mirror of https://github.com/status-im/consul.git
43 lines
1.5 KiB
Go
43 lines
1.5 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package dns
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import "github.com/hashicorp/consul/acl"
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// queryLocality is the locality parsed from a DNS query.
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type queryLocality struct {
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// datacenter is the datacenter parsed from a label that has an explicit datacenter part.
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// Example query: <service>.virtual.<namespace>.ns.<partition>.ap.<datacenter>.dc.consul
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datacenter string
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// peer is the peer name parsed from a label that has explicit parts.
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// Example query: <service>.virtual.<namespace>.ns.<peer>.peer.<partition>.ap.consul
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peer string
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// peerOrDatacenter is parsed from DNS queries where the datacenter and peer name are
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// specified in the same query part.
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// Example query: <service>.virtual.<peerOrDatacenter>.consul
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//
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// Note that this field should only be a "peer" for virtual queries, since virtual IPs should
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// not be shared between datacenters. In all other cases, it should be considered a DC.
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peerOrDatacenter string
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acl.EnterpriseMeta
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}
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// EffectiveDatacenter returns the datacenter parsed from a query, or a default
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// value if none is specified.
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func (l queryLocality) EffectiveDatacenter(defaultDC string) string {
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// Prefer the value parsed from a query with explicit parts: <namespace>.ns.<partition>.ap.<datacenter>.dc
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if l.datacenter != "" {
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return l.datacenter
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}
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// Fall back to the ambiguously parsed DC or Peer.
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if l.peerOrDatacenter != "" {
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return l.peerOrDatacenter
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}
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// If all are empty, use a default value.
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return defaultDC
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}
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