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| -rw-r--r-- | README.markdown | 14 | ||||
| -rw-r--r-- | lib/puppet/parser/functions/pry.rb | 30 |
2 files changed, 44 insertions, 0 deletions
diff --git a/README.markdown b/README.markdown index 627e73a..5aea25f 100644 --- a/README.markdown +++ b/README.markdown @@ -944,6 +944,20 @@ For example: *Type*: rvalue. +#### `pry` + +This function invokes a pry debugging session in the current scope object. This is useful for debugging manifest code at specific points during a compilation. Should only be used when running `puppet apply` or running a puppet master in the foreground. This requires the `pry` gem to be installed in puppet's rubygems. + +*Examples:* +```puppet +pry() +``` +Once in a pry session, some interesting commands: + +* Run `catalog` to see the contents currently compiling catalog +* Run `cd catalog` and `ls` to see catalog methods and instance variables +* Run `@resource_table` to see the current catalog resource table + #### `assert_private` Sets the current class or definition as private. Calling the class or definition from outside the current module will fail. diff --git a/lib/puppet/parser/functions/pry.rb b/lib/puppet/parser/functions/pry.rb new file mode 100644 index 0000000..c18ef7e --- /dev/null +++ b/lib/puppet/parser/functions/pry.rb @@ -0,0 +1,30 @@ +# +# pry.rb +# + +module Puppet::Parser::Functions + newfunction(:pry, :type => :statement, :doc => <<-EOS +This function invokes a pry debugging session in the current scope object. This is useful for debugging manifest code at specific points during a compilation. + +*Examples:* + + pry() + EOS + ) do |arguments| + begin + require 'pry' + rescue LoadError + raise(Puppet::Error, "pry(): Requires the 'pry' rubygem to use, but it was not found") + end + # + ## Run `catalog` to see the contents currently compiling catalog + ## Run `cd catalog` and `ls` to see catalog methods and instance variables + ## Run `@resource_table` to see the current catalog resource table + # + if $stdout.isatty + binding.pry # rubocop:disable Lint/Debugger + else + Puppet.warning 'pry(): cowardly refusing to start the debugger on a daemonized master' + end + end +end |