context

type LB_AMF struct {
	AmfID int64 // INTERNAL ID for this AMF

	AmfTypeIdent int // Identifies the type of AMF

	LB_Conn *LB_Conn // Stores all the connection related information

	RelativeCapacity     int64 // AMFs Relative Cap. -> extracted out of NGSetup
	NumberOfConnectedUEs int64 // Amount of UEs that are connected to this AMF

	Ues sync.Map // "List" of all UE that are processed by this AMF

	/* logger */
	Log *logrus.Entry
}

type LB_Conn struct {
	ID     int64 // internal AMF/GNB ID that is connected with Conn
	TypeID int   // type identifier of the connected AMF/GNB

	Conn   *sctp.SCTPConn // actual connection to AMF/GNB
	Closed bool           // determines whether the connection is closed

	GnbPointer *LB_GNB
	AmfPointer *LB_AMF
	/* logger */
	Log *logrus.Entry
}

type LB_Context struct {
	Name string
	NfId string

	LbIP string // IPv4 adress of the LB

	LbToAmfPort int            // inital prot to connect to the first AMF
	LbToAmfAddr *sctp.SCTPAddr // SCTP adress generated for AMFs

	LbListenPort int            // port to listen for GNBs
	LbListenAddr *sctp.SCTPAddr // SCTP adress generated for GNBs

	Running bool // true while the LB is not beeing terminated

	NewAmf               bool     // indicates that a new AMF IP+Port have been added so that the LB can connect to it
	NewRegistAmfIpList   []string // Registration AMFs that have to be registred
	NewRegularAmfIpList  []string // Regular AMFs that have to be registred
	NewDeregistAmfIpList []string // Deregistration AMFs that have to be registred

	DifferentAmfTypes        int  // amount of different AMF types used
	ContinuesAmfRegistration bool // true for continues accepting AMFs for registration

	LB_GNBPool      sync.Map // GNBs connected to the LB
	RegistAMFPool   sync.Map // AMFs connected to LB
	RegularAMFPool  sync.Map // AMFs connected to LB
	DeregistAMFPool sync.Map // AMFs connected to LB

	Next_Regist_Amf   *LB_AMF // AMF that is used for the next UE entering registration
	Next_Regular_Amf  *LB_AMF // if 3 AMF types: AMF that is used for the next UE finishing registration
	Next_Deregist_Amf *LB_AMF // if > 2 AMF types: AMF that is used for the next UE starting deregistration

	IDGen *UniqueNumberGen

	RelativeCapacity int64 // To build setup response

	/* temp */
	PlmnSupportList []factory.PlmnSupportItem
	ServedGuamiList []models.Guami

	/* logger */
	Log *logrus.Entry

	/* metrics */
	MetricsLevel int
	MetricsGNBs  sync.Map
}

type LB_GNB struct {
	GnbID int64 // INTERNAL ID for this GNB

	LB_Conn *LB_Conn // stores all the connection related information
	Ues     sync.Map // "list" of all UE that are processed by this GNB

	/* logger */
	Log *logrus.Entry
}

type LB_UE struct {
	UeStateIdent int // Identifies the state of the UE

	GNB_UE_ID int64 // ID given to the UE by GNB/RAN
	LB_UE_ID  int64 // ID given to the UE by LB
	AMF_UE_ID int64 // ID given to the UE by AMF

	GnbID      int64   // LB-internal ID of GNB that issued the UE
	GnbPointer *LB_GNB // ponter to the connected GNB

	AmfID      int64   // LB-internal ID of AMF that processes the UE
	AmfPointer *LB_AMF // ponter to the connected AMF

	UplinkFlag   bool // set true when Uplink-NAS-RegistrationComplete is done
	ResponseFlag bool // set true when InitialContextSetupResponse is done
	DeregFlag    bool // set true when Uplink-NAS-Deregistration-Accept is done

	/* nas decrypt */    // TODO
	RRCECause            string
	ULCount              security.Count //TODO amf_ue L728 | gmm HandleRegist HandleServiceRequest (only get())
	DLCount              security.Count // TODO set in CopyDataFromUeContextModel | .AddOne() in nas Encode()
	Kamf                 string
	Kgnb                 []uint8 // 32 byte
	Kn3iwf               []uint8 // 32 byte
	CipheringAlg         uint8
	IntegrityAlg         uint8
	KnasInt              [16]uint8 // 16 byte
	KnasEnc              [16]uint8 // 16 byte
	Supi                 string
	ABBA                 []uint8
	Kseaf                string
	UESecurityCapability nasType.UESecurityCapability // for security command
	// TODO set in NGAP HandlePathSwitchRequest
	MacFailed bool // set to true if the integrity check of current NAS message is failed

	/* logger */
	Log *logrus.Entry
}

type MetricsGNB struct {
	ID         int64
	MetricsUEs *sync.Map
}

type UniqueNumberGen struct {
	ListEmpty bool
	Recycled  *list.List
	RegularID int64
}