From 28522a59f34eddb808db650ab74bc3bf4337db0f Mon Sep 17 00:00:00 2001
From: Callum Dickinson <callum.dickinson.nz@gmail.com>
Date: Tue, 21 Jan 2025 14:53:50 +1300
Subject: [PATCH] Increase string attribute max length to 256 chars

Increase the maximum supported length for string type
resource attributes from 255 to 256 characters, to allow
creating string attributes on resources that accept values
of such length (e.g. Swift container names).
---
 gnocchi/resource_type.py                                    | 6 +++---
 gnocchi/tests/functional/gabbits/resource-type.yaml         | 4 ++--
 .../notes/string-attribute-max-length-33e037494a0e318c.yaml | 6 ++++++
 3 files changed, 11 insertions(+), 5 deletions(-)
 create mode 100644 releasenotes/notes/string-attribute-max-length-33e037494a0e318c.yaml

diff --git a/gnocchi/resource_type.py b/gnocchi/resource_type.py
index e46206ff7..203fa53d1 100644
--- a/gnocchi/resource_type.py
+++ b/gnocchi/resource_type.py
@@ -141,9 +141,9 @@ def __init__(self, min_length, max_length, *args, **kwargs):
 
     meta_schema_ext = {
         voluptuous.Required('min_length', default=0):
-        voluptuous.All(int, voluptuous.Range(min=0, max=255)),
-        voluptuous.Required('max_length', default=255):
-        voluptuous.All(int, voluptuous.Range(min=1, max=255))
+        voluptuous.All(int, voluptuous.Range(min=0, max=256)),
+        voluptuous.Required('max_length', default=256):
+        voluptuous.All(int, voluptuous.Range(min=1, max=256))
     }
 
     @property
diff --git a/gnocchi/tests/functional/gabbits/resource-type.yaml b/gnocchi/tests/functional/gabbits/resource-type.yaml
index b8eb0b47a..719665fd4 100644
--- a/gnocchi/tests/functional/gabbits/resource-type.yaml
+++ b/gnocchi/tests/functional/gabbits/resource-type.yaml
@@ -146,7 +146,7 @@ tests:
               foobar:
                   type: string
                   required: False
-                  max_length: 255
+                  max_length: 256
                   min_length: 0
               uuid:
                   type: uuid
@@ -200,7 +200,7 @@ tests:
                   type: string
                   required: False
                   min_length: 0
-                  max_length: 255
+                  max_length: 256
               uuid:
                   type: uuid
                   required: True
diff --git a/releasenotes/notes/string-attribute-max-length-33e037494a0e318c.yaml b/releasenotes/notes/string-attribute-max-length-33e037494a0e318c.yaml
new file mode 100644
index 000000000..50a966b7e
--- /dev/null
+++ b/releasenotes/notes/string-attribute-max-length-33e037494a0e318c.yaml
@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    The maximum allowed length for string-type resource attributes has been
+    increased from 255 to 256 characters. This allows creating attributes
+    that accept values up to 256 characters long e.g. Swift container names.