-
Notifications
You must be signed in to change notification settings - Fork 4.3k
/
Copy pathcreatedefaultrole.py
167 lines (138 loc) · 6.06 KB
/
createdefaultrole.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
# Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file 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.
# Class to create default roles for lifecycle
import logging
from awscli.clidriver import CLIOperationCaller
from awscli.customizations.utils import get_policy_arn_suffix
from awscli.customizations.commands import BasicCommand
from awscli.customizations.dlm.iam import IAM
from awscli.customizations.dlm.constants \
import RESOURCES, \
LIFECYCLE_DEFAULT_ROLE_ASSUME_POLICY, \
POLICY_ARN_PATTERN, \
RESOURCE_TYPE_SNAPSHOT, \
RESOURCE_TYPE_IMAGE
LOG = logging.getLogger(__name__)
def _construct_result(create_role_response, get_policy_response):
get_policy_response.pop('ResponseMetadata', None)
create_role_response.pop('ResponseMetadata', None)
result = {'RolePolicy': get_policy_response}
result.update(create_role_response)
return result
# Display the result as formatted json
def display_response(session, operation_name, result, parsed_globals):
if result is not None:
cli_operation_caller = CLIOperationCaller(session)
# Calling a private method. Should be changed after the functionality
# is moved outside CliOperationCaller.
cli_operation_caller._display_response(
operation_name, result, parsed_globals)
# Get policy arn from region and policy name
def get_policy_arn(region, policy_name):
region_suffix = get_policy_arn_suffix(region)
role_arn = POLICY_ARN_PATTERN.format(region_suffix, policy_name)
return role_arn
# Method to parse the arguments to get the region value
def get_region(session, parsed_globals):
region = parsed_globals.region
if region is None:
region = session.get_config_variable('region')
return region
class CreateDefaultRole(BasicCommand):
NAME = "create-default-role"
DESCRIPTION = ('Creates the default IAM role '
' which will be used by Lifecycle service.\n'
'If the role does not exist, create-default-role '
'will automatically create it and set its policy.'
' If the role has been already '
'created, create-default-role'
' will not update its policy.'
'\n')
ARG_TABLE = [
{'name': 'iam-endpoint',
'no_paramfile': True,
'help_text': '<p>The IAM endpoint to call for creating the roles.'
' This is optional and should only be specified when a'
' custom endpoint should be called for IAM operations'
'.</p>'},
{'name': 'resource-type',
'default': RESOURCE_TYPE_SNAPSHOT,
'choices': [RESOURCE_TYPE_SNAPSHOT, RESOURCE_TYPE_IMAGE],
'help_text': (
"<p>The resource type for which the role needs to be created."
" The available options are '%s' and '%s'."
" This parameter defaults to '%s'.</p>"
% (RESOURCE_TYPE_SNAPSHOT, RESOURCE_TYPE_IMAGE,
RESOURCE_TYPE_SNAPSHOT))}
]
def __init__(self, session):
super(CreateDefaultRole, self).__init__(session)
def _run_main(self, parsed_args, parsed_globals):
"""Call to run the commands"""
self._region = get_region(self._session, parsed_globals)
self._endpoint_url = parsed_args.iam_endpoint
self._resource_type = parsed_args.resource_type
self._iam_client = IAM(self._session.create_client(
'iam',
region_name=self._region,
endpoint_url=self._endpoint_url,
verify=parsed_globals.verify_ssl
))
result = self._create_default_role_if_not_exists(parsed_globals)
display_response(
self._session,
'create_role',
result,
parsed_globals
)
return 0
def _create_default_role_if_not_exists(self, parsed_globals):
"""Method to create default lifecycle role
if it doesn't exist already
"""
role_name = RESOURCES[self._resource_type]['default_role_name']
assume_role_policy = LIFECYCLE_DEFAULT_ROLE_ASSUME_POLICY
if self._iam_client.check_if_role_exists(role_name):
LOG.debug('Role %s exists', role_name)
return None
LOG.debug('Role %s does not exist. '
'Creating default role for Lifecycle', role_name)
# Get Region
region = get_region(self._session, parsed_globals)
if region is None:
raise ValueError('You must specify a region. '
'You can also configure your region '
'by running "aws configure".')
managed_policy_arn = get_policy_arn(
region,
RESOURCES[self._resource_type]['default_policy_name']
)
# Don't proceed if managed policy does not exist
if not self._iam_client.check_if_policy_exists(managed_policy_arn):
LOG.debug('Managed Policy %s does not exist.', managed_policy_arn)
return None
LOG.debug('Managed Policy %s exists.', managed_policy_arn)
# Create default role
create_role_response = \
self._iam_client.create_role_with_trust_policy(
role_name,
assume_role_policy
)
# Attach policy to role
self._iam_client.attach_policy_to_role(
managed_policy_arn,
role_name
)
# Construct result
get_policy_response = self._iam_client.get_policy(managed_policy_arn)
return _construct_result(create_role_response, get_policy_response)