From d3eeca8580b05450c493670ca7ae1a2c4ca6d0a7 Mon Sep 17 00:00:00 2001
From: Samuel Mutel <samuel.mutel@gmail.com>
Date: Thu, 29 Apr 2021 21:52:30 +0200
Subject: [PATCH] Add unattended_only_on_ac_power and install powermgmt-base
 (#76)

Co-authored-by: Samuel Mutel <smu-dw@deveryware.net>
---
 README.md                        | 2 ++
 defaults/main.yml                | 5 +++++
 tasks/unattended-upgrades.yml    | 8 ++++++++
 templates/unattended-upgrades.j2 | 4 ++++
 4 files changed, 19 insertions(+)

diff --git a/README.md b/README.md
index 0be991b..ffb0529 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,8 @@ On some hosts you may find that the unattended-upgrade's cronfile `/etc/cron.dai
     * Default: `[]`
 * `unattended_dl_limit`: Limit the download speed in kb/sec using apt bandwidth limit feature.
     * Default: disabled
+* `unattended_only_on_ac_power`: Download and install upgrades only on AC power. It will also install the debian package `powermgmt-base`.
+    * Default: false
 
 ## Origins Patterns
 
diff --git a/defaults/main.yml b/defaults/main.yml
index a62ee01..ca97dc4 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -135,3 +135,8 @@ unattended_dpkg_options: []
 
 # Use apt bandwidth limit feature, this example limits the download speed to 70kb/sec
 #unattended_dl_limit: 70
+
+# Unattended-Upgrade::OnlyOnACPower
+# Download and install upgrades only on AC power
+# (i.e. skip or gracefully stop updates on battery)
+unattended_only_on_ac_power: false
diff --git a/tasks/unattended-upgrades.yml b/tasks/unattended-upgrades.yml
index 2b911fe..1cbf60e 100644
--- a/tasks/unattended-upgrades.yml
+++ b/tasks/unattended-upgrades.yml
@@ -6,6 +6,14 @@
   include_vars: "{{ ansible_distribution }}-{{ ansible_distribution_release }}.yml"
   when: (ansible_distribution == "Debian") and (ansible_distribution_release == "wheezy")
 
+- name: install powermgmt-base
+  apt:
+    pkg:
+    state: present
+    cache_valid_time: "{{ unattended_cache_valid_time }}"
+    update_cache: yes
+  when: unattended_only_on_ac_power
+
 - name: install unattended-upgrades
   apt:
     pkg: unattended-upgrades
diff --git a/templates/unattended-upgrades.j2 b/templates/unattended-upgrades.j2
index 9338c49..86b6374 100644
--- a/templates/unattended-upgrades.j2
+++ b/templates/unattended-upgrades.j2
@@ -121,3 +121,7 @@ Dpkg::Options {
 // speed to 70kb/sec
 Acquire::http::Dl-Limit "{{ unattended_dl_limit }}";
 {% endif %}
+
+// Download and install upgrades only on AC power
+// (i.e. skip or gracefully stop updates on battery)
+Unattended-Upgrade::OnlyOnACPower "{{ unattended_only_on_ac_power }}";