Add rvm_shell resource.

libraries/helpers.rb

@@ -54,6 +54,15 @@ def ruby_installed?(rubie)
   ! installed_rubies.select { |r| r.start_with?(rubie) }.empty?
 end
 
+##
+# Inverse of #ruby_installed?
+#
+# @param [String, #to_s] the fully qualified RVM ruby string
+# @return [Boolean] is this ruby not installed?
+def ruby_not_installed?(rubie)
+  !ruby_installed?(rubie)
+end
+
 ##
 # Determines whether or not the given ruby is a known ruby string
 #

providers/shell.rb

@@ -0,0 +1,70 @@
+#
+# Cookbook Name:: rvm
+# Provider:: shell
+#
+# Author:: Fletcher Nichol <fnichol@nichol.ca>
+#
+# Copyright 2011, Fletcher Nichol
+#
+# 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.
+#
+
+action :run do
+  ruby_string = normalize_ruby_string(new_resource.ruby_string)
+  rubie   = select_ruby(ruby_string)
+  gemset  = select_gemset(ruby_string)
+
+  if ruby_not_installed?(rubie)
+    Chef::Log.warn("rvm_ruby[#{rubie}] not installed, so skipping")
+  elsif gemset && !gemset_exists?(:ruby => rubie, :gemset => gemset)
+    Chef::Log.warn("rvm_gemset[#{ruby_string}] not created, so skipping")
+  else
+    script_wrapper :run
+  end
+end
+
+
+##
+# Wraps the script resource for RVM-dependent code.
+#
+# @param [Symbol] action to be performed with gem_package provider
+# @param [optional, String, #to_s] the fully qualifed rvm string
+def script_wrapper(exec_action, ruby_string=new_resource.ruby_string)
+  script_code = <<-CODE
+    if [ -s "${HOME}/.rvm/scripts/rvm" ]; then
+      source "${HOME}/.rvm/scripts/rvm"
+    elif [ -s "#{::File.dirname(node[:rvm][:root_path])}/lib/rvm" ]; then
+      source "#{::File.dirname(node[:rvm][:root_path])}/lib/rvm"
+    fi
+
+    rvm use #{ruby_string}
+
+    #{new_resource.code}
+  CODE
+
+  s = script new_resource.name do
+    interpreter   "bash"
+    code          script_code
+    creates       new_resource.creates      if new_resource.creates
+    cwd           new_resource.cwd          if new_resource.cwd
+    environment   new_resource.environment  if new_resource.environment
+    group         new_resource.group        if new_resource.group
+    path          new_resource.path         if new_resource.path
+    returns       new_resource.returns      if new_resource.returns
+    timeout       new_resource.timeout      if new_resource.timeout
+    user          new_resource.user         if new_resource.user
+    umask         new_resource.umask        if new_resource.umask
+    action        :nothing
+  end
+  s.run_action(exec_action)
+end

resources/shell.rb

@@ -0,0 +1,41 @@
+#
+# Cookbook Name:: rvm
+# Resource:: shell
+#
+# Author:: Fletcher Nichol <fnichol@nichol.ca>
+#
+# Copyright 2011, Fletcher Nichol
+#
+# 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.
+#
+
+actions :run
+
+attribute :name,        :kind_of => String, :name_attribute => true
+attribute :ruby_string, :kind_of => String, :default => "default"
+attribute :code,        :kind_of => String
+attribute :creates,     :kind_of => String
+attribute :cwd,         :kind_of => String
+attribute :environment, :kind_of => Hash
+attribute :group,       :kind_of => String
+attribute :path,        :kind_of => Array
+attribute :returns,     :kind_of => Array, :default => [ 0 ]
+attribute :timeout,     :kind_of => Integer
+attribute :user,        :kind_of => String
+attribute :umask,       :kind_of => String
+
+def initialize(name, run_context=nil)
+  super
+  @action = :run
+  @command = name
+end