Selective JSON/JSONL sync with preserved directory structure

Makefile_rsync.mk

# --- Configuration ---
SOURCE_DIR := /path/to/src/
DEST_HOST  := host_name_in_ssh_config
DEST_PATH  := /path/to/dest

# --- Flags ---
# -a: Archive (preserve permissions/times)
# -v: Verbose (see what's happening)
# -z: Compress (faster over network)
# -R: Relative (ensures directory structure is preserved)/Don't use -> redundant in this context
# Using standard flags; --files-from handles relative paths automatically
RSYNC_FLAGS := -avz --from0 --files-from=-

.PHONY: sync dry-run check-conn help

# Default target
all: help

help: ## Show this help message
	@echo "Description: Selective JSON/JSONL sync with preserved directory structure"
	@echo "Usage: make [target]"
	@echo ""
	@echo "Targets:"
	@printf "  \033[36m%-15s\033[0m %s\n" "help" "Show this help message"
	@grep -E '^[a-zA-Z_-]+:.*?## ' $(MAKEFILE_LIST) \
		| grep -v '^help:' \
		| awk 'BEGIN {FS = ":.*?## "}; \
		{printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2}'

sync: ## Starting sync to the destination host (preserving structure)
	@echo "Starting sync to $(DEST_HOST)..."
	cd $(SOURCE_DIR) && find . -type f \( -name "*.json" -o -name "*.jsonl" \) -print0 | \
	rsync $(RSYNC_FLAGS) . $(DEST_HOST):$(DEST_PATH)
	@echo "Sync complete."

dry-run: ## Performing dry-run (simulation)
	@echo "Performing dry-run (simulation)..."
	cd $(SOURCE_DIR) && find . -type f \( -name "*.json" -o -name "*.jsonl" \) -print0 | \
	rsync -n $(RSYNC_FLAGS) . $(DEST_HOST):$(DEST_PATH)
	@echo "Dry-run finished. Review the list above."

check-conn: ## Quick check if the remote is reachable
	@ssh -q $(DEST_HOST) exit && echo "$(DEST_HOST) is reachable." || \
	echo "Cannot reach $(DEST_HOST)."