Increase original resource ID max length to 289 chars

Ceilometer formats Swift container resource IDs in the format
`<project ID>_<container name>`, where the project ID is 32 characters
and container names can be up to 256 characters long, resulting in a
resource ID with max length 289 characters.

To accommodate this, expand the `original_resource_id` column
to have a max length of 289 characters.

Author: Callum027

gnocchi/indexer/alembic/versions/94544ca86c7e_increase_original_resource_id_max_length.py

@@ -0,0 +1,45 @@
+# Copyright 2025 The Gnocchi Developers
+#
+#    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.
+#
+
+"""Increase original resource ID max length
+
+Revision ID: 94544ca86c7e
+Revises: 18fff4509e3e
+Create Date: 2025-01-15 22:12:53.822748
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '94544ca86c7e'
+down_revision = '18fff4509e3e'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.alter_column("resource", "original_resource_id",
+                    type_=sa.String(289),
+                    nullable=False,
+                    existing_type=sa.String(255),
+                    existing_nullable=False)
+    op.alter_column("resource_history", "original_resource_id",
+                    type_=sa.String(289),
+                    nullable=False,
+                    existing_type=sa.String(255),
+                    existing_nullable=False)

gnocchi/indexer/sqlalchemy_base.py

@@ -262,7 +262,7 @@ def type(cls):
     ended_at = sqlalchemy.Column(types.TimestampUTC)
     user_id = sqlalchemy.Column(sqlalchemy.String(255))
     project_id = sqlalchemy.Column(sqlalchemy.String(255))
-    original_resource_id = sqlalchemy.Column(sqlalchemy.String(255),
+    original_resource_id = sqlalchemy.Column(sqlalchemy.String(289),
                                              nullable=False)
 
 

gnocchi/tests/functional/gabbits/transformedids.yaml

@@ -163,13 +163,13 @@ tests:
                   archive_policy_name: medium
       status: 400
       response_strings:
-        - transformable resource id >255 max allowed characters for dictionary value
+        - transformable resource id >289 max allowed characters for dictionary value
 
     - name: post long non uuid resource id
       POST: $LAST_URL
       data:
-          # 255 char string
-          id: four score and seven years ago we the people of the United States of America i have a dream it is the courage to continue that counts four score and seven years ago we the people of the United States of America i have a dream it is the courage to continue
+          # 289 char string
+          id: four score and seven years ago we the people of the United States of America i have a dream it is the courage to continue that counts four score and seven years ago we the people of the United States of America i have a dream it is the courage to continue that counts our score and seven y
           user_id: 0fbb231484614b1a80131fc22f6afc9c
           project_id: f3d41b770cc14f0bb94a1d5be9c0e3ea
           metrics:

gnocchi/utils.py

@@ -49,13 +49,13 @@ def ResourceUUID(value, creator):
     try:
         return uuid.UUID(value)
     except ValueError:
-        if len(value) <= 255:
+        if len(value) <= 289:
             if creator is None:
                 creator = "\x00"
             return uuid.uuid5(RESOURCE_ID_NAMESPACE,
                               value + "\x00" + creator)
         raise ValueError(
-            'transformable resource id >255 max allowed characters')
+            'transformable resource id >289 max allowed characters')
 
 
 def UUID(value):

releasenotes/notes/original-resource-id-max-length-ced99a100f3e494d.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    The maximum length of the resource ID when creating new resources has been
+    increased from 255 to 289 characters. This extra length allows Gnocchi to
+    accommodate Swift container resources generated by Ceilometer with the
+    maximum container name length of 256 characters.