wasmtime

Documentation

Index

• Constants
• func ImportNodeRuntime(store *wasmtime.Store, memory *wasmtime.Memory) (*wasmtime.Linker, error)
• type Config
• type ImportsFunc
  • func GetRuntimeImports(t *testing.T, targetRuntime string) ImportsFunc
• type Instance
  • func NewInstance(code []byte, cfg *Config) (*Instance, error)
  • func NewInstanceFromFile(fp string, cfg *Config) (*Instance, error)
  • func NewTestInstance(t *testing.T, targetRuntime string) *Instance
  • func NewTestInstanceWithTrie(t *testing.T, targetRuntime string, tt *trie.Trie, lvl log.Lvl) *Instance
  • func (in *Instance) ApplyExtrinsic(data types.Extrinsic) ([]byte, error)
  • func (in *Instance) BabeConfiguration() (*types.BabeConfiguration, error)
  • func (in *Instance) CheckInherents()
  • func (in *Instance) Exec(function string, data []byte) ([]byte, error)
  • func (in *Instance) ExecuteBlock(block *types.Block) ([]byte, error)
  • func (in *Instance) FinalizeBlock() (*types.Header, error)
  • func (in *Instance) GenerateSessionKeys()
  • func (in *Instance) GrandpaAuthorities() ([]*types.Authority, error)
  • func (in *Instance) InherentExtrinsics(data []byte) ([]byte, error)
  • func (in *Instance) InitializeBlock(header *types.Header) error
  • func (in *Instance) Metadata() ([]byte, error)
  • func (in *Instance) NetworkService() gssmrruntime.BasicNetwork
  • func (in *Instance) NodeStorage() gssmrruntime.NodeStorage
  • func (in *Instance) OffchainWorker()
  • func (in *Instance) RandomSeed()
  • func (in *Instance) SetContextStorage(s gssmrruntime.Storage)
  • func (in *Instance) Stop()
  • func (in *Instance) UpdateRuntimeCode(_ []byte) error
  • func (in *Instance) ValidateTransaction(e types.Extrinsic) (*transaction.Validity, error)
  • func (in *Instance) Version() (runtime.Version, error)
• type Memory
  • func (m Memory) Data() []byte
  • func (m Memory) Grow(numPages uint32) error
  • func (m Memory) Length() uint32

Constants

const Name = "wasmtime"

Name represents the name of the interpreter

Functions

func ImportNodeRuntime

func ImportNodeRuntime(store *wasmtime.Store, memory *wasmtime.Memory) (*wasmtime.Linker, error)

ImportNodeRuntime adds the imports for the v0.8 runtime to linker

Types

type Config

type Config struct {
	gssmrruntime.InstanceConfig
	Imports ImportsFunc
}

Config represents a wasmer configuration

type ImportsFunc

type ImportsFunc func(*wasmtime.Store, *wasmtime.Memory) (*wasmtime.Linker, error)

ImportsFunc returns a linker with the module imports

func GetRuntimeImports

func GetRuntimeImports(t *testing.T, targetRuntime string) ImportsFunc

GetRuntimeImports ...

type Instance

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

Instance represents a v0.8 runtime go-wasmtime instance

func NewInstance

func NewInstance(code []byte, cfg *Config) (*Instance, error)

NewInstance instantiates a runtime from the given wasm bytecode

func NewInstanceFromFile

func NewInstanceFromFile(fp string, cfg *Config) (*Instance, error)

NewInstanceFromFile instantiates a runtime from a .wasm file

func NewTestInstance

func NewTestInstance(t *testing.T, targetRuntime string) *Instance

NewTestInstance will create a new runtime instance using the given target runtime

func NewTestInstanceWithTrie

func NewTestInstanceWithTrie(t *testing.T, targetRuntime string, tt *trie.Trie, lvl log.Lvl) *Instance

NewTestInstanceWithTrie will create a new runtime (polkadot/test) with the supplied trie as the storage

func (*Instance) ApplyExtrinsic

func (in *Instance) ApplyExtrinsic(data types.Extrinsic) ([]byte, error)

ApplyExtrinsic calls runtime API function BlockBuilder_apply_extrinsic

func (*Instance) BabeConfiguration

func (in *Instance) BabeConfiguration() (*types.BabeConfiguration, error)

BabeConfiguration gets the configuration data for BABE from the runtime

func (*Instance) CheckInherents

func (in *Instance) CheckInherents()

func (*Instance) Exec

func (in *Instance) Exec(function string, data []byte) ([]byte, error)

Exec calls the given function with the given data

func (*Instance) ExecuteBlock

func (in *Instance) ExecuteBlock(block *types.Block) ([]byte, error)

ExecuteBlock calls runtime function Core_execute_block

func (*Instance) FinalizeBlock

func (in *Instance) FinalizeBlock() (*types.Header, error)

FinalizeBlock calls runtime API function BlockBuilder_finalize_block

func (*Instance) GenerateSessionKeys

func (in *Instance) GenerateSessionKeys()

func (*Instance) GrandpaAuthorities

func (in *Instance) GrandpaAuthorities() ([]*types.Authority, error)

GrandpaAuthorities returns the genesis authorities from the runtime

func (*Instance) InherentExtrinsics

func (in *Instance) InherentExtrinsics(data []byte) ([]byte, error)

InherentExtrinsics calls runtime API function BlockBuilder_inherent_extrinsics

func (*Instance) InitializeBlock

func (in *Instance) InitializeBlock(header *types.Header) error

InitializeBlock calls runtime API function Core_initialize_block

func (*Instance) Metadata

func (in *Instance) Metadata() ([]byte, error)

Metadata calls runtime function Metadata_metadata

func (*Instance) NetworkService

func (in *Instance) NetworkService() gssmrruntime.BasicNetwork

NetworkService returns the context's NetworkService

func (*Instance) NodeStorage

func (in *Instance) NodeStorage() gssmrruntime.NodeStorage

NodeStorage returns the context's NodeStorage

func (*Instance) OffchainWorker

func (in *Instance) OffchainWorker()

func (*Instance) RandomSeed

func (in *Instance) RandomSeed()

func (*Instance) SetContextStorage

func (in *Instance) SetContextStorage(s gssmrruntime.Storage)

SetContextStorage sets the runtime context's Storage

func (*Instance) Stop

func (in *Instance) Stop()

Stop ...

func (*Instance) UpdateRuntimeCode

func (in *Instance) UpdateRuntimeCode(_ []byte) error

UpdateRuntimeCode ...

func (*Instance) ValidateTransaction

func (in *Instance) ValidateTransaction(e types.Extrinsic) (*transaction.Validity, error)

ValidateTransaction runs the extrinsic through runtime function TaggedTransactionQueue_validate_transaction and returns *Validity

func (*Instance) Version

func (in *Instance) Version() (runtime.Version, error)

Version calls runtime function Core_Version

type Memory

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

Memory is a thin wrapper around wasmtime memory to support Gossamer runtime.Memory interface

func (Memory) Data

func (m Memory) Data() []byte

Data returns the memory's data

func (Memory) Grow

func (m Memory) Grow(numPages uint32) error

Grow ...

func (Memory) Length

func (m Memory) Length() uint32

Length returns the memory's length