VOL-2292: Create application for scale testing of BAL

- Base framework created and is functional
- Able to provision ATT techprofile with scheduler, queue and eapol
  flow creation.
- Extensible framework provided to add various operator workflows
- README has details about how to build, run, configure and extend
  the framework.

Change-Id: I71774959281881278c14b48bee7f9adc0b81ec68
diff --git a/core/resource_manager.go b/core/resource_manager.go
new file mode 100644
index 0000000..1bb5aaf
--- /dev/null
+++ b/core/resource_manager.go
@@ -0,0 +1,451 @@
+/*
+ * 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 resourcemanager provides the utility for managing resources
+package core
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/opencord/voltha-lib-go/v2/pkg/log"
+	ponrmgr "github.com/opencord/voltha-lib-go/v2/pkg/ponresourcemanager"
+	"github.com/opencord/voltha-protos/v2/go/openolt"
+)
+
+func init() {
+	_, _ = log.AddPackage(log.JSON, log.DebugLevel, nil)
+}
+
+// OpenOltResourceMgr holds resource related information as provided below for each field
+type OpenOltResourceMgr struct {
+	deviceInfo *openolt.DeviceInfo
+	// array of pon resource managers per interface technology
+	ResourceMgrs map[uint32]*ponrmgr.PONResourceManager
+}
+
+// NewResourceMgr init a New resource manager instance which in turn instantiates pon resource manager
+// instances according to technology. Initializes the default resource ranges for all
+// the resources.
+func NewResourceMgr(deviceID string, KVStoreHostPort string, kvStoreType string, deviceType string, devInfo *openolt.DeviceInfo) *OpenOltResourceMgr {
+	var ResourceMgr OpenOltResourceMgr
+	log.Debugf("Init new resource manager")
+
+	ResourceMgr.deviceInfo = devInfo
+
+	Ranges := make(map[string]*openolt.DeviceInfo_DeviceResourceRanges)
+	RsrcMgrsByTech := make(map[string]*ponrmgr.PONResourceManager)
+	ResourceMgr.ResourceMgrs = make(map[uint32]*ponrmgr.PONResourceManager)
+
+	// TODO self.args = registry('main').get_args()
+
+	/*
+	   If a legacy driver returns protobuf without any ranges,s synthesize one from
+	   the legacy global per-device information. This, in theory, is temporary until
+	   the legacy drivers are upgrade to support pool ranges.
+	*/
+	if devInfo.Ranges == nil {
+		var ranges openolt.DeviceInfo_DeviceResourceRanges
+		ranges.Technology = devInfo.GetTechnology()
+
+		NumPONPorts := devInfo.GetPonPorts()
+		var index uint32
+		for index = 0; index < NumPONPorts; index++ {
+			ranges.IntfIds = append(ranges.IntfIds, index)
+		}
+
+		var Pool openolt.DeviceInfo_DeviceResourceRanges_Pool
+		Pool.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_ONU_ID
+		Pool.Start = devInfo.OnuIdStart
+		Pool.End = devInfo.OnuIdEnd
+		Pool.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_DEDICATED_PER_INTF
+		onuPool := Pool
+		ranges.Pools = append(ranges.Pools, &onuPool)
+
+		Pool.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_ALLOC_ID
+		Pool.Start = devInfo.AllocIdStart
+		Pool.End = devInfo.AllocIdEnd
+		Pool.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH
+		allocPool := Pool
+		ranges.Pools = append(ranges.Pools, &allocPool)
+
+		Pool.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_GEMPORT_ID
+		Pool.Start = devInfo.GemportIdStart
+		Pool.End = devInfo.GemportIdEnd
+		Pool.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH
+		gemPool := Pool
+		ranges.Pools = append(ranges.Pools, &gemPool)
+
+		Pool.Type = openolt.DeviceInfo_DeviceResourceRanges_Pool_FLOW_ID
+		Pool.Start = devInfo.FlowIdStart
+		Pool.End = devInfo.FlowIdEnd
+		Pool.Sharing = openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH
+		ranges.Pools = append(ranges.Pools, &Pool)
+		// Add to device info
+		devInfo.Ranges = append(devInfo.Ranges, &ranges)
+	}
+
+	// Create a separate Resource Manager instance for each range. This assumes that
+	// each technology is represented by only a single range
+	var GlobalPONRsrcMgr *ponrmgr.PONResourceManager
+	var err error
+	IPPort := strings.Split(KVStoreHostPort, ":")
+	for _, TechRange := range devInfo.Ranges {
+		technology := TechRange.Technology
+		log.Debugf("Device info technology %s", technology)
+		Ranges[technology] = TechRange
+		port, _ := strconv.Atoi(IPPort[1])
+		RsrcMgrsByTech[technology], err = ponrmgr.NewPONResourceManager(technology, deviceType, deviceID,
+			kvStoreType, IPPort[0], port)
+		if err != nil {
+			log.Errorf("Failed to create pon resource manager instance for technology %s", technology)
+			return nil
+		}
+		// resource_mgrs_by_tech[technology] = resource_mgr
+		if GlobalPONRsrcMgr == nil {
+			GlobalPONRsrcMgr = RsrcMgrsByTech[technology]
+		}
+		for _, IntfID := range TechRange.IntfIds {
+			ResourceMgr.ResourceMgrs[(IntfID)] = RsrcMgrsByTech[technology]
+		}
+		// self.initialize_device_resource_range_and_pool(resource_mgr, global_resource_mgr, arange)
+		InitializeDeviceResourceRangeAndPool(RsrcMgrsByTech[technology], GlobalPONRsrcMgr,
+			TechRange, devInfo)
+	}
+	// After we have initialized resource ranges, initialize the
+	// resource pools accordingly.
+	for _, PONRMgr := range RsrcMgrsByTech {
+		_ = PONRMgr.InitDeviceResourcePool()
+	}
+	log.Info("Initialization of  resource manager success!")
+	return &ResourceMgr
+}
+
+// InitializeDeviceResourceRangeAndPool initializes the resource range pool according to the sharing type, then apply
+// device specific information. If KV doesn't exist
+// or is broader than the device, the device's information will
+// dictate the range limits
+func InitializeDeviceResourceRangeAndPool(ponRMgr *ponrmgr.PONResourceManager, globalPONRMgr *ponrmgr.PONResourceManager,
+	techRange *openolt.DeviceInfo_DeviceResourceRanges, devInfo *openolt.DeviceInfo) {
+
+	// init the resource range pool according to the sharing type
+
+	log.Debugf("Resource range pool init for technology %s", ponRMgr.Technology)
+	// first load from KV profiles
+	status := ponRMgr.InitResourceRangesFromKVStore()
+	if !status {
+		log.Debugf("Failed to load resource ranges from KV store for tech %s", ponRMgr.Technology)
+	}
+
+	/*
+	   Then apply device specific information. If KV doesn't exist
+	   or is broader than the device, the device's information will
+	   dictate the range limits
+	*/
+	log.Debugf("Using device info to init pon resource ranges for tech", ponRMgr.Technology)
+
+	ONUIDStart := devInfo.OnuIdStart
+	ONUIDEnd := devInfo.OnuIdEnd
+	ONUIDShared := openolt.DeviceInfo_DeviceResourceRanges_Pool_DEDICATED_PER_INTF
+	ONUIDSharedPoolID := uint32(0)
+	AllocIDStart := devInfo.AllocIdStart
+	AllocIDEnd := devInfo.AllocIdEnd
+	AllocIDShared := openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH // TODO EdgeCore/BAL limitation
+	AllocIDSharedPoolID := uint32(0)
+	GEMPortIDStart := devInfo.GemportIdStart
+	GEMPortIDEnd := devInfo.GemportIdEnd
+	GEMPortIDShared := openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH // TODO EdgeCore/BAL limitation
+	GEMPortIDSharedPoolID := uint32(0)
+	FlowIDStart := devInfo.FlowIdStart
+	FlowIDEnd := devInfo.FlowIdEnd
+	FlowIDShared := openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH // TODO EdgeCore/BAL limitation
+	FlowIDSharedPoolID := uint32(0)
+
+	var FirstIntfPoolID uint32
+	var SharedPoolID uint32
+
+	/*
+	 * As a zero check is made against SharedPoolID to check whether the resources are shared across all intfs
+	 * if resources are shared across interfaces then SharedPoolID is given a positive number.
+	 */
+	for _, FirstIntfPoolID = range techRange.IntfIds {
+		// skip the intf id 0
+		if FirstIntfPoolID == 0 {
+			continue
+		}
+		break
+	}
+
+	for _, RangePool := range techRange.Pools {
+		if RangePool.Sharing == openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH {
+			SharedPoolID = FirstIntfPoolID
+		} else if RangePool.Sharing == openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_SAME_TECH {
+			SharedPoolID = FirstIntfPoolID
+		} else {
+			SharedPoolID = 0
+		}
+		if RangePool.Type == openolt.DeviceInfo_DeviceResourceRanges_Pool_ONU_ID {
+			ONUIDStart = RangePool.Start
+			ONUIDEnd = RangePool.End
+			ONUIDShared = RangePool.Sharing
+			ONUIDSharedPoolID = SharedPoolID
+		} else if RangePool.Type == openolt.DeviceInfo_DeviceResourceRanges_Pool_ALLOC_ID {
+			AllocIDStart = RangePool.Start
+			AllocIDEnd = RangePool.End
+			AllocIDShared = RangePool.Sharing
+			AllocIDSharedPoolID = SharedPoolID
+		} else if RangePool.Type == openolt.DeviceInfo_DeviceResourceRanges_Pool_GEMPORT_ID {
+			GEMPortIDStart = RangePool.Start
+			GEMPortIDEnd = RangePool.End
+			GEMPortIDShared = RangePool.Sharing
+			GEMPortIDSharedPoolID = SharedPoolID
+		} else if RangePool.Type == openolt.DeviceInfo_DeviceResourceRanges_Pool_FLOW_ID {
+			FlowIDStart = RangePool.Start
+			FlowIDEnd = RangePool.End
+			FlowIDShared = RangePool.Sharing
+			FlowIDSharedPoolID = SharedPoolID
+		}
+	}
+
+	log.Debugw("Device info init", log.Fields{"technology": techRange.Technology,
+		"onu_id_start": ONUIDStart, "onu_id_end": ONUIDEnd, "onu_id_shared_pool_id": ONUIDSharedPoolID,
+		"alloc_id_start": AllocIDStart, "alloc_id_end": AllocIDEnd,
+		"alloc_id_shared_pool_id": AllocIDSharedPoolID,
+		"gemport_id_start":        GEMPortIDStart, "gemport_id_end": GEMPortIDEnd,
+		"gemport_id_shared_pool_id": GEMPortIDSharedPoolID,
+		"flow_id_start":             FlowIDStart,
+		"flow_id_end_idx":           FlowIDEnd,
+		"flow_id_shared_pool_id":    FlowIDSharedPoolID,
+		"intf_ids":                  techRange.IntfIds,
+		"uni_id_start":              0,
+		"uni_id_end_idx":            1, /*MaxUNIIDperONU()*/
+	})
+
+	ponRMgr.InitDefaultPONResourceRanges(ONUIDStart, ONUIDEnd, ONUIDSharedPoolID,
+		AllocIDStart, AllocIDEnd, AllocIDSharedPoolID,
+		GEMPortIDStart, GEMPortIDEnd, GEMPortIDSharedPoolID,
+		FlowIDStart, FlowIDEnd, FlowIDSharedPoolID, 0, 1,
+		devInfo.PonPorts, techRange.IntfIds)
+
+	// For global sharing, make sure to refresh both local and global resource manager instances' range
+
+	if ONUIDShared == openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH {
+		globalPONRMgr.UpdateRanges(ponrmgr.ONU_ID_START_IDX, ONUIDStart, ponrmgr.ONU_ID_END_IDX, ONUIDEnd,
+			"", 0, nil)
+		ponRMgr.UpdateRanges(ponrmgr.ONU_ID_START_IDX, ONUIDStart, ponrmgr.ONU_ID_END_IDX, ONUIDEnd,
+			"", 0, globalPONRMgr)
+	}
+	if AllocIDShared == openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH {
+		globalPONRMgr.UpdateRanges(ponrmgr.ALLOC_ID_START_IDX, AllocIDStart, ponrmgr.ALLOC_ID_END_IDX, AllocIDEnd,
+			"", 0, nil)
+
+		ponRMgr.UpdateRanges(ponrmgr.ALLOC_ID_START_IDX, AllocIDStart, ponrmgr.ALLOC_ID_END_IDX, AllocIDEnd,
+			"", 0, globalPONRMgr)
+	}
+	if GEMPortIDShared == openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH {
+		globalPONRMgr.UpdateRanges(ponrmgr.GEMPORT_ID_START_IDX, GEMPortIDStart, ponrmgr.GEMPORT_ID_END_IDX, GEMPortIDEnd,
+			"", 0, nil)
+		ponRMgr.UpdateRanges(ponrmgr.GEMPORT_ID_START_IDX, GEMPortIDStart, ponrmgr.GEMPORT_ID_END_IDX, GEMPortIDEnd,
+			"", 0, globalPONRMgr)
+	}
+	if FlowIDShared == openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_ALL_TECH {
+		globalPONRMgr.UpdateRanges(ponrmgr.FLOW_ID_START_IDX, FlowIDStart, ponrmgr.FLOW_ID_END_IDX, FlowIDEnd,
+			"", 0, nil)
+		ponRMgr.UpdateRanges(ponrmgr.FLOW_ID_START_IDX, FlowIDStart, ponrmgr.FLOW_ID_END_IDX, FlowIDEnd,
+			"", 0, globalPONRMgr)
+	}
+
+	// Make sure loaded range fits the platform bit encoding ranges
+	ponRMgr.UpdateRanges(ponrmgr.UNI_ID_START_IDX, 0, ponrmgr.UNI_ID_END_IDX /* TODO =OpenOltPlatform.MAX_UNIS_PER_ONU-1*/, 1, "", 0, nil)
+}
+
+// Delete clears used resources for the particular olt device being deleted
+func (RsrcMgr *OpenOltResourceMgr) Delete() error {
+	/* TODO
+	   def __del__(self):
+	           self.log.info("clearing-device-resource-pool")
+	           for key, resource_mgr in self.resource_mgrs.iteritems():
+	               resource_mgr.clear_device_resource_pool()
+
+	       def assert_pon_id_limit(self, pon_intf_id):
+	           assert pon_intf_id in self.resource_mgrs
+
+	       def assert_onu_id_limit(self, pon_intf_id, onu_id):
+	           self.assert_pon_id_limit(pon_intf_id)
+	           self.resource_mgrs[pon_intf_id].assert_resource_limits(onu_id, PONResourceManager.ONU_ID)
+
+	       @property
+	       def max_uni_id_per_onu(self):
+	           return 0 #OpenOltPlatform.MAX_UNIS_PER_ONU-1, zero-based indexing Uncomment or override to make default multi-uni
+
+	       def assert_uni_id_limit(self, pon_intf_id, onu_id, uni_id):
+	           self.assert_onu_id_limit(pon_intf_id, onu_id)
+	           self.resource_mgrs[pon_intf_id].assert_resource_limits(uni_id, PONResourceManager.UNI_ID)
+	*/
+	for _, rsrcMgr := range RsrcMgr.ResourceMgrs {
+		if err := rsrcMgr.ClearDeviceResourcePool(); err != nil {
+			log.Debug("Failed to clear device resource pool")
+			return err
+		}
+	}
+	log.Debug("Cleared device resource pool")
+	return nil
+}
+
+// GetONUID returns the available OnuID for the given pon-port
+func (RsrcMgr *OpenOltResourceMgr) GetONUID(ponIntfID uint32) (uint32, error) {
+	// Check if Pon Interface ID is present in Resource-manager-map
+	if _, ok := RsrcMgr.ResourceMgrs[ponIntfID]; !ok {
+		err := errors.New("invalid-pon-interface-" + strconv.Itoa(int(ponIntfID)))
+		return 0, err
+	}
+	// Get ONU id for a provided pon interface ID.
+	ONUID, err := RsrcMgr.ResourceMgrs[ponIntfID].GetResourceID(ponIntfID,
+		ponrmgr.ONU_ID, 1)
+	if err != nil {
+		log.Errorf("Failed to get resource for interface %d for type %s",
+			ponIntfID, ponrmgr.ONU_ID)
+		return 0, err
+	}
+	if ONUID != nil {
+		RsrcMgr.ResourceMgrs[ponIntfID].InitResourceMap(fmt.Sprintf("%d,%d", ponIntfID, ONUID[0]))
+		return ONUID[0], err
+	}
+
+	return 0, err // return OnuID 0 on error
+}
+
+// GetAllocID return the first Alloc ID for a given pon interface id and onu id and then update the resource map on
+// the KV store with the list of alloc_ids allocated for the pon_intf_onu_id tuple
+// Currently of all the alloc_ids available, it returns the first alloc_id in the list for tha given ONU
+func (RsrcMgr *OpenOltResourceMgr) GetAllocID(intfID uint32, onuID uint32, uniID uint32) uint32 {
+
+	var err error
+	IntfOnuIDUniID := fmt.Sprintf("%d,%d,%d", intfID, onuID, uniID)
+	AllocID := RsrcMgr.ResourceMgrs[intfID].GetCurrentAllocIDForOnu(IntfOnuIDUniID)
+	if AllocID != nil {
+		// Since we support only one alloc_id for the ONU at the moment,
+		// return the first alloc_id in the list, if available, for that
+		// ONU.
+		log.Debugw("Retrieved alloc ID from pon resource mgr", log.Fields{"AllocID": AllocID})
+		return AllocID[0]
+	}
+	AllocID, err = RsrcMgr.ResourceMgrs[intfID].GetResourceID(intfID,
+		ponrmgr.ALLOC_ID, 1)
+
+	if AllocID == nil || err != nil {
+		log.Error("Failed to allocate alloc id")
+		return 0
+	}
+	// update the resource map on KV store with the list of alloc_id
+	// allocated for the pon_intf_onu_id tuple
+	err = RsrcMgr.ResourceMgrs[intfID].UpdateAllocIdsForOnu(IntfOnuIDUniID, AllocID)
+	if err != nil {
+		log.Error("Failed to update Alloc ID")
+		return 0
+	}
+	log.Debugw("Allocated new Tcont from pon resource mgr", log.Fields{"AllocID": AllocID})
+	return AllocID[0]
+}
+
+// GetGEMPortID gets gem port id for a particular pon port, onu id and uni id and then update the resource map on
+// the KV store with the list of gemport_id allocated for the pon_intf_onu_id tuple
+func (RsrcMgr *OpenOltResourceMgr) GetGEMPortID(ponPort uint32, onuID uint32,
+	uniID uint32, NumOfPorts uint32) ([]uint32, error) {
+
+	/* Get gem port id for a particular pon port, onu id
+	   and uni id.
+	*/
+
+	var err error
+	IntfOnuIDUniID := fmt.Sprintf("%d,%d,%d", ponPort, onuID, uniID)
+
+	GEMPortList := RsrcMgr.ResourceMgrs[ponPort].GetCurrentGEMPortIDsForOnu(IntfOnuIDUniID)
+	if GEMPortList != nil {
+		return GEMPortList, nil
+	}
+
+	GEMPortList, err = RsrcMgr.ResourceMgrs[ponPort].GetResourceID(ponPort,
+		ponrmgr.GEMPORT_ID, NumOfPorts)
+	if err != nil && GEMPortList == nil {
+		log.Errorf("Failed to get gem port id for %s", IntfOnuIDUniID)
+		return nil, err
+	}
+
+	// update the resource map on KV store with the list of gemport_id
+	// allocated for the pon_intf_onu_id tuple
+	err = RsrcMgr.ResourceMgrs[ponPort].UpdateGEMPortIDsForOnu(IntfOnuIDUniID,
+		GEMPortList)
+	if err != nil {
+		log.Errorf("Failed to update GEM ports to kv store for %s", IntfOnuIDUniID)
+		return nil, err
+	}
+
+	return GEMPortList, err
+}
+
+// FreeFlowID returns the free flow id for a given interface, onu id and uni id
+func (RsrcMgr *OpenOltResourceMgr) FreeFlowID(IntfID uint32, onuID int32,
+	uniID int32, FlowID uint32) {
+	var IntfONUID string
+	var err error
+	FlowIds := make([]uint32, 0)
+
+	FlowIds = append(FlowIds, FlowID)
+	IntfONUID = fmt.Sprintf("%d,%d,%d", IntfID, onuID, uniID)
+	err = RsrcMgr.ResourceMgrs[IntfID].UpdateFlowIDForOnu(IntfONUID, FlowID, false)
+	if err != nil {
+		log.Errorw("Failed to Update flow id  for", log.Fields{"intf": IntfONUID})
+	}
+	RsrcMgr.ResourceMgrs[IntfID].RemoveFlowIDInfo(IntfONUID, FlowID)
+	RsrcMgr.ResourceMgrs[IntfID].FreeResourceID(IntfID, ponrmgr.FLOW_ID, FlowIds)
+}
+
+// FreeFlowIDs releases the flow Ids
+func (RsrcMgr *OpenOltResourceMgr) FreeFlowIDs(IntfID uint32, onuID uint32,
+	uniID uint32, FlowID []uint32) {
+
+	RsrcMgr.ResourceMgrs[IntfID].FreeResourceID(IntfID, ponrmgr.FLOW_ID, FlowID)
+
+	var IntfOnuIDUniID string
+	var err error
+	for _, flow := range FlowID {
+		IntfOnuIDUniID = fmt.Sprintf("%d,%d,%d", IntfID, onuID, uniID)
+		err = RsrcMgr.ResourceMgrs[IntfID].UpdateFlowIDForOnu(IntfOnuIDUniID, flow, false)
+		if err != nil {
+			log.Errorw("Failed to Update flow id for", log.Fields{"intf": IntfOnuIDUniID})
+		}
+		RsrcMgr.ResourceMgrs[IntfID].RemoveFlowIDInfo(IntfOnuIDUniID, flow)
+	}
+}
+
+// FreeAllocID frees AllocID on the PON resource pool and also frees the allocID association
+// for the given OLT device.
+func (RsrcMgr *OpenOltResourceMgr) FreeAllocID(IntfID uint32, allocID uint32) {
+	allocIDs := make([]uint32, 0)
+	allocIDs = append(allocIDs, allocID)
+	RsrcMgr.ResourceMgrs[IntfID].FreeResourceID(IntfID, ponrmgr.ALLOC_ID, allocIDs)
+}
+
+// FreeGemPortID frees GemPortID on the PON resource pool and also frees the gemPortID association
+// for the given OLT device.
+func (RsrcMgr *OpenOltResourceMgr) FreeGemPortID(IntfID uint32, gemPortID uint32) {
+	gemPortIDs := make([]uint32, 0)
+	gemPortIDs = append(gemPortIDs, gemPortID)
+	RsrcMgr.ResourceMgrs[IntfID].FreeResourceID(IntfID, ponrmgr.GEMPORT_ID, gemPortIDs)
+}