vFW and vDNS support added to azure-plugin

[multicloud/azure.git] / azure / aria / aria-extension-cloudify / src / aria / aria / parser / consumption / context.py

diff --git a/azure/aria/aria-extension-cloudify/src/aria/aria/parser/consumption/context.py b/azure/aria/aria-extension-cloudify/src/aria/aria/parser/consumption/context.py
new file mode 100644 (file)
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+++ b/azure/aria/aria-extension-cloudify/src/aria/aria/parser/consumption/context.py
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+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License 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 sys
+import threading
+
+from ...utils import console
+from ..validation import ValidationContext
+from ..loading import LoadingContext
+from ..reading import ReadingContext
+from ..presentation import PresentationContext
+from ..modeling import ModelingContext
+
+
+_thread_locals = threading.local()
+
+
+class ConsumptionContext(object):
+    """
+    Consumption context.
+
+    :ivar args: runtime arguments (usually provided on the command line)
+    :ivar out: message output stream (defaults to stdout)
+    :ivar style: message output style
+    :vartype style: Style
+    :ivar validation: validation context
+    :vartype validation: :class:`ValidationContext`
+    :ivar loading: loading context
+    :vartype loading: :class:`LoadingContext`
+    :ivar reading: reading context
+    :vartype reading: :class:`ReadingContext`
+    :ivar presentation: presentation context
+    :vartype presentation: :class:`PresentationContext`
+    :ivar modeling: modeling context
+    :vartype modeling: :class:`ModelingContext`
+    """
+
+    @staticmethod
+    def get_thread_local():
+        """
+        Gets the context attached to the current thread if there is one.
+        """
+
+        return getattr(_thread_locals, 'aria_consumption_context', None)
+
+    def __init__(self, set_thread_local=True):
+        self.args = []
+        self.out = sys.stdout
+        self.validation = ValidationContext()
+        self.loading = LoadingContext()
+        self.reading = ReadingContext()
+        self.presentation = PresentationContext()
+        self.modeling = ModelingContext()
+        self.style = console.TopologyStylizer()
+
+        if set_thread_local:
+            self.set_thread_local()
+
+    def set_thread_local(self):
+        """
+        Attaches this context to the current thread.
+        """
+
+        _thread_locals.aria_consumption_context = self
+
+    def write(self, string):
+        """
+        Writes to our ``out``, making sure to encode UTF-8 if required.
+        """
+
+        try:
+            self.out.write(string)
+        except UnicodeEncodeError:
+            self.out.write(string.encode('utf8'))
+
+    def has_arg_switch(self, name):
+        name = '--%s' % name
+        return name in self.args
+
+    def get_arg_value(self, name, default=None):
+        name = '--%s=' % name
+        for arg in self.args:
+            if arg.startswith(name):
+                return arg[len(name):]
+        return default
+
+    def get_arg_value_int(self, name, default=None):
+        value = self.get_arg_value(name)
+        if value is not None:
+            try:
+                return int(value)
+            except (TypeError, ValueError):
+                pass
+        return default