tracers

Documentation

Index

• Variables
• func APIs(backend Backend) []rpc.API
• type API
  • func NewAPI(backend Backend) *API
  • func (api *API) TraceBlock(ctx context.Context, blob hexutil.Bytes, config *TraceConfig) ([]*txTraceResult, error)
  • func (api *API) TraceBlockByHash(ctx context.Context, hash common.Hash, config *TraceConfig) ([]*txTraceResult, error)
  • func (api *API) TraceBlockByNumber(ctx context.Context, number rpc.BlockNumber, config *TraceConfig) ([]*txTraceResult, error)
  • func (api *API) TraceCall(ctx context.Context, args api.TransactionArgs, ...) (interface{}, error)
  • func (api *API) TraceTransaction(ctx context.Context, hash common.Hash, config *TraceConfig) (interface{}, error)
• type Backend
• type Context
• type StateReleaseFunc
• type StdTraceConfig
• type TraceCallConfig
• type TraceConfig
• type Tracer

Variables

var DefaultDirectory = directory{/* contains filtered or unexported fields */}

DefaultDirectory is the collection of tracers bundled by default.

Functions

func APIs

func APIs(backend Backend) []rpc.API

APIs return the collection of RPC services the tracer package offers.

Types

type API

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

API is the collection of tracing APIs exposed over the private debugging endpoint.

func NewAPI

func NewAPI(backend Backend) *API

NewAPI creates a new API definition for the tracing methods of the Ethereum service.

func (*API) TraceBlock

func (api *API) TraceBlock(ctx context.Context, blob hexutil.Bytes, config *TraceConfig) ([]*txTraceResult, error)

TraceBlock returns the structured logs created during the execution of EVM and returns them as a JSON object.

func (*API) TraceBlockByHash

func (api *API) TraceBlockByHash(ctx context.Context, hash common.Hash, config *TraceConfig) ([]*txTraceResult, error)

TraceBlockByHash returns the structured logs created during the execution of EVM and returns them as a JSON object.

func (*API) TraceBlockByNumber

func (api *API) TraceBlockByNumber(ctx context.Context, number rpc.BlockNumber, config *TraceConfig) ([]*txTraceResult, error)

TraceBlockByNumber returns the structured logs created during the execution of EVM and returns them as a JSON object.

func (*API) TraceCall

func (api *API) TraceCall(ctx context.Context, args api.TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, config *TraceCallConfig) (interface{}, error)

TraceCall lets you trace a given eth_call. It collects the structured logs created during the execution of EVM if the given transaction was added on top of the provided block and returns them as a JSON object.

func (*API) TraceTransaction

func (api *API) TraceTransaction(ctx context.Context, hash common.Hash, config *TraceConfig) (interface{}, error)

TraceTransaction returns the structured logs created during the execution of EVM and returns them as a JSON object.

type Backend

type Backend interface {
	HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error)
	HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error)
	BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
	BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error)
	GetTransaction(ctx context.Context, txHash common.Hash) (*transaction.Transaction, common.Hash, uint64, uint64, error)
	RPCGasCap() uint64
	ChainConfig() *params.ChainConfig
	Engine() consensus.Engine
	ChainDb() kv.RwDB
	StateAtBlock(ctx context.Context, tx kv.Tx, block *types.Block) (*state.IntraBlockState, error)
	StateAtTransaction(ctx context.Context, tx kv.Tx, block *types.Block, txIndex int) (*transaction.Message, evmtypes.BlockContext, *state.IntraBlockState, error)
}

Backend interface provides the common API services (that are provided by both full and light clients) with access to necessary functions.

type Context

type Context struct {
	BlockHash   common.Hash // Hash of the block the tx is contained within (zero if dangling tx or call)
	BlockNumber *big.Int    // Number of the block the tx is contained within (zero if dangling tx or call)
	TxIndex     int         // Index of the transaction within a block (zero if dangling tx or call)
	TxHash      common.Hash // Hash of the transaction being traced (zero if dangling call)
}

Context contains some contextual infos for a transaction execution that is not available from within the EVM object.

type StateReleaseFunc

type StateReleaseFunc func()

StateReleaseFunc is used to deallocate resources held by constructing a historical state for tracing purposes.

type StdTraceConfig

type StdTraceConfig struct {
	logger.Config
	Reexec *uint64
	TxHash common.Hash
}

StdTraceConfig holds extra parameters to standard-json trace functions.

type TraceCallConfig

type TraceCallConfig struct {
	TraceConfig
	StateOverrides *api.StateOverride
	BlockOverrides *api.BlockOverrides
}

TraceCallConfig is the config for traceCall API. It holds one more field to override the state for tracing.

type TraceConfig

type TraceConfig struct {
	*logger.Config
	Tracer  *string
	Timeout *string
	Reexec  *uint64
	// Config specific to given tracer. Note struct logger
	// config are historically embedded in main object.
	TracerConfig json.RawMessage
}

TraceConfig holds extra parameters to trace functions.

type Tracer

type Tracer interface {
	vm.EVMLogger
	GetResult() (json.RawMessage, error)
	// Stop terminates execution of the tracer at the first opportune moment.
	Stop(err error)
}

Tracer interface extends vm.EVMLogger and additionally allows collecting the tracing result.