Do not crash if appdata is not available

app/models/appdata.rb

@@ -40,7 +40,13 @@ def self.get_distribution(dist = 'factory', flavour = 'oss')
                   else
                     "http://download.opensuse.org/distribution/#{dist}/repo/#{flavour}/suse/setup/descr/appdata.xml.gz"
                   end
-    Nokogiri::XML(Zlib::GzipReader.new(open(appdata_url)))
+    begin
+      Nokogiri::XML(Zlib::GzipReader.new(open(appdata_url)))
+    rescue StandardError => e
+      Rails.logger.error e
+      Rails.logger.error "Can't retrieve appdata from: '#{appdata_url}'"
+      Nokogiri::XML('<?xml version="1.0" encoding="UTF-8"?><components origin="appdata" version="0.8"></components>')
+    end
   end
 
 end

test/models/appdata_test.rb

@@ -8,4 +8,12 @@ class AppdataTest < ActiveSupport::TestCase
     assert_equal 4, pkg_list.size
     assert_equal ['0ad', '4pane', 'opera', 'steam'], pkg_list
   end
+
+  test 'Missing appdata should not raise anything' do
+    stub_content("download.opensuse.org/tumbleweed/repo/oss/suse/setup/descr/appdata.xml.gz", status: [404, "Not found"])
+    appdata = Appdata.get('factory')
+    # Should at least include the standard searches
+    assert_not_empty appdata[:apps]
+    assert_includes appdata[:apps].map { |e| e[:name] }, 'Opera'
+  end
 end