func (c *Codec) WriteMessage(hdr *rpc.Header, body interface{}) error {
r := &outMsg{
RequestId: hdr.RequestId,
Type: hdr.Type,
Id: hdr.Id,
Request: hdr.Request,
Error: hdr.Error,
ErrorCode: hdr.ErrorCode,
}
if hdr.IsRequest() {
r.Params = body
} else {
r.Response = body
}
if c.isLogging() {
data, err := json.Marshal(r)
if err != nil {
log.Debugf("rpc/jsoncodec: -> marshal error: %v", err)
return err
}
log.Debugf("rpc/jsoncodec: -> %s", data)
}
return c.conn.Send(r)
}
func (c *testCodec) WriteMessage(hdr *rpc.Header, x interface{}) error {
if reflect.ValueOf(x).Kind() != reflect.Struct {
panic(fmt.Errorf("WriteRequest bad param; want struct got %T (%#v)", x, x))
}
if c.role != roleBoth && hdr.IsRequest() != (c.role == roleClient) {
panic(fmt.Errorf("codec role %v; header wrong type %#v", c.role, hdr))
}
log.Infof("send header: %#v; body: %#v", hdr, x)
return c.Codec.WriteMessage(hdr, x)
}
func (c *testCodec) ReadHeader(hdr *rpc.Header) error {
err := c.Codec.ReadHeader(hdr)
if err != nil {
return err
}
log.Infof("got header %#v", hdr)
if c.role != roleBoth && hdr.IsRequest() == (c.role == roleClient) {
panic(fmt.Errorf("codec role %v; read wrong type %#v", c.role, hdr))
}
return nil
}
func (c *Codec) ReadHeader(hdr *rpc.Header) error {
c.msg = inMsg{} // avoid any potential cross-message contamination.
var err error
if c.isLogging() {
var m json.RawMessage
err = c.conn.Receive(&m)
if err == nil {
log.Debugf("rpc/jsoncodec: <- %s", m)
err = json.Unmarshal(m, &c.msg)
} else {
log.Debugf("rpc/jsoncodec: <- error: %v (closing %v)", err, c.isClosing())
}
} else {
err = c.conn.Receive(&c.msg)
}
if err != nil {
// If we've closed the connection, we may get a spurious error,
// so ignore it.
if c.isClosing() || err == io.EOF {
return io.EOF
}
return fmt.Errorf("error receiving message: %v", err)
}
hdr.RequestId = c.msg.RequestId
hdr.Type = c.msg.Type
hdr.Id = c.msg.Id
hdr.Request = c.msg.Request
hdr.Error = c.msg.Error
hdr.ErrorCode = c.msg.ErrorCode
return nil
}
func (*suite) TestRead(c *C) {
for i, test := range readTests {
c.Logf("test %d", i)
codec := jsoncodec.New(&testConn{
readMsgs: []string{test.msg},
})
var hdr rpc.Header
err := codec.ReadHeader(&hdr)
c.Assert(err, IsNil)
c.Assert(hdr, DeepEquals, test.expectHdr)
c.Assert(hdr.IsRequest(), Equals, test.expectHdr.IsRequest())
body := reflect.New(reflect.ValueOf(test.expectBody).Type().Elem()).Interface()
err = codec.ReadBody(body, test.expectHdr.IsRequest())
c.Assert(err, IsNil)
c.Assert(body, DeepEquals, test.expectBody)
err = codec.ReadHeader(&hdr)
c.Assert(err, Equals, io.EOF)
}
}
