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"ovs-external-ids.py"
This example script is used by our NM-ci. Make it work also with libnm
versions that don't yet support NM.SettingOvsOtherConfig.
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- only printing the scan list is not gonna cut it. It's usually stale,
and we need to request a new scan.
- don't hard-code the GEnum and GFlags values that we understand. We
have libnm, which provides us some meta information about the data.
Use it.
- Some code cleanup.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1531
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See `man ovs-vswitchd.conf.db` for documentation of "other_config" keys.
https://bugzilla.redhat.com/show_bug.cgi?id=2151455
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Fixes: 3ce3ed4c92fb ('examples: improve finding last checkpoint in "checkpoint.py"')
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lgtm.com warns about this. Avoid it.
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Complained by lgtm.com.
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lgtm.com says:
Call to function format_exception with too few arguments; should be no
fewer than 3.
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Add a fire-and-forget function to wait for shutdown to be complete.
It's not entirely trivial to ensure all resources of NMClient are
cleaned up. That matters only if NMClient uses a temporary GMainContext
that the user wants to release while the application continues. For
example, to do some short-lived operations an a worker thread. It's
not trivial also because glib provides no convenient API to integrate
a GMainContext in another GMainContext. We have that code as
nm_utils_g_main_context_create_integrate_source(), so add a helper
function to allow the user to do this.
The function allows to omit the callback, in which case the caller
wouldn't know when shutdown is complete. That would still be useful
however, when integrating the client's context into the caller's
context, so that the client's context gets automatically iterated
until completion.
The following test script will run out of file descriptors,
when wait_shutdown() is not used:
#!/bin/python
import gi
gi.require_version("NM", "1.0")
from gi.repository import NM, GLib
for i in range(1200):
print(f">>>{i}")
ctx = GLib.MainContext()
ctx.push_thread_default()
nmc = NM.Client.new()
ctx.pop_thread_default()
def cb(unused, result, i):
try:
NM.Client.wait_shutdown_finish(result)
except Exception:
# cannot happen
assert False
else:
print(f">>>>> {i} complete")
nmc.wait_shutdown(True, None, cb, i)
while GLib.MainContext.default().iteration(False):
pass
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While iterating the context (once), multiple sources can be dispatched.
So if we get a timeout and shortly after the weak-ref callback, then
we still need to honor the weak-ref.
In particular, because weak_ref.unref() is not safe to do after
the object was already destroyed. So we need to be correct about
tracking destruction.
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1290
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1247
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This is a python example. We should do nice things, like
using max() for finding the maximum, instead of sorting.
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"examples/python/gi/checkpoint.py" is not only an example. It's also a
useful script for testing checkpoints.
Support a "--last" argument to specify the last checkpoint created.
Otherwise, when you are using this example from a test script, it
can be cumbersome to find the right checkpoint point.
Also, rename "client" and "nm_client" variables to "nmc". The purpose of
using the same variable name for the same thing is readability, but also
it works better when copy+paste snippets into the Python REPL.
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Recent python-black (22.0) dropped support for Python 2 and thus fail
for those files. Make the examples Python3 compatible.
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1043
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We use clang-format for automatic formatting of our source files.
Since clang-format is actively maintained software, the actual
formatting depends on the used version of clang-format. That is
unfortunate and painful, but really unavoidable unless clang-format
would be strictly bug-compatible.
So the version that we must use is from the current Fedora release, which
is also tested by our gitlab-ci. Previously, we were using Fedora 34 with
clang-tools-extra-12.0.1-1.fc34.x86_64.
As Fedora 35 comes along, we need to update our formatting as Fedora 35
comes with version "13.0.0~rc1-1.fc35".
An alternative would be to freeze on version 12, but that has different
problems (like, it's cumbersome to rebuild clang 12 on Fedora 35 and it
would be cumbersome for our developers which are on Fedora 35 to use a
clang that they cannot easily install).
The (differently painful) solution is to reformat from time to time, as we
switch to a new Fedora (and thus clang) version.
Usually we would expect that such a reformatting brings minor changes.
But this time, the changes are huge. That is mentioned in the release
notes [1] as
Makes PointerAligment: Right working with AlignConsecutiveDeclarations. (Fixes https://llvm.org/PR27353)
[1] https://releases.llvm.org/13.0.0/tools/clang/docs/ReleaseNotes.html#clang-format
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The previous implementation did some ratelimiting, namely how many parallel
ActivateConnection D-Bus calls are in fly. This way we are able to kick off
many parallel calls, but the activations themselves were not ratelimited.
Rework the code. Now there are two rate limits (that can be set via environment
variables):
NUM_PARALLEL_STARTING
NUM_PARALLEL_IN_PROGRESS
This allows more control about how much is happening in parallel. If we are
going to activate 1000 profiles, then it matters that we do things in parallel,
but not everything at the same time.
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lgtm.com complains about this. Avoid the warning.
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It's an example for how to use libnm and asynchronous API.
But it's also a script I will use to test activating many
profiles in parallel.
Also add a test script that creates many veth interfaces and connection
profiles. So now you can do:
sudo NUM_DEVS=100 contrib/scripts/test-create-many-device-setup.sh setup
./examples/python/gi/nm-up-many.py c-a{1..100}
and cleanup with
nmcli connection down c-a{1..100}
sudo contrib/scripts/test-create-many-device-setup.sh cleanup
Of course, be careful to do this on your production machine.
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lgtm.com warns about unqualified "except". This catches any "BaseException",
when we really only should handle "Exception" here.
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lgtm.com also complained about "connection_after" being unused. This
hopefully works around that warning.
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They are flagged by lgtm.com. Avoid the warning by dropping unused
includes.
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First of all, the "os.setuid()" call is never reached. lgtm.com warns about
that, and warnings are annoying because they require investigation.
This code is only in the example, so that the user would understand that
they should edit the source and set the desired UID. But you can only
call setuid() if you have CAP_SETUID, so commonly this anyway doesn't
work -- unless you are root already, and then you actually don't need
it either.
Let's drop this code from the example.
Maybe this example really should be dropped. Does the "dbus" python
module even still work? Doesn't for me...
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input() in Python2 evaluated the string and was thus unsafe. On
Python2, the right choice is raw_input. In Python3, input does
what raw_input did.
Work around this.
The main "problem" is that lgtm.com flags this as error. The fix
in the example is not important, but getting a low number of warnings
is.
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- add more error handling and free/unref data.
- split code in 3 functions: vpn_connection_import(),
connection_add() and main(). These steps are mostly
independent, and having them in separate functions
makes their separation clearer.
- handle error from nm_client_add_connection_async() to
exit program with non zero exit code.
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../examples/C/glib/vpn-import-libnm.c: In function main:
../examples/C/glib/vpn-import-libnm.c:72:1: error: control reaches end of non-void function [-Werror=return-type]
}
^
Fixes: 905f9975d286 ('example: importing vpn with libnm')
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/789
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/781
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Like with "libnm-core/", split "libnm/" into different directories for
the public headers, for the implementation and for the helper "aux"
library.
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"libnm-core/" is rather complicated. It provides a static library that
is linked into libnm.so and NetworkManager. It also contains public
headers (like "nm-setting.h") which are part of public libnm API.
Then we have helper libraries ("libnm-core/nm-libnm-core-*/") which
only rely on public API of libnm-core, but are themself static
libraries that can be used by anybody who uses libnm-core. And
"libnm-core/nm-libnm-core-intern" is used by libnm-core itself.
Move "libnm-core/" to "src/". But also split it in different
directories so that they have a clearer purpose.
The goal is to have a flat directory hierarchy. The "src/libnm-core*/"
directories correspond to the different modules (static libraries and set
of headers that we have). We have different kinds of such modules because
of how we combine various code together. The directory layout now reflects
this.
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Fedora 33's version of python-black is the authoritative version we
use for formatting -- note that formatting may look different depending
on the black version.
Recently, the package was updated to 20.8~b1-1.fc33, which treats
these lines different.
Work around that by adjusting the code so that both older and current
versions of python black behave the same.
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/630
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These SPDX license identifiers are deprecated ([1]). Update them.
[1] https://spdx.org/licenses/
sed \
-e '1 s%^/\* SPDX-License-Identifier: \(GPL-2.0\|LGPL-2.1\)+ \*/$%/* SPDX-License-Identifier: \1-or-later */%' \
-e '1,2 s%^\(--\|#\|//\) SPDX-License-Identifier: \(GPL-2.0\|LGPL-2.1\)+$%\1 SPDX-License-Identifier: \2-or-later%' \
-i \
$(git grep -l SPDX-License-Identifier -- \
':(exclude)shared/c-*/' \
':(exclude)shared/n-*/' \
':(exclude)shared/systemd/src' \
':(exclude)src/systemd/src')
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All our source code is UTF-8. We don't need to mark it as such.
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The python example is (also) used to test the feature. That is because
currently nmcli does not yet have support for ovs.external-ids and this
API is only accessible via D-Bus (or a tool like this example).
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And example script for getting and setting OVS external-ids.
Since currently there is no nmcli support for these properties yet,
the script becomes more interesting.
This "example" is rather long, and it showcases less the usage of
libnm (which is rather trivial, with respect to configuring
NMSettingOvsExternalIDs). Instead, it aims to provide a useful
command line tool for debugging. Hence, it's mostly concerned with
an elaborate command line syntax and useful print output.
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Signed-off-by: Frederic Martinsons <frederic.martinsons@sigfox.com>
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Our coding style recommends C style comments (/* */) instead of C++
(//). Also, systemd (which we partly fork) uses C style comments for
the SPDX-License-Identifier.
Unify the style.
$ sed -i '1 s#// SPDX-License-Identifier: \([^ ]\+\)$#/* SPDX-License-Identifier: \1 */#' -- $(git ls-files -- '*.[hc]' '*.[hc]pp')
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sed -i \
-e 's/^'$'\t'' \*/ */g' \
-e 's/^'$'\t\t'' \*/ */g' \
-e 's/^'$'\t\t\t'' \*/ */g' \
-e 's/^'$'\t\t\t\t'' \*/ */g' \
-e 's/^'$'\t\t\t\t\t'' \*/ */g' \
-e 's/^'$'\t\t\t\t\t\t'' \*/ */g' \
-e 's/^'$'\t\t\t\t\t\t\t'' \*/ */g' \
$(git ls-files -- '*.[hc]')
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Run:
./contrib/scripts/nm-code-format.sh -i
./contrib/scripts/nm-code-format.sh -i
Yes, it needs to run twice because the first run doesn't yet produce the
final result.
Signed-off-by: Antonio Cardace <acardace@redhat.com>
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