EdgexAgent/device-ble-go/vendor/github.com/openziti/channel/v4/classic_impl.go
2025-07-10 20:40:32 +08:00

154 lines
3.4 KiB
Go

/*
Copyright NetFoundry Inc.
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
https://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 channel
import (
"crypto/x509"
"fmt"
"github.com/openziti/transport/v2"
"github.com/pkg/errors"
"net"
"sync/atomic"
"time"
)
type classicImpl struct {
peer transport.Conn
id string
connectionId string
headers map[int32][]byte
closed atomic.Bool
readF readFunction
marshalF marshalFunction
}
func (impl *classicImpl) GetLocalAddr() net.Addr {
return impl.peer.LocalAddr()
}
func (impl *classicImpl) GetRemoteAddr() net.Addr {
return impl.peer.RemoteAddr()
}
func (impl *classicImpl) SetWriteTimeout(duration time.Duration) error {
return impl.peer.SetWriteDeadline(time.Now().Add(duration))
}
func (impl *classicImpl) SetWriteDeadline(deadline time.Time) error {
return impl.peer.SetWriteDeadline(deadline)
}
func (impl *classicImpl) rxHello() (*Message, error) {
msg, readF, marshallF, err := readHello(impl.peer)
impl.readF = readF
impl.marshalF = marshallF
return msg, err
}
func (impl *classicImpl) Rx() (*Message, error) {
if impl.closed.Load() {
return nil, errors.New("underlay closed")
}
return impl.readF(impl.peer)
}
func (impl *classicImpl) Tx(m *Message) error {
if impl.closed.Load() {
return errors.New("underlay closed")
}
data, err := impl.marshalF(m)
if err != nil {
return err
}
_, err = impl.peer.Write(data)
if err != nil {
return err
}
return nil
}
func (impl *classicImpl) Id() string {
return impl.id
}
func (impl *classicImpl) Headers() map[int32][]byte {
return impl.headers
}
func (impl *classicImpl) LogicalName() string {
return "classic"
}
func (impl *classicImpl) ConnectionId() string {
return impl.connectionId
}
func (impl *classicImpl) Certificates() []*x509.Certificate {
return impl.peer.PeerCertificates()
}
func (impl *classicImpl) Label() string {
return fmt.Sprintf("u{%s}->i{%s/%s}", impl.LogicalName(), impl.id, impl.ConnectionId())
}
func (impl *classicImpl) Close() error {
if impl.closed.CompareAndSwap(false, true) {
return impl.peer.Close()
}
return nil
}
func (impl *classicImpl) IsClosed() bool {
return impl.closed.Load()
}
func (impl *classicImpl) init(id string, connectionId string, headers Headers) {
impl.id = id
impl.connectionId = connectionId
impl.headers = headers
}
func (impl *classicImpl) getPeer() transport.Conn {
return impl.peer
}
func newClassicImpl(messageStrategy MessageStrategy, peer transport.Conn, version uint32) classicUnderlay {
readF := ReadV2
marshalF := MarshalV2
if version == 3 { // currently only used for testing fallback to a common protocol version
marshalF = marshalV3
}
if messageStrategy != nil && messageStrategy.GetStreamProducer() != nil {
readF = messageStrategy.GetStreamProducer()
}
if messageStrategy != nil && messageStrategy.GetMarshaller() != nil {
marshalF = messageStrategy.GetMarshaller()
}
return &classicImpl{
peer: peer,
readF: readF,
marshalF: marshalF,
}
}