Commit graph

42 commits

Author SHA1 Message Date
Sebastiaan van Stijn
cff4f20c44
migrate to github.com/containerd/log v0.1.0
The github.com/containerd/containerd/log package was moved to a separate
module, which will also be used by upcoming (patch) releases of containerd.

This patch moves our own uses of the package to use the new module.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-10-11 17:52:23 +02:00
Sebastiaan van Stijn
0b75c02276
libnetwork/resolvconf: format code with gofumpt
Formatting the code with https://github.com/mvdan/gofumpt

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-06-29 00:31:48 +02:00
Brian Goff
74da6a6363 Switch all logging to use containerd log pkg
This unifies our logging and allows us to propagate logging and trace
contexts together.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2023-06-24 00:23:44 +00:00
Sebastiaan van Stijn
ab35df454d
remove pre-go1.17 build-tags
Removed pre-go1.17 build-tags with go fix;

    go mod init
    go fix -mod=readonly ./...
    rm go.mod

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-05-19 20:38:51 +02:00
Sebastiaan van Stijn
56fbbde2ed
libnetwork/resolvconf: fix some minor (linting) issues
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:50 +02:00
Sebastiaan van Stijn
820975595c
libnetwork/resolvconf: improve tests for Build
- Verify the content to be equal, not "contains"; this output should be
  predictable.
- Also verify the content returned by the function to match.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:50 +02:00
Sebastiaan van Stijn
93c7b25ccd
libnetwork/resolvconf: refactor tests for readability
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:50 +02:00
Sebastiaan van Stijn
43378636d0
libnetwork/resolvconf: allow tests to be run on unix
Looks like the intent is to exclude windows (which wouldn't have /etc/resolv.conf
nor systemd), but most tests would run fine elsewhere. This allows running the
tests on macOS for local testing.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:49 +02:00
Sebastiaan van Stijn
73c637ad60
libnetwork/resolvconf: use t.TempDir(), change t.Fatal to t.Error
Use t.TempDir() for convenience, and change some t.Fatal's to Errors,
so that all tests can run instead of failing early.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:49 +02:00
Sebastiaan van Stijn
fc1e698914
libnetwork/resolvconf: fix TestGet() testing wrong path
The test was assuming that the "source" file was always "/etc/resolv.conf",
but the `Get()` function uses `Path()` to find the location of resolv.conf,
which may be different.

While at it, also changed some `t.Fatalf()` to `t.Errorf()`, and renamed
some variables for clarity.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:49 +02:00
Sebastiaan van Stijn
55d18b7db9
libnetwork/resolvconf: use []byte for hash instead of string
After my last change, I noticed that the hash is used as a []byte in most
cases (other than tests). This patch updates the type to use a []byte, which
(although unlikely very important) also improves performance:

Compared to the previous version:

    benchstat new.txt new2.txt
    name         old time/op    new time/op    delta
    HashData-10     128ns ± 1%     116ns ± 1%   -9.77%  (p=0.000 n=20+20)

    name         old alloc/op   new alloc/op   delta
    HashData-10      208B ± 0%       88B ± 0%  -57.69%  (p=0.000 n=20+20)

    name         old allocs/op  new allocs/op  delta
    HashData-10      3.00 ± 0%      2.00 ± 0%  -33.33%  (p=0.000 n=20+20)

And compared to the original version:

    benchstat old.txt new2.txt
    name         old time/op    new time/op    delta
    HashData-10     201ns ± 1%     116ns ± 1%  -42.39%  (p=0.000 n=18+20)

    name         old alloc/op   new alloc/op   delta
    HashData-10      416B ± 0%       88B ± 0%  -78.85%  (p=0.000 n=20+20)

    name         old allocs/op  new allocs/op  delta
    HashData-10      6.00 ± 0%      2.00 ± 0%  -66.67%  (p=0.000 n=20+20)

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:49:47 +02:00
Sebastiaan van Stijn
630fc3839e
libnetwork/resolvconf: simplify hashData() and improve performance
The code seemed overly complicated, requiring a reader to be constructed,
where in all cases, the data was already available in a variable. This patch
simplifies the utility to not require a reader, which also makes it a bit
more performant:

    go install golang.org/x/perf/cmd/benchstat@latest
    GO111MODULE=off go test -run='^$' -bench=. -count=20 > old.txt
    GO111MODULE=off go test -run='^$' -bench=. -count=20 > new.txt

    benchstat old.txt new.txt
    name         old time/op    new time/op    delta
    HashData-10     201ns ± 1%     128ns ± 1%  -36.16%  (p=0.000 n=18+20)

    name         old alloc/op   new alloc/op   delta
    HashData-10      416B ± 0%      208B ± 0%  -50.00%  (p=0.000 n=20+20)

    name         old allocs/op  new allocs/op  delta
    HashData-10      6.00 ± 0%      3.00 ± 0%  -50.00%  (p=0.000 n=20+20)

A small change was made in `Build()`, which previously returned the resolv.conf
data, even if the function failed to write it. In the new variation, `nil` is
consistently returned on failures.

Note that in various places, the hash is not even used, so we may be able to
simplify things more after this.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-04-26 22:47:23 +02:00
Sebastiaan van Stijn
49de15cdcc
libnetwork/resolvconf: removed unused GetIfChanged() and GetLastModified()
These functions were used in 63a7ccdd23, which was
part of Docker v1.5.0 and v1.6.0, but removed in Docker v1.7.0 when the network
stack was replaced with libnetwork in d18919e304.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2022-09-22 13:58:34 +02:00
Sebastiaan van Stijn
58413c15cb
update to golang 1.19
also ran gofmt with go1.19

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2022-09-07 15:27:16 +02:00
Sebastiaan van Stijn
52c1a2fae8
gofmt GoDoc comments with go1.19
Older versions of Go don't format comments, so committing this as
a separate commit, so that we can already make these changes before
we upgrade to Go 1.19.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2022-07-08 19:56:23 +02:00
Eng Zer Jun
c55a4ac779
refactor: move from io/ioutil to io and os package
The io/ioutil package has been deprecated in Go 1.16. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2021-08-27 14:56:57 +08:00
Sebastiaan van Stijn
d215d3477b
libnetwork/resolvconf: remove README.md
This information was already documented in the package's GoDoc, so
no need to repeat it.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2021-08-20 00:35:43 +02:00
Sebastiaan van Stijn
572498be56
move pkg/ioutils.HashData() to libnetwork/resolvconf
It's the only location it's used, so we might as well move it there.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2021-08-20 00:35:39 +02:00
Sebastiaan van Stijn
c21be64e1a
libnetwork: remove resolvconf/dns package
The IsLocalhost utility was not used, which only leaves the IsIPv4Localhost
utility.

Go's "net" package provides a `IsLoopBack()` check, but it checks for both
IPv4 and IPv6 loopback interfaces. We likely should also do IPv6 here, but
that's better left for a separate change, so instead, I replicated the IPv4
bits from Go's net.IP.IsLoopback().

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2021-08-20 00:35:34 +02:00
Sebastiaan van Stijn
c9ba301a49
libnetwork: move resolvconf consts into the resolvconf package
This allows using the package without having to import the "types" package,
and without having to consume github.com/ishidawataru/sctp.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2021-08-20 00:23:43 +02:00
Sebastiaan van Stijn
427ad30c05
libnetwork: remove unused "testutils" imports
Perhaps the testutils package in the past had an `init()` function to set up
specific things, but it no longer has. so these imports were doing nothing.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2021-08-18 14:20:37 +02:00
Brian Goff
4b981436fe Fixup libnetwork lint errors
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2021-06-01 23:48:32 +00:00
Brian Goff
72c4a7b496 Fix issues running libnetwork tests.
libnetwork does different stuff depending on if you are running the
tests in a container or not... without telling it we are in a container
a bunch of the tests actually fail.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2021-06-01 22:14:41 +00:00
Brian Goff
a0a473125b Fix libnetwork imports
After moving libnetwork to this repo, we need to update all the import
paths for libnetwork to point to docker/docker/libnetwork instead of
docker/libnetwork.
This change implements that.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2021-06-01 21:51:23 +00:00
Euan Harris
84414583f0 gofmt: Fix formatting warnings
Signed-off-by: Euan Harris <euan.harris@docker.com>
2019-06-26 16:54:31 +01:00
Tibor Vass
c575631528 resolvconf: use /run/systemd/resolve/resolv.conf if systemd-resolved manages DNS
Signed-off-by: Tibor Vass <tibor@docker.com>
2019-06-04 04:50:37 +00:00
Flavio Crisciani
55ad3ef1a4 Fix handling of the resolv.conf
Leverage what is it passed from the daemon
Fix check about the host networking

Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
2018-07-24 10:18:10 -07:00
Derek McGowan
710e0664c4 Update logrus to v1.0.1
Fix case sensitivity issue
Update docker and runc vendors

Signed-off-by: Derek McGowan <derek@mcgstyle.net>
2017-08-07 11:20:47 -07:00
Alessandro Boch
53c84ac767 Fix GetNameServerAsCIDR
- the function is broken as it does not strip the
  zone id from an IPv6 nameserver address, and it
  returns the IPv6 address with /32

Signed-off-by: Alessandro Boch <aboch@docker.com>
2017-01-26 01:34:07 -08:00
Alessandro Boch
6dc6fb703b Merge pull request #1595 from sanimej/host
Add support in embedded DNS server for host loopback resolver
2017-01-05 12:18:48 -08:00
Santhosh Manohar
bf832ec2a7 Add embedded DNS server support for host loopback resolver
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-12-22 14:34:13 -08:00
Santhosh Manohar
3776604aab Correct regexp to match v6 addresses with zone ID
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-12-11 13:29:51 -08:00
allencloud
a1ed5b7be2 fix nits in comments and log
Signed-off-by: allencloud <allen.sun@daocloud.io>
2016-10-29 19:35:18 +08:00
Jana Radhakrishnan
b0d046a1af Remove all netlink/osl deps from ipam/ipamutils
Currently ipam/ipamutils has a bunch of dependencies
in osl and netlink which makes the ipam/ipamutils harder
to use independently with other applications. This PR
modularizes ipam/ipamutils into a standalone package
with no OS level dependencies.

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
2016-04-10 11:05:39 -07:00
Santhosh Manohar
30ef9bcf4a Retain V6 DNS server in resolv.conf; use only V4 servers for fallback
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-01-19 00:06:19 -08:00
Abhishek Chanda
0ce2a2dba0 Fix regex for IPv6
Only match strings which end with ::1

Fixes #830

Signed-off-by: Abhishek Chanda <abhishek.becs@gmail.com>
2015-12-30 00:22:44 +05:30
Mr C0B
e5d44569fb fix the regexp for matching an ip address 2015-10-04 01:10:25 -07:00
David Calavera
cc02894a50 Move test specific functions to a testutils package.
This way we won't vendor test related functions in docker anymore.
It also moves netns related functions to a new ns package to be able to
call the ns init function in tests. I think this also helps with the
overall package isolation.

Signed-off-by: David Calavera <david.calavera@gmail.com>
2015-09-07 13:33:28 -04:00
Alessandro Boch
ef659c9049 Fix resolv.conf and hosts handling in sandbox
Two issues:
- container resolv.conf getting regenerated even when no dns configs are passed
- updateHosts should be skipped for host networking mode
- incorrect check on dnsOptions

Signed-off-by: Alessandro Boch <aboch@docker.com>
2015-09-01 17:22:28 -07:00
Tim Hockin
27296caeb8 Add DNS 'options' support
This is needed to expose DNS options like 'ndots' into containers.

https://github.com/docker/docker/issues/14069

Signed-off-by: Tim Hockin <thockin@google.com>
2015-08-28 09:19:33 -07:00
Alessandro Boch
fd43ee1323 Introduce Sandbox entity
- Maps 1 to 1 with container's networking stack
- It holds container's specific nw options which
  before were incorrectly owned by Endpoint.
- Sandbox creation no longer coupled with Endpoint Join,
  sandbox and endpoint have now separate lifecycle.
- LeaveAll naturally replaced by Sandbox.Delete
- some pkg and file renaming in order to have clear
  mapping between structure name and entity ("sandbox")
- Revisited hosts and resolv.conf handling
- Removed from JoinInfo interface capability of setting hosts and resolv.conf paths
- Changed etchosts.Build() to first write the search domains and then the nameservers

Signed-off-by: Alessandro Boch <aboch@docker.com>
2015-08-27 11:19:02 -07:00
Alessandro Boch
f16db2c3ad Remove pkg directory
- As recommended by Docker committers.
- Will introduce internal directory when go supports it

Signed-off-by: Alessandro Boch <aboch@docker.com>
2015-05-16 16:12:13 -07:00