guest

Documentation

Overview

guest wasm application programming interface for guest module

Package guest is the wasm application programming interface for guest module

Index

• Variables
• func ContextData(ptr uintptr, size uint32) uint32
• func GetBytes(fn func(ptr uintptr, size uint32) (len uint32)) (result []byte)
• type GuestContext
  • func (c *GuestContext) Data() []byte
  • func (c *GuestContext) HTTP() serverless.HTTP
  • func (c *GuestContext) Tag() uint32
  • func (c *GuestContext) Write(tag uint32, data []byte) error
• type GuestHTTP
  • func (g *GuestHTTP) Get(url string) (*serverless.HTTPResponse, error)
  • func (g *GuestHTTP) Post(url string, contentType string, body []byte) (*serverless.HTTPResponse, error)
  • func (g *GuestHTTP) Send(req *serverless.HTTPRequest) (*serverless.HTTPResponse, error)

Variables

var (
	// DataTags set handler observed data tags
	DataTags func() []uint32 = func() []uint32 { return []uint32{0} }
	// Handler is the handler function for guest
	Handler func(ctx serverless.Context) = func(serverless.Context) {}
	// Init is the init function for guest
	Init func() error = func() error { return nil }
)

var (
	// ReadBuf is a buffer used to read data from the host.
	ReadBuf = make([]byte, ReadBufSize)
	// ReadBufPtr is a pointer to ReadBuf.
	ReadBufPtr = uintptr(unsafe.Pointer(&ReadBuf[0]))
	// ReadBufSize is the size of ReadBuf
	ReadBufSize = uint32(2048)
)

Functions

func ContextData

func ContextData(ptr uintptr, size uint32) uint32

ContextData returns the data of the context

func GetBytes

func GetBytes(fn func(ptr uintptr, size uint32) (len uint32)) (result []byte)

GetBytes returns a byte slice of the given size

Types

type GuestContext

type GuestContext struct{}

GuestContext is the context for guest

func (*GuestContext) Data

func (c *GuestContext) Data() []byte

Data returns the data of the context

func (*GuestContext) HTTP

func (c *GuestContext) HTTP() serverless.HTTP

HTTP is the interface for HTTP request, but it is not implemented in the server side

func (*GuestContext) Tag

func (c *GuestContext) Tag() uint32

Tag returns the tag of the context

func (*GuestContext) Write

func (c *GuestContext) Write(tag uint32, data []byte) error

Write writes data to the context

type GuestHTTP

type GuestHTTP struct{}

GuestHTTP is the http client for guest

func (*GuestHTTP) Get

func (g *GuestHTTP) Get(url string) (*serverless.HTTPResponse, error)

Get send http GET request and return http response

func (*GuestHTTP) Post

func (g *GuestHTTP) Post(
	url string,
	contentType string,
	body []byte,
) (*serverless.HTTPResponse, error)

Post send http POST request and return http response

func (*GuestHTTP) Send

func (g *GuestHTTP) Send(req *serverless.HTTPRequest) (*serverless.HTTPResponse, error)

Send send http request and return http response