mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-05 09:06:58 +02:00
6efca134f5
This requires pinning grpc for now as istio client-go otherwise pulls in breaking changes.
71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 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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*/
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package source
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import (
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"context"
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"encoding/gob"
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"net"
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"time"
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log "github.com/sirupsen/logrus"
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"sigs.k8s.io/external-dns/endpoint"
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)
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const (
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dialTimeout = 30 * time.Second
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)
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// connectorSource is an implementation of Source that provides endpoints by connecting
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// to a remote tcp server. The encoding/decoding is done using encoder/gob package.
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type connectorSource struct {
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remoteServer string
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}
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// NewConnectorSource creates a new connectorSource with the given config.
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func NewConnectorSource(remoteServer string) (Source, error) {
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return &connectorSource{
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remoteServer: remoteServer,
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}, nil
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}
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// Endpoints returns endpoint objects.
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func (cs *connectorSource) Endpoints(ctx context.Context) ([]*endpoint.Endpoint, error) {
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endpoints := []*endpoint.Endpoint{}
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conn, err := net.DialTimeout("tcp", cs.remoteServer, dialTimeout)
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if err != nil {
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log.Errorf("Connection error: %v", err)
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return nil, err
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}
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defer conn.Close()
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decoder := gob.NewDecoder(conn)
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if err := decoder.Decode(&endpoints); err != nil {
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log.Errorf("Decode error: %v", err)
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return nil, err
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}
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log.Debugf("Received endpoints: %#v", endpoints)
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return endpoints, nil
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}
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func (cs *connectorSource) AddEventHandler(ctx context.Context, handler func()) {
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}
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