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Published: Jul 22, 2021 License: Apache-2.0 Imports: 16 Imported by: 0




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const (
	// V1_1Capability indicates that Fabric 1.1 features are supported
	V1_1Capability = "V1_1"
	// V1_2Capability indicates that Fabric 1.2 features are supported
	V1_2Capability = "V1_2"
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const EmptyTransactionID = TransactionID("")

EmptyTransactionID represents a non-existing transaction (usually due to error).

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const SystemChannel = ""

SystemChannel is the Fabric channel for managaing resources.


This section is empty.


This section is empty.


type BalancerType

type BalancerType string

BalancerType is the load-balancer type

const (
	// RoundRobin (default) chooses endorsers in a round-robin fashion
	RoundRobin BalancerType = "RoundRobin"

	// Random chooses endorsers randomly
	Random BalancerType = "Random"

type BlockEvent

type BlockEvent struct {
	// Block is the block that was committed
	Block *cb.Block
	// SourceURL specifies the URL of the peer that produced the event
	SourceURL string

BlockEvent contains the data for the block event

type BlockFilter

type BlockFilter func(block *cb.Block) bool

BlockFilter is a function that determines whether a Block event should be ignored

type BlockchainInfoResponse

type BlockchainInfoResponse struct {
	BCI      *common.BlockchainInfo
	Endorser string
	Status   int32

BlockchainInfoResponse wraps blockchain info with endorser info

type CCEvent

type CCEvent struct {
	// TxID is the ID of the transaction in which the event was set
	TxID string
	// ChaincodeID is the ID of the chaincode that set the event
	ChaincodeID string
	// EventName is the name of the chaincode event
	EventName string
	// Payload contains the payload of the chaincode event
	// NOTE: Payload will be nil for filtered events
	Payload []byte
	// BlockNumber contains the block number in which the
	// chaincode event was committed
	BlockNumber uint64
	// SourceURL specifies the URL of the peer that produced the event
	SourceURL string

CCEvent contains the data for a chaincode event

type CertKeyPair

type CertKeyPair struct {
	Cert []byte
	Key  []byte

CertKeyPair contains the private key and certificate

type ChaincodeCall

type ChaincodeCall struct {
	ID          string
	Collections []string

ChaincodeCall contains the ID of the chaincode as well as an optional set of private data collections that may be accessed by the chaincode.

type ChaincodeInvokeRequest

type ChaincodeInvokeRequest struct {
	ChaincodeID  string
	Lang         pb.ChaincodeSpec_Type
	TransientMap map[string][]byte
	Fcn          string
	Args         [][]byte
	IsInit       bool

ChaincodeInvokeRequest contains the parameters for sending a transaction proposal. nolint: maligned

type ChannelCfg

type ChannelCfg interface {
	ID() string
	BlockNumber() uint64
	MSPs() []*mspCfg.MSPConfig
	AnchorPeers() []*OrgAnchorPeer
	Orderers() []string
	Versions() *Versions
	HasCapability(group ConfigGroupKey, capability string) bool

ChannelCfg contains channel configuration

type ChannelConfig

type ChannelConfig interface {

	// Query channel configuration
	Query(reqCtx reqContext.Context) (ChannelCfg, error)

	// QueryBlock queries channel configuration block
	QueryBlock(reqCtx reqContext.Context) (*common.Block, error)

ChannelConfig allows for interaction with peer regarding channel configuration

type ChannelEndpointConfig

type ChannelEndpointConfig struct {
	// Orderers list of ordering service nodes
	Orderers []string
	// Peers a list of peer-channels that are part of this organization
	// to get the real Peer config object, use the Name field and fetch NetworkConfig.Peers[Name]
	Peers map[string]PeerChannelConfig
	//Policies list of policies for channel
	Policies ChannelPolicies

ChannelEndpointConfig provides the definition of channels for the network

type ChannelMembership

type ChannelMembership interface {
	// Validate if the given ID was issued by the channel's members
	Validate(serializedID []byte) error
	// Verify the given signature
	Verify(serializedID []byte, msg []byte, sig []byte) error
	//Check is given MSP is available
	ContainsMSP(msp string) bool

ChannelMembership helps identify a channel's members

type ChannelPeer

type ChannelPeer struct {

ChannelPeer combines channel peer info with raw peerConfig info

type ChannelPolicies

type ChannelPolicies struct {
	//Policy for querying channel block
	QueryChannelConfig QueryChannelConfigPolicy
	Discovery          DiscoveryPolicy
	Selection          SelectionPolicy
	EventService       EventServicePolicy

ChannelPolicies defines list of policies defined for a channel

type ChannelProvider

type ChannelProvider interface {
	ChannelService(ctx ClientContext, channelID string) (ChannelService, error)

ChannelProvider supplies Channel related-objects for the named channel.

type ChannelService

type ChannelService interface {
	Config() (ChannelConfig, error)
	EventService(opts ...options.Opt) (EventService, error)
	Membership() (ChannelMembership, error)
	ChannelConfig() (ChannelCfg, error)
	Transactor(reqCtx reqContext.Context) (Transactor, error)
	Discovery() (DiscoveryService, error)
	Selection() (SelectionService, error)

ChannelService supplies services related to a channel.

type ClientContext

type ClientContext interface {

ClientContext contains the client context

type CommManager

type CommManager interface {
	DialContext(ctx reqContext.Context, target string, opts ...grpc.DialOption) (*grpc.ClientConn, error)
	ReleaseConn(conn *grpc.ClientConn)

CommManager enables network communication.

type ConfigGroupKey

type ConfigGroupKey string

ConfigGroupKey is the config group key

const (
	// ChannelGroupKey is the Channel config group key
	ChannelGroupKey ConfigGroupKey = ""
	// OrdererGroupKey is the Orderer config group key
	OrdererGroupKey ConfigGroupKey = "Orderer"
	// ApplicationGroupKey is the Application config group key
	ApplicationGroupKey ConfigGroupKey = "Application"

type ConnectionEvent

type ConnectionEvent struct {
	Connected bool
	Err       error

ConnectionEvent is sent when the client disconnects from or reconnects to the event server. Connected == true means that the client has connected, whereas Connected == false means that the client has disconnected. In the disconnected case, Err contains the disconnect error.

type DiscoveryPolicy

type DiscoveryPolicy struct {
	MinResponses int
	MaxTargets   int
	RetryOpts    retry.Opts

DiscoveryPolicy defines policy for discovery

type DiscoveryService

type DiscoveryService interface {
	GetPeers() ([]Peer, error)

DiscoveryService is used to discover eligible peers on specific channel

type EnabledDisabled

type EnabledDisabled string

EnabledDisabled specifies whether or not a feature is enabled

const (
	// Enabled indicates that the feature is enabled.
	Enabled EnabledDisabled = "Enabled"

	// Disabled indicates that the feature is disabled.
	Disabled EnabledDisabled = "Disabled"

type EndpointConfig

type EndpointConfig interface {
	Timeout(TimeoutType) time.Duration
	OrderersConfig() []OrdererConfig
	OrdererConfig(nameOrURL string) (*OrdererConfig, bool, bool)
	PeersConfig(org string) ([]PeerConfig, bool)
	PeerConfig(nameOrURL string) (*PeerConfig, bool)
	NetworkConfig() *NetworkConfig
	NetworkPeers() []NetworkPeer
	ChannelConfig(name string) *ChannelEndpointConfig
	ChannelPeers(name string) []ChannelPeer
	ChannelOrderers(name string) []OrdererConfig
	TLSCACertPool() commtls.CertPool
	GMTLSCACertPool() commgmtls.CertPool
	TLSClientCerts() []tls.Certificate
	GMTLSClientCerts() []gmtls.Certificate
	CryptoConfigPath() string

EndpointConfig contains endpoint network configurations

type ErrorHandler

type ErrorHandler func(ctxt ClientContext, channelID string, err error)

ErrorHandler is invoked when an error occurs in one of the services

type EventClient

type EventClient interface {

	// Connect connects to the event server.
	Connect() error

	// Close closes the connection to the event server and releases all resources.
	// Once this function is invoked the client may no longer be used.

	// CloseIfIdle closes the connection to the event server only if there are no outstanding
	// registrations.
	// Returns true if the client was closed. In this case the client may no longer be used.
	// A return value of false indicates that the client could not be closed since
	// there was at least one registration.
	CloseIfIdle() bool

	// TransferRegistrations transfers all registrations into an EventSnapshot.
	// The registrations are not closed and may be transferred to a new event client.
	// - close: If true then the client will also be closed
	TransferRegistrations(close bool) (EventSnapshot, error)

EventClient is a client that connects to a peer and receives channel events such as block, filtered block, chaincode, and transaction status events.

type EventService

type EventService interface {
	// RegisterBlockEvent registers for block events. If the caller does not have permission
	// to register for block events then an error is returned.
	// Note that Unregister must be called when the registration is no longer needed.
	// - filter is an optional filter that filters out unwanted events. (Note: Only one filter may be specified.)
	// - Returns the registration and a channel that is used to receive events. The channel
	//   is closed when Unregister is called.
	RegisterBlockEvent(filter ...BlockFilter) (Registration, <-chan *BlockEvent, error)

	// RegisterFilteredBlockEvent registers for filtered block events.
	// Note that Unregister must be called when the registration is no longer needed.
	// - Returns the registration and a channel that is used to receive events. The channel
	//   is closed when Unregister is called.
	RegisterFilteredBlockEvent() (Registration, <-chan *FilteredBlockEvent, error)

	// RegisterChaincodeEvent registers for chaincode events.
	// Note that Unregister must be called when the registration is no longer needed.
	// - ccID is the chaincode ID for which events are to be received
	// - eventFilter is the chaincode event filter (regular expression) for which events are to be received
	// - Returns the registration and a channel that is used to receive events. The channel
	//   is closed when Unregister is called.
	RegisterChaincodeEvent(ccID, eventFilter string) (Registration, <-chan *CCEvent, error)

	// RegisterTxStatusEvent registers for transaction status events.
	// Note that Unregister must be called when the registration is no longer needed.
	// - txID is the transaction ID for which events are to be received
	// - Returns the registration and a channel that is used to receive events. The channel
	//   is closed when Unregister is called.
	RegisterTxStatusEvent(txID string) (Registration, <-chan *TxStatusEvent, error)

	// Unregister removes the given registration and closes the event channel.
	// - reg is the registration handle that was returned from one of the Register functions
	Unregister(reg Registration)

EventService is a service that receives events such as block, filtered block, chaincode, and transaction status events.

type EventServicePolicy

type EventServicePolicy struct {
	// ResolverStrategy returns the peer resolver strategy to use when connecting to a peer
	// Default: MinBlockHeightPeerResolver
	ResolverStrategy ResolverStrategy

	// Balancer is the balancer to use when choosing a peer to connect to
	Balancer BalancerType

	// MinBlockHeightResolverMode specifies the behaviour of the MinBlockHeight resolver. Note that this
	// parameter is used when ResolverStrategy is either MinBlockHeightStrategy or PreferOrgStrategy.
	// ResolveByThreshold (default): resolves to peers based on block height lag threshold, as specified by BlockHeightLagThreshold.
	// MinBlockHeightResolverMode: then only the peers with the latest block heights are chosen.
	MinBlockHeightResolverMode MinBlockHeightResolverMode

	// BlockHeightLagThreshold returns the block height lag threshold. This value is used for choosing a peer
	// to connect to. If a peer is lagging behind the most up-to-date peer by more than the given number of
	// blocks then it will be excluded from selection.
	BlockHeightLagThreshold int

	// PeerMonitor indicates whether or not to enable the peer monitor.
	PeerMonitor EnabledDisabled

	// ReconnectBlockHeightLagThreshold - if >0 then the event client will disconnect from the peer if the peer's
	// block height falls behind the specified number of blocks and will reconnect to a better performing peer.
	// If set to 0 (default) then the peer will not disconnect based on block height.
	// NOTE: Setting this value too low may cause the event client to disconnect/reconnect too frequently, thereby
	// affecting performance.
	ReconnectBlockHeightLagThreshold int

	// PeerMonitorPeriod is the period in which the connected peer is monitored to see if
	// the event client should disconnect from it and reconnect to another peer.
	// If set to 0 then the peer will not be monitored and will not be disconnected.
	PeerMonitorPeriod time.Duration

EventServicePolicy specifies the policy for the event service

type EventSnapshot

type EventSnapshot interface {
	// LastBlockReceived returns the block number of the last block received at the time
	// that the snapshot was taken.
	LastBlockReceived() uint64

	// BlockRegistrations returns the block registrations.
	BlockRegistrations() []Registration

	// FilteredBlockRegistrations returns the filtered block registrations.
	FilteredBlockRegistrations() []Registration

	// CCRegistrations returns the chaincode registrations.
	CCRegistrations() []Registration

	// TxStatusRegistrations returns the transaction status registrations.
	TxStatusRegistrations() []Registration

	// Closes all registrations

EventSnapshot contains a snapshot of the event client before it was stopped. The snapshot includes all of the event registrations and the last block received.

type FilteredBlockEvent

type FilteredBlockEvent struct {
	// FilteredBlock contains a filtered version of the block that was committed
	FilteredBlock *pb.FilteredBlock
	// SourceURL specifies the URL of the peer that produced the event
	SourceURL string

FilteredBlockEvent contains the data for a filtered block event

type InfraProvider

type InfraProvider interface {
	CreatePeerFromConfig(peerCfg *NetworkPeer) (Peer, error)
	CreateOrdererFromConfig(cfg *OrdererConfig) (Orderer, error)
	CommManager() CommManager

InfraProvider enables access to fabric objects such as peer and user based on config or

type LocalDiscoveryProvider

type LocalDiscoveryProvider interface {
	CreateLocalDiscoveryService(mspID string) (DiscoveryService, error)

LocalDiscoveryProvider is used to discover peers in the local MSP

type MetricsProvider

type MetricsProvider interface {
	GetMetrics() *metrics.ClientMetrics

MetricsProvider represents a provider of metrics.

type MinBlockHeightResolverMode

type MinBlockHeightResolverMode string

MinBlockHeightResolverMode specifies the behaviour of the MinBlockHeight resolver strategy.

const (
	// ResolveByThreshold resolves to peers based on block height lag threshold.
	ResolveByThreshold MinBlockHeightResolverMode = "ResolveByThreshold"

	// ResolveLatest resolves to peers with the most up-to-date block height
	ResolveLatest MinBlockHeightResolverMode = "ResolveLatest"

type NetworkConfig

type NetworkConfig struct {
	Channels      map[string]ChannelEndpointConfig
	Organizations map[string]OrganizationConfig
	Orderers      map[string]OrdererConfig
	Peers         map[string]PeerConfig

NetworkConfig provides a static definition of endpoint configuration network

type NetworkPeer

type NetworkPeer struct {
	MSPID      string
	Properties map[Property]interface{}

NetworkPeer combines peer info with MSP info

type Orderer

type Orderer interface {
	URL() string
	SendBroadcast(ctx reqContext.Context, envelope *SignedEnvelope) (*common.Status, error)
	SendDeliver(ctx reqContext.Context, envelope *SignedEnvelope) (chan *common.Block, chan error)

Orderer The Orderer class represents a peer in the target blockchain network to which HFC sends a block of transactions of endorsed proposals requiring ordering.

type OrdererConfig

type OrdererConfig struct {
	URL         string
	GRPCOptions map[string]interface{}
	TLSCACert   *x509.Certificate

OrdererConfig defines an orderer configuration

type OrgAnchorPeer

type OrgAnchorPeer struct {
	Org  string
	Host string
	Port int32

OrgAnchorPeer contains information about an anchor peer on this channel

type OrganizationConfig

type OrganizationConfig struct {
	MSPID                  string
	CryptoPath             string
	Users                  map[string]CertKeyPair
	Peers                  []string
	CertificateAuthorities []string

OrganizationConfig provides the definition of an organization in the network

type Peer

type Peer interface {
	// MSPID gets the Peer mspID.
	MSPID() string

	//URL gets the peer address
	URL() string

	// Properties returns properties of the peer.
	Properties() Properties

The Peer class represents a peer in the target blockchain network to which HFC sends endorsement proposals or query requests.

type PeerChannelConfig

type PeerChannelConfig struct {
	EndorsingPeer  bool
	ChaincodeQuery bool
	LedgerQuery    bool
	EventSource    bool

PeerChannelConfig defines the peer capabilities

type PeerConfig

type PeerConfig struct {
	URL         string
	GRPCOptions map[string]interface{}
	TLSCACert   *x509.Certificate

PeerConfig defines a peer configuration

type PeerState

type PeerState interface {
	BlockHeight() uint64

PeerState provides state information about the Peer

type PrioritySelector

type PrioritySelector interface {
	// A positive return value means peer1 is selected
	// A negative return value means the peer2 is selected
	// Zero return value means their priorities are the same
	Compare(peer1, peer2 Peer) int

PrioritySelector determines how likely a peer is to be selected over another peer

type ProcessProposalRequest

type ProcessProposalRequest struct {
	SignedProposal *pb.SignedProposal

ProcessProposalRequest requests simulation of a proposed transaction from transaction processors.

type Properties

type Properties map[Property]interface{}

Properties defines the properties of a peer

type Property

type Property = string

Property is the key into the Properties map

const (
	// PropertyChaincodes defines the chaincodes that are deployed on the peer. Value type:[]*github.com/hyperledger/fabric-protos-go/gossip.Chaincode
	PropertyChaincodes Property = "Chaincodes"
	// PropertyLedgerHeight defines the ledger height property. Value type: uint64
	PropertyLedgerHeight Property = "LedgerHeight"
	// PropertyLeftChannel defines the "left-channel" property which indicates whether the peer left the channel. Value type: bool
	PropertyLeftChannel Property = "LeftChannel"

Following is a well-known list of properties of a peer, although this list may be extended.

type ProposalProcessor

type ProposalProcessor interface {
	ProcessTransactionProposal(reqContext.Context, ProcessProposalRequest) (*TransactionProposalResponse, error)

ProposalProcessor simulates transaction proposal, so that a client can submit the result for ordering.

type ProposalSender

type ProposalSender interface {
	CreateTransactionHeader(opts ...TxnHeaderOpt) (TransactionHeader, error)
	SendTransactionProposal(*TransactionProposal, []ProposalProcessor) ([]*TransactionProposalResponse, error)

ProposalSender provides the ability for a transaction proposal to be created and sent.

type Providers

type Providers interface {
	LocalDiscoveryProvider() LocalDiscoveryProvider
	ChannelProvider() ChannelProvider
	InfraProvider() InfraProvider
	EndpointConfig() EndpointConfig

Providers represents the SDK configured service providers context.

type QueryChannelConfigPolicy

type QueryChannelConfigPolicy struct {
	MinResponses int
	MaxTargets   int
	RetryOpts    retry.Opts

QueryChannelConfigPolicy defines policy for channelConfigBlock

type Registration

type Registration interface{}

Registration is a handle that is returned from a successful RegisterXXXEvent. This handle should be used in Unregister in order to unregister the event.

type ResolverStrategy

type ResolverStrategy string

ResolverStrategy is the peer resolver type

const (
	// BalancedStrategy is a peer resolver strategy that chooses peers based on a configured load balancer
	BalancedStrategy ResolverStrategy = "Balanced"

	// MinBlockHeightStrategy is a peer resolver strategy that chooses the best peer according to a block height lag threshold.
	// The maximum block height of all peers is determined and the peers whose block heights are under the maximum height but above
	// a provided "lag" threshold are load balanced. The other peers are not considered.
	MinBlockHeightStrategy ResolverStrategy = "MinBlockHeight"

	// PreferOrgStrategy is a peer resolver strategy that determines which peers are suitable based on block height lag threshold,
	// although will prefer the peers in the current org (as long as their block height is above a configured threshold).
	// If none of the peers from the current org are suitable then a peer from another org is chosen.
	PreferOrgStrategy ResolverStrategy = "PreferOrg"

type SelectionPolicy

type SelectionPolicy struct {
	// SortingStrategy is the endorser sorting strategy to use
	SortingStrategy SelectionSortingStrategy

	// BalancerType is the balancer to use in order to load-balance calls to endorsers
	Balancer BalancerType

	// BlockHeightLagThreshold is the number of blocks from the highest block number of a group of peers
	// that a peer can lag behind and still be considered to be up-to-date. These peers will be sorted
	// using the given Balancer. If a peer's block height falls behind this threshold then it will be
	// demoted to a lower priority list of peers which will be sorted according to block height.
	// Note: This property only applies to BlockHeightPriority sorter
	BlockHeightLagThreshold int

SelectionPolicy defines policy for selection

type SelectionService

type SelectionService interface {
	// GetEndorsersForChaincode returns a set of peers that should satisfy the endorsement
	// policies of all of the given chaincodes.
	// A set of options may be provided to the selection service. Note that the type of options
	// may vary depending on the specific selection service implementation.
	GetEndorsersForChaincode(chaincodes []*ChaincodeCall, opts ...options.Opt) ([]Peer, error)

SelectionService selects peers for endorsement and commit events

type SelectionSortingStrategy

type SelectionSortingStrategy string

SelectionSortingStrategy is the endorser selection sorting strategy

const (
	// BlockHeightPriority (default) is a load-balancing selection sorting strategy
	// which also prioritizes peers at a block height that is above a certain "lag" threshold.
	BlockHeightPriority SelectionSortingStrategy = "BlockHeightPriority"

	// Balanced is a load-balancing selection sorting strategy
	Balanced SelectionSortingStrategy = "Balanced"

type Sender

type Sender interface {
	CreateTransaction(request TransactionRequest) (*Transaction, error)
	SendTransaction(tx *Transaction) (*TransactionResponse, error)

Sender provides the ability for a transaction to be created and sent.

TODO: CreateTransaction should be refactored as it is actually a factory method.

type SignedEnvelope

type SignedEnvelope struct {
	Payload   []byte
	Signature []byte

A SignedEnvelope can can be sent to an orderer for broadcasting

type TargetFilter

type TargetFilter interface {
	// Accept returns true if peer should be included in the list of target peers
	Accept(peer Peer) bool

TargetFilter allows for filtering target peers

type TargetSorter

type TargetSorter interface {
	// Returns the sorted peers
	Sort(peers []Peer) []Peer

TargetSorter allows for sorting target peers

type TimeoutType

type TimeoutType int

TimeoutType enumerates the different types of outgoing connections

const (
	// PeerConnection connection timeout
	PeerConnection TimeoutType = iota
	// EventReg connection timeout
	// Query timeout
	// Execute timeout
	// OrdererConnection orderer connection timeout
	// OrdererResponse orderer response timeout
	// DiscoveryGreylistExpiry discovery Greylist expiration period
	// ConnectionIdle is the timeout for closing idle connections
	// CacheSweepInterval is the duration between cache sweeps
	// EventServiceIdle is the timeout for closing the event service connection
	// PeerResponse peer response timeout
	// ResMgmt timeout is default overall timeout for all resource management operations
	// ChannelConfigRefresh channel configuration refresh interval
	// ChannelMembershipRefresh channel membership refresh interval
	// DiscoveryConnection discovery connection timeout
	// DiscoveryResponse discovery response timeout
	// DiscoveryServiceRefresh discovery service refresh interval
	// SelectionServiceRefresh selection service refresh interval

type Transaction

type Transaction struct {
	Proposal    *TransactionProposal
	Transaction *pb.Transaction

The Transaction object created from an endorsed proposal.

type TransactionHeader

type TransactionHeader interface {
	TransactionID() TransactionID
	Creator() []byte
	Nonce() []byte
	ChannelID() string

TransactionHeader provides a handle to transaction metadata.

type TransactionID

type TransactionID string

TransactionID provides the identifier of a Fabric transaction proposal.

type TransactionProposal

type TransactionProposal struct {
	TxnID TransactionID

TransactionProposal contains a marashalled transaction proposal.

type TransactionProposalResponse

type TransactionProposalResponse struct {
	Endorser string
	// Status is the EndorserStatus
	Status int32
	// ChaincodeStatus is the status returned by Chaincode
	ChaincodeStatus int32

TransactionProposalResponse respresents the result of transaction proposal processing.

type TransactionRequest

type TransactionRequest struct {
	Proposal          *TransactionProposal
	ProposalResponses []*TransactionProposalResponse

TransactionRequest holds endorsed Transaction Proposals.

type TransactionResponse

type TransactionResponse struct {
	Orderer string

TransactionResponse contains information returned by the orderer.

type Transactor

type Transactor interface {

Transactor supplies methods for sending transaction proposals and transactions.

type TxStatusEvent

type TxStatusEvent struct {
	// TxID is the ID of the transaction in which the event was set
	TxID string
	// TxValidationCode is the status code of the commit
	TxValidationCode pb.TxValidationCode
	// BlockNumber contains the block number in which the
	// transaction was committed
	BlockNumber uint64
	// SourceURL specifies the URL of the peer that produced the event
	SourceURL string

TxStatusEvent contains the data for a transaction status event

type TxnHeaderOpt

type TxnHeaderOpt func(*TxnHeaderOptions)

TxnHeaderOpt is a Transaction Header option

func WithCreator

func WithCreator(creator []byte) TxnHeaderOpt

WithCreator specifies the creator to use when creating the Transaction Header

func WithNonce

func WithNonce(nonce []byte) TxnHeaderOpt

WithNonce specifies the nonce to use when creating the Transaction Header

type TxnHeaderOptions

type TxnHeaderOptions struct {
	Nonce   []byte
	Creator []byte

TxnHeaderOptions contains options for creating a Transaction Header

type Versions

type Versions struct {
	ReadSet  *common.ConfigGroup
	WriteSet *common.ConfigGroup
	Channel  *common.ConfigGroup

Versions ...

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