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chconfig.go
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chconfig.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package chconfig
import (
reqContext "context"
"math/rand"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric-sdk-go/pkg/common/logging"
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/fab"
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/msp"
"github.com/hyperledger/fabric-sdk-go/pkg/fab/channel"
"github.com/hyperledger/fabric-sdk-go/pkg/fab/resource"
"github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/common"
mb "github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/msp"
ab "github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/orderer"
pb "github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/peer"
"github.com/pkg/errors"
channelConfig "github.com/hyperledger/fabric-sdk-go/internal/github.com/hyperledger/fabric/common/channelconfig"
imsp "github.com/hyperledger/fabric-sdk-go/internal/github.com/hyperledger/fabric/msp"
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/context"
contextImpl "github.com/hyperledger/fabric-sdk-go/pkg/context"
)
var logger = logging.NewLogger("fabsdk/fab")
const (
defaultMinResponses = 1
defaultMaxTargets = 1
)
// Opts contains options for retrieving channel configuration
type Opts struct {
Orderer fab.Orderer // if configured, channel config will be retrieved from this orderer
Targets []fab.Peer // if configured, channel config will be retrieved from peers (targets)
MinResponses int // used with targets option; min number of success responses (from targets/peers)
MaxTargets int //if configured, channel config will be retrieved for these number of random targets
}
// Option func for each Opts argument
type Option func(opts *Opts) error
// Context holds the providers and identity
type Context struct {
context.Providers
msp.Identity
}
// ChannelConfig implements query channel configuration
type ChannelConfig struct {
channelID string
opts Opts
}
// ChannelCfg contains channel configuration
type ChannelCfg struct {
id string
msps []*mb.MSPConfig
anchorPeers []*fab.OrgAnchorPeer
orderers []string
versions *fab.Versions
}
// NewChannelCfg creates channel cfg
// TODO: This is temporary, Remove once we have config injected in sdk
func NewChannelCfg(channelID string) *ChannelCfg {
return &ChannelCfg{id: channelID}
}
// ID returns the channel ID
func (cfg *ChannelCfg) ID() string {
return cfg.id
}
// MSPs returns msps
func (cfg *ChannelCfg) MSPs() []*mb.MSPConfig {
return cfg.msps
}
// AnchorPeers returns anchor peers
func (cfg *ChannelCfg) AnchorPeers() []*fab.OrgAnchorPeer {
return cfg.anchorPeers
}
// Orderers returns orderers
func (cfg *ChannelCfg) Orderers() []string {
return cfg.orderers
}
// Versions returns versions
func (cfg *ChannelCfg) Versions() *fab.Versions {
return cfg.versions
}
// New channel config implementation
func New(channelID string, options ...Option) (*ChannelConfig, error) {
opts, err := prepareOpts(options...)
if err != nil {
return nil, err
}
return &ChannelConfig{channelID: channelID, opts: opts}, nil
}
// Query returns channel configuration
func (c *ChannelConfig) Query(reqCtx reqContext.Context) (fab.ChannelCfg, error) {
if c.opts.Orderer != nil {
return c.queryOrderer(reqCtx)
}
return c.queryPeers(reqCtx)
}
func (c *ChannelConfig) queryPeers(reqCtx reqContext.Context) (*ChannelCfg, error) {
ctx, ok := contextImpl.RequestClientContext(reqCtx)
if !ok {
return nil, errors.New("failed get client context from reqContext for signPayload")
}
l, err := channel.NewLedger(c.channelID)
if err != nil {
return nil, errors.WithMessage(err, "ledger client creation failed")
}
targets := []fab.ProposalProcessor{}
if c.opts.Targets == nil {
// Calculate targets from config
chPeers, err := ctx.Config().ChannelPeers(c.channelID)
if err != nil {
return nil, errors.WithMessage(err, "read configuration for channel peers failed")
}
for _, p := range chPeers {
newPeer, err := ctx.InfraProvider().CreatePeerFromConfig((&p.NetworkPeer))
if err != nil || newPeer == nil {
return nil, errors.WithMessage(err, "NewPeer failed")
}
targets = append(targets, newPeer)
}
targets = randomMaxTargets(targets, c.opts.MaxTargets)
} else {
targets = peersToTxnProcessors(c.opts.Targets)
}
configEnvelope, err := l.QueryConfigBlock(reqCtx, targets, &channel.TransactionProposalResponseVerifier{MinResponses: c.opts.MinResponses})
if err != nil {
return nil, errors.WithMessage(err, "QueryBlockConfig failed")
}
return extractConfig(c.channelID, configEnvelope)
}
func (c *ChannelConfig) queryOrderer(reqCtx reqContext.Context) (*ChannelCfg, error) {
configEnvelope, err := resource.LastConfigFromOrderer(reqCtx, c.channelID, c.opts.Orderer)
if err != nil {
return nil, errors.WithMessage(err, "LastConfigFromOrderer failed")
}
return extractConfig(c.channelID, configEnvelope)
}
// WithPeers encapsulates peers to Option
func WithPeers(peers []fab.Peer) Option {
return func(opts *Opts) error {
opts.Targets = peers
return nil
}
}
// WithMinResponses encapsulates minimum responses to Option
func WithMinResponses(min int) Option {
return func(opts *Opts) error {
opts.MinResponses = min
return nil
}
}
// WithOrderer encapsulates orderer to Option
func WithOrderer(orderer fab.Orderer) Option {
return func(opts *Opts) error {
opts.Orderer = orderer
return nil
}
}
// WithMaxTargets encapsulates minTargets to Option
func WithMaxTargets(maxTargets int) Option {
return func(opts *Opts) error {
opts.MaxTargets = maxTargets
return nil
}
}
// prepareQueryConfigOpts Reads channel config options from Option array
func prepareOpts(options ...Option) (Opts, error) {
opts := Opts{}
for _, option := range options {
err := option(&opts)
if err != nil {
return opts, errors.WithMessage(err, "Failed to read query config opts")
}
}
//resolve defaults
if opts.MinResponses == 0 {
opts.MinResponses = defaultMinResponses
}
if opts.MaxTargets == 0 {
opts.MaxTargets = defaultMaxTargets
}
return opts, nil
}
func extractConfig(channelID string, configEnvelope *common.ConfigEnvelope) (*ChannelCfg, error) {
group := configEnvelope.Config.ChannelGroup
versions := &fab.Versions{
Channel: &common.ConfigGroup{},
}
config := &ChannelCfg{
id: channelID,
msps: []*mb.MSPConfig{},
anchorPeers: []*fab.OrgAnchorPeer{},
orderers: []string{},
versions: versions,
}
err := loadConfig(config, config.versions.Channel, group, "base", "", true)
if err != nil {
return nil, errors.WithMessage(err, "load config items from config group failed")
}
logger.Debugf("channel config: %v", config)
return config, err
}
func loadConfig(configItems *ChannelCfg, versionsGroup *common.ConfigGroup, group *common.ConfigGroup, name string, org string, top bool) error {
logger.Debugf("loadConfigGroup - %s - START groups Org: %s", name, org)
if group == nil {
return nil
}
logger.Debugf("loadConfigGroup - %s - version %v", name, group.Version)
logger.Debugf("loadConfigGroup - %s - mod policy %s", name, group.ModPolicy)
logger.Debugf("loadConfigGroup - %s - >> groups", name)
groups := group.GetGroups()
if groups != nil {
versionsGroup.Groups = make(map[string]*common.ConfigGroup)
for key, configGroup := range groups {
logger.Debugf("loadConfigGroup - %s - found config group ==> %s", name, key)
// The Application group is where config settings are that we want to find
versionsGroup.Groups[key] = &common.ConfigGroup{}
loadConfig(configItems, versionsGroup.Groups[key], configGroup, name+"."+key, key, false)
}
} else {
logger.Debugf("loadConfigGroup - %s - no groups", name)
}
logger.Debugf("loadConfigGroup - %s - << groups", name)
logger.Debugf("loadConfigGroup - %s - >> values", name)
values := group.GetValues()
if values != nil {
versionsGroup.Values = make(map[string]*common.ConfigValue)
for key, configValue := range values {
versionsGroup.Values[key] = &common.ConfigValue{}
loadConfigValue(configItems, key, versionsGroup.Values[key], configValue, name, org)
}
} else {
logger.Debugf("loadConfigGroup - %s - no values", name)
}
logger.Debugf("loadConfigGroup - %s - << values", name)
logger.Debugf("loadConfigGroup - %s - >> policies", name)
policies := group.GetPolicies()
if policies != nil {
versionsGroup.Policies = make(map[string]*common.ConfigPolicy)
for key, configPolicy := range policies {
versionsGroup.Policies[key] = &common.ConfigPolicy{}
loadConfigPolicy(configItems, key, versionsGroup.Policies[key], configPolicy, name, org)
}
} else {
logger.Debugf("loadConfigGroup - %s - no policies", name)
}
logger.Debugf("loadConfigGroup - %s - << policies", name)
logger.Debugf("loadConfigGroup - %s - < group", name)
return nil
}
func loadConfigPolicy(configItems *ChannelCfg, key string, versionsPolicy *common.ConfigPolicy, configPolicy *common.ConfigPolicy, groupName string, org string) error {
logger.Debugf("loadConfigPolicy - %s - name: %s", groupName, key)
logger.Debugf("loadConfigPolicy - %s - version: %d", groupName, configPolicy.Version)
logger.Debugf("loadConfigPolicy - %s - mod_policy: %s", groupName, configPolicy.ModPolicy)
versionsPolicy.Version = configPolicy.Version
return loadPolicy(configItems, versionsPolicy, key, configPolicy.Policy, groupName, org)
}
func loadPolicy(configItems *ChannelCfg, versionsPolicy *common.ConfigPolicy, key string, policy *common.Policy, groupName string, org string) error {
policyType := common.Policy_PolicyType(policy.Type)
switch policyType {
case common.Policy_SIGNATURE:
sigPolicyEnv := &common.SignaturePolicyEnvelope{}
err := proto.Unmarshal(policy.Value, sigPolicyEnv)
if err != nil {
return errors.Wrap(err, "unmarshal signature policy envelope from config failed")
}
logger.Debugf("loadConfigPolicy - %s - policy SIGNATURE :: %v", groupName, sigPolicyEnv.Rule)
// TODO: Do something with this value
break
case common.Policy_MSP:
// TODO: Not implemented yet
logger.Debugf("loadConfigPolicy - %s - policy :: MSP POLICY NOT PARSED ", groupName)
break
case common.Policy_IMPLICIT_META:
implicitMetaPolicy := &common.ImplicitMetaPolicy{}
err := proto.Unmarshal(policy.Value, implicitMetaPolicy)
if err != nil {
return errors.Wrap(err, "unmarshal implicit meta policy from config failed")
}
logger.Debugf("loadConfigPolicy - %s - policy IMPLICIT_META :: %v", groupName, implicitMetaPolicy)
// TODO: Do something with this value
break
default:
return errors.Errorf("unknown policy type %v", policyType)
}
return nil
}
func loadConfigValue(configItems *ChannelCfg, key string, versionsValue *common.ConfigValue, configValue *common.ConfigValue, groupName string, org string) error {
logger.Debugf("loadConfigValue - %s - START value name: %s", groupName, key)
logger.Debugf("loadConfigValue - %s - version: %d", groupName, configValue.Version)
logger.Debugf("loadConfigValue - %s - modPolicy: %s", groupName, configValue.ModPolicy)
versionsValue.Version = configValue.Version
switch key {
case channelConfig.AnchorPeersKey:
anchorPeers := &pb.AnchorPeers{}
err := proto.Unmarshal(configValue.Value, anchorPeers)
if err != nil {
return errors.Wrap(err, "unmarshal anchor peers from config failed")
}
logger.Debugf("loadConfigValue - %s - AnchorPeers :: %s", groupName, anchorPeers)
if len(anchorPeers.AnchorPeers) > 0 {
for _, anchorPeer := range anchorPeers.AnchorPeers {
oap := &fab.OrgAnchorPeer{Org: org, Host: anchorPeer.Host, Port: anchorPeer.Port}
configItems.anchorPeers = append(configItems.anchorPeers, oap)
logger.Debugf("loadConfigValue - %s - AnchorPeer :: %s:%d:%s", groupName, oap.Host, oap.Port, oap.Org)
}
}
break
case channelConfig.MSPKey:
mspConfig := &mb.MSPConfig{}
err := proto.Unmarshal(configValue.Value, mspConfig)
if err != nil {
return errors.Wrap(err, "unmarshal MSPConfig from config failed")
}
logger.Debugf("loadConfigValue - %s - MSP found", groupName)
mspType := imsp.ProviderType(mspConfig.Type)
if mspType != imsp.FABRIC {
return errors.Errorf("unsupported MSP type (%v)", mspType)
}
configItems.msps = append(configItems.msps, mspConfig)
break
case channelConfig.ConsensusTypeKey:
consensusType := &ab.ConsensusType{}
err := proto.Unmarshal(configValue.Value, consensusType)
if err != nil {
return errors.Wrap(err, "unmarshal ConsensusType from config failed")
}
logger.Debugf("loadConfigValue - %s - Consensus type value :: %s", groupName, consensusType.Type)
// TODO: Do something with this value
break
case channelConfig.BatchSizeKey:
batchSize := &ab.BatchSize{}
err := proto.Unmarshal(configValue.Value, batchSize)
if err != nil {
return errors.Wrap(err, "unmarshal batch size from config failed")
}
logger.Debugf("loadConfigValue - %s - BatchSize maxMessageCount :: %d", groupName, batchSize.MaxMessageCount)
logger.Debugf("loadConfigValue - %s - BatchSize absoluteMaxBytes :: %d", groupName, batchSize.AbsoluteMaxBytes)
logger.Debugf("loadConfigValue - %s - BatchSize preferredMaxBytes :: %d", groupName, batchSize.PreferredMaxBytes)
// TODO: Do something with this value
break
case channelConfig.BatchTimeoutKey:
batchTimeout := &ab.BatchTimeout{}
err := proto.Unmarshal(configValue.Value, batchTimeout)
if err != nil {
return errors.Wrap(err, "unmarshal batch timeout from config failed")
}
logger.Debugf("loadConfigValue - %s - BatchTimeout timeout value :: %s", groupName, batchTimeout.Timeout)
// TODO: Do something with this value
break
case channelConfig.ChannelRestrictionsKey:
channelRestrictions := &ab.ChannelRestrictions{}
err := proto.Unmarshal(configValue.Value, channelRestrictions)
if err != nil {
return errors.Wrap(err, "unmarshal channel restrictions from config failed")
}
logger.Debugf("loadConfigValue - %s - ChannelRestrictions max_count value :: %d", groupName, channelRestrictions.MaxCount)
// TODO: Do something with this value
break
case channelConfig.HashingAlgorithmKey:
hashingAlgorithm := &common.HashingAlgorithm{}
err := proto.Unmarshal(configValue.Value, hashingAlgorithm)
if err != nil {
return errors.Wrap(err, "unmarshal hashing algorithm from config failed")
}
logger.Debugf("loadConfigValue - %s - HashingAlgorithm names value :: %s", groupName, hashingAlgorithm.Name)
// TODO: Do something with this value
break
case channelConfig.ConsortiumKey:
consortium := &common.Consortium{}
err := proto.Unmarshal(configValue.Value, consortium)
if err != nil {
return errors.Wrap(err, "unmarshal consortium from config failed")
}
logger.Debugf("loadConfigValue - %s - Consortium names value :: %s", groupName, consortium.Name)
// TODO: Do something with this value
break
case channelConfig.BlockDataHashingStructureKey:
bdhstruct := &common.BlockDataHashingStructure{}
err := proto.Unmarshal(configValue.Value, bdhstruct)
if err != nil {
return errors.Wrap(err, "unmarshal block data hashing structure from config failed")
}
logger.Debugf("loadConfigValue - %s - BlockDataHashingStructure width value :: %s", groupName, bdhstruct.Width)
// TODO: Do something with this value
break
case channelConfig.OrdererAddressesKey:
ordererAddresses := &common.OrdererAddresses{}
err := proto.Unmarshal(configValue.Value, ordererAddresses)
if err != nil {
return errors.Wrap(err, "unmarshal orderer addresses from config failed")
}
logger.Debugf("loadConfigValue - %s - OrdererAddresses addresses value :: %s", groupName, ordererAddresses.Addresses)
if len(ordererAddresses.Addresses) > 0 {
for _, ordererAddress := range ordererAddresses.Addresses {
configItems.orderers = append(configItems.orderers, ordererAddress)
}
}
break
default:
logger.Debugf("loadConfigValue - %s - value: %s", groupName, configValue.Value)
}
return nil
}
// peersToTxnProcessors converts a slice of Peers to a slice of ProposalProcessors
func peersToTxnProcessors(peers []fab.Peer) []fab.ProposalProcessor {
tpp := make([]fab.ProposalProcessor, len(peers))
for i := range peers {
tpp[i] = peers[i]
}
return tpp
}
//randomMaxTargets returns random sub set of max length targets
func randomMaxTargets(targets []fab.ProposalProcessor, max int) []fab.ProposalProcessor {
if len(targets) <= max {
return targets
}
for i := range targets {
j := rand.Intn(i + 1)
targets[i], targets[j] = targets[j], targets[i]
}
return targets[:max]
}