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Today, I will talk to you about how to obtain the number of available fixed_ip of network. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

Get the number of available fixed_ip of network-openstackE version

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Method 1: add the fixed_ip_count field directly to the bottom layer of nova:

Method 2: directly encapsulate the api from dashboard to the underlying layer:

Where api is published as follows:

The following are the details:

1. Dashboard page:

Dashboards/nova/zones_and_networks/views.py

Network_id = networks [0] ['id']

Count = api.nova.get_available_count_ips (self.request, network_id)

Api/nova.py

Def get_available_count_ips (request,network_id):

Return novaclient (request) networks.get_available_count_ips (network_id)

2. Novaclient layer

V1_1/networks.py

Def get_available_count_ips (self, network_id):

"

Get a specific flavor.

: param flavor: The ID of the: class: `Flavor` to get.

: rtype:: class: `Flavor`

"

Return self._list ("/ os-networks/get_available_count_ips/%s"% network_id, "count")

3. Nova layer

Api/openstack/compute/contrib/networks.py

Def get_available_count_ips (self, req, id):

Context = req.environ ['nova.context']

Authorize (context)

LOG.debug (_ ("Showing network_fixed_count with id s") id)

Try:

Count = self.network_api.get_available_count_ips (context, id)

Except exception.NetworkNotFound:

Raise exc.HTTPNotFound (_ (Network not found))

Return {'count': count}

Collection_actions = {'list_limit':' POST','get_available_count_ips': 'POST'}

Vi network/api.py

Def get_available_count_ips (self, context,network_id):

Return rpc.call (context

FLAGS.network_topic

{'method':' get_available_count_ips'

'args': {' network_id': network_id}})

Vi network/manager.py

@ wrap_check_policy

Def get_available_count_ips (self, context, network_id):

Count = db.network_available_count_ips (context, network_id)

Return count

Db/api.py

Def network_available_count_ips (context, network_id):

"Return the number of reserved ips in the network."

Return IMPL.network_available_count_ips (context, network_id)

Db/sqlalchemy/api.py

@ require_admin_context

Def network_available_count_ips (context, network_id):

Return _ network_ips_query (context, network_id).\

Filter_by (reserved=False).\

Filter_by (host='').\

Filter_by (instance_id='').\

Filter_by (allocated=False).\

Count ()

Note: be sure to follow the base.py to see how to pass parameters to _ list:

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