From 8787cfc30714766e091652ee00c14580a316d4ce Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Fri, 27 Oct 2017 16:04:54 +0300
Subject: Refactor: rewrite to allow any number of VMs to remove

---
 remove-vm | 60 +++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 39 insertions(+), 21 deletions(-)

(limited to 'remove-vm')

diff --git a/remove-vm b/remove-vm
index 363f2a0..2ac9e53 100755
--- a/remove-vm
+++ b/remove-vm
@@ -4,28 +4,46 @@
 
 set -eu
 
-# Command line parameters.
-name="$1"
+run_virsh()
+{
+    virsh -c qemu:///system "$@"
+}
+
+vm_exists()
+{
+    run_virsh list --all | grep -F "$name" > /dev/null
+}
+
+remove_vm()
+{
+    local name="$1"
+
+    # Shut down and remove the VM, if it exists.
+    if vm_exists "$name"
+    then
+        run_virsh destroy "$name" || true
+        run_virsh undefine "$name"
+    fi
+
+    # Remove the LV, if it exists.
+    lvpath="/dev/$vg/$name"
+    if [ -e "$lvpath" ]
+    then
+        sudo lvremove --force "$lvpath"
+    fi
+
+    # Remove the host from /etc/hosts, if there.
+    awk -v "name=$name" '$2 != name' /etc/hosts | sudo sponge /etc/hosts
+
+    # Done.
+    echo "Virtual machine $name is gone."
+}
+
 
 # Read config variables.
 . "$HOME/.config/ansibleness/vm.conf"
 
-# Shut down and remove the VM, if it exists.
-if virsh -c qemu:///system list --all | grep -F "$name" > /dev/null
-then
-    virsh -c qemu:///system destroy "$name" || true
-    virsh -c qemu:///system undefine "$name"
-fi
-
-# Remove the LV, if it exists.
-lvpath="/dev/$vg/$name"
-if [ -e "$lvpath" ]
-then
-    sudo lvremove --force "$lvpath"
-fi
-
-# Remove the host from /etc/hosts, if there.
-awk -v "name=$name" '$2 != name' /etc/hosts | sudo sponge /etc/hosts
-
-# Done.
-echo "Virtual machine $name is gone."
+for name in "$@"
+do
+    remove_vm "$name"
+done
-- 
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