This fix cleans up `.travis.yml` and use `go_import_path`
to replace the customerized script for go import path
(in case the build is from a forked repo).
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Avoid clashing with other server types.

This clashes to Caddy, which also has its own quiet flag. Move stuff
around a bit, also to prevent cyclic imports.

* Doc: add package docs

Add short package level docs to make godoc looks nicer.
Add some badges to the README.

* correct url

Fix the crash and add `setup_test.go` to catch this in the future.

Fixes #292

Fixes #293

* Added TLS to k8s client

Added options for TLS kubernetes client connection.

* Fix k8s TLS config option parsing

Brings config option parsing for kubernetes TLS in line with recent changes.

* Put TLS config on one line

Put kubernetes tls config on one line to match style established in etcd tls config.

* Add tls option to README

While looking into the proxy middleware it appears that there are
several golint messages:
```
ubuntu@ubuntu:~/coredns$ golint middleware/proxy/
middleware/proxy/lookup.go:66:1: exported method Proxy.Forward should have comment or be unexported
middleware/proxy/proxy.go:24:6: exported type Client should have comment or be unexported
middleware/proxy/proxy.go:107:1: exported function Clients should have comment or be unexported
middleware/proxy/reverseproxy.go:10:6: exported type ReverseProxy should have comment or be unexported
middleware/proxy/reverseproxy.go:16:1: exported method ReverseProxy.ServeDNS should have comment or be unexported
middleware/proxy/upstream.go:42:6: exported type Options should have comment or be unexported
```

This fix addressed the above golint messages.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Lint k8s middleware

Refactoring of k8s helpers

* Fix linter errors

* More linting fixes

* More docs and making members private that dont need to be public

* Fix linter errors

* More linting fixes

* More docs and making members private that dont need to be public

* More lint fixes

This leaves:

~~~
middleware/kubernetes/nametemplate/nametemplate.go:64:6: exported type NameTemplate should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:71:1: exported method NameTemplate.SetTemplate should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:108:1: exported method NameTemplate.GetZoneFromSegmentArray should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:116:1: exported method NameTemplate.GetNamespaceFromSegmentArray should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:120:1: exported method NameTemplate.GetServiceFromSegmentArray should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:124:1: exported method NameTemplate.GetTypeFromSegmentArray should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:135:1: exported method NameTemplate.GetSymbolFromSegmentArray should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:167:1: exported method NameTemplate.IsValid should have comment or be unexported
middleware/kubernetes/nametemplate/nametemplate.go:182:6: exported type NameValues should have comment or be unexported
middleware/kubernetes/util/util.go:1:1: package comment should be of the form "Package util ..."
middleware/kubernetes/util/util.go:27:2: exported const WildcardStar should have comment (or a comment on this block) or be unexported
middleware/proxy/lookup.go:66:1: exported method Proxy.Forward should have comment or be unexported
middleware/proxy/proxy.go:24:6: exported type Client should have comment or be unexported
middleware/proxy/proxy.go:107:1: exported function Clients should have comment or be unexported
middleware/proxy/reverseproxy.go:10:6: exported type ReverseProxy should have comment or be unexported
middleware/proxy/reverseproxy.go:16:1: exported method ReverseProxy.ServeDNS should have comment or be unexported
middleware/proxy/upstream.go:42:6: exported type Options should have comment or be unexported
~~~

I plan on reworking the proxy anyway, so I'll leave that be.

Revert k8s changes

Cleanup the errors and removed deadcode along the way. The leaves
some error laying around, mostly about commenting exported identifier.
We should look hard if those really are needed.

For some reasons there was a dnsserver/middleware.go that defined
the middleware handlers. This code was a repeat from
middleware/middleware.go. Removed dnsserver/middleware.go and replaced
all uses of dnsserver.Middleware with middleware.Middleware.

Added dnsserver/address_test.go to test the zone normalization (and to
improve the test coverage). The deleted file will also improve the test
coverage :)

This is "infrastructure/meta" code, don't need to see it.

This fix adds the codecov.io process with travis-ci integration,
so that code coverage could be processed and displayed with codecov.io.

Since go cannot use test profile flag with multiple packages,
we have to iterate through packages with `coverage.sh`.

Some consolidation could be done by combining them into one `make test`.

Will do some consolidation in a follow up PR.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Do linux last, so my go install isn't messed up. Use gh-release from
PATH.

Document the release process and encode it in Makefile.release. We
use gh-release to minimize the amount of effort required.

Some small additions to the documentation.

When no Corefile is given, default to loading the whoami middleware on
the default port (2053).  Also add back the -port flag that allows you
to override the default port.

Further cleanup the startup messages and use caddy's OnStartupComplete()
to blurp out which zones and ports we have.  These can be suppressed
with the -quiet flag.

Normal startup:

miek.nl.:1053
miek.nl2.:1053
example.org.:1054
2016/09/17 20:41:19 [INFO] CoreDNS-001 starting
CoreDNS-001 starting

with the -quiet flag:

2016/09/17 20:41:34 [INFO] CoreDNS-001 starting

Hook it up properly by adding it to the directives list. And add
the Target to the SRV record to actually return valid DNS messages.

Add a new middleware that tells you who you are; IP, port and transport
is echoed back.

Also some various cleanup and documentation improvements while at it:

* ResponseWriter: improve the documentation of these helper functions.
* And add an NextHandler for use in tests. Make chaos_test.go and
* whoam_test.go use it.

This fix tries to fix 261 where proxy upstream parser is not
able to parse upstream correctly.

Several test cases have also been added to cover the changes
and prevent regression in the future.

This fix fixes 261.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Kubernetes moves informer and controller to pkg/client/cache, see:
https://github.com/kubernetes/kubernetes/pull/32718

As a result, coredns build is broken.

This fix fixes the build by making related change with kubernetes.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Removed lumberjack from coremain

As is mentioned in 251, this fix removed lumberjack from coremain.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Remove lumberjack from log middleware

As mentioned in 251, lumberjack is not suitable for applications like CoreDNS
so it is removed from the log middleware.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update log/README.md as lumberjack has been removed
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Adjust default log output from `ioutil.Discard` to `os.Stdout`
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Stop the caddy message and start our own init notifications.
Log the version of CoreDNS when starting up.
Fix all middleware's setup functions so that return the error prefixed
with *which* middleware was failing; leads to better debuggable errors
when starting up.

Fix some of the documentation in the process.

Move all (almost all) Go files in middleware into their
own packages. This makes for better naming and discoverability.

Lot of changes elsewhere to make this change.

The middleware.State was renamed to request.Request which is better,
but still does not cover all use-cases. It was also moved out middleware
because it is used by `dnsserver` as well.

A pkg/dnsutil packages was added for shared, handy, dns util functions.

All normalize functions are now put in normalize.go