-
Notifications
You must be signed in to change notification settings - Fork 278
/
addressreceiver.go
45 lines (36 loc) · 1.25 KB
/
addressreceiver.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
package worker
import (
"context"
"google.golang.org/grpc/resolver"
"google.golang.org/grpc/resolver/manual"
)
var extraAddressReceivers = noopAddressReceivers
func noopAddressReceivers(context.Context, *Worker) ([]addressReceiver, error) {
return nil, nil
}
// addressReceiver allows the initializing and setting of addresses. Since a
// main use case of this interface is to use it in grpc dialing it satisfies
// a grpc resolver.Builder interface as well.
type addressReceiver interface {
InitialAddresses([]string)
SetAddresses([]string)
}
// grpcResolverReceiver is an addressReceiver which wraps a grpc manual.Resolver
// InitialAddresses is passed onto the Resolver's InitialState method and
// SetAddresses is passed onto the Resolver's UpdateState call.
type grpcResolverReceiver struct {
*manual.Resolver
}
func (r grpcResolverReceiver) getState(addrs []string) resolver.State {
var rAddrs []resolver.Address
for _, a := range addrs {
rAddrs = append(rAddrs, resolver.Address{Addr: a})
}
return resolver.State{Addresses: rAddrs}
}
func (r *grpcResolverReceiver) InitialAddresses(addrs []string) {
r.Resolver.InitialState(r.getState(addrs))
}
func (r *grpcResolverReceiver) SetAddresses(addrs []string) {
r.Resolver.UpdateState(r.getState(addrs))
}