1 // Copyright (c) 2017 Cisco and/or its affiliates.
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at:
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
21 // ErrNotImplemented is an error returned when missing implementation.
22 var ErrNotImplemented = errors.New("not implemented for this OS")
24 // MsgCallback defines func signature for message callback.
25 type MsgCallback func(msgID uint16, data []byte)
27 // VppAPI provides connection to VPP binary API.
28 // It is responsible for sending and receiving of binary-encoded messages to/from VPP.
29 type VppAPI interface {
30 // Connect connects the process to VPP.
33 // Disconnect disconnects the process from VPP.
36 // GetMsgID returns a runtime message ID for the given message name and CRC.
37 GetMsgID(msgName string, msgCrc string) (msgID uint16, err error)
39 // SendMsg sends a binary-encoded message to VPP.
40 SendMsg(context uint32, data []byte) error
42 // SetMsgCallback sets a callback function that will be called by the adapter whenever a message comes from VPP.
43 SetMsgCallback(cb MsgCallback)
45 // WaitReady waits until adapter is ready.