access

package
v0.35.10-crescendo-pre... Latest Latest
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 Go to latest Published: May 29, 2024 License: AGPL-3.0 Imports: 20 Imported by: 14

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Index

Constants

This section is empty.

Variables

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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

func TransactionResultsToMessage added in v0.24.11 

func TransactionResultsToMessage(results []*TransactionResult) *access.TransactionResultsResponse

func WithBlockSignerDecoder added in v0.26.17 

func WithBlockSignerDecoder(signerIndicesDecoder hotstuff.BlockSignerDecoder) func(*Handler)

WithBlockSignerDecoder configures the Handler to decode signer indices via the provided hotstuff.BlockSignerDecoder

Types

type API 

type API interface {
	Ping(ctx context.Context) error
	GetNetworkParameters(ctx context.Context) NetworkParameters
	GetNodeVersionInfo(ctx context.Context) (*NodeVersionInfo, error)

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

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

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

	SendTransaction(ctx context.Context, tx *flow.TransactionBody) error
	GetTransaction(ctx context.Context, id flow.Identifier) (*flow.TransactionBody, error)
	GetTransactionsByBlockID(ctx context.Context, blockID flow.Identifier) ([]*flow.TransactionBody, error)
	GetTransactionResult(ctx context.Context, id flow.Identifier, blockID flow.Identifier, collectionID flow.Identifier, requiredEventEncodingVersion entities.EventEncodingVersion) (*TransactionResult, error)
	GetTransactionResultByIndex(ctx context.Context, blockID flow.Identifier, index uint32, requiredEventEncodingVersion entities.EventEncodingVersion) (*TransactionResult, error)
	GetTransactionResultsByBlockID(ctx context.Context, blockID flow.Identifier, requiredEventEncodingVersion entities.EventEncodingVersion) ([]*TransactionResult, error)
	GetSystemTransaction(ctx context.Context, blockID flow.Identifier) (*flow.TransactionBody, error)
	GetSystemTransactionResult(ctx context.Context, blockID flow.Identifier, requiredEventEncodingVersion entities.EventEncodingVersion) (*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, requiredEventEncodingVersion entities.EventEncodingVersion) ([]flow.BlockEvents, error)
	GetEventsForBlockIDs(ctx context.Context, eventType string, blockIDs []flow.Identifier, requiredEventEncodingVersion entities.EventEncodingVersion) ([]flow.BlockEvents, error)

	GetLatestProtocolStateSnapshot(ctx context.Context) ([]byte, error)
	GetProtocolStateSnapshotByBlockID(ctx context.Context, blockID flow.Identifier) ([]byte, error)
	GetProtocolStateSnapshotByHeight(ctx context.Context, blockHeight uint64) ([]byte, error)

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

	// SubscribeBlocksFromStartBlockID subscribes to the finalized or sealed blocks starting at the requested
	// start block id, up until the latest available block. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block as it becomes available.
	//
	// Each block is filtered by the provided block status, and only
	// those blocks that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - startBlockID: The identifier of the starting block.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlocksFromStartBlockID will return a failed subscription.
	SubscribeBlocksFromStartBlockID(ctx context.Context, startBlockID flow.Identifier, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeBlocksFromStartHeight subscribes to the finalized or sealed blocks starting at the requested
	// start block height, up until the latest available block. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block as it becomes available.
	//
	// Each block is filtered by the provided block status, and only
	// those blocks that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - startHeight: The height of the starting block.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlocksFromStartHeight will return a failed subscription.
	SubscribeBlocksFromStartHeight(ctx context.Context, startHeight uint64, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeBlocksFromLatest subscribes to the finalized or sealed blocks starting at the latest sealed block,
	// up until the latest available block. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block as it becomes available.
	//
	// Each block is filtered by the provided block status, and only
	// those blocks that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlocksFromLatest will return a failed subscription.
	SubscribeBlocksFromLatest(ctx context.Context, blockStatus flow.BlockStatus) subscription.Subscription

	// SubscribeBlockHeadersFromStartBlockID streams finalized or sealed block headers starting at the requested
	// start block id, up until the latest available block header. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block header as it becomes available.
	//
	// Each block header are filtered by the provided block status, and only
	// those block headers that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - startBlockID: The identifier of the starting block.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlockHeadersFromStartBlockID will return a failed subscription.
	SubscribeBlockHeadersFromStartBlockID(ctx context.Context, startBlockID flow.Identifier, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeBlockHeadersFromStartHeight streams finalized or sealed block headers starting at the requested
	// start block height, up until the latest available block header. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block header as it becomes available.
	//
	// Each block header are filtered by the provided block status, and only
	// those block headers that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - startHeight: The height of the starting block.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlockHeadersFromStartHeight will return a failed subscription.
	SubscribeBlockHeadersFromStartHeight(ctx context.Context, startHeight uint64, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeBlockHeadersFromLatest streams finalized or sealed block headers starting at the latest sealed block,
	// up until the latest available block header. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block header as it becomes available.
	//
	// Each block header are filtered by the provided block status, and only
	// those block headers that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlockHeadersFromLatest will return a failed subscription.
	SubscribeBlockHeadersFromLatest(ctx context.Context, blockStatus flow.BlockStatus) subscription.Subscription

	// SubscribeBlockDigestsFromStartBlockID streams finalized or sealed lightweight block starting at the requested
	// start block id, up until the latest available block. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block as it becomes available.
	//
	// Each lightweight block are filtered by the provided block status, and only
	// those blocks that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - startBlockID: The identifier of the starting block.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlockDigestsFromStartBlockID will return a failed subscription.
	SubscribeBlockDigestsFromStartBlockID(ctx context.Context, startBlockID flow.Identifier, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeBlockDigestsFromStartHeight streams finalized or sealed lightweight block starting at the requested
	// start block height, up until the latest available block. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block as it becomes available.
	//
	// Each lightweight block are filtered by the provided block status, and only
	// those blocks that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - startHeight: The height of the starting block.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlockDigestsFromStartHeight will return a failed subscription.
	SubscribeBlockDigestsFromStartHeight(ctx context.Context, startHeight uint64, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeBlockDigestsFromLatest streams finalized or sealed lightweight block starting at the latest sealed block,
	// up until the latest available block. Once the latest is
	// reached, the stream will remain open and responses are sent for each new
	// block as it becomes available.
	//
	// Each lightweight block are filtered by the provided block status, and only
	// those blocks that match the status are returned.
	//
	// Parameters:
	// - ctx: Context for the operation.
	// - blockStatus: The status of the block, which could be only BlockStatusSealed or BlockStatusFinalized.
	//
	// If invalid parameters will be supplied SubscribeBlockDigestsFromLatest will return a failed subscription.
	SubscribeBlockDigestsFromLatest(ctx context.Context, blockStatus flow.BlockStatus) subscription.Subscription
	// SubscribeTransactionStatuses streams transaction statuses starting from the reference block saved in the
	// transaction itself until the block containing the transaction becomes sealed or expired. When the transaction
	// status becomes TransactionStatusSealed or TransactionStatusExpired, the subscription will automatically shut down.
	SubscribeTransactionStatuses(ctx context.Context, tx *flow.TransactionBody, requiredEventEncodingVersion entities.EventEncodingVersion) subscription.Subscription
}

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 {
	subscription.StreamingData
	// contains filtered or unexported fields
}

func NewHandler 

func NewHandler(
	api API,
	chain flow.Chain,
	finalizedHeader module.FinalizedHeaderCache,
	me module.Local,
	maxStreams uint32,
	options ...HandlerOption,
) *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)

GetBlockByID 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) GetExecutionResultByID added in v0.32.0 

func (h *Handler) GetExecutionResultByID(ctx context.Context, req *access.GetExecutionResultByIDRequest) (*access.ExecutionResultByIDResponse, error)

GetExecutionResultByID returns the execution result for the given ID.

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) GetFullCollectionByID added in v0.33.26 

func (h *Handler) GetFullCollectionByID(
	ctx context.Context,
	req *access.GetFullCollectionByIDRequest,
) (*access.FullCollectionResponse, error)

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) GetNodeVersionInfo added in v0.31.0 

func (h *Handler) GetNodeVersionInfo(
	ctx context.Context,
	_ *access.GetNodeVersionInfoRequest,
) (*access.GetNodeVersionInfoResponse, error)

GetNodeVersionInfo gets node version information such as semver, commit, sporkID, protocolVersion, etc

func (*Handler) GetProtocolStateSnapshotByBlockID added in v0.33.1 

func (h *Handler) GetProtocolStateSnapshotByBlockID(ctx context.Context, req *access.GetProtocolStateSnapshotByBlockIDRequest) (*access.ProtocolStateSnapshotResponse, error)

GetProtocolStateSnapshotByBlockID returns serializable Snapshot by blockID

func (*Handler) GetProtocolStateSnapshotByHeight added in v0.33.1 

func (h *Handler) GetProtocolStateSnapshotByHeight(ctx context.Context, req *access.GetProtocolStateSnapshotByHeightRequest) (*access.ProtocolStateSnapshotResponse, error)

GetProtocolStateSnapshotByHeight returns serializable Snapshot by block height

func (*Handler) GetSystemTransaction added in v0.33.1 

func (h *Handler) GetSystemTransaction(
	ctx context.Context,
	req *access.GetSystemTransactionRequest,
) (*access.TransactionResponse, error)

func (*Handler) GetSystemTransactionResult added in v0.33.1 

func (h *Handler) GetSystemTransactionResult(
	ctx context.Context,
	req *access.GetSystemTransactionResultRequest,
) (*access.TransactionResultResponse, 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) GetTransactionResultByIndex added in v0.24.8 

func (h *Handler) GetTransactionResultByIndex(
	ctx context.Context,
	req *access.GetTransactionByIndexRequest,
) (*access.TransactionResultResponse, error)

GetTransactionResultByIndex gets a transaction at a specific index for in a block that is executed, pending or finalized transactions return errors

func (*Handler) GetTransactionResultsByBlockID added in v0.24.11 

func (h *Handler) GetTransactionResultsByBlockID(
	ctx context.Context,
	req *access.GetTransactionsByBlockIDRequest,
) (*access.TransactionResultsResponse, error)

func (*Handler) GetTransactionsByBlockID added in v0.24.11 

func (h *Handler) GetTransactionsByBlockID(
	ctx context.Context,
	req *access.GetTransactionsByBlockIDRequest,
) (*access.TransactionsResponse, error)

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) SendAndSubscribeTransactionStatuses added in v0.33.30 

func (h *Handler) SendAndSubscribeTransactionStatuses(
	request *access.SendAndSubscribeTransactionStatusesRequest,
	stream access.AccessAPI_SendAndSubscribeTransactionStatusesServer,
) error

SendAndSubscribeTransactionStatuses streams transaction statuses starting from the reference block saved in the transaction itself until the block containing the transaction becomes sealed or expired. When the transaction status becomes TransactionStatusSealed or TransactionStatusExpired, the subscription will automatically shut down.

func (*Handler) SendTransaction 

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

SendTransaction submits a transaction to the network.

func (*Handler) SubscribeBlockDigestsFromLatest added in v0.33.30 

func (h *Handler) SubscribeBlockDigestsFromLatest(request *access.SubscribeBlockDigestsFromLatestRequest, stream access.AccessAPI_SubscribeBlockDigestsFromLatestServer) error

SubscribeBlockDigestsFromLatest handles subscription requests for lightweight block started from latest sealed block. It takes a SubscribeBlockDigestsFromLatestRequest and an AccessAPI_SubscribeBlockDigestsFromLatestServer stream as input. The handler manages the subscription to block updates and sends the subscribed block header information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block to message or could not send response.

func (*Handler) SubscribeBlockDigestsFromStartBlockID added in v0.33.30 

func (h *Handler) SubscribeBlockDigestsFromStartBlockID(request *access.SubscribeBlockDigestsFromStartBlockIDRequest, stream access.AccessAPI_SubscribeBlockDigestsFromStartBlockIDServer) error

SubscribeBlockDigestsFromStartBlockID streams finalized or sealed lightweight block starting at the requested block id. It takes a SubscribeBlockDigestsFromStartBlockIDRequest and an AccessAPI_SubscribeBlockDigestsFromStartBlockIDServer stream as input.

Expected errors during normal operation: - codes.InvalidArgument - if invalid startBlockID provided or unknown block status provided, - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block to message or could not send response.

func (*Handler) SubscribeBlockDigestsFromStartHeight added in v0.33.30 

func (h *Handler) SubscribeBlockDigestsFromStartHeight(request *access.SubscribeBlockDigestsFromStartHeightRequest, stream access.AccessAPI_SubscribeBlockDigestsFromStartHeightServer) error

SubscribeBlockDigestsFromStartHeight handles subscription requests for lightweight blocks started from block height. It takes a SubscribeBlockDigestsFromStartHeightRequest and an AccessAPI_SubscribeBlockDigestsFromStartHeightServer stream as input. The handler manages the subscription to block updates and sends the subscribed block information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block to message or could not send response.

func (*Handler) SubscribeBlockHeadersFromLatest added in v0.33.30 

func (h *Handler) SubscribeBlockHeadersFromLatest(request *access.SubscribeBlockHeadersFromLatestRequest, stream access.AccessAPI_SubscribeBlockHeadersFromLatestServer) error

SubscribeBlockHeadersFromLatest handles subscription requests for block headers started from latest sealed block. It takes a SubscribeBlockHeadersFromLatestRequest and an AccessAPI_SubscribeBlockHeadersFromLatestServer stream as input. The handler manages the subscription to block updates and sends the subscribed block header information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block header to message or could not send response.

func (*Handler) SubscribeBlockHeadersFromStartBlockID added in v0.33.30 

func (h *Handler) SubscribeBlockHeadersFromStartBlockID(request *access.SubscribeBlockHeadersFromStartBlockIDRequest, stream access.AccessAPI_SubscribeBlockHeadersFromStartBlockIDServer) error

SubscribeBlockHeadersFromStartBlockID handles subscription requests for block headers started from block id. It takes a SubscribeBlockHeadersFromStartBlockIDRequest and an AccessAPI_SubscribeBlockHeadersFromStartBlockIDServer stream as input. The handler manages the subscription to block updates and sends the subscribed block header information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if invalid startBlockID provided or unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block header to message or could not send response.

func (*Handler) SubscribeBlockHeadersFromStartHeight added in v0.33.30 

func (h *Handler) SubscribeBlockHeadersFromStartHeight(request *access.SubscribeBlockHeadersFromStartHeightRequest, stream access.AccessAPI_SubscribeBlockHeadersFromStartHeightServer) error

SubscribeBlockHeadersFromStartHeight handles subscription requests for block headers started from block height. It takes a SubscribeBlockHeadersFromStartHeightRequest and an AccessAPI_SubscribeBlockHeadersFromStartHeightServer stream as input. The handler manages the subscription to block updates and sends the subscribed block header information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block header to message or could not send response.

func (*Handler) SubscribeBlocksFromLatest added in v0.33.30 

func (h *Handler) SubscribeBlocksFromLatest(request *access.SubscribeBlocksFromLatestRequest, stream access.AccessAPI_SubscribeBlocksFromLatestServer) error

SubscribeBlocksFromLatest handles subscription requests for blocks started from latest sealed block. It takes a SubscribeBlocksFromLatestRequest and an AccessAPI_SubscribeBlocksFromLatestServer stream as input. The handler manages the subscription to block updates and sends the subscribed block information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block to message or could not send response.

func (*Handler) SubscribeBlocksFromStartBlockID added in v0.33.30 

func (h *Handler) SubscribeBlocksFromStartBlockID(request *access.SubscribeBlocksFromStartBlockIDRequest, stream access.AccessAPI_SubscribeBlocksFromStartBlockIDServer) error

SubscribeBlocksFromStartBlockID handles subscription requests for blocks started from block id. It takes a SubscribeBlocksFromStartBlockIDRequest and an AccessAPI_SubscribeBlocksFromStartBlockIDServer stream as input. The handler manages the subscription to block updates and sends the subscribed block information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if invalid startBlockID provided or unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block to message or could not send response.

func (*Handler) SubscribeBlocksFromStartHeight added in v0.33.30 

func (h *Handler) SubscribeBlocksFromStartHeight(request *access.SubscribeBlocksFromStartHeightRequest, stream access.AccessAPI_SubscribeBlocksFromStartHeightServer) error

SubscribeBlocksFromStartHeight handles subscription requests for blocks started from block height. It takes a SubscribeBlocksFromStartHeightRequest and an AccessAPI_SubscribeBlocksFromStartHeightServer stream as input. The handler manages the subscription to block updates and sends the subscribed block information to the client via the provided stream.

Expected errors during normal operation: - codes.InvalidArgument - if unknown block status provided. - codes.ResourceExhausted - if the maximum number of streams is reached. - codes.Internal - if stream encountered an error, if stream got unexpected response or could not convert block to message or could not send response.

type HandlerOption added in v0.26.17 

type HandlerOption func(*Handler)

HandlerOption is used to hand over optional constructor parameters

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 InvalidTxRateLimitedError added in v0.33.30 

type InvalidTxRateLimitedError struct {
	Payer flow.Address
}

func (InvalidTxRateLimitedError) Error added in v0.33.30 

func (e InvalidTxRateLimitedError) Error() string

type NetworkParameters 

type NetworkParameters struct {
	ChainID flow.ChainID
}

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

type NodeVersionInfo added in v0.31.0 

type NodeVersionInfo struct {
	Semver               string
	Commit               string
	SporkId              flow.Identifier
	ProtocolVersion      uint64
	SporkRootBlockHeight uint64
	NodeRootBlockHeight  uint64
}

NodeVersionInfo contains information about node, such as semver, commit, sporkID, protocolVersion, etc

type NoopLimiter added in v0.33.30 

type NoopLimiter struct{}

func NewNoopLimiter added in v0.33.30 

func NewNoopLimiter() *NoopLimiter

func (*NoopLimiter) IsRateLimited added in v0.33.30 

func (l *NoopLimiter) IsRateLimited(address flow.Address) bool

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 RateLimiter added in v0.33.30 

type RateLimiter interface {
	// IsRateLimited returns true if the address is rate limited
	IsRateLimited(address flow.Address) bool
}

RateLimiter is an interface for checking if an address is rate limited. By convention, the address used is the payer field of a transaction. This rate limiter is applied when a transaction is first received by a node, meaning that if a transaction is rate-limited it will be dropped.

type TransactionResult 

type TransactionResult struct {
	Status        flow.TransactionStatus
	StatusCode    uint
	Events        []flow.Event
	ErrorMessage  string
	BlockID       flow.Identifier
	TransactionID flow.Identifier
	CollectionID  flow.Identifier
	BlockHeight   uint64
}

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
	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 NewTransactionValidatorWithLimiter added in v0.33.30 

func NewTransactionValidatorWithLimiter(
	blocks Blocks,
	chain flow.Chain,
	options TransactionValidationOptions,
	rateLimiter RateLimiter,
) *TransactionValidator

func (*TransactionValidator) Validate 

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

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