103 lines
2.9 KiB
Ruby
103 lines
2.9 KiB
Ruby
require 'fileutils'
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require "json"
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require "log4r"
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require "vagrant/util/platform"
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require "vagrant/util/safe_chdir"
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require "vagrant/util/subprocess"
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module Vagrant
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# Represents a "box," which is a package Vagrant environment that is used
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# as a base image when creating a new guest machine.
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class Box
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include Comparable
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# The box name. This is the logical name used when adding the box.
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#
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# @return [String]
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attr_reader :name
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# This is the provider that this box is built for.
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#
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# @return [Symbol]
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attr_reader :provider
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# This is the directory on disk where this box exists.
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#
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# @return [Pathname]
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attr_reader :directory
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# This is the metadata for the box. This is read from the "metadata.json"
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# file that all boxes require.
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#
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# @return [Hash]
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attr_reader :metadata
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# This is used to initialize a box.
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#
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# @param [String] name Logical name of the box.
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# @param [Symbol] provider The provider that this box implements.
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# @param [Pathname] directory The directory where this box exists on
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# disk.
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def initialize(name, provider, directory)
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@name = name
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@provider = provider
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@directory = directory
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metadata_file = directory.join("metadata.json")
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raise Errors::BoxMetadataFileNotFound, :name => @name if !metadata_file.file?
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begin
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@metadata = JSON.parse(directory.join("metadata.json").read)
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rescue JSON::ParserError
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raise Errors::BoxMetadataCorrupted, name: @name
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end
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@logger = Log4r::Logger.new("vagrant::box")
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end
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# This deletes the box. This is NOT undoable.
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def destroy!
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# Delete the directory to delete the box.
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FileUtils.rm_r(@directory)
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# Just return true always
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true
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rescue Errno::ENOENT
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# This means the directory didn't exist. Not a problem.
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return true
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end
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# This repackages this box and outputs it to the given path.
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#
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# @param [Pathname] path The full path (filename included) of where
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# to output this box.
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# @return [Boolean] true if this succeeds.
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def repackage(path)
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@logger.debug("Repackaging box '#{@name}' to: #{path}")
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Util::SafeChdir.safe_chdir(@directory) do
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# Find all the files in our current directory and tar it up!
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files = Dir.glob(File.join(".", "**", "*"))
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# Package!
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Util::Subprocess.execute("bsdtar", "-czf", path.to_s, *files)
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end
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@logger.info("Repackaged box '#{@name}' successfully: #{path}")
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true
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end
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# Implemented for comparison with other boxes. Comparison is
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# implemented by comparing names and providers.
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def <=>(other)
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return super if !other.is_a?(self.class)
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# Comparison is done by composing the name and provider
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"#{@name}-#{@provider}" <=> "#{other.name}-#{other.provider}"
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end
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end
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end
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