super small cleanup; smaller case return errors.

Check the error returned by clientConfig.ClientConfig() before trying to
set cc.ContentType.
Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>

Add a note in about using the 'pinned' label for prevent stalebot from
closing your issue.

Implement health.Healther in erratic and kubernetes plugin. The
kubernetes' healtcheck is only performed on startup - i.e. turn
healthy after the initial loading.

Erratic follow the drop count: every query%drop turns the healthcheck
unhealthy.

Fixes: #985

* plugin/log: remove need to specify stdout

Since log will only be output to stdout is doesn't make sense to
specify it in Corefile.

Fixes: #1218

* fixup! plugin/log: remove need to specify stdout

* use index for svc reverse lookup

* temp revert

* restore reverse.go

* restore reverse_test.go

* plugin/log: remove OutputFile

We use stdout for everything, remove OutputFile as it isn't used and
causes confusion.

Fixes #1216

* PR feedback

No need to have this build all the time.

Because we have our own mux we can't depend on the dns.Mux to do the
Question section checking for us. Clarify this in the comment.

I think this badge is misleading as we are not a library so the number of projects we are used in is not really relevant to our adoption. It is more-or-less just the number of external plugins people have built.

* fix pods disabled behavior

* do away with pod mode specific error

We are used by 10+ other projects now. Think it makes
sense to add this badge.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

fix minor capitalization and grammar errors

* Update zipkin to the newer version

Also update thrift to use head commit
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update vendor directory.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Change to use a new 'endpoints' directive and use a constant

Add initial docs for 'endpoints' directive

Add tests to Kubernetes setup for endpoints

Changes based on PR feedback

endpoint_pod_names is a boolean config option. Chahanged docs to reflect this.

Add a test when endpoints_pod_names is not set

Update README.md

Remove endpointNameModeName as it is no longer used

This fix is an attempt to fix the issue raised #1192.
The issue that a plain `dep -ensure update` fails is because
the incompatibility of ugorji/go with the rest of packages (etcd, k8s etc)
and the incompatibility of client-go vs. apimachinery.

This fix fixed apimachinery and ugorji/go so that it is possible
to use `dep -ensure update`.

Previously updates has to be done individually, e.g.,
`dep -ensure update github.com/coreos/etcd`

This fix fixes #1192.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Use one `PLATFORM` variable to setup the build process
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update Makefile.release
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Last minute fixes to push to hub.docker.com.

* Update docker-build steps in Makefile.release

for different architectures
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update to use `case ... esac` in shell script
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Remove `RUN` cmd in Dockerfile in case of non amd64 CPU

ssl will only be supported on amd64 CPUs for now.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

While we at it, why not add a target for Windows as well.

This also introduces a VERBOSE option that defaults to -v, but it empty
when releases so that you can actually see what you're building.

Move an @echo out of shell snippet into the Makefile, as that errored
with @echo: command not found.

Sample run and resulting artifacts:

~~~
% make -f Makefile.release build
% find build -type f -exec file {} \;
build/windows/amd64/coredns: PE32+ executable (console) x86-64 (stripped to external PDB), for MS Windows
build/darwin/amd64/coredns: Mach-O 64-bit x86_64 executable, flags:<NOUNDEFS>
build/linux/ppc64le/coredns: ELF 64-bit LSB executable, 64-bit PowerPC or cisco 7500, version 1 (SYSV), statically linked, stripped
build/linux/amd64/coredns: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, stripped
build/linux/arm/coredns: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, stripped
build/linux/s390x/coredns: ELF 64-bit MSB executable, IBM S/390, version 1 (SYSV), statically linked, stripped
build/linux/arm64/coredns: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, stripped

% make -f Makefile.release tar
% find release -type f | sort
release/coredns_0.9.9_darwin_amd64.tgz
release/coredns_0.9.9_linux_amd64.tgz
release/coredns_0.9.9_linux_arm64.tgz
release/coredns_0.9.9_linux_arm.tgz
release/coredns_0.9.9_linux_ppc64le.tgz
release/coredns_0.9.9_linux_s390x.tgz
release/coredns_0.9.9_windows_amd64.tgz
~~~

This fix updates vendor libraries except client-go, apimachinery
and ugorji/go, as github.com/ugorji/go/codec is causing compatibilities issues.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* release: use for-loop to minize duplication

Use LINUX_ARCH as the basis for all release.

Fix a few typos along the way.

* remove echo

* add manifest list

* nit

* change check

In Makefile.release `shell uname -m` was used to find the current architecture.
On amd64 systems this might be reported as `x86_64` depending on the Linux.
However, in order to have manifest docker images we need to stick with
golang's architecture tag of `amd64`.

This fix changes instead so that the correct architecture conforming to
golang (`amd64`) could be build.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Add a dynamic SOA record (at least the serial and minttl). This create
another interface that should be implemented by the backends.

For now default to returning epoch in as a uint32 (no change from
before).

Lower the minTTL returned to 30s (from 60s)

Fix typo in kubernetes/README.md and remove DEV-README.md as it is stale
and information on the website is more up to date.

Remove large sections of text in plugin.md; just talk about how to
structure your plugin and docs.

* add goroutine to check hosts file for updates

* rename parseFile to parseReader, remove extra error check

* readme: more tests

Add dnssec and file plugin to the test readme. This requires creating a
bunch of files with the right content. Doing so already unconvered an
unconditional type assertion in DNSSEC. This PR will include the fix for
that as well.

Also extended the snippets in the file plugin README, so that they are
whole Corefile - showing more value and checking all corefile snippets.

Create outliner right now is the kubernetes plugin, because even setting
the right env vars will result in:

open /var/run/secrets/kubernetes.io/serviceaccount/token: no such file or directory":

Which we can't create for a test.

* lint

Don't use the 'check and godep' target when building for a release, this
is now repeated 6 times for no reason as this is already checked on
travis.

Some other cleanups in the documentation as well.

* release: add more build targets

This adds amd64, ppc and s390. Rework some other builds/directories.

This builds:
% find build
build
build/darwin
build/darwin/x86_64
build/darwin/x86_64/coredns
build/linux
build/linux/ppc64
build/linux/ppc64/coredns
build/linux/x86_64
build/linux/x86_64/coredns
build/linux/arm64
build/linux/arm64/coredns
build/linux/s390
build/linux/s390/coredns
build/linux/arm
build/linux/arm/coredns

% make -f Makefile.release tar
rm -rf release && mkdir release
tar -zcf release/coredns_0.9.9_linux_x86_64.tgz -C build/linux/x86_64 coredns
tar -zcf release/coredns_0.9.9_darwin_x86_64.tgz -C build/darwin/x86_64 coredns
tar -zcf release/coredns_0.9.9_linux_armv6l.tgz -C build/linux/arm coredns
tar -zcf release/coredns_0.9.9_linux_armv8l.tgz -C build/linux/arm64 coredns
tar -zcf release/coredns_0.9.9_linux_ppc64le.tgz -C build/linux/ppc64 coredns
tar -zcf release/coredns_0.9.9_linux_s390x.tgz -C build/linux/s390 coredns

Checking:
% for i in $(find build -type f); do file $i; done
build/darwin/x86_64/coredns: Mach-O 64-bit x86_64 executable, flags:<NOUNDEFS>
build/linux/ppc64/coredns: ELF 64-bit LSB executable, 64-bit PowerPC or cisco 7500, version 1 (SYSV), statically linked, stripped
build/linux/x86_64/coredns: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, stripped
build/linux/arm64/coredns: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, stripped
build/linux/s390/coredns: ELF 64-bit MSB executable, IBM S/390, version 1 (SYSV), statically linked, stripped
build/linux/arm/coredns: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, stripped

* code review

People are using it in prod and some other updates.

Emphasize `go get` as the main way to get the project.

* integration ci

* rename test

* unfunctionalize DoIntegrationTests

* alphabetize expected answers

* Enable out-of-cluster test

* Enable out-of-cluster test

* move integration tests back to ci repo

Some cleanup in proxy and dnstap:
* just use time pkg directly and side step the indirection for Epoch
* Use Set in SetQueryEpoch to be more Go like. (Looked like a reader)
* Don't maintain two sets of time, we already track start, so use that.
* Use time.Time and convert when needed
* dedent the toDnstap function and put in a separate file