Pyang validation of ODL Yang schemas

[brfoster]

Can anyone help me here?  I'm seeing errors using pyang with the downloaded Yang schemas from ODL.  I'm running distribution-karaf-0.4.2-Beryllium-SR2.

I downloaded all the yang schema files from the server (http://localhost:8181/restconf/modules...)

I get errors on basically all of them.  For example,

[gibson@rickenbacker yang]$ pyang -f tree opendaylight-inventory

opendaylight-inventory:1: error: module "yang-ext" not found in search path

opendaylight-inventory:1: error: module "ietf-inet-types" not found in search path

opendaylight-inventory:1: warning: imported module yang-ext not used

opendaylight-inventory:21 (at opendaylight-inventory:18): warning: "mandatory" statement for a key leaf is ignored

opendaylight-inventory:21: error: no module with the namespace "urn:opendaylight:yang:extension:yang-ext" is imported

opendaylight-inventory:21 (at opendaylight-inventory:21): warning: "mandatory" statement for a key leaf is ignored

opendaylight-inventory:27: error: no module with the namespace "urn:opendaylight:yang:extension:yang-ext" is imported

opendaylight-inventory:27: warning: explicit config statement is ignored

opendaylight-inventory:33: error: no module with the namespace "urn:opendaylight:yang:extension:yang-ext" is imported

opendaylight-inventory:33: warning: explicit config statement is ignored

opendaylight-inventory:39: error: no module with the namespace "urn:opendaylight:yang:extension:yang-ext" is imported

opendaylight-inventory:39: warning: explicit config statement is ignored

opendaylight-inventory:45: error: no module with the namespace "urn:opendaylight:yang:extension:yang-ext" is imported

opendaylight-inventory:45: warning: explicit config statement is ignored

module: opendaylight-inventory

   x--rw nodes!

      +--rw node* [id]

         +--rw id                node-id

         +--rw node-connector* [id]

            +--rw id    node-connector-id

notifications:

   x---n node-removed

   |  +--ro node-ref?   node-ref

   x---n node-connector-removed

   |  +--ro node-connector-ref?   node-connector-ref

   x---n node-updated

   |  +--ro node-ref?         node-ref

   |  +--rw id?               node-id

   |  +--rw node-connector* [id]

   |     +--rw id    node-connector-id

   x---n node-connector-updated

      +--ro node-connector-ref?   node-connector-ref

      +--rw id?                   node-connector-id

However, "yang-ext" schema file is in the same directory with all the other files.  I see similar errors running other files.

Anyone have a suggestion?

[giheron]

hmmm - not sure.   I can do a "pyang -f tree opendaylight-inventory@2013-08-19.yang" in ODL's cache/schema directory.

how did you download the modules?

[brfoster]

I'm just downloading from the server with the URL for the schema like...

http://192.168.5.102:8181/restconf/modules/module/opendaylight-inventory/2013-08-19/schema

I can do it with the browser or wget or curl and I get the same result shown above.  Do the files get corrupted with that method?

[giheron]

ah ok.  So if you do that then the schemas are downloaded in YIN, not YANG (I'm not sure why).

so you need to convert each schema file using e.g. "pyang -f yang schema > yang-ext.yang"

let me know if that works