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community.general/plugins/modules/snap.py
patchback[bot] 9a14980ca7
[PR #8411/ec886203 backport][stable-9] multiple modules: use new vardict in module (#8419) 
multiple modules: use new vardict in module (#8411)

* use new vardict in module

* add changelog frag

* Update changelogs/fragments/8411-locale-gen-vardict.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* set use_old_vardict to false in snap

* set use_old_vardict to false in cpanm

* set use_old_vardict to false in django mod helper

* set use_old_vardict to false in gconftool2_info

* set use_old_vardict to false in kernel_blacklist

* set use_old_vardict to false in mksysb

* set use_old_vardict to false in pipx_info

* set use_old_vardict to false in snap_alias

* update chglog frag

* fix typo

---------

Co-authored-by: Felix Fontein <felix@fontein.de>
(cherry picked from commit ec886203fc)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
2024-05-26 14:13:46 +02:00

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (c) 2021, Alexei Znamensky (russoz) <russoz@gmail.com>
# Copyright (c) 2021, Marcus Rickert <marcus.rickert@web.de>
# Copyright (c) 2018, Stanislas Lange (angristan) <angristan@pm.me>
# Copyright (c) 2018, Victor Carceler <vcarceler@iespuigcastellar.xeill.net>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = '''
---
module: snap
short_description: Manages snaps
description:
- Manages snaps packages.
extends_documentation_fragment:
- community.general.attributes
attributes:
check_mode:
support: full
diff_mode:
support: none
options:
name:
description:
- Name of the snaps to be installed.
- Any named snap accepted by the C(snap) command is valid.
- >
Notice that snap files might require O(dangerous=true) to ignore the error
"cannot find signatures with metadata for snap".
required: true
type: list
elements: str
state:
description:
- Desired state of the package.
- >
When O(state=present) the module will use C(snap install) if the snap is not installed,
and C(snap refresh) if it is installed but from a different channel.
default: present
choices: [ absent, present, enabled, disabled ]
type: str
classic:
description:
- Confinement policy. The classic confinement allows a snap to have
the same level of access to the system as "classic" packages,
like those managed by APT. This option corresponds to the C(--classic) argument.
This option can only be specified if there is a single snap in the task.
type: bool
required: false
default: false
channel:
description:
- Define which release of a snap is installed and tracked for updates.
This option can only be specified if there is a single snap in the task.
- If not passed, the C(snap) command will default to V(stable).
- If the value passed does not contain the C(track), it will default to C(latest).
For example, if V(edge) is passed, the module will assume the channel to be V(latest/edge).
- See U(https://snapcraft.io/docs/channels) for more details about snap channels.
type: str
required: false
options:
description:
- Set options with pattern C(key=value) or C(snap:key=value). If a snap name is given, the option will be applied
to that snap only. If the snap name is omitted, the options will be applied to all snaps listed in O(name). Options will
only be applied to active snaps.
required: false
type: list
elements: str
version_added: 4.4.0
dangerous:
description:
- Install the given snap file even if there are no pre-acknowledged signatures for it,
meaning it was not verified and could be dangerous.
type: bool
required: false
default: false
version_added: 7.2.0
author:
- Victor Carceler (@vcarceler) <vcarceler@iespuigcastellar.xeill.net>
- Stanislas Lange (@angristan) <angristan@pm.me>
seealso:
- module: community.general.snap_alias
'''
EXAMPLES = '''
# Install "foo" and "bar" snap
- name: Install foo
community.general.snap:
name:
- foo
- bar
# Install "foo" snap with options par1=A and par2=B
- name: Install "foo" with options
community.general.snap:
name:
- foo
options:
- par1=A
- par2=B
# Install "foo" and "bar" snaps with common option com=A and specific options fooPar=X and barPar=Y
- name: Install "foo" and "bar" with options
community.general.snap:
name:
- foo
- bar
options:
- com=A
- foo:fooPar=X
- bar:barPar=Y
# Remove "foo" snap
- name: Remove foo
community.general.snap:
name: foo
state: absent
# Install a snap with classic confinement
- name: Install "foo" with option --classic
community.general.snap:
name: foo
classic: true
# Install a snap with from a specific channel
- name: Install "foo" with option --channel=latest/edge
community.general.snap:
name: foo
channel: latest/edge
'''
RETURN = '''
classic:
description: Whether or not the snaps were installed with the classic confinement
type: bool
returned: When snaps are installed
channel:
description: The channel the snaps were installed from
type: str
returned: When snaps are installed
cmd:
description: The command that was executed on the host
type: str
returned: When changed is true
snaps_installed:
description: The list of actually installed snaps
type: list
returned: When any snaps have been installed
snaps_removed:
description: The list of actually removed snaps
type: list
returned: When any snaps have been removed
options_changed:
description: The list of options set/changed in format C(snap:key=value).
type: list
returned: When any options have been changed/set
version_added: 4.4.0
'''
import re
import json
import numbers
from ansible.module_utils.common.text.converters import to_native
from ansible_collections.community.general.plugins.module_utils.module_helper import StateModuleHelper
from ansible_collections.community.general.plugins.module_utils.snap import snap_runner
class Snap(StateModuleHelper):
NOT_INSTALLED = 0
CHANNEL_MISMATCH = 1
INSTALLED = 2
__disable_re = re.compile(r'(?:\S+\s+){5}(?P<notes>\S+)')
__set_param_re = re.compile(r'(?P<snap_prefix>\S+:)?(?P<key>\S+)\s*=\s*(?P<value>.+)')
__list_re = re.compile(r'^(?P<name>\S+)\s+\S+\s+\S+\s+(?P<channel>\S+)')
module = dict(
argument_spec={
'name': dict(type='list', elements='str', required=True),
'state': dict(type='str', default='present', choices=['absent', 'present', 'enabled', 'disabled']),
'classic': dict(type='bool', default=False),
'channel': dict(type='str'),
'options': dict(type='list', elements='str'),
'dangerous': dict(type='bool', default=False),
},
supports_check_mode=True,
)
use_old_vardict = False
@staticmethod
def _first_non_zero(a):
for elem in a:
if elem != 0:
return elem
return 0
def __init_module__(self):
self.runner = snap_runner(self.module)
# if state=present there might be file names passed in 'name', in
# which case they must be converted to their actual snap names, which
# is done using the names_from_snaps() method calling 'snap info'.
self.vars.set("snapinfo_run_info", [], output=(self.verbosity >= 4))
self.vars.set("status_run_info", [], output=(self.verbosity >= 4))
self.vars.set("status_out", None, output=(self.verbosity >= 4))
self.vars.set("run_info", [], output=(self.verbosity >= 4))
if self.vars.state == "present":
self.vars.set("snap_names", self.names_from_snaps(self.vars.name))
status_var = "snap_names"
else:
status_var = "name"
self.vars.set("status_var", status_var, output=False)
self.vars.set("snap_status", self.snap_status(self.vars[self.vars.status_var], self.vars.channel), output=False, change=True)
self.vars.set("snap_status_map", dict(zip(self.vars.name, self.vars.snap_status)), output=False, change=True)
def __quit_module__(self):
self.vars.snap_status = self.snap_status(self.vars[self.vars.status_var], self.vars.channel)
if self.vars.channel is None:
self.vars.channel = "stable"
def _run_multiple_commands(self, commands, actionable_names, bundle=True, refresh=False):
results_cmd = []
results_rc = []
results_out = []
results_err = []
results_run_info = []
state = "refresh" if refresh else self.vars.state
with self.runner(commands + ["name"]) as ctx:
if bundle:
rc, out, err = ctx.run(state=state, name=actionable_names)
results_cmd.append(commands + actionable_names)
results_rc.append(rc)
results_out.append(out.strip())
results_err.append(err.strip())
results_run_info.append(ctx.run_info)
else:
for name in actionable_names:
rc, out, err = ctx.run(state=state, name=name)
results_cmd.append(commands + [name])
results_rc.append(rc)
results_out.append(out.strip())
results_err.append(err.strip())
results_run_info.append(ctx.run_info)
return (
'; '.join([to_native(x) for x in results_cmd]),
self._first_non_zero(results_rc),
'\n'.join(results_out),
'\n'.join(results_err),
results_run_info,
)
def convert_json_subtree_to_map(self, json_subtree, prefix=None):
option_map = {}
if not isinstance(json_subtree, dict):
self.do_raise("Non-dict non-leaf element encountered while parsing option map. "
"The output format of 'snap set' may have changed. Aborting!")
for key, value in json_subtree.items():
full_key = key if prefix is None else prefix + "." + key
if isinstance(value, (str, float, bool, numbers.Integral)):
option_map[full_key] = str(value)
else:
option_map.update(self.convert_json_subtree_to_map(json_subtree=value, prefix=full_key))
return option_map
def convert_json_to_map(self, json_string):
json_object = json.loads(json_string)
return self.convert_json_subtree_to_map(json_object)
def retrieve_option_map(self, snap_name):
with self.runner("get name") as ctx:
rc, out, err = ctx.run(name=snap_name)
if rc != 0:
return {}
result = out.splitlines()
if "has no configuration" in result[0]:
return {}
try:
option_map = self.convert_json_to_map(out)
return option_map
except Exception as e:
self.do_raise(
msg="Parsing option map returned by 'snap get {0}' triggers exception '{1}', output:\n'{2}'".format(snap_name, str(e), out))
def names_from_snaps(self, snaps):
def process_one(rc, out, err):
res = [line for line in out.split("\n") if line.startswith("name:")]
name = res[0].split()[1]
return [name]
def process_many(rc, out, err):
# This needs to be "\n---" instead of just "---" because otherwise
# if a snap uses "---" in its description then that will incorrectly
# be interpreted as a separator between snaps in the output.
outputs = out.split("\n---")
res = []
for sout in outputs:
res.extend(process_one(rc, sout, ""))
return res
def process(rc, out, err):
if len(snaps) == 1:
check_error = err
process_ = process_one
else:
check_error = out
process_ = process_many
if "warning: no snap found" in check_error:
self.do_raise("Snaps not found: {0}.".format([x.split()[-1]
for x in out.split('\n')
if x.startswith("warning: no snap found")]))
return process_(rc, out, err)
names = []
if snaps:
with self.runner("info name", output_process=process) as ctx:
try:
names = ctx.run(name=snaps)
finally:
self.vars.snapinfo_run_info.append(ctx.run_info)
return names
def snap_status(self, snap_name, channel):
def _status_check(name, channel, installed):
match = [c for n, c in installed if n == name]
if not match:
return Snap.NOT_INSTALLED
if channel and match[0] not in (channel, "latest/{0}".format(channel)):
return Snap.CHANNEL_MISMATCH
else:
return Snap.INSTALLED
with self.runner("_list") as ctx:
rc, out, err = ctx.run(check_rc=True)
list_out = out.split('\n')[1:]
list_out = [self.__list_re.match(x) for x in list_out]
list_out = [(m.group('name'), m.group('channel')) for m in list_out if m]
self.vars.status_out = list_out
self.vars.status_run_info = ctx.run_info
return [_status_check(n, channel, list_out) for n in snap_name]
def is_snap_enabled(self, snap_name):
with self.runner("_list name") as ctx:
rc, out, err = ctx.run(name=snap_name)
if rc != 0:
return None
result = out.splitlines()[1]
match = self.__disable_re.match(result)
if not match:
self.do_raise(msg="Unable to parse 'snap list {0}' output:\n{1}".format(snap_name, out))
notes = match.group('notes')
return "disabled" not in notes.split(',')
def _present(self, actionable_snaps, refresh=False):
self.changed = True
self.vars.snaps_installed = actionable_snaps
if self.check_mode:
return
params = ['state', 'classic', 'channel', 'dangerous'] # get base cmd parts
has_one_pkg_params = bool(self.vars.classic) or self.vars.channel != 'stable'
has_multiple_snaps = len(actionable_snaps) > 1
if has_one_pkg_params and has_multiple_snaps:
self.vars.cmd, rc, out, err, run_info = self._run_multiple_commands(params, actionable_snaps, bundle=False, refresh=refresh)
else:
self.vars.cmd, rc, out, err, run_info = self._run_multiple_commands(params, actionable_snaps, refresh=refresh)
self.vars.run_info = run_info
if rc == 0:
return
classic_snap_pattern = re.compile(r'^error: This revision of snap "(?P<package_name>\w+)"'
r' was published using classic confinement')
match = classic_snap_pattern.match(err)
if match:
err_pkg = match.group('package_name')
msg = "Couldn't install {name} because it requires classic confinement".format(name=err_pkg)
else:
msg = "Ooops! Snap installation failed while executing '{cmd}', please examine logs and " \
"error output for more details.".format(cmd=self.vars.cmd)
self.do_raise(msg=msg)
def state_present(self):
self.vars.set_meta('classic', output=True)
self.vars.set_meta('channel', output=True)
actionable_refresh = [snap for snap in self.vars.name if self.vars.snap_status_map[snap] == Snap.CHANNEL_MISMATCH]
if actionable_refresh:
self._present(actionable_refresh, refresh=True)
actionable_install = [snap for snap in self.vars.name if self.vars.snap_status_map[snap] == Snap.NOT_INSTALLED]
if actionable_install:
self._present(actionable_install)
self.set_options()
def set_options(self):
if self.vars.options is None:
return
actionable_snaps = [s for s in self.vars.name if self.vars.snap_status_map[s] != Snap.NOT_INSTALLED]
overall_options_changed = []
for snap_name in actionable_snaps:
option_map = self.retrieve_option_map(snap_name=snap_name)
options_changed = []
for option_string in self.vars.options:
match = self.__set_param_re.match(option_string)
if not match:
msg = "Cannot parse set option '{option_string}'".format(option_string=option_string)
self.do_raise(msg)
snap_prefix = match.group("snap_prefix")
selected_snap_name = snap_prefix[:-1] if snap_prefix else None
if selected_snap_name is not None and selected_snap_name not in self.vars.name:
msg = "Snap option '{option_string}' refers to snap which is not in the list of snap names".format(option_string=option_string)
self.do_raise(msg)
if selected_snap_name is None or (snap_name is not None and snap_name == selected_snap_name):
key = match.group("key")
value = match.group("value").strip()
if key not in option_map or key in option_map and option_map[key] != value:
option_without_prefix = key + "=" + value
option_with_prefix = option_string if selected_snap_name is not None else snap_name + ":" + option_string
options_changed.append(option_without_prefix)
overall_options_changed.append(option_with_prefix)
if options_changed:
self.changed = True
if not self.check_mode:
with self.runner("_set name options") as ctx:
rc, out, err = ctx.run(name=snap_name, options=options_changed)
if rc != 0:
if 'has no "configure" hook' in err:
msg = "Snap '{snap}' does not have any configurable options".format(snap=snap_name)
self.do_raise(msg)
msg = "Cannot set options '{options}' for snap '{snap}': error={error}".format(
options=" ".join(options_changed), snap=snap_name, error=err)
self.do_raise(msg)
if overall_options_changed:
self.vars.options_changed = overall_options_changed
def _generic_state_action(self, actionable_func, actionable_var, params):
actionable_snaps = [s for s in self.vars.name if actionable_func(s)]
if not actionable_snaps:
return
self.changed = True
self.vars[actionable_var] = actionable_snaps
if self.check_mode:
return
self.vars.cmd, rc, out, err, run_info = self._run_multiple_commands(params, actionable_snaps)
self.vars.run_info = run_info
if rc == 0:
return
msg = "Ooops! Snap operation failed while executing '{cmd}', please examine logs and " \
"error output for more details.".format(cmd=self.vars.cmd)
self.do_raise(msg=msg)
def state_absent(self):
self._generic_state_action(lambda s: self.vars.snap_status_map[s] != Snap.NOT_INSTALLED, "snaps_removed", ['classic', 'channel', 'state'])
def state_enabled(self):
self._generic_state_action(lambda s: not self.is_snap_enabled(s), "snaps_enabled", ['classic', 'channel', 'state'])
def state_disabled(self):
self._generic_state_action(self.is_snap_enabled, "snaps_disabled", ['classic', 'channel', 'state'])
def main():
Snap.execute()
if __name__ == '__main__':
main()
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