geth

package
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 Go to latest Published: Nov 18, 2016 License: GPL-3.0 Imports: 30 Imported by: 0

Documentation

Overview

Package geth contains the simplified mobile APIs to go-ethereum.

The scope of this package is *not* to allow writing a custom Ethereun client with pieces plucked from go-ethereum, rather to allow writing native dapps on mobile platforms. Keep this in mind when using or extending this package!

API limitations

Since gomobile cannot bridge arbitrary types between Go and Android/iOS, the exposed APIs need to be manually wrapped into simplified types, with custom constructors and getters/setters to ensure that they can be meaninfully used from Java/ObjC too.

With this in mind, please try to limit the scope of this package and only add essentials without which mobile support cannot work, especially since manually syncing the code will be unwieldy otherwise. In the long term we might consider writing custom library generators, but those are out of scope now.

Content wise each file in this package corresponds to an entire Go package from the go-ethereum repository. Please adhere to this scoping to prevent this package getting unmaintainable.

Wrapping guidelines:

Every type that is to be exposed should be wrapped into its own plain struct, which internally contains a single field: the original go-ethereum version. This is needed because gomobile cannot expose named types for now.

Whenever a method argument or a return type is a custom struct, the pointer variant should always be used as value types crossing over between language boundaries might have strange behaviors.

Slices of types should be converted into a single multiplicative type wrapping a go slice with the methods `Size`, `Get` and `Set`. Further slice operations should not be provided to limit the remote code complexity. Arrays should be avoided as much as possible since they complicate bounds checking.

Note, a panic *cannot* cross over language boundaries, instead will result in an undebuggable SEGFAULT in the process. For error handling only ever use error returns, which may be the only or the second return.

Index

Constants

View Source 
const (
	// StandardScryptN is the N parameter of Scrypt encryption algorithm, using 256MB
	// memory and taking approximately 1s CPU time on a modern processor.
	StandardScryptN = int(accounts.StandardScryptN)

	// StandardScryptP is the P parameter of Scrypt encryption algorithm, using 256MB
	// memory and taking approximately 1s CPU time on a modern processor.
	StandardScryptP = int(accounts.StandardScryptP)

	// LightScryptN is the N parameter of Scrypt encryption algorithm, using 4MB
	// memory and taking approximately 100ms CPU time on a modern processor.
	LightScryptN = int(accounts.LightScryptN)

	// LightScryptP is the P parameter of Scrypt encryption algorithm, using 4MB
	// memory and taking approximately 100ms CPU time on a modern processor.
	LightScryptP = int(accounts.LightScryptP)
)

Variables

This section is empty.

Functions

func MainnetGenesis 

func MainnetGenesis() string

MainnetGenesis returns the JSON spec to use for the main Ethereum network. It is actually empty since that defaults to the hard coded binary genesis block.

func TestnetGenesis 

func TestnetGenesis() string

TestnetGenesis returns the JSON spec to use for the Ethereum test network.

Types

type Account 

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

Account represents a stored key.

func (*Account) GetAddress 

func (a *Account) GetAddress() *Address

GetAddress retrieves the address associated with the account.

func (*Account) GetFile added in v1.5.0 

func (a *Account) GetFile() string

GetFile retrieves the path of the file containing the account key.

type AccountManager added in v1.5.0 

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

AccountManager manages a key storage directory on disk.

func NewAccountManager added in v1.5.0 

func NewAccountManager(keydir string, scryptN, scryptP int) *AccountManager

NewAccountManager creates a manager for the given directory.

func (*AccountManager) DeleteAccount added in v1.5.0 

func (am *AccountManager) DeleteAccount(a *Account, passphrase string) error

DeleteAccount deletes the key matched by account if the passphrase is correct. If a contains no filename, the address must match a unique key.

func (*AccountManager) ExportKey added in v1.5.0 

func (am *AccountManager) ExportKey(a *Account, passphrase, newPassphrase string) ([]byte, error)

ExportKey exports as a JSON key, encrypted with newPassphrase.

func (*AccountManager) GetAccounts added in v1.5.0 

func (am *AccountManager) GetAccounts() *Accounts

GetAccounts returns all key files present in the directory.

func (*AccountManager) HasAddress added in v1.5.0 

func (am *AccountManager) HasAddress(addr *Address) bool

HasAddress reports whether a key with the given address is present.

func (*AccountManager) ImportKey added in v1.5.0 

func (am *AccountManager) ImportKey(keyJSON []byte, passphrase, newPassphrase string) (*Account, error)

ImportKey stores the given encrypted JSON key into the key directory.

func (*AccountManager) ImportPreSaleKey added in v1.5.0 

func (am *AccountManager) ImportPreSaleKey(keyJSON []byte, passphrase string) (*Account, error)

ImportPreSaleKey decrypts the given Ethereum presale wallet and stores a key file in the key directory. The key file is encrypted with the same passphrase.

func (*AccountManager) Lock added in v1.5.0 

func (am *AccountManager) Lock(addr *Address) error

Lock removes the private key with the given address from memory.

func (*AccountManager) NewAccount added in v1.5.0 

func (am *AccountManager) NewAccount(passphrase string) (*Account, error)

NewAccount generates a new key and stores it into the key directory, encrypting it with the passphrase.

func (*AccountManager) Sign added in v1.5.0 

func (am *AccountManager) Sign(addr *Address, hash []byte) ([]byte, error)

Sign signs hash with an unlocked private key matching the given address.

func (*AccountManager) SignWithPassphrase added in v1.5.0 

func (am *AccountManager) SignWithPassphrase(addr *Address, passphrase string, hash []byte) ([]byte, error)

SignWithPassphrase signs hash if the private key matching the given address can be decrypted with the given passphrase.

func (*AccountManager) TimedUnlock added in v1.5.0 

func (am *AccountManager) TimedUnlock(a *Account, passphrase string, timeout int64) error

TimedUnlock unlocks the given account with the passphrase. The account stays unlocked for the duration of timeout. A timeout of 0 unlocks the account until the program exits. The account must match a unique key file.

If the account address is already unlocked for a duration, TimedUnlock extends or shortens the active unlock timeout. If the address was previously unlocked indefinitely the timeout is not altered.

func (*AccountManager) Unlock added in v1.5.0 

func (am *AccountManager) Unlock(a *Account, passphrase string) error

Unlock unlocks the given account indefinitely.

func (*AccountManager) Update added in v1.5.0 

func (am *AccountManager) Update(a *Account, passphrase, newPassphrase string) error

Update changes the passphrase of an existing account.

type Accounts 

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

Accounts represents a slice of accounts.

func (*Accounts) Get 

func (a *Accounts) Get(index int) (*Account, error)

Get returns the account at the given index from the slice.

func (*Accounts) Set 

func (a *Accounts) Set(index int, account *Account) error

Set sets the account at the given index in the slice.

func (*Accounts) Size 

func (a *Accounts) Size() int

Size returns the number of accounts in the slice.

type Address 

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

Address represents the 20 byte address of an Ethereum account.

func NewAddressFromBytes 

func NewAddressFromBytes(address []byte) (*Address, error)

NewAddressFromBytes converts a slice of bytes to a hash value.

func NewAddressFromHex 

func NewAddressFromHex(address string) (*Address, error)

NewAddressFromHex converts a hex string to a address value.

func (*Address) GetBytes 

func (a *Address) GetBytes() []byte

GetBytes retrieves the byte representation of the address.

func (*Address) GetHex 

func (a *Address) GetHex() string

GetHex retrieves the hex string representation of the address.

func (*Address) SetBytes 

func (a *Address) SetBytes(address []byte) error

SetBytes sets the specified slice of bytes as the address value.

func (*Address) SetHex 

func (a *Address) SetHex(address string) error

SetHex sets the specified hex string as the address value.

type Addresses 

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

Addresses represents a slice of addresses.

func (*Addresses) Get 

func (a *Addresses) Get(index int) (*Address, error)

Get returns the address at the given index from the slice.

func (*Addresses) Set 

func (a *Addresses) Set(index int, address *Address) error

Set sets the address at the given index in the slice.

func (*Addresses) Size 

func (a *Addresses) Size() int

Size returns the number of addresses in the slice.

type BigInt 

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

A BigInt represents a signed multi-precision integer.

func NewBigInt 

func NewBigInt(x int64) *BigInt

NewBigInt allocates and returns a new BigInt set to x.

func (*BigInt) GetBytes 

func (bi *BigInt) GetBytes() []byte

GetBytes returns the absolute value of x as a big-endian byte slice.

func (*BigInt) GetInt64 

func (bi *BigInt) GetInt64() int64

GetInt64 returns the int64 representation of x. If x cannot be represented in an int64, the result is undefined.

func (*BigInt) GetString 

func (bi *BigInt) GetString(base int) string

GetString returns the value of x as a formatted string in some number base.

func (*BigInt) SetBytes 

func (bi *BigInt) SetBytes(buf []byte)

SetBytes interprets buf as the bytes of a big-endian unsigned integer and sets the big int to that value.

func (*BigInt) SetInt64 

func (bi *BigInt) SetInt64(x int64)

SetInt64 sets the big int to x.

func (*BigInt) SetString 

func (bi *BigInt) SetString(x string, base int)

SetString sets the big int to x.

The string prefix determines the actual conversion base. A prefix of "0x" or "0X" selects base 16; the "0" prefix selects base 8, and a "0b" or "0B" prefix selects base 2. Otherwise the selected base is 10.

func (*BigInt) String 

func (bi *BigInt) String() string

String returns the value of x as a formatted decimal string.

type BigInts 

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

BigInts represents a slice of big ints.

func (*BigInts) Get 

func (bi *BigInts) Get(index int) (*BigInt, error)

Get returns the bigint at the given index from the slice.

func (*BigInts) Set 

func (bi *BigInts) Set(index int, bigint *BigInt) error

Set sets the big int at the given index in the slice.

func (*BigInts) Size 

func (bi *BigInts) Size() int

Size returns the number of big ints in the slice.

type Block 

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

Block represents an entire block in the Ethereum blockchain.

func (*Block) GetBloom 

func (b *Block) GetBloom() *Bloom

func (*Block) GetCoinbase 

func (b *Block) GetCoinbase() *Address

func (*Block) GetDifficulty 

func (b *Block) GetDifficulty() *BigInt

func (*Block) GetExtra 

func (b *Block) GetExtra() []byte

func (*Block) GetGasLimit 

func (b *Block) GetGasLimit() int64

func (*Block) GetGasUsed 

func (b *Block) GetGasUsed() int64

func (*Block) GetHash 

func (b *Block) GetHash() *Hash

func (*Block) GetHashNoNonce added in v1.5.0 

func (b *Block) GetHashNoNonce() *Hash

func (*Block) GetHeader 

func (b *Block) GetHeader() *Header

func (*Block) GetMixDigest 

func (b *Block) GetMixDigest() *Hash

func (*Block) GetNonce 

func (b *Block) GetNonce() int64

func (*Block) GetNumber 

func (b *Block) GetNumber() int64

func (*Block) GetParentHash 

func (b *Block) GetParentHash() *Hash

func (*Block) GetReceiptHash 

func (b *Block) GetReceiptHash() *Hash

func (*Block) GetRoot 

func (b *Block) GetRoot() *Hash

func (*Block) GetTime 

func (b *Block) GetTime() int64

func (*Block) GetTransaction 

func (b *Block) GetTransaction(hash *Hash) *Transaction

func (*Block) GetTransactions 

func (b *Block) GetTransactions() *Transactions

func (*Block) GetTxHash 

func (b *Block) GetTxHash() *Hash

func (*Block) GetUncleHash 

func (b *Block) GetUncleHash() *Hash

func (*Block) GetUncles 

func (b *Block) GetUncles() *Headers

type Bloom 

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

Bloom represents a 256 bit bloom filter.

func (*Bloom) GetBytes 

func (b *Bloom) GetBytes() []byte

GetBytes retrieves the byte representation of the bloom filter.

func (*Bloom) GetHex 

func (b *Bloom) GetHex() string

GetHex retrieves the hex string representation of the bloom filter.

type BoundContract 

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

BoundContract is the base wrapper object that reflects a contract on the Ethereum network. It contains a collection of methods that are used by the higher level contract bindings to operate.

func BindContract 

func BindContract(address *Address, abiJSON string, client *EthereumClient) (*BoundContract, error)

BindContract creates a low level contract interface through which calls and transactions may be made through.

func DeployContract 

func DeployContract(opts *TransactOpts, abiJSON string, bytecode []byte, client *EthereumClient, args *Interfaces) (*BoundContract, error)

DeployContract deploys a contract onto the Ethereum blockchain and binds the deployment address with a wrapper.

func (*BoundContract) Call 

func (c *BoundContract) Call(opts *CallOpts, out *Interfaces, method string, args *Interfaces) error

Call invokes the (constant) contract method with params as input values and sets the output to result.

func (*BoundContract) GetAddress 

func (c *BoundContract) GetAddress() *Address

func (*BoundContract) GetDeployer 

func (c *BoundContract) GetDeployer() *Transaction

func (*BoundContract) Transact 

func (c *BoundContract) Transact(opts *TransactOpts, method string, args *Interfaces) (*Transaction, error)

Transact invokes the (paid) contract method with params as input values.

func (*BoundContract) Transfer 

func (c *BoundContract) Transfer(opts *TransactOpts) (*Transaction, error)

Transfer initiates a plain transaction to move funds to the contract, calling its default method if one is available.

type CallMsg 

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

CallMsg contains parameters for contract calls.

func NewCallMsg 

func NewCallMsg() *CallMsg

NewCallMsg creates an empty contract call parameter list.

func (*CallMsg) GetData 

func (msg *CallMsg) GetData() []byte

func (*CallMsg) GetFrom 

func (msg *CallMsg) GetFrom() *Address

func (*CallMsg) GetGas 

func (msg *CallMsg) GetGas() int64

func (*CallMsg) GetGasPrice 

func (msg *CallMsg) GetGasPrice() *BigInt

func (*CallMsg) GetTo 

func (msg *CallMsg) GetTo() *Address

func (*CallMsg) GetValue 

func (msg *CallMsg) GetValue() *BigInt

func (*CallMsg) SetData 

func (msg *CallMsg) SetData(data []byte)

func (*CallMsg) SetFrom 

func (msg *CallMsg) SetFrom(address *Address)

func (*CallMsg) SetGas 

func (msg *CallMsg) SetGas(gas int64)

func (*CallMsg) SetGasPrice 

func (msg *CallMsg) SetGasPrice(price *BigInt)

func (*CallMsg) SetTo 

func (msg *CallMsg) SetTo(address *Address)

func (*CallMsg) SetValue 

func (msg *CallMsg) SetValue(value *BigInt)

type CallOpts 

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

CallOpts is the collection of options to fine tune a contract call request.

func NewCallOpts 

func NewCallOpts() *CallOpts

NewCallOpts creates a new option set for contract calls.

func (*CallOpts) GetGasLimit 

func (opts *CallOpts) GetGasLimit() int64

func (*CallOpts) IsPending 

func (opts *CallOpts) IsPending() bool

func (*CallOpts) SetContext 

func (opts *CallOpts) SetContext(context *Context)

func (*CallOpts) SetGasLimit 

func (opts *CallOpts) SetGasLimit(limit int64)

func (*CallOpts) SetPending 

func (opts *CallOpts) SetPending(pending bool)

type ChainConfig added in v1.5.0 

type ChainConfig struct {
	ChainID        int64 // Chain ID for replay protection
	HomesteadBlock int64 // Homestead switch block
	DAOForkBlock   int64 // TheDAO hard-fork switch block
	DAOForkSupport bool  // Whether the nodes supports or opposes the DAO hard-fork
	EIP150Block    int64 // Homestead gas reprice switch block
	EIP150Hash     Hash  // Homestead gas reprice switch block hash
	EIP155Block    int64 // Replay protection switch block
	EIP158Block    int64 // Empty account pruning switch block
}

ChainConfig is the core config which determines the blockchain settings.

func MainnetChainConfig added in v1.5.0 

func MainnetChainConfig() *ChainConfig

MainnetChainConfig returns the chain configurations for the main Ethereum network.

func NewChainConfig added in v1.5.0 

func NewChainConfig() *ChainConfig

NewChainConfig creates a new chain configuration that transitions immediately to homestead and has no notion of the DAO fork (ideal for a private network).

func TestnetChainConfig added in v1.5.0 

func TestnetChainConfig() *ChainConfig

TestnetChainConfig returns the chain configurations for the Ethereum test network.

type Context 

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

Context carries a deadline, a cancelation signal, and other values across API boundaries.

func NewContext 

func NewContext() *Context

NewContext returns a non-nil, empty Context. It is never canceled, has no values, and has no deadline. It is typically used by the main function, initialization, and tests, and as the top-level Context for incoming requests.

func (*Context) WithCancel 

func (c *Context) WithCancel() *Context

WithCancel returns a copy of the original context with cancellation mechanism included.

Canceling this context releases resources associated with it, so code should call cancel as soon as the operations running in this Context complete.

func (*Context) WithDeadline 

func (c *Context) WithDeadline(sec int64, nsec int64) *Context

WithDeadline returns a copy of the original context with the deadline adjusted to be no later than the specified time.

Canceling this context releases resources associated with it, so code should call cancel as soon as the operations running in this Context complete.

func (*Context) WithTimeout 

func (c *Context) WithTimeout(nsec int64) *Context

WithTimeout returns a copy of the original context with the deadline adjusted to be no later than now + the duration specified.

Canceling this context releases resources associated with it, so code should call cancel as soon as the operations running in this Context complete.

type Enode 

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

Enode represents a host on the network.

func NewEnode 

func NewEnode(rawurl string) (*Enode, error)

NewEnode parses a node designator.

There are two basic forms of node designators

  • incomplete nodes, which only have the public key (node ID)
  • complete nodes, which contain the public key and IP/Port information

For incomplete nodes, the designator must look like one of these 

enode://<hex node id>
<hex node id>

For complete nodes, the node ID is encoded in the username portion of the URL, separated from the host by an @ sign. The hostname can only be given as an IP address, DNS domain names are not allowed. The port in the host name section is the TCP listening port. If the TCP and UDP (discovery) ports differ, the UDP port is specified as query parameter "discport".

In the following example, the node URL describes a node with IP address 10.3.58.6, TCP listening port 30303 and UDP discovery port 30301. 

enode://<hex node id>@10.3.58.6:30303?discport=30301

type Enodes 

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

Enodes represents a slice of accounts.

func FoundationBootnodes 

func FoundationBootnodes() *Enodes

FoundationBootnodes returns the enode URLs of the P2P bootstrap nodes operated by the foundation running the V5 discovery protocol.

func NewEnodes 

func NewEnodes(size int) *Enodes

NewEnodes creates a slice of uninitialized enodes.

func NewEnodesEmpty 

func NewEnodesEmpty() *Enodes

NewEnodesEmpty creates an empty slice of Enode values.

func (*Enodes) Append 

func (e *Enodes) Append(enode *Enode)

Append adds a new enode element to the end of the slice.

func (*Enodes) Get 

func (e *Enodes) Get(index int) (*Enode, error)

Get returns the enode at the given index from the slice.

func (*Enodes) Set 

func (e *Enodes) Set(index int, enode *Enode) error

Set sets the enode at the given index in the slice.

func (*Enodes) Size 

func (e *Enodes) Size() int

Size returns the number of enodes in the slice.

type EthereumClient 

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

EthereumClient provides access to the Ethereum APIs.

func NewEthereumClient 

func NewEthereumClient(rawurl string) (*EthereumClient, error)

NewEthereumClient connects a client to the given URL.

func (*EthereumClient) CallContract 

func (ec *EthereumClient) CallContract(ctx *Context, msg *CallMsg, number int64) ([]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 <0, in which case the code is taken from the latest known block. Note that state from very old blocks might not be available.

func (*EthereumClient) EstimateGas 

func (ec *EthereumClient) EstimateGas(ctx *Context, msg *CallMsg) (*BigInt, 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 (*EthereumClient) FilterLogs 

func (ec *EthereumClient) FilterLogs(ctx *Context, query *FilterQuery) (*Logs, error)

FilterLogs executes a filter query.

func (*EthereumClient) GetBalanceAt 

func (ec *EthereumClient) GetBalanceAt(ctx *Context, account *Address, number int64) (*BigInt, error)

GetBalanceAt returns the wei balance of the given account. The block number can be <0, in which case the balance is taken from the latest known block.

func (*EthereumClient) GetBlockByHash 

func (ec *EthereumClient) GetBlockByHash(ctx *Context, hash *Hash) (*Block, error)

GetBlockByHash returns the given full block.

func (*EthereumClient) GetBlockByNumber 

func (ec *EthereumClient) GetBlockByNumber(ctx *Context, number int64) (*Block, error)

GetBlockByNumber returns a block from the current canonical chain. If number is <0, the latest known block is returned.

func (*EthereumClient) GetCodeAt 

func (ec *EthereumClient) GetCodeAt(ctx *Context, account *Address, number int64) ([]byte, error)

GetCodeAt returns the contract code of the given account. The block number can be <0, in which case the code is taken from the latest known block.

func (*EthereumClient) GetHeaderByHash 

func (ec *EthereumClient) GetHeaderByHash(ctx *Context, hash *Hash) (*Header, error)

GetHeaderByHash returns the block header with the given hash.

func (*EthereumClient) GetHeaderByNumber 

func (ec *EthereumClient) GetHeaderByNumber(ctx *Context, number int64) (*Header, error)

GetHeaderByNumber returns a block header from the current canonical chain. If number is <0, the latest known header is returned.

func (*EthereumClient) GetNonceAt 

func (ec *EthereumClient) GetNonceAt(ctx *Context, account *Address, number int64) (int64, error)

GetNonceAt returns the account nonce of the given account. The block number can be <0, in which case the nonce is taken from the latest known block.

func (*EthereumClient) GetPendingBalanceAt 

func (ec *EthereumClient) GetPendingBalanceAt(ctx *Context, account *Address) (*BigInt, error)

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

func (*EthereumClient) GetPendingCodeAt 

func (ec *EthereumClient) GetPendingCodeAt(ctx *Context, account *Address) ([]byte, error)

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

func (*EthereumClient) GetPendingNonceAt 

func (ec *EthereumClient) GetPendingNonceAt(ctx *Context, account *Address) (int64, error)

GetPendingNonceAt 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 (*EthereumClient) GetPendingStorageAt 

func (ec *EthereumClient) GetPendingStorageAt(ctx *Context, account *Address, key *Hash) ([]byte, error)

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

func (*EthereumClient) GetPendingTransactionCount 

func (ec *EthereumClient) GetPendingTransactionCount(ctx *Context) (int, error)

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

func (*EthereumClient) GetStorageAt 

func (ec *EthereumClient) GetStorageAt(ctx *Context, account *Address, key *Hash, number int64) ([]byte, error)

GetStorageAt returns the value of key in the contract storage of the given account. The block number can be <0, in which case the value is taken from the latest known block.

func (*EthereumClient) GetTransactionByHash 

func (ec *EthereumClient) GetTransactionByHash(ctx *Context, hash *Hash) (*Transaction, error)

GetTransactionByHash returns the transaction with the given hash.

func (*EthereumClient) GetTransactionCount 

func (ec *EthereumClient) GetTransactionCount(ctx *Context, hash *Hash) (int, error)

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

func (*EthereumClient) GetTransactionInBlock 

func (ec *EthereumClient) GetTransactionInBlock(ctx *Context, hash *Hash, index int) (*Transaction, error)

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

func (*EthereumClient) GetTransactionReceipt 

func (ec *EthereumClient) GetTransactionReceipt(ctx *Context, hash *Hash) (*Receipt, error)

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

func (*EthereumClient) PendingCallContract 

func (ec *EthereumClient) PendingCallContract(ctx *Context, msg *CallMsg) ([]byte, error)

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

func (*EthereumClient) SendTransaction 

func (ec *EthereumClient) SendTransaction(ctx *Context, tx *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 (*EthereumClient) SubscribeFilterLogs 

func (ec *EthereumClient) SubscribeFilterLogs(ctx *Context, query *FilterQuery, handler FilterLogsHandler, buffer int) (*Subscription, error)

SubscribeFilterLogs subscribes to the results of a streaming filter query.

func (*EthereumClient) SubscribeNewHead 

func (ec *EthereumClient) SubscribeNewHead(ctx *Context, handler NewHeadHandler, buffer int) (*Subscription, error)

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

func (*EthereumClient) SuggestGasPrice 

func (ec *EthereumClient) SuggestGasPrice(ctx *Context) (*BigInt, error)

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

func (*EthereumClient) SyncProgress 

func (ec *EthereumClient) SyncProgress(ctx *Context) (*SyncProgress, error)

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

type FilterLogsHandler 

type FilterLogsHandler interface {
	OnFilterLogs(log *Log)
	OnError(failure string)
}

FilterLogsHandler is a client-side subscription callback to invoke on events and subscription failure.

type FilterQuery 

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

FilterQuery contains options for contact log filtering.

func NewFilterQuery 

func NewFilterQuery() *FilterQuery

NewFilterQuery creates an empty filter query for contact log filtering.

func (*FilterQuery) GetAddresses 

func (fq *FilterQuery) GetAddresses() *Addresses

func (*FilterQuery) GetFromBlock 

func (fq *FilterQuery) GetFromBlock() *BigInt

func (*FilterQuery) GetToBlock 

func (fq *FilterQuery) GetToBlock() *BigInt

func (*FilterQuery) GetTopics 

func (fq *FilterQuery) GetTopics() *Topics

type Hash 

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

Hash represents the 32 byte Keccak256 hash of arbitrary data.

func NewHashFromBytes 

func NewHashFromBytes(hash []byte) (*Hash, error)

NewHashFromBytes converts a slice of bytes to a hash value.

func NewHashFromHex 

func NewHashFromHex(hash string) (*Hash, error)

NewHashFromHex converts a hex string to a hash value.

func (*Hash) GetBytes 

func (h *Hash) GetBytes() []byte

GetBytes retrieves the byte representation of the hash.

func (*Hash) GetHex 

func (h *Hash) GetHex() string

GetHex retrieves the hex string representation of the hash.

func (*Hash) SetBytes 

func (h *Hash) SetBytes(hash []byte) error

SetBytes sets the specified slice of bytes as the hash value.

func (*Hash) SetHex 

func (h *Hash) SetHex(hash string) error

SetHex sets the specified hex string as the hash value.

type Hashes 

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

Hashes represents a slice of hashes.

func (*Hashes) Get 

func (h *Hashes) Get(index int) (*Hash, error)

Get returns the hash at the given index from the slice.

func (*Hashes) Size 

func (h *Hashes) Size() int

Size returns the number of hashes in the slice. 

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

Header represents a block header in the Ethereum blockchain.

func (*Header) GetBloom 

func (h *Header) GetBloom() *Bloom

func (*Header) GetCoinbase 

func (h *Header) GetCoinbase() *Address

func (*Header) GetDifficulty 

func (h *Header) GetDifficulty() *BigInt

func (*Header) GetExtra 

func (h *Header) GetExtra() []byte

func (*Header) GetGasLimit 

func (h *Header) GetGasLimit() int64

func (*Header) GetGasUsed 

func (h *Header) GetGasUsed() int64

func (*Header) GetHash 

func (h *Header) GetHash() *Hash

func (*Header) GetHashNoNonce added in v1.5.0 

func (h *Header) GetHashNoNonce() *Hash

func (*Header) GetMixDigest 

func (h *Header) GetMixDigest() *Hash

func (*Header) GetNonce 

func (h *Header) GetNonce() *Nonce

func (*Header) GetNumber 

func (h *Header) GetNumber() int64

func (*Header) GetParentHash 

func (h *Header) GetParentHash() *Hash

func (*Header) GetReceiptHash 

func (h *Header) GetReceiptHash() *Hash

func (*Header) GetRoot 

func (h *Header) GetRoot() *Hash

func (*Header) GetTime 

func (h *Header) GetTime() int64

func (*Header) GetTxHash 

func (h *Header) GetTxHash() *Hash

func (*Header) GetUncleHash 

func (h *Header) GetUncleHash() *Hash

type Headers 

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

Headers represents a slice of headers.

func (*Headers) Get 

func (h *Headers) Get(index int) (*Header, error)

Get returns the header at the given index from the slice.

func (*Headers) Size 

func (h *Headers) Size() int

Size returns the number of headers in the slice.

type Interface 

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

Interface represents a wrapped version of Go's interface{}, with the capacity to store arbitrary data types.

Since it's impossible to get the arbitrary-ness converted between Go and mobile platforms, we're using explicit getters and setters for the conversions. There is of course no point in enumerating everything, just enough to support the contract bindins requiring client side generated code.

func NewInterface 

func NewInterface() *Interface

NewInterface creates a new empty interface that can be used to pass around generic types.

func (*Interface) GetAddress 

func (i *Interface) GetAddress() *Address

func (*Interface) GetAddresses 

func (i *Interface) GetAddresses() *Addresses

func (*Interface) GetBigInt 

func (i *Interface) GetBigInt() *BigInt

func (*Interface) GetBigInts 

func (i *Interface) GetBigInts() *BigInts

func (*Interface) GetBinaries 

func (i *Interface) GetBinaries() [][]byte

func (*Interface) GetBinary 

func (i *Interface) GetBinary() []byte

func (*Interface) GetBool 

func (i *Interface) GetBool() bool

func (*Interface) GetBools 

func (i *Interface) GetBools() []bool

func (*Interface) GetHash 

func (i *Interface) GetHash() *Hash

func (*Interface) GetHashes 

func (i *Interface) GetHashes() *Hashes

func (*Interface) GetInt16 

func (i *Interface) GetInt16() int16

func (*Interface) GetInt32 

func (i *Interface) GetInt32() int32

func (*Interface) GetInt64 

func (i *Interface) GetInt64() int64

func (*Interface) GetInt8 

func (i *Interface) GetInt8() int8

func (*Interface) GetString 

func (i *Interface) GetString() string

func (*Interface) GetStrings 

func (i *Interface) GetStrings() *Strings

func (*Interface) GetUint16 

func (i *Interface) GetUint16() *BigInt

func (*Interface) GetUint32 

func (i *Interface) GetUint32() *BigInt

func (*Interface) GetUint64 

func (i *Interface) GetUint64() *BigInt

func (*Interface) GetUint8 

func (i *Interface) GetUint8() *BigInt

func (*Interface) SetAddress 

func (i *Interface) SetAddress(address *Address)

func (*Interface) SetAddresses 

func (i *Interface) SetAddresses(addrs *Addresses)

func (*Interface) SetBigInt 

func (i *Interface) SetBigInt(bigint *BigInt)

func (*Interface) SetBigInts 

func (i *Interface) SetBigInts(bigints *BigInts)

func (*Interface) SetBinaries 

func (i *Interface) SetBinaries(binaries [][]byte)

func (*Interface) SetBinary 

func (i *Interface) SetBinary(binary []byte)

func (*Interface) SetBool 

func (i *Interface) SetBool(b bool)

func (*Interface) SetBools 

func (i *Interface) SetBools(bs []bool)

func (*Interface) SetDefaultAddress 

func (i *Interface) SetDefaultAddress()

func (*Interface) SetDefaultAddresses 

func (i *Interface) SetDefaultAddresses()

func (*Interface) SetDefaultBigInt 

func (i *Interface) SetDefaultBigInt()

func (*Interface) SetDefaultBigInts 

func (i *Interface) SetDefaultBigInts()

func (*Interface) SetDefaultBinaries 

func (i *Interface) SetDefaultBinaries()

func (*Interface) SetDefaultBinary 

func (i *Interface) SetDefaultBinary()

func (*Interface) SetDefaultBool 

func (i *Interface) SetDefaultBool()

func (*Interface) SetDefaultBools 

func (i *Interface) SetDefaultBools()

func (*Interface) SetDefaultHash 

func (i *Interface) SetDefaultHash()

func (*Interface) SetDefaultHashes 

func (i *Interface) SetDefaultHashes()

func (*Interface) SetDefaultInt16 

func (i *Interface) SetDefaultInt16()

func (*Interface) SetDefaultInt32 

func (i *Interface) SetDefaultInt32()

func (*Interface) SetDefaultInt64 

func (i *Interface) SetDefaultInt64()

func (*Interface) SetDefaultInt8 

func (i *Interface) SetDefaultInt8()

func (*Interface) SetDefaultString 

func (i *Interface) SetDefaultString()

func (*Interface) SetDefaultStrings 

func (i *Interface) SetDefaultStrings()

func (*Interface) SetDefaultUint16 

func (i *Interface) SetDefaultUint16()

func (*Interface) SetDefaultUint32 

func (i *Interface) SetDefaultUint32()

func (*Interface) SetDefaultUint64 

func (i *Interface) SetDefaultUint64()

func (*Interface) SetDefaultUint8 

func (i *Interface) SetDefaultUint8()

func (*Interface) SetHash 

func (i *Interface) SetHash(hash *Hash)

func (*Interface) SetHashes 

func (i *Interface) SetHashes(hashes *Hashes)

func (*Interface) SetInt16 

func (i *Interface) SetInt16(n int16)

func (*Interface) SetInt32 

func (i *Interface) SetInt32(n int32)

func (*Interface) SetInt64 

func (i *Interface) SetInt64(n int64)

func (*Interface) SetInt8 

func (i *Interface) SetInt8(n int8)

func (*Interface) SetString 

func (i *Interface) SetString(str string)

func (*Interface) SetStrings 

func (i *Interface) SetStrings(strs *Strings)

func (*Interface) SetUint16 

func (i *Interface) SetUint16(bigint *BigInt)

func (*Interface) SetUint32 

func (i *Interface) SetUint32(bigint *BigInt)

func (*Interface) SetUint64 

func (i *Interface) SetUint64(bigint *BigInt)

func (*Interface) SetUint8 

func (i *Interface) SetUint8(bigint *BigInt)

type Interfaces 

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

Interfaces is a slices of wrapped generic objects.

func NewInterfaces 

func NewInterfaces(size int) *Interfaces

NewInterfaces creates a slice of uninitialized interfaces.

func (*Interfaces) Get 

func (i *Interfaces) Get(index int) (*Interface, error)

Get returns the bigint at the given index from the slice.

func (*Interfaces) Set 

func (i *Interfaces) Set(index int, object *Interface) error

Set sets the big int at the given index in the slice.

func (*Interfaces) Size 

func (i *Interfaces) Size() int

Size returns the number of interfaces in the slice.

type Log 

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

Log represents a contract log event. These events are generated by the LOG opcode and stored/indexed by the node.

func (*Log) GetAddress 

func (l *Log) GetAddress() *Address

func (*Log) GetBlockHash 

func (l *Log) GetBlockHash() *Hash

func (*Log) GetBlockNumber 

func (l *Log) GetBlockNumber() int64

func (*Log) GetData 

func (l *Log) GetData() []byte

func (*Log) GetIndex 

func (l *Log) GetIndex() int

func (*Log) GetTopics 

func (l *Log) GetTopics() *Hashes

func (*Log) GetTxHash 

func (l *Log) GetTxHash() *Hash

func (*Log) GetTxIndex 

func (l *Log) GetTxIndex() int

type Logs 

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

Logs represents a slice of VM logs.

func (*Logs) Get 

func (l *Logs) Get(index int) (*Log, error)

Get returns the log at the given index from the slice.

func (*Logs) Size 

func (l *Logs) Size() int

Size returns the number of logs in the slice.

type NewHeadHandler 

type NewHeadHandler interface {
	OnNewHead(header *Header)
	OnError(failure string)
}

NewHeadHandler is a client-side subscription callback to invoke on events and subscription failure.

type Node 

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

Node represents a Geth Ethereum node instance.

func NewNode 

func NewNode(datadir string, config *NodeConfig) (*Node, error)

NewNode creates and configures a new Geth node.

func (*Node) GetEthereumClient 

func (n *Node) GetEthereumClient() (*EthereumClient, error)

GetEthereumClient retrieves a client to access the Ethereum subsystem.

func (*Node) GetNodeInfo 

func (n *Node) GetNodeInfo() *NodeInfo

GetNodeInfo gathers and returns a collection of metadata known about the host.

func (*Node) GetPeersInfo 

func (n *Node) GetPeersInfo() *PeerInfos

GetPeersInfo returns an array of metadata objects describing connected peers.

func (*Node) Start 

func (n *Node) Start() error

Start creates a live P2P node and starts running it.

func (*Node) Stop 

func (n *Node) Stop() error

Stop terminates a running node along with all it's services. In the node was not started, an error is returned.

type NodeConfig 

type NodeConfig struct {
	// Bootstrap nodes used to establish connectivity with the rest of the network.
	BootstrapNodes *Enodes

	// MaxPeers is the maximum number of peers that can be connected. If this is
	// set to zero, then only the configured static and trusted peers can connect.
	MaxPeers int

	// EthereumEnabled specifies whether the node should run the Ethereum protocol.
	EthereumEnabled bool

	// EthereumNetworkID is the network identifier used by the Ethereum protocol to
	// decide if remote peers should be accepted or not.
	EthereumNetworkID int

	// EthereumChainConfig is the default parameters of the blockchain to use. If no
	// configuration is specified, it defaults to the main network.
	EthereumChainConfig *ChainConfig

	// EthereumGenesis is the genesis JSON to use to seed the blockchain with. An
	// empty genesis state is equivalent to using the mainnet's state.
	EthereumGenesis string

	// EthereumTestnetNonces specifies whether to use account nonces from the testnet
	// range (2^20) or from the mainnet one (0).
	EthereumTestnetNonces bool

	// EthereumDatabaseCache is the system memory in MB to allocate for database caching.
	// A minimum of 16MB is always reserved.
	EthereumDatabaseCache int

	// WhisperEnabled specifies whether the node should run the Whisper protocol.
	WhisperEnabled bool
}

NodeConfig represents the collection of configuration values to fine tune the Geth node embedded into a mobile process. The available values are a subset of the entire API provided by go-ethereum to reduce the maintenance surface and dev complexity.

func NewNodeConfig 

func NewNodeConfig() *NodeConfig

NewNodeConfig creates a new node option set, initialized to the default values.

type NodeInfo 

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

NodeInfo represents pi short summary of the information known about the host.

func (*NodeInfo) GetDiscoveryPort 

func (ni *NodeInfo) GetDiscoveryPort() int

func (*NodeInfo) GetEnode 

func (ni *NodeInfo) GetEnode() string

func (*NodeInfo) GetID 

func (ni *NodeInfo) GetID() string

func (*NodeInfo) GetIP 

func (ni *NodeInfo) GetIP() string

func (*NodeInfo) GetListenerAddress 

func (ni *NodeInfo) GetListenerAddress() string

func (*NodeInfo) GetListenerPort 

func (ni *NodeInfo) GetListenerPort() int

func (*NodeInfo) GetName 

func (ni *NodeInfo) GetName() string

func (*NodeInfo) GetProtocols 

func (ni *NodeInfo) GetProtocols() *Strings

type Nonce 

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

A Nonce is a 64-bit hash which proves (combined with the mix-hash) that a sufficient amount of computation has been carried out on a block.

func (*Nonce) GetBytes 

func (n *Nonce) GetBytes() []byte

GetBytes retrieves the byte representation of the block nonce.

func (*Nonce) GetHex 

func (n *Nonce) GetHex() string

GetHex retrieves the hex string representation of the block nonce.

type PeerInfo 

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

PeerInfo represents pi short summary of the information known about pi connected peer.

func (*PeerInfo) GetCaps 

func (pi *PeerInfo) GetCaps() *Strings

func (*PeerInfo) GetID 

func (pi *PeerInfo) GetID() string

func (*PeerInfo) GetLocalAddress 

func (pi *PeerInfo) GetLocalAddress() string

func (*PeerInfo) GetName 

func (pi *PeerInfo) GetName() string

func (*PeerInfo) GetRemoteAddress 

func (pi *PeerInfo) GetRemoteAddress() string

type PeerInfos 

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

PeerInfos represents a slice of infos about remote peers.

func (*PeerInfos) Get 

func (pi *PeerInfos) Get(index int) (*PeerInfo, error)

Get returns the peer info at the given index from the slice.

func (*PeerInfos) Size 

func (pi *PeerInfos) Size() int

Size returns the number of peer info entries in the slice.

type Receipt 

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

Receipt represents the results of a transaction.

func (*Receipt) GetBloom 

func (r *Receipt) GetBloom() *Bloom

func (*Receipt) GetContractAddress 

func (r *Receipt) GetContractAddress() *Address

func (*Receipt) GetCumulativeGasUsed 

func (r *Receipt) GetCumulativeGasUsed() *BigInt

func (*Receipt) GetGasUsed 

func (r *Receipt) GetGasUsed() *BigInt

func (*Receipt) GetLogs 

func (r *Receipt) GetLogs() *Logs

func (*Receipt) GetPostState 

func (r *Receipt) GetPostState() []byte

func (*Receipt) GetTxHash 

func (r *Receipt) GetTxHash() *Hash

type Signer 

type Signer interface {
	Sign(*Address, *Transaction) (*Transaction, error)
}

Signer is an interaface defining the callback when a contract requires a method to sign the transaction before submission.

type Strings 

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

Strings represents s slice of strs.

func (*Strings) Get 

func (s *Strings) Get(index int) (string, error)

Get returns the string at the given index from the slice.

func (*Strings) Set 

func (s *Strings) Set(index int, str string) error

Set sets the string at the given index in the slice.

func (*Strings) Size 

func (s *Strings) Size() int

Size returns the number of strs in the slice.

func (*Strings) String 

func (s *Strings) String() string

String implements the Stringer interface.

type Subscription 

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

Subscription represents an event subscription where events are delivered on a data channel.

func (*Subscription) Unsubscribe 

func (s *Subscription) Unsubscribe()

Unsubscribe cancels the sending of events to the data channel and closes the error channel.

type SyncProgress 

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

SyncProgress gives progress indications when the node is synchronising with the Ethereum network.

func (*SyncProgress) GetCurrentBlock 

func (p *SyncProgress) GetCurrentBlock() int64

func (*SyncProgress) GetHighestBlock 

func (p *SyncProgress) GetHighestBlock() int64

func (*SyncProgress) GetKnownStates 

func (p *SyncProgress) GetKnownStates() int64

func (*SyncProgress) GetPulledStates 

func (p *SyncProgress) GetPulledStates() int64

func (*SyncProgress) GetStartingBlock 

func (p *SyncProgress) GetStartingBlock() int64

type Topics 

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

Topics is a set of topic lists to filter events with.

func (*Topics) Get 

func (t *Topics) Get(index int) (*Hashes, error)

Get returns the topic list at the given index from the slice.

func (*Topics) Set 

func (t *Topics) Set(index int, topics *Hashes) error

Set sets the topic list at the given index in the slice.

func (*Topics) Size 

func (t *Topics) Size() int

Size returns the number of topic lists inside the set

type TransactOpts 

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

TransactOpts is the collection of authorization data required to create a valid Ethereum transaction.

func (*TransactOpts) GetFrom 

func (opts *TransactOpts) GetFrom() *Address

func (*TransactOpts) GetGasLimit 

func (opts *TransactOpts) GetGasLimit() int64

func (*TransactOpts) GetGasPrice 

func (opts *TransactOpts) GetGasPrice() *BigInt

func (*TransactOpts) GetNonce 

func (opts *TransactOpts) GetNonce() int64

func (*TransactOpts) GetValue 

func (opts *TransactOpts) GetValue() *BigInt

func (*TransactOpts) SetContext 

func (opts *TransactOpts) SetContext(context *Context)

func (*TransactOpts) SetFrom 

func (opts *TransactOpts) SetFrom(from *Address)

func (*TransactOpts) SetGasLimit 

func (opts *TransactOpts) SetGasLimit(limit int64)

func (*TransactOpts) SetGasPrice 

func (opts *TransactOpts) SetGasPrice(price *BigInt)

func (*TransactOpts) SetNonce 

func (opts *TransactOpts) SetNonce(nonce int64)

func (*TransactOpts) SetSigner 

func (opts *TransactOpts) SetSigner(s Signer)

func (*TransactOpts) SetValue 

func (opts *TransactOpts) SetValue(value *BigInt)

type Transaction 

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

Transaction represents a single Ethereum transaction.

func (*Transaction) GetCost 

func (tx *Transaction) GetCost() *BigInt

func (*Transaction) GetData 

func (tx *Transaction) GetData() []byte

func (*Transaction) GetFrom 

func (tx *Transaction) GetFrom() (*Address, error)

func (*Transaction) GetGas 

func (tx *Transaction) GetGas() int64

func (*Transaction) GetGasPrice 

func (tx *Transaction) GetGasPrice() *BigInt

func (*Transaction) GetHash 

func (tx *Transaction) GetHash() *Hash

func (*Transaction) GetNonce 

func (tx *Transaction) GetNonce() int64

func (*Transaction) GetSigHash 

func (tx *Transaction) GetSigHash() *Hash

func (*Transaction) GetTo 

func (tx *Transaction) GetTo() *Address

func (*Transaction) GetValue 

func (tx *Transaction) GetValue() *BigInt

func (*Transaction) WithSignature 

func (tx *Transaction) WithSignature(sig []byte) (*Transaction, error)

type Transactions 

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

Transactions represents a slice of transactions.

func (*Transactions) Get 

func (t *Transactions) Get(index int) (*Transaction, error)

Get returns the transaction at the given index from the slice.

func (*Transactions) Size 

func (t *Transactions) Size() int

Size returns the number of transactions in the slice.

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