48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
# Copyright (c) 2010-2012 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from webob import Request, Response
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class HealthCheckMiddleware(object):
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"""
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Healthcheck middleware used for monitoring.
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If the path is /healthcheck, it will respond with "OK" in the body
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"""
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def __init__(self, app, *args, **kwargs):
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self.app = app
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def GET(self, req):
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"""Returns a 200 response with "OK" in the body."""
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return Response(request=req, body="OK", content_type="text/plain")
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def __call__(self, env, start_response):
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req = Request(env)
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try:
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if req.path == '/healthcheck':
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return self.GET(req)(env, start_response)
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except UnicodeError:
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# definitely, this is not /healthcheck
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pass
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return self.app(env, start_response)
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def filter_factory(global_conf, **local_conf):
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def healthcheck_filter(app):
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return HealthCheckMiddleware(app)
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return healthcheck_filter
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