Add autograde feature for rvm and keep the installer script locally

README.md

@@ -10,13 +10,24 @@ ansible-ruby solves this by using rvm to install 1 or more versions of ruby. It
 
 ## Role variables
 
-The only variable you need to concern yourself about is `ruby_version` if you're happy with the default download and install path.
+Below is a list of default values along with a description of what they do.
 
 ```
+# Set the version of ruby you want to install.
 ruby_version: 2.1.1 # X.X.X-pXXX format
 
+# Where should the rvm-installer and other temp files be downloaded to?
 ruby_temp_download_path: /usr/local/src
+
+# Where should rvm be installed to?
 ruby_rvm_install_path: /usr/local/rvm
+
+# Force upgrade rvm-installer to the latest stable version.
+ruby_rvm_force_upgrade_installer: false
+
+# If you are concerned rvm stable might not be stable then
+# you can set this to true so that rvm itself never upgrades.
+ruby_rvm_skip_upgrade: false
 ```
 
 ## Example playbook

defaults/main.yml

@@ -3,3 +3,6 @@ ruby_version: 2.1.1 # X.X.X-pXXX format
 
 ruby_temp_download_path: /usr/local/src
 ruby_rvm_install_path: /usr/local/rvm
+
+ruby_rvm_force_upgrade_installer: false
+ruby_rvm_skip_upgrade: false

tasks/main.yml

@@ -1,33 +1,44 @@
 ---
-- name: detect rvm installation
+- name: detect rvm profile
   stat: path=/etc/profile.d/rvm.sh
-  register: rvm_installation
+  register: rvm_profile
+
+- name: detect rvm installer
+  stat: path={{ ruby_temp_download_path }}/rvm-installer.sh
+  register: rvm_installer
+
+- name: detect current rvm version
+  shell: "{{ ruby_rvm_install_path }}/bin/rvm version"
+  register: rvm_current_version
+  when: rvm_profile.stat.exists
+
+- name: detect latest rvm version
+  uri: url=https://raw.githubusercontent.com/wayneeseguin/rvm/master/VERSION return_content=yes
+  register: rvm_latest_version
 
 - name: ensure rvm installer is downloaded
   get_url:
     url: https://get.rvm.io
     dest: "{{ ruby_temp_download_path }}/rvm-installer.sh"
-  when: not rvm_installation.stat.exists
+  when: not rvm_installer.stat.exists or ruby_rvm_force_upgrade_installer
 
 - name: ensure rvm installer is configured
   file:
     path: "{{ ruby_temp_download_path }}/rvm-installer.sh"
     mode: 0755
-  when: not rvm_installation.stat.exists
+  when: not rvm_profile.stat.exists or ruby_rvm_force_upgrade_installer
 
 - name: ensure rvm stable is installed
   command: "{{ ruby_temp_download_path }}/rvm-installer.sh --path {{ ruby_rvm_install_path }} stable"
-  when: not rvm_installation.stat.exists
+  when: not rvm_profile.stat.exists
 
-- name: ensure rvm installer is deleted
+- name: ensure rvm is upgraded
-  file:
+  shell: "{{ ruby_rvm_install_path }}/bin/rvm get stable && {{ ruby_rvm_install_path }}/bin/rvm reload"
-    path: "{{ ruby_temp_download_path }}/rvm-installer.sh"
+  when: not rvm_latest_version.content[:-1] in rvm_current_version.stdout and rvm_profile.stat.exists and not ruby_rvm_skip_upgrade
-    state: absent
-  when: not rvm_installation.stat.exists
 
 - name: ensure rvm installs ruby dependencies
   command: "{{ ruby_rvm_install_path }}/bin/rvm autolibs 3"
-  when: not rvm_installation.stat.exists
+  when: not rvm_profile.stat.exists
 
 - name: detect if ruby version is installed
   stat: path={{ ruby_rvm_install_path }}/rubies/ruby-{{ ruby_version }}