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# Copyright 2012-2013 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.
import logging
import os
import requests
from awscli.compat import six
from awscli.compat import compat_open
logger = logging.getLogger(__name__)
# These are special cased arguments that do _not_ get the
# special param file processing. This is typically because it
# refers to an actual URI of some sort and we don't want to actually
# download the content (i.e TemplateURL in cloudformation).
PARAMFILE_DISABLED = set([
'apigateway.put-integration.uri',
'appstream2.create-stack.redirect-url',
'appstream2.update-stack.redirect-url',
'cloudformation.create-stack.template-url',
'cloudformation.update-stack.template-url',
'cloudformation.create-stack-set.template-url',
'cloudformation.update-stack-set.template-url',
'cloudformation.create-change-set.template-url',
'cloudformation.validate-template.template-url',
'cloudformation.estimate-template-cost.template-url',
'cloudformation.get-template-summary.template-url',
'cloudformation.create-stack.stack-policy-url',
'cloudformation.update-stack.stack-policy-url',
'cloudformation.set-stack-policy.stack-policy-url',
# aws cloudformation package --template-file
'custom.package.template-file',
# aws cloudformation deploy --template-file
'custom.deploy.template-file',
'cloudformation.update-stack.stack-policy-during-update-url',
# We will want to change the event name to ``s3`` as opposed to
# custom in the near future along with ``s3`` to ``s3api``.
'custom.cp.website-redirect',
'custom.mv.website-redirect',
'custom.sync.website-redirect',
'guardduty.create-ip-set.location',
'guardduty.update-ip-set.location',
'guardduty.create-threat-intel-set.location',
'guardduty.update-threat-intel-set.location',
'comprehend.detect-dominant-language.text',
'comprehend.batch-detect-dominant-language.text-list',
'comprehend.detect-entities.text',
'comprehend.batch-detect-entities.text-list',
'comprehend.detect-key-phrases.text',
'comprehend.batch-detect-key-phrases.text-list',
'comprehend.detect-sentiment.text',
'comprehend.batch-detect-sentiment.text-list',
'iam.create-open-id-connect-provider.url',
'machinelearning.predict.predict-endpoint',
'rds.copy-db-cluster-snapshot.pre-signed-url',
'rds.create-db-cluster.pre-signed-url',
'rds.copy-db-snapshot.pre-signed-url',
'rds.create-db-instance-read-replica.pre-signed-url',
'sqs.add-permission.queue-url',
'sqs.change-message-visibility.queue-url',
'sqs.change-message-visibility-batch.queue-url',
'sqs.delete-message.queue-url',
'sqs.delete-message-batch.queue-url',
'sqs.delete-queue.queue-url',
'sqs.get-queue-attributes.queue-url',
'sqs.list-dead-letter-source-queues.queue-url',
'sqs.receive-message.queue-url',
'sqs.remove-permission.queue-url',
'sqs.send-message.queue-url',
'sqs.send-message-batch.queue-url',
'sqs.set-queue-attributes.queue-url',
'sqs.purge-queue.queue-url',
'sqs.list-queue-tags.queue-url',
'sqs.tag-queue.queue-url',
'sqs.untag-queue.queue-url',
's3.copy-object.website-redirect-location',
's3.create-multipart-upload.website-redirect-location',
's3.put-object.website-redirect-location',
# Double check that this has been renamed!
'sns.subscribe.notification-endpoint',
'iot.create-job.document-source',
'translate.translate-text.text',
'workdocs.create-notification-subscription.notification-endpoint',
])
class ResourceLoadingError(Exception):
pass
def get_paramfile(path):
"""Load parameter based on a resource URI.
It is possible to pass parameters to operations by referring
to files or URI's. If such a reference is detected, this
function attempts to retrieve the data from the file or URI
and returns it. If there are any errors or if the ``path``
does not appear to refer to a file or URI, a ``None`` is
returned.
:type path: str
:param path: The resource URI, e.g. file://foo.txt. This value
may also be a non resource URI, in which case ``None`` is returned.
:return: The loaded value associated with the resource URI.
If the provided ``path`` is not a resource URI, then a
value of ``None`` is returned.
"""
data = None
if isinstance(path, six.string_types):
for prefix, function_spec in PREFIX_MAP.items():
if path.startswith(prefix):
function, kwargs = function_spec
data = function(prefix, path, **kwargs)
return data
def get_file(prefix, path, mode):
file_path = os.path.expandvars(os.path.expanduser(path[len(prefix):]))
try:
with compat_open(file_path, mode) as f:
return f.read()
except UnicodeDecodeError:
raise ResourceLoadingError(
'Unable to load paramfile (%s), text contents could '
'not be decoded. If this is a binary file, please use the '
'fileb:// prefix instead of the file:// prefix.' % file_path)
except (OSError, IOError) as e:
raise ResourceLoadingError('Unable to load paramfile %s: %s' % (
path, e))
def get_uri(prefix, uri):
try:
r = requests.get(uri)
if r.status_code == 200:
return r.text
else:
raise ResourceLoadingError(
"received non 200 status code of %s" % (
r.status_code))
except Exception as e:
raise ResourceLoadingError('Unable to retrieve %s: %s' % (uri, e))
PREFIX_MAP = {
'file://': (get_file, {'mode': 'r'}),
'fileb://': (get_file, {'mode': 'rb'}),
'http://': (get_uri, {}),
'https://': (get_uri, {}),
}
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