Merge pull request #667 from yast/erb_template

Erb template

package/autoyast2.changes

@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Tue Aug 25 14:17:31 UTC 2020 - Josef Reidinger <jreidinger@suse.com>
+
+- Add ability to use erb template as dynamic autoyast profile
+  (bsc#1175735)
+- 4.3.38
+
 -------------------------------------------------------------------
 Tue Aug 25 07:33:20 UTC 2020 - Ladislav Slezák <lslezak@suse.cz>
 

package/autoyast2.spec

@@ -22,7 +22,7 @@
 %endif
 
 Name:           autoyast2
-Version:        4.3.37
+Version:        4.3.38
 Release:        0
 Summary:        YaST2 - Automated Installation
 License:        GPL-2.0-only

src/lib/autoinstall/y2erb.rb

@@ -0,0 +1,23 @@
+require "yast"
+require "erb"
+
+module Y2Autoinstallation
+  class Y2ERB
+    def self.render(path)
+      env = TemplateEnvironment.new
+      template = ERB.new(File.read(path))
+      template.result(env.public_binding)
+    end
+
+    class TemplateEnvironment
+      def hardware
+        @hardware ||= Yast::SCR.Read(Yast::Path.new(".probe"))
+      end
+
+      # expose method bindings
+      def public_binding
+        binding
+      end
+    end
+  end
+end

src/modules/ProfileLocation.rb

@@ -7,6 +7,7 @@
 require "yast"
 
 require "autoinstall/xml_checks"
+require "autoinstall/y2erb"
 require "y2storage"
 
 module Yast
@@ -168,6 +169,12 @@ def Process
           tmp = Convert.to_string(SCR.Read(path(".target.string"), localfile))
           l = Builtins.splitstring(tmp, "\n")
         end
+
+        # render erb template
+        if AutoinstConfig.filepath.end_with?(".erb")
+          res = Y2Autoinstallation::Y2ERB.render(localfile)
+          SCR.Write(path(".target.string"), localfile, res)
+        end
       else
         is_directory = true
       end
@@ -191,6 +198,9 @@ def Process
 
       return false if !is_directory && !profile_checker.valid_profile?
 
+      # no rules and classes support for erb templates
+      return true if AutoinstConfig.filepath.end_with?(".erb")
+
       ret = if is_directory
         Get(
           AutoinstConfig.scheme,

test/lib/y2erb_test.rb

@@ -0,0 +1,40 @@
+# Copyright (c) [2020] SUSE LLC
+#
+# All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of version 2 of the GNU General Public License as published
+# by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, contact SUSE LLC.
+#
+# To contact SUSE LLC about this file by physical or electronic mail, you may
+# find current contact information at www.suse.com.
+
+require_relative "../test_helper"
+
+require "tempfile"
+require "autoinstall/y2erb"
+
+describe Y2Autoinstallation::Y2ERB do
+  describe ".render" do
+    it "returns string with rendered template" do
+      # mock just for optimization
+      allow(Yast::SCR).to receive(:Read).and_return({})
+      file = Tempfile.new("test")
+      path = file.path
+      file.write("<test><%= hardware.inspect %></test>")
+      file.close
+      result = described_class.render(path)
+      file.unlink
+
+      expect(result).to match(/<test>{.*}<\/test>/)
+    end
+  end
+end