Use ppa:mongodb-arm64/ppa by default when running on arm64/trusty

We know that the version of mongodb that shipped in trusty is insufficient for arm64, so there's no point in having the charm try to use it. Instead, default to pulling from a Canonical-maintained PPA - but still respect a user's "source" config setting if specified. 

1 files changed, 17 insertions, 0 deletions

diff --git a/hooks/hooks.py b/hooks/hooks.py
index d6a590a..a7aa4cd 100755
--- a/hooks/hooks.py
+++ b/hooks/hooks.py
@@ -45,6 +45,7 @@ from charmhelpers.core.hookenv import log as juju_log
 
 from charmhelpers.core.host import (
 service,
+ lsb_release,
 )
 
 hooks = Hooks()
@@ -718,6 +719,17 @@ PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
 
 """ % (cron_runtime, script_filename))
 
+# We can remove this quirk when charm no longer supports trusty
+def arm64_trusty_quirk():
+ arch = subprocess.check_output(['dpkg', '--print-architecture']).strip()
+ if arch != 'arm64':
+ return
+ if lsb_release()['DISTRIB_CODENAME'] != 'trusty':
+ return
+ ppa = 'ppa:mongodb-arm64/ppa'
+ juju_log("*** Detected trusty/arm64. Archive version contains incomplete "
+ "mongodb port, enabling installs from %s ***" % (ppa))
+ add_source(ppa)
 
 ###############################################################################
 # Hook functions
@@ -726,6 +738,11 @@ PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
 def install_hook():
 juju_log("Installing mongodb")
 add_source(config('source'), config('key'))
+
+ # Allow users to bypass arm64/trusty workaround by adding their own source
+ if config('source') == 'None':
+	arm64_trusty_quirk()
+
 apt_update(fatal=True)
 apt_install(packages=['mongodb-server', 'mongodb-clients', 'python-yaml'],
 fatal=True)