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ra.go
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ra.go
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package FabricEmu
import (
"bytes"
"crypto/sha1"
"crypto/tls"
"crypto/x509"
"fmt"
"net"
"os"
"sync"
"github.com/google/uuid"
"github.com/tg123/phabrik/federation"
"github.com/tg123/phabrik/transport"
)
type ReplicaAgent struct {
server *transport.Server
listenaddr string
serverCertTp string
clientCert *tls.Certificate
hostid string
nodeid string
deploymentDirectory string
replicas sync.Map
onNewReplicaOpened func(replica *Replica)
}
type ReplicaAgentConfig struct {
OnNewReplicaOpened func(replica *Replica)
}
func NewReplicaAgent(config ReplicaAgentConfig) (*ReplicaAgent, error) {
ra := &ReplicaAgent{
onNewReplicaOpened: config.OnNewReplicaOpened,
}
if err := ra.createServer(); err != nil {
return nil, err
}
ra.hostid = uuid.New().String()
ra.nodeid = federation.NodeIDFromMD5(ra.hostid).String()
dir, err := os.MkdirTemp("", "sfemudeploy")
if err != nil {
return nil, err
}
ra.deploymentDirectory = dir
return ra, nil
}
func (h *ReplicaAgent) createServer() error {
serverCert, err := generateCert()
if err != nil {
return err
}
clientCert, err := generateCert()
if err != nil {
return err
}
tlsconf := &tls.Config{
Certificates: []tls.Certificate{*serverCert},
ClientAuth: tls.RequestClientCert,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
if !bytes.Equal(rawCerts[0], clientCert.Certificate[0]) {
return fmt.Errorf("bad client cert")
}
return nil
},
}
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return err
}
s, err := transport.Listen(l, transport.ServerConfig{
Config: transport.Config{
TLS: tlsconf,
},
MessageCallback: h.handler,
})
if err != nil {
return err
}
h.server = s
h.listenaddr = l.Addr().String()
h.serverCertTp = fmt.Sprintf("%x", sha1.Sum(serverCert.Certificate[0]))
h.clientCert = clientCert
return nil
}
func (h *ReplicaAgent) Wait() error {
return h.server.Serve()
}