76 lines
2.7 KiB
Ruby
76 lines
2.7 KiB
Ruby
module Vagrant
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module Config
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module V2
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# This is the root configuration class. An instance of this is what
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# is passed into version 1 Vagrant configuration blocks.
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class Root
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# Initializes a root object that maps the given keys to specific
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# configuration classes.
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#
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# @param [Hash] config_map Map of key to config class.
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def initialize(config_map, keys=nil)
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@keys = keys || {}
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@config_map = config_map
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end
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# We use method_missing as a way to get the configuration that is
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# used for Vagrant and load the proper configuration classes for
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# each.
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def method_missing(name, *args)
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return @keys[name] if @keys.has_key?(name)
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config_klass = @config_map[name.to_sym]
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if config_klass
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# Instantiate the class and return the instance
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@keys[name] = config_klass.new
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return @keys[name]
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else
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# Super it up to probably raise a NoMethodError
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super
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end
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end
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# Called to finalize this object just prior to it being used by
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# the Vagrant system. The "!" signifies that this is expected to
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# mutate itself.
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def finalize!
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@keys.each do |_key, instance|
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instance.finalize!
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end
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end
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# Validates the configuration classes of this instance and raises an
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# exception if they are invalid. If you are implementing a custom configuration
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# class, the method you want to implement is {Base#validate}. This is
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# the method that checks all the validation, not one which defines
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# validation rules.
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def validate!(env)
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# Validate each of the configured classes and store the results into
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# a hash.
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errors = @keys.inject({}) do |container, data|
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key, instance = data
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recorder = ErrorRecorder.new
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instance.validate(env, recorder)
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container[key.to_sym] = recorder if !recorder.errors.empty?
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container
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end
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return if errors.empty?
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raise Errors::ConfigValidationFailed, :messages => Util::TemplateRenderer.render("config/validation_failed", :errors => errors)
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end
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# Returns the internal state of the root object. This is used
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# by outside classes when merging, and shouldn't be called directly.
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# Note the strange method name is to attempt to avoid any name
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# clashes with potential configuration keys.
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def __internal_state
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{
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"config_map" => @config_map,
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"keys" => @keys
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}
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end
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end
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end
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end
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end
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