Nova API allow DB index as the server_id parem

[lvmxh]

I read the nova API doc:
such as this API:
http://developer.openstack.org/api-ref-compute-v2.1.html#showServer

GET /v2.1/​{tenant_id}​/servers/​{server_id}​Show server details

Request parameters
Parameter Style Type Description
tenant_id URI csapi:UUID
The UUID of the tenant in a multi-tenancy cloud.

server_id URI csapi:UUID
The UUID of the server.

But I can get the server by DB index:

curl -s -H X-Auth-Token:6b8968eb38df47c6a09ac9aee81ea0c6 http://192.168.2.103:8774/v2.1/f5a8829cc14c4825a2728b273aa91aa1/servers/2
{
    "server": {
        "OS-DCF:diskConfig": "MANUAL",
        "OS-EXT-AZ:availability_zone": "nova",
        "OS-EXT-SRV-ATTR:host": "shaohe1",
        "OS-EXT-SRV-ATTR:hypervisor_hostname": "shaohe1",
        "OS-EXT-SRV-ATTR:instance_name": "instance-00000002",
        "OS-EXT-STS:power_state": 1,
        "OS-EXT-STS:task_state": "migrating",
        "OS-EXT-STS:vm_state": "error",
        "OS-SRV-USG:launched_at": "2015-12-18T07:41:00.000000",
        "OS-SRV-USG:terminated_at": null,
        ......
    }
}

and the code really allow it use DB index
https://github.com/openstack/nova/blob/master/nova/compute/api.py#L1939

[lvmxh (shaohef)]

And start a mail-list to discuss this issue.

Topic is:

[Nova][API] Does nova API allow the server_id parem as DB index?

[Atsushi SAKAI (sakaia)]

The discussion is in following thread.
http://lists.openstack.org/pipermail/openstack-dev/2016-February/086605.html

[Anne Gentle (annegentle)]

We need the EC2 API devs to let us know if this is required before documenting this capability, as it may be removed.

[Sean Dague (sdague)]

You can only get this if you've turned off a bunch of extensions. Because we have a related bug in Nova where we get a 500 error - https://bugs.launchpad.net/nova/+bug/1522536

[lvmxh (shaohef)]

@ sdague，

When I specify the DB index, I can get the instance info with 500 error.

such as:

curl -s -H X-Auth-Token:6b8968eb38df47c6a09ac9aee81ea0c6 http://192.168.2.103:8774/v2.1/f5a8829cc14c4825a2728b273aa91aa1/servers/2
{
    "server": {
        "OS-DCF:diskConfig": "MANUAL",
        "OS-EXT-AZ:availability_zone": "nova",
        "OS-EXT-SRV-ATTR:host": "shaohe1",
        "OS-EXT-SRV-ATTR:hypervisor_hostname": "shaohe1",
        "OS-EXT-SRV-ATTR:instance_name": "instance-00000002",
        "OS-EXT-STS:power_state": 1,
        "OS-EXT-STS:task_state": "migrating",
        "OS-EXT-STS:vm_state": "error",
        "OS-SRV-USG:launched_at": "2015-12-18T07:41:00.000000",
        "OS-SRV-USG:terminated_at": null,
        ......
    }
}

[lvmxh (shaohef)]

sorry:

When I specify the DB index, I can get the instance info without 500 error.