point2pointipam

Functional requirements

1. For the different test scenarios we need an endpoint, providing IPAM service in point 2 point mode - allocates pair of IP addresses in /32 subnets and provides static routes for them.
2. IPAM service is created on list of some IP subnets. Request can set some exclude IP prefixes for the allocated IP addresses.
3. IPAM service should be idempotent, so if we have allocated some IP addresses for the request and request type (p2p, subnet) hasn't changed, and allocated addresses are still not excluded by the excluded prefixes, we should return the same addresses for the same connection.

Implementation

ipamServer

It is a server chain element implementing point 2 point IPAM service.

conn, _ := ipam.NewServer("10.0.0.0/24").Request(ctx, &networkservice.NetworkServiceRequest{
    Connection: &networkservice.Connection{
        Context: &networkservice.Context{
            IpContext: &networkservice.IpContext{
                ExcludedPrefixes: []string{"10.0.0.1/32"}
            },
        },
    },
})
conn.GetConnection().GetContext().GetIpContext().GetDstIp()                    // <-- 10.0.0.0/32
conn.GetConnection().GetContext().GetIpContext().GetDstRoutes()[0].GetPrefix() // <-- 10.0.0.2/32
conn.GetConnection().GetContext().GetIpContext().GetSrcIp()                    // <-- 10.0.0.2/32
conn.GetConnection().GetContext().GetIpContext().GetSrcRoutes()[0].GetPrefix() // <-- 10.0.0.0/32