Initial commit

parkingkonceptvenv/lib/python3.7/site-packages/botocore/translate.py

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+# Copyright (c) 2012-2013 Mitch Garnaat http://garnaat.org/
+# Copyright 2012-2016 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 copy
+
+from botocore.utils import merge_dicts
+
+
+def build_retry_config(endpoint_prefix, retry_model, definitions,
+                       client_retry_config=None):
+    service_config = retry_model.get(endpoint_prefix, {})
+    resolve_references(service_config, definitions)
+    # We want to merge the global defaults with the service specific
+    # defaults, with the service specific defaults taking precedence.
+    # So we use the global defaults as the base.
+    #
+    # A deepcopy is done on the retry defaults because it ensures the
+    # retry model has no chance of getting mutated when the service specific
+    # configuration or client retry config is merged in.
+    final_retry_config = {
+        '__default__': copy.deepcopy(retry_model.get('__default__', {}))
+    }
+    resolve_references(final_retry_config, definitions)
+    # The merge the service specific config on top.
+    merge_dicts(final_retry_config, service_config)
+    if client_retry_config is not None:
+        _merge_client_retry_config(final_retry_config, client_retry_config)
+    return final_retry_config
+
+
+def _merge_client_retry_config(retry_config, client_retry_config):
+    max_retry_attempts_override = client_retry_config.get('max_attempts')
+    if max_retry_attempts_override is not None:
+        # In the retry config, the max_attempts refers to the maximum number
+        # of requests in general will be made. However, for the client's
+        # retry config it refers to how many retry attempts will be made at
+        # most. So to translate this number from the client config, one is
+        # added to convert it to the maximum number request that will be made
+        # by including the initial request.
+        #
+        # It is also important to note that if we ever support per operation
+        # configuration in the retry model via the client, we will need to
+        # revisit this logic to make sure max_attempts gets applied
+        # per operation.
+        retry_config['__default__'][
+            'max_attempts'] = max_retry_attempts_override + 1
+
+
+def resolve_references(config, definitions):
+    """Recursively replace $ref keys.
+
+    To cut down on duplication, common definitions can be declared
+    (and passed in via the ``definitions`` attribute) and then
+    references as {"$ref": "name"}, when this happens the reference
+    dict is placed with the value from the ``definition`` dict.
+
+    This is recursively done.
+
+    """
+    for key, value in config.items():
+        if isinstance(value, dict):
+            if len(value) == 1 and list(value.keys())[0] == '$ref':
+                # Then we need to resolve this reference.
+                config[key] = definitions[list(value.values())[0]]
+            else:
+                resolve_references(value, definitions)