access

package
v0.24.1 Latest Latest
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 Go to latest Published: Jan 26, 2022 License: AGPL-3.0 Imports: 15 Imported by: 14

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Index

Constants

This section is empty.

Variables

View Source 
var ErrUnknownReferenceBlock = errors.New("unknown reference block")

ErrUnknownReferenceBlock indicates that a transaction references an unknown block.

Functions

func TransactionResultToMessage 

func TransactionResultToMessage(result *TransactionResult) *access.TransactionResultResponse

Types

type API 

type API interface {
	Ping(ctx context.Context) error
	GetNetworkParameters(ctx context.Context) NetworkParameters

	GetLatestBlockHeader(ctx context.Context, isSealed bool) (*flow.Header, error)
	GetBlockHeaderByHeight(ctx context.Context, height uint64) (*flow.Header, error)
	GetBlockHeaderByID(ctx context.Context, id flow.Identifier) (*flow.Header, error)

	GetLatestBlock(ctx context.Context, isSealed bool) (*flow.Block, error)
	GetBlockByHeight(ctx context.Context, height uint64) (*flow.Block, error)
	GetBlockByID(ctx context.Context, id flow.Identifier) (*flow.Block, error)

	GetCollectionByID(ctx context.Context, id flow.Identifier) (*flow.LightCollection, error)

	SendTransaction(ctx context.Context, tx *flow.TransactionBody) error
	GetTransaction(ctx context.Context, id flow.Identifier) (*flow.TransactionBody, error)
	GetTransactionResult(ctx context.Context, id flow.Identifier) (*TransactionResult, error)

	GetAccount(ctx context.Context, address flow.Address) (*flow.Account, error)
	GetAccountAtLatestBlock(ctx context.Context, address flow.Address) (*flow.Account, error)
	GetAccountAtBlockHeight(ctx context.Context, address flow.Address, height uint64) (*flow.Account, error)

	ExecuteScriptAtLatestBlock(ctx context.Context, script []byte, arguments [][]byte) ([]byte, error)
	ExecuteScriptAtBlockHeight(ctx context.Context, blockHeight uint64, script []byte, arguments [][]byte) ([]byte, error)
	ExecuteScriptAtBlockID(ctx context.Context, blockID flow.Identifier, script []byte, arguments [][]byte) ([]byte, error)

	GetEventsForHeightRange(ctx context.Context, eventType string, startHeight, endHeight uint64) ([]flow.BlockEvents, error)
	GetEventsForBlockIDs(ctx context.Context, eventType string, blockIDs []flow.Identifier) ([]flow.BlockEvents, error)

	GetLatestProtocolStateSnapshot(ctx context.Context) ([]byte, error)

	GetExecutionResultForBlockID(ctx context.Context, blockID flow.Identifier) (*flow.ExecutionResult, error)
	GetExecutionResultByID(ctx context.Context, id flow.Identifier) (*flow.ExecutionResult, error)
}

API provides all public-facing functionality of the Flow Access API.

type Blocks 

type Blocks interface {
	HeaderByID(id flow.Identifier) (*flow.Header, error)
	FinalizedHeader() (*flow.Header, error)
}

type DuplicatedSignatureError added in v0.18.4 

type DuplicatedSignatureError struct {
	Address  flow.Address
	KeyIndex uint64
}

DuplicatedSignatureError indicates that two signatures havs been provided for a key (combination of account and key index)

func (DuplicatedSignatureError) Error added in v0.18.4 

func (e DuplicatedSignatureError) Error() string

type ExpiredTransactionError 

type ExpiredTransactionError struct {
	RefHeight, FinalHeight uint64
}

ExpiredTransactionError indicates that a transaction has expired.

func (ExpiredTransactionError) Error 

func (e ExpiredTransactionError) Error() string

type Handler 

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

func NewHandler 

func NewHandler(api API, chain flow.Chain) *Handler

func (*Handler) ExecuteScriptAtBlockHeight 

func (h *Handler) ExecuteScriptAtBlockHeight(
	ctx context.Context,
	req *access.ExecuteScriptAtBlockHeightRequest,
) (*access.ExecuteScriptResponse, error)

ExecuteScriptAtBlockHeight executes a script at a specific block height.

func (*Handler) ExecuteScriptAtBlockID 

func (h *Handler) ExecuteScriptAtBlockID(
	ctx context.Context,
	req *access.ExecuteScriptAtBlockIDRequest,
) (*access.ExecuteScriptResponse, error)

ExecuteScriptAtBlockID executes a script at a specific block ID.

func (*Handler) ExecuteScriptAtLatestBlock 

func (h *Handler) ExecuteScriptAtLatestBlock(
	ctx context.Context,
	req *access.ExecuteScriptAtLatestBlockRequest,
) (*access.ExecuteScriptResponse, error)

ExecuteScriptAtLatestBlock executes a script at a the latest block.

func (*Handler) GetAccount 

func (h *Handler) GetAccount(
	ctx context.Context,
	req *access.GetAccountRequest,
) (*access.GetAccountResponse, error)

GetAccount returns an account by address at the latest sealed block.

func (*Handler) GetAccountAtBlockHeight 

func (h *Handler) GetAccountAtBlockHeight(
	ctx context.Context,
	req *access.GetAccountAtBlockHeightRequest,
) (*access.AccountResponse, error)

func (*Handler) GetAccountAtLatestBlock 

func (h *Handler) GetAccountAtLatestBlock(
	ctx context.Context,
	req *access.GetAccountAtLatestBlockRequest,
) (*access.AccountResponse, error)

GetAccountAtLatestBlock returns an account by address at the latest sealed block.

func (*Handler) GetBlockByHeight 

func (h *Handler) GetBlockByHeight(
	ctx context.Context,
	req *access.GetBlockByHeightRequest,
) (*access.BlockResponse, error)

GetBlockByHeight gets a block by height.

func (*Handler) GetBlockByID 

func (h *Handler) GetBlockByID(
	ctx context.Context,
	req *access.GetBlockByIDRequest,
) (*access.BlockResponse, error)

GetBlockByHeight gets a block by ID.

func (*Handler) GetBlockHeaderByHeight 

func (h *Handler) GetBlockHeaderByHeight(
	ctx context.Context,
	req *access.GetBlockHeaderByHeightRequest,
) (*access.BlockHeaderResponse, error)

GetBlockHeaderByHeight gets a block header by height.

func (*Handler) GetBlockHeaderByID 

func (h *Handler) GetBlockHeaderByID(
	ctx context.Context,
	req *access.GetBlockHeaderByIDRequest,
) (*access.BlockHeaderResponse, error)

GetBlockHeaderByID gets a block header by ID.

func (*Handler) GetCollectionByID 

func (h *Handler) GetCollectionByID(
	ctx context.Context,
	req *access.GetCollectionByIDRequest,
) (*access.CollectionResponse, error)

GetCollectionByID gets a collection by ID.

func (*Handler) GetEventsForBlockIDs 

func (h *Handler) GetEventsForBlockIDs(
	ctx context.Context,
	req *access.GetEventsForBlockIDsRequest,
) (*access.EventsResponse, error)

GetEventsForBlockIDs returns events matching a set of block IDs.

func (*Handler) GetEventsForHeightRange 

func (h *Handler) GetEventsForHeightRange(
	ctx context.Context,
	req *access.GetEventsForHeightRangeRequest,
) (*access.EventsResponse, error)

GetEventsForHeightRange returns events matching a query.

func (*Handler) GetExecutionResultForBlockID added in v0.21.0 

func (h *Handler) GetExecutionResultForBlockID(ctx context.Context, req *access.GetExecutionResultForBlockIDRequest) (*access.ExecutionResultForBlockIDResponse, error)

GetExecutionResultForBlockID returns the latest received execution result for the given block ID. AN might receive multiple receipts with conflicting results for unsealed blocks. If this case happens, since AN is not able to determine which result is the correct one until the block is sealed, it has to pick one result to respond to this query. For now, we return the result from the latest received receipt.

func (*Handler) GetLatestBlock 

func (h *Handler) GetLatestBlock(
	ctx context.Context,
	req *access.GetLatestBlockRequest,
) (*access.BlockResponse, error)

GetLatestBlock gets the latest sealed block.

func (*Handler) GetLatestBlockHeader 

func (h *Handler) GetLatestBlockHeader(
	ctx context.Context,
	req *access.GetLatestBlockHeaderRequest,
) (*access.BlockHeaderResponse, error)

GetLatestBlockHeader gets the latest sealed block header.

func (*Handler) GetLatestProtocolStateSnapshot added in v0.14.4 

func (h *Handler) GetLatestProtocolStateSnapshot(ctx context.Context, req *access.GetLatestProtocolStateSnapshotRequest) (*access.ProtocolStateSnapshotResponse, error)

GetLatestProtocolStateSnapshot returns the latest serializable Snapshot

func (*Handler) GetNetworkParameters 

func (h *Handler) GetNetworkParameters(
	ctx context.Context,
	_ *access.GetNetworkParametersRequest,
) (*access.GetNetworkParametersResponse, error)

func (*Handler) GetTransaction 

func (h *Handler) GetTransaction(
	ctx context.Context,
	req *access.GetTransactionRequest,
) (*access.TransactionResponse, error)

GetTransaction gets a transaction by ID.

func (*Handler) GetTransactionResult 

func (h *Handler) GetTransactionResult(
	ctx context.Context,
	req *access.GetTransactionRequest,
) (*access.TransactionResultResponse, error)

GetTransactionResult gets a transaction by ID.

func (*Handler) Ping 

func (h *Handler) Ping(ctx context.Context, _ *access.PingRequest) (*access.PingResponse, error)

Ping the Access API server for a response.

func (*Handler) SendTransaction 

func (h *Handler) SendTransaction(
	ctx context.Context,
	req *access.SendTransactionRequest,
) (*access.SendTransactionResponse, error)

SendTransaction submits a transaction to the network.

type IncompleteTransactionError 

type IncompleteTransactionError struct {
	MissingFields []string
}

IncompleteTransactionError indicates that a transaction is missing one or more required fields.

func (IncompleteTransactionError) Error 

func (e IncompleteTransactionError) Error() string

type InvalidAddressError added in v0.11.0 

type InvalidAddressError struct {
	Address flow.Address
}

InvalidAddressError indicates that a transaction references an invalid flow Address in either the Authorizers or Payer field.

func (InvalidAddressError) Error added in v0.11.0 

func (e InvalidAddressError) Error() string

type InvalidGasLimitError 

type InvalidGasLimitError struct {
	Maximum uint64
	Actual  uint64
}

InvalidGasLimitError indicates that a transaction specifies a gas limit that exceeds the maximum.

func (InvalidGasLimitError) Error 

func (e InvalidGasLimitError) Error() string

type InvalidScriptError 

type InvalidScriptError struct {
	ParserErr error
}

InvalidScriptError indicates that a transaction contains an invalid Cadence script.

func (InvalidScriptError) Error 

func (e InvalidScriptError) Error() string

func (InvalidScriptError) Unwrap 

func (e InvalidScriptError) Unwrap() error

type InvalidSignatureError added in v0.12.0 

type InvalidSignatureError struct {
	Signature flow.TransactionSignature
}

InvalidSignatureError indicates that a transaction contains a signature with a wrong format.

func (InvalidSignatureError) Error added in v0.12.0 

func (e InvalidSignatureError) Error() string

type InvalidTxByteSizeError added in v0.11.0 

type InvalidTxByteSizeError struct {
	Maximum uint64
	Actual  uint64
}

InvalidTxByteSizeError indicates that a transaction byte size exceeds the maximum.

func (InvalidTxByteSizeError) Error added in v0.11.0 

func (e InvalidTxByteSizeError) Error() string

type NetworkParameters 

type NetworkParameters struct {
	ChainID flow.ChainID
}

NetworkParameters contains the network-wide parameters for the Flow blockchain.

type ProtocolStateBlocks 

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

func NewProtocolStateBlocks 

func NewProtocolStateBlocks(state protocol.State) *ProtocolStateBlocks

func (*ProtocolStateBlocks) FinalizedHeader 

func (b *ProtocolStateBlocks) FinalizedHeader() (*flow.Header, error)

func (*ProtocolStateBlocks) HeaderByID 

func (b *ProtocolStateBlocks) HeaderByID(id flow.Identifier) (*flow.Header, error)

type TransactionResult 

type TransactionResult struct {
	Status       flow.TransactionStatus
	StatusCode   uint
	Events       []flow.Event
	ErrorMessage string
	BlockID      flow.Identifier
}

TODO: Combine this with flow.TransactionResult?

func MessageToTransactionResult added in v0.12.5 

func MessageToTransactionResult(message *access.TransactionResultResponse) *TransactionResult

type TransactionValidationOptions 

type TransactionValidationOptions struct {
	Expiry                       uint
	ExpiryBuffer                 uint
	AllowEmptyReferenceBlockID   bool
	AllowUnknownReferenceBlockID bool
	MaxGasLimit                  uint64
	CheckScriptsParse            bool
	// MaxAddressIndex is a simple spam prevention measure. It rejects any
	// transactions referencing an address with index newer than the specified
	// maximum. A zero value indicates no address checking.
	MaxAddressIndex        uint64
	MaxTransactionByteSize uint64
	MaxCollectionByteSize  uint64
}

type TransactionValidator 

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

func NewTransactionValidator 

func NewTransactionValidator(
	blocks Blocks,
	chain flow.Chain,
	options TransactionValidationOptions,
) *TransactionValidator

func (*TransactionValidator) Validate 

func (v *TransactionValidator) Validate(tx *flow.TransactionBody) (err error)

Source Files

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Directories

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