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session.go
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session.go
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// Go NETCONF Client
//
// Copyright (c) 2013-2018, Juniper Networks, Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package netconf provides support for a a simple NETCONF client based on RFC6241 and RFC6242
(although not fully compliant yet).
*/
package netconf
import (
"encoding/xml"
"strings"
)
// Session defines the necessary components for a NETCONF session
type Session struct {
Transport Transport
SessionID int
ServerCapabilities []string
ErrOnWarning bool
}
// Close is used to close and end a transport session
func (s *Session) Close() error {
return s.Transport.Close()
}
// Exec is used to execute an RPC method or methods
func (s *Session) Exec(methods ...RPCMethod) (*RPCReply, error) {
rpc := NewRPCMessage(methods)
request, err := xml.Marshal(rpc)
if err != nil {
return nil, err
}
err = s.Transport.Send(request)
if err != nil {
return nil, err
}
rawXML, err := s.Transport.Receive()
if err != nil {
return nil, err
}
reply, err := newRPCReply(rawXML, s.ErrOnWarning, rpc.MessageID)
if err != nil {
return nil, err
}
return reply, nil
}
// NewSession creates a new NETCONF session using the provided transport layer.
func NewSession(t Transport) *Session {
s := new(Session)
s.Transport = t
// Receive Servers Hello message
serverHello, _ := t.ReceiveHello()
s.SessionID = serverHello.SessionID
s.ServerCapabilities = serverHello.Capabilities
// Send our hello using default capabilities.
t.SendHello(&HelloMessage{Capabilities: DefaultCapabilities})
// Set Transport version
t.SetVersion("v1.0")
for _, capability := range s.ServerCapabilities {
if strings.Contains(capability, "urn:ietf:params:netconf:base:1.1") {
t.SetVersion("v1.1")
break
}
}
return s
}