Move class into its own file

1 files changed, 126 insertions, 0 deletions

diff --git a/nova/api/ec2/apirequesthandler.py b/nova/api/ec2/apirequesthandler.py
new file mode 100644
index 000000000..bbba60c02
--- /dev/null
+++ b/nova/api/ec2/apirequesthandler.py
@@ -0,0 +1,126 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# 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. 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.
+
+"""
+APIRequestHandler, pulled unmodified out of nova.endpoint.api
+"""
+
+import logging
+
+import tornado.web
+
+from nova import exception
+from nova import utils
+from nova.auth import manager
+
+
+_log = logging.getLogger("api")
+_log.setLevel(logging.DEBUG)
+
+
+class APIRequestHandler(tornado.web.RequestHandler):
+    def get(self, controller_name):
+        self.execute(controller_name)
+
+    @tornado.web.asynchronous
+    def execute(self, controller_name):
+        # Obtain the appropriate controller for this request.
+        try:
+            controller = self.application.controllers[controller_name]
+        except KeyError:
+            self._error('unhandled', 'no controller named %s' % controller_name)
+            return
+
+        args = self.request.arguments
+
+        # Read request signature.
+        try:
+            signature = args.pop('Signature')[0]
+        except:
+            raise tornado.web.HTTPError(400)
+
+        # Make a copy of args for authentication and signature verification.
+        auth_params = {}
+        for key, value in args.items():
+            auth_params[key] = value[0]
+
+        # Get requested action and remove authentication args for final request.
+        try:
+            action = args.pop('Action')[0]
+            access = args.pop('AWSAccessKeyId')[0]
+            args.pop('SignatureMethod')
+            args.pop('SignatureVersion')
+            args.pop('Version')
+            args.pop('Timestamp')
+        except:
+            raise tornado.web.HTTPError(400)
+
+        # Authenticate the request.
+        try:
+            (user, project) = manager.AuthManager().authenticate(
+                access,
+                signature,
+                auth_params,
+                self.request.method,
+                self.request.host,
+                self.request.path
+            )
+
+        except exception.Error, ex:
+            logging.debug("Authentication Failure: %s" % ex)
+            raise tornado.web.HTTPError(403)
+
+        _log.debug('action: %s' % action)
+
+        for key, value in args.items():
+            _log.debug('arg: %s\t\tval: %s' % (key, value))
+
+        request = APIRequest(controller, action)
+        context = APIRequestContext(self, user, project)
+        d = request.send(context, **args)
+        # d.addCallback(utils.debug)
+
+        # TODO: Wrap response in AWS XML format
+        d.addCallbacks(self._write_callback, self._error_callback)
+
+    def _write_callback(self, data):
+        self.set_header('Content-Type', 'text/xml')
+        self.write(data)
+        self.finish()
+
+    def _error_callback(self, failure):
+        try:
+            failure.raiseException()
+        except exception.ApiError as ex:
+            self._error(type(ex).__name__ + "." + ex.code, ex.message)
+        # TODO(vish): do something more useful with unknown exceptions
+        except Exception as ex:
+            self._error(type(ex).__name__, str(ex))
+            raise
+
+    def post(self, controller_name):
+        self.execute(controller_name)
+
+    def _error(self, code, message):
+        self._status_code = 400
+        self.set_header('Content-Type', 'text/xml')
+        self.write('<?xml version="1.0"?>\n')
+        self.write('<Response><Errors><Error><Code>%s</Code>'
+                   '<Message>%s</Message></Error></Errors>'
+                   '<RequestID>?</RequestID></Response>' % (code, message))
+        self.finish()