grpc

package
v0.29.0-stable-cadence-4 Latest Latest
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 Go to latest Published: Nov 10, 2022 License: Apache-2.0 Imports: 14 Imported by: 78

Documentation

Overview

Package grpc client provides a Go client for the Flow Access gRPC API.

The Access API provides a set of methods that can be used to submit transactions and read state from Flow. This client is compatible with the Access API implemented by the Access Node role, as well as the mock Access API exposed by the Flow Emulator.

The full Access API specification is here: https://docs.onflow.org/access-api/

Index

Constants

View Source 
const CanarynetHost = "access.canary.nodes.onflow.org:9000"
View Source 
const EmulatorHost = "127.0.0.1:3569"
View Source 
const MainnetHost = "access.mainnet.nodes.onflow.org:9000"
View Source 
const TestnetHost = "access.devnet.nodes.onflow.org:9000"

Variables

This section is empty.

Functions

This section is empty.

Types

type BaseClient 

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

BaseClient is a gRPC client for the Flow Access API exposing all grpc specific methods.

Use this client if you need advance access to the HTTP API. If you don't require special methods use the Client instead.

func NewBaseClient 

func NewBaseClient(url string, opts ...grpc.DialOption) (*BaseClient, error)

NewBaseClient creates a new gRPC handler for network communication.

func NewFromRPCClient 

func NewFromRPCClient(rpcClient RPCClient) *BaseClient

NewFromRPCClient initializes a Flow client using a pre-configured gRPC provider.

func (*BaseClient) Close 

func (c *BaseClient) Close() error

Close closes the client connection.

func (*BaseClient) ExecuteScriptAtBlockHeight 

func (c *BaseClient) ExecuteScriptAtBlockHeight(
	ctx context.Context,
	height uint64,
	script []byte,
	arguments []cadence.Value,
	opts ...grpc.CallOption,
) (cadence.Value, error)

func (*BaseClient) ExecuteScriptAtBlockID 

func (c *BaseClient) ExecuteScriptAtBlockID(
	ctx context.Context,
	blockID flow.Identifier,
	script []byte,
	arguments []cadence.Value,
	opts ...grpc.CallOption,
) (cadence.Value, error)

func (*BaseClient) ExecuteScriptAtLatestBlock 

func (c *BaseClient) ExecuteScriptAtLatestBlock(
	ctx context.Context,
	script []byte,
	arguments []cadence.Value,
	opts ...grpc.CallOption,
) (cadence.Value, error)

func (*BaseClient) GetAccount 

func (c *BaseClient) GetAccount(ctx context.Context, address flow.Address, opts ...grpc.CallOption) (*flow.Account, error)

func (*BaseClient) GetAccountAtBlockHeight 

func (c *BaseClient) GetAccountAtBlockHeight(
	ctx context.Context,
	address flow.Address,
	blockHeight uint64,
	opts ...grpc.CallOption,
) (*flow.Account, error)

func (*BaseClient) GetAccountAtLatestBlock 

func (c *BaseClient) GetAccountAtLatestBlock(
	ctx context.Context,
	address flow.Address,
	opts ...grpc.CallOption,
) (*flow.Account, error)

func (*BaseClient) GetBlockByHeight 

func (c *BaseClient) GetBlockByHeight(
	ctx context.Context,
	height uint64,
	opts ...grpc.CallOption,
) (*flow.Block, error)

func (*BaseClient) GetBlockByID 

func (c *BaseClient) GetBlockByID(
	ctx context.Context,
	blockID flow.Identifier,
	opts ...grpc.CallOption,
) (*flow.Block, error)

func (*BaseClient) GetBlockHeaderByHeight 

func (c *BaseClient) GetBlockHeaderByHeight(
	ctx context.Context,
	height uint64,
	opts ...grpc.CallOption,
) (*flow.BlockHeader, error)

func (*BaseClient) GetBlockHeaderByID 

func (c *BaseClient) GetBlockHeaderByID(
	ctx context.Context,
	blockID flow.Identifier,
	opts ...grpc.CallOption,
) (*flow.BlockHeader, error)

func (*BaseClient) GetCollection 

func (c *BaseClient) GetCollection(
	ctx context.Context,
	colID flow.Identifier,
	opts ...grpc.CallOption,
) (*flow.Collection, error)

func (*BaseClient) GetEventsForBlockIDs 

func (c *BaseClient) GetEventsForBlockIDs(
	ctx context.Context,
	eventType string,
	blockIDs []flow.Identifier,
	opts ...grpc.CallOption,
) ([]flow.BlockEvents, error)

func (*BaseClient) GetEventsForHeightRange 

func (c *BaseClient) GetEventsForHeightRange(
	ctx context.Context,
	query EventRangeQuery,
	opts ...grpc.CallOption,
) ([]flow.BlockEvents, error)

func (*BaseClient) GetExecutionResultForBlockID 

func (c *BaseClient) GetExecutionResultForBlockID(ctx context.Context, blockID flow.Identifier, opts ...grpc.CallOption) (*flow.ExecutionResult, error)

func (*BaseClient) GetLatestBlock 

func (c *BaseClient) GetLatestBlock(
	ctx context.Context,
	isSealed bool,
	opts ...grpc.CallOption,
) (*flow.Block, error)

func (*BaseClient) GetLatestBlockHeader 

func (c *BaseClient) GetLatestBlockHeader(
	ctx context.Context,
	isSealed bool,
	opts ...grpc.CallOption,
) (*flow.BlockHeader, error)

func (*BaseClient) GetLatestProtocolStateSnapshot 

func (c *BaseClient) GetLatestProtocolStateSnapshot(ctx context.Context, opts ...grpc.CallOption) ([]byte, error)

func (*BaseClient) GetTransaction 

func (c *BaseClient) GetTransaction(
	ctx context.Context,
	txID flow.Identifier,
	opts ...grpc.CallOption,
) (*flow.Transaction, error)

func (*BaseClient) GetTransactionResult 

func (c *BaseClient) GetTransactionResult(
	ctx context.Context,
	txID flow.Identifier,
	opts ...grpc.CallOption,
) (*flow.TransactionResult, error)

func (*BaseClient) Ping 

func (c *BaseClient) Ping(ctx context.Context, opts ...grpc.CallOption) error

func (*BaseClient) SendTransaction 

func (c *BaseClient) SendTransaction(
	ctx context.Context,
	tx flow.Transaction,
	opts ...grpc.CallOption,
) error

func (*BaseClient) SetJSONOptions added in v0.26.3 

func (c *BaseClient) SetJSONOptions(options []json.Option)

type Client 

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

Client implements all common gRPC methods providing a network agnostic API.

func NewClient 

func NewClient(host string, opts ...grpc.DialOption) (*Client, error)

NewClient creates an gRPC client exposing all the common access APIs. Client will use provided host for connection.

func (*Client) Close 

func (c *Client) Close() error

func (*Client) ExecuteScriptAtBlockHeight 

func (c *Client) ExecuteScriptAtBlockHeight(ctx context.Context, height uint64, script []byte, arguments []cadence.Value) (cadence.Value, error)

func (*Client) ExecuteScriptAtBlockID 

func (c *Client) ExecuteScriptAtBlockID(ctx context.Context, blockID flow.Identifier, script []byte, arguments []cadence.Value) (cadence.Value, error)

func (*Client) ExecuteScriptAtLatestBlock 

func (c *Client) ExecuteScriptAtLatestBlock(ctx context.Context, script []byte, arguments []cadence.Value) (cadence.Value, error)

func (*Client) GetAccount 

func (c *Client) GetAccount(ctx context.Context, address flow.Address) (*flow.Account, error)

func (*Client) GetAccountAtBlockHeight 

func (c *Client) GetAccountAtBlockHeight(ctx context.Context, address flow.Address, blockHeight uint64) (*flow.Account, error)

func (*Client) GetAccountAtLatestBlock 

func (c *Client) GetAccountAtLatestBlock(ctx context.Context, address flow.Address) (*flow.Account, error)

func (*Client) GetBlockByHeight 

func (c *Client) GetBlockByHeight(ctx context.Context, height uint64) (*flow.Block, error)

func (*Client) GetBlockByID 

func (c *Client) GetBlockByID(ctx context.Context, blockID flow.Identifier) (*flow.Block, error)

func (*Client) GetBlockHeaderByHeight 

func (c *Client) GetBlockHeaderByHeight(ctx context.Context, height uint64) (*flow.BlockHeader, error)

func (*Client) GetBlockHeaderByID 

func (c *Client) GetBlockHeaderByID(ctx context.Context, blockID flow.Identifier) (*flow.BlockHeader, error)

func (*Client) GetCollection 

func (c *Client) GetCollection(ctx context.Context, colID flow.Identifier) (*flow.Collection, error)

func (*Client) GetEventsForBlockIDs 

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

func (*Client) GetEventsForHeightRange 

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

func (*Client) GetExecutionResultForBlockID 

func (c *Client) GetExecutionResultForBlockID(ctx context.Context, blockID flow.Identifier) (*flow.ExecutionResult, error)

func (*Client) GetLatestBlock 

func (c *Client) GetLatestBlock(ctx context.Context, isSealed bool) (*flow.Block, error)

func (*Client) GetLatestBlockHeader 

func (c *Client) GetLatestBlockHeader(ctx context.Context, isSealed bool) (*flow.BlockHeader, error)

func (*Client) GetLatestProtocolStateSnapshot 

func (c *Client) GetLatestProtocolStateSnapshot(ctx context.Context) ([]byte, error)

func (*Client) GetTransaction 

func (c *Client) GetTransaction(ctx context.Context, txID flow.Identifier) (*flow.Transaction, error)

func (*Client) GetTransactionResult 

func (c *Client) GetTransactionResult(ctx context.Context, txID flow.Identifier) (*flow.TransactionResult, error)

func (*Client) Ping 

func (c *Client) Ping(ctx context.Context) error

func (*Client) SendTransaction 

func (c *Client) SendTransaction(ctx context.Context, tx flow.Transaction) error

type EntityToMessageError 

type EntityToMessageError struct {
	Entity string
	Err    error
}

An EntityToMessageError indicates that an entity could not be converted to a protobuf message.

func (EntityToMessageError) Error 

func (e EntityToMessageError) Error() string

func (EntityToMessageError) Unwrap 

func (e EntityToMessageError) Unwrap() error

type EventRangeQuery 

type EventRangeQuery struct {
	// The event type to search for.
	Type string
	// The block height to begin looking for events (inclusive).
	StartHeight uint64
	// The block height to end looking for events (inclusive).
	EndHeight uint64
}

EventRangeQuery defines a query for Flow events.

type MessageToEntityError 

type MessageToEntityError struct {
	Entity string
	Err    error
}

A MessageToEntityError indicates that a protobuf message could not be converted to an SDK entity.

func (MessageToEntityError) Error 

func (e MessageToEntityError) Error() string

func (MessageToEntityError) Unwrap 

func (e MessageToEntityError) Unwrap() error

type RPCClient 

type RPCClient interface {
	access.AccessAPIClient
}

RPCClient is an RPC client for the Flow Access API.

type RPCError 

type RPCError struct {
	GRPCErr error
}

An RPCError is an error returned by an RPC call to an Access API.

An RPC error can be unwrapped to produce the original gRPC error.

func (RPCError) Error 

func (e RPCError) Error() string

func (RPCError) GRPCStatus 

func (e RPCError) GRPCStatus() *status.Status

GRPCStatus returns the gRPC status for this error.

This function satisfies the interface defined in the status.FromError function.

func (RPCError) Unwrap 

func (e RPCError) Unwrap() error

Source Files

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