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config.go
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config.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package deliverservice
import (
"crypto/x509"
"io/ioutil"
"time"
"github.com/hyperledger/fabric/core/comm"
"github.com/hyperledger/fabric/core/config"
"github.com/hyperledger/fabric/internal/pkg/peer/orderers"
"github.com/pkg/errors"
"github.com/spf13/viper"
)
const (
DefaultReConnectBackoffThreshold = float64(time.Hour)
DefaultReConnectTotalTimeThreshold = time.Second * 60 * 60
DefaultConnectionTimeout = time.Second * 3
)
// DeliverServiceConfig is the struct that defines the deliverservice configuration.
type DeliverServiceConfig struct {
// PeerTLSEnabled enables/disables Peer TLS.
PeerTLSEnabled bool
// ReConnectBackoffThreshold sets the delivery service maximal delay between consencutive retries.
ReConnectBackoffThreshold float64
// ReconnectTotalTimeThreshold sets the total time the delivery service may spend in reconnection attempts
// until its retry logic gives up and returns an error.
ReconnectTotalTimeThreshold time.Duration
// ConnectionTimeout sets the delivery service <-> ordering service node connection timeout
ConnectionTimeout time.Duration
// Keepalive option for deliveryservice
KeepaliveOptions comm.KeepaliveOptions
// SecOpts provides the TLS info for connections
SecOpts comm.SecureOptions
// OrdererEndpointOverrides is a map of orderer addresses which should be
// re-mapped to a different orderer endpoint.
OrdererEndpointOverrides map[string]*orderers.Endpoint
}
type AddressOverride struct {
From string `mapstructure:"from"`
To string `mapstructure:"to"`
CACertsFile string `mapstructure:"caCertsFile"`
}
// GlobalConfig obtains a set of configuration from viper, build and returns the config struct.
func GlobalConfig() *DeliverServiceConfig {
c := &DeliverServiceConfig{}
c.loadDeliverServiceConfig()
return c
}
func LoadOverridesMap() (map[string]*orderers.Endpoint, error) {
var overrides []AddressOverride
err := viper.UnmarshalKey("peer.deliveryclient.addressOverrides", &overrides)
if err != nil {
return nil, errors.WithMessage(err, "could not unmarshal peer.deliveryclient.addressOverrides")
}
if len(overrides) == 0 {
return nil, nil
}
overrideMap := map[string]*orderers.Endpoint{}
for _, override := range overrides {
certPool := x509.NewCertPool()
if override.CACertsFile != "" {
pem, err := ioutil.ReadFile(override.CACertsFile)
if err != nil {
logger.Warningf("could not read file '%s' specified for caCertsFile of orderer endpoint override from '%s' to '%s': %s", override.CACertsFile, override.From, override.To, err)
continue
}
success := certPool.AppendCertsFromPEM(pem)
if !success {
logger.Warningf("Attempted to create a cert pool for override of orderer address '%s' to '%s' but did not find any valid certs in '%s'", override.From, override.To, override.CACertsFile)
continue
}
}
overrideMap[override.From] = &orderers.Endpoint{
Address: override.To,
CertPool: certPool,
}
}
return overrideMap, nil
}
func (c *DeliverServiceConfig) loadDeliverServiceConfig() {
c.PeerTLSEnabled = viper.GetBool("peer.tls.enabled")
c.ReConnectBackoffThreshold = viper.GetFloat64("peer.deliveryclient.reConnectBackoffThreshold")
if c.ReConnectBackoffThreshold == 0 {
c.ReConnectBackoffThreshold = DefaultReConnectBackoffThreshold
}
c.ReconnectTotalTimeThreshold = viper.GetDuration("peer.deliveryclient.reconnectTotalTimeThreshold")
if c.ReconnectTotalTimeThreshold == 0 {
c.ReconnectTotalTimeThreshold = DefaultReConnectTotalTimeThreshold
}
c.ConnectionTimeout = viper.GetDuration("peer.deliveryclient.connTimeout")
if c.ConnectionTimeout == 0 {
c.ConnectionTimeout = DefaultConnectionTimeout
}
c.KeepaliveOptions = comm.DefaultKeepaliveOptions
if viper.IsSet("peer.keepalive.deliveryClient.interval") {
c.KeepaliveOptions.ClientInterval = viper.GetDuration("peer.keepalive.deliveryClient.interval")
}
if viper.IsSet("peer.keepalive.deliveryClient.timeout") {
c.KeepaliveOptions.ClientTimeout = viper.GetDuration("peer.keepalive.deliveryClient.timeout")
}
c.SecOpts = comm.SecureOptions{
UseTLS: viper.GetBool("peer.tls.enabled"),
RequireClientCert: viper.GetBool("peer.tls.clientAuthRequired"),
}
if c.SecOpts.RequireClientCert {
certFile := config.GetPath("peer.tls.clientCert.file")
if certFile == "" {
certFile = config.GetPath("peer.tls.cert.file")
}
keyFile := config.GetPath("peer.tls.clientKey.file")
if keyFile == "" {
keyFile = config.GetPath("peer.tls.key.file")
}
keyPEM, err := ioutil.ReadFile(keyFile)
if err != nil {
panic(errors.WithMessagef(err, "unable to load key at '%s'", keyFile))
}
c.SecOpts.Key = keyPEM
certPEM, err := ioutil.ReadFile(certFile)
if err != nil {
panic(errors.WithMessagef(err, "unable to load cert at '%s'", certFile))
}
c.SecOpts.Certificate = certPEM
}
overridesMap, err := LoadOverridesMap()
if err != nil {
panic(err)
}
c.OrdererEndpointOverrides = overridesMap
}