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Re: [openstack-dev] Writing Plug-ins to Quantum

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On 10/31/2012 05:00 PM, Trinath Somanchi wrote:

Hi Stackers-
I'm testing a dummy plugin which does and RPC based communication with Quantum. 

I have done this following:

[1] I have written dummy agent like DHCP agent  - Present in HOST
[2] I have written dummy_rpc_base like the db/dhcp_rpc_base.py - Present in Controller [3] I have written an testing method to the db/db_base_plugin_v2.py - Present in Controller 

But when I restart the quantum-server, I get this error:
root@user-P2020Build:/usr/lib/python2.7/dist-packages/quantum/db# python /usr/bin/quantum-server -- --config-file /etc/quantum/quantum.conf --log-file /var/log/quantum/server.log --config-file /etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini 2012-10-31 14:20:30 DEBUG [quantum.service] ******************************************************************************** 2012-10-31 14:20:30 DEBUG [quantum.service] Configuration options gathered from config file: 2012-10-31 14:20:30 DEBUG [quantum.service] ================================================ 2012-10-31 14:20:30 DEBUG [quantum.service] allow_bulk True 2012-10-31 14:20:30 DEBUG [quantum.service] allow_overlapping_ips False 
2012-10-31 14:20:30    DEBUG [quantum.service] api_extensions_path
2012-10-31 14:20:30 DEBUG [quantum.service] api_paste_config /etc/quantum/api-paste.ini 2012-10-31 14:20:30 DEBUG [quantum.service] auth_strategy keystone 2012-10-31 14:20:30 DEBUG [quantum.service] base_mac fa:16:3e:00:00:00 2012-10-31 14:20:30 DEBUG [quantum.service] bind_host 0.0.0.0 2012-10-31 14:20:30 DEBUG [quantum.service] bind_port 9696 2012-10-31 14:20:30 DEBUG [quantum.service] config_dir None 2012-10-31 14:20:30 DEBUG [quantum.service] config_file ['/etc/quantum/quantum.conf'] 2012-10-31 14:20:30 DEBUG [quantum.service] core_plugin quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2 2012-10-31 14:20:30 DEBUG [quantum.service] debug True 2012-10-31 14:20:30 DEBUG [quantum.service] dhcp_lease_duration 120 2012-10-31 14:20:30 DEBUG [quantum.service] log_config None 2012-10-31 14:20:30 DEBUG [quantum.service] log_date_format %Y-%m-%d %H:%M:%S 2012-10-31 14:20:30 DEBUG [quantum.service] log_dir None 2012-10-31 14:20:30 DEBUG [quantum.service] log_file None 2012-10-31 14:20:30 DEBUG [quantum.service] log_format %(asctime)s %(levelname)8s [%(name)s] %(message)s 2012-10-31 14:20:30 DEBUG [quantum.service] mac_generation_retries 16 2012-10-31 14:20:30 DEBUG [quantum.service] max_dns_nameservers 5 2012-10-31 14:20:30 DEBUG [quantum.service] max_subnet_host_routes 20 2012-10-31 14:20:30 DEBUG [quantum.service] policy_file policy.json 2012-10-31 14:20:30 DEBUG [quantum.service] state_path . 2012-10-31 14:20:30 DEBUG [quantum.service] syslog_log_facility LOG_USER 2012-10-31 14:20:30 DEBUG [quantum.service] use_syslog False 2012-10-31 14:20:30 DEBUG [quantum.service] verbose True 2012-10-31 14:20:30 DEBUG [quantum.service] ******************************************************************************** 2012-10-31 14:20:30 INFO [quantum.common.config] Config paste file: /etc/quantum/api-paste.ini 2012-10-31 14:20:30 DEBUG [quantum.manager] Plugin location:quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2 2012-10-31 14:20:30 INFO [quantum.manager] Loading Plugin: quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2 
Traceback (most recent call last):
  File "/usr/bin/quantum-server", line 26, in <module>
    server()
File "/usr/lib/python2.7/dist-packages/quantum/server/__init__.py", line 40, in main 
    quantum_service = service.serve_wsgi(service.QuantumApiService)
File "/usr/lib/python2.7/dist-packages/quantum/service.py", line 83, in serve_wsgi 
    service.start()
File "/usr/lib/python2.7/dist-packages/quantum/service.py", line 42, in start 
    self.wsgi_app = _run_wsgi(self.app_name)
File "/usr/lib/python2.7/dist-packages/quantum/service.py", line 89, in _run_wsgi 
    app = config.load_paste_app(app_name)
File "/usr/lib/python2.7/dist-packages/quantum/common/config.py", line 133, in load_paste_app 
    app = deploy.loadapp("config:%s" % config_path, name=app_name)
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp 
    return loadobj(APP, uri, name=name, **kw)
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 272, in loadobj 
    return context.create()
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create 
    return self.object_type.invoke(self)
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke 
    **context.local_conf)
File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 59, in fix_call 
    reraise(*exc_info)
File "/usr/lib/python2.7/dist-packages/paste/deploy/compat.py", line 22, in reraise 
    exec('raise t, e, tb', dict(t=t, e=e, tb=tb))
File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 56, in fix_call 
    val = callable(*args, **kw)
File "/usr/lib/python2.7/dist-packages/paste/urlmap.py", line 25, in urlmap_factory 
    app = loader.get_app(app_name, global_conf=global_conf)
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app 
    name=name, global_conf=global_conf).create()
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create 
    return self.object_type.invoke(self)
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke 
    **context.local_conf)
File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 59, in fix_call 
    reraise(*exc_info)
File "/usr/lib/python2.7/dist-packages/paste/deploy/compat.py", line 22, in reraise 
    exec('raise t, e, tb', dict(t=t, e=e, tb=tb))
File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 56, in fix_call 
    val = callable(*args, **kw)
File "/usr/lib/python2.7/dist-packages/quantum/auth.py", line 61, in pipeline_factory 
    app = loader.get_app(pipeline[-1])
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app 
    name=name, global_conf=global_conf).create()
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create 
    return self.object_type.invoke(self)
File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 146, in invoke return fix_call(context.object, context.global_conf, **context.local_conf) File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 59, in fix_call 
    reraise(*exc_info)
File "/usr/lib/python2.7/dist-packages/paste/deploy/compat.py", line 22, in reraise 
    exec('raise t, e, tb', dict(t=t, e=e, tb=tb))
File "/usr/lib/python2.7/dist-packages/paste/deploy/util.py", line 56, in fix_call 
    val = callable(*args, **kw)
File "/usr/lib/python2.7/dist-packages/quantum/api/v2/router.py", line 67, in factory 
    return cls(**local_config)
File "/usr/lib/python2.7/dist-packages/quantum/api/v2/router.py", line 71, in __init__ 
    plugin = manager.QuantumManager.get_plugin()
File "/usr/lib/python2.7/dist-packages/quantum/manager.py", line 65, in get_plugin 
    cls._instance = cls()
File "/usr/lib/python2.7/dist-packages/quantum/manager.py", line 54, in __init__ 
    plugin_klass = importutils.import_class(plugin_provider)
File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/importutils.py", line 30, in import_class 
    __import__(mod_str)
File "/usr/lib/python2.7/dist-packages/quantum/plugins/openvswitch/ovs_quantum_plugin.py", line 33, in <module> 
    from quantum.db import l3_db
File "/usr/lib/python2.7/dist-packages/quantum/db/l3_db.py", line 86, in <module> 
    class L3_NAT_db_mixin(l3.RouterPluginBase):
File "/usr/lib/python2.7/dist-packages/quantum/db/l3_db.py", line 111, in L3_NAT_db_mixin 
    _network_filter_hook)
TypeError: unbound method register_model_query_hook() must be called with QuantumDbPluginV2 instance as first argument (got DeclarativeMeta instance instead) 

How to resolve this error?


I don't know what change you have done to the code, so cannot help a lot.

How can I register a new plugin/agent with the quantum?


quantum.conf define the plugin:
core_plugin = quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2 
You can point it to your plugin.
plugin agent is a peer for the plugin, that is running standalone.

Please help me in this regard.


--
Regards,
----------------------------------------------
Trinath Somanchi,
+91 9866 235 130



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