chaincode

package
v2.0.0-alpha+incompatible Latest Latest
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 Go to latest Published: Apr 9, 2019 License: Apache-2.0 Imports: 33 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Mutual TLS auth client key and cert paths in the chaincode container
	TLSClientKeyPath      string = "/etc/hyperledger/fabric/client.key"
	TLSClientCertPath     string = "/etc/hyperledger/fabric/client.crt"
	TLSClientRootCertPath string = "/etc/hyperledger/fabric/peer.crt"
)
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 

func NewTxKey(channelID, txID string) string

func ParseName 

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 

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

An ACLProvider performs access control checks when invoking chaincode.

type ActiveTransactions 

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

func NewActiveTransactions 

func NewActiveTransactions() *ActiveTransactions

func (*ActiveTransactions) Add 

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

func (*ActiveTransactions) Remove 

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

type ApplicationConfigRetriever 

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 CCProviderImpl 

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

ccProviderImpl is an implementation of the ccprovider.ChaincodeProvider interface

func NewProvider 

func NewProvider(cs *ChaincodeSupport) *CCProviderImpl

func (*CCProviderImpl) ExecuteLegacyInit 

func (c *CCProviderImpl) ExecuteLegacyInit(txParams *ccprovider.TransactionParams, cccid *ccprovider.CCContext, spec *pb.ChaincodeDeploymentSpec) (*pb.Response, *pb.ChaincodeEvent, error)

ExecuteLegacyInit executes a chaincode which is not in the LSCC table

func (*CCProviderImpl) Stop 

func (c *CCProviderImpl) Stop(ccci *ccprovider.ChaincodeContainerInfo) error

Stop stops the chaincode given context and spec

type CertGenerator 

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 ChaincodeDefinitionGetter 

type ChaincodeDefinitionGetter interface {
	ChaincodeDefinition(channelID, chaincodeName string, txSim ledger.SimpleQueryExecutor) (ccprovider.ChaincodeDefinition, error)
}

ChaincodeDefinitionGetter is responsible for retrieving a chaincode definition from the system. The definition is used by the InstantiationPolicyChecker.

type ChaincodeSupport 

type ChaincodeSupport struct {
	Keepalive              time.Duration
	ExecuteTimeout         time.Duration
	UserRunsCC             bool
	Runtime                Runtime
	ACLProvider            ACLProvider
	HandlerRegistry        *HandlerRegistry
	Launcher               Launcher
	SystemCCProvider       sysccprovider.SystemChaincodeProvider
	Lifecycle              Lifecycle
	AppConfig              ApplicationConfigRetriever
	HandlerMetrics         *HandlerMetrics
	LaunchMetrics          *LaunchMetrics
	DeployedCCInfoProvider ledger.DeployedChaincodeInfoProvider
}

ChaincodeSupport responsible for providing interfacing with chaincodes from the Peer.

func NewChaincodeSupport 

func NewChaincodeSupport(
	config *Config,
	peerAddress string,
	userRunsCC bool,
	caCert []byte,
	certGenerator CertGenerator,
	packageProvider PackageProvider,
	lifecycle Lifecycle,
	aclProvider ACLProvider,
	processor Processor,
	SystemCCProvider sysccprovider.SystemChaincodeProvider,
	platformRegistry *platforms.Registry,
	appConfig ApplicationConfigRetriever,
	metricsProvider metrics.Provider,
	deployedCCInfoProvider ledger.DeployedChaincodeInfoProvider,
) *ChaincodeSupport

NewChaincodeSupport creates a new ChaincodeSupport instance.

func (*ChaincodeSupport) CheckInit 

func (cs *ChaincodeSupport) CheckInit(txParams *ccprovider.TransactionParams, cccid *ccprovider.CCContext, input *pb.ChaincodeInput) (bool, error)

func (*ChaincodeSupport) Execute 

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

Execute invokes chaincode and returns the original response.

func (*ChaincodeSupport) ExecuteLegacyInit 

func (cs *ChaincodeSupport) ExecuteLegacyInit(txParams *ccprovider.TransactionParams, cccid *ccprovider.CCContext, spec *pb.ChaincodeDeploymentSpec) (*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 

func (cs *ChaincodeSupport) Invoke(txParams *ccprovider.TransactionParams, cccid *ccprovider.CCContext, 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(chainID string, ccci *ccprovider.ChaincodeContainerInfo) (*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) LaunchInit 

func (cs *ChaincodeSupport) LaunchInit(ccci *ccprovider.ChaincodeContainerInfo) error

LaunchInit bypasses getting the chaincode spec from the LSCC table as in the case of v1.0-v1.2 lifecycle, the chaincode will not yet be defined in the LSCC table

func (*ChaincodeSupport) Register 

func (cs *ChaincodeSupport) Register(stream pb.ChaincodeSupport_RegisterServer) error

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

func (*ChaincodeSupport) Stop 

func (cs *ChaincodeSupport) Stop(ccci *ccprovider.ChaincodeContainerInfo) error

Stop stops a chaincode if running.

type CheckInstantiationPolicyFunc 

type CheckInstantiationPolicyFunc func(name, version string, cd *ccprovider.ChaincodeData) error

Adapter from function to InstantiationPolicyChecker interface.

func (CheckInstantiationPolicyFunc) CheckInstantiationPolicy 

func (c CheckInstantiationPolicyFunc) CheckInstantiationPolicy(name, version string, cd *ccprovider.ChaincodeData) error

type CollectionACLCache 

type CollectionACLCache map[string]*readWritePermission

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

type Config 

type Config struct {
	TLSEnabled     bool
	Keepalive      time.Duration
	ExecuteTimeout time.Duration
	StartupTimeout time.Duration
	LogFormat      string
	LogLevel       string
	ShimLogLevel   string
}

func GlobalConfig 

func GlobalConfig() *Config

type ContainerRuntime 

type ContainerRuntime struct {
	CertGenerator    CertGenerator
	Processor        Processor
	CACert           []byte
	CommonEnv        []string
	PeerAddress      string
	PlatformRegistry *platforms.Registry
}

ContainerRuntime is responsible for managing containerized chaincode.

func (*ContainerRuntime) LaunchConfig 

func (c *ContainerRuntime) LaunchConfig(packageID string, ccType string) (*LaunchConfig, error)

LaunchConfig creates the LaunchConfig for chaincode running in a container.

func (*ContainerRuntime) Start 

func (c *ContainerRuntime) Start(ccci *ccprovider.ChaincodeContainerInfo, codePackage []byte) error

Start launches chaincode in a runtime environment.

func (*ContainerRuntime) Stop 

func (c *ContainerRuntime) Stop(ccci *ccprovider.ChaincodeContainerInfo) error

Stop terminates chaincode and its container runtime environment.

func (*ContainerRuntime) Wait 

func (c *ContainerRuntime) Wait(ccci *ccprovider.ChaincodeContainerInfo) (int, error)

Wait waits for the container runtime to terminate.

type ContextRegistry 

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
	// SystemCCVersion specifies the current system chaincode version
	SystemCCVersion string
	// DefinitionGetter is used to retrieve the chaincode definition from the
	// Lifecycle System Chaincode.
	DefinitionGetter ChaincodeDefinitionGetter
	// 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
	// SystemCCProvider provides access to system chaincode metadata
	SystemCCProvider SystemCCProvider
	// InstantiationPolicyChecker is used to evaluate the chaincode instantiation policies.
	InstantiationPolicyChecker InstantiationPolicyChecker
	// QueryResponeBuilder 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 

func (h *Handler) Close()

func (*Handler) Execute 

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

func (*Handler) HandleDelState 

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

func (*Handler) HandleGetHistoryForKey 

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

Handles query to ledger history db

func (*Handler) HandleGetPrivateDataHash 

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

func (*Handler) HandleGetQueryResult 

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

Handles query to ledger to execute query state

func (*Handler) HandleGetState 

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

Handles query to ledger to get state

func (*Handler) HandleGetStateByRange 

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

Handles query to ledger to rage query state

func (*Handler) HandleGetStateMetadata 

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

Handles query to ledger to get state metadata

func (*Handler) HandleInvokeChaincode 

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

Handles requests that modify ledger state

func (*Handler) HandlePutState 

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

func (*Handler) HandlePutStateMetadata 

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

func (*Handler) HandleQueryStateClose 

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

Handles the closing of a state iterator

func (*Handler) HandleQueryStateNext 

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

Handles query to ledger for query state next

func (*Handler) HandleRegister 

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

handleRegister is invoked when chaincode tries to register.

func (*Handler) HandleTransaction 

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 

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

func (*Handler) ProcessStream 

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

func (*Handler) State 

func (h *Handler) State() State

type HandlerMetrics 

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

func NewHandlerMetrics 

func NewHandlerMetrics(p metrics.Provider) *HandlerMetrics

type HandlerRegistry 

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

HandlerRegistry maintains chaincode Handler instances.

func NewHandlerRegistry 

func NewHandlerRegistry(allowUnsolicitedRegistration bool) *HandlerRegistry

NewHandlerRegistry constructs a HandlerRegistry.

func (*HandlerRegistry) Deregister 

func (r *HandlerRegistry) Deregister(packageID ccintf.CCID) 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 

func (r *HandlerRegistry) Failed(packageID ccintf.CCID, err error)

Failed indicates that registration of a launched chaincode has failed.

func (*HandlerRegistry) Handler 

func (r *HandlerRegistry) Handler(packageID ccintf.CCID) *Handler

Handler retrieves the handler for a chaincode instance.

func (*HandlerRegistry) Launching 

func (r *HandlerRegistry) Launching(packageID ccintf.CCID) (*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 

func (r *HandlerRegistry) Ready(packageID ccintf.CCID)

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

func (*HandlerRegistry) Register 

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 InstantiationPolicyChecker 

type InstantiationPolicyChecker interface {
	CheckInstantiationPolicy(name, version string, cd *ccprovider.ChaincodeData) error
}

InstantiationPolicyChecker is used to evaluate instantiation policies.

type Invoker 

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

An Invoker invokes chaincode.

type LaunchConfig 

type LaunchConfig struct {
	Args  []string
	Envs  []string
	Files map[string][]byte
}

LaunchConfig holds chaincode launch arguments, environment variables, and files.

func (*LaunchConfig) String 

func (lc *LaunchConfig) String() string

type LaunchMetrics 

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

func NewLaunchMetrics 

func NewLaunchMetrics(p metrics.Provider) *LaunchMetrics

type LaunchRegistry 

type LaunchRegistry interface {
	Launching(packageID ccintf.CCID) (launchState *LaunchState, started bool)
	Deregister(packageID ccintf.CCID) error
}

LaunchRegistry tracks launching chaincode instances.

type LaunchState 

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

func NewLaunchState 

func NewLaunchState() *LaunchState

func (*LaunchState) Done 

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

func (*LaunchState) Err 

func (l *LaunchState) Err() error

func (*LaunchState) Notify 

func (l *LaunchState) Notify(err error)

type Launcher 

type Launcher interface {
	Launch(ccci *ccprovider.ChaincodeContainerInfo) error
}

Launcher is used to launch chaincode runtimes.

type LedgerGetter 

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

LedgerGetter is used to get ledgers for chaincode.

type Lifecycle 

type Lifecycle interface {
	// ChaincodeDefinition returns the details for a chaincode by name
	ChaincodeDefinition(channelID, chaincodeName string, qe ledger.SimpleQueryExecutor) (ccprovider.ChaincodeDefinition, error)

	// ChaincodeContainerInfo returns the package necessary to launch a chaincode
	ChaincodeContainerInfo(channelID, chaincodeName string, qe ledger.SimpleQueryExecutor) (*ccprovider.ChaincodeContainerInfo, 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 PackageProvider 

type PackageProvider interface {
	GetChaincodeCodePackage(ccci *ccprovider.ChaincodeContainerInfo) ([]byte, error)
}

PackageProvider gets chaincode packages from the filesystem.

type PendingQueryResult 

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

func (*PendingQueryResult) Add 

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

func (*PendingQueryResult) Cut 

func (p *PendingQueryResult) Cut() []*pb.QueryResultBytes

func (*PendingQueryResult) Size 

func (p *PendingQueryResult) Size() int

type Processor 

type Processor interface {
	Process(vmtype string, req container.VMCReq) error
}

Processor processes vm and container requests.

type QueryResponseBuilder 

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 

type QueryResponseGenerator struct {
	MaxResultLimit int
}

func (*QueryResponseGenerator) BuildQueryResponse 

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 

type Registry interface {
	Register(*Handler) error
	Ready(ccintf.CCID)
	Failed(ccintf.CCID, error)
	Deregister(ccintf.CCID) error
}

A Registry is responsible for tracking handlers.

type Runtime 

type Runtime interface {
	Start(ccci *ccprovider.ChaincodeContainerInfo, codePackage []byte) error
	Stop(ccci *ccprovider.ChaincodeContainerInfo) error
	Wait(ccci *ccprovider.ChaincodeContainerInfo) (int, error)
}

Runtime is used to manage chaincode runtime instances.

type RuntimeLauncher 

type RuntimeLauncher struct {
	Runtime         Runtime
	Registry        LaunchRegistry
	PackageProvider PackageProvider
	StartupTimeout  time.Duration
	Metrics         *LaunchMetrics
}

RuntimeLauncher is responsible for launching chaincode runtimes.

func (*RuntimeLauncher) Launch 

func (r *RuntimeLauncher) Launch(ccci *ccprovider.ChaincodeContainerInfo) error

type State 

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

func (State) String 

func (s State) String() string

type SystemCCProvider 

type SystemCCProvider interface {
	IsSysCC(name string) bool
	IsSysCCAndNotInvokableCC2CC(name string) bool
}

SystemCCProvider provides system chaincode metadata.

type TransactionContext 

type TransactionContext struct {
	ChainID              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 

func (t *TransactionContext) CleanupQueryContext(queryID string)

func (*TransactionContext) CleanupQueryContextWithBookmark 

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

func (*TransactionContext) CloseQueryIterators 

func (t *TransactionContext) CloseQueryIterators()

func (*TransactionContext) GetPendingQueryResult 

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

func (*TransactionContext) GetQueryIterator 

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

func (*TransactionContext) GetTotalReturnCount 

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

func (*TransactionContext) InitializeCollectionACLCache 

func (t *TransactionContext) InitializeCollectionACLCache()

func (*TransactionContext) InitializeQueryContext 

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

type TransactionContexts 

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

TransactionContexts maintains active transaction contexts for a Handler.

func NewTransactionContexts 

func NewTransactionContexts() *TransactionContexts

NewTransactionContexts creates a registry for active transaction contexts.

func (*TransactionContexts) Close 

func (c *TransactionContexts) Close()

Close closes all query iterators assocated with the context.

func (*TransactionContexts) Create 

func (c *TransactionContexts) Create(txParams *ccprovider.TransactionParams) (*TransactionContext, error)

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

func (*TransactionContexts) Delete 

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

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

func (*TransactionContexts) Get 

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

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

type TransactionRegistry 

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

TransactionRegistry tracks active transactions for each channel.

type UUIDGenerator 

type UUIDGenerator interface {
	New() string
}

UUIDGenerator is responsible for creating unique query identifiers.

type UUIDGeneratorFunc 

type UUIDGeneratorFunc func() string

func (UUIDGeneratorFunc) New 

func (u UUIDGeneratorFunc) New() string

Source Files

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Path Synopsis
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