build: detect if image was to big

Signed-off-by: Paul Spooren <[email protected]>

asu/build.py

@@ -220,12 +220,12 @@ def build(req: dict, job=None):
 
     job.save_meta()
 
+    if any(err in job.meta["stderr"] for err in ["is too big", "out of space?"]):
+        report_error(job, "Selected packages exceed device storage")
+
     if returncode:
         report_error(job, "Error while building firmware. See stdout/stderr")
 
-    if "is too big" in job.meta["stderr"]:
-        report_error(job, "Selected packages exceed device storage")
-
     json_file = store_path / bin_dir / "profiles.json"
 
     if not json_file.is_file():

asu/common.py

@@ -292,12 +292,17 @@ def run_container(
 
         logging.debug(f"Copied {container_tar} to {host_tar}")
 
-        unpack_archive(
-            host_tar.name,
-            copy[1],
-            "tar",
-        )
-        logging.debug(f"Unpacked {host_tar} to {copy[1]}")
+        # check if the tar is empty
+        if host_tar.tell():
+            unpack_archive(
+                host_tar.name,
+                copy[1],
+                "tar",
+            )
+            logging.debug(f"Unpacked {host_tar} to {copy[1]}")
+        else:
+            logging.warning(f"Empty tar: {host_tar}")
+            returncode = 1
 
         host_tar.close()
         logging.debug(f"Closed {host_tar}")