A collection of python libraries for the Validation Framework
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# Copyright 2020 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
import logging
import os
import json
import yaml
from validations_libs.ansible import Ansible as v_ansible
from validations_libs.group import Group
from validations_libs.validation_logs import ValidationLogs, ValidationLog
from validations_libs import constants
from validations_libs import utils as v_utils
LOG = logging.getLogger(__name__ + ".validation_actions")
class ValidationActions(object):
"""An object for encapsulating the Validation Actions
This class allows the possibility to execute the following actions:
- List the available validations
- Show detailed information about one validation
- Show the available parameters for one or multiple validations
- Show the list of the validation groups
- Run one or multiple validations, by name(s) or by group(s)
- Show the history of the validations executions
"""
def __init__(self, validation_path=None, group=None):
self.log = logging.getLogger(__name__ + ".ValidationActions")
self.validation_path = (validation_path if validation_path
else constants.ANSIBLE_VALIDATION_DIR)
def list_validations(self, group=None):
"""Get a list of the validations selected by group
membership. With their names and group membership information.
This is used to print table from python ``Tuple`` with ``PrettyTable``.
:param group: Group or multiple groups of validations.
Additional groups have to be separated by comma.
:type group: `string`
:return: Column names and a list of the selected validations
:rtype: `tuple`
.. code:: text
----------------+--------------------------+----------------------+
| ID | Name | Groups |
+---------------+--------------------------+----------------------+
| validation1 | Name of the validation1 | ['group1'] |
| validation2 | Name of the validation2 | ['group1', 'group2'] |
| validation3 | Name of the validation3 | ['group4] |
+---------------+--------------------------+----------------------+
:Example:
>>> path = "/foo/bar"
>>> action = ValidationActions(validation_path=path)
>>> results = action.list_validations()
>>> print(results)
(('ID', 'Name', 'Groups'),
[('validation1', 'Name of the validation1', ['group1']),
('validation2', 'Name of the validation2', ['group1', 'group2'])])
"""
self.log = logging.getLogger(__name__ + ".list_validations")
validations = v_utils.parse_all_validations_on_disk(
self.validation_path, group)
self.log.debug(
"Parsed {} validations.".format(len(validations))
)
return_values = [
(val.get('id'), val.get('name'), val.get('groups'))
for val in validations]
column_names = ('ID', 'Name', 'Groups')
return (column_names, return_values)
def show_validations(self, validation,
log_path=constants.VALIDATIONS_LOG_BASEDIR):
"""Display detailed information about a Validation
:param validation: The name of the validation
:type validation: `string`
:param log_path: The absolute path of the validations logs
:type log_path: `string`
:return: The detailed information for a validation
:rtype: `dict`
:Example:
>>> path = "/foo/bar"
>>> validation = 'foo'
>>> action = ValidationActions(validation_path=path)
>>> results = action.show_validations(validation=validation)
>>> print(results)
{
'Description': 'Description of the foo validation',
'Groups': ['group1', 'group2'],
'ID': 'foo',
'Last execution date': None,
'Name': 'Name of the validation foo',
'Number of execution': 'Total: 0, Passed: 0, Failed: 0',
'Parameters': {'foo1': bar1}
}
"""
self.log = logging.getLogger(__name__ + ".show_validations")
# Get validation data:
vlog = ValidationLogs(log_path)
data = v_utils.get_validations_data(validation, self.validation_path)
if not data:
msg = "Validation {} not found in the path: {}".format(
validation,
self.validation_path)
raise RuntimeError(msg)
logfiles = vlog.get_logfile_content_by_validation(validation)
data_format = vlog.get_validations_stats(logfiles)
data.update(data_format)
return data
def _skip_hosts(self, skip_list, playbook, limit_hosts=None):
"""Check Ansible Hosts and return an updated limit_hosts
:param skip_list: The list of the validation to skip
:type validation_name: ``dict``
:param playbook: The name of the playbook
:type base_dir: ``string``
:param limit_hosts: Limit the execution to the hosts.
:type limit_hosts: ``string``
:return the limit hosts according the skip_list or None if the
validation should be skipped on ALL hosts.
:example
limit_hosts = 'cloud1,cloud2'
skip_list = {'xyz': {'hosts': 'cloud1',
'reason': None,
'lp': None}
}
>>> _skip_hosts(skip_list, playbook, limit_hosts='cloud1,cloud2')
'cloud2,!cloud1'
"""
hosts = skip_list[playbook].get('hosts')
if hosts == 'ALL' or hosts is None:
return None
else:
_hosts = ['!{}'.format(hosts)]
if limit_hosts:
# check if skipped hosts is already in limit host
_hosts.extend([limit for limit in limit_hosts.split(',')
if hosts not in limit])
return ','.join(_hosts)
def _skip_playbook(self, skip_list, playbook, limit_hosts=None):
"""Check if playbook is in the ski plist
:param skip_list: The list of the validation to skip
:type validation_name: ``dict``
:param playbook: The name of the playbook
:type base_dir: ``string``
:param limit_hosts: Limit the execution to the hosts.
:type limit_hosts: ``string``
:return a tuple of playbook and hosts
:example
skip_list = {'xyz': {'hosts': 'cloud1',
'reason': None,
'lp': None}
}
If playbook not in skip list:
>>> _skip_playbook(skip_list, 'foo', None)
('foo', None)
If playbook in the skip list, but with restriction only on
host cloud1:
>>> _skip_playbook(skip_list, 'xyz', None)
('xyz', '!cloud1')
If playbook in the skip list, and should be skip on ALL hosts:
skip_list = {'xyz': {'hosts': 'ALL',
'reason': None,
'lp': None}
}
>>> _skip_playbook(skip_list, 'xyz', None)
(None, None)
"""
if skip_list:
if playbook in skip_list.keys():
_hosts = self._skip_hosts(skip_list, playbook,
limit_hosts)
if _hosts:
return playbook, _hosts
else:
return None, _hosts
return playbook, limit_hosts
def _retrieve_latest_results(self, logs, history_limit):
"""Retrieve the most recent validation results.
Previously retrieved logs are sorted in ascending order,
with the last time the file was modified serving as a key.
Finally we take the last `n` logs, where `n` == `history_limit`
and return them while discarding the time information.
"""
history_limit = min(history_limit, len(logs))
logs = sorted(
[(os.stat(path).st_mtime, path) for path in logs],
key=lambda path: path[0])
return [path[1] for path in logs[-history_limit:]]
def run_validations(self, validation_name=None, inventory='localhost',
group=None, extra_vars=None, validations_dir=None,
extra_env_vars=None, ansible_cfg=None, quiet=True,
workdir=None, limit_hosts=None, run_async=False,
base_dir=constants.DEFAULT_VALIDATIONS_BASEDIR,
log_path=None, python_interpreter=None,
skip_list=None,
callback_whitelist=None,
output_callback='validation_stdout',
ssh_user=None):
"""Run one or multiple validations by name(s) or by group(s)
:param validation_name: A list of validation names
:type validation_name: ``list``
:param inventory: Either proper inventory file, or a comma-separated
list. (Defaults to ``localhost``)
:type inventory: ``string``
:param group: A list of group names
:type group: ``list``
:param extra_vars: Set additional variables as a Dict or the absolute
path of a JSON or YAML file type.
:type extra_vars: Either a Dict or the absolute path of JSON or YAML
:param validations_dir: The absolute path of the validations playbooks
:type validations_dir: ``string``
:param extra_env_vars: Set additional ansible variables using an
extravar dictionary.
:type extra_env_vars: ``dict``
:param ansible_cfg: Path to an ansible configuration file. One will be
generated in the artifact path if this option is
None.
:type ansible_cfg: ``string``
:param quiet: Disable all output (Defaults to ``True``)
:type quiet: ``Boolean``
:param workdir: Location of the working directory
:type workdir: ``string``
:param limit_hosts: Limit the execution to the hosts.
:type limit_hosts: ``string``
:param run_async: Enable the Ansible asynchronous mode
(Defaults to ``False``)
:type run_async: ``boolean``
:param base_dir: The absolute path of the validations base directory
(Defaults to
``constants.DEFAULT_VALIDATIONS_BASEDIR``)
:type base_dir: ``string``
:param log_path: The absolute path of the validations logs directory
:type log_path: ``string``
:param python_interpreter: Path to the Python interpreter to be
used for module execution on remote targets,
or an automatic discovery mode (``auto``,
``auto_silent`` or the default one
``auto_legacy``)
:type python_interpreter: ``string``
:param callback_whitelist: Comma separated list of callback plugins.
Custom output_callback is also whitelisted.
(Defaults to ``None``)
:type callback_whitelist: ``list`` or ``string``
:param output_callback: The Callback plugin to use.
(Defaults to 'validation_stdout')
:type output_callback: ``string``
:param skip_list: List of validations to skip during the Run form as
{'xyz': {'hosts': 'ALL', 'reason': None, 'lp': None}
}
(Defaults to 'None')
:type skip_list: ``dict``
:return: A list of dictionary containing the informations of the
validations executions (Validations, Duration, Host_Group,
Status, Status_by_Host, UUID and Unreachable_Hosts)
:rtype: ``list``
:param ssh_user: Ssh user for Ansible remote connection
:type ssh_user: ``string``
:Example:
>>> path = "/u/s/a"
>>> validation_name = ['foo', 'bar']
>>> actions = ValidationActions(validation_path=path)
>>> results = actions.run_validations(inventory='localhost',
validation_name=validation_name,
quiet=True)
>>> print(results)
[{'Duration': '0:00:02.285',
'Host_Group': 'all',
'Status': 'PASSED',
'Status_by_Host': 'localhost,PASSED',
'UUID': '62d4d54c-7cce-4f38-9091-292cf49268d7',
'Unreachable_Hosts': '',
'Validations': 'foo'},
{'Duration': '0:00:02.237',
'Host_Group': 'all',
'Status': 'PASSED',
'Status_by_Host': 'localhost,PASSED',
'UUID': '04e6165c-7c33-4881-bac7-73ff3f909c24',
'Unreachable_Hosts': '',
'Validations': 'bar'}]
"""
self.log = logging.getLogger(__name__ + ".run_validations")
playbooks = []
validations_dir = (validations_dir if validations_dir
else self.validation_path)
if group:
self.log.debug('Getting the validations list by group')
try:
validations = v_utils.parse_all_validations_on_disk(
validations_dir, group)
for val in validations:
playbooks.append(val.get('id') + '.yaml')
except Exception as e:
raise(e)
elif validation_name:
validation_name = v_utils.convert_data(validation_name)
playbooks = v_utils.get_validations_playbook(validations_dir,
validation_name,
group)
if not playbooks or len(validation_name) != len(playbooks):
p = []
for play in playbooks:
p.append(os.path.basename(os.path.splitext(play)[0]))
unknown_validation = list(set(validation_name) - set(p))
msg = "Validation {} not found in {}.".format(
unknown_validation, validations_dir)
raise RuntimeError(msg)
else:
raise RuntimeError("No validations found")
self.log.debug('Running the validations with Ansible')
results = []
for playbook in playbooks:
# Check if playbook should be skipped and on which hosts
play_name = os.path.basename(os.path.splitext(playbook)[0])
_play, _hosts = self._skip_playbook(skip_list,
play_name,
limit_hosts)
if _play:
validation_uuid, artifacts_dir = v_utils.create_artifacts_dir(
dir_path=log_path, prefix=os.path.basename(playbook))
run_ansible = v_ansible(validation_uuid)
_playbook, _rc, _status = run_ansible.run(
workdir=artifacts_dir,
playbook=playbook,
base_dir=base_dir,
playbook_dir=validations_dir,
parallel_run=True,
inventory=inventory,
output_callback=output_callback,
callback_whitelist=callback_whitelist,
quiet=quiet,
extra_vars=extra_vars,
limit_hosts=_hosts,
extra_env_variables=extra_env_vars,
ansible_cfg=ansible_cfg,
gathering_policy='explicit',
ansible_artifact_path=artifacts_dir,
log_path=log_path,
run_async=run_async,
python_interpreter=python_interpreter,
ssh_user=ssh_user)
results.append({'playbook': _playbook,
'rc_code': _rc,
'status': _status,
'validations': _playbook.split('.')[0],
'UUID': validation_uuid,
})
else:
self.log.debug('Skipping Validations: {}'.format(playbook))
if run_async:
return results
# Return log results
uuid = [id['UUID'] for id in results]
vlog = ValidationLogs()
return vlog.get_results(uuid)
def group_information(self, groups):
"""Get Information about Validation Groups
This is used to print table from python ``Tuple`` with ``PrettyTable``.
.. code:: text
+----------+--------------------------+-----------------------+
| Groups | Description | Number of Validations |
+----------+--------------------------+-----------------------+
| group1 | Description of group1 | 3 |
| group2 | Description of group2 | 12 |
| group3 | Description of group3 | 1 |
+----------+--------------------------+-----------------------+
:param groups: The absolute path of the groups.yaml file
:type groups: ``string``
:return: The list of the available groups with their description and
the numbers of validation belonging to them.
:rtype: ``tuple``
:Example:
>>> groups = "/foo/bar/groups.yaml"
>>> actions = ValidationActions(constants.ANSIBLE_VALIDATION_DIR)
>>> group_info = actions.group_information(groups)
>>> print(group_info)
(('Groups', 'Desciption', 'Number of Validations'),
[('group1', 'Description of group1', 3),
('group2', 'Description of group2', 12),
('group3', 'Description of group3', 1)])
"""
val_gp = Group(groups)
group = val_gp.get_formated_group
group_info = []
# Get validations number by groups
for gp in group:
validations = v_utils.parse_all_validations_on_disk(
self.validation_path, gp[0])
group_info.append((gp[0], gp[1], len(validations)))
column_name = ("Groups", "Description", "Number of Validations")
return (column_name, group_info)
def show_validations_parameters(self, validation=None, group=None,
output_format='json', download_file=None):
"""
Return Validations Parameters for one or several validations by their
names or their groups.
:param validation: List of validation name(s)
:type validation: `list`
:param group: List of validation group(s)
:type group: `list`
:param output_format: Output format (Supported format are JSON or YAML)
:type output_format: `string`
:param download_file: Path of a file in which the parameters will be
stored
:type download_file: `string`
:return: A JSON or a YAML dump (By default, JSON).
if `download_file` is used, a file containing only the
parameters will be created in the file system.
:exemple:
>>> validation = ['check-cpu', 'check-ram']
>>> group = None
>>> output_format = 'json'
>>> show_validations_parameters(validation, group, output_format)
{
"check-cpu": {
"parameters": {
"minimal_cpu_count": 8
}
},
"check-ram": {
"parameters": {
"minimal_ram_gb": 24
}
}
}
"""
if not validation:
validation = []
if not group:
group = []
supported_format = ['json', 'yaml']
if output_format not in supported_format:
raise RuntimeError("{} output format not supported".format(output_format))
validations = v_utils.get_validations_playbook(
self.validation_path, validation, group)
params = v_utils.get_validations_parameters(validations, validation,
group)
if download_file:
params_only = {}
try:
with open(download_file, 'w') as parameters_file:
for val_name in params.keys():
params_only.update(params[val_name].get('parameters'))
if output_format == 'json':
parameters_file.write(
json.dumps(params_only,
indent=4,
sort_keys=True))
else:
parameters_file.write(
yaml.safe_dump(params_only,
allow_unicode=True,
default_flow_style=False,
indent=2))
self.log.debug(
"Validations parameters file {} saved as {} ".format(
download_file,
output_format))
except (PermissionError, OSError) as error:
self.log.exception(
(
"Exception {} encountered while tring to write "
"a validations parameters file {}"
).format(
error,
download_file))
return params
def show_history(self, validation_ids=None, extension='json',
log_path=constants.VALIDATIONS_LOG_BASEDIR,
history_limit=None):
"""Return validation executions history
:param validation_ids: The validation ids
:type validation_ids: a list of strings
:param extension: The log file extension (Defaults to ``json``)
:type extension: ``string``
:param log_path: The absolute path of the validations logs directory
:type log_path: ``string``
:param history_limit: The number of most recent history logs
to be displayed.
:type history_limit: ``int``
:return: Returns the information about the validation executions
history
:rtype: ``tuple``
:Example:
>>> actions = ValidationActions(constants.ANSIBLE_VALIDATION_DIR)
>>> print(actions.show_history())
(('UUID', 'Validations', 'Status', 'Execution at', 'Duration'),
[('5afb1597-e2a1-4635-b2df-7afe21d00de6',
'foo',
'PASSED',
'2020-11-13T11:47:04.740442Z',
'0:00:02.388'),
('32a5e217-d7a9-49a5-9838-19e5f9b82a77',
'foo2',
'PASSED',
'2020-11-13T11:47:07.931184Z',
'0:00:02.455'),
('62d4d54c-7cce-4f38-9091-292cf49268d7',
'foo',
'PASSED',
'2020-11-13T11:47:47.188876Z',
'0:00:02.285'),
('04e6165c-7c33-4881-bac7-73ff3f909c24',
'foo3',
'PASSED',
'2020-11-13T11:47:50.279662Z',
'0:00:02.237')])
>>> actions = ValidationActions(constants.ANSIBLE_VALIDATION_DIR)
>>> print(actions.show_history(validation_ids=['foo']))
(('UUID', 'Validations', 'Status', 'Execution at', 'Duration'),
[('5afb1597-e2a1-4635-b2df-7afe21d00de6',
'foo',
'PASSED',
'2020-11-13T11:47:04.740442Z',
'0:00:02.388'),
('04e6165c-7c33-4881-bac7-73ff3f909c24',
'foo',
'PASSED',
'2020-11-13T11:47:50.279662Z',
'0:00:02.237')])
"""
vlogs = ValidationLogs(log_path)
if validation_ids:
if not isinstance(validation_ids, list):
validation_ids = [validation_ids]
logs = []
for validation_id in validation_ids:
logs.extend(
vlogs.get_logfile_by_validation(
validation_id))
else:
logs = vlogs.get_all_logfiles(extension)
if history_limit and history_limit < len(logs):
logs = self._retrieve_latest_results(logs, history_limit)
values = []
column_name = ('UUID', 'Validations',
'Status', 'Execution at',
'Duration')
for log in logs:
vlog = ValidationLog(logfile=log)
if vlog.is_valid_format():
for play in vlog.get_plays:
values.append((play['id'], play['validation_id'],
vlog.get_status,
play['duration'].get('start'),
play['duration'].get('time_elapsed')))
return (column_name, values)
def get_status(self, validation_id=None, uuid=None, status='FAILED',
log_path=constants.VALIDATIONS_LOG_BASEDIR):
"""Return validations execution details by status
:param validation_id: The validation id
:type validation_id: ``string``
:param uuid: The UUID of the execution
:type uuid: ``string``
:param status: The status of the execution (Defaults to FAILED)
:type status: ``string``
:param log_path: The absolute path of the validations logs directory
:type log_path: ``string``
:return: A list of validations execution with details and by status
:rtype: ``tuple``
:Example:
>>> actions = ValidationActions(validation_path='/foo/bar')
>>> status = actions.get_status(validation_id='foo'))
>>> print(status)
(['name', 'host', 'status', 'task_data'],
[('Check if debug mode is disabled.',
'localhost',
'FAILED',
{'_ansible_no_log': False,
'action': 'fail',
'changed': False,
'failed': True,
'msg': 'Debug mode is not disabled.'}),
('Check if debug mode is disabled.',
'localhost',
'FAILED',
{'_ansible_no_log': False,
'action': 'fail',
'changed': False,
'failed': True,
'msg': 'Debug mode is not disabled.'}),
('Check if debug mode is disabled.',
'localhost',
'FAILED',
{'_ansible_no_log': False,
'action': 'fail',
'changed': False,
'failed': True,
'msg': 'Debug mode is not disabled.'})])
"""
vlogs = ValidationLogs(log_path)
if validation_id:
logs = vlogs.get_logfile_by_validation(validation_id)
elif uuid:
logs = vlogs.get_logfile_by_uuid(uuid)
else:
raise RuntimeError("You need to provide a validation_id or a uuid")
values = []
column_name = ['name', 'host', 'status', 'task_data']
for log in logs:
vlog = ValidationLog(logfile=log)
if vlog.is_valid_format():
for task in vlog.get_tasks_data:
if task['status'] == status:
for host in task['hosts']:
values.append((task['name'], host, task['status'],
task['hosts'][host]))
return (column_name, values)