05568420c0
Rather than using the name of the keg for the key use the full path. This provides several advantages: - there's no need to invalidate the cache on a `brew upgrade` or `brew switch` - it's easier to figure out what cache entries can be removed and this can be done whenever a keg is removed by `brew uninstall` or `brew cleanup`. Also, ensure that an `install` (or `reinstall`, `upgrade`) always results in the cache being rebuilt for that keg (in case different options were used).
73 lines
1.8 KiB
Ruby
73 lines
1.8 KiB
Ruby
require "set"
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require "cache_store"
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#
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# `LinkageCacheStore` provides methods to fetch and mutate linkage-specific data used
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# by the `brew linkage` command
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#
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class LinkageCacheStore < CacheStore
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# @param [String] keg_path
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# @param [CacheStoreDatabase] database
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# @return [nil]
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def initialize(keg_path, database)
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@keg_path = keg_path
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super(database)
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end
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# Returns `true` if the database has any value for the current `keg_path`
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#
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# @return [Boolean]
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def keg_exists?
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!database.get(@keg_path).nil?
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end
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# Inserts dylib-related information into the cache if it does not exist or
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# updates data into the linkage cache if it does exist
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#
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# @param [Hash] hash_values: hash containing KVPs of { :type => Hash }
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# @return [nil]
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def update!(hash_values)
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hash_values.each_key do |type|
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next if HASH_LINKAGE_TYPES.include?(type)
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raise TypeError, <<~EOS
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Can't update types that are not defined for the linkage store
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EOS
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end
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database.set @keg_path, ruby_hash_to_json_string(hash_values)
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end
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# @param [Symbol] the type to fetch from the `LinkageCacheStore`
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# @raise [TypeError] error if the type is not in `HASH_LINKAGE_TYPES`
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# @return [Hash]
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def fetch_type(type)
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unless HASH_LINKAGE_TYPES.include?(type)
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raise TypeError, <<~EOS
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Can't fetch types that are not defined for the linkage store
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EOS
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end
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return {} unless keg_exists?
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fetch_hash_values(type)
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end
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# @return [nil]
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def flush_cache!
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database.delete(@keg_path)
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end
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private
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HASH_LINKAGE_TYPES = [:keg_files_dylibs].freeze
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# @param [Symbol] type
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# @return [Hash]
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def fetch_hash_values(type)
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keg_cache = database.get(@keg_path)
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return {} unless keg_cache
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json_string_to_ruby_hash(keg_cache)[type.to_s]
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end
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end
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