Keep cached ZAP output fresh with validator function

examples/chef/chef.py

@@ -177,6 +177,49 @@ def main(argv: Sequence[str]) -> None:
 
     splash()
 
+    chef_zzz_root = os.path.join(_CHEF_SCRIPT_PATH, "zzz_generated")
+    ci_manifest_file_name = os.path.join(_CHEF_SCRIPT_PATH, "cimanifest.json")
+    chef_devices_dir = os.path.join(_CHEF_SCRIPT_PATH, "devices")
+
+    #
+    # Validate zzz_generated
+    #
+
+    if options.validate_zzz:
+        ci_manifest = {}
+        print(f"Validating {chef_zzz_root}")
+        for device_dir_item in os.listdir(chef_devices_dir):
+            target_file_ext = ".zap"
+            if device_dir_item.endswith(target_file_ext) and device_dir_item == 'lightin\
+g-app.zap':
+                device_name = device_dir_item[:-len(target_file_ext)]
+                device_file_path = os.path.join(chef_devices_dir, device_dir_item)
+                with open(device_file_path, "rb") as device_file:
+                    device_file_data = device_file.read()
+                    device_file_md5 = hashlib.md5(device_file_data).hexdigest()
+                    ci_manifest[device_name] = device_file_md5
+                    print(f"Manifest for {device_name} : {device_file_md5}")
+        git_cmd = ["git", "ls-tree", "master", "third_party/zap/repo"]
+        zap_commit = str(subprocess.check_output(git_cmd, cwd=_REPO_BASE_PATH))
+        zap_commit = zap_commit.split(" ")[2]
+        zap_commit = zap_commit[:zap_commit.index("\\")]
+        print(f"zap commit: {zap_commit}")
+        ci_manifest["zap_commit"] = zap_commit
+        with open(ci_manifest_file_name, "r", encoding="utf-8") as ci_manifest_file:
+            cached_manifest = json.loads(ci_manifest_file.read())
+            for device in ci_manifest:
+                if device != "zap_commit" and device == "lighting-app":
+                    # Filter to one example
+                    if cached_manifest[device] != ci_manifest[device]:
+                        print("Cached files out of date. Please run chef with the flag --generate_zzz and commit")
+                        exit(1)
+                if device == "zap_commit" and False:
+                    # Disabled for now
+                    if cached_manifest[device] != ci_manifest[device]:
+                        print("ZAP updated in master, please pull master and run chef with the flag --generate_zzz and commit")
+                        exit(1)
+        exit(0)
+
     #
     # ZAP bootstrapping
     #
@@ -219,6 +262,7 @@ def main(argv: Sequence[str]) -> None:
         for device_dir_item in os.listdir(chef_devices_dir):
             target_file_ext = ".zap"
             if device_dir_item.endswith(target_file_ext) and device_dir_item == 'lighting-app.zap':
+                # Filter to one example
                 device_name = device_dir_item[:-len(target_file_ext)]
                 device_file_path = os.path.join(chef_devices_dir, device_dir_item)
                 with open(device_file_path, "rb") as device_file: