Merge pull request #27 from bhuvi8/master

Added rsync error handling and modified WARN and ERROR functions to print to stderr

rsync_tmbackup.sh

@@ -7,8 +7,8 @@ APPNAME=$(basename $0 | sed "s/\.sh$//")
 # -----------------------------------------------------------------------------
 
 fn_log_info()  { echo "$APPNAME: $1"; }
-fn_log_warn()  { echo "$APPNAME: [WARNING] $1"; }
-fn_log_error() { echo "$APPNAME: [ERROR] $1"; }
+fn_log_warn()  { echo "$APPNAME: [WARNING] $1" 1>&2; }
+fn_log_error() { echo "$APPNAME: [ERROR] $1" 1>&2; }
 
 # -----------------------------------------------------------------------------
 # Make sure everything really stops when CTRL+C is pressed
@@ -214,7 +214,6 @@ while : ; do
 
 	touch -- "$INPROGRESS_FILE"
 	eval $CMD
-	RSYNC_EXIT_CODE=$?
 
 	# -----------------------------------------------------------------------------
 	# Check if we ran out of space
@@ -223,8 +222,6 @@ while : ; do
 	# TODO: find better way to check for out of space condition without parsing log.
 	NO_SPACE_LEFT="$(grep "No space left on device (28)\|Result too large (34)" "$LOG_FILE")"
 
-	rm -- "$LOG_FILE"
-
 	if [ -n "$NO_SPACE_LEFT" ]; then
 		fn_log_warn "No space left on device - removing oldest backup and resuming."
 
@@ -239,9 +236,12 @@ while : ; do
 		continue
 	fi
 
-	if [ "$RSYNC_EXIT_CODE" != "0" ]; then
-		fn_log_error "Exited with error code $RSYNC_EXIT_CODE"
-		exit $RSYNC_EXIT_CODE
+	# -----------------------------------------------------------------------------
+	# Check whether rsync reported any errors
+	# -----------------------------------------------------------------------------
+	if [[ "$(sed -n '/rsync error:/p;/rsync:/p' -- "$LOG_FILE" | wc -l)" -ge 1 ]]; then
+		fn_log_error "Encountered error, please check $LOG_FILE for more details."
+		exit 1
 	fi
 
 	# -----------------------------------------------------------------------------
@@ -252,7 +252,9 @@ while : ; do
 	ln -vs -- "$(basename -- "$DEST")" "$DEST_FOLDER/latest"
 
 	rm -f -- "$INPROGRESS_FILE"
-	# TODO: grep for "^rsync error:.*$" in log
+	rm -- "$LOG_FILE"
+
 	fn_log_info "Backup completed without errors."
+
 	exit 0
 done