mirror of
https://github.com/cloudnativelabs/kube-router.git
synced 2025-10-10 01:11:12 +02:00
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
// Copyright (C) 2016 Nippon Telegraph and Telephone Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package server
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import (
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"github.com/eapache/channels"
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"github.com/osrg/gobgp/packet/bgp"
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)
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func cleanInfiniteChannel(ch *channels.InfiniteChannel) {
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ch.Close()
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// drain all remaining items
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for range ch.Out() {
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}
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}
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// Returns the binary formatted Administrative Shutdown Communication from the
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// given string value.
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func newAdministrativeCommunication(communication string) (data []byte) {
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if communication == "" {
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return nil
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}
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com := []byte(communication)
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if len(com) > bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX {
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data = []byte{bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX}
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data = append(data, com[:bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX]...)
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} else {
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data = []byte{byte(len(com))}
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data = append(data, com...)
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}
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return data
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}
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// Parses the given NOTIFICATION message data as a binary value and returns
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// the Administrative Shutdown Communication in string and the rest binary.
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func decodeAdministrativeCommunication(data []byte) (string, []byte) {
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if len(data) == 0 {
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return "", data
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}
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communicationLen := int(data[0])
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if communicationLen > bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX {
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communicationLen = bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX
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}
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if communicationLen > len(data)+1 {
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communicationLen = len(data) + 1
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}
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return string(data[1 : communicationLen+1]), data[communicationLen+1:]
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}
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