Add a poll option to the consumedir script

This was available for docker only via a special entrypoint and is now
integrated into the script.

tools/consumedir/consumedir.sh

@@ -22,7 +22,7 @@ if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
 fi
 
 OPTIONS=omhdp:vrmi
-LONGOPTS=once,distinct,help,delete,path:,verbose,recursive,dry,integration,iuser:,iheader:
+LONGOPTS=once,distinct,help,delete,path:,verbose,recursive,dry,integration,iuser:,iheader:,poll:
 
 ! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
 if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
@@ -36,7 +36,7 @@ eval set -- "$PARSED"
 
 declare -a watchdir
 help=n verbose=n delete=n once=n distinct=n recursive=n dryrun=n
-integration=n iuser="" iheader=""
+integration=n iuser="" iheader="" poll=""
 while true; do
     case "$1" in
         -h|--help)
@@ -84,6 +84,10 @@ while true; do
             iheader="$2"
             shift 2
             ;;
+        --poll)
+            poll="$2"
+            shift 2
+            ;;
         --)
             shift
             break
@@ -108,6 +112,8 @@ showUsage() {
     echo "  -h | --help           Prints this help text. (value: $help)"
     echo "  -m | --distinct       Optional. Upload only if the file doesn't already exist. (value: $distinct)"
     echo "  -o | --once           Instead of watching, upload all files in that dir. (value: $once)"
+    echo "       --poll <sec>     Run the script periodically instead of watching a directory. This can be"
+    echo "                        used if watching via inotify is not possible."
     echo "  -r | --recursive      Traverse the directory(ies) recursively (value: $recursive)"
     echo "  -i | --integration    Upload to the integration endpoint. It implies -r. This puts the script in"
     echo "                          a different mode, where the first subdirectory of any given starting point"
@@ -355,11 +361,7 @@ checkSetup() {
     done
 }
 
-
-# warn if something seems not correctly configured
-checkSetup
-
-if [ "$once" = "y" ]; then
+runOnce() {
     info "Uploading all files (except hidden) in '$watchdir'."
     MD="-maxdepth 1"
     if [ "$recursive" = "y" ]; then
@@ -370,20 +372,37 @@ if [ "$once" = "y" ]; then
             process "$file" "$dir"
         done
     done
+}
+
+
+# warn if something seems not correctly configured
+checkSetup
+
+if [ "$once" = "y" ]; then
+    runOnce
 else
     REC=""
     if [ "$recursive" = "y" ]; then
         REC="-r"
     fi
-    $INOTIFY_CMD $REC -m --format '%w%f' -e close_write -e moved_to "${watchdir[@]}" |
-        while read pathfile; do
-            if [[ "$(basename "$pathfile")" != .* ]]; then
-                dir=$(findDir "$pathfile")
-                trace "The file '$pathfile' appeared below '$dir'"
-                sleep 1
-                process "$(realpath "$pathfile")" "$dir"
-            else
-                trace "Skip hidden file $(realpath "$pathfile")"
-            fi
+    if [ -z "$poll" ]; then
+        $INOTIFY_CMD $REC -m --format '%w%f' -e close_write -e moved_to "${watchdir[@]}" |
+            while read pathfile; do
+                if [[ "$(basename "$pathfile")" != .* ]]; then
+                    dir=$(findDir "$pathfile")
+                    trace "The file '$pathfile' appeared below '$dir'"
+                    sleep 1
+                    process "$(realpath "$pathfile")" "$dir"
+                else
+                    trace "Skip hidden file $(realpath "$pathfile")"
+                fi
+            done
+    else
+        echo "Running in polling mode: ${poll}s"
+        while [ : ]
+        do
+            runOnce
+            sleep $poll
         done
+    fi
 fi