wasm

Documentation

Index

• func NewModuleConfig(m *InitMetadata) wazero.ModuleConfig
• type InitMetadata
  • func GetInitMetadata(ctx context.Context, md metadata.Base) (*InitMetadata, error)

Functions

func NewModuleConfig

func NewModuleConfig(m *InitMetadata) wazero.ModuleConfig

NewModuleConfig returns a new module config appropriate for the initialized metadata.

Types

type InitMetadata

type InitMetadata struct {
	// URL is how to load a `%.wasm` file that implements a command, usually
	// compiled to target WASI.
	//
	// If no scheme is present, this defaults to oci://, referencing an OCI
	// image. The wasm is identified be ENTRYPOINT and any other files in the
	// corresponding layers will be mounted read-only as the root file system.
	//
	// Other valid schemes are file:// for a local file or http[s]:// for one
	// retrieved via HTTP. In these cases, no filesystem will be mounted.
	URL string `mapstructure:"url"`

	// StrictSandbox when true uses fake sources to avoid vulnerabilities such
	// as timing attacks.
	//
	// # Affected configuration
	//
	//   - sys.Walltime increments with a constant value when read, initially a
	//     second resolution of the current system time.
	//   - sys.Nanotime increments with a constant value when read, initially
	//     zero.
	//   - sys.Nanosleep returns immediately.
	//   - Random number generators are seeded with a deterministic source.
	StrictSandbox bool `mapstructure:"strictSandbox"`

	// Guest is WebAssembly binary implementing the guest, loaded from URL.
	Guest []byte `mapstructure:"-"`

	// GuestName is module name of the guest, loaded from URL.
	GuestName string `mapstructure:"-"`
}

func GetInitMetadata

func GetInitMetadata(ctx context.Context, md metadata.Base) (*InitMetadata, error)

GetInitMetadata returns InitMetadata from the input metadata.