* plugin/dnstap: various cleanups
A recent issue made me look into this plugin, I suspect various other
cleanups (hopefully deletion of code) can be made as well
Remove identical functions ToClientQuery etc, and just use tap.Message
as the base type in plugin. Keep msg/ for a few helper functions that
may proof useful.
This remove the whole test directory as we will just check the things we
are interested in which gives much better feedback and keeps that code
closer together.
tapwr dir is also not needed, writer_test.go was just duplicating the
tests already done. This moves writer.go to the top directory.
Make the only user of dnstap, the forward plugin, use the newer code
also remove the test, a better test there would be a full e2e test to
see the correct thing happens.
Cleanup the Tapper interface and move it to dnstapio where it belongs,
remove higher level interfaces that are not used. This remove
dnstap.Tapper and dnstap.IORoutines.
Use the standard mechanism for getting access to a plugin and remove
shuffling the plugin into the context.
Signed-off-by: Miek Gieben <miek@miek.nl>
* use opts to get the correct proto
Signed-off-by: Miek Gieben <miek@miek.nl>
* Various fixes
Signed-off-by: Miek Gieben <miek@miek.nl>
* Remove bad addr test, as dnstap is only called from within coredns where these fields have been preparsed
Signed-off-by: Miek Gieben <miek@miek.nl>
* dnstap: remove saving the error
all these fields have been preparsed, no need for dnstap to be pedantic
and check (and save!) this error again.
Simplifies it a bit more.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Update plugin/forward/dnstap.go
Co-authored-by: Ruslan Drozhdzh <30860269+rdrozhdzh@users.noreply.github.com>
* Code review
Signed-off-by: Miek Gieben <miek@miek.nl>
* add back in preferUDP
Signed-off-by: Miek Gieben <miek@miek.nl>
* nit
Signed-off-by: Miek Gieben <miek@miek.nl>
Co-authored-by: Ruslan Drozhdzh <30860269+rdrozhdzh@users.noreply.github.com>
* update docs
* plugins: use plugin specific logging
Hooking up pkg/log also changed NewWithPlugin to just take a string
instead of a plugin.Handler as that is more flexible and for instance
the Root "plugin" doesn't implement it fully.
Same logging from the reload plugin:
.:1043
2018/04/22 08:56:37 [INFO] CoreDNS-1.1.1
2018/04/22 08:56:37 [INFO] linux/amd64, go1.10.1,
CoreDNS-1.1.1
linux/amd64, go1.10.1,
2018/04/22 08:56:37 [INFO] plugin/reload: Running configuration MD5 = ec4c9c55cd19759ea1c46b8c45742b06
2018/04/22 08:56:54 [INFO] Reloading
2018/04/22 08:56:54 [INFO] plugin/reload: Running configuration MD5 = 9e2bfdd85bdc9cceb740ba9c80f34c1a
2018/04/22 08:56:54 [INFO] Reloading complete
* update docs
* better doc
* Update all plugins to use plugin/pkg/log
I wish this could have been done with sed. Alas manually changed all
callers to use the new plugin/pkg/log package.
* Error -> Info
* Add docs to debug plugin as well
- added dnstapEncoder object which incapsulates marshalling of dnstap
messages to protobuf and writing data to connection
- dnstapEncoder writes data directly to connection object. It doesn't
use the framestream's "write" method, because it writes data to
intermediate buffer (bufio.Writer) which leads to unnecessary
data copying and drops the performance
- dnstapEncoder reuses a preallocated buffer for marshalling dnstap
messages. Many messages are added to the same buffer. They are
separated with a "frame length" 4-byte values, so the buffer content
is writen to connection object in the format compatible with
framestream library
- added test which guarantees that dnstapEncoder output is the same
as framestream Encoder output
- the performance increase is about 50% in (dio *dnstapIO) serve() method
of dnstap plugin. The overall coredns performance increase is about 10%
in the following configuration:
.:1053 {
erratic {
drop 0
truncate 0
delay 0
}
dnstap tcp://127.0.0.1:6000 full
errors stdout
}
tested with dnsperf tool
* don't spam Travis + valid dnstap payload
* log instead of fmt
* Revert "log instead of fmt"
This reverts commit 88f09c3939.
* log the right way
* log the final way
* minor enhancements
