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Diffstat (limited to 'share/common/utils/aai_cache.py')
| -rw-r--r-- | share/common/utils/aai_cache.py | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/share/common/utils/aai_cache.py b/share/common/utils/aai_cache.py new file mode 100644 index 00000000..53298bb8 --- /dev/null +++ b/share/common/utils/aai_cache.py @@ -0,0 +1,53 @@ +# Copyright (c) 2017-2018 Wind River Systems, Inc. +# +# 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. + +import json +import logging +from django.core.cache import cache + +logger = logging.getLogger(__name__) + +# note: memcached key length should be < 250, the value < 1MB + +def flush_cache_by_url(resource_url): + try: + cache.delete("AAI_" + resource_url) + except: + pass # silently drop any exception + + +def get_cache_by_url(resource_url): + try: + if (filter_cache_by_url(resource_url)): + value = cache.get("AAI_" + resource_url) + return json.loads(value) if value else None + else: + return None + except: + return None + + +def set_cache_by_url(resource_url, resource_in_json): + try: + # filter out unmanaged AAI resource + if filter_cache_by_url(resource_url): + # cache the resource for 24 hours + logger.debug("Cache the resource: "+ resource_url) + cache.set("AAI_" + resource_url, json.dumps(resource_in_json), 3600 * 24) + except: + pass + +def filter_cache_by_url(resource_url): + # hardcoded filter: cloud region only + if resource_url.find(r"cloud-infrastructure/cloud-regions/cloud-region") > 0: + return True + else: + return False
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