evm

package
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 Go to latest Published: Oct 17, 2025 License: GPL-3.0, LGPL-3.0 Imports: 99 Imported by: 2

README

EVM Package

The EVM package implements the AvalancheGo VM interface.

VM

The VM creates the Ethereum backend and provides basic block building, parsing, and retrieval logic to the consensus engine.

APIs

The VM creates APIs for the node through the function CreateHandlers(). CreateHandlers returns the Service struct to serve Subnet-EVM specific APIs. Additionally, the Ethereum backend APIs are also returned at the /rpc extension.

Block Handling

The VM implements buildBlock, parseBlock, and getBlock and uses the chain package from AvalancheGo to construct a metered state, which uses these functions to implement an efficient caching layer and maintain the required invariants for blocks that get returned to the consensus engine.

To do this, the VM uses a modified version of the Ethereum RLP block type here and uses the core package's BlockChain type here to handle the insertion and storage of blocks into the chain.

Block

The Block type implements the AvalancheGo ChainVM Block interface. The key functions for this interface are Verify(), Accept(), Reject(), and Status().

The Block type wraps the stateless block type here and implements these functions to allow the consensus engine to verify blocks as valid, perform consensus, and mark them as accepted or rejected. See the documentation in AvalancheGo for the more detailed VM invariants that are maintained here.

Documentation

Index

Constants

View Source 
const (
	// Minimum amount of time to wait to retry building a block after a failed attempt.
	// It is assumed that the first block building attempt is already after the minimum delay time.
	RetryDelay = 100 * time.Millisecond
)

Variables

View Source 
var (
	// ID this VM should be referenced by
	IDStr = "subnetevm"
	ID    = ids.ID{'s', 'u', 'b', 'n', 'e', 't', 'e', 'v', 'm'}
)
View Source 
var (
	// GitCommit is set by the build script
	GitCommit string
	// Version is the version of Subnet EVM
	Version string = "v0.7.10"
)

Functions

func RegisterAllLibEVMExtras 

func RegisterAllLibEVMExtras()

RegisterAllLibEVMExtras is a convenience wrapper for calling core.RegisterExtras, customtypes.Register, and params.RegisterExtras. Together these are necessary and sufficient for configuring libevm for C-Chain behaviour.

It MUST NOT be called more than once and therefore is only allowed to be used in tests and `package main`, to avoid polluting other packages that transitively depend on this one but don't need registration.

Types

type Admin 

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

Admin is the API service for admin API calls

func NewAdminService 

func NewAdminService(vm *VM, performanceDir string) *Admin

func (*Admin) GetVMConfig added in v0.2.2 

func (p *Admin) GetVMConfig(_ *http.Request, _ *struct{}, reply *client.ConfigReply) error

func (*Admin) LockProfile 

func (p *Admin) LockProfile(*http.Request, *struct{}, *api.EmptyReply) error

LockProfile runs a mutex profile writing to the specified file

func (*Admin) MemoryProfile 

func (p *Admin) MemoryProfile(*http.Request, *struct{}, *api.EmptyReply) error

MemoryProfile runs a memory profile writing to the specified file

func (*Admin) SetLogLevel 

func (p *Admin) SetLogLevel(_ *http.Request, args *client.SetLogLevelArgs, _ *api.EmptyReply) error

func (*Admin) StartCPUProfiler 

func (p *Admin) StartCPUProfiler(*http.Request, *struct{}, *api.EmptyReply) error

StartCPUProfiler starts a cpu profile writing to the specified file

func (*Admin) StopCPUProfiler 

func (p *Admin) StopCPUProfiler(*http.Request, *struct{}, *api.EmptyReply) error

StopCPUProfiler stops the cpu profile

type DatabaseConfig added in v0.7.4 

type DatabaseConfig struct {
	// If true, all writes are to memory and are discarded at shutdown.
	ReadOnly bool `json:"readOnly"`

	// Path to database
	Path string `json:"path"`

	// Name of the database type to use
	Name string `json:"name"`

	// Config bytes (JSON) for the database
	// See relevant (pebbledb, leveldb) config options
	Config []byte `json:"-"`
}

type EthPushGossiper added in v0.6.2 

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

EthPushGossiper is used by the ETH backend to push transactions issued over the RPC and added to the mempool to peers.

func (*EthPushGossiper) Add added in v0.6.2 

func (e *EthPushGossiper) Add(tx *types.Transaction)

type Factory 

type Factory struct{}

func (*Factory) New 

func (*Factory) New(logging.Logger) (interface{}, error)

type GossipEthTx added in v0.5.11 

type GossipEthTx struct {
	Tx *types.Transaction
}

func (*GossipEthTx) GossipID added in v0.5.11 

func (tx *GossipEthTx) GossipID() ids.ID

type GossipEthTxMarshaller added in v0.5.11 

type GossipEthTxMarshaller struct{}

func (GossipEthTxMarshaller) MarshalGossip added in v0.5.11 

func (GossipEthTxMarshaller) MarshalGossip(tx *GossipEthTx) ([]byte, error)

func (GossipEthTxMarshaller) UnmarshalGossip added in v0.5.11 

func (GossipEthTxMarshaller) UnmarshalGossip(bytes []byte) (*GossipEthTx, error)

type GossipEthTxPool added in v0.5.11 

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

func NewGossipEthTxPool added in v0.5.11 

func NewGossipEthTxPool(mempool *txpool.TxPool, registerer prometheus.Registerer) (*GossipEthTxPool, error)

func (*GossipEthTxPool) Add added in v0.5.11 

func (g *GossipEthTxPool) Add(tx *GossipEthTx) error

Add enqueues the transaction to the mempool. Subscribe should be called to receive an event if tx is actually added to the mempool or not.

func (*GossipEthTxPool) GetFilter added in v0.5.11 

func (g *GossipEthTxPool) GetFilter() ([]byte, []byte)

func (*GossipEthTxPool) Has added in v0.6.2 

func (g *GossipEthTxPool) Has(txID ids.ID) bool

Has should just return whether or not the [txID] is still in the mempool, not whether it is in the mempool AND pending.

func (*GossipEthTxPool) IsSubscribed added in v0.6.4 

func (g *GossipEthTxPool) IsSubscribed() bool

IsSubscribed returns whether or not the gossip subscription is active.

func (*GossipEthTxPool) Iterate added in v0.5.11 

func (g *GossipEthTxPool) Iterate(f func(tx *GossipEthTx) bool)

func (*GossipEthTxPool) Subscribe added in v0.5.11 

func (g *GossipEthTxPool) Subscribe(ctx context.Context)

type Status 

type Status uint32

Status ... 

const (
	Unknown Status = iota
	Dropped
	Processing
	Accepted
)

List of possible status values Unknown Zero value, means the status is not known Dropped means the transaction was in the mempool, but was dropped because it failed verification Processing means the transaction is in the mempool Accepted means the transaction was accepted

func (Status) MarshalJSON 

func (s Status) MarshalJSON() ([]byte, error)

MarshalJSON ...

func (Status) String 

func (s Status) String() string

func (*Status) UnmarshalJSON 

func (s *Status) UnmarshalJSON(b []byte) error

UnmarshalJSON ...

func (Status) Valid 

func (s Status) Valid() error

Valid returns nil if the status is a valid status.

type VM 

type VM struct {

	// *chain.State helps to implement the VM interface by wrapping blocks
	// with an efficient caching layer.
	*chain.State

	network.Network

	// State sync server and client
	vmsync.Server
	vmsync.Client
	// contains filtered or unexported fields
}

VM implements the snowman.ChainVM interface

func (*VM) Connected 

func (vm *VM) Connected(ctx context.Context, nodeID ids.NodeID, version *version.Application) error

func (*VM) CreateHTTP2Handler added in v0.7.5 

func (*VM) CreateHTTP2Handler(context.Context) (http.Handler, error)

func (*VM) CreateHandlers 

func (vm *VM) CreateHandlers(context.Context) (map[string]http.Handler, error)

CreateHandlers makes new http handlers that can handle API calls

func (*VM) Disconnected 

func (vm *VM) Disconnected(ctx context.Context, nodeID ids.NodeID) error

func (*VM) GetAcceptedBlock added in v0.6.8 

func (vm *VM) GetAcceptedBlock(ctx context.Context, blkID ids.ID) (snowman.Block, error)

GetAcceptedBlock attempts to retrieve block [blkID] from the VM. This method only returns accepted blocks.

func (*VM) GetBlockIDAtHeight added in v0.1.1 

func (vm *VM) GetBlockIDAtHeight(_ context.Context, height uint64) (ids.ID, error)

GetBlockIDAtHeight returns the canonical block at [height]. Note: the engine assumes that if a block is not found at [height], then [database.ErrNotFound] will be returned. This indicates that the VM has state synced and does not have all historical blocks available.

func (*VM) GetCurrentNonce 

func (vm *VM) GetCurrentNonce(address common.Address) (uint64, error)

GetCurrentNonce returns the nonce associated with the address at the preferred block

func (*VM) HealthCheck 

func (*VM) HealthCheck(context.Context) (interface{}, error)

Health returns nil if this chain is healthy. Also returns details, which should be one of: string, []byte, map[string]string

func (*VM) Initialize 

func (vm *VM) Initialize(
	_ context.Context,
	chainCtx *snow.Context,
	db database.Database,
	genesisBytes []byte,
	upgradeBytes []byte,
	configBytes []byte,
	fxs []*commonEng.Fx,
	appSender commonEng.AppSender,
) error

Initialize implements the snowman.ChainVM interface

func (*VM) NewBlockBuilder 

func (vm *VM) NewBlockBuilder() *blockBuilder

func (*VM) NewHTTPHandler added in v0.7.6 

func (vm *VM) NewHTTPHandler(ctx context.Context) (http.Handler, error)

NewHTTPHandler implements the block.ChainVM interface

func (*VM) ParseEthBlock added in v0.3.0 

func (vm *VM) ParseEthBlock(b []byte) (*types.Block, error)

func (*VM) PutLastAcceptedID 

func (vm *VM) PutLastAcceptedID(id ids.ID) error

func (*VM) SetPreference 

func (vm *VM) SetPreference(ctx context.Context, blkID ids.ID) error

SetPreference sets what the current tail of the chain is

func (*VM) SetState added in v0.1.1 

func (vm *VM) SetState(_ context.Context, state snow.State) error

func (*VM) Shutdown 

func (vm *VM) Shutdown(context.Context) error

Shutdown implements the snowman.ChainVM interface

func (*VM) Version 

func (*VM) Version(context.Context) (string, error)

func (*VM) WaitForEvent added in v0.7.6 

func (vm *VM) WaitForEvent(ctx context.Context) (commonEng.Message, error)

type ValidatorsAPI added in v0.6.12 

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

func (*ValidatorsAPI) GetCurrentValidators added in v0.6.12 

func (api *ValidatorsAPI) GetCurrentValidators(_ *http.Request, req *client.GetCurrentValidatorsRequest, reply *client.GetCurrentValidatorsResponse) error

Source Files

View all Source files

Directories

Path Synopsis
blockgascost implements the block gas cost logic
 blockgascost implements the block gas cost logic
upgrade
legacy
subnetevm
subnetevm defines the dynamic fee window used after subnetevm upgrade.
 subnetevm defines the dynamic fee window used after subnetevm upgrade.
interfaces
state
state/interfaces
Package interfaces is a generated GoMock package.
 Package interfaces is a generated GoMock package.
uptime
uptime/interfaces

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