57 lines
1.4 KiB
Ruby
57 lines
1.4 KiB
Ruby
#
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# Copyright (C) 2015 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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class TempCache
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# tl;dr wrap code around an `enable` block
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# and then cache pieces that would otherwise get called over and over again
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def self.enable
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if @enabled
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yield
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else
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begin
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clear
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@enabled = true
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yield
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ensure
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@enabled = false
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clear
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end
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end
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end
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def self.clear
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@cache = {}
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end
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def self.create_key(*args)
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args.map{|arg| arg.is_a?(ActiveRecord::Base) ? arg.global_asset_string : arg.to_s }.join("/")
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end
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def self.cache(*args)
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if @enabled
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key = create_key(*args)
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if @cache.has_key?(key)
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@cache[key]
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else
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@cache[key] = yield
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end
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else
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yield
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end
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end
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end
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