Add a script to mass-update cluster revisions in our .zap files. (project-chip#26514)

We're going to need to do this for several clusters, and doing it by hand is
really painful.

Also fixes a bug in zap_convert_all.py when run in non-parallel mode.

Author: bzbarsky-apple

scripts/tools/zap/update_cluster_revisions.py

@@ -0,0 +1,154 @@
+#!/usr/bin/env python3
+#
+#    Copyright (c) 2020 Project CHIP Authors
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+import argparse
+import json
+import logging
+import multiprocessing
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+CHIP_ROOT_DIR = os.path.realpath(
+    os.path.join(os.path.dirname(__file__), '../../..'))
+
+
+def getTargets():
+    ROOTS_TO_SEARCH = [
+        './examples',
+        './src/controller/data_model',
+        './scripts/tools/zap/tests/inputs',
+    ]
+
+    targets = []
+    for root in ROOTS_TO_SEARCH:
+        for filepath in Path(root).rglob('*.zap'):
+            targets.append(filepath)
+
+    return targets
+
+
+def checkPythonVersion():
+    if sys.version_info[0] < 3:
+        print('Must use Python 3. Current version is ' +
+              str(sys.version_info[0]))
+        exit(1)
+
+
+def runArgumentsParser():
+    parser = argparse.ArgumentParser(
+        description='Update the ClusterRevision for a chosen cluster in all .zap files')
+    parser.add_argument('--cluster-id', default=None, action='store',
+                        help='The id of the cluster, as hex, for which the cluster revision should be updated.')
+    parser.add_argument('--new-revision', default=None, action='store',
+                        help='The new cluster revision as a decimal integer')
+    parser.add_argument('--old-revision', default=None, action='store',
+                        help='If set, only clusters with this old revision will be updated.  This is a decimal integer.')
+    parser.add_argument('--dry-run', default=False, action='store_true',
+                        help="Don't do any generation, just log what .zap files would be updated (default: False)")
+    parser.add_argument('--parallel', action='store_true')
+    parser.add_argument('--no-parallel', action='store_false', dest='parallel')
+    parser.set_defaults(parallel=True)
+
+    args = parser.parse_args()
+
+    if args.cluster_id is None:
+        logging.error("Must have a cluster id")
+        sys.exit(1)
+
+    if args.new_revision is None:
+        logging.error("Must have a new cluster revision")
+        sys.exit(1)
+
+    args.cluster_id = int(args.cluster_id, 16)
+
+    return args
+
+
+def isClusterRevisionAttribute(attribute):
+    if attribute['mfgCode'] is not None:
+        return False
+
+    if attribute['code'] != 0xFFFD:
+        return False
+
+    if attribute['name'] != "ClusterRevision":
+        logging.error("Attribute has ClusterRevision id but wrong name")
+        return False
+
+    return True
+
+
+def updateOne(item):
+    """
+    Helper method that may be run in parallel to update a single target.
+    """
+    (args, target) = item
+
+    with open(target, "r") as file:
+        data = json.load(file)
+
+    for endpointType in data['endpointTypes']:
+        for cluster in endpointType['clusters']:
+            if cluster['mfgCode'] is None and cluster['code'] == args.cluster_id:
+                for attribute in cluster['attributes']:
+                    if isClusterRevisionAttribute(attribute):
+                        if args.old_revision is None or attribute['defaultValue'] == args.old_revision:
+                            attribute['defaultValue'] = args.new_revision
+
+    with open(target, "w") as file:
+        json.dump(data, file)
+
+    # Now run convert.py on the file to have ZAP reformat it however it likes.
+    subprocess.check_call(['./scripts/tools/zap/convert.py', target])
+
+
+def main():
+    checkPythonVersion()
+
+    logging.basicConfig(
+        level=logging.INFO,
+        format='%(asctime)s %(name)s %(levelname)-7s %(message)s'
+    )
+
+    args = runArgumentsParser()
+
+    os.chdir(CHIP_ROOT_DIR)
+
+    targets = getTargets()
+
+    if args.dry_run:
+        for target in targets:
+            print(f"Will try to update: {target}")
+        sys.exit(0)
+
+    items = [(args, target) for target in targets]
+
+    if args.parallel:
+        # Ensure each zap run is independent
+        os.environ['ZAP_TEMPSTATE'] = '1'
+        with multiprocessing.Pool() as pool:
+            for _ in pool.imap_unordered(updateOne, items):
+                pass
+    else:
+        for item in items:
+            updateOne(item)
+
+
+if __name__ == '__main__':
+    main()

scripts/tools/zap_convert_all.py

@@ -105,7 +105,7 @@ def main():
                 pass
     else:
         for target in targets:
-            generateOne(target)
+            convertOne(target)
 
 
 if __name__ == '__main__':