etrueclient

package
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 Go to latest Published: Feb 13, 2020 License: GPL-3.0 Imports: 17 Imported by: 0

Documentation

Overview

Package common contains various helper functions.

Package etrueclient provides a client for the Ethereum RPC API.

Index

Constants

View Source 
const (
	// HashLength is the expected length of the hash
	HashLength = 32
	// AddressLength is the expected length of the address
	AddressLength = 20
)

Lengths of hashes and addresses in bytes.

Variables

This section is empty.

Functions

func Bytes2Hex 

func Bytes2Hex(d []byte) string

Bytes2Hex returns the hexadecimal encoding of d.

func CopyBytes 

func CopyBytes(b []byte) (copiedBytes []byte)

CopyBytes returns an exact copy of the provided bytes.

func FromHex 

func FromHex(s string) []byte

FromHex returns the bytes represented by the hexadecimal string s. s may be prefixed with "0x".

func Hex2Bytes 

func Hex2Bytes(str string) []byte

Hex2Bytes returns the bytes represented by the hexadecimal string str.

func Hex2BytesFixed 

func Hex2BytesFixed(str string, flen int) []byte

Hex2BytesFixed returns bytes of a specified fixed length flen.

func IsHexAddress 

func IsHexAddress(s string) bool

IsHexAddress verifies whether a string can represent a valid hex-encoded Ethereum address or not.

func LeftPadBytes 

func LeftPadBytes(slice []byte, l int) []byte

LeftPadBytes zero-pads slice to the left up to length l.

func RightPadBytes 

func RightPadBytes(slice []byte, l int) []byte

RightPadBytes zero-pads slice to the right up to length l.

func ToHex deprecated 

func ToHex(b []byte) string

ToHex returns the hex representation of b, prefixed with '0x'. For empty slices, the return value is "0x0".

Deprecated: use hexutil.Encode instead.

func ToHexArray 

func ToHexArray(b [][]byte) []string

ToHexArray creates a array of hex-string based on []byte

Types

type Address 

type Address [AddressLength]byte

Address represents the 20 byte address of an Ethereum account.

func BigToAddress 

func BigToAddress(b *big.Int) Address

BigToAddress returns Address with byte values of b. If b is larger than len(h), b will be cropped from the left.

func BytesToAddress 

func BytesToAddress(b []byte) Address

BytesToAddress returns Address with value b. If b is larger than len(h), b will be cropped from the left.

func HexToAddress 

func HexToAddress(s string) Address

HexToAddress returns Address with byte values of s. If s is larger than len(h), s will be cropped from the left.

func (Address) Bytes 

func (a Address) Bytes() []byte

Bytes gets the string representation of the underlying address.

func (Address) Format 

func (a Address) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (Address) Hash 

func (a Address) Hash() Hash

Hash converts an address to a hash by left-padding it with zeros.

func (Address) Hex 

func (a Address) Hex() string

Hex returns an EIP55-compliant hex string representation of the address.

func (Address) ImplementsGraphQLType 

func (a Address) ImplementsGraphQLType(name string) bool

ImplementsGraphQLType returns true if Hash implements the specified GraphQL type.

func (Address) MarshalText 

func (a Address) MarshalText() ([]byte, error)

MarshalText returns the hex representation of a.

func (*Address) Scan 

func (a *Address) Scan(src interface{}) error

Scan implements Scanner for database/sql.

func (*Address) SetBytes 

func (a *Address) SetBytes(b []byte)

SetBytes sets the address to the value of b. If b is larger than len(a) it will panic.

func (Address) String 

func (a Address) String() string

String implements fmt.Stringer.

func (*Address) UnmarshalGraphQL 

func (a *Address) UnmarshalGraphQL(input interface{}) error

UnmarshalGraphQL unmarshals the provided GraphQL query data.

func (*Address) UnmarshalJSON 

func (a *Address) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*Address) UnmarshalText 

func (a *Address) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

func (Address) Value 

func (a Address) Value() (driver.Value, error)

Value implements valuer for database/sql.

type Client 

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

Client defines typed wrappers for the Ethereum RPC API.

func Dial 

func Dial(rawurl string) (*Client, error)

Dial connects a client to the given URL.

func DialContext 

func DialContext(ctx context.Context, rawurl string) (*Client, error)

func NewClient 

func NewClient(c *rpc.Client) *Client

NewClient creates a client that uses the given RPC client.

func (*Client) BalanceAt 

func (ec *Client) BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)

BalanceAt returns the wei balance of the given account. The block number can be nil, in which case the balance is taken from the latest known block.

func (*Client) BlockByHash 

func (ec *Client) BlockByHash(ctx context.Context, hash Hash) (*types.Block, error)

BlockByHash returns the given full block.

Note that loading full blocks requires two requests. Use HeaderByHash if you don't need all transactions or uncle headers.

func (*Client) BlockByNumber 

func (ec *Client) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error)

BlockByNumber returns a block from the current canonical chain. If number is nil, the latest known block is returned.

Note that loading full blocks requires two requests. Use HeaderByNumber if you don't need all transactions or uncle headers.

func (*Client) CallContract 

func (ec *Client) CallContract(ctx context.Context, msg truechain.CallMsg, blockNumber *big.Int) ([]byte, error)

CallContract executes a message call transaction, which is directly executed in the VM of the node, but never mined into the blockchain.

blockNumber selects the block height at which the call runs. It can be nil, in which case the code is taken from the latest known block. Note that state from very old blocks might not be available.

func (*Client) ChainID 

func (ec *Client) ChainID(ctx context.Context) (*big.Int, error)

SnailBlockchain Access ChainId retrieves the current chain ID for transaction replay protection.

func (*Client) Close 

func (ec *Client) Close()

func (*Client) CodeAt 

func (ec *Client) CodeAt(ctx context.Context, account Address, blockNumber *big.Int) ([]byte, error)

CodeAt returns the contract code of the given account. The block number can be nil, in which case the code is taken from the latest known block.

func (*Client) Coinbase 

func (ec *Client) Coinbase(ctx context.Context) (string, error)

etrue_coinbase

func (*Client) EstimateGas 

func (ec *Client) EstimateGas(ctx context.Context, msg truechain.CallMsg) (uint64, error)

EstimateGas tries to estimate the gas needed to execute a specific transaction based on the current pending state of the backend blockchain. There is no guarantee that this is the true gas limit requirement as other transactions may be added or removed by miners, but it should provide a basis for setting a reasonable default.

func (*Client) FilterLogs 

func (ec *Client) FilterLogs(ctx context.Context, q truechain.FilterQuery) ([]types.Log, error)

FilterLogs executes a filter query.

func (*Client) FruitByHash 

func (ec *Client) FruitByHash(ctx context.Context, hash Hash, fullSigns bool) (*rpcFruit, error)

FruitByHash returns the given fruit.

Note that loading full blocks requires three requests.

func (*Client) FruitByNumber 

func (ec *Client) FruitByNumber(ctx context.Context, number *big.Int, fullSigns bool) (*rpcFruit, error)

FruitByNumber returns a block from the current canonical chain. If number is nil, the latest known fruit is returned.

Note that loading full blocks requires three requests.

func (*Client) FruitCount 

func (ec *Client) FruitCount(ctx context.Context, blockHash Hash) (uint, error)

FruitCount returns the total number of fruits in the given block.

func (*Client) FruitInBlockByHash 

func (ec *Client) FruitInBlockByHash(ctx context.Context, snailBlockHash Hash, index uint, fullSigns bool) (*rpcFruit, error)

FruitInBlockByHash returns a single fruit at index in the given block.

func (*Client) FruitInBlockByNumber 

func (ec *Client) FruitInBlockByNumber(ctx context.Context, snailBlockNumber *big.Int, index uint, fullSigns bool) (*rpcFruit, error)

FruitInBlockByNumber returns a single fruit at index in the given block.

func (*Client) GetBalanceAtBlockNumber 

func (ec *Client) GetBalanceAtBlockNumber(ctx context.Context, account Address, blockNumber *big.Int) (*big.Int, error)

GetBalanceAtBlockNumber returns the wei balance of the given account. The block number can be nil, in which case the balance is taken from the latest known block.

func (*Client) GetNonceAtBlockNumber 

func (ec *Client) GetNonceAtBlockNumber(ctx context.Context, account Address, blockNumber *big.Int) (uint64, error)

GetNonceAtBlockNumber returns the account nonce of the given account. The block number can be nil, in which case the nonce is taken from the latest known block.

func (*Client) GetProtocolVersion 

func (ec *Client) GetProtocolVersion(ctx context.Context) (string, error)

etrue_protocolVersion

func (*Client) HeaderByHash 

func (ec *Client) HeaderByHash(ctx context.Context, hash Hash) (*types.Header, error)

HeaderByHash returns the block header with the given hash.

func (*Client) HeaderByNumber 

func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error)

HeaderByNumber returns a block header from the current canonical chain. If number is nil, the latest known header is returned.

func (*Client) IsMining 

func (ec *Client) IsMining(ctx context.Context) (bool, error)

etrue_mining

func (*Client) ListAccounts 

func (ec *Client) ListAccounts(ctx context.Context) ([]common.Address, error)

personal_listAccounts

func (*Client) NetworkID 

func (ec *Client) NetworkID(ctx context.Context) (*big.Int, error)

NetworkID returns the network ID (also known as the chain ID) for this chain.

func (*Client) NonceAt 

func (ec *Client) NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error)

NonceAt returns the account nonce of the given account. The block number can be nil, in which case the nonce is taken from the latest known block.

func (*Client) PendingBalanceAt 

func (ec *Client) PendingBalanceAt(ctx context.Context, account Address) (*big.Int, error)

PendingBalanceAt returns the wei balance of the given account in the pending state.

func (*Client) PendingCallContract 

func (ec *Client) PendingCallContract(ctx context.Context, msg truechain.CallMsg) ([]byte, error)

PendingCallContract executes a message call transaction using the EVM. The state seen by the contract call is the pending state.

func (*Client) PendingCodeAt 

func (ec *Client) PendingCodeAt(ctx context.Context, account Address) ([]byte, error)

PendingCodeAt returns the contract code of the given account in the pending state.

func (*Client) PendingFruitCount 

func (ec *Client) PendingFruitCount(ctx context.Context) (uint, error)

PendingFruitCount returns the total number of fruits in the pending state.

func (*Client) PendingNonceAt 

func (ec *Client) PendingNonceAt(ctx context.Context, account Address) (uint64, error)

PendingNonceAt returns the account nonce of the given account in the pending state. This is the nonce that should be used for the next transaction.

func (*Client) PendingStorageAt 

func (ec *Client) PendingStorageAt(ctx context.Context, account Address, key Hash) ([]byte, error)

PendingStorageAt returns the value of key in the contract storage of the given account in the pending state.

func (*Client) PendingTransactionCount 

func (ec *Client) PendingTransactionCount(ctx context.Context) (uint, error)

PendingTransactionCount returns the total number of transactions in the pending state.

func (*Client) SendPayTransaction 

func (ec *Client) SendPayTransaction(ctx context.Context, tx *types.Transaction) error

SendPayTransaction injects a signed transaction(both sender and payer) into the pending pool for execution.

If the transaction was a contract creation use the TransactionReceipt method to get the contract address after the transaction has been mined.

func (*Client) SendTransaction 

func (ec *Client) SendTransaction(ctx context.Context, tx *types.Transaction) error

SendTransaction injects a signed transaction into the pending pool for execution.

If the transaction was a contract creation use the TransactionReceipt method to get the contract address after the transaction has been mined.

func (*Client) SnailBlockByHash 

func (ec *Client) SnailBlockByHash(ctx context.Context, hash Hash) (*rpcSnailBlock, error)

SnailBlockByHash returns the given full block.

Note that loading full blocks requires two requests.

func (*Client) SnailBlockByNumber 

func (ec *Client) SnailBlockByNumber(ctx context.Context, number *big.Int) (*rpcSnailBlock, error)

SnailBlockByNumber returns a block from the current canonical chain. If number is nil, the latest known block is returned.

Note that loading full blocks requires two requests.

func (*Client) SnailHeaderByHash 

func (ec *Client) SnailHeaderByHash(ctx context.Context, hash Hash) (*rpcSnailHeader, error)

SnailHeaderByHash returns the block header with the given hash.

func (*Client) SnailHeaderByNumber 

func (ec *Client) SnailHeaderByNumber(ctx context.Context, number *big.Int) (*rpcSnailHeader, error)

SnailHeaderByNumber returns a block header from the current canonical chain. If number is nil, the latest known header is returned.

func (*Client) StorageAt 

func (ec *Client) StorageAt(ctx context.Context, account Address, key common.Hash, blockNumber *big.Int) ([]byte, error)

StorageAt returns the value of key in the contract storage of the given account. The block number can be nil, in which case the value is taken from the latest known block.

func (*Client) SubscribeFilterLogs 

func (ec *Client) SubscribeFilterLogs(ctx context.Context, q truechain.FilterQuery, ch chan<- types.Log) (truechain.Subscription, error)

SubscribeFilterLogs subscribes to the results of a streaming filter query.

func (*Client) SubscribeNewHead 

func (ec *Client) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (truechain.Subscription, error)

SubscribeNewHead subscribes to notifications about the current blockchain head on the given channel.

func (*Client) SuggestGasPrice 

func (ec *Client) SuggestGasPrice(ctx context.Context) (*big.Int, error)

SuggestGasPrice retrieves the currently suggested gas price to allow a timely execution of a transaction.

func (*Client) SyncProgress 

func (ec *Client) SyncProgress(ctx context.Context) (*truechain.SyncProgress, error)

SyncProgress retrieves the current progress of the sync algorithm. If there's no sync currently running, it returns nil.

func (*Client) TransactionByHash 

func (ec *Client) TransactionByHash(ctx context.Context, hash Hash) (tx *types.Transaction, isPending bool, err error)

TransactionByHash returns the transaction with the given hash.

func (*Client) TransactionCount 

func (ec *Client) TransactionCount(ctx context.Context, blockHash Hash) (uint, error)

TransactionCount returns the total number of transactions in the given block.

func (*Client) TransactionInBlock 

func (ec *Client) TransactionInBlock(ctx context.Context, blockHash Hash, index uint) (*types.Transaction, error)

TransactionInBlock returns a single transaction at index in the given block.

func (*Client) TransactionReceipt 

func (ec *Client) TransactionReceipt(ctx context.Context, txHash Hash) (*types.Receipt, error)

TransactionReceipt returns the receipt of a transaction by transaction hash. Note that the receipt is not available for pending transactions.

func (*Client) TransactionSender 

func (ec *Client) TransactionSender(ctx context.Context, tx *types.Transaction, block Hash, index uint) (common.Address, error)

TransactionSender returns the sender address of the given transaction. The transaction must be known to the remote node and included in the blockchain at the given block and index. The sender is the one derived by the protocol at the time of inclusion.

There is a fast-path for transactions retrieved by TransactionByHash and TransactionInBlock. Getting their sender address can be done without an RPC interaction.

type Hash 

type Hash [HashLength]byte

Hash represents the 32 byte Keccak256 hash of arbitrary data.

func BigToHash 

func BigToHash(b *big.Int) Hash

BigToHash sets byte representation of b to hash. If b is larger than len(h), b will be cropped from the left.

func BytesToHash 

func BytesToHash(b []byte) Hash

BytesToHash sets b to hash. If b is larger than len(h), b will be cropped from the left.

func HexToHash 

func HexToHash(s string) Hash

HexToHash sets byte representation of s to hash. If b is larger than len(h), b will be cropped from the left.

func (Hash) Big 

func (h Hash) Big() *big.Int

Big converts a hash to a big integer.

func (Hash) Bytes 

func (h Hash) Bytes() []byte

Bytes gets the byte representation of the underlying hash.

func (Hash) Format 

func (h Hash) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (Hash) Generate 

func (h Hash) Generate(rand *rand.Rand, size int) reflect.Value

Generate implements testing/quick.Generator.

func (Hash) Hex 

func (h Hash) Hex() string

Hex converts a hash to a hex string.

func (Hash) ImplementsGraphQLType 

func (_ Hash) ImplementsGraphQLType(name string) bool

ImplementsGraphQLType returns true if Hash implements the specified GraphQL type.

func (Hash) MarshalText 

func (h Hash) MarshalText() ([]byte, error)

MarshalText returns the hex representation of h.

func (*Hash) Scan 

func (h *Hash) Scan(src interface{}) error

Scan implements Scanner for database/sql.

func (*Hash) SetBytes 

func (h *Hash) SetBytes(b []byte)

SetBytes sets the hash to the value of b. If b is larger than len(h), b will be cropped from the left.

func (Hash) String 

func (h Hash) String() string

String implements the stringer interface and is used also by the logger when doing full logging into a file.

func (Hash) TerminalString 

func (h Hash) TerminalString() string

TerminalString implements log.TerminalStringer, formatting a string for console output during logging.

func (*Hash) UnmarshalGraphQL 

func (h *Hash) UnmarshalGraphQL(input interface{}) error

UnmarshalGraphQL unmarshals the provided GraphQL query data.

func (*Hash) UnmarshalJSON 

func (h *Hash) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*Hash) UnmarshalText 

func (h *Hash) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

func (Hash) Value 

func (h Hash) Value() (driver.Value, error)

Value implements valuer for database/sql.

type MixedcaseAddress 

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

MixedcaseAddress retains the original string, which may or may not be correctly checksummed

func NewMixedcaseAddress 

func NewMixedcaseAddress(addr Address) MixedcaseAddress

NewMixedcaseAddress constructor (mainly for testing)

func NewMixedcaseAddressFromString 

func NewMixedcaseAddressFromString(hexaddr string) (*MixedcaseAddress, error)

NewMixedcaseAddressFromString is mainly meant for unit-testing

func (*MixedcaseAddress) Address 

func (ma *MixedcaseAddress) Address() Address

Address returns the address

func (*MixedcaseAddress) MarshalJSON 

func (ma *MixedcaseAddress) MarshalJSON() ([]byte, error)

MarshalJSON marshals the original value

func (*MixedcaseAddress) Original 

func (ma *MixedcaseAddress) Original() string

Original returns the mixed-case input string

func (*MixedcaseAddress) String 

func (ma *MixedcaseAddress) String() string

String implements fmt.Stringer

func (*MixedcaseAddress) UnmarshalJSON 

func (ma *MixedcaseAddress) UnmarshalJSON(input []byte) error

UnmarshalJSON parses MixedcaseAddress

func (*MixedcaseAddress) ValidChecksum 

func (ma *MixedcaseAddress) ValidChecksum() bool

ValidChecksum returns true if the address has valid checksum

type UnprefixedAddress 

type UnprefixedAddress Address

UnprefixedAddress allows marshaling an Address without 0x prefix.

func (UnprefixedAddress) MarshalText 

func (a UnprefixedAddress) MarshalText() ([]byte, error)

MarshalText encodes the address as hex.

func (*UnprefixedAddress) UnmarshalText 

func (a *UnprefixedAddress) UnmarshalText(input []byte) error

UnmarshalText decodes the address from hex. The 0x prefix is optional.

type UnprefixedHash 

type UnprefixedHash Hash

UnprefixedHash allows marshaling a Hash without 0x prefix.

func (UnprefixedHash) MarshalText 

func (h UnprefixedHash) MarshalText() ([]byte, error)

MarshalText encodes the hash as hex.

func (*UnprefixedHash) UnmarshalText 

func (h *UnprefixedHash) UnmarshalText(input []byte) error

UnmarshalText decodes the hash from hex. The 0x prefix is optional.

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