(PUP-11788) Account for JRuby behavior in Dir.glob

JRuby does not properly match both directory and file wildcards when
using Dir.glob (e.g. Dir.glob('**/*.pp'), which can lead to incorrect
matches. Because of this, if a manifest name contains ".pp" in its
filename (e.g. foo.pp.pp), Puppet does not recognize it as a manifest
file when importing and parsing manifests.

This commit updates the perform_initial_import method to no longer rely
on that wildcard Dir.glob behavior to recursively traverse a directory
and instead uses only the directory wildcard and uses Array.select
to identify files ending in ".pp" from there.

(cherry picked from commit 663062a)

lib/puppet/node/environment.rb

@@ -591,10 +591,12 @@ def perform_initial_import
       if file == NO_MANIFEST
         empty_parse_result
       elsif File.directory?(file)
-        parse_results = Puppet::FileSystem::PathPattern.absolute(File.join(file, '**/*.pp')).glob.sort.map do | file_to_parse |
-          parser.file = file_to_parse
-          parser.parse
-          end
+        # JRuby does not properly perform Dir.glob operations with wildcards, (see PUP-11788 and https://github.com/jruby/jruby/issues/7836).
+        # We sort the results because Dir.glob order is inconsistent in Ruby < 3 (see PUP-10115).
+        parse_results = Puppet::FileSystem::PathPattern.absolute(File.join(file, '**/*')).glob.select {|globbed_file| globbed_file.end_with?('.pp')}.sort.map do | file_to_parse |
+                          parser.file = file_to_parse
+                          parser.parse
+                        end
         # Use a parser type specific merger to concatenate the results
         Puppet::Parser::AST::Hostclass.new('', :code => Puppet::Parser::ParserFactory.code_merger.concatenate(parse_results))
       else

spec/unit/file_system/path_pattern_spec.rb

@@ -1,6 +1,7 @@
 require 'spec_helper'
 require 'puppet_spec/files'
 require 'puppet/file_system'
+require 'puppet/util'
 
 describe Puppet::FileSystem::PathPattern do
   include PuppetSpec::Files
@@ -132,6 +133,20 @@
                                          File.join(dir, "found_two")])
   end
 
+  it 'globs wildcard patterns properly' do
+    # See PUP-11788 and https://github.com/jruby/jruby/issues/7836.
+    pending 'JRuby does not properly handle Dir.glob' if Puppet::Util::Platform.jruby?
+
+    dir = tmpdir('globtest')
+    create_file_in(dir, 'foo.pp')
+    create_file_in(dir, 'foo.pp.pp')
+
+    pattern = Puppet::FileSystem::PathPattern.absolute(File.join(dir, '**/*.pp'))
+
+    expect(pattern.glob).to match_array([File.join(dir, 'foo.pp'),
+                                         File.join(dir, 'foo.pp.pp')])
+  end
+
   def create_file_in(dir, name)
     File.open(File.join(dir, name), "w") { |f| f.puts "data" }
   end