forked from hyperledger/fabric-sdk-go
/
connectionopts.go
218 lines (184 loc) · 5.24 KB
/
connectionopts.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package comm
import (
"context"
"crypto/x509"
"time"
"github.com/VRamakrishna/fabric-sdk-go/pkg/common/options"
"github.com/VRamakrishna/fabric-sdk-go/pkg/common/providers/fab"
"github.com/spf13/cast"
"google.golang.org/grpc/keepalive"
)
type params struct {
hostOverride string
certificate *x509.Certificate
keepAliveParams keepalive.ClientParameters
failFast bool
insecure bool
connectTimeout time.Duration
parentContext context.Context
}
func defaultParams() *params {
return ¶ms{
failFast: true,
connectTimeout: 3 * time.Second,
}
}
// WithHostOverride sets the host name that will be used to resolve the TLS certificate
func WithHostOverride(value string) options.Opt {
return func(p options.Params) {
if setter, ok := p.(hostOverrideSetter); ok {
setter.SetHostOverride(value)
}
}
}
// WithCertificate sets the X509 certificate used for the TLS connection
func WithCertificate(value *x509.Certificate) options.Opt {
return func(p options.Params) {
if setter, ok := p.(certificateSetter); ok {
setter.SetCertificate(value)
}
}
}
// WithKeepAliveParams sets the GRPC keep-alive parameters
func WithKeepAliveParams(value keepalive.ClientParameters) options.Opt {
return func(p options.Params) {
if setter, ok := p.(keepAliveParamsSetter); ok {
setter.SetKeepAliveParams(value)
}
}
}
// WithFailFast sets the GRPC fail-fast parameter
func WithFailFast(value bool) options.Opt {
return func(p options.Params) {
if setter, ok := p.(failFastSetter); ok {
setter.SetFailFast(value)
}
}
}
// WithConnectTimeout sets the GRPC connection timeout
func WithConnectTimeout(value time.Duration) options.Opt {
return func(p options.Params) {
if setter, ok := p.(connectTimeoutSetter); ok {
setter.SetConnectTimeout(value)
}
}
}
// WithParentContext sets the parent context
func WithParentContext(value context.Context) options.Opt {
return func(p options.Params) {
if setter, ok := p.(parentContextSetter); ok {
setter.SetParentContext(value)
}
}
}
// WithInsecure indicates to fall back to an insecure connection if the
// connection URL does not specify a protocol
func WithInsecure() options.Opt {
return func(p options.Params) {
if setter, ok := p.(insecureSetter); ok {
setter.SetInsecure(true)
}
}
}
func (p *params) SetHostOverride(value string) {
logger.Debugf("HostOverride: %s", value)
p.hostOverride = value
}
func (p *params) SetCertificate(value *x509.Certificate) {
if value != nil {
logger.Debugf("setting certificate [subject: %s, serial: %s]", value.Subject, value.SerialNumber)
} else {
logger.Debug("setting nil certificate")
}
p.certificate = value
}
func (p *params) SetKeepAliveParams(value keepalive.ClientParameters) {
logger.Debugf("KeepAliveParams: %#v", value)
p.keepAliveParams = value
}
func (p *params) SetFailFast(value bool) {
logger.Debugf("FailFast: %t", value)
p.failFast = value
}
func (p *params) SetConnectTimeout(value time.Duration) {
logger.Debugf("ConnectTimeout: %s", value)
p.connectTimeout = value
}
func (p *params) SetInsecure(value bool) {
logger.Debugf("Insecure: %t", value)
p.insecure = value
}
func (p *params) SetParentContext(value context.Context) {
logger.Debugf("Setting parent context")
p.parentContext = value
}
type hostOverrideSetter interface {
SetHostOverride(value string)
}
type certificateSetter interface {
SetCertificate(value *x509.Certificate)
}
type keepAliveParamsSetter interface {
SetKeepAliveParams(value keepalive.ClientParameters)
}
type failFastSetter interface {
SetFailFast(value bool)
}
type insecureSetter interface {
SetInsecure(value bool)
}
type connectTimeoutSetter interface {
SetConnectTimeout(value time.Duration)
}
type parentContextSetter interface {
SetParentContext(value context.Context)
}
// OptsFromPeerConfig returns a set of connection options from the given peer config
func OptsFromPeerConfig(peerCfg *fab.PeerConfig) []options.Opt {
opts := []options.Opt{
WithHostOverride(getServerNameOverride(peerCfg)),
WithFailFast(getFailFast(peerCfg)),
WithKeepAliveParams(getKeepAliveOptions(peerCfg)),
WithCertificate(peerCfg.TLSCACert),
}
if isInsecureAllowed(peerCfg) {
opts = append(opts, WithInsecure())
}
return opts
}
func getServerNameOverride(peerCfg *fab.PeerConfig) string {
if str, ok := peerCfg.GRPCOptions["ssl-target-name-override"].(string); ok {
return str
}
return ""
}
func getFailFast(peerCfg *fab.PeerConfig) bool {
if ff, ok := peerCfg.GRPCOptions["fail-fast"].(bool); ok {
return cast.ToBool(ff)
}
return false
}
func getKeepAliveOptions(peerCfg *fab.PeerConfig) keepalive.ClientParameters {
var kap keepalive.ClientParameters
if kaTime, ok := peerCfg.GRPCOptions["keep-alive-time"]; ok {
kap.Time = cast.ToDuration(kaTime)
}
if kaTimeout, ok := peerCfg.GRPCOptions["keep-alive-timeout"]; ok {
kap.Timeout = cast.ToDuration(kaTimeout)
}
if kaPermit, ok := peerCfg.GRPCOptions["keep-alive-permit"]; ok {
kap.PermitWithoutStream = cast.ToBool(kaPermit)
}
return kap
}
func isInsecureAllowed(peerCfg *fab.PeerConfig) bool {
allowInsecure, ok := peerCfg.GRPCOptions["allow-insecure"].(bool)
if ok {
return allowInsecure
}
return false
}