33 lines
959 B
Ruby
33 lines
959 B
Ruby
module Vagrant
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# The Vagrant data store is a key-value store which is persisted
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# as JSON in a local file which is specified in the initializer.
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# The data store itself is accessed via typical hash accessors: `[]`
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# and `[]=`. If a key is set to `nil`, then it is removed from the
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# datastore. The data store is only updated on disk when {commit}
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# is called on the data store itself.
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class DataStore < Hash
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attr_reader :file_path
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def initialize(file_path)
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@file_path = file_path
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return if !file_path
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File.open(file_path, "r") do |f|
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merge!(JSON.parse(f.read, :symbolize_names => true))
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end
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rescue Errno::ENOENT
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clear
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end
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# Commits any changes to the data to disk. Even if the data
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# hasn't changed, it will be reserialized and written to disk.
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def commit
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return if !file_path
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File.open(file_path, "w") do |f|
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f.write(to_json)
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end
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end
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end
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end
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