132 lines
2.3 KiB
Go
132 lines
2.3 KiB
Go
// Package socket provides a pseudo socket
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package socket
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import (
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"io"
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"github.com/micro/go-micro/transport"
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)
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// Socket is our pseudo socket for transport.Socket
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type Socket struct {
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id string
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// closed
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closed chan bool
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// remote addr
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remote string
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// local addr
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local string
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// send chan
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send chan *transport.Message
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// recv chan
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recv chan *transport.Message
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}
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func (s *Socket) SetLocal(l string) {
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s.local = l
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}
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func (s *Socket) SetRemote(r string) {
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s.remote = r
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}
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// Accept passes a message to the socket which will be processed by the call to Recv
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func (s *Socket) Accept(m *transport.Message) error {
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select {
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case s.recv <- m:
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return nil
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case <-s.closed:
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return io.EOF
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}
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}
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// Process takes the next message off the send queue created by a call to Send
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func (s *Socket) Process(m *transport.Message) error {
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select {
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case msg := <-s.send:
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*m = *msg
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case <-s.closed:
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// see if we need to drain
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select {
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case msg := <-s.send:
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*m = *msg
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return nil
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default:
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return io.EOF
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}
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}
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return nil
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}
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func (s *Socket) Remote() string {
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return s.remote
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}
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func (s *Socket) Local() string {
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return s.local
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}
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func (s *Socket) Send(m *transport.Message) error {
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// make copy
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msg := &transport.Message{
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Header: make(map[string]string),
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Body: make([]byte, len(m.Body)),
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}
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// copy headers
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for k, v := range m.Header {
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msg.Header[k] = v
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}
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// copy body
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copy(msg.Body, m.Body)
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// send a message
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select {
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case s.send <- msg:
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case <-s.closed:
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return io.EOF
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}
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return nil
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}
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func (s *Socket) Recv(m *transport.Message) error {
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// receive a message
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select {
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case msg := <-s.recv:
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// set message
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*m = *msg
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case <-s.closed:
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return io.EOF
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}
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// return nil
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return nil
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}
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// Close closes the socket
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func (s *Socket) Close() error {
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select {
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case <-s.closed:
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// no op
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default:
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close(s.closed)
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}
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return nil
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}
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// New returns a new pseudo socket which can be used in the place of a transport socket.
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// Messages are sent to the socket via Accept and receives from the socket via Process.
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// SetLocal/SetRemote should be called before using the socket.
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func New(id string) *Socket {
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return &Socket{
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id: id,
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closed: make(chan bool),
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local: "local",
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remote: "remote",
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send: make(chan *transport.Message, 128),
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recv: make(chan *transport.Message, 128),
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}
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}
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