39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
# Copyright 2019 The Armada Authors.
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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 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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import falcon
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import prometheus_client
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from armada import api
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from armada.handlers import metrics
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class Metrics(api.BaseResource):
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'''Controller for exporting prometheus metrics.
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'''
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def on_get(self, req, resp):
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encoder, content_type = prometheus_client.exposition.choose_encoder(
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req.get_header('Accept'))
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try:
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output = encoder(metrics.REGISTRY)
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except Exception as ex:
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err_message = 'Failed to generate metric output'
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self.logger.error(err_message, exc_info=ex)
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return self.return_error(
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resp, falcon.HTTP_500, message=err_message)
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resp.content_type = content_type
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resp.body = output
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resp.status = falcon.HTTP_200
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