Add openstack charm func test runner

Also includes tool to identify func test targets from the charm.

openstack/tools/charmed_openstack_functest_runner.sh

@@ -0,0 +1,79 @@
+#!/bin/bash -eux
+SKIP_BUILD=false
+
+while (($# > 0))
+do
+    case "$1" in
+        --skip-build)
+        SKIP_BUILD=true
+        ;;
+        *)
+        echo "ERROR: invalid input '$1'"        
+        exit 1
+        ;;
+    esac
+    shift
+done
+
+
+source ~/novarc
+CIDR=`openstack subnet show subnet_${OS_USERNAME}-psd-extra -c cidr -f value`
+FIP_MAX=$(ipcalc $CIDR| awk '$1=="HostMax:" {print $2}')
+FIP_MIN=$(ipcalc $CIDR| awk '$1=="HostMin:" {print $2}')
+FIP_MIN_ABC=${FIP_MIN%.*}
+FIP_MIN_D=${FIP_MIN##*.}
+FIP_MIN=${FIP_MIN_ABC}.$(($FIP_MIN_D + 64))
+
+# More information on confog https://github.com/openstack-charmers/zaza/blob/master/doc/source/runningcharmtests.rst
+export TEST_HTTP_PROXY=http://squid.internal:3128
+export TEST_FIP_RANGE=FIP_MIN:FIP_MAX
+export TEST_CIDR_EXT=CIDR
+export TEST_GATEWAY=$(openstack subnet show subnet_${OS_USERNAME}-psd-extra -c gateway_ip -f value)
+export TEST_NAME_SERVER=91.189.91.131
+export TEST_CIDR_PRIV=192.168.21.0/24
+export TEST_SWIFT_IP=10.140.56.22
+export TEST_MODEL_SETTINGS="image-stream=released;default-series=jammy;test-mode=true;transmit-vendor-metrics=false"
+export TEST_CONSTRAINTS_FILE=https://raw.githubusercontent.com/openstack-charmers/zaza/master/constraints-juju34.txt
+# We need to set TEST_JUJU3 as well as the constraints file
+# Ref: https://github.com/openstack-charmers/zaza/blob/e96ab098f00951079fccb34bc38d4ae6ebb38606/setup.py#L47
+export TEST_JUJU3=1
+export NET_ID=$(openstack network show net_${OS_USERNAME}-psd -f value -c id)
+
+## Build Charm
+# Note: If you have a reactive charm, some paths may be prefixed by src/, like
+#       src/.tox or src/tests
+#
+# 1. Check charmcraft channel required in zosci.yaml and refresh it to the
+#    matching version. The version will differ based on stable branch version,
+#    e.g. yoga is often 1.5, zed is often 2.0, master 2.x.. some noble-caracal
+#    ones may be on 3.x
+
+sudo snap refresh charmcraft --channel 2.x/stable
+
+# Ensure lxc initialised
+lxd init --auto || true
+
+# 2. Build. This should always do the right thing, regardless of how the
+#           charm is built.
+if ! $SKIP_BUILD; then
+    tox -re build
+fi
+
+# 3. Run tests
+
+for target in $(python3 $(realpath $(dirname $0))/identify_charm_func_tests.py); do
+    tox -re func-target $target
+
+    read -p "Destroy model and run next test? [ENTER]"
+    # cleanup before next run
+    model=`juju list-models| egrep -o "^zaza-\S+"|tr -d '*'`
+    juju destroy-model --no-prompt $model --force --no-wait --destroy-storage
+done
+
+# To troubleshoot issues with a run you can do the following:
+#
+# . .tox/func-target/bin/activate
+# cd tests/distro-regression/
+# model=`juju list-models| egrep -o "^zaza-\S+"|tr -d '*'`
+# functest-configure -m TARGET:$model
+

openstack/tools/identify_charm_func_tests.py

@@ -0,0 +1,20 @@
+# Get names of test targets that OSCI would run for the given charm. Should be
+# run from within the charm root.
+#
+# Outputs space seperated list of target names.
+#
+import os
+import yaml
+
+CLASSIC_TESTS_YAML = 'tests/tests.yaml'
+REACTIVE_TESTS_YAML = os.path.join('src', CLASSIC_TESTS_YAML)
+
+if os.path.exists(REACTIVE_TESTS_YAML):
+    bundles = yaml.safe_load(open(REACTIVE_TESTS_YAML))
+else:
+    bundles = yaml.safe_load(open(CLASSIC_TESTS_YAML))
+
+targets = set(bundles['smoke_bundles'] + bundles['gate_bundles'] +
+              bundles['dev_bundles'])
+
+print(' '.join(sorted(targets)))