(PUP-11655) Use run_mode for better platform independence

The run mode already determines the platform. Moving all platform
specific paths into RunMode makes it easier to get a complete overview
and change things where needed.

Co-authored-by: Josh Cooper <joshcooper@users.noreply.github.com>

Author: ekohl

lib/puppet/defaults.rb

@@ -47,29 +47,15 @@ def self.default_cadir
   end
 
   def self.default_basemodulepath
-    if Puppet::Util::Platform.windows?
-      path = ['$codedir/modules']
-      installdir = ENV.fetch("FACTER_env_windows_installdir", nil)
-      if installdir
-        path << "#{installdir}/puppet/modules"
-      end
-      path.join(File::PATH_SEPARATOR)
-    else
-      '$codedir/modules:/opt/puppetlabs/puppet/modules'
+    path = ['$codedir/modules']
+    if (run_mode_dir = Puppet.run_mode.common_module_dir)
+      path << run_mode_dir
     end
+    path.join(File::PATH_SEPARATOR)
   end
 
   def self.default_vendormoduledir
-    if Puppet::Util::Platform.windows?
-      installdir = ENV.fetch("FACTER_env_windows_installdir", nil)
-      if installdir
-        "#{installdir}\\puppet\\vendor_modules"
-      else
-        nil
-      end
-    else
-      '/opt/puppetlabs/puppet/vendor_modules'
-    end
+    Puppet.run_mode.vendor_module_dir
   end
 
   ############################################################################################

lib/puppet/provider/package/puppet_gem.rb

@@ -8,20 +8,7 @@
 
   confine :true => Puppet.runtime[:facter].value(:aio_agent_version)
 
-  def self.windows_gemcmd
-    puppet_dir = ENV.fetch('PUPPET_DIR', nil)
-    if puppet_dir
-      File.join(puppet_dir.to_s, 'bin', 'gem.bat')
-    else
-      File.join(Gem.default_bindir, 'gem.bat')
-    end
-  end
-
-  if Puppet::Util::Platform.windows?
-    commands :gemcmd => windows_gemcmd
-  else
-    commands :gemcmd => "/opt/puppetlabs/puppet/bin/gem"
-  end
+  commands :gemcmd => Puppet.run_mode.gem_cmd
 
   def uninstall
     super
@@ -30,7 +17,9 @@ def uninstall
   end
 
   def self.execute_gem_command(command, command_options, custom_environment = {})
-    custom_environment['PKG_CONFIG_PATH'] = '/opt/puppetlabs/puppet/lib/pkgconfig' unless Puppet::Util::Platform.windows?
+    if (pkg_config_path = Puppet.run_mode.pkg_config_path)
+      custom_environment['PKG_CONFIG_PATH'] = pkg_config_path
+    end
     super(command, command_options, custom_environment)
   end
 end

lib/puppet/util/run_mode.rb

@@ -87,6 +87,22 @@ def run_dir
       def log_dir
         which_dir("/var/log/puppetlabs/puppet", "~/.puppetlabs/var/log")
       end
+
+      def pkg_config_path
+        '/opt/puppetlabs/puppet/lib/pkgconfig'
+      end
+
+      def gem_cmd
+        '/opt/puppetlabs/puppet/bin/gem'
+      end
+
+      def common_module_dir
+        '/opt/puppetlabs/puppet/modules'
+      end
+
+      def vendor_module_dir
+        '/opt/puppetlabs/puppet/vendor_modules'
+      end
     end
 
     class WindowsRunMode < RunMode
@@ -114,8 +130,32 @@ def log_dir
         which_dir(File.join(windows_common_base("puppet/var/log")), "~/.puppetlabs/var/log")
       end
 
+      def pkg_config_path
+        nil
+      end
+
+      def gem_cmd
+        if (puppet_dir = ENV.fetch('PUPPET_DIR', nil))
+          File.join(puppet_dir.to_s, 'bin', 'gem.bat')
+        else
+          File.join(Gem.default_bindir, 'gem.bat')
+        end
+      end
+
+      def common_module_dir
+        "#{installdir}/puppet/modules" if installdir
+      end
+
+      def vendor_module_dir
+        "#{installdir}\\puppet\\vendor_modules" if installdir
+      end
+
       private
 
+      def installdir
+        ENV.fetch('FACTER_env_windows_installdir', nil)
+      end
+
       def windows_common_base(*extra)
         [ENV.fetch('ALLUSERSPROFILE', nil), "PuppetLabs"] + extra
       end

spec/unit/provider/package/puppet_gem_spec.rb

@@ -42,32 +42,6 @@
     allow(File).to receive(:file?).with(provider_gem_cmd).and_return(true)
   end
 
-  describe '.windows_gemcmd' do
-    context 'when PUPPET_DIR is not set' do
-      before do
-        # allow(ENV).to receive(:fetch, anything).and_call_original
-        allow(ENV).to receive(:fetch).with('PUPPET_DIR', anything).and_return(nil)
-        allow(Gem).to receive(:default_bindir).and_return('default_gem_bin')
-      end
-
-      it 'uses Gem.default_bindir' do
-        expected_path = File.join('default_gem_bin', 'gem.bat')
-        expect(described_class.windows_gemcmd).to eql(expected_path)
-      end
-    end
-
-    context 'when PUPPET_DIR is set' do
-      before do
-        allow(ENV).to receive(:fetch).with('PUPPET_DIR', anything).and_return('puppet_dir')
-      end
-
-      it 'uses Gem.default_bindir' do
-        expected_path = File.join('puppet_dir', 'bin', 'gem.bat')
-        expect(described_class.windows_gemcmd).to eql(expected_path)
-      end
-    end
-  end
-
   context "when installing" do
     before :each do
       allow(provider).to receive(:rubygem_version).and_return('1.9.9')
@@ -133,5 +107,4 @@
       it { is_expected.to be > 100 }
     end
   end
-
 end

spec/unit/util/run_mode_spec.rb

@@ -97,6 +97,22 @@
         end
       end
     end
+
+    describe "#pkg_config_path" do
+      it { expect(@run_mode.pkg_config_path).to eq('/opt/puppetlabs/puppet/lib/pkgconfig') }
+    end
+
+    describe "#gem_cmd" do
+      it { expect(@run_mode.gem_cmd).to eq('/opt/puppetlabs/puppet/bin/gem') }
+    end
+
+    describe "#common_module_dir" do
+      it { expect(@run_mode.common_module_dir).to eq('/opt/puppetlabs/puppet/modules') }
+    end
+
+    describe "#vendor_module_dir" do
+      it { expect(@run_mode.vendor_module_dir).to eq('/opt/puppetlabs/puppet/vendor_modules') }
+    end
   end
 
   describe Puppet::Util::WindowsRunMode, :if => Puppet::Util::Platform.windows? do
@@ -171,6 +187,81 @@
         end
       end
     end
+
+    describe '#gem_cmd' do
+      before do
+        allow(ENV).to receive(:fetch).and_call_original
+        allow(Puppet::Util).to receive(:fetch).with('PUPPET_DIR').and_return(puppetdir)
+      end
+
+      context 'when PUPPET_DIR is not set' do
+        let(:puppetdir) { nil }
+
+        before do
+          allow(Gem).to receive(:default_bindir).and_return('default_gem_bin')
+        end
+
+        it 'uses Gem.default_bindir' do
+          expected_path = File.join('default_gem_bin', 'gem.bat')
+          expect(@run_mode.gem_cmd).to eql(expected_path)
+        end
+      end
+
+      context 'when PUPPET_DIR is set' do
+        let(:puppetdir) { 'puppet_dir' }
+
+        it 'uses Gem.default_bindir' do
+          expected_path = File.join('puppet_dir', 'bin', 'gem.bat')
+          expect(@run_mode.gem_cmd).to eql(expected_path)
+        end
+      end
+    end
+
+    describe '#common_module_dir' do
+      before do
+        allow(ENV).to receive(:fetch).and_call_original
+        allow(ENV).to receive(:fetch).with('FACTER_env_windows_installdir', nil).and_return(installdir)
+      end
+
+      context 'when installdir is not set' do
+        let(:installdir) { nil }
+
+        it 'returns nil' do
+          expect(@run_mode.common_module_dir).to be(nil)
+        end
+      end
+
+      context 'with installdir' do
+        let(:installdir) { 'C:\Program Files\Puppet Labs\Puppet' }
+
+        it 'returns INSTALLDIR/puppet/modules' do
+          expect(@run_mode.common_module_dir).to eq('C:\Program Files\Puppet Labs\Puppet/puppet/modules')
+        end
+      end
+    end
+
+    describe '#vendor_module_dir' do
+      before do
+        allow(ENV).to receive(:fetch).and_call_original
+        allow(ENV).to receive(:fetch).with('FACTER_env_windows_installdir', nil).and_return(installdir)
+      end
+
+      context 'when installdir is not set' do
+        let(:installdir) { nil }
+
+        it 'returns nil' do
+          expect(@run_mode.vendor_module_dir).to be(nil)
+        end
+      end
+
+      context 'with installdir' do
+        let(:installdir) { 'C:\Program Files\Puppet Labs\Puppet' }
+
+        it 'returns INSTALLDIR\puppet\vendor_modules' do
+          expect(@run_mode.vendor_module_dir).to eq('C:\Program Files\Puppet Labs\Puppet\puppet\vendor_modules')
+        end
+      end
+    end
   end
 
   def as_root