54, 0x31, 0x9d, 0x3e, 0x48, 0x57, 0xe3, 0x25, 0x7a, 0x9d,
-	0x53, 0x2a, 0x1a, 0x01, 0x2a, 0x97, 0x59, 0x61, 0x26, 0x85, 0x5f, 0x22, 0x2f, 0x7e, 0x9c, 0xbf,
-	0x25, 0x36, 0x33, 0xe9, 0x32, 0x93, 0xa5, 0x3a, 0xa5, 0x83, 0x8b, 0xdd, 0xee, 0x9d, 0xfe, 0xf2,
-	0xd1, 0xbd, 0x4b, 0x82, 0x87, 0xc8, 0x17, 0xd4, 0x2c, 0xef, 0xaf, 0xee, 0xfe, 0xfc, 0xfd, 0x3d,
-	0xf1, 0x52, 0x5f, 0x50, 0x3c, 0x41, 0x41, 0xcb, 0x14, 0x85, 0x3a, 0xf4, 0xaf, 0x91, 0x13, 0xf1,
-	0x07, 0x74, 0xdf, 0xb2, 0x5a, 0x0b, 0x50, 0x61, 0xef, 0x9a, 0x77, 0x2a, 0x9e, 0xa1, 0xc0, 0x45,
-	0x1b, 0x98, 0x68, 0x43, 0x62, 0xef, 0x85, 0xdc, 0xdc, 0x40, 0xea, 0x4c, 0x38, 0x45, 0xa3, 0xab,
-	0x43, 0x51, 0xa6, 0x8b, 0x5a, 0x54, 0xe7, 0xea, 0xb9, 0x93, 0x75, 0x4b, 0x87, 0x97, 0xd6, 0xf5,
-	0xa5, 0x13, 0x7f, 0x42, 0x58, 0x02, 0x17, 0x85, 0x19, 0xd8, 0x8a, 0x82, 0x65, 0x82, 0xea, 0xf0,
-	0x45, 0xd4, 0x8b, 0xfb, 0xe9, 0xc0, 0x91, 0xb5, 0x01, 0xdf, 0xa8, 0x9e, 0x7e, 0x46, 0x0f, 0x2e,
-	0x9a, 0xc6, 0x1f, 0xd1, 0x9d, 0x68, 0x58, 0xa9, 0x43, 0x2f, 0xea, 0xc5, 0x8f, 0xf3, 0x57, 0xff,
-	0x65, 0x4f, 0x2d, 0x5d, 0x6d, 0xd1, 0x1b, 0xa8, 0x39, 0x81, 0x8a, 0xa9, 0x02, 0x6a, 0xea, 0x5c,
-	0xab, 0xa7, 0xef, 0xe6, 0xeb, 0xcc, 0x3f, 0x08, 0x17, 0xcd, 0xe1, 0xb8, 0x3b, 0xff, 0xd7, 0xa4,
-	0xb3, 0x26, 0xd6, 0x3a, 0x73, 0x8f, 0xa4, 0x5d, 0x24, 0x1c, 0x9c, 0xb6, 0x0b, 0x8c, 0xb8, 0xf8,
-	0x17, 0x00, 0x00, 0xff, 0xff, 0x41, 0x59, 0x44, 0x43, 0xa5, 0x02, 0x00, 0x00,
+	// 439 bytes of a gzipped FileDescriptorProto
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+	0xb1, 0x4a, 0xa8, 0x11, 0x03, 0x00, 0x00,
 }
diff --git a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go
index 7df3e27..7f6a921 100644
--- a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go
+++ b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go
@@ -6,6 +6,7 @@
 import (
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
+	timestamp "github.com/golang/protobuf/ptypes/timestamp"
 	_ "github.com/opencord/voltha-protos/v3/go/common"
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	math "math"
@@ -876,11 +877,13 @@
 	// Overall impact of the alarm on the system
 	Severity AlarmEventSeverity_Types `protobuf:"varint,5,opt,name=severity,proto3,enum=voltha.AlarmEventSeverity_Types" json:"severity,omitempty"`
 	// Timestamp at which the alarm was first raised
-	RaisedTs float32 `protobuf:"fixed32,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
+	// TODO: Is this obsolete? Eventheader already has a raised_ts
+	RaisedTs *timestamp.Timestamp `protobuf:"bytes,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
 	// Timestamp at which the alarm was reported
-	ReportedTs float32 `protobuf:"fixed32,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
+	// TODO: Is this obsolete? Eventheader already has a reported_ts
+	ReportedTs *timestamp.Timestamp `protobuf:"bytes,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
 	// Timestamp at which the alarm has changed since it was raised
-	ChangedTs float32 `protobuf:"fixed32,8,opt,name=changed_ts,json=changedTs,proto3" json:"changed_ts,omitempty"`
+	ChangedTs *timestamp.Timestamp `protobuf:"bytes,8,opt,name=changed_ts,json=changedTs,proto3" json:"changed_ts,omitempty"`
 	// Identifier of the originating resource of the alarm
 	ResourceId string `protobuf:"bytes,9,opt,name=resource_id,json=resourceId,proto3" json:"resource_id,omitempty"`
 	// Textual explanation of the alarm
@@ -956,25 +959,25 @@
 	return AlarmEventSeverity_INDETERMINATE
 }
 
-func (m *AlarmEvent) GetRaisedTs() float32 {
+func (m *AlarmEvent) GetRaisedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.RaisedTs
 	}
-	return 0
+	return nil
 }
 
-func (m *AlarmEvent) GetReportedTs() float32 {
+func (m *AlarmEvent) GetReportedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.ReportedTs
 	}
-	return 0
+	return nil
 }
 
-func (m *AlarmEvent) GetChangedTs() float32 {
+func (m *AlarmEvent) GetChangedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.ChangedTs
 	}
-	return 0
+	return nil
 }
 
 func (m *AlarmEvent) GetResourceId() string {
@@ -1201,16 +1204,16 @@
 	// the event was first raised from the source entity.
 	// If the source entity doesn't send the raised_ts, this shall be set
 	// to timestamp when the event was received.
-	RaisedTs float32 `protobuf:"fixed32,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
+	RaisedTs *timestamp.Timestamp `protobuf:"bytes,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
 	// Timestamp at which the event was reported.
 	// This represents the UTC time stamp since epoch (in seconds) when the
 	// the event was reported (this time stamp is >= raised_ts).
 	// If the source entity that reported this event doesn't send the
 	// reported_ts, this shall be set to the same value as raised_ts.
-	ReportedTs           float32  `protobuf:"fixed32,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	ReportedTs           *timestamp.Timestamp `protobuf:"bytes,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
+	XXX_unrecognized     []byte               `json:"-"`
+	XXX_sizecache        int32                `json:"-"`
 }
 
 func (m *EventHeader) Reset()         { *m = EventHeader{} }
@@ -1273,18 +1276,18 @@
 	return ""
 }
 
-func (m *EventHeader) GetRaisedTs() float32 {
+func (m *EventHeader) GetRaisedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.RaisedTs
 	}
-	return 0
+	return nil
 }
 
-func (m *EventHeader) GetReportedTs() float32 {
+func (m *EventHeader) GetReportedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.ReportedTs
 	}
-	return 0
+	return nil
 }
 
 //
@@ -1450,89 +1453,91 @@
 func init() { proto.RegisterFile("voltha_protos/events.proto", fileDescriptor_e63e6c07044fd2c4) }
 
 var fileDescriptor_e63e6c07044fd2c4 = []byte{
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diff --git a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/voltha.pb.go b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/voltha.pb.go
index c2edc2d..f6512d6 100644
--- a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/voltha.pb.go
+++ b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/voltha.pb.go
@@ -2015,159 +2015,162 @@
 func init() { proto.RegisterFile("voltha_protos/voltha.proto", fileDescriptor_e084f1a60ce7016c) }
 
 var fileDescriptor_e084f1a60ce7016c = []byte{
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+	0xad, 0x4f, 0x8b, 0xb1, 0x3b, 0xff, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x70, 0x28, 0xbe, 0x4c, 0xcd,
+	0x20, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -2309,6 +2312,8 @@
 	// Simulate an Alarm
 	SimulateAlarm(ctx context.Context, in *SimulateAlarmRequest, opts ...grpc.CallOption) (*common.OperationResp, error)
 	Subscribe(ctx context.Context, in *OfAgentSubscriber, opts ...grpc.CallOption) (*OfAgentSubscriber, error)
+	EnablePort(ctx context.Context, in *Port, opts ...grpc.CallOption) (*empty.Empty, error)
+	DisablePort(ctx context.Context, in *Port, opts ...grpc.CallOption) (*empty.Empty, error)
 }
 
 type volthaServiceClient struct {
@@ -2921,6 +2926,24 @@
 	return out, nil
 }
 
+func (c *volthaServiceClient) EnablePort(ctx context.Context, in *Port, opts ...grpc.CallOption) (*empty.Empty, error) {
+	out := new(empty.Empty)
+	err := c.cc.Invoke(ctx, "/voltha.VolthaService/EnablePort", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volthaServiceClient) DisablePort(ctx context.Context, in *Port, opts ...grpc.CallOption) (*empty.Empty, error) {
+	out := new(empty.Empty)
+	err := c.cc.Invoke(ctx, "/voltha.VolthaService/DisablePort", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // VolthaServiceServer is the server API for VolthaService service.
 type VolthaServiceServer interface {
 	// Get more information on a given physical device
@@ -3050,6 +3073,8 @@
 	// Simulate an Alarm
 	SimulateAlarm(context.Context, *SimulateAlarmRequest) (*common.OperationResp, error)
 	Subscribe(context.Context, *OfAgentSubscriber) (*OfAgentSubscriber, error)
+	EnablePort(context.Context, *Port) (*empty.Empty, error)
+	DisablePort(context.Context, *Port) (*empty.Empty, error)
 }
 
 func RegisterVolthaServiceServer(s *grpc.Server, srv VolthaServiceServer) {
@@ -4132,6 +4157,42 @@
 	return interceptor(ctx, in, info, handler)
 }
 
+func _VolthaService_EnablePort_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Port)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolthaServiceServer).EnablePort(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/voltha.VolthaService/EnablePort",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolthaServiceServer).EnablePort(ctx, req.(*Port))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolthaService_DisablePort_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Port)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolthaServiceServer).DisablePort(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/voltha.VolthaService/DisablePort",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolthaServiceServer).DisablePort(ctx, req.(*Port))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _VolthaService_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "voltha.VolthaService",
 	HandlerType: (*VolthaServiceServer)(nil),
@@ -4360,6 +4421,14 @@
 			MethodName: "Subscribe",
 			Handler:    _VolthaService_Subscribe_Handler,
 		},
+		{
+			MethodName: "EnablePort",
+			Handler:    _VolthaService_EnablePort_Handler,
+		},
+		{
+			MethodName: "DisablePort",
+			Handler:    _VolthaService_DisablePort_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{