moved db_preparation logic to fill-database phase

Makefile

@@ -12,8 +12,8 @@ SSJ_FILE = "$(MAKE_ROOT)/data/samples/ssj_xml/ssj500k-sl.body.sample.xml"
 KRES_FOLDER = "$(MAKE_ROOT)/data/samples/kres_xml"
 KRES_SRL_FOLDER = "$(MAKE_ROOT)/data/samples/kres_srl_json"
 
-# OUTPUT = "db"
-OUTPUT = "file"
+OUTPUT = "db"
+# OUTPUT = "file"
 OUTDIR = "/tmp/three"  # if you're running this in docker, make sure to mount the volume
 DBADDR = "0.0.0.0:27017"  # don't use localhost
 
@@ -21,6 +21,8 @@ DB_ADM_USER = valadmin
 DB_ADM_PASS = valadminpass
 DB_USR_USER = valuser
 DB_USR_PASS = valuserpass
+
+N_CORES = 1
 export
 
 .PHONY: python-env fill-database
@@ -63,9 +65,11 @@ fill-database: data/samples
 		--ssj-file $(SSJ_FILE) --kres-srl-folder $(KRES_SRL_FOLDER) \
 		--output $(OUTPUT) --outdir $(OUTDIR) --dbaddr $(DBADDR) \
 		--dbuser $(DB_USR_USER) --dbpass $(DB_USR_PASS) \
-		--cores 2
+		--cores $(N_CORES)
+
 
 ## Frontend
+
 ## Run from host
 ## See src/frontend_vue/README.md for port settings etc.
 frontend-dev:
@@ -76,12 +80,15 @@ frontend-prod:
 
 
 ## Backend
-backend-dev-init: python-env-install
-	cd ./src/backend_flask; python3 app.py \
-		--config-file ./conf_files/dev_conf_init.yaml \
-		--dbuser $(DB_USR_USER) --dbpass $(DB_USR_PASS) --dbaddr $(DBADDR)
 
-backend-dev: python-env-install
+# runs once and exits before the app starts
+backend-prepare-db:
+	cd ./src/backend_flask; python3 app.py \
+		--config-file ./conf_files/dev_conf.yaml \
+		--dbuser $(DB_USR_USER) --dbpass $(DB_USR_PASS) --dbaddr $(DBADDR) \
+		--prepare-db
+
+backend-dev:
 	cd ./src/backend_flask; python3 app.py \
 		--config-file ./conf_files/dev_conf.yaml \
 		--dbuser $(DB_USR_USER) --dbpass $(DB_USR_PASS) --dbaddr $(DBADDR)