Accelerating Charm Start

[osm/devops.git] / jenkins / VCA / update-lxd-image.sh

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+#!/bin/bash
+#
+# This script will create xenial and trusty lxd images that will be used by the
+# lxd provider in juju 2.1+ It is for use with the lxd provider for local
+# development and preinstalls a common set of production packages.
+#
+# This dramatically speeds up the install hooks for lxd deploys by
+# pre-installing common packages. It is intended to run daily as part of
+# a cron job.
+set -eux
+
+# The basic charm layer also installs all the things. 47 packages.
+LAYER_BASIC="gcc build-essential python3-pip python3-setuptools python3-yaml"
+
+# the basic layer also installs virtualenv, but the name changed in xenial.
+TRUSTY_PACKAGES="python-virtualenv"
+XENIAL_PACKAGES="virtualenv"
+
+# Predownload common packages used by your charms in development
+DOWNLOAD_PACKAGES=""
+
+PACKAGES="$LAYER_BASIC $DOWNLOAD_PACKAGES"
+
+function cache() {
+    series=$1
+    container=juju-${series}-base
+    alias=juju/$series/amd64
+
+    lxc delete $container -f || true
+    lxc launch ubuntu:$series $container
+    sleep 5  # wait for network
+
+    lxc exec $container -- apt-get update -y
+    lxc exec $container -- apt-get upgrade -y
+    lxc exec $container -- apt-get install -y $PACKAGES $2
+    lxc stop $container
+
+    lxc image delete $alias || true
+    lxc publish $container --alias $alias description="$series juju dev image ($(date +%Y%m%d))"
+
+    lxc delete $container -f || true
+}
+
+cache trusty "$TRUSTY_PACKAGES"
+cache xenial "$XENIAL_PACKAGES"