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50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
package plugin
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import (
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"context"
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"github.com/coredns/coredns/plugin/etcd/msg"
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"github.com/coredns/coredns/request"
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"github.com/miekg/dns"
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)
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// ServiceBackend defines a (dynamic) backend that returns a slice of service definitions.
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type ServiceBackend interface {
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// Services communicates with the backend to retrieve the service definitions. Exact indicates
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// on exact match should be returned.
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Services(state request.Request, exact bool, opt Options) ([]msg.Service, error)
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// Reverse communicates with the backend to retrieve service definition based on a IP address
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// instead of a name. I.e. a reverse DNS lookup.
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Reverse(state request.Request, exact bool, opt Options) ([]msg.Service, error)
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// Lookup is used to find records else where.
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Lookup(state request.Request, name string, typ uint16) (*dns.Msg, error)
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// Returns _all_ services that matches a certain name.
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// Note: it does not implement a specific service.
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Records(state request.Request, exact bool) ([]msg.Service, error)
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// IsNameError return true if err indicated a record not found condition
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IsNameError(err error) bool
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Transferer
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}
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// Transferer defines an interface for backends that provide AXFR of all records.
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type Transferer interface {
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// Serial returns a SOA serial number to construct a SOA record.
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Serial(state request.Request) uint32
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// MinTTL returns the minimum TTL to be used in the SOA record.
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MinTTL(state request.Request) uint32
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// Transfer handles a zone transfer it writes to the client just
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// like any other handler.
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Transfer(ctx context.Context, state request.Request) (int, error)
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}
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// Options are extra options that can be specified for a lookup.
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type Options struct{}
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