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conn_extension.go
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conn_extension.go
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/*
* Copyright 2021 CloudWeGo Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package netpoll
import (
"context"
"errors"
"net"
"syscall"
"github.com/cloudwego/netpoll"
"github.com/pjanthony2001/kitex/pkg/remote"
"github.com/pjanthony2001/kitex/pkg/remote/trans"
"github.com/pjanthony2001/kitex/pkg/rpcinfo"
)
// NewNetpollConnExtension to build new netpollConnExtension which implements trans.Extension
func NewNetpollConnExtension() trans.Extension {
return &netpollConnExtension{}
}
type netpollConnExtension struct{}
// SetReadTimeout implements the trans.Extension interface.
func (e *netpollConnExtension) SetReadTimeout(ctx context.Context, conn net.Conn, cfg rpcinfo.RPCConfig, role remote.RPCRole) {
npConn := conn.(netpoll.Connection)
if role == remote.Client {
npConn.SetReadTimeout(trans.GetReadTimeout(cfg))
} else {
npConn.SetReadTimeout(cfg.ReadWriteTimeout())
}
}
// NewWriteByteBuffer implements the trans.Extension interface.
func (e *netpollConnExtension) NewWriteByteBuffer(ctx context.Context, conn net.Conn, msg remote.Message) remote.ByteBuffer {
return NewWriterByteBuffer(conn.(netpoll.Connection).Writer())
}
// NewReadByteBuffer implements the trans.Extension interface.
func (e *netpollConnExtension) NewReadByteBuffer(ctx context.Context, conn net.Conn, msg remote.Message) remote.ByteBuffer {
return NewReaderByteBuffer(conn.(netpoll.Connection).Reader())
}
// ReleaseBuffer implements the trans.Extension interface.
func (e *netpollConnExtension) ReleaseBuffer(buffer remote.ByteBuffer, err error) error {
if buffer != nil {
return buffer.Release(err)
}
return nil
}
// IsTimeoutErr implements the trans.Extension interface.
func (e *netpollConnExtension) IsTimeoutErr(err error) bool {
return err != nil && errors.Is(err, netpoll.ErrReadTimeout)
}
// IsRemoteClosedErr implements the trans.Extension interface.
func (e *netpollConnExtension) IsRemoteClosedErr(err error) bool {
if err == nil {
return false
}
return errors.Is(err, netpoll.ErrConnClosed) || errors.Is(err, syscall.EPIPE)
}