<commit_before>// Copyright © 2016 The Things Network
// Use of this source code is governed by the MIT license that can be found in the LICENSE file.

package core

import (
	"github.com/brocaar/lorawan"
)

// Component materializes a core component of the network: Router, Broker or Handler.
//
// With two adapters, it can communicates with others components and thus create a distributed
// network of components.
type Component interface {
	Register(reg Registration, an AckNacker) error
	HandleUp(p []byte, an AckNacker, upAdapter Adapter) error
	HandleDown(p []byte, an AckNacker) error
}

type Handler interface {
	Register(reg Registration, an AckNacker, s Subscriber) error
	HandleUp(p []byte, an AckNacker, upAdapter Adapter) error
	HandleDown(p []byte, an AckNacker, down Adapter) error
}

type Router interface {
	Register(reg Registration, an AckNacker) error
	HandleUp(p []byte, an AckNacker, up Adapter) error
}

type Broker interface {
	Register(reg Registration, an AckNacker) error
	HandleUp(p []byte, an AckNacker, up Adapter) error
}

// NetworkController is directly used by the broker to manage nodes lifecycle.
type NetworkController interface {
	HandleCommands(packet BPacket) error
	UpdateFCntUp(appEUI lorawan.EUI64, devEUI lorawan.EUI64, fcnt uint32)
	UpdateFCntDown(appEUI lorawan.EUI64, devEUI lorawan.EUI64, fcnt uint32)
	MergeCommands(appEUI lorawan.EUI64, devEUI lorawan.EUI64, pkt BPacket) RPacket
}

// AckNacker represents an interface that allow adapters to decouple their protocol from the
// behaviour expected by the caller.
type AckNacker interface {
	Ack(p Packet) error
	Nack() error
}

// Adapter handles communications between components. They implement a specific communication
// protocol which is completely hidden from the outside.
type Adapter interface {
	Send(p Packet, r ...Recipient) ([]byte, error)
	//Join(r JoinRequest, r ...Recipient) (JoinResponse, error)
	GetRecipient(raw []byte) (Recipient, error)
	Next() ([]byte, AckNacker, error)
	NextRegistration() (Registration, AckNacker, error)
}

type Subscriber interface {
	Subscribe(reg Registration, recipient Recipient) error
}<commit_msg>[handler-broker] Fix typo in core interfaces<commit_after>// Copyright © 2016 The Things Network
// Use of this source code is governed by the MIT license that can be found in the LICENSE file.

package core

import (
	"github.com/brocaar/lorawan"
)

// Component materializes a core component of the network: Router, Broker or Handler.
//
// With two adapters, it can communicates with others components and thus create a distributed
// network of components.
type Component interface {
	Register(reg Registration, an AckNacker) error
	HandleUp(p []byte, an AckNacker, upAdapter Adapter) error
	HandleDown(p []byte, an AckNacker) error
}

type Handler interface {
	Register(reg Registration, an AckNacker, s Subscriber) error
	HandleUp(p []byte, an AckNacker, upAdapter Adapter) error
	HandleDown(p []byte, an AckNacker, down Adapter) error
}

type Router interface {
	Register(reg Registration, an AckNacker) error
	HandleUp(p []byte, an AckNacker, up Adapter) error
}

type Broker interface {
	Register(reg Registration, an AckNacker) error
	HandleUp(p []byte, an AckNacker, up Adapter) error
}

// NetworkController is directly used by the broker to manage nodes lifecycle.
type NetworkController interface {
	HandleCommands(packet BPacket) error
	UpdateFCntUp(appEUI lorawan.EUI64, devEUI lorawan.EUI64, fcnt uint32)
	UpdateFCntDown(appEUI lorawan.EUI64, devEUI lorawan.EUI64, fcnt uint32)
	MergeCommands(appEUI lorawan.EUI64, devEUI lorawan.EUI64, pkt BPacket) RPacket
}

// AckNacker represents an interface that allow adapters to decouple their protocol from the
// behaviour expected by the caller.
type AckNacker interface {
	Ack(p Packet) error
	Nack() error
}

// Adapter handles communications between components. They implement a specific communication
// protocol which is completely hidden from the outside.
type Adapter interface {
	Send(p Packet, r ...Recipient) ([]byte, error)
	//Join(r JoinRequest, r ...Recipient) (JoinResponse, error)
	GetRecipient(raw []byte) (Recipient, error)
	Next() ([]byte, AckNacker, error)
	NextRegistration() (Registration, AckNacker, error)
}

type Subscriber interface {
	Subscribe(reg Registration) error
}
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