interfaces

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README

Go Quai

The official Golang implementation of the Quai protocol.

API Reference Go Report Card Discord

Prerequisites

  • Go v1.21.0+
  • Git
  • Make

For details on installing prerequisites, visit the node installation instructions in the Quai Documentation.

Building the source

Once you have the necessary prerequisites, clone the go-quai repository and navigate to it using:

$ git clone https://github.com/dominant-strategies/go-quai.git
$ cd go-quai

Next, you will need to copy the boilerplate node configuration file (network.env.dist) into a configuration file called network.env. You can do this by running:

$ cp network.env.dist network.env

Building go-quai requires both a Go (version 1.21.0+ or later) and a C compiler. You can install them using your favorite package manager. Once these dependencies are installed, run:

$ make go-quai

or, to build the full suite of utilities:

$ make all

Executables

The go-quai project comes with several wrappers/executables found in the cmd directory.

go-quai

Our main Quai CLI client. go-quai is the entry point into the Quai network (main-, test-, or private net), capable of running as a slice node (single slice), multi-slice node (subset of slices), and a global node (all slices). Each of these types of nodes can be run as full node (default), a light node (retrieving data live), or an archive node (retaining all historical state).

go-quai can be used by other processes as a gateway into the Quai network via JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports.

go-quai --help for command line options.

go-quai Nodes Single Slice Multiple Slices All Slices
Full Node Slice Full Node (Default) Multi-Slice Full Node Global Full Node
Light Nodes Slice Light Node Multi-Slice Light Node Global Light Node
Archive Node Slice Archive Node Multi-Slice Archive Node Global Archive Node
test

Runs a battery of tests on the repository to ensure it builds and functions correctly.

Running go-quai

Configuration

Configuration is handled in the network.env file. You will need to copy or rename the file to network.env. The make commands will automatically pull from this file for configuration changes.

The default configuration of the network.env file is for a global full node on the main (colosseum) network.

  • The SLICES parameter determines which slices of the network the node will run (i.e. determines whether the node will be a slice node, a multi-slice node, or a global node).

  • The COINBASE paratmeter contains the addresses that mining rewards will be paid to. There is one COINBASE address for each slice.

  • The NETWORK parameter determines the network that the node will run on. Networks include the mainnet (colosseum) and garden networks.

Starting and stopping a node

The go-quai client can be started by using:

$ make run

Using the makefile will preload configuration values from the network.env file.

The go-quai client can be stopped by using:

$ make stop
Viewing logs

Logs are stored in the go-quai/nodelogs directory by default. You can view them by using tail or another utility, like so:

$ tail -f nodelogs/zone-X-Y.log

X and Y should be replaced with values between 0-2 to define which slice's logs to display.

Garden test network

The Garden test network is based on the Blake3 proof-of-work consensus algorithm. As such, it has certain extra overhead and is more susceptible to reorganization attacks due to the network's low difficulty/security.

To run on the Garden test network, modify the network.env configuration file to reflect NETWORK=garden. You should also set ENABLE_ARCHIVE=true to make sure to save the trie-nodes after you stop your node. Then build and run with the same commands as mainnet.

Contribution

Thank you for considering to help out with the source code! We welcome contributions from anyone on the internet, and are grateful for even the smallest of fixes.

If you'd like to contribute to go-quai, please fork, fix, commit and send a pull request for the maintainers to review and merge into the main code base.

Please make sure your contributions adhere to our coding guidelines:

  • Code must adhere to the official Go formatting guidelines (i.e. uses gofmt).
  • Code must be documented adhering to the official Go commentary guidelines.
  • Pull requests need to be based on and opened against the main branch.
  • Commit messages should be prefixed with the package(s) they modify.
    • E.g. "rpc: make trace configs optional"

If you wish to submit more complex changes, please check up with the core devs first in the Quai development Discord Server to ensure your changes are in line with the general philosophy of the project and/or get some early feedback which can make both your efforts much lighter as well as our review and merge procedures quick and simple.

License

The go-quai library (i.e. all code outside of the cmd directory) is licensed under the GNU Lesser General Public License v3.0, also included in our repository in the COPYING.LESSER file.

The go-quai binaries (i.e. all code inside of the cmd directory) is licensed under the GNU General Public License v3.0, also included in our repository in the COPYING file.

Documentation

Overview

Package interfaces defines interfaces for interacting with Quai.

Index

Constants

This section is empty.

Variables

View Source 
var NotFound = errors.New("not found")

NotFound is returned by API methods if the requested item does not exist.

Functions

This section is empty.

Types

type CallMsg 

type CallMsg struct {
	From      common.Address  // the sender of the 'transaction'
	To        *common.Address // the destination contract (nil for contract creation)
	Gas       uint64          // if 0, the call executes with near-infinite gas
	GasPrice  *big.Int        // wei <-> gas exchange ratio
	GasFeeCap *big.Int        // fee cap per gas.
	GasTipCap *big.Int        // tip per gas.
	Value     *big.Int        // amount of wei sent along with the call
	Data      []byte          // input data, usually an ABI-encoded contract method invocation

	AccessList types.AccessList // access list
}

CallMsg contains parameters for contract calls.

type ChainReader 

type ChainReader interface {
	BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
	BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error)
	HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error)
	HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error)
	TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error)
	TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error)

	// This method subscribes to notifications about changes of the head block of
	// the canonical chain.
	SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (Subscription, error)
}

ChainReader provides access to the blockchain. The methods in this interface access raw data from either the canonical chain (when requesting by block number) or any blockchain fork that was previously downloaded and processed by the node. The block number argument can be nil to select the latest canonical block. Reading block headers should be preferred over full blocks whenever possible.

The returned error is NotFound if the requested item does not exist.

type ChainStateReader 

type ChainStateReader interface {
	BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)
	StorageAt(ctx context.Context, account common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error)
	CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)
	NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error)
}

ChainStateReader wraps access to the state trie of the canonical blockchain. Note that implementations of the interface may be unable to return state values for old blocks. In many cases, using CallContract can be preferable to reading raw contract storage.

type ChainSyncReader 

type ChainSyncReader interface {
	SyncProgress(ctx context.Context) (*SyncProgress, error)
}

ChainSyncReader wraps access to the node's current sync status. If there's no sync currently running, it returns nil.

type ContractCaller 

type ContractCaller interface {
	CallContract(ctx context.Context, call CallMsg, blockNumber *big.Int) ([]byte, error)
}

A ContractCaller provides contract calls, essentially transactions that are executed by the EVM but not mined into the blockchain. ContractCall is a low-level method to execute such calls. For applications which are structured around specific contracts, the abigen tool provides a nicer, properly typed way to perform calls.

type FilterQuery 

type FilterQuery struct {
	BlockHash *common.Hash     // used by eth_getLogs, return logs only from block with this hash
	FromBlock *big.Int         // beginning of the queried range, nil means genesis block
	ToBlock   *big.Int         // end of the range, nil means latest block
	Addresses []common.Address // restricts matches to events created by specific contracts

	// The Topic list restricts matches to particular event topics. Each event has a list
	// of topics. Topics matches a prefix of that list. An empty element slice matches any
	// topic. Non-empty elements represent an alternative that matches any of the
	// contained topics.
	//
	// Examples:
	// {} or nil          matches any topic list
	// {{A}}              matches topic A in first position
	// {{}, {B}}          matches any topic in first position AND B in second position
	// {{A}, {B}}         matches topic A in first position AND B in second position
	// {{A, B}, {C, D}}   matches topic (A OR B) in first position AND (C OR D) in second position
	Topics [][]common.Hash
}

FilterQuery contains options for contract log filtering.

type GasEstimator 

type GasEstimator interface {
	EstimateGas(ctx context.Context, call CallMsg) (uint64, error)
}

GasEstimator wraps EstimateGas, which tries to estimate the gas needed to execute a specific transaction based on the pending state. 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.

type GasPricer 

type GasPricer interface {
	SuggestGasPrice(ctx context.Context) (*big.Int, error)
}

GasPricer wraps the gas price oracle, which monitors the blockchain to determine the optimal gas price given current fee market conditions.

type LogFilterer 

type LogFilterer interface {
	FilterLogs(ctx context.Context, q FilterQuery) ([]types.Log, error)
	SubscribeFilterLogs(ctx context.Context, q FilterQuery, ch chan<- types.Log) (Subscription, error)
}

LogFilterer provides access to contract log events using a one-off query or continuous event subscription.

Logs received through a streaming query subscription may have Removed set to true, indicating that the log was reverted due to a chain reorganisation.

type PendingContractCaller 

type PendingContractCaller interface {
	PendingCallContract(ctx context.Context, call CallMsg) ([]byte, error)
}

PendingContractCaller can be used to perform calls against the pending state.

type PendingStateEventer 

type PendingStateEventer interface {
	SubscribePendingTransactions(ctx context.Context, ch chan<- *types.Transaction) (Subscription, error)
}

A PendingStateEventer provides access to real time notifications about changes to the pending state.

type PendingStateReader 

type PendingStateReader interface {
	PendingBalanceAt(ctx context.Context, account common.Address) (*big.Int, error)
	PendingStorageAt(ctx context.Context, account common.Address, key common.Hash) ([]byte, error)
	PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error)
	PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)
	PendingTransactionCount(ctx context.Context) (uint, error)
}

A PendingStateReader provides access to the pending state, which is the result of all known executable transactions which have not yet been included in the blockchain. It is commonly used to display the result of ’unconfirmed’ actions (e.g. wallet value transfers) initiated by the user. The PendingNonceAt operation is a good way to retrieve the next available transaction nonce for a specific account.

type Subscription 

type Subscription interface {
	// Unsubscribe cancels the sending of events to the data channel
	// and closes the error channel.
	Unsubscribe()
	// Err returns the subscription error channel. The error channel receives
	// a value if there is an issue with the subscription (e.g. the network connection
	// delivering the events has been closed). Only one value will ever be sent.
	// The error channel is closed by Unsubscribe.
	Err() <-chan error
}

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

type SyncProgress 

type SyncProgress struct {
	StartingBlock uint64 // Block number where sync began
	CurrentBlock  uint64 // Current block number where sync is at
	HighestBlock  uint64 // Highest alleged block number in the chain
	PulledStates  uint64 // Number of state trie entries already downloaded
	KnownStates   uint64 // Total number of state trie entries known about
}

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

type TransactionReader 

type TransactionReader interface {
	// TransactionByHash checks the pool of pending transactions in addition to the
	// blockchain. The isPending return value indicates whether the transaction has been
	// mined yet. Note that the transaction may not be part of the canonical chain even if
	// it's not pending.
	TransactionByHash(ctx context.Context, txHash common.Hash) (tx *types.Transaction, isPending bool, err error)
	// TransactionReceipt returns the receipt of a mined transaction. Note that the
	// transaction may not be included in the current canonical chain even if a receipt
	// exists.
	TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
}

TransactionReader provides access to past transactions and their receipts. Implementations may impose arbitrary restrictions on the transactions and receipts that can be retrieved. Historic transactions may not be available.

Avoid relying on this interface if possible. Contract logs (through the LogFilterer interface) are more reliable and usually safer in the presence of chain reorganisations.

The returned error is NotFound if the requested item does not exist.

type TransactionSender 

type TransactionSender interface {
	SendTransaction(ctx context.Context, tx *types.Transaction) error
}

TransactionSender wraps transaction sending. The SendTransaction method injects a signed transaction into the pending transaction pool for execution. If the transaction was a contract creation, the TransactionReceipt method can be used to retrieve the contract address after the transaction has been mined.

The transaction must be signed and have a valid nonce to be included. Consumers of the API can use package accounts to maintain local private keys and need can retrieve the next available nonce using PendingNonceAt.

Source Files

View all Source files

Directories

Path Synopsis
cmd
go-quai
quai is the official command-line client for Quai.
 quai is the official command-line client for Quai.
utils
Package utils contains internal helper functions for go-quai commands.
 Package utils contains internal helper functions for go-quai commands.
Package common contains various helper functions.
 Package common contains various helper functions.
bitutil
Package bitutil implements fast bitwise operations.
 Package bitutil implements fast bitwise operations.
fdlimit
hexutil
Package hexutil implements hex encoding with 0x prefix.
 Package hexutil implements hex encoding with 0x prefix.
math
Package math provides integer math utilities.
 Package math provides integer math utilities.
mclock
Package mclock is a wrapper for a monotonic clock source
 Package mclock is a wrapper for a monotonic clock source
prque
Package prque implements a priority queue data structure supporting arbitrary value types and int64 priorities.
 Package prque implements a priority queue data structure supporting arbitrary value types and int64 priorities.
timedcache
Package consensus implements different Quai consensus engines.
 Package consensus implements different Quai consensus engines.
blake3pow
misc
progpow
Package miner implements Quai block creation and mining.
 Package miner implements Quai block creation and mining.
asm
Provides support for dealing with EVM assembly instructions (e.g., disassembling them).
 Provides support for dealing with EVM assembly instructions (e.g., disassembling them).
bloombits
Package bloombits implements bloom filtering on batches of data.
 Package bloombits implements bloom filtering on batches of data.
forkid
rawdb
Package rawdb contains a collection of low level database accessors.
 Package rawdb contains a collection of low level database accessors.
state
Package state provides a caching layer atop the Quai state trie.
 Package state provides a caching layer atop the Quai state trie.
state/pruner
state/snapshot
Package snapshot implements a journalled, dynamic state dump.
 Package snapshot implements a journalled, dynamic state dump.
types
Package types contains data types related to Quai consensus.
 Package types contains data types related to Quai consensus.
vm
Package vm implements the Quai Virtual Machine.
 Package vm implements the Quai Virtual Machine.
vm/runtime
Package runtime provides a basic execution model for executing EVM code.
 Package runtime provides a basic execution model for executing EVM code.
blake2b
Package blake2b implements the BLAKE2b hash algorithm defined by RFC 7693 and the extendable output function (XOF) BLAKE2Xb.
 Package blake2b implements the BLAKE2b hash algorithm defined by RFC 7693 and the extendable output function (XOF) BLAKE2Xb.
bn256
Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve.
 Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve.
ecies
signify
eth
Package eth implements the Quai protocol.
 Package eth implements the Quai protocol.
abi
Package abi implements the Quai ABI (Application Binary Interface).
 Package abi implements the Quai ABI (Application Binary Interface).
downloader
Package downloader contains the manual full chain synchronisation.
 Package downloader contains the manual full chain synchronisation.
ethconfig
Package ethconfig contains the configuration of the ETH and LES protocols.
 Package ethconfig contains the configuration of the ETH and LES protocols.
fetcher
Package fetcher contains the announcement based header, blocks or transaction synchronisation.
 Package fetcher contains the announcement based header, blocks or transaction synchronisation.
filters
Package filters implements an quai filtering system for block, transactions and log events.
 Package filters implements an quai filtering system for block, transactions and log events.
gasprice
protocols/eth
Package ethdb defines the interfaces for an Quai data store.
 Package ethdb defines the interfaces for an Quai data store.
leveldb
Package leveldb implements the key-value database layer based on LevelDB.
 Package leveldb implements the key-value database layer based on LevelDB.
memorydb
Package memorydb implements the key-value database layer based on memory maps.
 Package memorydb implements the key-value database layer based on memory maps.
pebble
Package pebble implements the key-value database layer based on pebble.
 Package pebble implements the key-value database layer based on pebble.
Package event deals with subscriptions to real-time events.
 Package event deals with subscriptions to real-time events.
internal
build
debug
Package debug interfaces Go runtime debugging facilities.
 Package debug interfaces Go runtime debugging facilities.
flags
quaiapi
package quaiapi implements the general Quai API functions.
 package quaiapi implements the general Quai API functions.
testlog
Package testlog provides a log handler for unit tests.
 Package testlog provides a log handler for unit tests.
Go port of Coda Hale's Metrics library
 Go port of Coda Hale's Metrics library
exp
Hook go-metrics into expvar on any /debug/metrics request, load all vars from the registry into expvar, and execute regular expvar handler
 Hook go-metrics into expvar on any /debug/metrics request, load all vars from the registry into expvar, and execute regular expvar handler
influxdb
librato
prometheus
Package prometheus exposes go-metrics into a Prometheus format.
 Package prometheus exposes go-metrics into a Prometheus format.
Package node sets up multi-protocol Quai nodes.
 Package node sets up multi-protocol Quai nodes.
p2p
Package p2p implements the Quai p2p network protocols.
 Package p2p implements the Quai p2p network protocols.
discover
Package discover implements the Node Discovery Protocol.
 Package discover implements the Node Discovery Protocol.
discover/v4wire
Package v4wire implements the Discovery v4 Wire Protocol.
 Package v4wire implements the Discovery v4 Wire Protocol.
discover/v5wire
dnsdisc
Package dnsdisc implements node discovery via DNS.
 Package dnsdisc implements node discovery via DNS.
enode
enr
Package enr implements Quai Node Records.
 Package enr implements Quai Node Records.
msgrate
Package msgrate allows estimating the throughput of peers for more balanced syncs.
 Package msgrate allows estimating the throughput of peers for more balanced syncs.
nat
Package nat provides access to common network port mapping protocols.
 Package nat provides access to common network port mapping protocols.
netutil
Package netutil contains extensions to the net package.
 Package netutil contains extensions to the net package.
rlpx
Package rlpx implements the RLPx transport protocol.
 Package rlpx implements the RLPx transport protocol.
tracker
Package ethclient provides a client for the Quai RPC API.
 Package ethclient provides a client for the Quai RPC API.
ethclient
Package ethclient provides a client for the Quai RPC API.
 Package ethclient provides a client for the Quai RPC API.
Package quaistats implements the network stats reporting service.
 Package quaistats implements the network stats reporting service.
Package rlp implements the RLP serialization format.
 Package rlp implements the RLP serialization format.
Package rpc implements bi-directional JSON-RPC 2.0 on multiple transports.
 Package rpc implements bi-directional JSON-RPC 2.0 on multiple transports.
Package trie implements Merkle Patricia Tries.
 Package trie implements Merkle Patricia Tries.

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