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main.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package server
import (
"bytes"
"context"
"fmt"
"io/ioutil"
"net"
"net/http"
_ "net/http/pprof" // This is essentially the main package for the orderer
"os"
"os/signal"
"syscall"
"time"
"github.com/hyperledger/fabric/common/channelconfig"
"github.com/hyperledger/fabric/common/crypto"
"github.com/hyperledger/fabric/common/flogging"
"github.com/hyperledger/fabric/common/grpclogging"
"github.com/hyperledger/fabric/common/grpcmetrics"
"github.com/hyperledger/fabric/common/ledger/blockledger"
"github.com/hyperledger/fabric/common/localmsp"
"github.com/hyperledger/fabric/common/metrics"
"github.com/hyperledger/fabric/common/metrics/disabled"
"github.com/hyperledger/fabric/common/tools/configtxgen/encoder"
genesisconfig "github.com/hyperledger/fabric/common/tools/configtxgen/localconfig"
"github.com/hyperledger/fabric/common/util"
"github.com/hyperledger/fabric/core/comm"
"github.com/hyperledger/fabric/core/operations"
"github.com/hyperledger/fabric/msp"
mspmgmt "github.com/hyperledger/fabric/msp/mgmt"
"github.com/hyperledger/fabric/orderer/common/bootstrap/file"
"github.com/hyperledger/fabric/orderer/common/cluster"
"github.com/hyperledger/fabric/orderer/common/localconfig"
"github.com/hyperledger/fabric/orderer/common/metadata"
"github.com/hyperledger/fabric/orderer/common/multichannel"
"github.com/hyperledger/fabric/orderer/consensus"
"github.com/hyperledger/fabric/orderer/consensus/etcdraft"
"github.com/hyperledger/fabric/orderer/consensus/kafka"
"github.com/hyperledger/fabric/orderer/consensus/solo"
cb "github.com/hyperledger/fabric/protos/common"
ab "github.com/hyperledger/fabric/protos/orderer"
"github.com/hyperledger/fabric/protos/utils"
"go.uber.org/zap/zapcore"
"google.golang.org/grpc"
"gopkg.in/alecthomas/kingpin.v2"
)
var logger = flogging.MustGetLogger("orderer.common.server")
//command line flags
var (
app = kingpin.New("orderer", "Hyperledger Fabric orderer node")
start = app.Command("start", "Start the orderer node").Default()
version = app.Command("version", "Show version information")
benchmark = app.Command("benchmark", "Run orderer in benchmark mode")
clusterTypes = map[string]struct{}{"etcdraft": {}}
)
// Main is the entry point of orderer process
func Main() {
fullCmd := kingpin.MustParse(app.Parse(os.Args[1:]))
// "version" command
if fullCmd == version.FullCommand() {
fmt.Println(metadata.GetVersionInfo())
return
}
conf, err := localconfig.Load()
if err != nil {
logger.Error("failed to parse config: ", err)
os.Exit(1)
}
initializeLogging()
initializeLocalMsp(conf)
prettyPrintStruct(conf)
Start(fullCmd, conf)
}
// Start provides a layer of abstraction for benchmark test
func Start(cmd string, conf *localconfig.TopLevel) {
bootstrapBlock := extractBootstrapBlock(conf)
clusterType := isClusterType(bootstrapBlock)
signer := localmsp.NewSigner()
lf, _ := createLedgerFactory(conf)
clusterDialer := &cluster.PredicateDialer{}
clusterConfig := initializeClusterConfig(conf)
clusterDialer.SetConfig(clusterConfig)
// Only clusters that are equipped with a recent config block can replicate.
if clusterType && conf.General.GenesisMethod == "file" {
r := &replicationInitiator{
logger: logger,
secOpts: clusterConfig.SecOpts,
bootstrapBlock: bootstrapBlock,
conf: conf,
lf: &ledgerFactory{lf},
signer: signer,
}
r.replicateIfNeeded()
}
opsSystem := newOperationsSystem(conf.Operations, conf.Metrics)
err := opsSystem.Start()
if err != nil {
logger.Panicf("failed to initialize operations subsystem: %s", err)
}
defer opsSystem.Stop()
metricsProvider := opsSystem.Provider
serverConfig := initializeServerConfig(conf, metricsProvider)
grpcServer := initializeGrpcServer(conf, serverConfig)
caSupport := &comm.CASupport{
AppRootCAsByChain: make(map[string][][]byte),
OrdererRootCAsByChain: make(map[string][][]byte),
ClientRootCAs: serverConfig.SecOpts.ClientRootCAs,
}
tlsCallback := func(bundle *channelconfig.Bundle) {
// only need to do this if mutual TLS is required or if the orderer node is part of a cluster
if grpcServer.MutualTLSRequired() || clusterType {
logger.Debug("Executing callback to update root CAs")
updateTrustedRoots(grpcServer, caSupport, bundle)
if clusterType {
updateClusterDialer(caSupport, clusterDialer, clusterConfig.SecOpts.ServerRootCAs)
}
}
}
manager := initializeMultichannelRegistrar(bootstrapBlock, clusterDialer, serverConfig, grpcServer, conf, signer, metricsProvider, lf, tlsCallback)
mutualTLS := serverConfig.SecOpts.UseTLS && serverConfig.SecOpts.RequireClientCert
server := NewServer(manager, metricsProvider, &conf.Debug, conf.General.Authentication.TimeWindow, mutualTLS)
logger.Infof("Starting %s", metadata.GetVersionInfo())
go handleSignals(addPlatformSignals(map[os.Signal]func(){
syscall.SIGTERM: func() { grpcServer.Stop() },
}))
initializeProfilingService(conf)
ab.RegisterAtomicBroadcastServer(grpcServer.Server(), server)
logger.Info("Beginning to serve requests")
grpcServer.Start()
}
func initializeLogging() {
loggingSpec := os.Getenv("FABRIC_LOGGING_SPEC")
loggingFormat := os.Getenv("FABRIC_LOGGING_FORMAT")
flogging.Init(flogging.Config{
Format: loggingFormat,
Writer: os.Stderr,
LogSpec: loggingSpec,
})
}
// Start the profiling service if enabled.
func initializeProfilingService(conf *localconfig.TopLevel) {
if conf.General.Profile.Enabled {
go func() {
logger.Info("Starting Go pprof profiling service on:", conf.General.Profile.Address)
// The ListenAndServe() call does not return unless an error occurs.
logger.Panic("Go pprof service failed:", http.ListenAndServe(conf.General.Profile.Address, nil))
}()
}
}
func handleSignals(handlers map[os.Signal]func()) {
var signals []os.Signal
for sig := range handlers {
signals = append(signals, sig)
}
signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, signals...)
for sig := range signalChan {
logger.Infof("Received signal: %d (%s)", sig, sig)
handlers[sig]()
}
}
func initializeClusterConfig(conf *localconfig.TopLevel) comm.ClientConfig {
cc := comm.ClientConfig{
AsyncConnect: true,
KaOpts: comm.DefaultKeepaliveOptions,
Timeout: conf.General.Cluster.DialTimeout,
SecOpts: &comm.SecureOptions{},
}
if (!conf.General.TLS.Enabled) || conf.General.Cluster.ClientCertificate == "" {
return cc
}
certFile := conf.General.Cluster.ClientCertificate
certBytes, err := ioutil.ReadFile(certFile)
if err != nil {
logger.Fatalf("Failed to load client TLS certificate file '%s' (%s)", certFile, err)
}
keyFile := conf.General.Cluster.ClientPrivateKey
keyBytes, err := ioutil.ReadFile(keyFile)
if err != nil {
logger.Fatalf("Failed to load client TLS key file '%s' (%s)", keyFile, err)
}
var serverRootCAs [][]byte
for _, serverRoot := range conf.General.Cluster.RootCAs {
rootCACert, err := ioutil.ReadFile(serverRoot)
if err != nil {
logger.Fatalf("Failed to load ServerRootCAs file '%s' (%s)",
err, serverRoot)
}
serverRootCAs = append(serverRootCAs, rootCACert)
}
cc.SecOpts = &comm.SecureOptions{
RequireClientCert: true,
CipherSuites: comm.DefaultTLSCipherSuites,
ServerRootCAs: serverRootCAs,
Certificate: certBytes,
Key: keyBytes,
UseTLS: true,
}
return cc
}
func initializeServerConfig(conf *localconfig.TopLevel, metricsProvider metrics.Provider) comm.ServerConfig {
// secure server config
secureOpts := &comm.SecureOptions{
UseTLS: conf.General.TLS.Enabled,
RequireClientCert: conf.General.TLS.ClientAuthRequired,
}
// check to see if TLS is enabled
if secureOpts.UseTLS {
msg := "TLS"
// load crypto material from files
serverCertificate, err := ioutil.ReadFile(conf.General.TLS.Certificate)
if err != nil {
logger.Fatalf("Failed to load server Certificate file '%s' (%s)",
conf.General.TLS.Certificate, err)
}
serverKey, err := ioutil.ReadFile(conf.General.TLS.PrivateKey)
if err != nil {
logger.Fatalf("Failed to load PrivateKey file '%s' (%s)",
conf.General.TLS.PrivateKey, err)
}
var serverRootCAs, clientRootCAs [][]byte
for _, serverRoot := range conf.General.TLS.RootCAs {
root, err := ioutil.ReadFile(serverRoot)
if err != nil {
logger.Fatalf("Failed to load ServerRootCAs file '%s' (%s)",
err, serverRoot)
}
serverRootCAs = append(serverRootCAs, root)
}
if secureOpts.RequireClientCert {
for _, clientRoot := range conf.General.TLS.ClientRootCAs {
root, err := ioutil.ReadFile(clientRoot)
if err != nil {
logger.Fatalf("Failed to load ClientRootCAs file '%s' (%s)",
err, clientRoot)
}
clientRootCAs = append(clientRootCAs, root)
}
msg = "mutual TLS"
}
secureOpts.Key = serverKey
secureOpts.Certificate = serverCertificate
secureOpts.ClientRootCAs = clientRootCAs
logger.Infof("Starting orderer with %s enabled", msg)
}
kaOpts := comm.DefaultKeepaliveOptions
// keepalive settings
// ServerMinInterval must be greater than 0
if conf.General.Keepalive.ServerMinInterval > time.Duration(0) {
kaOpts.ServerMinInterval = conf.General.Keepalive.ServerMinInterval
}
kaOpts.ServerInterval = conf.General.Keepalive.ServerInterval
kaOpts.ServerTimeout = conf.General.Keepalive.ServerTimeout
commLogger := flogging.MustGetLogger("core.comm").With("server", "Orderer")
if metricsProvider == nil {
metricsProvider = &disabled.Provider{}
}
return comm.ServerConfig{
SecOpts: secureOpts,
KaOpts: kaOpts,
Logger: commLogger,
MetricsProvider: metricsProvider,
StreamInterceptors: []grpc.StreamServerInterceptor{
grpcmetrics.StreamServerInterceptor(grpcmetrics.NewStreamMetrics(metricsProvider)),
grpclogging.StreamServerInterceptor(flogging.MustGetLogger("comm.grpc.server").Zap()),
},
UnaryInterceptors: []grpc.UnaryServerInterceptor{
grpcmetrics.UnaryServerInterceptor(grpcmetrics.NewUnaryMetrics(metricsProvider)),
grpclogging.UnaryServerInterceptor(
flogging.MustGetLogger("comm.grpc.server").Zap(),
grpclogging.WithLeveler(grpclogging.LevelerFunc(grpcLeveler)),
),
},
}
}
func grpcLeveler(ctx context.Context, fullMethod string) zapcore.Level {
switch fullMethod {
case "/orderer.Cluster/Step":
return flogging.DisabledLevel
default:
return zapcore.InfoLevel
}
}
func extractBootstrapBlock(conf *localconfig.TopLevel) *cb.Block {
var bootstrapBlock *cb.Block
// Select the bootstrapping mechanism
switch conf.General.GenesisMethod {
case "provisional":
bootstrapBlock = encoder.New(genesisconfig.Load(conf.General.GenesisProfile)).GenesisBlockForChannel(conf.General.SystemChannel)
case "file":
bootstrapBlock = file.New(conf.General.GenesisFile).GenesisBlock()
default:
logger.Panic("Unknown genesis method:", conf.General.GenesisMethod)
}
return bootstrapBlock
}
func initializeBootstrapChannel(genesisBlock *cb.Block, lf blockledger.Factory) {
chainID, err := utils.GetChainIDFromBlock(genesisBlock)
if err != nil {
logger.Fatal("Failed to parse chain ID from genesis block:", err)
}
gl, err := lf.GetOrCreate(chainID)
if err != nil {
logger.Fatal("Failed to create the system chain:", err)
}
if err := gl.Append(genesisBlock); err != nil {
logger.Fatal("Could not write genesis block to ledger:", err)
}
}
func isClusterType(_ *cb.Block) bool {
return false
}
func initializeGrpcServer(conf *localconfig.TopLevel, serverConfig comm.ServerConfig) *comm.GRPCServer {
lis, err := net.Listen("tcp", fmt.Sprintf("%s:%d", conf.General.ListenAddress, conf.General.ListenPort))
if err != nil {
logger.Fatal("Failed to listen:", err)
}
// Create GRPC server - return if an error occurs
grpcServer, err := comm.NewGRPCServerFromListener(lis, serverConfig)
if err != nil {
logger.Fatal("Failed to return new GRPC server:", err)
}
return grpcServer
}
func initializeLocalMsp(conf *localconfig.TopLevel) {
// Load local MSP
err := mspmgmt.LoadLocalMsp(conf.General.LocalMSPDir, conf.General.BCCSP, conf.General.LocalMSPID)
if err != nil { // Handle errors reading the config file
logger.Fatal("Failed to initialize local MSP:", err)
}
}
func initializeMultichannelRegistrar(bootstrapBlock *cb.Block,
clusterDialer *cluster.PredicateDialer,
srvConf comm.ServerConfig,
srv *comm.GRPCServer,
conf *localconfig.TopLevel,
signer crypto.LocalSigner,
metricsProvider metrics.Provider,
lf blockledger.Factory,
callbacks ...func(bundle *channelconfig.Bundle)) *multichannel.Registrar {
genesisBlock := extractBootstrapBlock(conf)
// Are we bootstrapping?
if len(lf.ChainIDs()) == 0 {
initializeBootstrapChannel(genesisBlock, lf)
} else {
logger.Info("Not bootstrapping because of existing chains")
}
consenters := make(map[string]consensus.Consenter)
registrar := multichannel.NewRegistrar(lf, signer, metricsProvider, callbacks...)
consenters["solo"] = solo.New()
var kafkaMetrics *kafka.Metrics
consenters["kafka"], kafkaMetrics = kafka.New(conf.Kafka, metricsProvider)
// Note, we pass a 'nil' channel here, we could pass a channel that
// closes if we wished to cleanup this routine on exit.
go kafkaMetrics.PollGoMetricsUntilStop(time.Minute, nil)
if isClusterType(bootstrapBlock) {
raftConsenter := etcdraft.New(clusterDialer, conf, srvConf, srv, registrar)
consenters["etcdraft"] = raftConsenter
}
registrar.Initialize(consenters)
return registrar
}
func newOperationsSystem(ops localconfig.Operations, metrics localconfig.Metrics) *operations.System {
return operations.NewSystem(operations.Options{
Logger: flogging.MustGetLogger("orderer.operations"),
ListenAddress: ops.ListenAddress,
Metrics: operations.MetricsOptions{
Provider: metrics.Provider,
Statsd: &operations.Statsd{
Network: metrics.Statsd.Network,
Address: metrics.Statsd.Address,
WriteInterval: metrics.Statsd.WriteInterval,
Prefix: metrics.Statsd.Prefix,
},
},
TLS: operations.TLS{
Enabled: ops.TLS.Enabled,
CertFile: ops.TLS.Certificate,
KeyFile: ops.TLS.PrivateKey,
ClientCertRequired: ops.TLS.ClientAuthRequired,
ClientCACertFiles: ops.TLS.ClientRootCAs,
},
Version: metadata.Version,
})
}
func updateTrustedRoots(srv *comm.GRPCServer, rootCASupport *comm.CASupport,
cm channelconfig.Resources) {
rootCASupport.Lock()
defer rootCASupport.Unlock()
appRootCAs := [][]byte{}
ordererRootCAs := [][]byte{}
appOrgMSPs := make(map[string]struct{})
ordOrgMSPs := make(map[string]struct{})
if ac, ok := cm.ApplicationConfig(); ok {
//loop through app orgs and build map of MSPIDs
for _, appOrg := range ac.Organizations() {
appOrgMSPs[appOrg.MSPID()] = struct{}{}
}
}
if ac, ok := cm.OrdererConfig(); ok {
//loop through orderer orgs and build map of MSPIDs
for _, ordOrg := range ac.Organizations() {
ordOrgMSPs[ordOrg.MSPID()] = struct{}{}
}
}
if cc, ok := cm.ConsortiumsConfig(); ok {
for _, consortium := range cc.Consortiums() {
//loop through consortium orgs and build map of MSPIDs
for _, consortiumOrg := range consortium.Organizations() {
appOrgMSPs[consortiumOrg.MSPID()] = struct{}{}
}
}
}
cid := cm.ConfigtxValidator().ChainID()
logger.Debugf("updating root CAs for channel [%s]", cid)
msps, err := cm.MSPManager().GetMSPs()
if err != nil {
logger.Errorf("Error getting root CAs for channel %s (%s)", cid, err)
return
}
for k, v := range msps {
// check to see if this is a FABRIC MSP
if v.GetType() == msp.FABRIC {
for _, root := range v.GetTLSRootCerts() {
// check to see of this is an app org MSP
if _, ok := appOrgMSPs[k]; ok {
logger.Debugf("adding app root CAs for MSP [%s]", k)
appRootCAs = append(appRootCAs, root)
}
// check to see of this is an orderer org MSP
if _, ok := ordOrgMSPs[k]; ok {
logger.Debugf("adding orderer root CAs for MSP [%s]", k)
ordererRootCAs = append(ordererRootCAs, root)
}
}
for _, intermediate := range v.GetTLSIntermediateCerts() {
// check to see of this is an app org MSP
if _, ok := appOrgMSPs[k]; ok {
logger.Debugf("adding app root CAs for MSP [%s]", k)
appRootCAs = append(appRootCAs, intermediate)
}
// check to see of this is an orderer org MSP
if _, ok := ordOrgMSPs[k]; ok {
logger.Debugf("adding orderer root CAs for MSP [%s]", k)
ordererRootCAs = append(ordererRootCAs, intermediate)
}
}
}
}
rootCASupport.AppRootCAsByChain[cid] = appRootCAs
rootCASupport.OrdererRootCAsByChain[cid] = ordererRootCAs
// now iterate over all roots for all app and orderer chains
trustedRoots := [][]byte{}
for _, roots := range rootCASupport.AppRootCAsByChain {
trustedRoots = append(trustedRoots, roots...)
}
for _, roots := range rootCASupport.OrdererRootCAsByChain {
trustedRoots = append(trustedRoots, roots...)
}
// also need to append statically configured root certs
if len(rootCASupport.ClientRootCAs) > 0 {
trustedRoots = append(trustedRoots, rootCASupport.ClientRootCAs...)
}
// now update the client roots for the gRPC server
err = srv.SetClientRootCAs(trustedRoots)
if err != nil {
msg := "Failed to update trusted roots for orderer from latest config " +
"block. This orderer may not be able to communicate " +
"with members of channel %s (%s)"
logger.Warningf(msg, cm.ConfigtxValidator().ChainID(), err)
}
}
func updateClusterDialer(rootCASupport *comm.CASupport, clusterDialer *cluster.PredicateDialer, localClusterRootCAs [][]byte) {
rootCASupport.Lock()
defer rootCASupport.Unlock()
// Iterate over all orderer root CAs for all chains and add them
// to the root CAs
var clusterRootCAs [][]byte
for _, roots := range rootCASupport.OrdererRootCAsByChain {
clusterRootCAs = append(clusterRootCAs, roots...)
}
// Add the local root CAs too
clusterRootCAs = append(clusterRootCAs, localClusterRootCAs...)
// Update the cluster config with the new root CAs
clusterConfig := clusterDialer.Config.Load().(comm.ClientConfig)
clusterConfig.SecOpts.ServerRootCAs = clusterRootCAs
clusterDialer.SetConfig(clusterConfig)
}
func prettyPrintStruct(i interface{}) {
params := util.Flatten(i)
var buffer bytes.Buffer
for i := range params {
buffer.WriteString("\n\t")
buffer.WriteString(params[i])
}
logger.Infof("Orderer config values:%s\n", buffer.String())
}