ansible/lib/ansible/module_utils/ec2.py
Ralph Bean 4903bca0c1 Remove check of hardcoded AWS region list.
You can extend boto to point at other regions that are defined in a
private cloud by defining ``BOTO_ENDPOINTS`` or ``endpoints_path`` in
the ``~/.boto`` file.

Ansible was doing a premature check against a hard-coded list of regions
that interrupted this possibility.  This commit removes that and
clarifies what the user can do if they specify a non-AWS region.
2015-04-15 17:55:27 -04:00

188 lines
7.4 KiB
Python

# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# Copyright (c), Michael DeHaan <michael.dehaan@gmail.com>, 2012-2013
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
try:
from distutils.version import LooseVersion
HAS_LOOSE_VERSION = True
except:
HAS_LOOSE_VERSION = False
def aws_common_argument_spec():
return dict(
ec2_url=dict(),
aws_secret_key=dict(aliases=['ec2_secret_key', 'secret_key'], no_log=True),
aws_access_key=dict(aliases=['ec2_access_key', 'access_key']),
validate_certs=dict(default=True, type='bool'),
security_token=dict(aliases=['access_token'], no_log=True),
profile=dict(),
)
def ec2_argument_spec():
spec = aws_common_argument_spec()
spec.update(
dict(
region=dict(aliases=['aws_region', 'ec2_region']),
)
)
return spec
def boto_supports_profile_name():
return hasattr(boto.ec2.EC2Connection, 'profile_name')
def get_aws_connection_info(module):
# Check module args for credentials, then check environment vars
# access_key
ec2_url = module.params.get('ec2_url')
access_key = module.params.get('aws_access_key')
secret_key = module.params.get('aws_secret_key')
security_token = module.params.get('security_token')
region = module.params.get('region')
profile_name = module.params.get('profile')
validate_certs = module.params.get('validate_certs')
if not ec2_url:
if 'AWS_URL' in os.environ:
ec2_url = os.environ['AWS_URL']
elif 'EC2_URL' in os.environ:
ec2_url = os.environ['EC2_URL']
if not access_key:
if 'AWS_ACCESS_KEY_ID' in os.environ:
access_key = os.environ['AWS_ACCESS_KEY_ID']
elif 'AWS_ACCESS_KEY' in os.environ:
access_key = os.environ['AWS_ACCESS_KEY']
elif 'EC2_ACCESS_KEY' in os.environ:
access_key = os.environ['EC2_ACCESS_KEY']
else:
# in case access_key came in as empty string
access_key = None
if not secret_key:
if 'AWS_SECRET_ACCESS_KEY' in os.environ:
secret_key = os.environ['AWS_SECRET_ACCESS_KEY']
elif 'AWS_SECRET_KEY' in os.environ:
secret_key = os.environ['AWS_SECRET_KEY']
elif 'EC2_SECRET_KEY' in os.environ:
secret_key = os.environ['EC2_SECRET_KEY']
else:
# in case secret_key came in as empty string
secret_key = None
if not region:
if 'AWS_REGION' in os.environ:
region = os.environ['AWS_REGION']
elif 'EC2_REGION' in os.environ:
region = os.environ['EC2_REGION']
else:
# boto.config.get returns None if config not found
region = boto.config.get('Boto', 'aws_region')
if not region:
region = boto.config.get('Boto', 'ec2_region')
if not security_token:
if 'AWS_SECURITY_TOKEN' in os.environ:
security_token = os.environ['AWS_SECURITY_TOKEN']
elif 'EC2_SECURITY_TOKEN' in os.environ:
security_token = os.environ['EC2_SECURITY_TOKEN']
else:
# in case security_token came in as empty string
security_token = None
boto_params = dict(aws_access_key_id=access_key,
aws_secret_access_key=secret_key,
security_token=security_token)
# profile_name only works as a key in boto >= 2.24
# so only set profile_name if passed as an argument
if profile_name:
if not boto_supports_profile_name():
module.fail_json("boto does not support profile_name before 2.24")
boto_params['profile_name'] = profile_name
if validate_certs and HAS_LOOSE_VERSION and LooseVersion(boto.Version) >= LooseVersion("2.6.0"):
boto_params['validate_certs'] = validate_certs
return region, ec2_url, boto_params
def get_ec2_creds(module):
''' for compatibility mode with old modules that don't/can't yet
use ec2_connect method '''
region, ec2_url, boto_params = get_aws_connection_info(module)
return ec2_url, boto_params['aws_access_key_id'], boto_params['aws_secret_access_key'], region
def boto_fix_security_token_in_profile(conn, profile_name):
''' monkey patch for boto issue boto/boto#2100 '''
profile = 'profile ' + profile_name
if boto.config.has_option(profile, 'aws_security_token'):
conn.provider.set_security_token(boto.config.get(profile, 'aws_security_token'))
return conn
def connect_to_aws(aws_module, region, **params):
conn = aws_module.connect_to_region(region, **params)
if not conn:
if region not in [aws_module_region.name for aws_module_region in aws_module.regions()]:
raise StandardError("Region %s does not seem to be available for aws module %s. If the region definitely exists, you may need to upgrade boto or extend with endpoints_path" % (region, aws_module.__name__))
else:
raise StandardError("Unknown problem connecting to region %s for aws module %s." % (region, aws_module.__name__))
if params.get('profile_name'):
conn = boto_fix_security_token_in_profile(conn, params['profile_name'])
return conn
def ec2_connect(module):
""" Return an ec2 connection"""
region, ec2_url, boto_params = get_aws_connection_info(module)
# If we have a region specified, connect to its endpoint.
if region:
try:
ec2 = connect_to_aws(boto.ec2, region, **boto_params)
except (boto.exception.NoAuthHandlerFound, StandardError), e:
module.fail_json(msg=str(e))
# Otherwise, no region so we fallback to the old connection method
elif ec2_url:
try:
ec2 = boto.connect_ec2_endpoint(ec2_url, **boto_params)
except (boto.exception.NoAuthHandlerFound, StandardError), e:
module.fail_json(msg=str(e))
else:
module.fail_json(msg="Either region or ec2_url must be specified")
return ec2