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|
require "json"
require "fileutils"
require "tempfile"
module Vagrant
module Plugin
# This is a helper to deal with the plugin state file that Vagrant
# uses to track what plugins are installed and activated and such.
class StateFile
# @return [Pathname] path to file
attr_reader :path
def initialize(path, system = false)
@path = path
@system = system
@data = {}
if @path.exist?
begin
@data = JSON.parse(@path.read)
rescue JSON::ParserError => e
raise Vagrant::Errors::PluginStateFileParseError,
path: path, message: e.message
end
upgrade_v0! if !@data["version"]
end
@data["version"] ||= "1"
@data["installed"] ||= {}
load_extra_plugins
end
def load_extra_plugins
extra_plugins = Dir.glob(@path.dirname.join('plugins.d', '*.json'))
extra_plugins.each do |filename|
json = File.read(filename)
begin
plugin_data = JSON.parse(json)
@data["installed"].merge!(plugin_data)
rescue JSON::ParserError => e
raise Vagrant::Errors::PluginStateFileParseError,
path: filename, message: e.message
end
end
end
# Add a plugin that is installed to the state file.
#
# @param [String] name The name of the plugin
def add_plugin(name, **opts)
@data["installed"][name] = {
"ruby_version" => RUBY_VERSION,
"vagrant_version" => Vagrant::VERSION,
"gem_version" => opts[:version] || "",
"require" => opts[:require] || "",
"sources" => opts[:sources] || [],
"installed_gem_version" => opts[:installed_gem_version],
"env_local" => !!opts[:env_local]
}
save!
end
# Adds a RubyGems index source to look up gems.
#
# @param [String] url URL of the source.
def add_source(url)
@data["sources"] ||= []
@data["sources"] << url if !@data["sources"].include?(url)
save!
end
# This returns a hash of installed plugins according to the state
# file. Note that this may _not_ directly match over to actually
# installed gems.
#
# @return [Hash]
def installed_plugins
@data["installed"]
end
# Returns true/false if the plugin is present in this state file.
#
# @return [Boolean]
def has_plugin?(name)
@data["installed"].key?(name)
end
# Remove a plugin that is installed from the state file.
#
# @param [String] name The name of the plugin.
def remove_plugin(name)
@data["installed"].delete(name)
save!
end
# Remove a source for RubyGems.
#
# @param [String] url URL of the source
def remove_source(url)
@data["sources"] ||= []
@data["sources"].delete(url)
save!
end
# Returns the list of RubyGems sources that will be searched for
# plugins.
#
# @return [Array<String>]
def sources
@data["sources"] || []
end
# This saves the state back into the state file.
def save!
Tempfile.open(@path.basename.to_s, @path.dirname.to_s) do |f|
f.binmode
f.write(JSON.dump(@data))
f.fsync
f.chmod(0644)
f.close
FileUtils.mv(f.path, @path)
end
rescue Errno::EACCES
# Ignore permission denied against system-installed plugins; regular
# users are not supposed to write there.
raise unless @system
end
protected
# This upgrades the internal data representation from V0 (the initial
# version) to V1.
def upgrade_v0!
@data["version"] = "1"
new_installed = {}
(@data["installed"] || []).each do |plugin|
new_installed[plugin] = {
"ruby_version" => "0",
"vagrant_version" => "0",
}
end
@data["installed"] = new_installed
save!
end
end
end
end
|
