46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
package worker
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import (
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"context"
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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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var extraAddressReceivers = noopAddressReceivers
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func noopAddressReceivers(context.Context, *Worker) ([]addressReceiver, error) {
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return nil, nil
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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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}
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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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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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