Cache online_repo listing for 10 seconds

usr/lib/python3.8/spoc/repo_local.py

@@ -9,7 +9,7 @@ from .config import REPO_FILE, REPO_LOCK_FILE, TYPE_APP, TYPE_CONTAINER, TYPE_IM
 from .flock import locked
 
 data = {TYPE_IMAGE: {}, TYPE_CONTAINER: {}, TYPE_APP: {}}
-mtime = None
+mtime = 0
 
 def load():
     global data

usr/lib/python3.8/spoc/repo_online.py

@@ -67,10 +67,13 @@ def unpack_archive(archive_path, destination, expected_hash, observer):
     os.unlink(archive_path)
 
 data = None
+mtime = 0
 
 def load():
     global data
-    if not data:
+    global mtime
+    # Cache the result for 10 seconds
+    if mtime < time.time()-10:
         with requests.Session() as session:
             resource = session.get(ONLINE_REPO_URL, timeout=5)
             resource.raise_for_status()
@@ -80,6 +83,7 @@ def load():
             packages_sig = resource.content
         PUBLIC_KEY.verify(packages_sig, packages, ec.ECDSA(hashes.SHA512()))
         data = json.loads(packages.decode())
+        mtime = time.time()
 
 def get_entries(entry_type):
     load()

usr/lib/python3.8/spoc/repo_publish.py

@@ -35,7 +35,7 @@ def sign_file(file_path):
     return private_key.sign(hasher.finalize(), ec.ECDSA(utils.Prehashed(sha512)))
 
 data = {TYPE_IMAGE: {}, TYPE_APP: {}}
-mtime = None
+mtime = 0
 
 def load():
     global data