9928edb42d
This patch adjusts most of the logic handling the calls to the controller in the BigSwitch/floodlight plugin to make use of the db rollbacks from sqlalchemy for free on exceptions. This eliminates several complex try-except blocks and makes maintaining db<->controller consistency easier. Fixes: bug #1215823 Change-Id: Ia636c40e744b3b1c543e891791bf492df4f675d2
97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Big Switch Networks, Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Kevin Benton, <kevin.benton@bigswitch.com>
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#
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class HTTPResponseMock():
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status = 200
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reason = 'OK'
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def __init__(self, sock, debuglevel=0, strict=0, method=None,
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buffering=False):
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pass
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def read(self):
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return "{'status': '200 OK'}"
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class HTTPResponseMock404(HTTPResponseMock):
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status = 404
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reason = 'Not Found'
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def read(self):
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return "{'status': '404 Not Found'}"
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class HTTPResponseMock500(HTTPResponseMock):
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status = 500
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reason = 'Internal Server Error'
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def __init__(self, sock, debuglevel=0, strict=0, method=None,
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buffering=False, errmsg='500 Internal Server Error'):
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self.errmsg = errmsg
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def read(self):
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return "{'status': '%s'}" % self.errmsg
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class HTTPConnectionMock():
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def __init__(self, server, port, timeout):
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self.response = None
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self.broken = False
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# Port 9000 is the broken server
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if port == 9000:
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self.broken = True
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errmsg = "This server is broken, please try another"
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self.response = HTTPResponseMock500(None, errmsg=errmsg)
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def request(self, action, uri, body, headers):
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if self.broken and "ExceptOnBadServer" in uri:
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raise Exception("Broken server got an unexpected request")
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if self.response:
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return
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# detachment may return 404 and plugin shouldn't die
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if uri.endswith('attachment') and action == 'DELETE':
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self.response = HTTPResponseMock404(None)
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else:
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self.response = HTTPResponseMock(None)
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# Port creations/updates must contain binding information
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if ('port' in uri and 'attachment' not in uri
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and 'binding' not in body and action in ('POST', 'PUT')):
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errmsg = "Port binding info missing in port request '%s'" % body
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self.response = HTTPResponseMock500(None, errmsg=errmsg)
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return
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return
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def getresponse(self):
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return self.response
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def close(self):
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pass
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class HTTPConnectionMock500(HTTPConnectionMock):
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def __init__(self, server, port, timeout):
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self.response = HTTPResponseMock500(None)
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self.broken = True
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