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20 lines
626 B
Go
20 lines
626 B
Go
package traffic
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import (
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"fmt"
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"github.com/miekg/dns"
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)
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// See https://github.com/grpc/grpc/blob/master/doc/service_config.md for the fields in this proto.
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// We encode it as json and return it in a TXT field.
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// TOOD(miek): balancer name should not be hardcoded
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var lbTXT = `grpc_config=[{"serviceConfig":{"loadBalancingConfig":[{"eds_experimental":{"Cluster": "xds", "EDSServiceName":"%s", "BalancerName":"xds"}}]}}]`
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func txt(z, cluster string) []dns.RR {
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return []dns.RR{&dns.TXT{
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Hdr: dns.RR_Header{Name: z, Rrtype: dns.TypeTXT, Class: dns.ClassINET, Ttl: 5},
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Txt: []string{fmt.Sprintf(lbTXT, cluster)},
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}}
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}
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