Re: [RFC net-next 3/4] ynl: add a sample python library

[Benjamin Poirier <benjamin.poirier@gmail.com>]

On 2022-08-10 19:23 -0700, Jakub Kicinski wrote:
> A very short and very incomplete generic python library.
> 
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
> ---
>  tools/net/ynl/samples/ynl.py | 342 +++++++++++++++++++++++++++++++++++
>  1 file changed, 342 insertions(+)
>  create mode 100644 tools/net/ynl/samples/ynl.py
> 
> diff --git a/tools/net/ynl/samples/ynl.py b/tools/net/ynl/samples/ynl.py
> new file mode 100644
> index 000000000000..59c178e063f1
> --- /dev/null
> +++ b/tools/net/ynl/samples/ynl.py
> @@ -0,0 +1,342 @@
[...]
> +class YnlFamily:
> +    def __init__(self, def_path, schema=None):
> +        with open(def_path, "r") as stream:
> +            self.yaml = yaml.safe_load(stream)
> +
> +        if schema:
> +            with open(os.path.dirname(os.path.dirname(file_name)) + '/schema.yaml', "r") as stream:
> +                schema = yaml.safe_load(stream)
> +
> +            jsonschema.validate(self.yaml, schema)
> +

The schema validation part was not working. I got it going with the
following changes. It then flags some problems in ethtool.yaml.

diff --git a/tools/net/ynl/samples/ethtool.py b/tools/net/ynl/samples/ethtool.py
index 63c8e29f8e5d..4c5a4629748d 100755
--- a/tools/net/ynl/samples/ethtool.py
+++ b/tools/net/ynl/samples/ethtool.py
@@ -14,7 +14,7 @@ def main():
     parser.add_argument('--ifindex', dest='ifindex', type=str)
     args = parser.parse_args()
 
-    ynl = YnlFamily(args.spec)
+    ynl = YnlFamily(args.spec, args.schema)
 
     if args.dev_name:
         channels = ynl.channels_get({'header': {'dev_name': args.dev_name}})
diff --git a/tools/net/ynl/samples/ynl.py b/tools/net/ynl/samples/ynl.py
index 59c178e063f1..35c894b0ec19 100644
--- a/tools/net/ynl/samples/ynl.py
+++ b/tools/net/ynl/samples/ynl.py
@@ -247,7 +247,7 @@ class YnlFamily:
             self.yaml = yaml.safe_load(stream)
 
         if schema:
-            with open(os.path.dirname(os.path.dirname(file_name)) + '/schema.yaml', "r") as stream:
+            with open(schema, "r") as stream:
                 schema = yaml.safe_load(stream)
 
             jsonschema.validate(self.yaml, schema)