Class: OpenC3::GemModel

Inherits:
Object show all
Defined in:
lib/openc3/models/gem_model.rb

Overview

This class acts like a Model but doesn’t inherit from Model because it doesn’t actual interact with the Store (Redis). Instead we implement names, get, put and destroy to allow interaction with gem files from the PluginModel and the GemsController.

Class Method Summary collapse

Class Method Details

.destroy(name) ⇒ Object 



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# File 'lib/openc3/models/gem_model.rb', line 96

def self.destroy(name)
  gem_name, version = self.extract_name_and_version(name)
  plugin_gem_names = PluginModel.gem_names
  if plugin_gem_names.include?(name)
    message = "Gem file #{name} can't be uninstalled because needed by installed plugin"
    Logger.error message
    raise message
  else
    begin
      Gem::Uninstaller.new(gem_name, {:version => version, :force => true}).uninstall
    rescue => err
      Logger.error "Gem file #{name} error uninstalling\n#{err.formatted}"
      raise err
    end
  end
end

.extract_name_and_version(name) ⇒ Object 



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# File 'lib/openc3/models/gem_model.rb', line 113

def self.extract_name_and_version(name)
  split_name = name.split('-')
  gem_name = split_name[0..-2].join('-')
  version = File.basename(split_name[-1], '.gem')
  return gem_name, version
end

.get(name) ⇒ Object 



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# File 'lib/openc3/models/gem_model.rb', line 44

def self.get(name)
  path = "#{ENV['GEM_HOME']}/cache/#{name}"
  return path if File.exist?(path)
  raise "Gem #{name} not found"
end

.install(name_or_path, scope:) ⇒ Object 



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# File 'lib/openc3/models/gem_model.rb', line 68

def self.install(name_or_path, scope:)
  if File.exist?(name_or_path)
    gem_file_path = name_or_path
  else
    gem_file_path = get(name_or_path)
  end
  begin
    rubygems_url = get_setting('rubygems_url', scope: scope)
  rescue
    # If Redis isn't running try the ENV, then simply rubygems.org
    rubygems_url = ENV['RUBYGEMS_URL']
    rubygems_url ||= 'https://rubygems.org'
  end
  Gem.sources = [rubygems_url] if rubygems_url
  Gem.done_installing_hooks.clear
  begin
    # Look for local gems only first, this avoids lengthly timeouts when checking rubygems in airgap env
    Gem.install(gem_file_path, "> 0.pre", build_args: ['--no-document'], prerelease: true, domain: :local)
  rescue Gem::Exception => err
    # If there is a failure look for both local and remote gems
    Gem.install(gem_file_path, "> 0.pre", build_args: ['--no-document'], prerelease: true, domain: :both)
  end
rescue => err
  message = "Gem file #{gem_file_path} error installing to #{ENV['GEM_HOME']}\n#{err.formatted}"
  Logger.error message
  raise err
end

.names ⇒ Object 



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# File 'lib/openc3/models/gem_model.rb', line 39

def self.names
  result = Pathname.new("#{ENV['GEM_HOME']}/gems").children.select { |c| c.directory? }.collect { |p| File.basename(p) + '.gem' }
  return result.sort
end

.put(gem_file_path, gem_install: true, scope:) ⇒ Object 



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# File 'lib/openc3/models/gem_model.rb', line 50

def self.put(gem_file_path, gem_install: true, scope:)
  if File.file?(gem_file_path)
    gem_filename = File.basename(gem_file_path)
    FileUtils.mkdir_p("#{ENV['GEM_HOME']}/cache") unless Dir.exist?("#{ENV['GEM_HOME']}/cache")
    FileUtils.cp(gem_file_path, "#{ENV['GEM_HOME']}/cache/#{File.basename(gem_file_path)}")
    if gem_install
      Logger.info "Installing gem: #{gem_filename}"
      result = OpenC3::ProcessManager.instance.spawn(["ruby", "/openc3/bin/openc3cli", "geminstall", gem_filename, scope], "gem_install", gem_filename, Time.now + 3600.0, scope: scope)
      return result
    end
  else
    message = "Gem file #{gem_file_path} does not exist!"
    Logger.error message
    raise message
  end
  return nil
end