-
Notifications
You must be signed in to change notification settings - Fork 277
/
sds.go
73 lines (62 loc) · 1.79 KB
/
sds.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
//
// Copyright The Athenz Authors
//
// 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
//
// http://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 sds
import (
"errors"
"fmt"
"github.com/AthenZ/athenz/libs/go/sia/aws/options"
envoySecret "github.com/envoyproxy/go-control-plane/envoy/service/secret/v3"
"google.golang.org/grpc"
"log"
"os"
)
func StartGrpcServer(opts *options.Options, certUpdates chan bool) error {
listener, err := StartUdsListener(opts.SDSUdsPath)
if err != nil {
return fmt.Errorf("unable to start uds listener for %s, error: %v", opts.SDSUdsPath, err)
}
defer listener.Close()
grpcServer := grpc.NewServer(
grpc.Creds(NewCredentials()),
)
serverHandler := NewServerHandler(opts)
go notifyCertificateUpdates(serverHandler, certUpdates)
envoySecret.RegisterSecretDiscoveryServiceServer(grpcServer, serverHandler)
errChan := make(chan error)
go func() {
errChan <- grpcServer.Serve(listener)
}()
select {
case err = <-errChan:
log.Println("Stopping GRPC SDS server...")
grpcServer.Stop()
if _, err := os.Stat(opts.SDSUdsPath); err == nil {
os.Remove(opts.SDSUdsPath)
}
if errors.Is(err, grpc.ErrServerStopped) {
err = nil
}
}
return err
}
func notifyCertificateUpdates(serverHandler *ServerHandler, updates <-chan bool) {
for {
select {
case <-updates:
serverHandler.NotifySubscribers()
}
}
}