* pkg/up: implement backoff

Every 2nd failure we double the interval until we hit 4 * interval. This
to have some sort of backoff, esp when a large cluster of coredns shares
an upstream (original intent of up package) they will hammer the
upstream. This put some back pressure on that.
Signed-off-by: Miek Gieben <miek@miek.nl>

* Update plugin/pkg/up/up.go
Co-Authored-By: miekg <miek@miek.nl>

We're not doing anything with the data so stop doing it. Also makes
travis 20% faster.
Signed-off-by: Miek Gieben <miek@miek.nl>

Upgrade to new dns lib version; that saw multiple improvements; some
patch releases are in the pipeline.

The big thing here is the removal of ErrTruncated, so we need to deal
with this slightly different in the forward plugin. It removed the
entire truncated.go logic and just checks the message for .Truncated (if
there is a message) and retries with tcp.
Signed-off-by: Miek Gieben <miek@miek.nl>

Textual cleanup.

Miscellaneous textual cleanup.

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

The loadbalancer plugin reorders records. It was doing this for zone
transfers - if you had a CNAME in the zone then your transfer would
be broken because it would get put before the SOA record.

Automatically submitted.

* plugin/forward: remove dynamic read timeout

We care about an upstream being there, so we still have a dynamic dial
time out (by way higher then 200ms) of 1s; this should be fairly stable
for an upstream. The read timeout if more variable because of cached and
non cached responses. As such remove his logic entirely.

Drop to 2s read timeout.

Fixes #2306
Signed-off-by: Miek Gieben <miek@miek.nl>

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

* Set SOA record TTL as min of TTL/MINIMUM

According to
https://tools.ietf.org/html/rfc2308#section-3:

  The TTL of this record is set from the minimum
  of the MINIMUM field of the SOA record and the
  TTL of the SOA itself, and indicates how long a
  resolver may cache the negative answer.

Set the TTL accordingly so as to not always
negative cache SOA records for 300 seconds.

* Inline min func

* Update SOA record tests

* Fix types

* Redo the plugin log PR

Remove the code duplication and call of the "official" functions. This
is the second(?) time we forgot to update the other half, so remove that
problem entirely.

Also add a test if the correct (within limits) time in front of the log
line.
Signed-off-by: Miek Gieben <miek@miek.nl>

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

* Add email

* Add my affiliated organization (Infoblox)

* Add email next to my github handle

Following Governance description, I add my email next to my github handle.

I would need for CNCF Graduation to show the different organizations the maintainers are from. Anyone with no email or personal email (like gmail) will be considered under its own organization.

That would also help when vote will come-in, as we restraint votes for people on the same organization.

@miekg :
* I guess that will need change in the dreck project that parse this file.
* Do you want me to PR the change on that project (miek/dreck) ?

* Update with a comment
Co-Authored-By: fturib <ftur@infoblox.com>

Based on comment:
https://github.com/coredns/coredns/pull/2298#issuecomment-438473086Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Project lead

This change is considered as part of the GOVERNANCE.md update (11/12/2018)
to add the project lead in OWNERS file. The term (11/12/2019) aligns
with GOVERNANCE.md update.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Change term to 11/11/2019, as it should be part of the GOVERNANCE.md update (11/12/2018)
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update to use comment
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* check allowed transfers

* add tests for parsing, and comment about refactor

* Update GOVERNANCE.md

* feedback

* capitalize CNCF

999 chops of suffix zero, 000 allows for the milliseconds to be always
printed with 3 chars. This makes the log the printed with the same
columns.

(partial logs below)

2018-11-13T21:13:28.249Z [INFO] [::1]
2018-11-13T21:13:48.414Z [INFO] [::1]
2018-11-13T21:13:49.1Z [INFO] [::1]

vs:

2018-11-13T21:20:22.262Z [INFO] [::1]
2018-11-13T21:20:22.436Z [INFO] [::1]
2018-11-13T21:20:22.608Z [INFO] [::1]
Signed-off-by: Miek Gieben <miek@miek.nl>

Update README.md in route53 plugin, as credentials_file is
not supported.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* - add metadata support to Log

* - adapt ctx after rebase

Automatically submitted.

Automatically submitted.

Automatically submitted.

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

* plugin/host: parse file without holding lock

Parse first and then swap the maps *while* holding the lock.
Signed-off-by: Miek Gieben <miek@miek.nl>

* add back in the parse function, but now purely for testing
Signed-off-by: Miek Gieben <miek@miek.nl>

This is now the raw size which may be larger than what a particular
client actually sees.

Clarify this a bit.

Fixes #2258
Signed-off-by: Miek Gieben <miek@miek.nl>

* fix truncation bug

* Generate records with generic RRs

* Remove SoundCloud from test name

* Comment for binary-search -1 adjustment

Explain why the binary search may have exited with
a reply size that is too large by one record.

* Refactor to remove sub variable

patch suggested by miek removes unnecessary sub
variable for removing a single line from the
reply.Extra length.

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

* Make the upstream in route53 plugin optional.
Signed-off-by: Jiacheng Xu <xjcmaxwellcjx@gmail.com>

* Add 2 tests for upstream in route53.
Signed-off-by: Jiacheng Xu <xjcmaxwellcjx@gmail.com>

* Change the readme.
Signed-off-by: Jiacheng Xu <xjcmaxwellcjx@gmail.com>

Automatically submitted.

* - UT on metrics verifying that all plugins of all blocs have their metrics collectors declared

* - fix error msg

* - redirect Registry of metric to the one that handle the listener
- allow duplicate of metrics collector on the same Registry (case of same plugin in 2 blocs listening metrics on the same address)

* - fix change of signature

* - ensure cleaning metrics before starting the test (metrics collectors are global vars .. and re-used by several tests)

* - I think I fixed this test. Ensure correct mn of hits and clean metrics before test.

* - fix typo in error msg - proposed at review

* - fix typo in comment

* - remove ResetMetrics functions
- change a way to test the numeric metrics : get the diff between begin and end of test

* - oops. removing debug logs