mirror of
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552 lines
27 KiB
Python
552 lines
27 KiB
Python
from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.basic import env_fallback
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from ansible.module_utils.urls import Request, SSLValidationError, ConnectionError
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from ansible.module_utils.six.moves.urllib.parse import urlparse, urlencode
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from ansible.module_utils.six.moves.urllib.error import HTTPError
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from ansible.module_utils.six.moves.http_cookiejar import CookieJar
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from ansible.module_utils.six.moves.configparser import ConfigParser, NoOptionError
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from socket import gethostbyname
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import re
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from json import loads, dumps
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from os.path import isfile, expanduser, split, join
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from os import access, R_OK, getcwd
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class ConfigFileException(Exception):
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pass
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class ItemNotDefined(Exception):
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pass
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class TowerModule(AnsibleModule):
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url = None
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honorred_settings = ['host', 'username', 'password', 'verify_ssl', 'oauth_token']
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host = '127.0.0.1'
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username = None
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password = None
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verify_ssl = True
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oauth_token = None
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oauth_token_id = None
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session = None
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cookie_jar = CookieJar()
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authenticated = False
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json_output = {'changed': False}
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config_name = 'tower_cli.cfg'
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def __init__(self, argument_spec, **kwargs):
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args = dict(
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tower_host=dict(required=False, fallback=(env_fallback, ['TOWER_HOST'])),
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tower_username=dict(required=False, fallback=(env_fallback, ['TOWER_USERNAME'])),
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tower_password=dict(no_log=True, required=False, fallback=(env_fallback, ['TOWER_PASSWORD'])),
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validate_certs=dict(type='bool', aliases=['tower_verify_ssl'], required=False, fallback=(env_fallback, ['TOWER_VERIFY_SSL'])),
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tower_oauthtoken=dict(type='str', no_log=True, required=False, fallback=(env_fallback, ['TOWER_OAUTH_TOKEN'])),
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tower_config_file=dict(type='path', required=False, default=None),
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)
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args.update(argument_spec)
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kwargs['supports_check_mode'] = True
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super(TowerModule, self).__init__(argument_spec=args, **kwargs)
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self.load_config_files()
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# Parameters specified on command line will override settings in any config
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if self.params.get('tower_host'):
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self.host = self.params.get('tower_host')
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if self.params.get('tower_username'):
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self.username = self.params.get('tower_username')
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if self.params.get('tower_password'):
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self.password = self.params.get('tower_password')
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if self.params.get('validate_certs') is not None:
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self.verify_ssl = self.params.get('validate_certs')
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if self.params.get('tower_oauthtoken'):
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self.oauth_token = self.params.get('tower_oauthtoken')
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# Perform some basic validation
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if not re.match('^https{0,1}://', self.host):
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self.host = "https://{0}".format(self.host)
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# Try to parse the hostname as a url
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try:
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self.url = urlparse(self.host)
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except Exception as e:
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self.fail_json(msg="Unable to parse tower_host as a URL ({1}): {0}".format(self.host, e))
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# Try to resolve the hostname
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hostname = self.url.netloc.split(':')[0]
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try:
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gethostbyname(hostname)
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except Exception as e:
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self.fail_json(msg="Unable to resolve tower_host ({1}): {0}".format(hostname, e))
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self.session = Request(cookies=self.cookie_jar)
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def load_config_files(self):
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# Load configs like TowerCLI would have from least import to most
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config_files = [join('/etc/tower/', self.config_name), join(expanduser("~"), ".{0}".format(self.config_name))]
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local_dir = getcwd()
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config_files.append(join(local_dir, self.config_name))
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while split(local_dir)[1]:
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local_dir = split(local_dir)[0]
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config_files.insert(2, join(local_dir, self.config_name))
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for config_file in config_files:
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try:
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self.load_config(config_file)
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except ConfigFileException:
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# Since some of these may not exist or can't be read, we really don't care
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pass
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# If we have a specified tower config, load it
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if self.params.get('tower_config_file'):
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try:
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self.load_config(self.params.get('tower_config_file'))
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except ConfigFileException as cfe:
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# Since we were told specifically to load this we want to fail if we have an error
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self.fail_json(msg=cfe)
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def load_config(self, config_path):
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config = ConfigParser()
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# Validate the config file is an actual file
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if not isfile(config_path):
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raise ConfigFileException('The specified config file does not exist')
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if not access(config_path, R_OK):
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raise ConfigFileException("The specified config file can not be read")
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config.read(config_path)
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if not config.has_section('general'):
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self.warn("No general section in file, auto-appending")
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with open(config_path, 'r') as f:
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config.read_string('[general]\n%s' % f.read())
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for honorred_setting in self.honorred_settings:
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try:
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setattr(self, honorred_setting, config.get('general', honorred_setting))
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except (NoOptionError):
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pass
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def head_endpoint(self, endpoint, *args, **kwargs):
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return self.make_request('HEAD', endpoint, **kwargs)
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def get_endpoint(self, endpoint, *args, **kwargs):
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return self.make_request('GET', endpoint, **kwargs)
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def patch_endpoint(self, endpoint, *args, **kwargs):
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# Handle check mode
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if self.check_mode:
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self.json_output['changed'] = True
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self.exit_json(**self.json_output)
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return self.make_request('PATCH', endpoint, **kwargs)
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def post_endpoint(self, endpoint, *args, **kwargs):
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# Handle check mode
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if self.check_mode:
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self.json_output['changed'] = True
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self.exit_json(**self.json_output)
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return self.make_request('POST', endpoint, **kwargs)
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def delete_endpoint(self, endpoint, *args, **kwargs):
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# Handle check mode
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if self.check_mode:
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self.json_output['changed'] = True
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self.exit_json(**self.json_output)
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return self.make_request('DELETE', endpoint, **kwargs)
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def get_all_endpoint(self, endpoint, *args, **kwargs):
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response = self.get_endpoint(endpoint, *args, **kwargs)
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next_page = response['json']['next']
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if response['json']['count'] > 10000:
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self.fail_json(msg='The number of items being queried for is higher than 10,000.')
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while next_page is not None:
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next_response = self.get_endpoint(next_page)
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response['json']['results'] = response['json']['results'] + next_response['json']['results']
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next_page = next_response['json']['next']
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return response
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def get_one(self, endpoint, *args, **kwargs):
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response = self.get_endpoint(endpoint, *args, **kwargs)
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if response['status_code'] != 200:
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self.fail_json(msg="Got a {0} response when trying to get one from {1}".format(response['status_code'], endpoint))
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if 'count' not in response['json'] or 'results' not in response['json']:
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self.fail_json(msg="The endpoint did not provide count and results")
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if response['json']['count'] == 0:
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return None
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elif response['json']['count'] > 1:
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self.fail_json(msg="An unexpected number of items was returned from the API ({0})".format(response['json']['count']))
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return response['json']['results'][0]
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def resolve_name_to_id(self, endpoint, name_or_id):
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# Try to resolve the object by name
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response = self.get_endpoint(endpoint, **{'data': {'name': name_or_id}})
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if response['json']['count'] == 1:
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return response['json']['results'][0]['id']
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elif response['json']['count'] == 0:
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# If we got 0 items by name, maybe they gave us an ID, lets try looking it by by ID
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response = self.head_endpoint("{0}/{1}".format(endpoint, name_or_id), **{'return_none_on_404': True})
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if response is not None:
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return name_or_id
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self.fail_json(msg="The {0} {1} was not found on the Tower server".format(endpoint, name_or_id))
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else:
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self.fail_json(msg="Found too many names {0} at endpoint {1} try using an ID instead of a name".format(name_or_id, endpoint))
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def make_request(self, method, endpoint, *args, **kwargs):
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# Incase someone is calling us directly; make sure we were given a method, lets not just assume a GET
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if not method:
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raise Exception("The HTTP method must be defined")
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# Make sure we start with /api/vX
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if not endpoint.startswith("/"):
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endpoint = "/{0}".format(endpoint)
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if not endpoint.startswith("/api/"):
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endpoint = "/api/v2{0}".format(endpoint)
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if not endpoint.endswith('/') and '?' not in endpoint:
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endpoint = "{0}/".format(endpoint)
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# Extract the headers, this will be used in a couple of places
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headers = kwargs.get('headers', {})
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# Authenticate to Tower (if we've not already done so)
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if not self.authenticated:
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# This method will set a cookie in the cookie jar for us
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self.authenticate(**kwargs)
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if self.oauth_token:
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# If we have a oauth toekn we just use a bearer header
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headers['Authorization'] = 'Bearer {0}'.format(self.oauth_token)
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# Update the URL path with the endpoint
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self.url = self.url._replace(path=endpoint)
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if method in ['POST', 'PUT', 'PATCH']:
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headers.setdefault('Content-Type', 'application/json')
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kwargs['headers'] = headers
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elif kwargs.get('data'):
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self.url = self.url._replace(query=urlencode(kwargs.get('data')))
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data = {}
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if headers.get('Content-Type', '') == 'application/json':
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data = dumps(kwargs.get('data', {}))
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try:
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response = self.session.open(method, self.url.geturl(), headers=headers, validate_certs=self.verify_ssl, follow_redirects=True, data=data)
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self.url = self.url._replace(query=None)
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except(SSLValidationError) as ssl_err:
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self.fail_json(msg="Could not establish a secure connection to your host ({1}): {0}.".format(self.url.netloc, ssl_err))
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except(ConnectionError) as con_err:
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self.fail_json(msg="There was a network error of some kind trying to connect to your host ({1}): {0}.".format(self.url.netloc, con_err))
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except(HTTPError) as he:
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# Sanity check: Did the server send back some kind of internal error?
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if he.code >= 500:
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self.fail_json(msg='The host sent back a server error ({1}): {0}. Please check the logs and try again later'.format(self.url.path, he))
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# Sanity check: Did we fail to authenticate properly? If so, fail out now; this is always a failure.
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elif he.code == 401:
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self.fail_json(msg='Invalid Tower authentication credentials for {0} (HTTP 401).'.format(self.url.path))
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# Sanity check: Did we get a forbidden response, which means that the user isn't allowed to do this? Report that.
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elif he.code == 403:
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self.fail_json(msg="You don't have permission to {1} to {0} (HTTP 403).".format(self.url.path, method))
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# Sanity check: Did we get a 404 response?
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# Requests with primary keys will return a 404 if there is no response, and we want to consistently trap these.
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elif he.code == 404:
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if kwargs.get('return_none_on_404', False):
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return None
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self.fail_json(msg='The requested object could not be found at {0}.'.format(self.url.path))
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# Sanity check: Did we get a 405 response?
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# A 405 means we used a method that isn't allowed. Usually this is a bad request, but it requires special treatment because the
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# API sends it as a logic error in a few situations (e.g. trying to cancel a job that isn't running).
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elif he.code == 405:
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self.fail_json(msg="The Tower server says you can't make a request with the {0} method to this endpoing {1}".format(method, self.url.path))
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# Sanity check: Did we get some other kind of error? If so, write an appropriate error message.
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elif he.code >= 400:
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# We are going to return a 400 so the module can decide what to do with it
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page_data = he.read()
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try:
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return {'status_code': he.code, 'json': loads(page_data)}
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# JSONDecodeError only available on Python 3.5+
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except ValueError:
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return {'status_code': he.code, 'text': page_data}
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# self.fail_json(msg='The Tower server claims it was sent a bad request.\n{0} {1}\nstatus code: {2}\n\nResponse: {3}'.format(
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# method, self.url.path, he.code, he.read()))
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elif he.code == 204 and method == 'DELETE':
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# a 204 is a normal response for a delete function
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pass
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else:
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self.fail_json(msg="Unexpected return code when calling {0}: {1}".format(self.url.geturl(), he))
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except(Exception) as e:
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self.fail_json(msg="There was an unknown error when trying to connect to {2}: {0} {1}".format(type(e).__name__, e, self.url.geturl()))
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response_body = ''
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try:
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response_body = response.read()
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except(Exception) as e:
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self.fail_json(msg="Failed to read response body: {0}".format(e))
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response_json = {}
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if response_body and response_body != '':
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try:
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response_json = loads(response_body)
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except(Exception) as e:
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self.fail_json(msg="Failed to parse the response json: {0}".format(e))
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return {'status_code': response.status, 'json': response_json}
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def authenticate(self, **kwargs):
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if self.username and self.password:
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# Attempt to get a token from /api/v2/tokens/ by giving it our username/password combo
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# If we have a username and password we need to get a session cookie
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login_data = {
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"description": "Ansible Tower Module Token",
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"application": None,
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"scope": "write",
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}
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# Post to the tokens endpoint with baisc auth to try and get a token
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api_token_url = (self.url._replace(path='/api/v2/tokens/')).geturl()
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try:
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response = self.session.open(
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'POST', api_token_url,
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validate_certs=self.verify_ssl, follow_redirects=True,
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force_basic_auth=True, url_username=self.username, url_password=self.password,
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data=dumps(login_data), headers={'Content-Type': 'application/json'}
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)
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except(Exception) as e:
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# Sanity check: Did the server send back some kind of internal error?
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self.fail_json(msg='Failed to get token: {0}'.format(e))
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token_response = None
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try:
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token_response = response.read()
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response_json = loads(token_response)
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self.oauth_token_id = response_json['id']
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self.oauth_token = response_json['token']
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except(Exception) as e:
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self.fail_json(msg="Failed to extract token information from login response: {0}".format(e), **{'response': token_response})
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# If we have neiter of these then we can try un-authenticated access
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self.authenticated = True
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def default_check_mode(self):
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'''Execute check mode logic for Ansible Tower modules'''
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if self.check_mode:
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try:
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result = self.get_endpoint('ping')
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self.exit_json(**{'changed': True, 'tower_version': '{0}'.format(result['json']['version'])})
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except(Exception) as excinfo:
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self.fail_json(changed=False, msg='Failed check mode: {0}'.format(excinfo))
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def delete_if_needed(self, existing_item, handle_response=True, on_delete=None):
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# This will exit from the module on its own unless handle_response is False.
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# if handle response is True and the method successfully deletes an item and on_delete param is defined
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# the on_delete parameter will be called as a method pasing in this object and the json from the response
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# If you pass handle_response=False it will return one of two things:
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# None if the existing_item is not defined (so no delete needs to happen)
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# The response from Tower from calling the delete on the endpont. Its up to you to process the response and exit from the module
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# Note: common error codes from the Tower API can cause the module to fail even if handle_response is set to False
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if existing_item:
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# If we have an item, we can try to delete it
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try:
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item_url = existing_item['url']
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item_type = existing_item['type']
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item_id = existing_item['id']
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except KeyError as ke:
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self.fail_json(msg="Unable to process delete of item due to missing data {0}".format(ke))
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if 'name' in existing_item:
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item_name = existing_item['name']
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elif 'username' in existing_item:
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item_name = existing_item['username']
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else:
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self.fail_json(msg="Unable to process delete of {} due to missing name".format(item_type))
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response = self.delete_endpoint(item_url)
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if not handle_response:
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return response
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elif response['status_code'] in [202, 204]:
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if on_delete:
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on_delete(self, response['json'])
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self.json_output['changed'] = True
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self.json_output['id'] = item_id
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self.exit_json(**self.json_output)
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else:
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if 'json' in response and '__all__' in response['json']:
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self.fail_json(msg="Unable to delete {0} {1}: {2}".format(item_type, item_name, response['json']['__all__'][0]))
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elif 'json' in response:
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# This is from a project delete if there is an active job against it
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if 'error' in response['json']:
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self.fail_json(msg="Unable to delete {0} {1}: {2}".format(item_type, item_name, response['json']['error']))
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else:
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self.fail_json(msg="Unable to delete {0} {1}: {2}".format(item_type, item_name, response['json']))
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else:
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self.fail_json(msg="Unable to delete {0} {1}: {2}".format(item_type, item_name, response['status_code']))
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else:
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if not handle_response:
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return None
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else:
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self.exit_json(**self.json_output)
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def create_if_needed(self, existing_item, new_item, endpoint, handle_response=True, on_create=None, item_type='unknown'):
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#
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# This will exit from the module on its own unless handle_response is False.
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# if handle response is True and the method successfully creates an item and on_create param is defined
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# the on_create parameter will be called as a method pasing in this object and the json from the response
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# If you pass handle_response=False it will return one of two things:
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# None if the existing_item is already defined (so no create needs to happen)
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# The response from Tower from calling the patch on the endpont. Its up to you to process the response and exit from the module
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# Note: common error codes from the Tower API can cause the module to fail even if handle_response is set to False
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#
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if not endpoint:
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self.fail_json(msg="Unable to create new {} due to missing endpoint".format(item_type))
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if existing_item:
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try:
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item_url = existing_item['url']
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except KeyError as ke:
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self.fail_json(msg="Unable to process delete of item due to missing data {0}".format(ke))
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if not handle_response:
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return None
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else:
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self.exit_json(**self.json_output)
|
|
else:
|
|
# If we dont have an exisitng_item, we can try to create it
|
|
|
|
# We have to rely on item_type being passed in since we don't have an existing item that declares its type
|
|
# The item_name we will pull out from the new_item (if it exists)
|
|
item_name = new_item.get('name', 'unknown')
|
|
|
|
response = self.post_endpoint(endpoint, **{'data': new_item})
|
|
if not handle_response:
|
|
return response
|
|
elif response['status_code'] == 201:
|
|
self.json_output['name'] = 'unknown'
|
|
if 'name' in response['json']:
|
|
self.json_output['name'] = response['json']['name']
|
|
elif 'username' in response['json']:
|
|
# User objects return username instead of name
|
|
self.json_output['name'] = response['json']['username']
|
|
self.json_output['id'] = response['json']['id']
|
|
self.json_output['changed'] = True
|
|
if on_create is None:
|
|
self.exit_json(**self.json_output)
|
|
else:
|
|
on_create(self, response['json'])
|
|
else:
|
|
if 'json' in response and '__all__' in response['json']:
|
|
self.fail_json(msg="Unable to create {0} {1}: {2}".format(item_type, item_name, response['json']['__all__'][0]))
|
|
elif 'json' in response:
|
|
self.fail_json(msg="Unable to create {0} {1}: {2}".format(item_type, item_name, response['json']))
|
|
else:
|
|
self.fail_json(msg="Unable to create {0} {1}: {2}".format(item_type, item_name, response['status_code']), **{'payload': kwargs['data']})
|
|
|
|
def update_if_needed(self, existing_item, new_item, handle_response=True, on_update=None):
|
|
# This will exit from the module on its own unless handle_response is False.
|
|
# if handle response is True and the method successfully updates an item and on_update param is defined
|
|
# the on_update parameter will be called as a method pasing in this object and the json from the response
|
|
# If you pass handle_response=False it will return one of three things:
|
|
# None if the existing_item does not need to be updated
|
|
# The response from Tower from patching to the endpoint. Its up to you to process the response and exit from the module.
|
|
# an ItemNotDefined exception if the existing_item does not exist
|
|
# Note: common error codes from the Tower API can cause the module to fail even if handle_response is set to False
|
|
if existing_item:
|
|
# If we have an item, we can see if needs an update
|
|
try:
|
|
item_url = existing_item['url']
|
|
item_name = existing_item['name']
|
|
item_type = existing_item['url']
|
|
item_id = existing_item['id']
|
|
except KeyError as ke:
|
|
self.fail_json(msg="Unable to process update of item due to missing data {0}".format(ke))
|
|
|
|
needs_update = False
|
|
for field in new_item:
|
|
existing_field = existing_item.get(field, None)
|
|
new_field = new_item.get(field, None)
|
|
# If the two items don't match and we are not comparing '' to None
|
|
if existing_field != new_field and not (existing_field in (None, '') and new_field == ''):
|
|
# something dosent match so lets do it
|
|
neds_update = True
|
|
break
|
|
|
|
if needs_update:
|
|
response = self.patch_endpoint(item_url, **{'data': new_item})
|
|
if not handle_response:
|
|
return response
|
|
elif response['status_code'] == 200:
|
|
self.json_output['changed'] = True
|
|
self.json_output['id'] = item_id
|
|
if on_update is None:
|
|
self.exit_json(**self.json_output)
|
|
else:
|
|
on_update(self, response['json'])
|
|
elif 'json' in response and '__all__' in response['json']:
|
|
self.fail_json(msg=response['json']['__all__'])
|
|
else:
|
|
self.fail_json(**{'msg': "Unable to update {0} {1}, see response".format(item_type, item_name), 'response': response})
|
|
else:
|
|
if not handle_response:
|
|
return None
|
|
|
|
# Since we made it here, we don't need to update, status ok
|
|
self.json_output['changed'] = False
|
|
self.json_output['id'] = item_id
|
|
self.exit_json(**self.json_output)
|
|
else:
|
|
if handle_response:
|
|
self.fail_json(msg="The exstiing item is not defined and thus cannot be updated")
|
|
else:
|
|
raise ItemNotDefined("Not given an existing item to update")
|
|
|
|
def create_or_update_if_needed(self, existing_item, new_item, endpoint=None, handle_response=True, item_type='unknown', on_create=None, on_update=None):
|
|
if existing_item:
|
|
return self.update_if_needed(existing_item, new_item, handle_response=handle_response, on_update=on_update)
|
|
else:
|
|
return self.create_if_needed(existing_item, new_item, endpoint, handle_response=handle_response, on_create=on_create, item_type=item_type)
|
|
|
|
def logout(self):
|
|
if self.oauth_token_id is not None and self.username and self.password:
|
|
# Attempt to delete our current token from /api/v2/tokens/
|
|
# Post to the tokens endpoint with baisc auth to try and get a token
|
|
api_token_url = (self.url._replace(path='/api/v2/tokens/{0}/'.format(self.oauth_token_id))).geturl()
|
|
|
|
try:
|
|
self.session.open(
|
|
'DELETE',
|
|
api_token_url,
|
|
validate_certs=self.verify_ssl,
|
|
follow_redirects=True,
|
|
force_basic_auth=True,
|
|
url_username=self.username,
|
|
url_password=self.password
|
|
)
|
|
self.oauth_token_id = None
|
|
self.authenticated = False
|
|
except(Exception) as e:
|
|
# Sanity check: Did the server send back some kind of internal error?
|
|
self.warn('Failed to release tower token {0}: {1}'.format(self.oauth_token_id, e))
|
|
|
|
def fail_json(self, **kwargs):
|
|
# Try to logout if we are authenticated
|
|
self.logout()
|
|
super(TowerModule, self).fail_json(**kwargs)
|
|
|
|
def exit_json(self, **kwargs):
|
|
# Try to logout if we are authenticated
|
|
self.logout()
|
|
super(TowerModule, self).exit_json(**kwargs)
|
|
|
|
def is_job_done(self, job_status):
|
|
if job_status in ['new', 'pending', 'waiting', 'running']:
|
|
return False
|
|
return True
|