implement central deploy lock and use in tar plugin

plugins/tar/functions

@@ -2,26 +2,10 @@
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
 
-tar_build_cmd() {
-  declare desc="calls tar:build-locked via command line"
-  local cmd="tar:build"
-
-  verify_app_name "$2"
-  local APP="$2"; local APP_BUILD_LOCK="$DOKKU_ROOT/$APP/.build.lock"
-  local APP_BUILD_LOCK_MSG="$APP is currently being deployed or locked. Waiting..."
-  [[ $(flock -n "$APP_BUILD_LOCK" true &>/dev/null ; echo $?) -ne 0 ]] && echo "$APP_BUILD_LOCK_MSG"
-
-  shift 1
-  flock -o "$APP_BUILD_LOCK" tar_build_locked_cmd "tar:build-locked" "$@"
-}
-
-tar_build_locked_cmd() {
+tar_build() {
   declare desc="builds apps from tarball via command line"
-  local cmd="tar:build-locked"
-  local APP="$2"
-
-  verify_app_name "$2"
-  shift 2
+  local APP="$1"; verify_app_name "$APP"
+  shift 1
 
   # clean up after ourselves
   local TAR_BUILD_TMP_WORK_DIR=$(mktemp -d "/tmp/dokku_tar.XXXX")
@@ -49,16 +33,6 @@ tar_build_locked_cmd() {
   fi
 }
 
-tar_from_cmd() {
-  declare desc="deploys app from tarball at URL via command line"
-  local cmd="tar:from"
-  verify_app_name "$2"
-  local APP=$2
-  local URL=$3
-  shift 3
-  curl -# --insecure -L "$URL" | tar_in_cmd "tar:in" "$APP" "$@"
-}
-
 tar_in_cmd() {
   declare desc="deploys app from tarball on STDIN via command line"
   local cmd="tar:in"
@@ -68,3 +42,13 @@ tar_in_cmd() {
   tee "$DOKKU_ROOT/$APP/src.tar" | wc -c
   plugn trigger receive-app "$APP"
 }
+
+tar_from_cmd() {
+  declare desc="deploys app from tarball at URL via command line"
+  local cmd="tar:from"
+  verify_app_name "$2"
+  local APP=$2
+  local URL=$3
+  shift 3
+  curl -# --insecure -L "$URL" | tar_in_cmd "tar:in" "$APP" "$@"
+}