2017-01-01 18:39:05 +00:00
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package http
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import (
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"bufio"
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"bytes"
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2018-03-03 12:28:44 +00:00
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"context"
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2017-01-01 18:39:05 +00:00
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"errors"
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"io/ioutil"
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"net"
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"net/http"
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"net/url"
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"sync"
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2020-01-31 01:26:39 +03:00
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"github.com/micro/go-micro/v2/client"
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2017-01-01 18:39:05 +00:00
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)
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// Implements the streamer interface
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type httpStream struct {
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sync.RWMutex
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address string
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codec Codec
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context context.Context
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header http.Header
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seq uint64
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closed chan bool
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err error
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conn net.Conn
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reader *bufio.Reader
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request client.Request
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}
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var (
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errShutdown = errors.New("connection is shut down")
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)
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func (h *httpStream) isClosed() bool {
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select {
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case <-h.closed:
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return true
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default:
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return false
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}
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}
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func (h *httpStream) Context() context.Context {
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return h.context
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}
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func (h *httpStream) Request() client.Request {
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return h.request
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}
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2019-01-14 21:32:12 +00:00
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func (h *httpStream) Response() client.Response {
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return nil
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}
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2017-01-01 18:39:05 +00:00
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func (h *httpStream) Send(msg interface{}) error {
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h.Lock()
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defer h.Unlock()
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if h.isClosed() {
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h.err = errShutdown
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return errShutdown
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}
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b, err := h.codec.Marshal(msg)
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if err != nil {
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return err
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}
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buf := &buffer{bytes.NewBuffer(b)}
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defer buf.Close()
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req := &http.Request{
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Method: "POST",
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URL: &url.URL{
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Scheme: "http",
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Host: h.address,
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2019-01-10 22:12:43 +00:00
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Path: h.request.Endpoint(),
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2017-01-01 18:39:05 +00:00
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},
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Header: h.header,
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Body: buf,
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ContentLength: int64(len(b)),
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Host: h.address,
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}
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return req.Write(h.conn)
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}
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func (h *httpStream) Recv(msg interface{}) error {
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h.Lock()
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defer h.Unlock()
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if h.isClosed() {
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h.err = errShutdown
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return errShutdown
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}
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rsp, err := http.ReadResponse(h.reader, new(http.Request))
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if err != nil {
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return err
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}
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defer rsp.Body.Close()
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b, err := ioutil.ReadAll(rsp.Body)
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if err != nil {
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return err
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}
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if rsp.StatusCode != 200 {
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return errors.New(rsp.Status + ": " + string(b))
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}
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return h.codec.Unmarshal(b, msg)
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}
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func (h *httpStream) Error() error {
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h.RLock()
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defer h.RUnlock()
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return h.err
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}
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func (h *httpStream) Close() error {
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select {
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case <-h.closed:
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return nil
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default:
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close(h.closed)
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return h.conn.Close()
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}
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}
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