64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
// Copyright IBM Corp. 2020, 2026
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// SPDX-License-Identifier: BUSL-1.1
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package worker
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import (
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"google.golang.org/grpc/resolver"
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"google.golang.org/grpc/resolver/manual"
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)
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type receiverType uint
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const (
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UnknownReceiverType receiverType = iota
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grpcResolverReceiverType
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secondaryConnectionReceiverType
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)
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// String returns a string representation of the receiverType
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func (s receiverType) String() string {
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return [...]string{
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"unknown",
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"grpcResolver",
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"secondaryConnections",
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}[s]
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}
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// addressReceiver allows the initializing and setting of addresses. Since a
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// main use case of this interface is to use it in grpc dialing it satisfies
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// a grpc resolver.Builder interface as well.
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type addressReceiver interface {
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InitialAddresses([]string)
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SetAddresses([]string)
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Type() receiverType
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}
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// grpcResolverReceiver is an addressReceiver which wraps a grpc manual.Resolver
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// InitialAddresses is passed onto the Resolver's InitialState method and
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// SetAddresses is passed onto the Resolver's UpdateState call.
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type grpcResolverReceiver struct {
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*manual.Resolver
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}
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// IsDialingListener always returns
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func (*grpcResolverReceiver) Type() receiverType {
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return grpcResolverReceiverType
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}
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func (r grpcResolverReceiver) getState(addrs []string) resolver.State {
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var rAddrs []resolver.Address
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for _, a := range addrs {
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rAddrs = append(rAddrs, resolver.Address{Addr: a})
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}
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return resolver.State{Addresses: rAddrs}
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}
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func (r *grpcResolverReceiver) InitialAddresses(addrs []string) {
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r.Resolver.InitialState(r.getState(addrs))
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}
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func (r *grpcResolverReceiver) SetAddresses(addrs []string) {
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r.Resolver.UpdateState(r.getState(addrs))
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}
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