coredns/plugin/backend.go
Miek Gieben 53f3f0b666
Remove context.Context from request.Request (#2726)
* Remove context.Context from request.Request

This removes the context from request.Request and makes all the changes
in the code to make it compile again. It's all mechanical. It did
unearth some weirdness in that the context was kept in handler structs
which may cause havoc with concurrently handling of requests.

Fixes #2721

Signed-off-by: Miek Gieben <miek@miek.nl>

* Make test compile

Signed-off-by: Miek Gieben <miek@miek.nl>
2019-03-26 14:37:30 +00:00

49 lines
1.7 KiB
Go

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