Add openstack charm func test runner

Supports running Openstack charm functional tests
manually in a similar way to OSCI.

Includes tool to identify func test targets from
the charm.

openstack/tools/charmed_openstack_functest_runner.sh

@@ -0,0 +1,121 @@
+#!/bin/bash -eux
+#
+# Run Charmed Openstack CI tests manually in a similar way to how they are run
+# by OpenStack CI (OSCI).
+#
+# Usage: clone/fetch charm to test and run from within charm root dir.
+#
+FUNC_TEST_PR=
+FUNC_TEST_TARGET=
+SKIP_BUILD=false
+
+usage () { echo "USAGE: --func-test-target | --func-test-pr | --skip-build"; }
+
+while (($# > 0))
+do
+    case "$1" in
+        # Provide the name of a specific test target to run. If none provided
+        # all tests are run based on what is defined in osci.yaml i.e. will do
+        # what osci would do by default.
+        --func-test-target)
+           FUNC_TEST_TARGET=$2
+           shift
+           ;;
+        # Provides similar functionality to Func-Test-Pr in commit message. Set
+        # to zaza-openstack-tests Pull Request ID.
+        --func-test-pr)
+           FUNC_TEST_PR=$2
+           shift
+           ;;
+        # Skip building charm is already done to save time.
+        --skip-build)
+          SKIP_BUILD=true
+          ;;
+        --help|-h)
+          usage
+          exit 0
+          ;;
+        *)
+          echo "ERROR: invalid input '$1'"
+          usage      
+          exit 1
+          ;;
+    esac
+    shift
+done
+
+source ~/novarc
+export {,TEST_}CIDR_EXT=`openstack subnet show subnet_${OS_USERNAME}-psd-extra -c cidr -f value`
+FIP_MAX=$(ipcalc $CIDR_EXT| awk '$1=="HostMax:" {print $2}')
+FIP_MIN=$(ipcalc $CIDR_EXT| awk '$1=="HostMin:" {print $2}')
+FIP_MIN_ABC=${FIP_MIN%.*}
+FIP_MIN_D=${FIP_MIN##*.}
+FIP_MIN=${FIP_MIN_ABC}.$(($FIP_MIN_D + 64))
+
+CIDR_OAM=`openstack subnet show subnet_${OS_USERNAME}-psd -c cidr -f value`
+OAM_MAX=$(ipcalc $CIDR_OAM| awk '$1=="HostMax:" {print $2}')
+OAM_MIN=$(ipcalc $CIDR_OAM| awk '$1=="HostMin:" {print $2}')
+OAM_MIN_ABC=${OAM_MIN%.*}
+OAM_MAX_D=${OAM_MAX##*.}
+# Picking last two addresses and hoping they dont get used by Neutron.
+export OS_VIP00=${OAM_MIN_ABC}.$(($OAM_MAX_D - 1))
+export OS_VIP01=${OAM_MIN_ABC}.$(($OAM_MAX_D - 2))
+
+# More information on config https://github.com/openstack-charmers/zaza/blob/master/doc/source/runningcharmtests.rst
+export {,TEST_}NET_ID=$(openstack network show net_${OS_USERNAME}-psd-extra -f value -c id)
+export {,TEST_}FIP_RANGE=$FIP_MIN:$FIP_MAX
+export {,TEST_}GATEWAY=$(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 SWIFT_IP=10.140.56.22
+export TEST_MODEL_SETTINGS="image-stream=released;default-series=jammy;test-mode=true;transmit-vendor-metrics=false"
+# 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
+
+# NOTE: this should not be necessary for > juju 2.x but since we still have a need for it we add it in
+export TEST_ZAZA_BUG_LP1987332=1
+
+# Some charms point to an upstream constraints file that installs python-libjuju 2.x so we need to do this to ensure we get 3.x
+export TEST_CONSTRAINTS_FILE=https://raw.githubusercontent.com/openstack-charmers/zaza/master/constraints-juju34.txt
+
+# 2. Build
+if ! $SKIP_BUILD; then
+    sudo snap refresh charmcraft --channel $(grep charmcraft_channel osci.yaml| sed -r 's/.+:\s+(\S+)/\1/')
+
+    # ensure lxc initialised
+    lxd init --auto || true
+
+    tox -re build
+fi
+
+# 3. Run functional tests.
+
+# If a func test pr is provided switch to that pr.
+if [[ -n $FUNC_TEST_PR ]]; then
+    (
+    [[ -d src ]] && cd src
+    # We use the zosci-config tools to do this.
+    [[ -d ~/zosci-config ]] || ( cd; git clone https://github.com/openstack-charmers/zosci-config; )
+    (cd ~/zosci-config; git checkout master; git pull;)
+    MSG=$(echo "Func-Test-Pr: https://github.com/openstack-charmers/zaza-openstack-tests/pull/$FUNC_TEST_PR"| base64)
+    ~/zosci-config/roles/handle-func-test-pr/files/process_func_test_pr.py -f ./test-requirements.txt "$MSG"
+    )
+fi
+
+if [[ -n $FUNC_TEST_TARGET ]]; then
+  func_targets=( $FUNC_TEST_TARGET )
+else
+  func_targets=( $(python3 $(realpath $(dirname $0))/identify_charm_func_tests.py) )
+fi
+
+for target in ${func_targets[@]}; do
+    [[ -d src ]] && pushd src || true
+    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
+

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)))