From a7fb205256c0773e5911f77513b02bf190453c0f Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Wed, 20 Jan 2021 11:38:46 +0100
Subject: [PATCH] Add a base role

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>
---
 .../roles/base/files/conditional-reload.sh    | 26 +++++++++++++++++++
 .../roles/base/files/conditional-restart.sh   | 10 +++++++
 ansible/roles/base/tasks/main.yml             | 17 ++++++++++++
 3 files changed, 53 insertions(+)
 create mode 100644 ansible/roles/base/files/conditional-reload.sh
 create mode 100644 ansible/roles/base/files/conditional-restart.sh
 create mode 100644 ansible/roles/base/tasks/main.yml

diff --git a/ansible/roles/base/files/conditional-reload.sh b/ansible/roles/base/files/conditional-reload.sh
new file mode 100644
index 0000000..988a08b
--- /dev/null
+++ b/ansible/roles/base/files/conditional-reload.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+# reload SERVICE only if PACKAGE is installed.
+# We use this throughout handlers/restart_services.yml
+
+SERVICE=$1
+PACKAGE=$2
+
+rpm -q $PACKAGE
+
+INSTALLED=$?
+
+if [ $INSTALLED -eq 0 ]; then
+    echo "Checking if $SERVICE is running"
+    /sbin/service $SERVICE status >& /dev/null
+    if [ $? == 0 ]; then
+      echo "Package $PACKAGE installed and running.  Attempting reload of $SERVICE."
+      /sbin/service $SERVICE reload
+      exit $?  # Exit with the /sbin/service status code
+    fi
+    echo "Package $PACKAGE is install, but $SERVICE is not running, skipping..."
+    exit 0
+fi
+
+# If the package wasn't installed, then pretend everything is fine.
+echo "Package $PACKAGE not installed.  Skipping reload of $SERVICE."
+exit 0
diff --git a/ansible/roles/base/files/conditional-restart.sh b/ansible/roles/base/files/conditional-restart.sh
new file mode 100644
index 0000000..8da52dc
--- /dev/null
+++ b/ansible/roles/base/files/conditional-restart.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+#
+# We use this to try and restart a service. 
+# If it's not running, do nothing. 
+# If it is running, restart it.
+#
+
+SERVICE=$1
+# Check if service unit is present before trying to restart it
+/usr/bin/systemctl cat $1.service &>/dev/null && /usr/bin/systemctl try-restart $1 || true
diff --git a/ansible/roles/base/tasks/main.yml b/ansible/roles/base/tasks/main.yml
new file mode 100644
index 0000000..bfed18e
--- /dev/null
+++ b/ansible/roles/base/tasks/main.yml
@@ -0,0 +1,17 @@
+- name: Install packages that are useful in general
+  package: name={{ item }} state=present
+  with_items:
+    - vim
+    - tmux
+  tags:
+    - base
+    - package
+
+- name: Install the conditional-restart/reload scripts
+  copy: src={{ item }} dest=/usr/local/bin
+        owner=root group=root mode=0755
+  with_fileglob:
+    - conditional*
+  tags:
+    - config
+    - base