Add a new init_package ohai piece, so Chef service providers can determine what to use

2 files changed, 68 insertions, 0 deletions

diff --git a/lib/ohai/plugins/linux/init_package.rb b/lib/ohai/plugins/linux/init_package.rb
new file mode 100644
index 00000000..76b3dc5a
--- /dev/null
+++ b/lib/ohai/plugins/linux/init_package.rb
@@ -0,0 +1,27 @@
+#
+# Author:: Caleb Tennis (<caleb.tennis@gmail.com>)
+# Copyright:: Copyright (c) 2012 Opscode, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+provides "init_package"
+
+package_name = nil
+
+if File.exists?("/proc/1/comm")
+  package_name = File.open("/proc/1/comm").gets.chomp
+end
+
+init_package package_name
diff --git a/spec/ohai/plugins/linux/init_package_spec.rb b/spec/ohai/plugins/linux/init_package_spec.rb
new file mode 100644
index 00000000..abbdbc0e
--- /dev/null
+++ b/spec/ohai/plugins/linux/init_package_spec.rb
@@ -0,0 +1,41 @@
+#
+# Author:: Caleb Tennis (<caleb.tennis@gmail.com>)
+# Copyright:: Copyright (c) 2012 Opscode, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require File.expand_path(File.dirname(__FILE__) + '/../../../spec_helper.rb')
+
+describe Ohai::System, "Init package" do
+  before(:each) do
+    @ohai = Ohai::System.new    
+    @ohai.stub!(:require_plugin).and_return(true)
+    @ohai[:os] = "linux"
+    @mock_file = mock("/proc/1/comm")
+    @mock_file.stub!(:gets).and_return("init\n")
+    File.stub!(:open).with("/proc/1/comm").and_return(@mock_file)
+  end
+  
+  it "should set init_package to init" do
+    @ohai._require_plugin("linux::init_package")
+    @ohai[:init_package].should == "init"
+  end
+  
+  it "should set init_package to systemd" do
+    @mock_file.stub!(:gets).and_return("systemd\n")
+    @ohai._require_plugin("linux::init_package")
+    @ohai[:init_package].should == "systemd"
+  end
+end
\ No newline at end of file