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| author |  Miek Gieben <miek@miek.nl>
| 2017-01-15 08:12:58 +0000 |
|---|---|---|
| committer |  GitHub <noreply@github.com>
| 2017-01-15 08:12:58 +0000 |
| commit | 52e01264e8a5901209f83335aa96e091c93ced7e (patch) | |
| tree | 433625011d8ce8f041147ec4ef171d55678be2be /middleware/proxy/exchanger.go | |
| parent | a6d232a622a2f83a5d5ea1d9d946da7f910a0f9e (diff) | |
| download | coredns-52e01264e8a5901209f83335aa96e091c93ced7e.tar.gz coredns-52e01264e8a5901209f83335aa96e091c93ced7e.tar.zst coredns-52e01264e8a5901209f83335aa96e091c93ced7e.zip | |
middleware/proxy: implement Exchanger (#480)
By defining and using an proxy.Exchanger interface we make the proxy
more generic and we can then fold back httproxy into proxy.
This overrides #463 and #473 and should make futures extensions rather
trivial
* Add docs that talk about `protocol` and how to set it.
* middleware/proxy: rename New to NewLookup
It's used as a Lookup mechanism not as a completely new proxy,
reflect that in the name.
* Set maxfails to 3 by default when looking up names.
Most of the changes have been copied
from https://github.com/johnbelamaric/coredns/pull/1/files
Diffstat (limited to 'middleware/proxy/exchanger.go')
| -rw-r--r-- | middleware/proxy/exchanger.go | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/middleware/proxy/exchanger.go b/middleware/proxy/exchanger.go new file mode 100644 index 000000000..29974a289 --- /dev/null +++ b/middleware/proxy/exchanger.go @@ -0,0 +1,18 @@ +package proxy + +import ( + "github.com/miekg/coredns/request" + "github.com/miekg/dns" +) + +// Exchanger is an interface that specifies a type implementing a DNS resolver that +// can use whatever transport it likes. +type Exchanger interface { + Exchange(request.Request) (*dns.Msg, error) + SetUpstream(Upstream) error // (Re)set the upstream + OnStartup() error + OnShutdown() error + Protocol() protocol +} + +type protocol string |