Persist NetworkDriverData.networks on disk

 lib/NetworkDriver.py

@@ -15,81 +15,10 @@
    return ''.join([random.choice(chars) for _ in range(size)])


@app.route('/NetworkDriver.GetCapabilities', methods=['POST'])
def GetCapabilities():
    return {
        'Scope': 'local',
        'ConnectivityScope': 'global',
    }


@app.route('/NetworkDriver.CreateNetwork', methods=['POST'])
def CreateNetwork():
    network = NetworkCreateEntity(**flask.request.get_json(force=True))
    try:
        for option, value in network.Options['com.docker.network.generic'].items():
            if option not in network.Options:
                network.Options[option] = value
    except KeyError:
        pass
    networks[network.NetworkID] = network
    return {}


@app.route('/NetworkDriver.DeleteNetwork', methods=['POST'])
def DeleteNetwork():
    network = NetworkDeleteEntity(**flask.request.get_json(force=True))
    del networks[network.NetworkID]
    return {}


@app.route('/NetworkDriver.CreateEndpoint', methods=['POST'])
def CreateEndpoint():
    endpoint = EndpointCreateEntity(**flask.request.get_json(force=True))

    endpoints['{}-{}'.format(endpoint.NetworkID, endpoint.EndpointID)] = endpoint
    return {
        'Interface': {
        }
    }


@app.route('/NetworkDriver.EndpointOperInfo', methods=['POST'])
def EndpointOperInfo():
    endpoint = EndpointOperInfoEntity(**flask.request.get_json(force=True))
    return {
        'Value': {
        }
    }


@app.route('/NetworkDriver.DeleteEndpoint', methods=['POST'])
def DeleteEndpoint():
    entity = EndpointDeleteEntity(**flask.request.get_json(force=True))
    endpoint = endpoints['{}-{}'.format(entity.NetworkID, entity.EndpointID)]

    try:
        with pyroute2.IPRoute() as ip:
            iface = ip.link_lookup(ifname=endpoint.Interface.Peer)[0]
            if iface:
                ip.link('del', index=iface)
        del endpoint.Interface.Name
        del endpoint.Interface.Peer
    except AttributeError:
        pass

    del endpoints['{}-{}'.format(endpoint.NetworkID, endpoint.EndpointID)]
    return {}


@app.route('/NetworkDriver.Join', methods=['POST'])
def Join():
    join = JoinEntity(**flask.request.get_json(force=True))
    network = networks[join.NetworkID]
    endpoint = endpoints['{}-{}'.format(join.NetworkID, join.EndpointID)]

def create_interface(endpoint, network) -> str:
    ifname0 = 'veth{}'.format(genid())
    ifname1 = 'veth{}'.format(genid())

    with pyroute2.IPRoute() as ip:
        ip.link('add', ifname=ifname0, peer=ifname1, kind='veth')
        idx = ip.link_lookup(ifname=ifname0)[0]
@@ -111,6 +40,76 @@
            print(ip.link("set", index=idx, master=id_parent))
        endpoint.Interface.Peer = ifname1

    return ifname0


@app.route('/NetworkDriver.GetCapabilities', methods=['POST'])
def GetCapabilities():
    return {
        'Scope': 'local',
        'ConnectivityScope': 'global',
    }


@app.route('/NetworkDriver.CreateNetwork', methods=['POST'])
def CreateNetwork():
    network = NetworkCreateEntity(**flask.request.get_json(force=True))
    try:
        for option, value in network.Options['com.docker.network.generic'].items():
            if option not in network.Options:
                network.Options[option] = value
    except KeyError:
        pass
    networks[network.NetworkID] = network
    networks_sync()
    return {}


@app.route('/NetworkDriver.DeleteNetwork', methods=['POST'])
def DeleteNetwork():
    network = NetworkDeleteEntity(**flask.request.get_json(force=True))
    if network.NetworkID in networks:
        del networks[network.NetworkID]
        networks_sync()
    return {}


@app.route('/NetworkDriver.CreateEndpoint', methods=['POST'])
def CreateEndpoint():
    endpoint = EndpointCreateEntity(**flask.request.get_json(force=True))
    endpoints['{}-{}'.format(endpoint.NetworkID, endpoint.EndpointID)] = endpoint
    return {
        'Interface': {
        }
    }


@app.route('/NetworkDriver.EndpointOperInfo', methods=['POST'])
def EndpointOperInfo():
    endpoint = EndpointOperInfoEntity(**flask.request.get_json(force=True))
    return {
        'Value': {
        }
    }


@app.route('/NetworkDriver.DeleteEndpoint', methods=['POST'])
def DeleteEndpoint():
    entity = EndpointDeleteEntity(**flask.request.get_json(force=True))
    endpoint_id = '{}-{}'.format(entity.NetworkID, entity.EndpointID)
    if endpoint_id in endpoints:
        del endpoints['{}-{}'.format(entity.NetworkID, entity.EndpointID)]
    return {}


@app.route('/NetworkDriver.Join', methods=['POST'])
def Join():
    join = JoinEntity(**flask.request.get_json(force=True))
    network = networks[join.NetworkID]
    endpoint = endpoints['{}-{}'.format(join.NetworkID, join.EndpointID)]

    interface = create_interface(endpoint, network)

    gw4 = None
    for net4 in network.IPv4:
        try:
@@ -128,7 +127,7 @@

    result = {
        'InterfaceName': {
            'SrcName': ifname0,
            'SrcName': interface,
            'DstPrefix': 'eth',
        },
    }
@@ -142,18 +141,6 @@
@app.route('/NetworkDriver.Leave', methods=['POST'])
def Leave():
    leave = LeaveEntity(**flask.request.get_json(force=True))
    endpoint = endpoints['{}-{}'.format(leave.NetworkID, leave.EndpointID)]

    try:
        with pyroute2.IPRoute() as ip:
            iface = ip.link_lookup(ifname=endpoint.Interface.Peer)[0]
            if iface:
                ip.link('del', index=iface)
        del endpoint.Interface.Name
        del endpoint.Interface.Peer
    except AttributeError:
        pass

    return {}



 lib/NetworkDriverData.py

@@ -1,6 +1,15 @@
import shelve
from typing import Dict

from docker_plugin_api.NetworkDriverEntities import NetworkCreateEntity, EndpointCreateEntity

networks : Dict[str, NetworkCreateEntity] = {}
endpoints : Dict[str, EndpointCreateEntity] = {}

networks_store = shelve.open('networks', writeback=True)
networks: Dict[str, NetworkCreateEntity] = networks_store


def networks_sync():
    networks_store.sync()


endpoints: Dict[str, EndpointCreateEntity] = {}