Implement improvements from #3039

plugins/ps/subcommands/stopall

@@ -1,13 +1,37 @@
 #!/usr/bin/env bash
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+source "$PLUGIN_AVAILABLE_PATH/config/functions"
 source "$PLUGIN_AVAILABLE_PATH/ps/functions"
 
 ps_stopall_cmd() {
   declare desc="stops all apps via command line"
   local cmd="ps:stopall"
+  local GNU_PARALLEL
+
+  if which parallel > /dev/null 2>&1; then
+    dokku_log_info1 "Rebuilding in parallel"
+    GNU_PARALLEL=$(parallel -V 2>&1 | grep GNU || true)
+    if [[ -z "$GNU_PARALLEL" ]]; then
+      # shellcheck disable=SC2046
+      parallel -i bash -c "dokku ps:stop {}" -- $(dokku_apps)
+    else
+      dokku_apps | parallel 'dokku ps:stop {}'
+    fi
+    return
+  fi
+
   for app in $(dokku_apps); do
-    ps_stop "$app"
+    if ! (is_deployed "$app"); then
+      dokku_log_warn "App $app has not been deployed"
+      continue
+    fi
+
+    dokku_log_verbose "Stopping app $app ..."
+    if ps_stop "$app"; then
+      continue
+    fi
+    dokku_log_warn "dokku ps:stop ${app} failed"
   done
 }