🔧 Add lifecycle to GCS bucket

Makefile

@@ -1,4 +1,6 @@
-#See: https://cloud.google.com/functions/docs/2nd-gen/getting-started#pubsub
+# See:
+# https://cloud.google.com/functions/docs/2nd-gen/getting-started#pubsub
+# https://cloud.google.com/storage/docs/lifecycle-configurations#delete-objects-json
 
 REGION=asia-northeast1
 PROJECT_ID=$(shell gcloud config get-value project)
@@ -26,10 +28,12 @@ init:
 	@echo "---- create bucket and set versioning. ----"
 	-gsutil mb -c regional -l $(REGION) gs://$(BUCKET_NAME)
 	-gsutil versioning set on gs://$(BUCKET_NAME)
+	-gsutil lifecycle set ./lifecycle.json gs://$(BUCKET_NAME)
 	@echo
 	@echo "---- create bucket and set versioning, for test. ----"
 	-gsutil mb -c regional -l $(REGION) gs://$(BUCKET_NAME)-test
 	-gsutil versioning set on gs://$(BUCKET_NAME)-test
+	-gsutil lifecycle set ./lifecycle.json gs://$(BUCKET_NAME)-test
 	@echo
 	@echo "---- check resources in google cloud console. ----"
 	make open

lifecycle.json

@@ -0,0 +1,26 @@
+{
+  "lifecycle": {
+    "rule": [
+      {
+        "action": {
+          "type": "SetStorageClass",
+          "storageClass": "NEARLINE"
+        },
+        "condition": {
+          "age": 1,
+          "matchesStorageClass": ["REGIONAL", "STANDARD"]
+        }
+      },
+      {
+        "action": {
+          "type": "SetStorageClass",
+          "storageClass": "COLDLINE"
+        },
+        "condition": {
+          "age": 2,
+          "matchesStorageClass": ["NEARLINE"]
+        }
+      }
+    ]
+  }
+}