interfaces.go

package nfqdatapath

import (
	"net"

	"github.com/ghedo/go.pkt/packet"
)

// ContextProcessor is an interface to provide context checks
type ContextProcessor interface {
	DoesContextExist(contextID string) bool
	IsContextServer(contextID string, backendip string) bool
}

// RuleProcessor is an interface to access rules
type RuleProcessor interface {
	CheckRejectRecvRules(contextID string) (int, bool)
	CheckAcceptRecvRules(contextID string) (int, bool)
	CheckRejectTxRules(contextID string) (int, bool)
	CheckAcceptTxRules(contextID string) (int, bool)
}

// Accessor is an interface for datapth to access contexts/rules/tokens
type Accessor interface {
	ContextProcessor
	RuleProcessor
}

// PingConn is an interface to send ping packets/data to network.
// Also implements io.Writer interface.
type PingConn interface {
	ConstructWirePacket(srcIP, dstIP net.IP, transport packet.Packet, payload packet.Packet) ([]byte, error)
	Write(data []byte) (int, error)
	Close() error
}