chaincode

package
Version: v2.1.1+incompatible Latest Latest
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Published: Jun 1, 2020 License: Apache-2.0 Imports: 29 Imported by: 0

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Index

Constants

View Source
const DevModeUserRunsChaincode string = "dev"

DevModeUserRunsChaincode enables chaincode execution in a development environment

View Source
const (
	// InitializedKeyName is the reserved key in a chaincode's namespace which
	// records the ID of the chaincode which initialized the namespace.
	// In this way, we can enforce Init exactly once semantics, whenever
	// the backing chaincode bytes change (but not be required to re-initialize
	// the chaincode say, when endorsement policy changes).
	InitializedKeyName = "\x00" + string(utf8.MaxRune) + "initialized"
)

Variables

This section is empty.

Functions

func IsDevMode

func IsDevMode() bool

IsDevMode returns true if the peer was configured with development-mode enabled.

func NewTxKey added in v1.2.0

func NewTxKey(channelID, txID string) string

func ParseName added in v1.2.0

func ParseName(ccName string) *sysccprovider.ChaincodeInstance

ParseName parses a chaincode name into a ChaincodeInstance. The name should be of the form "chaincode-name:version/channel-name" with optional elements.

Types

type ACLProvider added in v1.2.0

type ACLProvider interface {
	CheckACL(resName string, channelID string, idinfo interface{}) error
}

An ACLProvider performs access control checks when invoking chaincode.

type ActiveTransactions added in v1.2.0

type ActiveTransactions struct {
	// contains filtered or unexported fields
}

func NewActiveTransactions added in v1.2.0

func NewActiveTransactions() *ActiveTransactions

func (*ActiveTransactions) Add added in v1.2.0

func (a *ActiveTransactions) Add(channelID, txID string) bool

func (*ActiveTransactions) Remove added in v1.2.0

func (a *ActiveTransactions) Remove(channelID, txID string)

type ApplicationConfigRetriever added in v1.3.0

type ApplicationConfigRetriever interface {
	// GetApplicationConfig returns the channelconfig.Application for the channel
	// and whether the Application config exists
	GetApplicationConfig(cid string) (channelconfig.Application, bool)
}

ApplicationConfigRetriever to retrieve the application configuration for a channel

type CertGenerator added in v1.2.0

type CertGenerator interface {
	// Generate returns a certificate and private key and associates
	// the hash of the certificates with the given chaincode name
	Generate(ccName string) (*accesscontrol.CertAndPrivKeyPair, error)
}

CertGenerator generates client certificates for chaincode.

type ChaincodeSupport

type ChaincodeSupport struct {
	ACLProvider            ACLProvider
	AppConfig              ApplicationConfigRetriever
	BuiltinSCCs            scc.BuiltinSCCs
	DeployedCCInfoProvider ledger.DeployedChaincodeInfoProvider
	ExecuteTimeout         time.Duration
	InstallTimeout         time.Duration
	HandlerMetrics         *HandlerMetrics
	HandlerRegistry        *HandlerRegistry
	Keepalive              time.Duration
	Launcher               Launcher
	Lifecycle              Lifecycle
	Peer                   *peer.Peer
	Runtime                Runtime
	TotalQueryLimit        int
	UserRunsCC             bool
}

ChaincodeSupport responsible for providing interfacing with chaincodes from the Peer.

func (*ChaincodeSupport) CheckInvocation

func (cs *ChaincodeSupport) CheckInvocation(txParams *ccprovider.TransactionParams, chaincodeName string, input *pb.ChaincodeInput) (ccid string, cctype pb.ChaincodeMessage_Type, err error)

CheckInvocation inspects the parameters of an invocation and determines if, how, and to where a that invocation should be routed. First, we ensure that the target namespace is defined on the channel and invokable on this peer, according to the lifecycle implementation. Then, if the chaincode definition requires it, this function enforces 'init exactly once' semantics. Finally, it returns the chaincode ID to route to and the message type of the request (normal transation, or init).

func (*ChaincodeSupport) Execute

func (cs *ChaincodeSupport) Execute(txParams *ccprovider.TransactionParams, chaincodeName string, input *pb.ChaincodeInput) (*pb.Response, *pb.ChaincodeEvent, error)

Execute invokes chaincode and returns the original response.

func (*ChaincodeSupport) ExecuteLegacyInit added in v1.3.0

func (cs *ChaincodeSupport) ExecuteLegacyInit(txParams *ccprovider.TransactionParams, ccName, ccVersion string, input *pb.ChaincodeInput) (*pb.Response, *pb.ChaincodeEvent, error)

ExecuteLegacyInit is a temporary method which should be removed once the old style lifecycle is entirely deprecated. Ideally one release after the introduction of the new lifecycle. It does not attempt to start the chaincode based on the information from lifecycle, but instead accepts the container information directly in the form of a ChaincodeDeploymentSpec.

func (*ChaincodeSupport) HandleChaincodeStream

func (cs *ChaincodeSupport) HandleChaincodeStream(stream ccintf.ChaincodeStream) error

HandleChaincodeStream implements ccintf.HandleChaincodeStream for all vms to call with appropriate stream

func (*ChaincodeSupport) Invoke added in v1.2.0

func (cs *ChaincodeSupport) Invoke(txParams *ccprovider.TransactionParams, chaincodeName string, input *pb.ChaincodeInput) (*pb.ChaincodeMessage, error)

Invoke will invoke chaincode and return the message containing the response. The chaincode will be launched if it is not already running.

func (*ChaincodeSupport) Launch

func (cs *ChaincodeSupport) Launch(ccid string) (*Handler, error)

Launch starts executing chaincode if it is not already running. This method blocks until the peer side handler gets into ready state or encounters a fatal error. If the chaincode is already running, it simply returns.

func (*ChaincodeSupport) LaunchInProc

func (cs *ChaincodeSupport) LaunchInProc(ccid string) <-chan struct{}

LaunchInProc is a stopgap solution to be called by the inproccontroller to allow system chaincodes to register

func (*ChaincodeSupport) Register

Register the bidi stream entry point called by chaincode to register with the Peer.

type CollectionACLCache

type CollectionACLCache map[string]*readWritePermission

CollectionACLCache encapsulates a cache that stores read write permission on a collection

type Config added in v1.2.0

type Config struct {
	TotalQueryLimit int
	TLSEnabled      bool
	Keepalive       time.Duration
	ExecuteTimeout  time.Duration
	InstallTimeout  time.Duration
	StartupTimeout  time.Duration
	LogFormat       string
	LogLevel        string
	ShimLogLevel    string
	SCCWhitelist    map[string]bool
}

func GlobalConfig added in v1.2.0

func GlobalConfig() *Config

type ConnectionHandler

type ConnectionHandler interface {
	Stream(ccid string, ccinfo *ccintf.ChaincodeServerInfo, sHandler extcc.StreamHandler) error
}

ConnectionHandler handles the `Chaincode` client connection

type ContainerRouter

type ContainerRouter interface {
	Build(ccid string) error
	ChaincodeServerInfo(ccid string) (*ccintf.ChaincodeServerInfo, error)
	Start(ccid string, peerConnection *ccintf.PeerConnection) error
	Stop(ccid string) error
	Wait(ccid string) (int, error)
}

ContainerRouter is a poor abstraction used for building, and running chaincode processes. This management probably does not belong in this package, chaincode process lifecycle should be driven by what chaincodes are defined, what chaincodes are instantiated, and not driven by invocations. But, the legacy lifecycle makes this very challenging. Once the legacy lifecycle is removed (or perhaps before), this interface should probably go away entirely.

type ContainerRuntime added in v1.2.0

type ContainerRuntime struct {
	ContainerRouter ContainerRouter
	BuildRegistry   *container.BuildRegistry
}

ContainerRuntime is responsible for managing containerized chaincode.

func (*ContainerRuntime) Build

Build builds the chaincode if necessary and returns ChaincodeServerInfo if the chaincode is a server

func (*ContainerRuntime) Start added in v1.2.0

func (c *ContainerRuntime) Start(ccid string, ccinfo *ccintf.PeerConnection) error

Start launches chaincode in a runtime environment.

func (*ContainerRuntime) Stop added in v1.2.0

func (c *ContainerRuntime) Stop(ccid string) error

Stop terminates chaincode and its container runtime environment.

func (*ContainerRuntime) Wait added in v1.4.1

func (c *ContainerRuntime) Wait(ccid string) (int, error)

Wait waits for the container runtime to terminate.

type ContextRegistry added in v1.2.0

type ContextRegistry interface {
	Create(txParams *ccprovider.TransactionParams) (*TransactionContext, error)
	Get(chainID, txID string) *TransactionContext
	Delete(chainID, txID string)
	Close()
}

A ContextRegistry is responsible for managing transaction contexts.

type Handler

type Handler struct {
	// Keepalive specifies the interval at which keep-alive messages are sent.
	Keepalive time.Duration
	// TotalQueryLimit specifies the maximum number of results to return for
	// chaincode queries.
	TotalQueryLimit int
	// Invoker is used to invoke chaincode.
	Invoker Invoker
	// Registry is used to track active handlers.
	Registry Registry
	// ACLProvider is used to check if a chaincode invocation should be allowed.
	ACLProvider ACLProvider
	// TXContexts is a collection of TransactionContext instances
	// that are accessed by channel name and transaction ID.
	TXContexts ContextRegistry
	// activeTransactions holds active transaction identifiers.
	ActiveTransactions TransactionRegistry
	// BuiltinSCCs can be used to determine if a name is associated with a system chaincode
	BuiltinSCCs scc.BuiltinSCCs
	// QueryResponseBuilder is used to build query responses
	QueryResponseBuilder QueryResponseBuilder
	// LedgerGetter is used to get the ledger associated with a channel
	LedgerGetter LedgerGetter
	// DeployedCCInfoProvider is used to initialize the Collection Store
	DeployedCCInfoProvider ledger.DeployedChaincodeInfoProvider
	// UUIDGenerator is used to generate UUIDs
	UUIDGenerator UUIDGenerator
	// AppConfig is used to retrieve the application config for a channel
	AppConfig ApplicationConfigRetriever
	// Metrics holds chaincode handler metrics
	Metrics *HandlerMetrics
	// contains filtered or unexported fields
}

Handler implements the peer side of the chaincode stream.

func (*Handler) Close added in v1.2.0

func (h *Handler) Close()

func (*Handler) Execute added in v1.2.0

func (h *Handler) Execute(txParams *ccprovider.TransactionParams, namespace string, msg *pb.ChaincodeMessage, timeout time.Duration) (*pb.ChaincodeMessage, error)

func (*Handler) HandleDelState added in v1.2.0

func (h *Handler) HandleDelState(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

func (*Handler) HandleGetHistoryForKey added in v1.2.0

func (h *Handler) HandleGetHistoryForKey(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles query to ledger history db

func (*Handler) HandleGetPrivateDataHash added in v1.4.2

func (h *Handler) HandleGetPrivateDataHash(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

func (*Handler) HandleGetQueryResult added in v1.2.0

func (h *Handler) HandleGetQueryResult(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles query to ledger to execute query state

func (*Handler) HandleGetState added in v1.2.0

func (h *Handler) HandleGetState(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles query to ledger to get state

func (*Handler) HandleGetStateByRange added in v1.2.0

func (h *Handler) HandleGetStateByRange(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles query to ledger to rage query state

func (*Handler) HandleGetStateMetadata added in v1.3.0

func (h *Handler) HandleGetStateMetadata(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles query to ledger to get state metadata

func (*Handler) HandleInvokeChaincode added in v1.2.0

func (h *Handler) HandleInvokeChaincode(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles requests that modify ledger state

func (*Handler) HandlePutState added in v1.2.0

func (h *Handler) HandlePutState(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

func (*Handler) HandlePutStateMetadata added in v1.3.0

func (h *Handler) HandlePutStateMetadata(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

func (*Handler) HandleQueryStateClose added in v1.2.0

func (h *Handler) HandleQueryStateClose(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles the closing of a state iterator

func (*Handler) HandleQueryStateNext added in v1.2.0

func (h *Handler) HandleQueryStateNext(msg *pb.ChaincodeMessage, txContext *TransactionContext) (*pb.ChaincodeMessage, error)

Handles query to ledger for query state next

func (*Handler) HandleRegister added in v1.2.0

func (h *Handler) HandleRegister(msg *pb.ChaincodeMessage)

handleRegister is invoked when chaincode tries to register.

func (*Handler) HandleTransaction added in v1.2.0

func (h *Handler) HandleTransaction(msg *pb.ChaincodeMessage, delegate handleFunc)

HandleTransaction is a middleware function that obtains and verifies a transaction context prior to forwarding the message to the provided delegate. Response messages returned by the delegate are sent to the chat stream. Any errors returned by the delegate are packaged as chaincode error messages.

func (*Handler) Notify added in v1.2.0

func (h *Handler) Notify(msg *pb.ChaincodeMessage)

func (*Handler) ProcessStream added in v1.2.0

func (h *Handler) ProcessStream(stream ccintf.ChaincodeStream) error

func (*Handler) State added in v1.2.0

func (h *Handler) State() State

type HandlerMetrics added in v1.4.0

type HandlerMetrics struct {
	ShimRequestsReceived  metrics.Counter
	ShimRequestsCompleted metrics.Counter
	ShimRequestDuration   metrics.Histogram
	ExecuteTimeouts       metrics.Counter
}

func NewHandlerMetrics added in v1.4.0

func NewHandlerMetrics(p metrics.Provider) *HandlerMetrics

type HandlerRegistry added in v1.2.0

type HandlerRegistry struct {
	// contains filtered or unexported fields
}

HandlerRegistry maintains chaincode Handler instances.

func NewHandlerRegistry added in v1.2.0

func NewHandlerRegistry(allowUnsolicitedRegistration bool) *HandlerRegistry

NewHandlerRegistry constructs a HandlerRegistry.

func (*HandlerRegistry) Deregister added in v1.2.0

func (r *HandlerRegistry) Deregister(ccid string) error

Deregister clears references to state associated specified chaincode. As part of the cleanup, it closes the handler so it can cleanup any state. If the registry does not contain the provided handler, an error is returned.

func (*HandlerRegistry) Failed added in v1.2.0

func (r *HandlerRegistry) Failed(ccid string, err error)

Failed indicates that registration of a launched chaincode has failed.

func (*HandlerRegistry) Handler added in v1.2.0

func (r *HandlerRegistry) Handler(ccid string) *Handler

Handler retrieves the handler for a chaincode instance.

func (*HandlerRegistry) Launching added in v1.2.0

func (r *HandlerRegistry) Launching(ccid string) (*LaunchState, bool)

Launching indicates that chaincode is being launched. The LaunchState that is returned provides mechanisms to determine when the operation has completed and whether or not it failed. The bool indicates whether or not the chaincode has already been started.

func (*HandlerRegistry) Ready added in v1.2.0

func (r *HandlerRegistry) Ready(ccid string)

Ready indicates that the chaincode registration has completed and the READY response has been sent to the chaincode.

func (*HandlerRegistry) Register added in v1.2.0

func (r *HandlerRegistry) Register(h *Handler) error

Register adds a chaincode handler to the registry. An error will be returned if a handler is already registered for the chaincode. An error will also be returned if the chaincode has not already been "launched", and unsolicited registration is not allowed.

type Invoker added in v1.2.0

type Invoker interface {
	Invoke(txParams *ccprovider.TransactionParams, chaincodeName string, spec *pb.ChaincodeInput) (*pb.ChaincodeMessage, error)
}

An Invoker invokes chaincode.

type LaunchMetrics added in v1.4.0

type LaunchMetrics struct {
	LaunchDuration metrics.Histogram
	LaunchFailures metrics.Counter
	LaunchTimeouts metrics.Counter
}

func NewLaunchMetrics added in v1.4.0

func NewLaunchMetrics(p metrics.Provider) *LaunchMetrics

type LaunchRegistry added in v1.2.0

type LaunchRegistry interface {
	Launching(ccid string) (launchState *LaunchState, started bool)
	Deregister(ccid string) error
}

LaunchRegistry tracks launching chaincode instances.

type LaunchState added in v1.2.0

type LaunchState struct {
	// contains filtered or unexported fields
}

func NewLaunchState added in v1.2.0

func NewLaunchState() *LaunchState

func (*LaunchState) Done added in v1.2.0

func (l *LaunchState) Done() <-chan struct{}

func (*LaunchState) Err added in v1.2.0

func (l *LaunchState) Err() error

func (*LaunchState) Notify added in v1.2.0

func (l *LaunchState) Notify(err error)

type Launcher added in v1.2.0

type Launcher interface {
	Launch(ccid string, streamHandler extcc.StreamHandler) error
	Stop(ccid string) error
}

Launcher is used to launch chaincode runtimes.

type LedgerGetter added in v1.2.0

type LedgerGetter interface {
	GetLedger(cid string) ledger.PeerLedger
}

LedgerGetter is used to get ledgers for chaincode.

type Lifecycle added in v1.2.0

type Lifecycle interface {
	// ChaincodeEndorsementInfo looks up the chaincode info in the given channel.  It is the responsibility
	// of the implementation to add appropriate read dependencies for the information returned.
	ChaincodeEndorsementInfo(channelID, chaincodeName string, qe ledger.SimpleQueryExecutor) (*lifecycle.ChaincodeEndorsementInfo, error)
}

Lifecycle provides a way to retrieve chaincode definitions and the packages necessary to run them

type MessageHandler

type MessageHandler interface {
	Handle(*pb.ChaincodeMessage, *TransactionContext) (*pb.ChaincodeMessage, error)
}

type PendingQueryResult added in v1.2.0

type PendingQueryResult struct {
	// contains filtered or unexported fields
}

func (*PendingQueryResult) Add added in v1.2.0

func (p *PendingQueryResult) Add(queryResult commonledger.QueryResult) error

func (*PendingQueryResult) Cut added in v1.2.0

func (*PendingQueryResult) Size added in v1.2.0

func (p *PendingQueryResult) Size() int

type QueryResponseBuilder added in v1.2.0

type QueryResponseBuilder interface {
	BuildQueryResponse(txContext *TransactionContext, iter commonledger.ResultsIterator,
		iterID string, isPaginated bool, totalReturnLimit int32) (*pb.QueryResponse, error)
}

QueryResponseBuilder is responsible for building QueryResponse messages for query transactions initiated by chaincode.

type QueryResponseGenerator added in v1.2.0

type QueryResponseGenerator struct {
	MaxResultLimit int
}

func (*QueryResponseGenerator) BuildQueryResponse added in v1.2.0

func (q *QueryResponseGenerator) BuildQueryResponse(txContext *TransactionContext, iter commonledger.ResultsIterator,
	iterID string, isPaginated bool, totalReturnLimit int32) (*pb.QueryResponse, error)

BuildQueryResponse takes an iterator and fetch state to construct QueryResponse

type Registry added in v1.2.0

type Registry interface {
	Register(*Handler) error
	Ready(string)
	Failed(string, error)
	Deregister(string) error
}

A Registry is responsible for tracking handlers.

type Runtime added in v1.2.0

type Runtime interface {
	Build(ccid string) (*ccintf.ChaincodeServerInfo, error)
	Start(ccid string, ccinfo *ccintf.PeerConnection) error
	Stop(ccid string) error
	Wait(ccid string) (int, error)
}

Runtime is used to manage chaincode runtime instances.

type RuntimeLauncher added in v1.2.0

type RuntimeLauncher struct {
	Runtime           Runtime
	Registry          LaunchRegistry
	StartupTimeout    time.Duration
	Metrics           *LaunchMetrics
	PeerAddress       string
	CACert            []byte
	CertGenerator     CertGenerator
	ConnectionHandler ConnectionHandler
}

RuntimeLauncher is responsible for launching chaincode runtimes.

func (*RuntimeLauncher) ChaincodeClientInfo

func (r *RuntimeLauncher) ChaincodeClientInfo(ccid string) (*ccintf.PeerConnection, error)

func (*RuntimeLauncher) Launch added in v1.2.0

func (r *RuntimeLauncher) Launch(ccid string, streamHandler extcc.StreamHandler) error

func (*RuntimeLauncher) Stop

func (r *RuntimeLauncher) Stop(ccid string) error

type State added in v1.2.0

type State int
const (
	Created State = iota
	Established
	Ready
)

func (State) String added in v1.2.0

func (s State) String() string

type TransactionContext added in v1.2.0

type TransactionContext struct {
	ChannelID            string
	NamespaceID          string
	SignedProp           *pb.SignedProposal
	Proposal             *pb.Proposal
	ResponseNotifier     chan *pb.ChaincodeMessage
	TXSimulator          ledger.TxSimulator
	HistoryQueryExecutor ledger.HistoryQueryExecutor
	CollectionStore      privdata.CollectionStore
	IsInitTransaction    bool

	// cache used to save the result of collection acl
	// as a transactionContext is created for every chaincode
	// invoke (even in case of chaincode-calling-chaincode,
	// we do not need to store the namespace in the map and
	// collection alone is sufficient.
	CollectionACLCache CollectionACLCache
	// contains filtered or unexported fields
}

func (*TransactionContext) CleanupQueryContext added in v1.2.0

func (t *TransactionContext) CleanupQueryContext(queryID string)

func (*TransactionContext) CleanupQueryContextWithBookmark added in v1.3.0

func (t *TransactionContext) CleanupQueryContextWithBookmark(queryID string) string

func (*TransactionContext) CloseQueryIterators added in v1.2.0

func (t *TransactionContext) CloseQueryIterators()

func (*TransactionContext) GetPendingQueryResult added in v1.2.0

func (t *TransactionContext) GetPendingQueryResult(queryID string) *PendingQueryResult

func (*TransactionContext) GetQueryIterator added in v1.2.0

func (t *TransactionContext) GetQueryIterator(queryID string) commonledger.ResultsIterator

func (*TransactionContext) GetTotalReturnCount added in v1.3.0

func (t *TransactionContext) GetTotalReturnCount(queryID string) *int32

func (*TransactionContext) InitializeCollectionACLCache

func (t *TransactionContext) InitializeCollectionACLCache()

func (*TransactionContext) InitializeQueryContext added in v1.2.0

func (t *TransactionContext) InitializeQueryContext(queryID string, iter commonledger.ResultsIterator)

type TransactionContexts added in v1.2.0

type TransactionContexts struct {
	// contains filtered or unexported fields
}

TransactionContexts maintains active transaction contexts for a Handler.

func NewTransactionContexts added in v1.2.0

func NewTransactionContexts() *TransactionContexts

NewTransactionContexts creates a registry for active transaction contexts.

func (*TransactionContexts) Close added in v1.2.0

func (c *TransactionContexts) Close()

Close closes all query iterators assocated with the context.

func (*TransactionContexts) Create added in v1.2.0

Create creates a new TransactionContext for the specified channel and transaction ID. An error is returned when a transaction context has already been created for the specified channel and transaction ID.

func (*TransactionContexts) Delete added in v1.2.0

func (c *TransactionContexts) Delete(channelID, txID string)

Delete removes the transaction context associated with the specified channel and transaction ID.

func (*TransactionContexts) Get added in v1.2.0

func (c *TransactionContexts) Get(channelID, txID string) *TransactionContext

Get retrieves the transaction context associated with the channel and transaction ID.

type TransactionRegistry added in v1.2.0

type TransactionRegistry interface {
	Add(channelID, txID string) bool
	Remove(channelID, txID string)
}

TransactionRegistry tracks active transactions for each channel.

type TxQueryExecutorGetter

type TxQueryExecutorGetter struct {
	HandlerRegistry *HandlerRegistry
	CCID            string
}

func (*TxQueryExecutorGetter) TxQueryExecutor

func (g *TxQueryExecutorGetter) TxQueryExecutor(chainID, txID string) ledger.SimpleQueryExecutor

type UUIDGenerator added in v1.2.0

type UUIDGenerator interface {
	New() string
}

UUIDGenerator is responsible for creating unique query identifiers.

type UUIDGeneratorFunc added in v1.2.0

type UUIDGeneratorFunc func() string

func (UUIDGeneratorFunc) New added in v1.2.0

func (u UUIDGeneratorFunc) New() string

Directories

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