package connect import ( "fmt" "strings" "github.com/hashicorp/consul/agent/structs" ) const ( internal = "internal" version = "v1" internalVersion = internal + "-" + version ) func UpstreamSNI(u *structs.Upstream, subset string, dc string, trustDomain string) string { if u.Datacenter != "" { dc = u.Datacenter } if u.DestinationType == structs.UpstreamDestTypePreparedQuery { return QuerySNI(u.DestinationName, dc, trustDomain) } // TODO(peering): account for peer here? return ServiceSNI(u.DestinationName, subset, u.DestinationNamespace, u.DestinationPartition, dc, trustDomain) } func GatewaySNI(dc string, partition, trustDomain string) string { if partition == "" { // TODO(partitions) Make default available in OSS as a constant for uses like this one partition = "default" } switch partition { case "default": return dotJoin(dc, internal, trustDomain) default: return dotJoin(partition, dc, internalVersion, trustDomain) } } func ServiceSNI(service string, subset string, namespace string, partition string, datacenter string, trustDomain string) string { if namespace == "" { namespace = structs.IntentionDefaultNamespace } if partition == "" { // TODO(partitions) Make default available in OSS as a constant for uses like this one partition = "default" } switch partition { case "default": if subset == "" { return dotJoin(service, namespace, datacenter, internal, trustDomain) } else { return dotJoin(subset, service, namespace, datacenter, internal, trustDomain) } default: if subset == "" { return dotJoin(service, namespace, partition, datacenter, internalVersion, trustDomain) } else { return dotJoin(subset, service, namespace, partition, datacenter, internalVersion, trustDomain) } } } func dotJoin(parts ...string) string { return strings.Join(parts, ".") } func QuerySNI(service string, datacenter string, trustDomain string) string { return fmt.Sprintf("%s.default.%s.query.%s", service, datacenter, trustDomain) } func TargetSNI(target *structs.DiscoveryTarget, trustDomain string) string { return ServiceSNI(target.Service, target.ServiceSubset, target.Namespace, target.Partition, target.Datacenter, trustDomain) }