diff options
Diffstat (limited to 'puppet/modules/stdlib/lib/puppet/parser/functions/validate_cmd.rb')
-rw-r--r-- | puppet/modules/stdlib/lib/puppet/parser/functions/validate_cmd.rb | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/lib/puppet/parser/functions/validate_cmd.rb b/puppet/modules/stdlib/lib/puppet/parser/functions/validate_cmd.rb new file mode 100644 index 00000000..5df3c609 --- /dev/null +++ b/puppet/modules/stdlib/lib/puppet/parser/functions/validate_cmd.rb @@ -0,0 +1,63 @@ +require 'puppet/util/execution' +require 'tempfile' + +module Puppet::Parser::Functions + newfunction(:validate_cmd, :doc => <<-'ENDHEREDOC') do |args| + Perform validation of a string with an external command. + The first argument of this function should be a string to + test, and the second argument should be a path to a test command + taking a % as a placeholder for the file path (will default to the end). + If the command, launched against a tempfile containing the passed string, + returns a non-null value, compilation will abort with a parse error. + + If a third argument is specified, this will be the error message raised and + seen by the user. + + A helpful error message can be returned like this: + + Example: + + # Defaults to end of path + validate_cmd($sudoerscontent, '/usr/sbin/visudo -c -f', 'Visudo failed to validate sudoers content') + + # % as file location + validate_cmd($haproxycontent, '/usr/sbin/haproxy -f % -c', 'Haproxy failed to validate config content') + + ENDHEREDOC + if (args.length < 2) or (args.length > 3) then + raise Puppet::ParseError, ("validate_cmd(): wrong number of arguments (#{args.length}; must be 2 or 3)") + end + + msg = args[2] || "validate_cmd(): failed to validate content with command #{args[1].inspect}" + + content = args[0] + checkscript = args[1] + + # Test content in a temporary file + tmpfile = Tempfile.new("validate_cmd") + begin + tmpfile.write(content) + tmpfile.close + + if checkscript =~ /\s%(\s|$)/ + check_with_correct_location = checkscript.gsub(/%/,tmpfile.path) + else + check_with_correct_location = "#{checkscript} #{tmpfile.path}" + end + + if Puppet::Util::Execution.respond_to?('execute') + Puppet::Util::Execution.execute(check_with_correct_location) + else + Puppet::Util.execute(check_with_correct_location) + end + rescue Puppet::ExecutionFailure => detail + msg += "\n#{detail}" + raise Puppet::ParseError, msg + rescue Exception => detail + msg += "\n#{detail.class.name} #{detail}" + raise Puppet::ParseError, msg + ensure + tmpfile.unlink + end + end +end |