_get_auth_token() - Code Metrics - Inspection of "[WIP]: Update for nagios handler code" - StackStorm/st2contrib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#502)

unknown

created 2016-06-13 18:07 UTC

_get_auth_token() B

↳ Parent: Project

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	6
c	2
b	0
f	0
dl	0
loc	26
rs	7.5384

#!/usr/bin/env python

import httplib
try:
    import simplejson as json
except ImportError:
    import json
import os
import sys
import traceback
from urlparse import urljoin
import argparse
try:
    import requests
except ImportError:
    raise ImportError('Missing dependency requests. \
                      Do ``pip install requests``.')

try:
    import yaml
except ImportError:
    raise ImportError('Missing dependency pyyaml. \
                      Do ``pip install pyyaml``.')

# ST2 configuration

ST2_API_BASE_URL = None
ST2_AUTH_BASE_URL = None
ST2_USERNAME = None
ST2_PASSWORD = None
ST2_API_KEY = None
ST2_AUTH_TOKEN = None
ST2_SSL_VERIFY = False

ST2_AUTH_PATH = 'tokens'
ST2_WEBHOOKS_PATH = 'webhooks/st2'
ST2_TRIGGERS_PATH = 'triggertypes'
ST2_TRIGGERTYPE_PACK = 'nagios'
ST2_TRIGGERTYPE_NAME = 'service_state_change'
ST2_TRIGGERTYPE_REF = '.'.join([ST2_TRIGGERTYPE_PACK, ST2_TRIGGERTYPE_NAME])

STATE_MESSAGE = {
    'OK': 'All is well on the Western front.',
    'WARNING': 'We gots a warning yo!',
    'UNKNOWN': 'It be unknown...',
    'CRITICAL': 'Critical!'
}

REGISTERED_WITH_ST2 = False
UNAUTHED = False
IS_API_KEY_AUTH = False

OK_CODES = [httplib.OK, httplib.CREATED, httplib.ACCEPTED, httplib.CONFLICT]
UNREACHABLE_CODES = [httplib.NOT_FOUND]

TOKEN_AUTH_HEADER = 'X-Auth-Token'
API_KEY_AUTH_HEADER = 'St2-Api-Key'


def _create_trigger_type(verbose=False):
    try:
        url = _get_st2_triggers_url()
        payload = {
            'name': ST2_TRIGGERTYPE_NAME,
            'pack': ST2_TRIGGERTYPE_PACK,
            'description': 'Trigger type for nagios event handler.'
        }

        headers = _get_st2_request_headers()
        headers['Content-Type'] = 'application/json; charset=utf-8'

        if verbose:
            print('POST to URL {0} for registering trigger. Body = {1}, '
                  'headers = {2}.\n'.format(url, payload, headers))

        post_resp = requests.post(url, data=json.dumps(payload),
                                  headers=headers,
                                  verify=ST2_SSL_VERIFY)
    except:
        traceback.print_exc(limit=20)
        raise Exception('Unable to connect to st2 endpoint {0}.'.format(url))
    else:
        status = post_resp.status_code
        if status in UNREACHABLE_CODES:
            msg = 'Got response {0}. Invalid triggers endpoint {1}.' \
                'Check configuration!'.format(status, url)
            raise Exception(msg)

        if status not in OK_CODES:
            msg = 'Failed to register trigger type {0}.{1} with st2. ' \
                'HTTP_CODE: {2}'.format(ST2_TRIGGERTYPE_PACK,
                                        ST2_TRIGGERTYPE_NAME, status)
            raise Exception(msg)
        else:
            print('Registered trigger type with st2.\n')


def _get_auth_url():
    return urljoin(ST2_AUTH_BASE_URL, ST2_AUTH_PATH)


def _get_auth_token(verbose=False):
    auth_url = _get_auth_url()

    if verbose:
        print('Will POST to URL {0} to get auth token.\n'.format(auth_url))

    try:
        resp = requests.post(auth_url, json.dumps({'ttl': 5 * 60}),
                             auth=(ST2_USERNAME, ST2_PASSWORD),
                             verify=ST2_SSL_VERIFY)
    except:
        traceback.print_exc(limit=20)
        raise Exception('Unable to connect to st2 endpoint {0}.'.
                        format(auth_url))
    else:
        if resp.status_code in UNREACHABLE_CODES:
            msg = 'Got response {0}. Invalid auth endpoint {1}. '\
                'Check configuration!'.format(resp.status_code, auth_url)
            raise Exception(msg)

        if resp.status_code not in OK_CODES:
            msg = 'Cannot get a valid auth token from {0}. '\
                'HTTP_CODE: {1}'.format(auth_url, resp.status_code)
            raise Exception(msg)

        return resp.json()['token']


def _get_st2_request_headers():
    headers = {}

    if not UNAUTHED:
        if IS_API_KEY_AUTH:
            headers[API_KEY_AUTH_HEADER] = ST2_API_KEY
        else:
            if ST2_AUTH_TOKEN:
                headers[TOKEN_AUTH_HEADER] = ST2_AUTH_TOKEN
            else:
                pass

    return headers


def _register_with_st2(verbose=False):
    global REGISTERED_WITH_ST2
    try:
        if not REGISTERED_WITH_ST2:
            if verbose:
                print('Checking if trigger "{0}" registered with st2.'
                      .format(ST2_TRIGGERTYPE_REF))
            _register_trigger_with_st2(verbose=verbose)
            REGISTERED_WITH_ST2 = True
    except:
        traceback.print_exc(limit=20)
        sys.stderr.write(
            'Failed registering with st2. Won\'t post event.\n')
        sys.exit(2)


def _register_trigger_with_st2(verbose=False):
    triggers_url = _get_st2_triggers_url()

    try:
        headers = _get_st2_request_headers()
        if verbose:
            print('Will GET from URL {0} for detecting trigger {1}.\n'
                  .format(triggers_url, ST2_TRIGGERTYPE_REF))
            print('Request headers: {0}\n'.format(headers))

        get_resp = requests.get(triggers_url, headers=headers,
                                verify=ST2_SSL_VERIFY)

        if get_resp.status_code != httplib.OK:
            _create_trigger_type(verbose=verbose)
        else:
            body = json.loads(get_resp.text)
            if len(body) == 0:
                _create_trigger_type(verbose=verbose)
    except:
        traceback.print_exc(limit=20)
        raise Exception('Unable to connect to st2 endpoint {0}.\n'
                        .format(triggers_url))
    else:
        if verbose:
            print('Successfully registered trigger {0} with st2.\n'
                  .format(ST2_TRIGGERTYPE_REF))


def _get_st2_triggers_base_url():
    url = urljoin(ST2_API_BASE_URL, ST2_TRIGGERS_PATH)
    return url


def _get_st2_triggers_url():
    url = urljoin(_get_st2_triggers_base_url() + '/', ST2_TRIGGERTYPE_REF)
    return url


def _get_st2_webhooks_url():
    url = urljoin(ST2_API_BASE_URL, ST2_WEBHOOKS_PATH)
    return url


def _post_webhook(url, body, verbose=False):
    headers = _get_st2_request_headers()
    headers['X-ST2-Integration'] = 'nagios.'
    headers['Content-Type'] = 'application/json; charset=utf-8'

    try:
        if verbose:
            print('Webhook POST: url: {0}, headers: {1}, body: {2}\n'
                  .format(url, headers, body))
        r = requests.post(url, data=json.dumps(body), headers=headers,
                          verify=False)
    except:
        traceback.print_exc(20)
        raise Exception('Cannot connect to st2 endpoint {0}.'.format(url))
    else:
        status = r.status_code

        if status in UNREACHABLE_CODES:
            msg = 'Webhook URL {0} does not exist. Check StackStorm '\
                'installation!'.format(url)
            raise Exception(msg)

        if status not in OK_CODES:
            sys.stderr.write('Failed posting nagio event to st2. HTTP_CODE: '
                             '{0}\n'.format(status))
        else:
            sys.stdout.write('Sent nagio event to st2. HTTP_CODE: '
                             '{0}\n'.format(status))


def _post_event_to_st2(payload, verbose=False):
    body = {}
    body['trigger'] = ST2_TRIGGERTYPE_REF
    try:
        body['payload'] = payload
    except:
        traceback.print_exc(limit=20)
        print('Invalid JSON payload {0}.'.format(payload))
        sys.exit(3)

    try:
        _post_webhook(url=_get_st2_webhooks_url(), body=body, verbose=verbose)
        return True
    except:
        traceback.print_exc(limit=20)
        print('Cannot send event to st2.')
        sys.exit(4)


def _set_config_opts(config_file, verbose=False):
    global ST2_USERNAME
    global ST2_PASSWORD
    global ST2_API_KEY
    global ST2_AUTH_TOKEN
    global ST2_API_BASE_URL
    global ST2_AUTH_BASE_URL
    global ST2_SSL_VERIFY
    global UNAUTHED
    global IS_API_KEY_AUTH
    if not os.path.exists(config_file):
        print('Configuration file "{0}" not found. Exiting!!!'
              .format(config_file))
        sys.exit(1)

    with open(config_file) as f:
        config = yaml.safe_load(f)

        if verbose:
            print('Contents of config file: {0}'.format(config))

        ST2_USERNAME = config['st2_username']
        ST2_PASSWORD = config['st2_password']
        ST2_API_KEY = config['st2_api_key']
        ST2_API_BASE_URL = config['st2_api_base_url']
        if not ST2_API_BASE_URL.endswith('/'):
            ST2_API_BASE_URL += '/'
        ST2_AUTH_BASE_URL = config['st2_auth_base_url']
        if not ST2_AUTH_BASE_URL.endswith('/'):
            ST2_AUTH_BASE_URL += '/'
        if type(config['unauthed']) is bool:
            UNAUTHED = config['unauthed']
        if type(config['ssl_verify']) is bool:
            ST2_SSL_VERIFY = config['ssl_verify']

    if ST2_API_KEY:
        IS_API_KEY_AUTH = True

    if verbose:
        print('Unauthed? : {0}\nAPI key auth?: {1}\nSSL Verify? : {2}\n'
              .format(UNAUTHED, IS_API_KEY_AUTH, ST2_SSL_VERIFY))

    if not UNAUTHED and not IS_API_KEY_AUTH:
        try:
            if not ST2_AUTH_TOKEN:
                if verbose:
                    print('No auth token found. Let\'s get one from'
                          'StackStorm!')
                ST2_AUTH_TOKEN = _get_auth_token(verbose=verbose)
        except:
            traceback.print_exc(limit=20)
            print('Unable to negotiate an auth token. Exiting!')
            sys.exit(1)


def _get_payload(host, service, event_id, state, state_id, state_type, attempt):
    payload = {}
    payload['host'] = host
    payload['service'] = service
    payload['event_id'] = event_id
    payload['state'] = state
    payload['state_id'] = state_id
    payload['state_type'] = state_type
    payload['attempt'] = attempt
    payload['msg'] = STATE_MESSAGE.get(state, 'Undefined state.')
    return payload


def main(config_file, payload, verbose=False):

    _set_config_opts(config_file=config_file, verbose=verbose)

    _register_with_st2(verbose=verbose)

    _post_event_to_st2(payload, verbose=verbose)


if __name__ == '__main__':
    description = '\nStackStorm nagios event handler. Please provide args '\
        'in following order after the config_path:\n\n event_id, service, '\
        'state,state_id, state_type, attempt, host\n'
    parser = argparse.ArgumentParser(description)
    parser.add_argument('config_path',
                        help='Exchange to listen on')
    parser.add_argument('--verbose', '-v', required=False, action='store_true',
                        help='Verbose mode.')

    args, nagio_args = parser.parse_known_args()

    event_id = nagio_args[0]
    service = nagio_args[1]
    state = nagio_args[2]
    state_id = nagio_args[3]
    state_type = nagio_args[4]
    attempt = nagio_args[5]
    host = nagio_args[6]

    payload = _get_payload(host, service, event_id, state, state_id, state_type, attempt)
    main(config_file=args.config_path, payload=payload, verbose=args.verbose)


1			#!/usr/bin/env python
2
3			import httplib
4			try:
5			import simplejson as json
6			except ImportError:
7			import json
8			import os
9			import sys
10			import traceback
11			from urlparse import urljoin
12			import argparse
13			try:
14			import requests
15			except ImportError:
16			raise ImportError('Missing dependency requests. \
17			Do ``pip install requests``.')
18
19			try:
20			import yaml
21			except ImportError:
22			raise ImportError('Missing dependency pyyaml. \
23			Do ``pip install pyyaml``.')
24
25			# ST2 configuration
26
27			ST2_API_BASE_URL = None
28			ST2_AUTH_BASE_URL = None
29			ST2_USERNAME = None
30			ST2_PASSWORD = None
31			ST2_API_KEY = None
32			ST2_AUTH_TOKEN = None
33			ST2_SSL_VERIFY = False
34
35			ST2_AUTH_PATH = 'tokens'
36			ST2_WEBHOOKS_PATH = 'webhooks/st2'
37			ST2_TRIGGERS_PATH = 'triggertypes'
38			ST2_TRIGGERTYPE_PACK = 'nagios'
39			ST2_TRIGGERTYPE_NAME = 'service_state_change'
40			ST2_TRIGGERTYPE_REF = '.'.join([ST2_TRIGGERTYPE_PACK, ST2_TRIGGERTYPE_NAME])
41
42			STATE_MESSAGE = {
43			'OK': 'All is well on the Western front.',
44			'WARNING': 'We gots a warning yo!',
45			'UNKNOWN': 'It be unknown...',
46			'CRITICAL': 'Critical!'
47			}
48
49			REGISTERED_WITH_ST2 = False
50			UNAUTHED = False
51			IS_API_KEY_AUTH = False
52
53			OK_CODES = [httplib.OK, httplib.CREATED, httplib.ACCEPTED, httplib.CONFLICT]
54			UNREACHABLE_CODES = [httplib.NOT_FOUND]
55
56			TOKEN_AUTH_HEADER = 'X-Auth-Token'
57			API_KEY_AUTH_HEADER = 'St2-Api-Key'
58
59
60			def _create_trigger_type(verbose=False):
61			try:
62			url = _get_st2_triggers_url()
63			payload = {
64			'name': ST2_TRIGGERTYPE_NAME,
65			'pack': ST2_TRIGGERTYPE_PACK,
66			'description': 'Trigger type for nagios event handler.'
67			}
68
69			headers = _get_st2_request_headers()
70			headers['Content-Type'] = 'application/json; charset=utf-8'
71
72			if verbose:
73			print('POST to URL {0} for registering trigger. Body = {1}, '
74			'headers = {2}.\n'.format(url, payload, headers))
75
76			post_resp = requests.post(url, data=json.dumps(payload),
77			headers=headers,
78			verify=ST2_SSL_VERIFY)
79			except:
80			traceback.print_exc(limit=20)
81			raise Exception('Unable to connect to st2 endpoint {0}.'.format(url))
82			else:
83			status = post_resp.status_code
84			if status in UNREACHABLE_CODES:
85			msg = 'Got response {0}. Invalid triggers endpoint {1}.' \
86			'Check configuration!'.format(status, url)
87			raise Exception(msg)
88
89			if status not in OK_CODES:
90			msg = 'Failed to register trigger type {0}.{1} with st2. ' \
91			'HTTP_CODE: {2}'.format(ST2_TRIGGERTYPE_PACK,
92			ST2_TRIGGERTYPE_NAME, status)
93			raise Exception(msg)
94			else:
95			print('Registered trigger type with st2.\n')
96
97
98			def _get_auth_url():
99			return urljoin(ST2_AUTH_BASE_URL, ST2_AUTH_PATH)
100
101
102			def _get_auth_token(verbose=False):
103			auth_url = _get_auth_url()
104
105			if verbose:
106			print('Will POST to URL {0} to get auth token.\n'.format(auth_url))
107
108			try:
109			resp = requests.post(auth_url, json.dumps({'ttl': 5 * 60}),
110			auth=(ST2_USERNAME, ST2_PASSWORD),
111			verify=ST2_SSL_VERIFY)
112			except:
113			traceback.print_exc(limit=20)
114			raise Exception('Unable to connect to st2 endpoint {0}.'.
115			format(auth_url))
116			else:
117			if resp.status_code in UNREACHABLE_CODES:
118			msg = 'Got response {0}. Invalid auth endpoint {1}. '\
119			'Check configuration!'.format(resp.status_code, auth_url)
120			raise Exception(msg)
121
122			if resp.status_code not in OK_CODES:
123			msg = 'Cannot get a valid auth token from {0}. '\
124			'HTTP_CODE: {1}'.format(auth_url, resp.status_code)
125			raise Exception(msg)
126
127			return resp.json()['token']
128
129
130			def _get_st2_request_headers():
131			headers = {}
132
133			if not UNAUTHED:
134			if IS_API_KEY_AUTH:
135			headers[API_KEY_AUTH_HEADER] = ST2_API_KEY
136			else:
137			if ST2_AUTH_TOKEN:
138			headers[TOKEN_AUTH_HEADER] = ST2_AUTH_TOKEN
139			else:
140			pass
141
142			return headers
143
144
145			def _register_with_st2(verbose=False):
146			global REGISTERED_WITH_ST2
147			try:
148			if not REGISTERED_WITH_ST2:
149			if verbose:
150			print('Checking if trigger "{0}" registered with st2.'
151			.format(ST2_TRIGGERTYPE_REF))
152			_register_trigger_with_st2(verbose=verbose)
153			REGISTERED_WITH_ST2 = True
154			except:
155			traceback.print_exc(limit=20)
156			sys.stderr.write(
157			'Failed registering with st2. Won\'t post event.\n')
158			sys.exit(2)
159
160
161			def _register_trigger_with_st2(verbose=False):
162			triggers_url = _get_st2_triggers_url()
163
164			try:
165			headers = _get_st2_request_headers()
166			if verbose:
167			print('Will GET from URL {0} for detecting trigger {1}.\n'
168			.format(triggers_url, ST2_TRIGGERTYPE_REF))
169			print('Request headers: {0}\n'.format(headers))
170
171			get_resp = requests.get(triggers_url, headers=headers,
172			verify=ST2_SSL_VERIFY)
173
174			if get_resp.status_code != httplib.OK:
175			_create_trigger_type(verbose=verbose)
176			else:
177			body = json.loads(get_resp.text)
178			if len(body) == 0:
179			_create_trigger_type(verbose=verbose)
180			except:
181			traceback.print_exc(limit=20)
182			raise Exception('Unable to connect to st2 endpoint {0}.\n'
183			.format(triggers_url))
184			else:
185			if verbose:
186			print('Successfully registered trigger {0} with st2.\n'
187			.format(ST2_TRIGGERTYPE_REF))
188
189
190			def _get_st2_triggers_base_url():
191			url = urljoin(ST2_API_BASE_URL, ST2_TRIGGERS_PATH)
192			return url
193
194
195			def _get_st2_triggers_url():
196			url = urljoin(_get_st2_triggers_base_url() + '/', ST2_TRIGGERTYPE_REF)
197			return url
198
199
200			def _get_st2_webhooks_url():
201			url = urljoin(ST2_API_BASE_URL, ST2_WEBHOOKS_PATH)
202			return url
203
204
205			def _post_webhook(url, body, verbose=False):
206			headers = _get_st2_request_headers()
207			headers['X-ST2-Integration'] = 'nagios.'
208			headers['Content-Type'] = 'application/json; charset=utf-8'
209
210			try:
211			if verbose:
212			print('Webhook POST: url: {0}, headers: {1}, body: {2}\n'
213			.format(url, headers, body))
214			r = requests.post(url, data=json.dumps(body), headers=headers,
215			verify=False)
216			except:
217			traceback.print_exc(20)
218			raise Exception('Cannot connect to st2 endpoint {0}.'.format(url))
219			else:
220			status = r.status_code
221
222			if status in UNREACHABLE_CODES:
223			msg = 'Webhook URL {0} does not exist. Check StackStorm '\
224			'installation!'.format(url)
225			raise Exception(msg)
226
227			if status not in OK_CODES:
228			sys.stderr.write('Failed posting nagio event to st2. HTTP_CODE: '
229			'{0}\n'.format(status))
230			else:
231			sys.stdout.write('Sent nagio event to st2. HTTP_CODE: '
232			'{0}\n'.format(status))
233
234
235			def _post_event_to_st2(payload, verbose=False):
236			body = {}
237			body['trigger'] = ST2_TRIGGERTYPE_REF
238			try:
239			body['payload'] = payload
240			except:
241			traceback.print_exc(limit=20)
242			print('Invalid JSON payload {0}.'.format(payload))
243			sys.exit(3)
244
245			try:
246			_post_webhook(url=_get_st2_webhooks_url(), body=body, verbose=verbose)
247			return True
248			except:
249			traceback.print_exc(limit=20)
250			print('Cannot send event to st2.')
251			sys.exit(4)
252
253
254			def _set_config_opts(config_file, verbose=False):
255			global ST2_USERNAME
256			global ST2_PASSWORD
257			global ST2_API_KEY
258			global ST2_AUTH_TOKEN
259			global ST2_API_BASE_URL
260			global ST2_AUTH_BASE_URL
261			global ST2_SSL_VERIFY
262			global UNAUTHED
263			global IS_API_KEY_AUTH
264			if not os.path.exists(config_file):
265			print('Configuration file "{0}" not found. Exiting!!!'
266			.format(config_file))
267			sys.exit(1)
268
269			with open(config_file) as f:
270			config = yaml.safe_load(f)
271
272			if verbose:
273			print('Contents of config file: {0}'.format(config))
274
275			ST2_USERNAME = config['st2_username']
276			ST2_PASSWORD = config['st2_password']
277			ST2_API_KEY = config['st2_api_key']
278			ST2_API_BASE_URL = config['st2_api_base_url']
279			if not ST2_API_BASE_URL.endswith('/'):
280			ST2_API_BASE_URL += '/'
281			ST2_AUTH_BASE_URL = config['st2_auth_base_url']
282			if not ST2_AUTH_BASE_URL.endswith('/'):
283			ST2_AUTH_BASE_URL += '/'
284			if type(config['unauthed']) is bool:
285			UNAUTHED = config['unauthed']
286			if type(config['ssl_verify']) is bool:
287			ST2_SSL_VERIFY = config['ssl_verify']
288
289			if ST2_API_KEY:
290			IS_API_KEY_AUTH = True
291
292			if verbose:
293			print('Unauthed? : {0}\nAPI key auth?: {1}\nSSL Verify? : {2}\n'
294			.format(UNAUTHED, IS_API_KEY_AUTH, ST2_SSL_VERIFY))
295
296			if not UNAUTHED and not IS_API_KEY_AUTH:
297			try:
298			if not ST2_AUTH_TOKEN:
299			if verbose:
300			print('No auth token found. Let\'s get one from'
301			'StackStorm!')
302			ST2_AUTH_TOKEN = _get_auth_token(verbose=verbose)
303			except:
304			traceback.print_exc(limit=20)
305			print('Unable to negotiate an auth token. Exiting!')
306			sys.exit(1)
307
308
309			def _get_payload(host, service, event_id, state, state_id, state_type, attempt):
310			payload = {}
311			payload['host'] = host
312			payload['service'] = service
313			payload['event_id'] = event_id
314			payload['state'] = state
315			payload['state_id'] = state_id
316			payload['state_type'] = state_type
317			payload['attempt'] = attempt
318			payload['msg'] = STATE_MESSAGE.get(state, 'Undefined state.')
319			return payload
320
321
322			def main(config_file, payload, verbose=False):
323
324			_set_config_opts(config_file=config_file, verbose=verbose)
325
326			_register_with_st2(verbose=verbose)
327
328			_post_event_to_st2(payload, verbose=verbose)
329
330
331			if __name__ == '__main__':
332			description = '\nStackStorm nagios event handler. Please provide args '\
333			'in following order after the config_path:\n\n event_id, service, '\
334			'state,state_id, state_type, attempt, host\n'
335			parser = argparse.ArgumentParser(description)
336			parser.add_argument('config_path',
337			help='Exchange to listen on')
338			parser.add_argument('--verbose', '-v', required=False, action='store_true',
339			help='Verbose mode.')
340
341			args, nagio_args = parser.parse_known_args()
342
343			event_id = nagio_args[0]
344			service = nagio_args[1]
345			state = nagio_args[2]
346			state_id = nagio_args[3]
347			state_type = nagio_args[4]
348			attempt = nagio_args[5]
349			host = nagio_args[6]
350
351			payload = _get_payload(host, service, event_id, state, state_id, state_type, attempt)
352			main(config_file=args.config_path, payload=payload, verbose=args.verbose)
353

StackStorm / st2contrib

Pull Request — master (#502)

_get_auth_token() B

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