It turns out dnf argparse can't handle negative numbers without "=".
It's actually documented in the man page
--latest-limit <number> ... If <number> is negative skip <number>
of latest packages. If a negative number is used use syntax
--latest-limit=<number>
But who reads that :) This started failing with Fedora 26
Change-Id: I884af94c07fa11b010f69863047a04711b14f21e
We expect LC_ALL for non-C locales to be working inside
images, so always install glibc-locale for openSUSE.
Change-Id: I8fe92773e377539070d9d9fe2960a6202bb80a18
In preparation for promoting the openSUSE jobs to voting ones we should
use the OpenStack mirrors. As such, the opensuse elements are modified
to make use of the DIB_DISTRIBUTION_MIRROR variable which is normally
exported by the openstack-ci-mirrors element.
Change-Id: Ie588c1c1eec13190cfb2ec718ba51f8c9878283f
We added the DIB_distro_DISTRIBUTION_MIRROR arguments with
I92964b17ec3e47cf97e3a3091f054b2a205ac768 as a way that we could
source a list of mirrors and then have the distro elements choose
which one applied to them.
However, this hasn't worked out to be so useful. The
openstack-ci-mirrors element is working as a mirror setup script -- it
translates the openstack CI mirror list variables into the generic
"DIB_DISTRIBUTION_MIRROR" as appropriate for each distro's build.
Also, it turns out there's other things that need to be done, such as
turning off gpg checking, which mean the idea of "just export
variables" hasn't turned out as valid ... you need actual code
involved to get it right.
AFAICT we never actually documented these, and they do not seem to be
in use. They have caused considerable confusion when dealing with new
platforms as we try to keep consistency. Remove them.
[1] http://codesearch.openstack.org/?q=DIB_.*_DISTRIBUTION_MIRROR&i=nope&files=&repos=
Change-Id: Ifc4ab700631ffdfbe790068558f670f9a11dde5e
The code in mkfs correctly extends the command line with a '-n' for
vfat but does not currently do it for fat. This means that mkfs for
fat ends up with a '-L' which is what you'd do for everything like
ext[234].
The change just treats fat like vfat in the one place where this check
is required.
Change-Id: If65dfd949acdadff33a564640fb42ea73026a786
Closes-Bug: #1703063
The purpose of the openSUSE element is to build openSUSE distribution
based images, so an additional community repo shouldn't be pulled into
the image. In addition the dkms dependency is blacklisted for SUSE
in the dkms element anyway, so this should be a noop.
Change-Id: I0aa06d9f4f110546032f910e3361840693d02de7
On Power systems console should be added the kernel command line
in the following order: 'console=tty0 console=hvc0'.
The first one is the graphical console. The last one is the serial
console. The kernel enables all the consoles pointed through the
kernel command line. However, only the last one will receive
input/output during kernel boot. All the other consoles will be
enabled after the boot.
Change-Id: I0069f608e0ab104d3778954e033fb82ed5ea7693
We replace the base resolv.conf with an "outside" copy so that
resolving works when we're in the chroot.
Installing resolvconf package modifies the in-chroot resolv.conf to a
symlink (to /var/run) which it wants maintained in the final image.
We have the existing "immutable" check for a created resolv.conf file,
but no eqivalent for a symlink.
This adds a check to see if the resolv.conf is a symlink and leave it
alone if it is, assuming it has been re-created in the chroot.
I have tested this with ubuntu-minimal+resolvconf with
dhcp-all-interfaces and the system seems to work with resolvconf
working correctly.
Change-Id: Idd5a26e9d55979bd951577d5b098ed4bfba91ad3
The python3 package actually contains some core modules (like the xml
one) which are not present in the python3-base on which is pulled by
the python3-devel package. As such, it's best to have it installed
similar to python-xml for python2.
Change-Id: I5cd5d1127ae62d6753c2ace44965179c5400bb9a
In order to support {CentOS,RHEL}7 for building cloud images we need to
handle the differences in grub packaging from Ubuntu. We also need to
populate the defualt location for cloud images for CentOS builds.
Change-Id: Ie0d82ff21a42b08c4cb94b7a5635f80bfabf684e
When a download redirector redirects to a broken mirror, timeout
quickly rather than waiting until the overall job is being timed out.
Change-Id: If7eb63d406aaf61f71aa9203cf708c474aa63fd0
The 'packages' variable already contains the packages we need so
use it instead of duplicating the packages.
Change-Id: Id22e1862f9654e66252d03a0fed9839cf004d750
Several people have popped up in IRC recently with failures in these
elements. Without Python 2.7 available in the image they are
unsupported (OpenStack hasn't supported it for a long time). Remove
these to avoid further confusion.
The centos/centos7 DISTRO split that has happened with centos-minimal
is unfortunate but I don't think it helps to rename centos7/rhel7 ATM.
To summarise; DISTRO=centos7 means image based build,
DISTRO=centos && DIB_RELEASE=7 means the minimal build.
In the future, I think it is important that the minimal builds and
image builds set the same DISTRO. This reflects that "upper" layers
shouldn't care about the exact building of the lower layers. I see
CentOS 8 going one of two ways
1) the changes are so significant, we start separate centos8 /
centos8-minimal elements. They both set DISTRO=centos8 (and
DIB_RELEASE to point-release maybe?). This means we have to update
all "if DISTRO == centos || DISTRO == centos7" branches to also check
for "centos8". Evenually (!) "centos" goes away for versioned DISTRO
only
2) we restore centos element with DISTRO=centos and DIB_RELEASE=8, and
centos-minimal remains the same. This means we have to audit all "if
DISTRO == centos" calls to make sure they're appropriate for version 8
(stick a "&& DIB_RELEASE=7" on them all basically).
I'm not sure we can fully decide until we start to see excatly how the
distro switching/matching bits look, but (2) is consistent with Ubuntu
and probably the preferred solution.
Some "rhel" parts have been cleaned up. More could be done in
rhel-common, but given our lack of coverage of that I'd prefer to
leave it for now.
Change-Id: I6ea784116ef59ca22878c8512c963f29c815a00a
The image download tests have long been too unreliable for the gate.
We need to cache the base images similar to how devstack caches it's
testing images. Let's move them to non-voting jobs for the time
being.
This means that the gate jobs are now all based on "-minimal" and are
using infra mirrors. Unfortunately, there is still some unreliability
because we currently have issues with infra mirrors being very slow
after AFS updates, leading to job timeouts. But we're on the right
path...
Also, I noticed we don't have tests of the "ubuntu" image-download
based tests, which were tacitly being tested by apt-sources before we
moved that to -minimal. Add simple tests for these.
Change-Id: Ie33ee49656872467ef68d753210032156bb6b2cb
In a system where python2 is not installed and /usr/bin/python is not
linked then the cleanup process will fail trying to invoke the python
script. Use the previously determined DIB_PYTHON_EXEC if it's available.
Change-Id: I128292808ccef92cc1803988b35caae5aa6fa541
This was previously defined as python2-devel (which is what rhel uses),
but the actual package name is python-devel. See:
https://software.opensuse.org/package/python-devel
Change-Id: Id61e5b05772d10c32b33d3e70cb64d5ebdcba6e4
I'm uncertain as to why this is using the "fedora" element for testing
... but it requires downloading the fedora .qcow on every test which
has shown to be unreliable. An easy thing to do is to switch it to
fedora-minimal; that will only involve downloads from local mirrors in
the gate.
Add redhat-rpm-config for minimal. I admit I have not fully gone
through why this is not pulled in. It's been an issue since
I459f2203fa145049dda185da952813118193d573 and there's all sorts of
bugs.
Change-Id: I37458e3926dae32a259bd5aa9efc645561b029a0
fedora/centos-minimal don't obey DIB_DISTRIBUTION_MIRROR currently. I
don't really want them too -- we want to be able to separate the
mirrors used during the build process from those embedded into the
final image. Add DIB_YUM_MINIMAL_BOOTSTRAP_REPOS which is a directory
with repo files to use during the install.
This introduces setup-gate-mirrors.sh which is intended to setup
repo/sources/whatever files in the openstack gate that point to the
local region mirror. It pulls the info from the mirror_info.sh script
on each CI node.
The openstack-ci-mirrors element is updated to export these variables.
elements are updated to depend on it. Tests are restored
Change-Id: I7604fc4d41cb1483be16b8d628a24e8fc764f515
This adds "openstack-ci-mirrors" element which performs various
settings to get builds using local mirrors. As a first step, we
convert ubuntu-minimal jobs
The main trick is that since infra mirrors are created with rerepo
they are not signed (they are recreated, not cloned, and not signing
is seen as a feature in that it deters external use). So we need to
instruct debootstrap to ignore signing and also turn it off for
in-chroot apt. Other than that, the existing DIB_DISTRIBUTION_MIRROR
works to redirect installs.
Remove "restricted" as it's not mirrored, and I don't think we want it
in here by default.
(I think DIB_DISTRIBUTION_MIRROR is a bit of an anti-pattern, because
it leaves the mirrors in the final image -- just because you use them
to build, doesn't mean you want them at runtime). But we don't need
to fix that now, and we don't use any created images.)
This pauses fedora testing until the next change, which moves to using
local mirrors for testing on fedora/centos
Change-Id: I778bd05a1e615c27edf1c9f0a1409119a6b3a850
The gate is currently extremley unstable, and these two issues are
causing most of the problems. We need to commit them atomically so we
can get anything moving again
---
The gate is very unstable downloading the ubuntu tarballs from
upstream at the moment. Move this to ubuntu-minimal which, in a later
change will source files from our local mirror.
We need a caching mechanism for these large files to avoid this
instability. This is future work for the various image-based jobs.
---
Move debian to default skip lists
I don't know if it's mirrors being worked hard for the Stretch
release, but this is constantly failing the gate. I will move this to
the -nv extras job
I am working on having the voting job use local mirrors for
everything. Unfortunately debian infra mirrors don't have stretch yet
and we need to do some fiddling to get "stable" available. Once we
have all this, we can consider making it voting again.
Change-Id: Iaf7b3888ef06c7aef63cbf76a94b33f96bc9c5c2
We introduced the "settle" in
I90103b59357edebbac7a641e8980cb282d37561b thinking that maybe kpartx
had not finished writing the partition. This probably wasn't a bad
first assumption, since we used to have this -- but is seems
insufficient.
The other failiure here seems to be if kpartx hasn't actually seen the
updated partition table in the image, so it has correctly (in it's
mind) not mounted the partition.
Looking at strace of fdisk run manually on a loopback, it will do a
fsync on the raw device after writing and then a global sync as it
exits.
This replicates this; we flush and fsync in mbr.py in the exit handler
after writing the partition, before closing the file (i've updated one
of the unit tests to double-check the call). In the partitioning.py
caller we execute a sync call too.
Since it does seem unlikely the "-s" option of kpartx is not working,
I've removed the udev settle work-around too.
Change-Id: Ia77a0ffe4c76854b326ed76490479d9c691b49aa
Partial-Bug: #1698337
Debian Stretch released as stable recently, and the init system is
less tightly specified in the base dependencies (for some info, see
[1]). It seems, probably unintentionally, that in the previous
release systemd-sysv was brought in by debootstrap, but that is no
longer happening.
Add systemd as an early dependency of debian-minimal.
Remove the package-installs.yaml as that happens too late (other
things need to know the init system to write out service files, etc
and probe for systemd utils before package-installs). As mentioned, I
do not believe the "only install systemd on testing" idea was actually
working here, because it was being brought in during the initial
debootstrap.
Update some documentation to explain what's going on
[1] https://lists.debian.org/debian-boot/2015/05/msg00156.html
Change-Id: Id67c0cf08728407d234976f9807d3bd71d12f758
There was a race in diskimage-builder where the mkfs call after a
kpartx -avs for the loop device would fail because the device was
not yet ready. This adds a udevadm settle call after the kpartx
to make sure the udev event queue has cleared.
Change-Id: I90103b59357edebbac7a641e8980cb282d37561b
Closes-Bug: #1698337
This adds a devstack-inspired output filter to standardise
timestamping.
Currently, python tools timestamp always (timestamp setup in
logging_config.py) but all the surrounding bash does not.
We have extra timestamps added in run_functests.sh for our own
purposes to get the bash timestamps; but this ends up giving us
double-timestamps for the python bits. Additionally, callers such as
nodepool capture our output and put their own timestamps on it, and
again have the double-timestamps.
This uses a lightly modified outfilter.py from devstack to standardise
this.
All output is run through this filter, which will timestamp it. I
have removed the places where we double-timestamp -- logging_config.py
and the prefix in dib-run-parts.
An env option is added to turn timestamps off completely (does not
seem worth taking up a command-line option for). For callers like
nodepool, they can set this and will just have their own timestamps as
they collect the lines.
Since all logging is going through outfilter, it's easy to add a
--logfile option. I think this will be quite handy; personally I'm
always redirecting dib runs to files for debugging.
I've also added a "quiet" option. I think this could be useful in
run_tests.sh if we were to start logging the output of each test to
individual files. This would be much easier to deal with than the
very large log files we get (especially if we wanted to turn on
parallel running...)
Change-Id: I202e1cb200bde17f6d7770cf1e2710bbf4cca64c
Using the newly exposed variables from the prior change, install the
ppc bootloader to the boot partition, not the underlying loopback
device.
Change-Id: I0918e8df8797d6dbabf7af618989ab7f79ee9580
Currently we only export "image-block-device" which is the loopback
device (/dev/loopX) for the underlying image. This is the device we
install grub to (from inside the chroot ...)
This is ok for x86, but is insufficient for some platforms like PPC
which have a separate boot partition. They do not want to install to
the loop device, but do things like dd special ELF files into special
boot partitions.
The first problem seems to be that in level1/partitioning.py we have a
whole bunch of different paths that either call partprobe on the loop
device, or kpartx. We have _all_part_devices_exist() that gates the
kpartx for unknown reasons. We have detach_loopback() that does not
seem to remove losetup created devices. I don't think this does
cleanup if it uses kpartx correctly. It is extremley unclear what's
going to be mapped where.
This moves to us *only* using kpartx to map the partitions of the loop
device. We will *not* call partprobe and create the /dev/loopXpN
devices and will only have the devicemapper nodes kpartx creates.
This seems to be best. Cleanup happens inside partitioning.py.
practice. Deeper thinking about this, and more cleanup of the
variables will be welcome.
This adds "image-block-devices" (note the extra "s") which exports all
the block devices with name and path. This is in a string format that
can be eval'd to an array (you can't export arrays).
This is then used in a follow-on
(I0918e8df8797d6dbabf7af618989ab7f79ee9580) to pick the right
partition on PPC.
Change-Id: If8e33106b4104da2d56d7941ce96ffcb014907bc
Currently we pass a reference to a global "rollback" list to create()
to keep rollback functions. Other nodes don't need to know about
global rollback state, and by passing by reference we're giving them
the chance to mess it up for everyone else.
Add a "add_rollback()" function in NodeBase for create() calls to
register rollback calls within themselves. As they hit rollback
points they can add a new entry. lambda v arguments is much of a
muchness -- but this is similar to the standard atexit() call so with
go with that pattern. A new "rollback()" call is added that the
driver will invoke on each node as it works its way backwards in case
of failure.
On error, nodes will have rollback() called in reverse order (which
then calls registered rollbacks in reverse order).
A unit test is added to test rollback behaviour
Change-Id: I65214e72c7ef607dd08f750a6d32a0b10fe97ac3
Keep track of the mount-point ordering in a state variable, rather
than a global. This path is tested by existing unit tests.
Note a prior change inserted the MountNode objects directly into a
list in self.state, which makes sorting quite easy as it can just
implement __lt__. Unfortunately we still json dump the state, and
thus we can't have aribtrary objects in it (future work may be to
check keys inserted into the status object...). So we have to do a
bit of wrangling with tuple lists and comparision functions here, but
it's not too bad.
Change-Id: I0c51e0c53c4efdb7a65ab0efe09a6780cb1affa8
As we add file-systems, add them to global state and check the labels
are uniqiue. Add a unit test and remove the old global value.
Bonus fixup to the length check, and a test for that too.
Change-Id: I0f5a96f687c92e000afc9c98a26c49c4b1d3f28d
With I468dbf5134947629f125504513703d6f2cdace59 each node has a
reference to the global state object. This means it gets pickled into
the node-list, which is loaded for later calls. There is no need to
reload the state.json it and pass it for later cmd_* calls, as the
nodes can see it via the unpickled self.state
Change-Id: I9e2f8910f17599d92ee33e7df8e36d8ed4d44575
Making the global state reference a defined part of the node makes
some parts of the block device processing easier and removes the need
for other global values.
The state is passed to PluginNodeBase.__init__() and expected to be
passed into all nodes as they are created. NodeBase.__init__() is
updated with the new paramater 'state'.
The parameter is removed from the create() call as nodes can simply
reference it at any point as "self.state".
This is similar to 1cdc8b20373c5d582ea928cfd7334469ff36dbce, except it
is based on I68840594a34af28d41d9522addcfd830bd203b97 which loads the
node-list from pickled state for later cmd_* calls. Thus we only
build the state *once*, at cmd_create() time as we build the node
list.
Change-Id: I468dbf5134947629f125504513703d6f2cdace59
Currently the later cmd_* calls -- umount, cleanup, delete -- all
recreate the node graph by parsing the config file using
create_graph()
There is some need, however, to have a sense of global state when
building the node list. The problem is, this is a one time operation
-- we do not want to rebuild that state for these later calls (see the
"loaded" checks in proposed
Ic3b805f9258128d5233b21ff25579c03487c7fcc).
An insight here seems to be that these cmd_* calls do not actually
want to re-parse the configuration file and rebuild the node list;
they just want to walk the node list in reverse with the state as
provided after cmd_create().
So, rather than re-creating the node list, we might as well just
pickle it, save it to disk along side the state dictionary dump and
reload it for cmd_*.
After this, I think we can safely have PluginBase.__init__() be passed
the state. We will now know that this will only be called once,
during initial creation.
Change-Id: I68840594a34af28d41d9522addcfd830bd203b97
You can't pickle a static method reference which complicates being
able to save the node graph when the "rollback" call-back wants to
hold references to these functions. The outer module (localoop.py) is
small anyway, so from an organisation point of view the difference is
minimal. Since these are really only called with parameters from the
containing class, they could be class methods with no parameters, at
the small expense of having to fiddle the mbr test-case a bit.
Change-Id: I6f9592a4295abe1b41294b79828bc2f3c2da01c6
The supported ppc ${ARCH} is "ppc64el" (at least in the gate testing
...) so move the file to that, so gets picked up by
block_device_create_config_file
Change-Id: I9273f35cdbfb0a62404461cbc1df9b2a92155fb0
Something seems to be going on with the ppc matching in the gate test.
Small updates to see what's going on...
Change-Id: Ie48cd4ce1f983a58932a577a43746240f6866936
Because we append the function/line info after debug lines in the gate
logs, the pretty-print ends up not looking all that pretty. Pad it.
Change-Id: Ice013428342614300cd51e8b7be56e79b75b31fc
This is code motion with some small changes to make follow-on's
easier.
test_blockdevice_mbr.py is moved alongside the other tests. It is
modified slightly to use the standard base class and remove a lot of
repeated test setup; a fixture is used for the tempdir (so it doesn't
have to be torn-down, and is removed properly on error) and the partx
args are moved into the setUp() so each test doesn't have to create
it. No functional change. renamed test_mbr.py for shortness.
test_blockdevice_utils.py is merged with existing test_utils.py. No
change to the tests.
test_blockdevice.py is removed. It isn't doing anything currently; to
work it will need to take an approach based more on mocking of calls
that require elevated permissions. It's in history if we need it.
Change-Id: I87b1ea94afaaa0b44e6a57b9d073f95a63a04cf0
assertRaisesRegexp was renamed to assertRaisesRegex in Py3.2
For more details, please check:
https://docs.python.org/3/library/
unittest.html#unittest.TestCase.assertRaisesRegex
Change-Id: I705c958c0dbf1daa409ed29ccbc038426298c306
Closes-Bug: #1436957
package-installs.yaml is installing python-dev, not python2-dev,
so we need to adjust the mapping accordingly.
In addition, zypper-minimal used an dpkg specific package name,
while there is a SUSE equivalent (and zypper-minimal is anyway
SUSE family specific)
Change-Id: Ia9dd061fa46a514781808d62e5e93b03f75c6745
Ubuntu 12.04 LTS reached its regular End of Life on April 28, 2017.
Depends-On: I5e145095a10db112bb27516bfe652d2cdc052a61
Change-Id: I64af4c5183d77a75dcd062895d19b0a1330c8da8
While plugins treat the state as just a dictionary, it's nice for the
driver functions to keep state related functions encapsulated in the
state object singleton. Wrap the internal state dictionary so we can
pass the BlockDeviceState directly without dereferencing.
Change-Id: Ic0193c64d645ed1312f898cbfef87841f460799c
Currently we keep a global list of mount-points defined in the
configuration and automatically setup dependencies between mount nodes
based on their global "mount order" (i.e. higher directories mount
first).
The current method for achieving this is roughly to add the mount
points to a dictionary indexed my mount-point, then at "get_edge()"
call build the sorted list ... unless it has already been built
because this gets called for every node.
It seems much simpler to simply keep a sorted list of the
MountPointNode objects as we add them. We don't need to implement a
sorting algorithm then, we can just use sort() and implement __lt__
for the nodes.
I believe the existing mount-order unit testing is sufficient; I'm
struggling to find a valid configuration where the mount-order is
*not* correctly specified in the configuration graph.
Change-Id: Idc05cdf42d95e230b9906773aa2b4a3b0f075598
This element has not been functioning correctly for some time due to
an incorrect path to select-boot-kernel-initrd (should be /usr/local/bin).
The dracut-regenerate element can be used to regenerate dracut ramdisks
and is more flexible than this element.
Change-Id: I33d555ffd4a92b2948b2ea4a66b151f0422ccb8c
Closes-Bug: #1688546
This patch removes the ccache handling from the base element. For
mostly all systems this was never used at all.
This is working towards the removal of the base element from DIB
Change-Id: Ieb16ef612ebd98470993dcd6f55b3a22d37084ba
Signed-off-by: Andreas Florath <andreas@florath.net>
In python3, the standard out data returned by
subprocess.Popen.communicate() will in most cases be bytes rather than a
string and must therefore be decoded.
Without this fix we hit the following error:
TypeError: a bytes-like object is required, not 'str'
Change-Id: I6d75f867ebfdb925970c3397175214b9050d7632
Closes-Bug: #1694463
Currently openSUSE 42.3 has entered feature freeze mode
so it is a good point in time to verify that 42.3 builds
are working successfully. Also test opensuse-minimal for
platforms that support it (need working zypper package)
Change-Id: I4c613e1e68cb7375c29d544bbf70b5da9bf21414
A couple of things going on, but I think it makes sense to do them
atomically.
The NodeBase.create() argument "results" is the global state
dictionary that will be saved to "state.json", and re-loaded in later
phases and passed to them as the argument "state". So for
consistency, call this argument "state" (this fits with the change out
to start building the state dictionary earlier in the
PluginBase.__init__() calls).
Since the "state" is a pretty important part of how everything works,
move it into a separate object. This is treated as essentially a
singleton. It bundles it nicely together for some added
documentation [1].
We move instantiation of this object out of the generic
BlockDevice.__init__() call and into the actual cmd_* drivers. This
is because there's two distinct instantiation operations -- creating a
new state (during cmd_create) and loading an existing state (other
cmd_*). This is also safer -- since we know the cmd_* arguments are
looking for an existing state.json, we will fail if it somehow goes
missing.
To more fully unit test this, some testing plugins and new
entry-points are added. These add known state values which we check
for. These should be a good basis for further tests.
[1] as noted, we could probably do some fun things in the future like
make this implement a dictionary and have some saftey features like
r/o keys.
Change-Id: I90eb711b3e9b1ce139eb34bdf3cde641fd06828f
As described in pep282 [1], the variable part of a log message
should be passed in via parameter. In this case the parameters
are evaluated only when they need to be.
This patch fixes (unifies) this for DIB.
A check using pylint was added that this kind of passing parameters to
the logging subsystem is enforced in future. As a blueprint a similar
(stripped-down) approach from cinder [2] was used.
[1] https://www.python.org/dev/peps/pep-0282/
[2] https://github.com/openstack/cinder/blob/master/tox.ini
Change-Id: I2d7bcc863e4e9583d82d204438b3c781ac99824e
Signed-off-by: Andreas Florath <andreas@florath.net>
This is an initial creation of pylint with a basic indent checker.
Small issues corrected. Job added to gate with
Ib554a284e92583cc1d6a5c2219b3922852ca4c73
Change-Id: I7e24d8348db3aef79e1395d12692199a1f80161a
Co-Authored-By: Andreas Florath <andreas@florath.net>
This is consistent with how dpkg based images are configured
and minimizes the nodepool images drastically (avoid installing
texlive for example)
Change-Id: I98fb31bc0e06869e9770fae3dbd62f0d86acb879
This was suggested in a review comment in
I8a5d62a076a5a50597f2f1df3a8615afba6dadb2. It works out quite nicely
because the BlockDevice() driver now doesn't need to know anything
about stevedore or plugins, and just works on the node list. It also
simplifies the unit testing by not having to call create_graph through
a BlockDevice object.
Change-Id: I98512f6cf42e256d2ea8225a0b496d303bf357b8
This completes the transitions started in
Ic5a61365ef0132476b11bdbf1dd96885e91c3cb6
The new file plugin.py is the place to start with this change. The
abstract base classes PluginBase and NodeBase are heavily documented.
NodeBase essentially replaces Digraph.Node
The changes in level?/*.py make no functional changes, but are just
refactoring to implement the plugin and node classes consistently.
Additionally we have added asserts during parsing & generation to
ensure plugins are implemented PluginBase, and get_nodes() is always
returning NodeBase objects for the graph.
Change-Id: Ie648e9224749491260dea65d7e8b8151a6824b9c
This switches the code to use networkx for the digraph implementation.
Note that the old implementation specifically isn't removed in this
change -- for review clarity. It will be replaced by a base class
that defines things properly to the API described below.
Plugins return a node object with three functions
get_name() : return the unique name of this node
get_nodes() : return a list of nodes for insertion into the graph.
Usually this is just "self". Some special things like partitioning
add extra nodes at this point, however.
get_edges() : return a tuple of two lists; edges_from and edges_to
As you would expect the first is a list of node names that points to
us, and the second is a list of node names we point to. Usually
this is only populated as ([self.base],[]) -- i.e. our "base" node
points to us. Some plugins, such as mounting, create links both to
and from themselves, however.
Plugins have been updated, some test cases added (error cases
specifically)
Change-Id: Ic5a61365ef0132476b11bdbf1dd96885e91c3cb6
This moves to a more generic config parser that doesn't have plugins
parsing part of the tree.
I understand why it ended up that way; we have "partitions" key which
has special semantics compared to others keys and there was a desire
to keep it isolated from core tree->graph code. But this isn't really
isolated; you have to reverse-engineer several module-crossing
boundaries, extras classes and repetitive recursive functions.
Ultimately, plugins should have access to the node graph, but not
participate in configuration parsing. This way we ensure that plugins
can't invent new methods of configuration parsing.
Note: unit tests produce the same tree -> graph conversion as the old
method. i.e. this is not intended to have a functional change.
Change-Id: I8a5d62a076a5a50597f2f1df3a8615afba6dadb2
Add a range of unit-testing for configuration parsing, graph
generation and mount-point generation. Unfortunately there's some
global variable hacks, and some stubs, but it's a start.
Change-Id: I9e4f950c2c2ea656fc0c1a14594059fb4c62fa35
There's an increasing amount of pydoc based documentation. Output the
module reference and link it into the developers main page.
One fixup to the rst needed
Change-Id: I1d43a1fe1c735eb4559e3d2b40834d1c8115c586
