diff --git a/vendor/github.com/opencord/voltha-lib-go/v4/pkg/ponresourcemanager/ponresourcemanager.go b/vendor/github.com/opencord/voltha-lib-go/v4/pkg/ponresourcemanager/ponresourcemanager.go
new file mode 100644
index 0000000..bbfebe3
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-lib-go/v4/pkg/ponresourcemanager/ponresourcemanager.go
@@ -0,0 +1,1334 @@
+/*
+ * Copyright 2019-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 ponresourcemanager
+
+import (
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"time"
+
+	bitmap "github.com/boljen/go-bitmap"
+	"github.com/opencord/voltha-lib-go/v4/pkg/db"
+	"github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/v4/pkg/log"
+	tp "github.com/opencord/voltha-lib-go/v4/pkg/techprofile"
+)
+
+const (
+	//Constants to identify resource pool
+	UNI_ID     = "UNI_ID"
+	ONU_ID     = "ONU_ID"
+	ALLOC_ID   = "ALLOC_ID"
+	GEMPORT_ID = "GEMPORT_ID"
+	FLOW_ID    = "FLOW_ID"
+
+	//Constants for passing command line arugments
+	OLT_MODEL_ARG = "--olt_model"
+	PATH_PREFIX   = "service/voltha/resource_manager/{%s}"
+
+	/*The path under which configuration data is stored is defined as technology/device agnostic.
+	  That means the path does not include any specific technology/device variable. Using technology/device
+	  agnostic path also makes northbound applications, that need to write to this path,
+	  technology/device agnostic.
+
+	  Default kv client of PonResourceManager reads from/writes to PATH_PREFIX defined above.
+	  That is why, an additional kv client (named KVStoreForConfig) is defined to read from the config path.
+	*/
+	PATH_PREFIX_FOR_CONFIG = "service/voltha/resource_manager/config"
+	/*The resource ranges for a given device model should be placed
+	  at 'resource_manager/<technology>/resource_ranges/<olt_model_type>'
+	  path on the KV store.
+	  If Resource Range parameters are to be read from the external KV store,
+	  they are expected to be stored in the following format.
+	  Note: All parameters are MANDATORY for now.
+	  constants used as keys to reference the resource range parameters from
+	  and external KV store.
+	*/
+	UNI_ID_START_IDX      = "uni_id_start"
+	UNI_ID_END_IDX        = "uni_id_end"
+	ONU_ID_START_IDX      = "onu_id_start"
+	ONU_ID_END_IDX        = "onu_id_end"
+	ONU_ID_SHARED_IDX     = "onu_id_shared"
+	ALLOC_ID_START_IDX    = "alloc_id_start"
+	ALLOC_ID_END_IDX      = "alloc_id_end"
+	ALLOC_ID_SHARED_IDX   = "alloc_id_shared"
+	GEMPORT_ID_START_IDX  = "gemport_id_start"
+	GEMPORT_ID_END_IDX    = "gemport_id_end"
+	GEMPORT_ID_SHARED_IDX = "gemport_id_shared"
+	FLOW_ID_START_IDX     = "flow_id_start"
+	FLOW_ID_END_IDX       = "flow_id_end"
+	FLOW_ID_SHARED_IDX    = "flow_id_shared"
+	NUM_OF_PON_PORT       = "pon_ports"
+
+	/*
+	   The KV store backend is initialized with a path prefix and we need to
+	   provide only the suffix.
+	*/
+	PON_RESOURCE_RANGE_CONFIG_PATH = "resource_ranges/%s"
+
+	//resource path suffix
+	//Path on the KV store for storing alloc id ranges and resource pool for a given interface
+	//Format: <device_id>/alloc_id_pool/<pon_intf_id>
+	ALLOC_ID_POOL_PATH = "{%s}/alloc_id_pool/{%d}"
+	//Path on the KV store for storing gemport id ranges and resource pool for a given interface
+	//Format: <device_id>/gemport_id_pool/<pon_intf_id>
+	GEMPORT_ID_POOL_PATH = "{%s}/gemport_id_pool/{%d}"
+	//Path on the KV store for storing onu id ranges and resource pool for a given interface
+	//Format: <device_id>/onu_id_pool/<pon_intf_id>
+	ONU_ID_POOL_PATH = "{%s}/onu_id_pool/{%d}"
+	//Path on the KV store for storing flow id ranges and resource pool for a given interface
+	//Format: <device_id>/flow_id_pool/<pon_intf_id>
+	FLOW_ID_POOL_PATH = "{%s}/flow_id_pool/{%d}"
+
+	//Path on the KV store for storing list of alloc IDs for a given ONU
+	//Format: <device_id>/<(pon_intf_id, onu_id)>/alloc_ids
+	ALLOC_ID_RESOURCE_MAP_PATH = "{%s}/{%s}/alloc_ids"
+
+	//Path on the KV store for storing list of gemport IDs for a given ONU
+	//Format: <device_id>/<(pon_intf_id, onu_id)>/gemport_ids
+	GEMPORT_ID_RESOURCE_MAP_PATH = "{%s}/{%s}/gemport_ids"
+
+	//Path on the KV store for storing list of Flow IDs for a given ONU
+	//Format: <device_id>/<(pon_intf_id, onu_id)>/flow_ids
+	FLOW_ID_RESOURCE_MAP_PATH = "{%s}/{%s}/flow_ids"
+
+	//Flow Id info: Use to store more metadata associated with the flow_id
+	//Format: <device_id>/<(pon_intf_id, onu_id)>/flow_id_info/<flow_id>
+	FLOW_ID_INFO_PATH = "{%s}/{%s}/flow_id_info/{%d}"
+
+	//path on the kvstore to store onugem info map
+	//format: <device-id>/onu_gem_info/<intfid>
+	ONU_GEM_INFO_PATH = "{%s}/onu_gem_info/{%d}" // onu_gem/<(intfid)>
+
+	//Constants for internal usage.
+	PON_INTF_ID     = "pon_intf_id"
+	START_IDX       = "start_idx"
+	END_IDX         = "end_idx"
+	POOL            = "pool"
+	NUM_OF_PON_INTF = 16
+
+	KVSTORE_RETRY_TIMEOUT = 5 * time.Second
+	//Path on the KV store for storing reserved gem ports
+	//Format: reserved_gemport_ids
+	RESERVED_GEMPORT_IDS_PATH = "reserved_gemport_ids"
+)
+
+//type ResourceTypeIndex string
+//type ResourceType string
+
+type PONResourceManager struct {
+	//Implements APIs to initialize/allocate/release alloc/gemport/onu IDs.
+	Technology       string
+	DeviceType       string
+	DeviceID         string
+	Backend          string // ETCD, or consul
+	Address          string // address of the KV store
+	OLTModel         string
+	KVStore          *db.Backend
+	KVStoreForConfig *db.Backend
+	TechProfileMgr   tp.TechProfileIf // create object of *tp.TechProfileMgr
+
+	// Below attribute, pon_resource_ranges, should be initialized
+	// by reading from KV store.
+	PonResourceRanges  map[string]interface{}
+	SharedResourceMgrs map[string]*PONResourceManager
+	SharedIdxByType    map[string]string
+	IntfIDs            []uint32 // list of pon interface IDs
+	Globalorlocal      string
+}
+
+func newKVClient(ctx context.Context, storeType string, address string, timeout time.Duration) (kvstore.Client, error) {
+	logger.Infow(ctx, "kv-store-type", log.Fields{"store": storeType})
+	switch storeType {
+	case "consul":
+		return kvstore.NewConsulClient(ctx, address, timeout)
+	case "etcd":
+		return kvstore.NewEtcdClient(ctx, address, timeout, log.WarnLevel)
+	}
+	return nil, errors.New("unsupported-kv-store")
+}
+
+func SetKVClient(ctx context.Context, Technology string, Backend string, Addr string, configClient bool) *db.Backend {
+	// TODO : Make sure direct call to NewBackend is working fine with backend , currently there is some
+	// issue between kv store and backend , core is not calling NewBackend directly
+	kvClient, err := newKVClient(ctx, Backend, Addr, KVSTORE_RETRY_TIMEOUT)
+	if err != nil {
+		logger.Fatalw(ctx, "Failed to init KV client\n", log.Fields{"err": err})
+		return nil
+	}
+
+	var pathPrefix string
+	if configClient {
+		pathPrefix = PATH_PREFIX_FOR_CONFIG
+	} else {
+		pathPrefix = fmt.Sprintf(PATH_PREFIX, Technology)
+	}
+
+	kvbackend := &db.Backend{
+		Client:     kvClient,
+		StoreType:  Backend,
+		Address:    Addr,
+		Timeout:    KVSTORE_RETRY_TIMEOUT,
+		PathPrefix: pathPrefix}
+
+	return kvbackend
+}
+
+// NewPONResourceManager creates a new PON resource manager.
+func NewPONResourceManager(ctx context.Context, Technology string, DeviceType string, DeviceID string, Backend string, Address string) (*PONResourceManager, error) {
+	var PONMgr PONResourceManager
+	PONMgr.Technology = Technology
+	PONMgr.DeviceType = DeviceType
+	PONMgr.DeviceID = DeviceID
+	PONMgr.Backend = Backend
+	PONMgr.Address = Address
+	PONMgr.KVStore = SetKVClient(ctx, Technology, Backend, Address, false)
+	if PONMgr.KVStore == nil {
+		logger.Error(ctx, "KV Client initilization failed")
+		return nil, errors.New("Failed to init KV client")
+	}
+	// init kv client to read from the config path
+	PONMgr.KVStoreForConfig = SetKVClient(ctx, Technology, Backend, Address, true)
+	if PONMgr.KVStoreForConfig == nil {
+		logger.Error(ctx, "KV Config Client initilization failed")
+		return nil, errors.New("Failed to init KV Config client")
+	}
+	// Initialize techprofile for this technology
+	if PONMgr.TechProfileMgr, _ = tp.NewTechProfile(ctx, &PONMgr, Backend, Address); PONMgr.TechProfileMgr == nil {
+		logger.Error(ctx, "Techprofile initialization failed")
+		return nil, errors.New("Failed to init tech profile")
+	}
+	PONMgr.PonResourceRanges = make(map[string]interface{})
+	PONMgr.SharedResourceMgrs = make(map[string]*PONResourceManager)
+	PONMgr.SharedIdxByType = make(map[string]string)
+	PONMgr.SharedIdxByType[ONU_ID] = ONU_ID_SHARED_IDX
+	PONMgr.SharedIdxByType[ALLOC_ID] = ALLOC_ID_SHARED_IDX
+	PONMgr.SharedIdxByType[GEMPORT_ID] = GEMPORT_ID_SHARED_IDX
+	PONMgr.SharedIdxByType[FLOW_ID] = FLOW_ID_SHARED_IDX
+	PONMgr.IntfIDs = make([]uint32, NUM_OF_PON_INTF)
+	PONMgr.OLTModel = DeviceType
+	return &PONMgr, nil
+}
+
+/*
+  Initialize PON resource ranges with config fetched from kv store.
+  return boolean: True if PON resource ranges initialized else false
+  Try to initialize the PON Resource Ranges from KV store based on the
+  OLT model key, if available
+*/
+
+func (PONRMgr *PONResourceManager) InitResourceRangesFromKVStore(ctx context.Context) bool {
+	//Initialize PON resource ranges with config fetched from kv store.
+	//:return boolean: True if PON resource ranges initialized else false
+	// Try to initialize the PON Resource Ranges from KV store based on the
+	// OLT model key, if available
+	if PONRMgr.OLTModel == "" {
+		logger.Error(ctx, "Failed to get OLT model")
+		return false
+	}
+	Path := fmt.Sprintf(PON_RESOURCE_RANGE_CONFIG_PATH, PONRMgr.OLTModel)
+	//get resource from kv store
+	Result, err := PONRMgr.KVStore.Get(ctx, Path)
+	if err != nil {
+		logger.Debugf(ctx, "Error in fetching resource %s from KV strore", Path)
+		return false
+	}
+	if Result == nil {
+		logger.Debug(ctx, "There may be no resources in the KV store in case of fresh bootup, return true")
+		return false
+	}
+	//update internal ranges from kv ranges. If there are missing
+	// values in the KV profile, continue to use the defaults
+	Value, err := ToByte(Result.Value)
+	if err != nil {
+		logger.Error(ctx, "Failed to convert kvpair to byte string")
+		return false
+	}
+	if err := json.Unmarshal(Value, &PONRMgr.PonResourceRanges); err != nil {
+		logger.Error(ctx, "Failed to Unmarshal json byte")
+		return false
+	}
+	logger.Debug(ctx, "Init resource ranges from kvstore success")
+	return true
+}
+
+func (PONRMgr *PONResourceManager) UpdateRanges(ctx context.Context, StartIDx string, StartID uint32, EndIDx string, EndID uint32,
+	SharedIDx string, SharedPoolID uint32, RMgr *PONResourceManager) {
+	/*
+	   Update the ranges for all reosurce type in the intermnal maps
+	   param: resource type start index
+	   param: start ID
+	   param: resource type end index
+	   param: end ID
+	   param: resource type shared index
+	   param: shared pool id
+	   param: global resource manager
+	*/
+	logger.Debugf(ctx, "update ranges for %s, %d", StartIDx, StartID)
+
+	if StartID != 0 {
+		if (PONRMgr.PonResourceRanges[StartIDx] == nil) || (PONRMgr.PonResourceRanges[StartIDx].(uint32) < StartID) {
+			PONRMgr.PonResourceRanges[StartIDx] = StartID
+		}
+	}
+	if EndID != 0 {
+		if (PONRMgr.PonResourceRanges[EndIDx] == nil) || (PONRMgr.PonResourceRanges[EndIDx].(uint32) > EndID) {
+			PONRMgr.PonResourceRanges[EndIDx] = EndID
+		}
+	}
+	//if SharedPoolID != 0 {
+	PONRMgr.PonResourceRanges[SharedIDx] = SharedPoolID
+	//}
+	if RMgr != nil {
+		PONRMgr.SharedResourceMgrs[SharedIDx] = RMgr
+	}
+}
+
+func (PONRMgr *PONResourceManager) InitDefaultPONResourceRanges(ctx context.Context,
+	ONUIDStart uint32,
+	ONUIDEnd uint32,
+	ONUIDSharedPoolID uint32,
+	AllocIDStart uint32,
+	AllocIDEnd uint32,
+	AllocIDSharedPoolID uint32,
+	GEMPortIDStart uint32,
+	GEMPortIDEnd uint32,
+	GEMPortIDSharedPoolID uint32,
+	FlowIDStart uint32,
+	FlowIDEnd uint32,
+	FlowIDSharedPoolID uint32,
+	UNIIDStart uint32,
+	UNIIDEnd uint32,
+	NoOfPONPorts uint32,
+	IntfIDs []uint32) bool {
+
+	/*Initialize default PON resource ranges
+
+	  :param onu_id_start_idx: onu id start index
+	  :param onu_id_end_idx: onu id end index
+	  :param onu_id_shared_pool_id: pool idx for id shared by all intfs or None for no sharing
+	  :param alloc_id_start_idx: alloc id start index
+	  :param alloc_id_end_idx: alloc id end index
+	  :param alloc_id_shared_pool_id: pool idx for alloc id shared by all intfs or None for no sharing
+	  :param gemport_id_start_idx: gemport id start index
+	  :param gemport_id_end_idx: gemport id end index
+	  :param gemport_id_shared_pool_id: pool idx for gemport id shared by all intfs or None for no sharing
+	  :param flow_id_start_idx: flow id start index
+	  :param flow_id_end_idx: flow id end index
+	  :param flow_id_shared_pool_id: pool idx for flow id shared by all intfs or None for no sharing
+	  :param num_of_pon_ports: number of PON ports
+	  :param intf_ids: interfaces serviced by this manager
+	*/
+	PONRMgr.UpdateRanges(ctx, ONU_ID_START_IDX, ONUIDStart, ONU_ID_END_IDX, ONUIDEnd, ONU_ID_SHARED_IDX, ONUIDSharedPoolID, nil)
+	PONRMgr.UpdateRanges(ctx, ALLOC_ID_START_IDX, AllocIDStart, ALLOC_ID_END_IDX, AllocIDEnd, ALLOC_ID_SHARED_IDX, AllocIDSharedPoolID, nil)
+	PONRMgr.UpdateRanges(ctx, GEMPORT_ID_START_IDX, GEMPortIDStart, GEMPORT_ID_END_IDX, GEMPortIDEnd, GEMPORT_ID_SHARED_IDX, GEMPortIDSharedPoolID, nil)
+	PONRMgr.UpdateRanges(ctx, FLOW_ID_START_IDX, FlowIDStart, FLOW_ID_END_IDX, FlowIDEnd, FLOW_ID_SHARED_IDX, FlowIDSharedPoolID, nil)
+	PONRMgr.UpdateRanges(ctx, UNI_ID_START_IDX, UNIIDStart, UNI_ID_END_IDX, UNIIDEnd, "", 0, nil)
+	logger.Debug(ctx, "Initialize default range values")
+	var i uint32
+	if IntfIDs == nil {
+		for i = 0; i < NoOfPONPorts; i++ {
+			PONRMgr.IntfIDs = append(PONRMgr.IntfIDs, i)
+		}
+	} else {
+		PONRMgr.IntfIDs = IntfIDs
+	}
+	return true
+}
+
+func (PONRMgr *PONResourceManager) InitDeviceResourcePool(ctx context.Context) error {
+
+	//Initialize resource pool for all PON ports.
+
+	logger.Debug(ctx, "Init resource ranges")
+
+	var err error
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[ONU_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if err = PONRMgr.InitResourceIDPool(ctx, Intf, ONU_ID,
+			PONRMgr.PonResourceRanges[ONU_ID_START_IDX].(uint32),
+			PONRMgr.PonResourceRanges[ONU_ID_END_IDX].(uint32)); err != nil {
+			logger.Error(ctx, "Failed to init ONU ID resource pool")
+			return err
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[ALLOC_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if err = PONRMgr.InitResourceIDPool(ctx, Intf, ALLOC_ID,
+			PONRMgr.PonResourceRanges[ALLOC_ID_START_IDX].(uint32),
+			PONRMgr.PonResourceRanges[ALLOC_ID_END_IDX].(uint32)); err != nil {
+			logger.Error(ctx, "Failed to init ALLOC ID resource pool ")
+			return err
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[GEMPORT_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if err = PONRMgr.InitResourceIDPool(ctx, Intf, GEMPORT_ID,
+			PONRMgr.PonResourceRanges[GEMPORT_ID_START_IDX].(uint32),
+			PONRMgr.PonResourceRanges[GEMPORT_ID_END_IDX].(uint32)); err != nil {
+			logger.Error(ctx, "Failed to init GEMPORT ID resource pool")
+			return err
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[FLOW_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if err = PONRMgr.InitResourceIDPool(ctx, Intf, FLOW_ID,
+			PONRMgr.PonResourceRanges[FLOW_ID_START_IDX].(uint32),
+			PONRMgr.PonResourceRanges[FLOW_ID_END_IDX].(uint32)); err != nil {
+			logger.Error(ctx, "Failed to init FLOW ID resource pool")
+			return err
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+	return err
+}
+
+func (PONRMgr *PONResourceManager) ClearDeviceResourcePool(ctx context.Context) error {
+
+	//Clear resource pool for all PON ports.
+
+	logger.Debug(ctx, "Clear resource ranges")
+
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[ONU_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if status := PONRMgr.ClearResourceIDPool(ctx, Intf, ONU_ID); !status {
+			logger.Error(ctx, "Failed to clear ONU ID resource pool")
+			return errors.New("Failed to clear ONU ID resource pool")
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[ALLOC_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if status := PONRMgr.ClearResourceIDPool(ctx, Intf, ALLOC_ID); !status {
+			logger.Error(ctx, "Failed to clear ALLOC ID resource pool ")
+			return errors.New("Failed to clear ALLOC ID resource pool")
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[GEMPORT_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if status := PONRMgr.ClearResourceIDPool(ctx, Intf, GEMPORT_ID); !status {
+			logger.Error(ctx, "Failed to clear GEMPORT ID resource pool")
+			return errors.New("Failed to clear GEMPORT ID resource pool")
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+
+	for _, Intf := range PONRMgr.IntfIDs {
+		SharedPoolID := PONRMgr.PonResourceRanges[FLOW_ID_SHARED_IDX].(uint32)
+		if SharedPoolID != 0 {
+			Intf = SharedPoolID
+		}
+		if status := PONRMgr.ClearResourceIDPool(ctx, Intf, FLOW_ID); !status {
+			logger.Error(ctx, "Failed to clear FLOW ID resource pool")
+			return errors.New("Failed to clear FLOW ID resource pool")
+		}
+		if SharedPoolID != 0 {
+			break
+		}
+	}
+	return nil
+}
+
+func (PONRMgr *PONResourceManager) InitResourceIDPool(ctx context.Context, Intf uint32, ResourceType string, StartID uint32, EndID uint32) error {
+
+	/*Initialize Resource ID pool for a given Resource Type on a given PON Port
+
+	  :param pon_intf_id: OLT PON interface id
+	  :param resource_type: String to identify type of resource
+	  :param start_idx: start index for onu id pool
+	  :param end_idx: end index for onu id pool
+	  :return boolean: True if resource id pool initialized else false
+	*/
+
+	// delegate to the master instance if sharing enabled across instances
+	SharedResourceMgr := PONRMgr.SharedResourceMgrs[PONRMgr.SharedIdxByType[ResourceType]]
+	if SharedResourceMgr != nil && PONRMgr != SharedResourceMgr {
+		return SharedResourceMgr.InitResourceIDPool(ctx, Intf, ResourceType, StartID, EndID)
+	}
+
+	Path := PONRMgr.GetPath(ctx, Intf, ResourceType)
+	if Path == "" {
+		logger.Errorf(ctx, "Failed to get path for resource type %s", ResourceType)
+		return fmt.Errorf("Failed to get path for resource type %s", ResourceType)
+	}
+
+	//In case of adapter reboot and reconciliation resource in kv store
+	//checked for its presence if not kv store update happens
+	Res, err := PONRMgr.GetResource(ctx, Path)
+	if (err == nil) && (Res != nil) {
+		logger.Debugf(ctx, "Resource %s already present in store ", Path)
+		return nil
+	} else {
+		var excluded []uint32
+		if ResourceType == GEMPORT_ID {
+			//get gem port ids defined in the KV store, if any, and exclude them from the gem port id pool
+			if reservedGemPortIds, defined := PONRMgr.getReservedGemPortIdsFromKVStore(ctx); defined {
+				excluded = reservedGemPortIds
+				logger.Debugw(ctx, "Excluding some ports from GEM port id pool", log.Fields{"excluded gem ports": excluded})
+			}
+		}
+		FormatResult, err := PONRMgr.FormatResource(ctx, Intf, StartID, EndID, excluded)
+		if err != nil {
+			logger.Errorf(ctx, "Failed to format resource")
+			return err
+		}
+		// Add resource as json in kv store.
+		err = PONRMgr.KVStore.Put(ctx, Path, FormatResult)
+		if err == nil {
+			logger.Debug(ctx, "Successfuly posted to kv store")
+			return err
+		}
+	}
+
+	logger.Debug(ctx, "Error initializing pool")
+
+	return err
+}
+
+func (PONRMgr *PONResourceManager) getReservedGemPortIdsFromKVStore(ctx context.Context) ([]uint32, bool) {
+	var reservedGemPortIds []uint32
+	// read reserved gem ports from the config path
+	KvPair, err := PONRMgr.KVStoreForConfig.Get(ctx, RESERVED_GEMPORT_IDS_PATH)
+	if err != nil {
+		logger.Errorw(ctx, "Unable to get reserved GEM port ids from the kv store", log.Fields{"err": err})
+		return reservedGemPortIds, false
+	}
+	if KvPair == nil || KvPair.Value == nil {
+		//no reserved gem port defined in the store
+		return reservedGemPortIds, false
+	}
+	Val, err := kvstore.ToByte(KvPair.Value)
+	if err != nil {
+		logger.Errorw(ctx, "Failed to convert reserved gem port ids into byte array", log.Fields{"err": err})
+		return reservedGemPortIds, false
+	}
+	if err = json.Unmarshal(Val, &reservedGemPortIds); err != nil {
+		logger.Errorw(ctx, "Failed to unmarshal reservedGemPortIds", log.Fields{"err": err})
+		return reservedGemPortIds, false
+	}
+	return reservedGemPortIds, true
+}
+
+func (PONRMgr *PONResourceManager) FormatResource(ctx context.Context, IntfID uint32, StartIDx uint32, EndIDx uint32,
+	Excluded []uint32) ([]byte, error) {
+	/*
+	   Format resource as json.
+	   :param pon_intf_id: OLT PON interface id
+	   :param start_idx: start index for id pool
+	   :param end_idx: end index for id pool
+	   :Id values to be Excluded from the pool
+	   :return dictionary: resource formatted as map
+	*/
+	// Format resource as json to be stored in backend store
+	Resource := make(map[string]interface{})
+	Resource[PON_INTF_ID] = IntfID
+	Resource[START_IDX] = StartIDx
+	Resource[END_IDX] = EndIDx
+	/*
+	   Resource pool stored in backend store as binary string.
+	   Tracking the resource allocation will be done by setting the bits \
+	   in the byte array. The index set will be the resource number allocated.
+	*/
+	var TSData *bitmap.Threadsafe
+	if TSData = bitmap.NewTS(int(EndIDx)); TSData == nil {
+		logger.Error(ctx, "Failed to create a bitmap")
+		return nil, errors.New("Failed to create bitmap")
+	}
+	for _, excludedID := range Excluded {
+		if excludedID < StartIDx || excludedID > EndIDx {
+			logger.Warnf(ctx, "Cannot reserve %d. It must be in the range of [%d, %d]", excludedID,
+				StartIDx, EndIDx)
+			continue
+		}
+		PONRMgr.reserveID(ctx, TSData, StartIDx, excludedID)
+	}
+	Resource[POOL] = TSData.Data(false) //we pass false so as the TSData lib api does not do a copy of the data and return
+
+	Value, err := json.Marshal(Resource)
+	if err != nil {
+		logger.Errorf(ctx, "Failed to marshall resource")
+		return nil, err
+	}
+	return Value, err
+}
+func (PONRMgr *PONResourceManager) GetResource(ctx context.Context, Path string) (map[string]interface{}, error) {
+	/*
+	   Get resource from kv store.
+
+	   :param path: path to get resource
+	   :return: resource if resource present in kv store else None
+	*/
+	//get resource from kv store
+
+	var Value []byte
+	Result := make(map[string]interface{})
+	var Str string
+
+	Resource, err := PONRMgr.KVStore.Get(ctx, Path)
+	if (err != nil) || (Resource == nil) {
+		logger.Debugf(ctx, "Resource  unavailable at %s", Path)
+		return nil, err
+	}
+
+	Value, err = ToByte(Resource.Value)
+	if err != nil {
+		return nil, err
+	}
+
+	// decode resource fetched from backend store to dictionary
+	err = json.Unmarshal(Value, &Result)
+	if err != nil {
+		logger.Error(ctx, "Failed to decode resource")
+		return Result, err
+	}
+	/*
+	   resource pool in backend store stored as binary string whereas to
+	   access the pool to generate/release IDs it need to be converted
+	   as BitArray
+	*/
+	Str, err = ToString(Result[POOL])
+	if err != nil {
+		logger.Error(ctx, "Failed to conver to kv pair to string")
+		return Result, err
+	}
+	Decode64, _ := base64.StdEncoding.DecodeString(Str)
+	Result[POOL], err = ToByte(Decode64)
+	if err != nil {
+		logger.Error(ctx, "Failed to convert resource pool to byte")
+		return Result, err
+	}
+
+	return Result, err
+}
+
+func (PONRMgr *PONResourceManager) GetPath(ctx context.Context, IntfID uint32, ResourceType string) string {
+	/*
+	   Get path for given resource type.
+	   :param pon_intf_id: OLT PON interface id
+	   :param resource_type: String to identify type of resource
+	   :return: path for given resource type
+	*/
+
+	/*
+	   Get the shared pool for the given resource type.
+	   all the resource ranges and the shared resource maps are initialized during the init.
+	*/
+	SharedPoolID := PONRMgr.PonResourceRanges[PONRMgr.SharedIdxByType[ResourceType]].(uint32)
+	if SharedPoolID != 0 {
+		IntfID = SharedPoolID
+	}
+	var Path string
+	if ResourceType == ONU_ID {
+		Path = fmt.Sprintf(ONU_ID_POOL_PATH, PONRMgr.DeviceID, IntfID)
+	} else if ResourceType == ALLOC_ID {
+		Path = fmt.Sprintf(ALLOC_ID_POOL_PATH, PONRMgr.DeviceID, IntfID)
+	} else if ResourceType == GEMPORT_ID {
+		Path = fmt.Sprintf(GEMPORT_ID_POOL_PATH, PONRMgr.DeviceID, IntfID)
+	} else if ResourceType == FLOW_ID {
+		Path = fmt.Sprintf(FLOW_ID_POOL_PATH, PONRMgr.DeviceID, IntfID)
+	} else {
+		logger.Error(ctx, "Invalid resource pool identifier")
+	}
+	return Path
+}
+
+func (PONRMgr *PONResourceManager) GetResourceID(ctx context.Context, IntfID uint32, ResourceType string, NumIDs uint32) ([]uint32, error) {
+	/*
+	   Create alloc/gemport/onu/flow id for given OLT PON interface.
+	   :param pon_intf_id: OLT PON interface id
+	   :param resource_type: String to identify type of resource
+	   :param num_of_id: required number of ids
+	   :return list/uint32/None: list, uint32 or None if resource type is
+	    alloc_id/gemport_id, onu_id or invalid type respectively
+	*/
+	if NumIDs < 1 {
+		logger.Error(ctx, "Invalid number of resources requested")
+		return nil, fmt.Errorf("Invalid number of resources requested %d", NumIDs)
+	}
+	// delegate to the master instance if sharing enabled across instances
+
+	SharedResourceMgr := PONRMgr.SharedResourceMgrs[PONRMgr.SharedIdxByType[ResourceType]]
+	if SharedResourceMgr != nil && PONRMgr != SharedResourceMgr {
+		return SharedResourceMgr.GetResourceID(ctx, IntfID, ResourceType, NumIDs)
+	}
+	logger.Debugf(ctx, "Fetching resource from %s rsrc mgr for resource %s", PONRMgr.Globalorlocal, ResourceType)
+
+	Path := PONRMgr.GetPath(ctx, IntfID, ResourceType)
+	if Path == "" {
+		logger.Errorf(ctx, "Failed to get path for resource type %s", ResourceType)
+		return nil, fmt.Errorf("Failed to get path for resource type %s", ResourceType)
+	}
+	logger.Debugf(ctx, "Get resource for type %s on path %s", ResourceType, Path)
+	var Result []uint32
+	var NextID uint32
+	Resource, err := PONRMgr.GetResource(ctx, Path)
+	if (err == nil) && (ResourceType == ONU_ID) || (ResourceType == FLOW_ID) {
+		if NextID, err = PONRMgr.GenerateNextID(ctx, Resource); err != nil {
+			logger.Error(ctx, "Failed to Generate ID")
+			return Result, err
+		}
+		Result = append(Result, NextID)
+	} else if (err == nil) && ((ResourceType == GEMPORT_ID) || (ResourceType == ALLOC_ID)) {
+		if NumIDs == 1 {
+			if NextID, err = PONRMgr.GenerateNextID(ctx, Resource); err != nil {
+				logger.Error(ctx, "Failed to Generate ID")
+				return Result, err
+			}
+			Result = append(Result, NextID)
+		} else {
+			for NumIDs > 0 {
+				if NextID, err = PONRMgr.GenerateNextID(ctx, Resource); err != nil {
+					logger.Error(ctx, "Failed to Generate ID")
+					return Result, err
+				}
+				Result = append(Result, NextID)
+				NumIDs--
+			}
+		}
+	} else {
+		logger.Error(ctx, "get resource failed")
+		return Result, err
+	}
+
+	//Update resource in kv store
+	if PONRMgr.UpdateResource(ctx, Path, Resource) != nil {
+		logger.Errorf(ctx, "Failed to update resource %s", Path)
+		return nil, fmt.Errorf("Failed to update resource %s", Path)
+	}
+	return Result, nil
+}
+
+func checkValidResourceType(ResourceType string) bool {
+	KnownResourceTypes := []string{ONU_ID, ALLOC_ID, GEMPORT_ID, FLOW_ID}
+
+	for _, v := range KnownResourceTypes {
+		if v == ResourceType {
+			return true
+		}
+	}
+	return false
+}
+
+func (PONRMgr *PONResourceManager) FreeResourceID(ctx context.Context, IntfID uint32, ResourceType string, ReleaseContent []uint32) bool {
+	/*
+	   Release alloc/gemport/onu/flow id for given OLT PON interface.
+	   :param pon_intf_id: OLT PON interface id
+	   :param resource_type: String to identify type of resource
+	   :param release_content: required number of ids
+	   :return boolean: True if all IDs in given release_content release else False
+	*/
+	if !checkValidResourceType(ResourceType) {
+		logger.Error(ctx, "Invalid resource type")
+		return false
+	}
+	if ReleaseContent == nil {
+		logger.Debug(ctx, "Nothing to release")
+		return true
+	}
+	// delegate to the master instance if sharing enabled across instances
+	SharedResourceMgr := PONRMgr.SharedResourceMgrs[PONRMgr.SharedIdxByType[ResourceType]]
+	if SharedResourceMgr != nil && PONRMgr != SharedResourceMgr {
+		return SharedResourceMgr.FreeResourceID(ctx, IntfID, ResourceType, ReleaseContent)
+	}
+	Path := PONRMgr.GetPath(ctx, IntfID, ResourceType)
+	if Path == "" {
+		logger.Error(ctx, "Failed to get path")
+		return false
+	}
+	Resource, err := PONRMgr.GetResource(ctx, Path)
+	if err != nil {
+		logger.Error(ctx, "Failed to get resource")
+		return false
+	}
+	for _, Val := range ReleaseContent {
+		PONRMgr.ReleaseID(ctx, Resource, Val)
+	}
+	if PONRMgr.UpdateResource(ctx, Path, Resource) != nil {
+		logger.Errorf(ctx, "Free resource for %s failed", Path)
+		return false
+	}
+	return true
+}
+
+func (PONRMgr *PONResourceManager) UpdateResource(ctx context.Context, Path string, Resource map[string]interface{}) error {
+	/*
+	   Update resource in resource kv store.
+	   :param path: path to update resource
+	   :param resource: resource need to be updated
+	   :return boolean: True if resource updated in kv store else False
+	*/
+	// TODO resource[POOL] = resource[POOL].bin
+	Value, err := json.Marshal(Resource)
+	if err != nil {
+		logger.Error(ctx, "failed to Marshal")
+		return err
+	}
+	err = PONRMgr.KVStore.Put(ctx, Path, Value)
+	if err != nil {
+		logger.Error(ctx, "failed to put data to kv store %s", Path)
+		return err
+	}
+	return nil
+}
+
+func (PONRMgr *PONResourceManager) ClearResourceIDPool(ctx context.Context, contIntfID uint32, ResourceType string) bool {
+	/*
+	   Clear Resource Pool for a given Resource Type on a given PON Port.
+	   :return boolean: True if removed else False
+	*/
+
+	// delegate to the master instance if sharing enabled across instances
+	SharedResourceMgr := PONRMgr.SharedResourceMgrs[PONRMgr.SharedIdxByType[ResourceType]]
+	if SharedResourceMgr != nil && PONRMgr != SharedResourceMgr {
+		return SharedResourceMgr.ClearResourceIDPool(ctx, contIntfID, ResourceType)
+	}
+	Path := PONRMgr.GetPath(ctx, contIntfID, ResourceType)
+	if Path == "" {
+		logger.Error(ctx, "Failed to get path")
+		return false
+	}
+
+	if err := PONRMgr.KVStore.Delete(ctx, Path); err != nil {
+		logger.Errorf(ctx, "Failed to delete resource %s", Path)
+		return false
+	}
+	logger.Debugf(ctx, "Cleared resource %s", Path)
+	return true
+}
+
+func (PONRMgr PONResourceManager) InitResourceMap(ctx context.Context, PONIntfONUID string) {
+	/*
+	   Initialize resource map
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	*/
+	// initialize pon_intf_onu_id tuple to alloc_ids map
+	AllocIDPath := fmt.Sprintf(ALLOC_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, PONIntfONUID)
+	var AllocIDs []byte
+	Result := PONRMgr.KVStore.Put(ctx, AllocIDPath, AllocIDs)
+	if Result != nil {
+		logger.Error(ctx, "Failed to update the KV store")
+		return
+	}
+	// initialize pon_intf_onu_id tuple to gemport_ids map
+	GEMPortIDPath := fmt.Sprintf(GEMPORT_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, PONIntfONUID)
+	var GEMPortIDs []byte
+	Result = PONRMgr.KVStore.Put(ctx, GEMPortIDPath, GEMPortIDs)
+	if Result != nil {
+		logger.Error(ctx, "Failed to update the KV store")
+		return
+	}
+}
+
+func (PONRMgr PONResourceManager) RemoveResourceMap(ctx context.Context, PONIntfONUID string) bool {
+	/*
+	   Remove resource map
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	*/
+	// remove pon_intf_onu_id tuple to alloc_ids map
+	var err error
+	AllocIDPath := fmt.Sprintf(ALLOC_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, PONIntfONUID)
+	if err = PONRMgr.KVStore.Delete(ctx, AllocIDPath); err != nil {
+		logger.Errorf(ctx, "Failed to remove resource %s", AllocIDPath)
+		return false
+	}
+	// remove pon_intf_onu_id tuple to gemport_ids map
+	GEMPortIDPath := fmt.Sprintf(GEMPORT_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, PONIntfONUID)
+	err = PONRMgr.KVStore.Delete(ctx, GEMPortIDPath)
+	if err != nil {
+		logger.Errorf(ctx, "Failed to remove resource %s", GEMPortIDPath)
+		return false
+	}
+
+	FlowIDPath := fmt.Sprintf(FLOW_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, PONIntfONUID)
+	if FlowIDs, err := PONRMgr.KVStore.List(ctx, FlowIDPath); err != nil {
+		for _, Flow := range FlowIDs {
+			FlowIDInfoPath := fmt.Sprintf(FLOW_ID_INFO_PATH, PONRMgr.DeviceID, PONIntfONUID, Flow.Value)
+			if err = PONRMgr.KVStore.Delete(ctx, FlowIDInfoPath); err != nil {
+				logger.Errorf(ctx, "Failed to remove resource %s", FlowIDInfoPath)
+				return false
+			}
+		}
+	}
+
+	if err = PONRMgr.KVStore.Delete(ctx, FlowIDPath); err != nil {
+		logger.Errorf(ctx, "Failed to remove resource %s", FlowIDPath)
+		return false
+	}
+
+	return true
+}
+
+func (PONRMgr *PONResourceManager) GetCurrentAllocIDForOnu(ctx context.Context, IntfONUID string) []uint32 {
+	/*
+	   Get currently configured alloc ids for given pon_intf_onu_id
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :return list: List of alloc_ids if available, else None
+	*/
+	Path := fmt.Sprintf(ALLOC_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, IntfONUID)
+
+	var Data []uint32
+	Value, err := PONRMgr.KVStore.Get(ctx, Path)
+	if err == nil {
+		if Value != nil {
+			Val, err := ToByte(Value.Value)
+			if err != nil {
+				logger.Errorw(ctx, "Failed to convert into byte array", log.Fields{"error": err})
+				return Data
+			}
+			if err = json.Unmarshal(Val, &Data); err != nil {
+				logger.Error(ctx, "Failed to unmarshal", log.Fields{"error": err})
+				return Data
+			}
+		}
+	}
+	return Data
+}
+
+func (PONRMgr *PONResourceManager) GetCurrentGEMPortIDsForOnu(ctx context.Context, IntfONUID string) []uint32 {
+	/*
+	   Get currently configured gemport ids for given pon_intf_onu_id
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :return list: List of gemport IDs if available, else None
+	*/
+
+	Path := fmt.Sprintf(GEMPORT_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, IntfONUID)
+	logger.Debugf(ctx, "Getting current gemports for %s", Path)
+	var Data []uint32
+	Value, err := PONRMgr.KVStore.Get(ctx, Path)
+	if err == nil {
+		if Value != nil {
+			Val, _ := ToByte(Value.Value)
+			if err = json.Unmarshal(Val, &Data); err != nil {
+				logger.Errorw(ctx, "Failed to unmarshal", log.Fields{"error": err})
+				return Data
+			}
+		}
+	} else {
+		logger.Errorf(ctx, "Failed to get data from kvstore for %s", Path)
+	}
+	return Data
+}
+
+func (PONRMgr *PONResourceManager) GetCurrentFlowIDsForOnu(ctx context.Context, IntfONUID string) []uint32 {
+	/*
+	   Get currently configured flow ids for given pon_intf_onu_id
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :return list: List of Flow IDs if available, else None
+	*/
+
+	Path := fmt.Sprintf(FLOW_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, IntfONUID)
+
+	var Data []uint32
+	Value, err := PONRMgr.KVStore.Get(ctx, Path)
+	if err == nil {
+		if Value != nil {
+			Val, _ := ToByte(Value.Value)
+			if err = json.Unmarshal(Val, &Data); err != nil {
+				logger.Error(ctx, "Failed to unmarshal")
+				return Data
+			}
+		}
+	}
+	return Data
+}
+
+func (PONRMgr *PONResourceManager) GetFlowIDInfo(ctx context.Context, IntfONUID string, FlowID uint32, Data interface{}) error {
+	/*
+	   Get flow details configured for the ONU.
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :param flow_id: Flow Id reference
+	   :param Data: Result
+	   :return error: nil if no error in getting from KV store
+	*/
+
+	Path := fmt.Sprintf(FLOW_ID_INFO_PATH, PONRMgr.DeviceID, IntfONUID, FlowID)
+
+	Value, err := PONRMgr.KVStore.Get(ctx, Path)
+	if err == nil {
+		if Value != nil {
+			Val, err := ToByte(Value.Value)
+			if err != nil {
+				logger.Errorw(ctx, "Failed to convert flowinfo into byte array", log.Fields{"error": err})
+				return err
+			}
+			if err = json.Unmarshal(Val, Data); err != nil {
+				logger.Errorw(ctx, "Failed to unmarshal", log.Fields{"error": err})
+				return err
+			}
+		}
+	}
+	return err
+}
+
+func (PONRMgr *PONResourceManager) RemoveFlowIDInfo(ctx context.Context, IntfONUID string, FlowID uint32) bool {
+	/*
+	   Get flow_id details configured for the ONU.
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :param flow_id: Flow Id reference
+	*/
+	Path := fmt.Sprintf(FLOW_ID_INFO_PATH, PONRMgr.DeviceID, IntfONUID, FlowID)
+
+	if err := PONRMgr.KVStore.Delete(ctx, Path); err != nil {
+		logger.Errorf(ctx, "Falied to remove resource %s", Path)
+		return false
+	}
+	return true
+}
+
+func (PONRMgr *PONResourceManager) UpdateAllocIdsForOnu(ctx context.Context, IntfONUID string, AllocIDs []uint32) error {
+	/*
+	   Update currently configured alloc ids for given pon_intf_onu_id
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :param alloc_ids: list of alloc ids
+	*/
+	var Value []byte
+	var err error
+	Path := fmt.Sprintf(ALLOC_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, IntfONUID)
+	Value, err = json.Marshal(AllocIDs)
+	if err != nil {
+		logger.Error(ctx, "failed to Marshal")
+		return err
+	}
+
+	if err = PONRMgr.KVStore.Put(ctx, Path, Value); err != nil {
+		logger.Errorf(ctx, "Failed to update resource %s", Path)
+		return err
+	}
+	return err
+}
+
+func (PONRMgr *PONResourceManager) UpdateGEMPortIDsForOnu(ctx context.Context, IntfONUID string, GEMPortIDs []uint32) error {
+	/*
+	   Update currently configured gemport ids for given pon_intf_onu_id
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :param gemport_ids: list of gem port ids
+	*/
+
+	var Value []byte
+	var err error
+	Path := fmt.Sprintf(GEMPORT_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, IntfONUID)
+	logger.Debugf(ctx, "Updating gemport ids for %s", Path)
+	Value, err = json.Marshal(GEMPortIDs)
+	if err != nil {
+		logger.Error(ctx, "failed to Marshal")
+		return err
+	}
+
+	if err = PONRMgr.KVStore.Put(ctx, Path, Value); err != nil {
+		logger.Errorf(ctx, "Failed to update resource %s", Path)
+		return err
+	}
+	return err
+}
+
+func checkForFlowIDInList(FlowIDList []uint32, FlowID uint32) (bool, uint32) {
+	/*
+	   Check for a flow id in a given list of flow IDs.
+	   :param FLowIDList: List of Flow IDs
+	   :param FlowID: Flowd to check in the list
+	   : return true and the index if present false otherwise.
+	*/
+
+	for idx := range FlowIDList {
+		if FlowID == FlowIDList[idx] {
+			return true, uint32(idx)
+		}
+	}
+	return false, 0
+}
+
+func (PONRMgr *PONResourceManager) UpdateFlowIDForOnu(ctx context.Context, IntfONUID string, FlowID uint32, Add bool) error {
+	/*
+	   Update the flow_id list of the ONU (add or remove flow_id from the list)
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :param flow_id: flow ID
+	   :param add: Boolean flag to indicate whether the flow_id should be
+	               added or removed from the list. Defaults to adding the flow.
+	*/
+	var Value []byte
+	var err error
+	var RetVal bool
+	var IDx uint32
+	Path := fmt.Sprintf(FLOW_ID_RESOURCE_MAP_PATH, PONRMgr.DeviceID, IntfONUID)
+	FlowIDs := PONRMgr.GetCurrentFlowIDsForOnu(ctx, IntfONUID)
+
+	if Add {
+		if RetVal, _ = checkForFlowIDInList(FlowIDs, FlowID); RetVal {
+			return nil
+		}
+		FlowIDs = append(FlowIDs, FlowID)
+	} else {
+		if RetVal, IDx = checkForFlowIDInList(FlowIDs, FlowID); !RetVal {
+			return nil
+		}
+		// delete the index and shift
+		FlowIDs = append(FlowIDs[:IDx], FlowIDs[IDx+1:]...)
+	}
+	Value, err = json.Marshal(FlowIDs)
+	if err != nil {
+		logger.Error(ctx, "Failed to Marshal")
+		return err
+	}
+
+	if err = PONRMgr.KVStore.Put(ctx, Path, Value); err != nil {
+		logger.Errorf(ctx, "Failed to update resource %s", Path)
+		return err
+	}
+	return err
+}
+
+func (PONRMgr *PONResourceManager) UpdateFlowIDInfoForOnu(ctx context.Context, IntfONUID string, FlowID uint32, FlowData interface{}) error {
+	/*
+	   Update any metadata associated with the flow_id. The flow_data could be json
+	   or any of other data structure. The resource manager doesnt care
+	   :param pon_intf_onu_id: reference of PON interface id and onu id
+	   :param flow_id: Flow ID
+	   :param flow_data: Flow data blob
+	*/
+	var Value []byte
+	var err error
+	Path := fmt.Sprintf(FLOW_ID_INFO_PATH, PONRMgr.DeviceID, IntfONUID, FlowID)
+	Value, err = json.Marshal(FlowData)
+	if err != nil {
+		logger.Error(ctx, "failed to Marshal")
+		return err
+	}
+
+	if err = PONRMgr.KVStore.Put(ctx, Path, Value); err != nil {
+		logger.Errorf(ctx, "Failed to update resource %s", Path)
+		return err
+	}
+	return err
+}
+
+func (PONRMgr *PONResourceManager) GenerateNextID(ctx context.Context, Resource map[string]interface{}) (uint32, error) {
+	/*
+	   Generate unique id having OFFSET as start
+	   :param resource: resource used to generate ID
+	   :return uint32: generated id
+	*/
+	ByteArray, err := ToByte(Resource[POOL])
+	if err != nil {
+		logger.Error(ctx, "Failed to convert resource to byte array")
+		return 0, err
+	}
+	Data := bitmap.TSFromData(ByteArray, false)
+	if Data == nil {
+		logger.Error(ctx, "Failed to get data from byte array")
+		return 0, errors.New("Failed to get data from byte array")
+	}
+
+	Len := Data.Len()
+	var Idx int
+	for Idx = 0; Idx < Len; Idx++ {
+		if !Data.Get(Idx) {
+			break
+		}
+	}
+	Data.Set(Idx, true)
+	res := uint32(Resource[START_IDX].(float64))
+	Resource[POOL] = Data.Data(false)
+	logger.Debugf(ctx, "Generated ID for %d", (uint32(Idx) + res))
+	return (uint32(Idx) + res), err
+}
+
+func (PONRMgr *PONResourceManager) ReleaseID(ctx context.Context, Resource map[string]interface{}, Id uint32) bool {
+	/*
+	   Release unique id having OFFSET as start index.
+	   :param resource: resource used to release ID
+	   :param unique_id: id need to be released
+	*/
+	ByteArray, err := ToByte(Resource[POOL])
+	if err != nil {
+		logger.Error(ctx, "Failed to convert resource to byte array")
+		return false
+	}
+	Data := bitmap.TSFromData(ByteArray, false)
+	if Data == nil {
+		logger.Error(ctx, "Failed to get resource pool")
+		return false
+	}
+	Idx := Id - uint32(Resource[START_IDX].(float64))
+	Data.Set(int(Idx), false)
+	Resource[POOL] = Data.Data(false)
+
+	return true
+}
+
+/* Reserves a unique id in the specified resource pool.
+:param Resource: resource used to reserve ID
+:param Id: ID to be reserved
+*/
+func (PONRMgr *PONResourceManager) reserveID(ctx context.Context, TSData *bitmap.Threadsafe, StartIndex uint32, Id uint32) bool {
+	Data := bitmap.TSFromData(TSData.Data(false), false)
+	if Data == nil {
+		logger.Error(ctx, "Failed to get resource pool")
+		return false
+	}
+	Idx := Id - StartIndex
+	Data.Set(int(Idx), true)
+	return true
+}
+
+func (PONRMgr *PONResourceManager) GetTechnology() string {
+	return PONRMgr.Technology
+}
+
+func (PONRMgr *PONResourceManager) GetResourceTypeAllocID() string {
+	return ALLOC_ID
+}
+
+func (PONRMgr *PONResourceManager) GetResourceTypeGemPortID() string {
+	return GEMPORT_ID
+}
+
+// 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)
+	}
+}
+
+// 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)
+	}
+}
+
+func (PONRMgr *PONResourceManager) AddOnuGemInfo(ctx context.Context, intfID uint32, onuGemData interface{}) error {
+	/*
+	   Update onugem info map,
+	   :param pon_intf_id: reference of PON interface id
+	   :param onuegmdata: onugem info map
+	*/
+	var Value []byte
+	var err error
+	Path := fmt.Sprintf(ONU_GEM_INFO_PATH, PONRMgr.DeviceID, intfID)
+	Value, err = json.Marshal(onuGemData)
+	if err != nil {
+		logger.Error(ctx, "failed to Marshal")
+		return err
+	}
+
+	if err = PONRMgr.KVStore.Put(ctx, Path, Value); err != nil {
+		logger.Errorf(ctx, "Failed to update resource %s", Path)
+		return err
+	}
+	return err
+}
+
+func (PONRMgr *PONResourceManager) GetOnuGemInfo(ctx context.Context, IntfId uint32, onuGemInfo interface{}) error {
+	/*
+	  Get onugeminfo map from kvstore
+	  :param intfid: refremce pon intfid
+	  :param onuGemInfo: onugem info to return from kv strore.
+	*/
+	var Val []byte
+
+	path := fmt.Sprintf(ONU_GEM_INFO_PATH, PONRMgr.DeviceID, IntfId)
+	value, err := PONRMgr.KVStore.Get(ctx, path)
+	if err != nil {
+		logger.Errorw(ctx, "Failed to get from kv store", log.Fields{"path": path})
+		return err
+	} else if value == nil {
+		logger.Debug(ctx, "No onuinfo for path", log.Fields{"path": path})
+		return nil // returning nil as this could happen if there are no onus for the interface yet
+	}
+	if Val, err = kvstore.ToByte(value.Value); err != nil {
+		logger.Error(ctx, "Failed to convert to byte array")
+		return err
+	}
+
+	if err = json.Unmarshal(Val, &onuGemInfo); err != nil {
+		logger.Error(ctx, "Failed to unmarshall")
+		return err
+	}
+	logger.Debugw(ctx, "found onuinfo from path", log.Fields{"path": path, "onuinfo": onuGemInfo})
+	return err
+}
+
+func (PONRMgr *PONResourceManager) DelOnuGemInfoForIntf(ctx context.Context, intfId uint32) error {
+	/*
+	   delete onugem info for an interface from kvstore
+	   :param intfid: refremce pon intfid
+	*/
+
+	path := fmt.Sprintf(ONU_GEM_INFO_PATH, PONRMgr.DeviceID, intfId)
+	if err := PONRMgr.KVStore.Delete(ctx, path); err != nil {
+		logger.Errorf(ctx, "Falied to remove resource %s", path)
+		return err
+	}
+	return nil
+}