Class: Facter::Core::Execution::Base
- Inherits:
-
Object
- Object
- Facter::Core::Execution::Base
- Defined in:
- lib/custom_facts/core/execution/base.rb
Overview
Constant Summary collapse
- STDERR_MESSAGE =
'Command %s resulted with the following stderr message: %s'
Instance Method Summary collapse
Instance Method Details
#execute(command, options = {}) ⇒ Object
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# File 'lib/custom_facts/core/execution/base.rb', line 36 def execute(command, = {}) on_fail = .fetch(:on_fail, :raise) = .fetch(:expand, true) logger = [:logger] # Set LC_ALL and LANG to force i18n to C for the duration of this exec; # this ensures that any code that parses the # output of the command can expect it to be in a consistent / predictable format / locale with_env 'LC_ALL' => 'C', 'LANG' => 'C' do = if ! && builtin_command?(command) || logger command else (command) end if .nil? if on_fail == :raise raise Facter::Core::Execution::ExecutionFailure.new, "Could not execute '#{command}': command not found" end return on_fail end execute_command(, on_fail, logger) end end |
#with_env(values) ⇒ Object
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# File 'lib/custom_facts/core/execution/base.rb', line 9 def with_env(values) old = {} values.each do |var, value| # save the old value if it exists if (old_val = ENV[var]) old[var] = old_val end # set the new (temporary) value for the environment variable ENV[var] = value end # execute the caller's block, capture the return value rv = yield # use an ensure block to make absolutely sure we restore the variables ensure # restore the old values values.each do |var, _value| if old.include?(var) ENV[var] = old[var] else # if there was no old value, delete the key from the current environment variables hash ENV.delete(var) end end # return the captured return value rv end |