Clean up remainders of USE_SYSTEMD and logging setup

We dropped the ability to override USE_SYSTEMD to False when we deleted
screen support in [0], so we can also clean up any conditionals based
on it.

Also clean up the logging setup functions, dropping local vars for
parameters that we don't actually support anymore.

[0] I8c27182f60b0f5310b3a8bf5feb02beb7ffbb26a

Change-Id: I5cbce9f2c42e111761e8689447b3f8cbb7ea2eb5

clean.sh

@@ -123,12 +123,10 @@ if [[ -n "$LOGDIR" ]] && [[ -d "$LOGDIR" ]]; then
     sudo rm -rf $LOGDIR
 fi
 
-# Clean out the systemd user unit files if systemd was used.
+# Clean out the systemd unit files.
-if [[ "$USE_SYSTEMD" = "True" ]]; then
 sudo find $SYSTEMD_DIR -type f -name '*devstack@*service' -delete
 # Make systemd aware of the deletion.
 $SYSTEMCTL daemon-reload
-fi
 
 # Clean up venvs
 DIRS_TO_CLEAN="$WHEELHOUSE ${PROJECT_VENV[@]} .config/openstack"

functions

@@ -635,40 +635,29 @@ function vercmp {
 # This sets up defaults we like in devstack for logging for tracking
 # down issues, and makes sure everything is done the same between
 # projects.
+# NOTE(jh): Historically this function switched between three different
+# functions: setup_systemd_logging, setup_colorized_logging and
+# setup_standard_logging_identity. Since we always run with systemd now,
+# this could be cleaned up, but the other functions may still be in use
+# by plugins. Since deprecations haven't worked in the past, we'll just
+# leave them in place.
 function setup_logging {
-    local conf_file=$1
+    setup_systemd_logging $1
-    local other_cond=${2:-"False"}
-    if [[ "$USE_SYSTEMD" == "True" ]]; then
-        setup_systemd_logging $conf_file
-    elif [ "$LOG_COLOR" == "True" ] && [ "$SYSLOG" == "False" ] && [ "$other_cond" == "False" ]; then
-        setup_colorized_logging $conf_file
-    else
-        setup_standard_logging_identity $conf_file
-    fi
 }
 
 # This function sets log formatting options for colorizing log
 # output to stdout. It is meant to be called by lib modules.
-# The last two parameters are optional and can be used to specify
-# non-default value for project and user format variables.
-# Defaults are respectively 'project_name' and 'user_name'
-#
-# setup_colorized_logging something.conf SOMESECTION
 function setup_colorized_logging {
     local conf_file=$1
-    local conf_section="DEFAULT"
-    local project_var="project_name"
-    local user_var="user_name"
     # Add color to logging output
-    iniset $conf_file $conf_section logging_context_format_string "%(asctime)s.%(msecs)03d %(color)s%(levelname)s %(name)s [%(request_id)s %("$project_var")s %("$user_var")s%(color)s] %(instance)s%(color)s%(message)s"
+    iniset $conf_file DEFAULT logging_context_format_string "%(asctime)s.%(msecs)03d %(color)s%(levelname)s %(name)s [%(request_id)s %(project_name)s %(user_name)s%(color)s] %(instance)s%(color)s%(message)s"
-    iniset $conf_file $conf_section logging_default_format_string "%(asctime)s.%(msecs)03d %(color)s%(levelname)s %(name)s [-%(color)s] %(instance)s%(color)s%(message)s"
+    iniset $conf_file DEFAULT logging_default_format_string "%(asctime)s.%(msecs)03d %(color)s%(levelname)s %(name)s [-%(color)s] %(instance)s%(color)s%(message)s"
-    iniset $conf_file $conf_section logging_debug_format_suffix "from (pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)d"
+    iniset $conf_file DEFAULT logging_debug_format_suffix "from (pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)d"
-    iniset $conf_file $conf_section logging_exception_prefix "%(color)s%(asctime)s.%(msecs)03d TRACE %(name)s %(instance)s"
+    iniset $conf_file DEFAULT logging_exception_prefix "%(color)s%(asctime)s.%(msecs)03d TRACE %(name)s %(instance)s"
 }
 
 function setup_systemd_logging {
     local conf_file=$1
-    local conf_section="DEFAULT"
     # NOTE(sdague): this is a nice to have, and means we're using the
     # native systemd path, which provides for things like search on
     # request-id. However, there may be an eventlet interaction here,
@@ -676,16 +665,16 @@ function setup_systemd_logging {
     USE_JOURNAL=$(trueorfalse False USE_JOURNAL)
     local pidstr=""
     if [[ "$USE_JOURNAL" == "True" ]]; then
-        iniset $conf_file $conf_section use_journal "True"
+        iniset $conf_file DEFAULT use_journal "True"
         # if we are using the journal directly, our process id is already correct
     else
         pidstr="(pid=%(process)d) "
     fi
-    iniset $conf_file $conf_section logging_debug_format_suffix "{{${pidstr}%(funcName)s %(pathname)s:%(lineno)d}}"
+    iniset $conf_file DEFAULT logging_debug_format_suffix "{{${pidstr}%(funcName)s %(pathname)s:%(lineno)d}}"
 
-    iniset $conf_file $conf_section logging_context_format_string "%(color)s%(levelname)s %(name)s [%(global_request_id)s %(request_id)s %(project_name)s %(user_name)s%(color)s] %(instance)s%(color)s%(message)s"
+    iniset $conf_file DEFAULT logging_context_format_string "%(color)s%(levelname)s %(name)s [%(global_request_id)s %(request_id)s %(project_name)s %(user_name)s%(color)s] %(instance)s%(color)s%(message)s"
-    iniset $conf_file $conf_section logging_default_format_string "%(color)s%(levelname)s %(name)s [-%(color)s] %(instance)s%(color)s%(message)s"
+    iniset $conf_file DEFAULT logging_default_format_string "%(color)s%(levelname)s %(name)s [-%(color)s] %(instance)s%(color)s%(message)s"
-    iniset $conf_file $conf_section logging_exception_prefix "ERROR %(name)s %(instance)s"
+    iniset $conf_file DEFAULT logging_exception_prefix "ERROR %(name)s %(instance)s"
 }
 
 function setup_standard_logging_identity {

stack.sh

@@ -803,13 +803,11 @@ fixup_all
 # Install subunit for the subunit output stream
 pip_install -U os-testr
 
-if [[ "$USE_SYSTEMD" == "True" ]]; then
 pip_install_gr systemd-python
 # the default rate limit of 1000 messages / 30 seconds is not
 # sufficient given how verbose our logging is.
 iniset -sudo /etc/systemd/journald.conf "Journal" "RateLimitBurst" "0"
 sudo systemctl restart systemd-journald
-fi
 
 # Virtual Environment
 # -------------------
@@ -1521,14 +1519,11 @@ if [[ -n "$DEPRECATED_TEXT" ]]; then
     echo
 fi
 
-# If USE_SYSTEMD is enabled, tell the user about using it.
-if [[ "$USE_SYSTEMD" == "True" ]]; then
 echo
 echo "Services are running under systemd unit files."
 echo "For more information see: "
 echo "https://docs.openstack.org/devstack/latest/systemd.html"
 echo
-fi
 
 # Useful info on current state
 cat /etc/devstack-version

stackrc

@@ -109,9 +109,7 @@ CELLSV2_SETUP=${CELLSV2_SETUP:-"superconductor"}
 # Set the root URL for Horizon
 HORIZON_APACHE_ROOT="/dashboard"
 
-# Whether to use SYSTEMD to manage services, we only do this from
+# Whether to use user specific units for running services or global ones.
-# Queens forward.
-USE_SYSTEMD="True"
 USER_UNITS=$(trueorfalse False USER_UNITS)
 if [[ "$USER_UNITS" == "True" ]]; then
     SYSTEMD_DIR="$HOME/.local/share/systemd/user"