forgejo/vendor/github.com/couchbase/gomemcached/client/transport.go
2019-02-05 11:52:51 -05:00

68 lines
1.5 KiB
Go
Vendored

package memcached
import (
"errors"
"io"
"github.com/couchbase/gomemcached"
)
var errNoConn = errors.New("no connection")
// UnwrapMemcachedError converts memcached errors to normal responses.
//
// If the error is a memcached response, declare the error to be nil
// so a client can handle the status without worrying about whether it
// indicates success or failure.
func UnwrapMemcachedError(rv *gomemcached.MCResponse,
err error) (*gomemcached.MCResponse, error) {
if rv == err {
return rv, nil
}
return rv, err
}
// ReceiveHook is called after every packet is received (or attempted to be)
var ReceiveHook func(*gomemcached.MCResponse, int, error)
func getResponse(s io.Reader, hdrBytes []byte) (rv *gomemcached.MCResponse, n int, err error) {
if s == nil {
return nil, 0, errNoConn
}
rv = &gomemcached.MCResponse{}
n, err = rv.Receive(s, hdrBytes)
if ReceiveHook != nil {
ReceiveHook(rv, n, err)
}
if err == nil && (rv.Status != gomemcached.SUCCESS && rv.Status != gomemcached.AUTH_CONTINUE) {
err = rv
}
return rv, n, err
}
// TransmitHook is called after each packet is transmitted.
var TransmitHook func(*gomemcached.MCRequest, int, error)
func transmitRequest(o io.Writer, req *gomemcached.MCRequest) (int, error) {
if o == nil {
return 0, errNoConn
}
n, err := req.Transmit(o)
if TransmitHook != nil {
TransmitHook(req, n, err)
}
return n, err
}
func transmitResponse(o io.Writer, res *gomemcached.MCResponse) (int, error) {
if o == nil {
return 0, errNoConn
}
n, err := res.Transmit(o)
return n, err
}