84 lines
1.5 KiB
Ruby
84 lines
1.5 KiB
Ruby
require 'digest/sha1'
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module Jasmine::Headless
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class CacheableAction
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class << self
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def enabled=(bool)
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@enabled = bool
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end
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def enabled?
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@enabled = true if @enabled == nil
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@enabled
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end
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def cache_type
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raise ArgumentError.new("No cache type defined for #{self.name}") if @cache_type == nil
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@cache_type
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end
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def cache_type=(type)
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@cache_type = type
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end
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def cache_dir=(dir)
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@cache_dir = dir
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end
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def cache_dir
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@cache_dir ||= '.jhw-cache'
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end
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def for(file)
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new(file).handle
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end
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end
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attr_reader :file
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def initialize(file)
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@file = file
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end
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def handle
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if CacheableAction.enabled?
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if fresh?
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unserialize(File.read(cache_file))
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else
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result = action
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FileUtils.mkdir_p File.split(cache_file).first
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File.open(cache_file, 'wb') { |fh| fh.print serialize(result) }
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result
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end
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else
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action
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end
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end
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def cache_file
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@cache_file ||= File.join(self.class.cache_dir, self.class.cache_type, Digest::SHA1.hexdigest(file)) + '.js'
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end
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def fresh?
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cached? && (File.mtime(file) < File.mtime(cache_file))
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end
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def cached?
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File.exist?(cache_file)
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end
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def action
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raise StandardError.new("Override action")
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end
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def serialize(data)
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data
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end
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def unserialize(data)
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data
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end
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end
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end
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