Prepare openrc for juju version 3

development/shared/openrc

@@ -1,27 +1,70 @@
+# Checks to see if the juju model has been predefined
 if [ ! -z $JUJU_MODEL ]; then
   _juju_model_arg="-m $JUJU_MODEL"
 fi
-_keystone_major_version=$(juju status $_juju_model_arg keystone --format yaml| \
-    awk '/^    version:/ {print $2; exit}' | cut -f1 -d\.)
+
+# Make sure jq is installed
+if ! command -v jq >/dev/null 2>&1; then
+    echo "jq is required to run this script. Please install it and try again."
+    exit 1
+fi
+
+# Make sure openstack client is installed
+if ! command -v openstack >/dev/null 2>&1; then
+    echo "openstack client is required to run this script. Please install it and try again."
+    exit 1
+fi
+
+# Check juju major version
+_juju_version=$(juju version | cut -f1 -d\. )
+
+# Checks for keystone version.
+_keystone_major_version=$(juju status $_juju_model_arg keystone --format json | jq -r '.applications.keystone.version' | cut -f1 -d\.)
 _keystone_preferred_api_version=$(juju config $_juju_model_arg keystone preferred-api-version)
 
 # The per user snap data directory is not created until first execution of snap
 openstack --version 2>&1 > /dev/null || true
 
+# Checks for a place to store the root CA and gets the CA from Vault
 if [ -d ~/snap/openstackclients/common/ ]; then
   # When using the openstackclients confined snap the certificate has to be
   # placed in a location reachable by the clients in the snap.
   _root_ca=~/snap/openstackclients/common/${JUJU_MODEL-""}root-ca.crt
 else
   _root_ca=/tmp/${JUJU_MODEL-""}root-ca.crt
 fi
-juju run $_juju_model_arg --unit vault/leader 'leader-get root-ca' | tee $_root_ca >/dev/null 2>&1
+if [ "$_juju_version" -ge "3" ]; then
+  # Juju 3.0 and above
+  juju run $_juju_model_arg --format=json --quiet vault/leader get-root-ca | jq -r '.[].results.output' | tee $_root_ca >/dev/null 2>&1
+else
+  # Juju 2.9 and below
+  juju run $_juju_model_arg --unit vault/leader 'leader-get root-ca' | tee $_root_ca >/dev/null 2>&1
+fi
 
-if [ $_keystone_major_version -ge 13 -o \
-     "$_keystone_preferred_api_version" = '3' ]; then
-    echo Using Keystone v3 API
-    . $(dirname ${BASH_SOURCE[0]})/openrcv3_project
+# Check shell and run the appropriate openrc file
+_shell=$(ps -p $$ | tail -n 1 | awk '{print $4}')
+echo "Shell: $_shell"
+if [ "$_shell" = "bash" ]; then
+  if [ $_keystone_major_version -ge 13 -o \
+      "$_keystone_preferred_api_version" = '3' ]; then
+      echo Using Keystone v3 API
+      . $(dirname ${BASH_SOURCE[0]})/openrcv3_project
+  else
+      echo Using Keystone v2.0 API
+      . $(dirname ${BASH_SOURCE[0]})/openrcv2
+  fi
+  # shell is zsh or -zsh
+elif [ "$_shell" = "zsh" ] || [ "$_shell" = "-zsh" ]; then
+  if [ $_keystone_major_version -ge 13 -o \
+      "$_keystone_preferred_api_version" = '3' ]; then
+      echo Using Keystone v3 API
+      . $(dirname ${(%):-%x})/openrcv3_project
+  else
+      echo Using Keystone v2.0 API
+      . $(dirname ${(%):-%x})/openrcv2
+  fi
 else
-    echo Using Keystone v2.0 API
-    . $(dirname ${BASH_SOURCE[0]})/openrcv2
+  echo "Unsupported shell: $_shell"
+  exit 1
 fi
+

development/shared/openrcv3_project

@@ -1,16 +1,46 @@
-_OS_PARAMS=$(env | awk 'BEGIN {FS="="} /^OS_/ {print $1;}' | paste -sd ' ')
+# Get and clear all the environment variables beginning with OS_
+_OS_PARAMS=$(env | awk 'BEGIN {FS="="} /^OS_/ {print $1;}' | paste -sd ' ' '-')   # the manual for paste specifies that '-' should be used when piping from stdin
+# Fix _OS_PARAMS to be array in zsh
+if [ "$_shell" = "zsh" ] || [ "$_shell" = "-zsh" ]; then
+  _OS_PARAMS=(${(s/ /)_OS_PARAMS})
+fi
+# Inform the user of the environment variables that will be cleared
+if [ -n "$_OS_PARAMS" ]; then
+  echo "The following environment variables will be cleared: $_OS_PARAMS"
+fi
 for param in $_OS_PARAMS; do
+    # echo "Clearing $param"  # debug
     unset $param
 done
 unset _OS_PARAMS
 
+# Check juju version
+_juju_version=$(juju version | cut -f1 -d\. )
+
+# Get keystone ip address
 _keystone_vip=$(juju config $_juju_model_arg keystone vip)
 if [ -n "$_keystone_vip" ]; then
     _keystone_ip=$(echo $_keystone_vip | awk '{print $1}')
 else
-    _keystone_ip=$(juju run $_juju_model_arg --unit keystone/leader -- 'network-get --bind-address public')
+    if [ "$_juju_version" -ge "3" ]; then
+        # Juju 3.0 and above
+        # This method would probably work for Juju 2.9 and below, but it I will leave it as is for now.
+        _keystone_ip=$(juju status $_juju_model_arg keystone/leader --format json | jq -r '.applications.keystone.units[] | select(.leader == true) | ."public-address"')
+    else
+        # Juju 2.9 and below
+        _keystone_ip=$(juju run $_juju_model_arg --unit keystone/leader -- 'network-get --bind-address public')
+    fi
+fi
+
+# Get admin password
+if [ "$_juju_version" -ge "3" ]; then
+    # Juju 3.0 and above
+    _password=$(juju run $_juju_model_arg keystone/leader get-admin-password --quiet | awk '{print $2; exit}')
+else
+    # Juju 2.9 and below
+    _password=$(juju run $_juju_model_arg --unit keystone/leader 'leader-get admin_passwd')
 fi
-_password=$(juju run $_juju_model_arg --unit keystone/leader 'leader-get admin_passwd')
+
 
 if [ ! -z "$_root_ca" -a -s "$_root_ca" ]; then
     export OS_AUTH_PROTOCOL=https
@@ -28,3 +58,26 @@ export OS_IDENTITY_API_VERSION=3
 export OS_AUTH_VERSION=3
 # Gnocchi needs this
 export OS_AUTH_TYPE=password
+
+# # Debug
+# echo "Environment variables set:"
+# echo "env | grep OS_ result:"
+# env | grep OS_
+# echo
+# echo "If environment variables are not set, then run the following commands:"
+# if [ ! -z "$_root_ca" -a -s "$_root_ca" ]; then
+#     echo "export OS_AUTH_PROTOCOL=https"
+#     echo "export OS_CACERT=${_root_ca}"
+# fi
+# echo "export OS_AUTH_URL=${OS_AUTH_PROTOCOL:-http}://${_keystone_ip}:5000/v3"
+# echo "export OS_USERNAME=admin"
+# echo "export OS_PASSWORD=${_password}"
+# echo "export OS_USER_DOMAIN_NAME=admin_domain"
+# echo "export OS_PROJECT_DOMAIN_NAME=admin_domain"
+# echo "export OS_PROJECT_NAME=admin"
+# echo "export OS_REGION_NAME=RegionOne"
+# echo "export OS_IDENTITY_API_VERSION=3"
+# # Swift needs this:
+# echo "export OS_AUTH_VERSION=3"
+# # Gnocchi needs this
+# echo "export OS_AUTH_TYPE=password"