backend

package
v0.20.2 Latest Latest
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 Go to latest Published: Aug 4, 2021 License: AGPL-3.0 Imports: 24 Imported by: 4

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Index

Constants

View Source 
const DefaultMaxHeightRange = 250

DefaultMaxHeightRange is the default maximum size of range requests.

Variables

This section is empty.

Functions

func WithClientUnaryInterceptor added in v0.14.6 

func WithClientUnaryInterceptor(timeout time.Duration) grpc.DialOption

Types

type Backend 

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

Backends implements the Access API.

It is composed of several sub-backends that implement part of the Access API.

Script related calls are handled by backendScripts. Transaction related calls are handled by backendTransactions. Block Header related calls are handled by backendBlockHeaders. Block details related calls are handled by backendBlockDetails. Event related calls are handled by backendEvents. Account related calls are handled by backendAccounts.

All remaining calls are handled by the base Backend in this file.

func New 

func New(
	state protocol.State,
	collectionRPC accessproto.AccessAPIClient,
	historicalAccessNodes []accessproto.AccessAPIClient,
	blocks storage.Blocks,
	headers storage.Headers,
	collections storage.Collections,
	transactions storage.Transactions,
	executionReceipts storage.ExecutionReceipts,
	chainID flow.ChainID,
	transactionMetrics module.TransactionMetrics,
	connFactory ConnectionFactory,
	retryEnabled bool,
	maxHeightRange uint,
	preferredExecutionNodeIDs []string,
	fixedExecutionNodeIDs []string,
	log zerolog.Logger,
) *Backend

func (*Backend) ExecuteScriptAtBlockHeight 

func (b *Backend) ExecuteScriptAtBlockHeight(
	ctx context.Context,
	blockHeight uint64,
	script []byte,
	arguments [][]byte,
) ([]byte, error)

func (*Backend) ExecuteScriptAtBlockID 

func (b *Backend) ExecuteScriptAtBlockID(
	ctx context.Context,
	blockID flow.Identifier,
	script []byte,
	arguments [][]byte,
) ([]byte, error)

func (*Backend) ExecuteScriptAtLatestBlock 

func (b *Backend) ExecuteScriptAtLatestBlock(
	ctx context.Context,
	script []byte,
	arguments [][]byte,
) ([]byte, error)

func (*Backend) GetAccount 

func (b *Backend) GetAccount(ctx context.Context, address flow.Address) (*flow.Account, error)

func (*Backend) GetAccountAtBlockHeight 

func (b *Backend) GetAccountAtBlockHeight(
	ctx context.Context,
	address flow.Address,
	height uint64,
) (*flow.Account, error)

func (*Backend) GetAccountAtLatestBlock 

func (b *Backend) GetAccountAtLatestBlock(ctx context.Context, address flow.Address) (*flow.Account, error)

func (*Backend) GetBlockByHeight 

func (b *Backend) GetBlockByHeight(_ context.Context, height uint64) (*flow.Block, error)

func (*Backend) GetBlockByID 

func (b *Backend) GetBlockByID(_ context.Context, id flow.Identifier) (*flow.Block, error)

func (*Backend) GetBlockHeaderByHeight 

func (b *Backend) GetBlockHeaderByHeight(_ context.Context, height uint64) (*flow.Header, error)

func (*Backend) GetBlockHeaderByID 

func (b *Backend) GetBlockHeaderByID(_ context.Context, id flow.Identifier) (*flow.Header, error)

func (*Backend) GetCollectionByID 

func (b *Backend) GetCollectionByID(_ context.Context, colID flow.Identifier) (*flow.LightCollection, error)

func (*Backend) GetEventsForBlockIDs 

func (b *Backend) GetEventsForBlockIDs(
	ctx context.Context,
	eventType string,
	blockIDs []flow.Identifier,
) ([]flow.BlockEvents, error)

GetEventsForBlockIDs retrieves events for all the specified block IDs that have the given type

func (*Backend) GetEventsForHeightRange 

func (b *Backend) GetEventsForHeightRange(
	ctx context.Context,
	eventType string,
	startHeight, endHeight uint64,
) ([]flow.BlockEvents, error)

GetEventsForHeightRange retrieves events for all sealed blocks between the start block height and the end block height (inclusive) that have the given type.

func (*Backend) GetLatestBlock 

func (b *Backend) GetLatestBlock(_ context.Context, isSealed bool) (*flow.Block, error)

func (*Backend) GetLatestBlockHeader 

func (b *Backend) GetLatestBlockHeader(_ context.Context, isSealed bool) (*flow.Header, error)

func (*Backend) GetLatestProtocolStateSnapshot added in v0.15.0 

func (b *Backend) GetLatestProtocolStateSnapshot(_ context.Context) ([]byte, error)

func (*Backend) GetNetworkParameters 

func (b *Backend) GetNetworkParameters(_ context.Context) access.NetworkParameters

func (*Backend) GetTransaction 

func (b *Backend) GetTransaction(ctx context.Context, txID flow.Identifier) (*flow.TransactionBody, error)

func (*Backend) GetTransactionResult 

func (b *Backend) GetTransactionResult(
	ctx context.Context,
	txID flow.Identifier,
) (*access.TransactionResult, error)

func (*Backend) NotifyFinalizedBlockHeight 

func (b *Backend) NotifyFinalizedBlockHeight(height uint64)

func (*Backend) Ping 

func (b *Backend) Ping(ctx context.Context) error

Ping responds to requests when the server is up.

func (*Backend) SendRawTransaction 

func (b *Backend) SendRawTransaction(
	ctx context.Context,
	tx *flow.TransactionBody,
) error

SendRawTransaction sends a raw transaction to the collection node

func (*Backend) SendTransaction 

func (b *Backend) SendTransaction(
	ctx context.Context,
	tx *flow.TransactionBody,
) error

SendTransaction forwards the transaction to the collection node

type ConnectionFactory 

type ConnectionFactory interface {
	GetAccessAPIClient(address string) (access.AccessAPIClient, io.Closer, error)
	GetExecutionAPIClient(address string) (execution.ExecutionAPIClient, io.Closer, error)
}

ConnectionFactory is used to create an access api client

type ConnectionFactoryImpl 

type ConnectionFactoryImpl struct {
	CollectionGRPCPort        uint
	ExecutionGRPCPort         uint
	CollectionNodeGRPCTimeout time.Duration
	ExecutionNodeGRPCTimeout  time.Duration
}

func (*ConnectionFactoryImpl) GetAccessAPIClient 

func (cf *ConnectionFactoryImpl) GetAccessAPIClient(address string) (access.AccessAPIClient, io.Closer, error)

func (*ConnectionFactoryImpl) GetExecutionAPIClient added in v0.14.0 

func (cf *ConnectionFactoryImpl) GetExecutionAPIClient(address string) (execution.ExecutionAPIClient, io.Closer, error)

type InsufficientExecutionReceipts added in v0.17.0 

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

InsufficientExecutionReceipts indicates that no execution receipt were found for a given block ID

func (InsufficientExecutionReceipts) Error added in v0.17.0 

func (e InsufficientExecutionReceipts) Error() string

type Retry 

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

Retry implements a simple retry mechanism for transaction submission.

func (*Retry) Activate 

func (r *Retry) Activate() *Retry

func (*Retry) IsActive 

func (r *Retry) IsActive() bool

func (*Retry) Notify 

func (b *Retry) Notify(signal interface{}) bool

func (*Retry) RegisterTransaction 

func (r *Retry) RegisterTransaction(height uint64, tx *flow.TransactionBody)

RegisterTransaction adds a transaction that could possibly be retried

func (*Retry) Retry 

func (r *Retry) Retry(height uint64)

func (*Retry) SetBackend 

func (r *Retry) SetBackend(b *Backend) *Retry

Source Files

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