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55 lines
1.4 KiB
55 lines
1.4 KiB
4 years ago
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require 'redis'
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require 'json'
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class CommonDataRedisCache
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# This needs to be changed whenever there're changes in the code that require invalidation of old keys
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VERSION = '1'
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def initialize(redis_cache = $tables_metadata)
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@redis = redis_cache
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end
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def get(is_https_request)
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key = key(is_https_request)
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value = redis.get(key)
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if value.present?
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return JSON.parse(value, symbolize_names: true)
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else
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return nil
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end
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rescue Redis::BaseError => exception
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CartoDB.notify_exception(exception, { key: key })
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nil
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end
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def set(is_https_request, response_headers, response_body)
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serialized = JSON.generate({headers: response_headers,
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body: response_body.force_encoding('utf-8')
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})
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redis.setex(key(is_https_request), 6.hours.to_i, serialized)
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rescue Redis::BaseError => exception
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CartoDB.notify_exception(exception, { key: key, headers: response_headers, body: response_body })
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nil
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end
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def invalidate
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redis.del [key(is_https_request=true), key(is_https_request=false)]
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rescue Redis::BaseError => exception
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CartoDB.notify_exception(exception)
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nil
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end
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def key(is_https_request=false)
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protocol = is_https_request ? 'https' : 'http'
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"common_data:request:#{protocol}:#{VERSION}"
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end
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private
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def redis
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@redis
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end
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end
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