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comm.go
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comm.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package comm
import (
"fmt"
"github.com/hyperledger/fabric/gossip/api"
"github.com/hyperledger/fabric/gossip/common"
proto "github.com/hyperledger/fabric/protos/gossip"
)
// Comm is an object that enables to communicate with other peers
// that also embed a CommModule.
type Comm interface {
// GetPKIid returns this instance's PKI id
GetPKIid() common.PKIidType
// Send sends a message to remote peers
Send(msg *proto.SignedGossipMessage, peers ...*RemotePeer)
// Probe probes a remote node and returns nil if its responsive,
// and an error if it's not.
Probe(peer *RemotePeer) error
// Handshake authenticates a remote peer and returns
// (its identity, nil) on success and (nil, error)
Handshake(peer *RemotePeer) (api.PeerIdentityType, error)
// Accept returns a dedicated read-only channel for messages sent by other nodes that match a certain predicate.
// Each message from the channel can be used to send a reply back to the sender
Accept(common.MessageAcceptor) <-chan proto.ReceivedMessage
// PresumedDead returns a read-only channel for node endpoints that are suspected to be offline
PresumedDead() <-chan common.PKIidType
// CloseConn closes a connection to a certain endpoint
CloseConn(peer *RemotePeer)
// Stop stops the module
Stop()
}
// RemotePeer defines a peer's endpoint and its PKIid
type RemotePeer struct {
Endpoint string
PKIID common.PKIidType
}
// String converts a RemotePeer to a string
func (p *RemotePeer) String() string {
return fmt.Sprintf("%s, PKIid:%v", p.Endpoint, p.PKIID)
}