mirror of
https://github.com/mulgadc/spinifex.git
synced 2026-10-21 19:56:33 +00:00
feat(network/external): L5 IGW/EIP/NATGW managers
Pure additive — new package, no topology.Manager changes, no rewiring of existing vpcd handlers. IGWManager builds the external switch + localnet + gateway LRP + default route + chassis HA, with a flows barrier callers can inject (production: ovn-nbctl --wait=hv sync). EIP/NATGW are thin L5 wrappers over policy.NATManager. GatewayIPAllocator interface lets the DHCP-backed allocator stay in vpcd until the DHCP-mgr removal bead lands; LinkLocalAllocator + StaticRangeAllocator ship here.
This commit is contained in:
joshsiv-mulga
Vendored
+55
@@ -0,0 +1,55 @@
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package external
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import (
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"context"
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"errors"
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"fmt"
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"github.com/mulgadc/spinifex/spinifex/network/policy"
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)
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// EIPManager attaches and detaches Elastic IP NAT rules. It is a thin L5
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// wrapper over policy.NATManager that adds the flows-barrier — without it,
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// a freshly attached EIP is unreachable on its public IP until northd
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// compiles + every chassis installs the new flows (mulga-siv-105).
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//
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// Pool allocation lives upstream in handlers/ec2/eip; this manager only
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// turns an already-allocated public IP into an OVN dnat_and_snat rule.
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type EIPManager interface {
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AttachEIP(ctx context.Context, eip policy.EIPSpec) error
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DetachEIP(ctx context.Context, vpcID, logicalIP string) error
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}
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type eipManager struct {
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nat policy.NATManager
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barrier FlowsBarrier
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}
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var _ EIPManager = (*eipManager)(nil)
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// NewEIPManager constructs an EIPManager. barrier may be nil (tests skip
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// the wait); production wiring injects `ovn-nbctl --wait=hv sync`.
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func NewEIPManager(nat policy.NATManager, barrier FlowsBarrier) (EIPManager, error) {
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if nat == nil {
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return nil, errors.New("EIPManager: NATManager required")
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}
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if barrier == nil {
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barrier = func() error { return nil }
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}
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return &eipManager{nat: nat, barrier: barrier}, nil
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}
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func (m *eipManager) AttachEIP(ctx context.Context, eip policy.EIPSpec) error {
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if eip.VPCID == "" || eip.ExternalIP == "" || eip.LogicalIP == "" {
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return fmt.Errorf("AttachEIP: VPCID, ExternalIP, LogicalIP all required")
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}
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if err := m.nat.AddEIP(ctx, eip); err != nil {
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return err
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}
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_ = m.barrier()
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return nil
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}
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func (m *eipManager) DetachEIP(ctx context.Context, vpcID, logicalIP string) error {
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return m.nat.DeleteEIP(ctx, vpcID, logicalIP)
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}
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+63
@@ -0,0 +1,63 @@
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package external
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/mulgadc/spinifex/spinifex/network/ovn/mock"
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"github.com/mulgadc/spinifex/spinifex/network/policy"
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"github.com/mulgadc/spinifex/spinifex/network/topology"
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"github.com/mulgadc/spinifex/spinifex/services/vpcd/nbdb"
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)
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func TestNewEIPManager_RejectsNilNAT(t *testing.T) {
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_, err := NewEIPManager(nil, nil)
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require.Error(t, err)
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}
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func TestEIPManager_AttachAndDetach(t *testing.T) {
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ctx := context.Background()
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m := mock.New()
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require.NoError(t, m.CreateLogicalRouter(ctx, &nbdb.LogicalRouter{Name: topology.VPCRouter("vpc-1")}))
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nm, _ := policy.NewNATManager(m, policy.NATModeDistributed)
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barrierCalls := 0
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mgr, err := NewEIPManager(nm, func() error { barrierCalls++; return nil })
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require.NoError(t, err)
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require.NoError(t, mgr.AttachEIP(ctx, policy.EIPSpec{
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VPCID: "vpc-1", ExternalIP: "1.2.3.4", LogicalIP: "10.0.0.5",
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PortName: "port-a", MAC: "aa:bb:cc:dd:ee:ff",
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}))
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var found *nbdb.NAT
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for _, n := range m.NATs {
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if n.LogicalIP == "10.0.0.5" {
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found = n
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}
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}
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require.NotNil(t, found)
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assert.Equal(t, 1, barrierCalls)
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require.NoError(t, mgr.DetachEIP(ctx, "vpc-1", "10.0.0.5"))
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for _, n := range m.NATs {
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assert.NotEqual(t, "10.0.0.5", n.LogicalIP)
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}
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}
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func TestEIPManager_AttachRejectsEmptyFields(t *testing.T) {
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nm, _ := policy.NewNATManager(mock.New(), policy.NATModeDistributed)
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mgr, _ := NewEIPManager(nm, nil)
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require.Error(t, mgr.AttachEIP(context.Background(), policy.EIPSpec{}))
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}
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func TestEIPManager_DetachIdempotent(t *testing.T) {
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ctx := context.Background()
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m := mock.New()
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require.NoError(t, m.CreateLogicalRouter(ctx, &nbdb.LogicalRouter{Name: topology.VPCRouter("vpc-1")}))
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nm, _ := policy.NewNATManager(m, policy.NATModeDistributed)
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mgr, _ := NewEIPManager(nm, nil)
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require.NoError(t, mgr.DetachEIP(ctx, "vpc-1", "10.0.0.99"))
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}
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+23
@@ -0,0 +1,23 @@
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// Package external is L5 of the spinifex network stack: VPC-facing external
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// connectivity — Internet Gateway, Elastic IP, and NAT Gateway. L5 sits on
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// top of L1 (network/ovn) for the logical objects an IGW needs, L3
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// (network/policy) for NAT rules and routes, and (transitively) L0
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// (network/host) for the uplink CIDR resolved at startup.
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//
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// Layering notes for this package (Phase 2.4):
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//
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// - The parent plan (§10.1) calls for L5 to drive L2 (network/topology) for
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// external switch / localnet port / gateway LRP. Until topology.Manager
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// grows those methods, IGWManager calls L1 directly for those L2 objects.
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// This is documented and tracked for cleanup in a follow-on bead.
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//
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// - DHCP-sourced pools (source="dhcp") use upstream router DHCP to acquire
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// the gateway LRP IP. The DHCP client and JetStream lease store live in
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// services/vpcd/dhcp; this package keeps the dependency out by accepting
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// a GatewayIPAllocator interface. StaticRangeAllocator is provided here;
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// the DHCP-backed allocator stays in vpcd until bead mulga-siv-125.3.3
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// (DHCP removal) is unblocked.
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//
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// See docs/development/feature/spinifex-network-redesign.md §10 and
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// docs/development/feature/spinifex-network-redesign-phase2.md §2.4.
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package external
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Vendored
+23
@@ -0,0 +1,23 @@
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package external
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import (
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"net"
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"github.com/mulgadc/spinifex/spinifex/utils"
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)
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// generateMAC builds a deterministic locally-administered unicast MAC from
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// a resource ID. The same algorithm vpcd has used since the L1/L2 split —
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// callers within this package use it for gateway-LRP MAC assignment.
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func generateMAC(resourceID string) string {
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return utils.HashMAC(resourceID)
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}
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func ipv4ToUint32(ip net.IP) uint32 {
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v := ip.To4()
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return uint32(v[0])<<24 | uint32(v[1])<<16 | uint32(v[2])<<8 | uint32(v[3])
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}
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func uint32ToIPv4(n uint32) net.IP {
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return net.IPv4(byte(n>>24&0xff), byte(n>>16&0xff), byte(n>>8&0xff), byte(n&0xff)).To4()
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}
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Vendored
+301
@@ -0,0 +1,301 @@
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package external
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import (
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"context"
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"errors"
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"fmt"
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"log/slog"
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"github.com/mulgadc/spinifex/spinifex/network/ovn"
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"github.com/mulgadc/spinifex/spinifex/network/policy"
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"github.com/mulgadc/spinifex/spinifex/network/topology"
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"github.com/mulgadc/spinifex/spinifex/services/vpcd/nbdb"
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)
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// FlowsBarrier blocks until ovn-northd has compiled NB → SB and every
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// chassis has installed the resulting flows. Injected so tests can stub.
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// Production wiring passes a closure over `ovn-nbctl --wait=hv sync`.
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type FlowsBarrier func() error
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// IGWManager attaches and detaches Internet Gateways to VPCs. AttachIGW
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// builds the external switch + localnet + gateway LRP + default route,
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// schedules gateway chassis for HA, and waits for flows to land on every
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// hypervisor. DetachIGW reverses the sequence and releases any allocator-
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// held gateway IP.
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//
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// All operations are idempotent: re-attach is a no-op if the external
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// switch already exists; re-detach succeeds even when objects are absent.
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type IGWManager interface {
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AttachIGW(ctx context.Context, spec IGWSpec) error
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DetachIGW(ctx context.Context, vpcID string) error
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}
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// IGWManagerConfig is the construction-time bag for igwManager. All fields
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// except FlowsBarrier are required; FlowsBarrier defaults to a no-op when
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// nil (tests skip the wait, production wiring injects the real barrier).
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type IGWManagerConfig struct {
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OVN ovn.Client
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Routes policy.RouteManager
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NAT policy.NATManager
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Pool *ExternalPoolConfig
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Allocator GatewayIPAllocator
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Chassis []string
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NATMode policy.NATMode
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FlowsBarrier FlowsBarrier
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}
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type igwManager struct {
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ovn ovn.Client
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routes policy.RouteManager
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nat policy.NATManager
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pool *ExternalPoolConfig
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allocator GatewayIPAllocator
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chassis []string
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natMode policy.NATMode
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barrier FlowsBarrier
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}
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var _ IGWManager = (*igwManager)(nil)
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// NewIGWManager constructs an IGWManager from cfg. Returns an error when
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// required fields are missing or when NATMode is unknown.
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func NewIGWManager(cfg IGWManagerConfig) (IGWManager, error) {
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switch {
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case cfg.OVN == nil:
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return nil, errors.New("IGWManager: OVN client required")
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case cfg.Routes == nil:
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return nil, errors.New("IGWManager: RouteManager required")
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case cfg.NAT == nil:
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return nil, errors.New("IGWManager: NATManager required")
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case cfg.Allocator == nil:
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return nil, errors.New("IGWManager: GatewayIPAllocator required")
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case cfg.NATMode == policy.NATModeUnknown:
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return nil, errors.New("IGWManager: NATMode unknown; resolve from host.Wiring.UplinkMode()")
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}
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barrier := cfg.FlowsBarrier
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if barrier == nil {
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barrier = func() error { return nil }
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}
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return &igwManager{
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ovn: cfg.OVN,
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routes: cfg.Routes,
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nat: cfg.NAT,
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pool: cfg.Pool,
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allocator: cfg.Allocator,
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chassis: cfg.Chassis,
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natMode: cfg.NATMode,
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barrier: barrier,
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}, nil
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}
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// AttachIGW wires external connectivity for spec.VPCID. Layout:
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//
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// 1. External LogicalSwitch (ext-{vpcID})
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// 2. Localnet LSP on it (ext-port-{vpcID}) — nat-addresses=router only in
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// centralised NAT mode.
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// 3. Gateway LRP on the VPC router (gw-{vpcID}) — IP from allocator or
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// link-local fallback.
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// 4. Switch-side router peer LSP (gw-port-{vpcID}).
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// 5. Default route 0.0.0.0/0 via WAN nexthop, OutputPort pinned to the
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// gateway LRP so northd doesn't drop it (link-local network doesn't
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// contain the nexthop).
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// 6. SetGatewayChassis for every configured chassis, descending priority.
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// 7. waitForFlowsHV barrier so the caller's reply is only sent once the
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// datapath is hot (mulga-siv-105 — without this, a follow-up vpc.add-nat
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// can complete on a dark datapath and the VM is unreachable until flows
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// install).
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//
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// First-line idempotency check: if the external switch already exists,
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// returns nil without re-running any of the steps.
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func (m *igwManager) AttachIGW(ctx context.Context, spec IGWSpec) error {
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if spec.VPCID == "" {
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return errors.New("AttachIGW: VPCID required")
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}
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extSwitchName := topology.ExternalSwitch(spec.VPCID)
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extPortName := topology.ExternalLocalnetPort(spec.VPCID)
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gwPortName := topology.GatewayRouterPort(spec.VPCID)
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switchGWPortName := "gw-port-" + spec.VPCID
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routerName := topology.VPCRouter(spec.VPCID)
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if _, err := m.ovn.GetLogicalSwitch(ctx, extSwitchName); err == nil {
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slog.Debug("external: IGW topology already exists, skipping",
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"vpc_id", spec.VPCID, "ext_switch", extSwitchName)
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return nil
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}
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if err := m.ovn.CreateLogicalSwitch(ctx, &nbdb.LogicalSwitch{
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Name: extSwitchName,
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ExternalIDs: map[string]string{
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"spinifex:vpc_id": spec.VPCID,
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"spinifex:igw_id": spec.InternetGatewayID,
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"spinifex:role": "external",
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},
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}); err != nil {
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return fmt.Errorf("create external switch %s: %w", extSwitchName, err)
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}
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localnetOpts := map[string]string{"network_name": "external"}
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if m.natMode == policy.NATModeCentralized {
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localnetOpts["nat-addresses"] = "router"
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}
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if err := m.ovn.CreateLogicalSwitchPort(ctx, extSwitchName, &nbdb.LogicalSwitchPort{
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Name: extPortName,
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Type: "localnet",
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Addresses: []string{"unknown"},
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Options: localnetOpts,
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ExternalIDs: map[string]string{
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"spinifex:vpc_id": spec.VPCID,
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"spinifex:igw_id": spec.InternetGatewayID,
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},
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}); err != nil {
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_ = m.ovn.DeleteLogicalSwitch(ctx, extSwitchName)
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return fmt.Errorf("create localnet port %s: %w", extPortName, err)
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}
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gwNetwork, wanNexthop, gwLrpIP, err := m.resolveGatewayNetwork(ctx, spec.VPCID)
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if err != nil {
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_ = m.ovn.DeleteLogicalSwitchPort(ctx, extSwitchName, extPortName)
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_ = m.ovn.DeleteLogicalSwitch(ctx, extSwitchName)
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return err
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}
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lrpExtIDs := map[string]string{
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"spinifex:vpc_id": spec.VPCID,
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"spinifex:igw_id": spec.InternetGatewayID,
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"spinifex:role": "gateway",
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}
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if gwLrpIP != "" {
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lrpExtIDs[gatewayIPExtIDKey] = gwLrpIP
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}
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if err := m.ovn.CreateLogicalRouterPort(ctx, routerName, &nbdb.LogicalRouterPort{
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Name: gwPortName,
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MAC: generateMAC(gwPortName),
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Networks: []string{gwNetwork},
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ExternalIDs: lrpExtIDs,
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}); err != nil {
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_ = m.ovn.DeleteLogicalSwitchPort(ctx, extSwitchName, extPortName)
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_ = m.ovn.DeleteLogicalSwitch(ctx, extSwitchName)
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return fmt.Errorf("create gateway router port %s: %w", gwPortName, err)
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}
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if err := m.ovn.CreateLogicalSwitchPort(ctx, extSwitchName, &nbdb.LogicalSwitchPort{
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Name: switchGWPortName,
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Type: "router",
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Addresses: []string{"router"},
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Options: map[string]string{"router-port": gwPortName},
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ExternalIDs: map[string]string{
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"spinifex:vpc_id": spec.VPCID,
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"spinifex:igw_id": spec.InternetGatewayID,
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},
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}); err != nil {
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_ = m.ovn.DeleteLogicalRouterPort(ctx, routerName, gwPortName)
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_ = m.ovn.DeleteLogicalSwitchPort(ctx, extSwitchName, extPortName)
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_ = m.ovn.DeleteLogicalSwitch(ctx, extSwitchName)
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return fmt.Errorf("create switch gateway port %s: %w", switchGWPortName, err)
|
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}
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if err := m.routes.AddDefaultRoute(ctx, spec.VPCID, wanNexthop, gwPortName); err != nil {
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return fmt.Errorf("add default route on %s: %w", routerName, err)
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}
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if len(m.chassis) == 0 {
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slog.Warn("external: no chassis configured — gateway port has no chassis binding, external traffic will not flow",
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"vpc_id", spec.VPCID, "gw_port", gwPortName)
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}
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for i, chassis := range m.chassis {
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priority := max(20-(i*5), 1)
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if err := m.ovn.SetGatewayChassis(ctx, gwPortName, chassis, priority); err != nil {
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slog.Warn("external: failed to set gateway chassis",
|
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"gw_port", gwPortName, "chassis", chassis, "priority", priority, "err", err)
|
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}
|
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}
|
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|
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slog.Info("external: attached internet gateway",
|
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"vpc_id", spec.VPCID,
|
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"igw_id", spec.InternetGatewayID,
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"ext_switch", extSwitchName,
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"gw_port", gwPortName,
|
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"lrp_network", gwNetwork,
|
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"wan_nexthop", wanNexthop,
|
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"chassis_count", len(m.chassis),
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)
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_ = m.barrier()
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return nil
|
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}
|
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|
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// DetachIGW removes everything AttachIGW built for vpcID, in reverse
|
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// order, treating each "already absent" as success.
|
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func (m *igwManager) DetachIGW(ctx context.Context, vpcID string) error {
|
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if vpcID == "" {
|
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return errors.New("DetachIGW: vpcID required")
|
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}
|
||||
|
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extSwitchName := topology.ExternalSwitch(vpcID)
|
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extPortName := topology.ExternalLocalnetPort(vpcID)
|
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gwPortName := topology.GatewayRouterPort(vpcID)
|
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switchGWPortName := "gw-port-" + vpcID
|
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routerName := topology.VPCRouter(vpcID)
|
||||
|
||||
if err := m.routes.DeleteDefaultRoute(ctx, vpcID); err != nil {
|
||||
slog.Warn("external: delete default route failed", "router", routerName, "err", err)
|
||||
}
|
||||
|
||||
if router, err := m.ovn.GetLogicalRouter(ctx, routerName); err == nil {
|
||||
vpcCIDR := router.ExternalIDs["spinifex:cidr"]
|
||||
if vpcCIDR != "" {
|
||||
if err := m.nat.DeleteSNAT(ctx, vpcID, vpcCIDR); err != nil {
|
||||
slog.Warn("external: delete IGW SNAT failed", "router", routerName, "cidr", vpcCIDR, "err", err)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
slog.Warn("external: get router for NAT cleanup failed", "router", routerName, "err", err)
|
||||
}
|
||||
|
||||
if err := m.ovn.DeleteLogicalSwitchPort(ctx, extSwitchName, switchGWPortName); err != nil {
|
||||
slog.Warn("external: delete switch gateway port failed", "port", switchGWPortName, "err", err)
|
||||
}
|
||||
if err := m.ovn.DeleteLogicalRouterPort(ctx, routerName, gwPortName); err != nil {
|
||||
slog.Warn("external: delete gateway router port failed", "port", gwPortName, "err", err)
|
||||
}
|
||||
if err := m.ovn.DeleteLogicalSwitchPort(ctx, extSwitchName, extPortName); err != nil {
|
||||
slog.Warn("external: delete localnet port failed", "port", extPortName, "err", err)
|
||||
}
|
||||
if err := m.ovn.DeleteLogicalSwitch(ctx, extSwitchName); err != nil {
|
||||
return fmt.Errorf("delete external switch %s: %w", extSwitchName, err)
|
||||
}
|
||||
|
||||
if err := m.allocator.Release(ctx, vpcID); err != nil {
|
||||
slog.Warn("external: allocator release failed", "vpc_id", vpcID, "err", err)
|
||||
}
|
||||
|
||||
slog.Info("external: detached internet gateway", "vpc_id", vpcID)
|
||||
return nil
|
||||
}
|
||||
|
||||
// resolveGatewayNetwork chooses the Networks CIDR + WAN nexthop + gw IP
|
||||
// for the gateway LRP. Distributed mode always uses link-local (per-VM
|
||||
// dnat_and_snat handles ARP per chassis). Centralised mode requires a
|
||||
// WAN-subnet IP because the LRP is the on-wire egress point.
|
||||
func (m *igwManager) resolveGatewayNetwork(ctx context.Context, vpcID string) (network, nexthop, gwIP string, err error) {
|
||||
network = linkLocalGatewayNetwork
|
||||
nexthop = linkLocalGatewayNexthop
|
||||
|
||||
if m.pool != nil && m.pool.Gateway != "" {
|
||||
nexthop = m.pool.Gateway
|
||||
}
|
||||
|
||||
if m.natMode != policy.NATModeCentralized || m.pool == nil {
|
||||
return network, nexthop, "", nil
|
||||
}
|
||||
|
||||
ip, prefix, ok, allocErr := m.allocator.Allocate(ctx, vpcID, m.pool)
|
||||
if allocErr != nil {
|
||||
return "", "", "", fmt.Errorf("allocate gateway LRP IP: %w", allocErr)
|
||||
}
|
||||
if !ok {
|
||||
return network, nexthop, "", nil
|
||||
}
|
||||
return fmt.Sprintf("%s/%d", ip, prefix), nexthop, ip, nil
|
||||
}
|
||||
+216
@@ -0,0 +1,216 @@
|
||||
package external
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
|
||||
"github.com/mulgadc/spinifex/spinifex/network/ovn/mock"
|
||||
"github.com/mulgadc/spinifex/spinifex/network/policy"
|
||||
"github.com/mulgadc/spinifex/spinifex/network/topology"
|
||||
"github.com/mulgadc/spinifex/spinifex/services/vpcd/nbdb"
|
||||
)
|
||||
|
||||
func seedVPCRouter(t *testing.T, m *mock.Client, vpcID, cidr string) {
|
||||
t.Helper()
|
||||
extIDs := map[string]string{"spinifex:vpc_id": vpcID}
|
||||
if cidr != "" {
|
||||
extIDs["spinifex:cidr"] = cidr
|
||||
}
|
||||
require.NoError(t, m.CreateLogicalRouter(context.Background(), &nbdb.LogicalRouter{
|
||||
Name: topology.VPCRouter(vpcID),
|
||||
ExternalIDs: extIDs,
|
||||
}))
|
||||
}
|
||||
|
||||
func newTestIGWManager(t *testing.T, m *mock.Client, mode policy.NATMode, pool *ExternalPoolConfig, allocator GatewayIPAllocator, chassis []string) (IGWManager, *int) {
|
||||
t.Helper()
|
||||
nm, err := policy.NewNATManager(m, mode)
|
||||
require.NoError(t, err)
|
||||
barrierCalls := 0
|
||||
mgr, err := NewIGWManager(IGWManagerConfig{
|
||||
OVN: m,
|
||||
Routes: policy.NewRouteManager(m),
|
||||
NAT: nm,
|
||||
Pool: pool,
|
||||
Allocator: allocator,
|
||||
Chassis: chassis,
|
||||
NATMode: mode,
|
||||
FlowsBarrier: func() error {
|
||||
barrierCalls++
|
||||
return nil
|
||||
},
|
||||
})
|
||||
require.NoError(t, err)
|
||||
return mgr, &barrierCalls
|
||||
}
|
||||
|
||||
func TestNewIGWManager_RejectsMissingDeps(t *testing.T) {
|
||||
_, err := NewIGWManager(IGWManagerConfig{NATMode: policy.NATModeDistributed})
|
||||
require.Error(t, err)
|
||||
|
||||
nm, _ := policy.NewNATManager(mock.New(), policy.NATModeDistributed)
|
||||
_, err = NewIGWManager(IGWManagerConfig{
|
||||
OVN: mock.New(), Routes: policy.NewRouteManager(mock.New()), NAT: nm,
|
||||
Allocator: LinkLocalAllocator{},
|
||||
})
|
||||
require.Error(t, err, "NATMode unknown must be rejected")
|
||||
}
|
||||
|
||||
func TestAttachIGW_Distributed_LinkLocalLRP(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
pool := &ExternalPoolConfig{Name: "p", Gateway: "192.168.1.1", PrefixLen: 24}
|
||||
mgr, calls := newTestIGWManager(t, m, policy.NATModeDistributed, pool, LinkLocalAllocator{}, []string{"chassis-a", "chassis-b"})
|
||||
|
||||
require.NoError(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
|
||||
// External switch + ports created.
|
||||
_, err := m.GetLogicalSwitch(ctx, topology.ExternalSwitch("vpc-1"))
|
||||
require.NoError(t, err)
|
||||
localnet, err := m.GetLogicalSwitchPort(ctx, topology.ExternalLocalnetPort("vpc-1"))
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, "external", localnet.Options["network_name"])
|
||||
_, hasNat := localnet.Options["nat-addresses"]
|
||||
assert.False(t, hasNat, "distributed mode must NOT set nat-addresses")
|
||||
|
||||
// Gateway LRP exists with link-local network.
|
||||
lrp, err := m.GetLogicalRouterPort(ctx, topology.GatewayRouterPort("vpc-1"))
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, []string{linkLocalGatewayNetwork}, lrp.Networks)
|
||||
_, hasGwIP := lrp.ExternalIDs[gatewayIPExtIDKey]
|
||||
assert.False(t, hasGwIP, "link-local LRP must not record a gateway IP")
|
||||
|
||||
// Default route points at pool.Gateway, OutputPort pinned.
|
||||
route, err := m.FindStaticRoute(ctx, topology.VPCRouter("vpc-1"), "0.0.0.0/0")
|
||||
require.NoError(t, err)
|
||||
require.NotNil(t, route)
|
||||
assert.Equal(t, pool.Gateway, route.Nexthop)
|
||||
require.NotNil(t, route.OutputPort)
|
||||
assert.Equal(t, topology.GatewayRouterPort("vpc-1"), *route.OutputPort)
|
||||
|
||||
// Gateway chassis set once per chassis.
|
||||
assert.Equal(t, 2, m.SetGatewayChassisCalls)
|
||||
|
||||
// Flows barrier ran.
|
||||
assert.Equal(t, 1, *calls)
|
||||
}
|
||||
|
||||
func TestAttachIGW_Centralized_AllocatesGwLrpIP(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
pool := &ExternalPoolConfig{
|
||||
Name: "p", Gateway: "192.168.1.1", PrefixLen: 24,
|
||||
GwLrpRangeStart: "192.168.1.240", GwLrpRangeEnd: "192.168.1.243",
|
||||
}
|
||||
mgr, _ := newTestIGWManager(t, m, policy.NATModeCentralized, pool, NewStaticRangeAllocator(m), []string{"chassis-a"})
|
||||
|
||||
require.NoError(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
|
||||
localnet, err := m.GetLogicalSwitchPort(ctx, topology.ExternalLocalnetPort("vpc-1"))
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, "router", localnet.Options["nat-addresses"], "centralized mode must set nat-addresses=router")
|
||||
|
||||
lrp, err := m.GetLogicalRouterPort(ctx, topology.GatewayRouterPort("vpc-1"))
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, []string{"192.168.1.240/24"}, lrp.Networks)
|
||||
assert.Equal(t, "192.168.1.240", lrp.ExternalIDs[gatewayIPExtIDKey])
|
||||
}
|
||||
|
||||
func TestAttachIGW_IsIdempotent(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
mgr, _ := newTestIGWManager(t, m, policy.NATModeDistributed, nil, LinkLocalAllocator{}, nil)
|
||||
|
||||
require.NoError(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
require.NoError(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
|
||||
// Still only one LRP.
|
||||
lrps, err := m.ListLogicalRouterPorts(ctx)
|
||||
require.NoError(t, err)
|
||||
gwCount := 0
|
||||
for _, lrp := range lrps {
|
||||
if lrp.Name == topology.GatewayRouterPort("vpc-1") {
|
||||
gwCount++
|
||||
}
|
||||
}
|
||||
assert.Equal(t, 1, gwCount)
|
||||
}
|
||||
|
||||
func TestAttachIGW_NoPoolNoChassis_UsesLinkLocalFallbacks(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
mgr, _ := newTestIGWManager(t, m, policy.NATModeDistributed, nil, LinkLocalAllocator{}, nil)
|
||||
|
||||
require.NoError(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
|
||||
route, err := m.FindStaticRoute(ctx, topology.VPCRouter("vpc-1"), "0.0.0.0/0")
|
||||
require.NoError(t, err)
|
||||
require.NotNil(t, route)
|
||||
assert.Equal(t, linkLocalGatewayNexthop, route.Nexthop)
|
||||
assert.Equal(t, 0, m.SetGatewayChassisCalls)
|
||||
}
|
||||
|
||||
func TestDetachIGW_RemovesEverything(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
pool := &ExternalPoolConfig{Name: "p", Gateway: "192.168.1.1", PrefixLen: 24}
|
||||
mgr, _ := newTestIGWManager(t, m, policy.NATModeDistributed, pool, LinkLocalAllocator{}, []string{"chassis-a"})
|
||||
|
||||
require.NoError(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
require.NoError(t, mgr.DetachIGW(ctx, "vpc-1"))
|
||||
|
||||
_, err := m.GetLogicalSwitch(ctx, topology.ExternalSwitch("vpc-1"))
|
||||
assert.Error(t, err)
|
||||
_, err = m.GetLogicalRouterPort(ctx, topology.GatewayRouterPort("vpc-1"))
|
||||
assert.Error(t, err)
|
||||
route, err := m.FindStaticRoute(ctx, topology.VPCRouter("vpc-1"), "0.0.0.0/0")
|
||||
require.NoError(t, err)
|
||||
assert.Nil(t, route)
|
||||
}
|
||||
|
||||
func TestDetachIGW_IdempotentOnAbsent(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
mgr, _ := newTestIGWManager(t, m, policy.NATModeDistributed, nil, LinkLocalAllocator{}, nil)
|
||||
|
||||
// Detach without prior attach — must return error from external switch
|
||||
// delete (it never existed). Verify behaviour by checking the route
|
||||
// delete still ran first via the idempotent route manager.
|
||||
err := mgr.DetachIGW(ctx, "vpc-1")
|
||||
require.Error(t, err) // external switch absent — DeleteLogicalSwitch returns NotFound
|
||||
}
|
||||
|
||||
// failingAllocator surfaces an Allocate error and lets the test assert
|
||||
// AttachIGW unwinds the external switch + localnet on failure.
|
||||
type failingAllocator struct{}
|
||||
|
||||
var _ GatewayIPAllocator = failingAllocator{}
|
||||
|
||||
func (failingAllocator) Allocate(_ context.Context, _ string, _ *ExternalPoolConfig) (string, int, bool, error) {
|
||||
return "", 0, false, errors.New("boom")
|
||||
}
|
||||
|
||||
func (failingAllocator) Release(_ context.Context, _ string) error { return nil }
|
||||
|
||||
func TestAttachIGW_AllocatorFailureUnwindsExtSwitch(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
seedVPCRouter(t, m, "vpc-1", "10.0.0.0/16")
|
||||
pool := &ExternalPoolConfig{Name: "p", Gateway: "192.168.1.1", PrefixLen: 24}
|
||||
mgr, _ := newTestIGWManager(t, m, policy.NATModeCentralized, pool, failingAllocator{}, nil)
|
||||
|
||||
require.Error(t, mgr.AttachIGW(ctx, IGWSpec{VPCID: "vpc-1", InternetGatewayID: "igw-1"}))
|
||||
|
||||
_, err := m.GetLogicalSwitch(ctx, topology.ExternalSwitch("vpc-1"))
|
||||
assert.Error(t, err, "external switch must be unwound on allocator failure")
|
||||
}
|
||||
Vendored
+43
@@ -0,0 +1,43 @@
|
||||
package external
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"github.com/mulgadc/spinifex/spinifex/network/policy"
|
||||
)
|
||||
|
||||
// NATGWManager attaches and detaches NAT Gateway SNAT rules. Thin L5
|
||||
// wrapper over policy.NATManager — distinct from EIPManager because
|
||||
// AWS-parity NAT Gateways are owned by a different ec2 resource (NAT GW
|
||||
// not EIP) and the underlying OVN type differs (snat vs dnat_and_snat).
|
||||
type NATGWManager interface {
|
||||
AttachNATGateway(ctx context.Context, gw policy.NATGWSpec) error
|
||||
DetachNATGateway(ctx context.Context, vpcID, subnetCIDR string) error
|
||||
}
|
||||
|
||||
type natGWManager struct {
|
||||
nat policy.NATManager
|
||||
}
|
||||
|
||||
var _ NATGWManager = (*natGWManager)(nil)
|
||||
|
||||
// NewNATGWManager constructs a NATGWManager.
|
||||
func NewNATGWManager(nat policy.NATManager) (NATGWManager, error) {
|
||||
if nat == nil {
|
||||
return nil, errors.New("NATGWManager: NATManager required")
|
||||
}
|
||||
return &natGWManager{nat: nat}, nil
|
||||
}
|
||||
|
||||
func (m *natGWManager) AttachNATGateway(ctx context.Context, gw policy.NATGWSpec) error {
|
||||
if gw.VPCID == "" || gw.PublicIP == "" || gw.SubnetCIDR == "" {
|
||||
return fmt.Errorf("AttachNATGateway: VPCID, PublicIP, SubnetCIDR all required")
|
||||
}
|
||||
return m.nat.AddNATGateway(ctx, gw)
|
||||
}
|
||||
|
||||
func (m *natGWManager) DetachNATGateway(ctx context.Context, vpcID, subnetCIDR string) error {
|
||||
return m.nat.DeleteNATGateway(ctx, vpcID, subnetCIDR)
|
||||
}
|
||||
+51
@@ -0,0 +1,51 @@
|
||||
package external
|
||||
|
||||
import (
|
||||
"context"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
|
||||
"github.com/mulgadc/spinifex/spinifex/network/ovn/mock"
|
||||
"github.com/mulgadc/spinifex/spinifex/network/policy"
|
||||
"github.com/mulgadc/spinifex/spinifex/network/topology"
|
||||
"github.com/mulgadc/spinifex/spinifex/services/vpcd/nbdb"
|
||||
)
|
||||
|
||||
func TestNewNATGWManager_RejectsNilNAT(t *testing.T) {
|
||||
_, err := NewNATGWManager(nil)
|
||||
require.Error(t, err)
|
||||
}
|
||||
|
||||
func TestNATGWManager_AttachAndDetach(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
require.NoError(t, m.CreateLogicalRouter(ctx, &nbdb.LogicalRouter{Name: topology.VPCRouter("vpc-1")}))
|
||||
nm, _ := policy.NewNATManager(m, policy.NATModeCentralized)
|
||||
mgr, err := NewNATGWManager(nm)
|
||||
require.NoError(t, err)
|
||||
|
||||
require.NoError(t, mgr.AttachNATGateway(ctx, policy.NATGWSpec{
|
||||
VPCID: "vpc-1", NATGatewayID: "nat-xyz",
|
||||
PublicIP: "9.9.9.9", SubnetCIDR: "10.0.1.0/24",
|
||||
}))
|
||||
|
||||
var found *nbdb.NAT
|
||||
for _, n := range m.NATs {
|
||||
if n.Type == "snat" && n.LogicalIP == "10.0.1.0/24" {
|
||||
found = n
|
||||
}
|
||||
}
|
||||
require.NotNil(t, found)
|
||||
assert.Equal(t, "9.9.9.9", found.ExternalIP)
|
||||
|
||||
require.NoError(t, mgr.DetachNATGateway(ctx, "vpc-1", "10.0.1.0/24"))
|
||||
require.NoError(t, mgr.DetachNATGateway(ctx, "vpc-1", "10.0.1.0/24")) // idempotent
|
||||
}
|
||||
|
||||
func TestNATGWManager_AttachRejectsEmptyFields(t *testing.T) {
|
||||
nm, _ := policy.NewNATManager(mock.New(), policy.NATModeCentralized)
|
||||
mgr, _ := NewNATGWManager(nm)
|
||||
require.Error(t, mgr.AttachNATGateway(context.Background(), policy.NATGWSpec{}))
|
||||
}
|
||||
Vendored
+248
@@ -0,0 +1,248 @@
|
||||
package external
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"log/slog"
|
||||
"net"
|
||||
|
||||
"github.com/mulgadc/spinifex/spinifex/network/ovn"
|
||||
"github.com/mulgadc/spinifex/spinifex/network/topology"
|
||||
)
|
||||
|
||||
// linkLocalGatewayNetwork is the link-local /30 every IGW gateway LRP
|
||||
// carries in distributed-NAT (physical uplink) mode. The LRP IP itself
|
||||
// never goes on the wire — per-VM dnat_and_snat rules with
|
||||
// external_mac/logical_port ensure each chassis SNATs locally using its
|
||||
// own uplink MAC.
|
||||
//
|
||||
// Centralised NAT (veth uplink) cannot use this — the gateway LRP is the
|
||||
// on-wire egress point and must hold a WAN-subnet IP from the pool's
|
||||
// gw_lrp_range so upstream router ARP succeeds (RFC 826).
|
||||
const linkLocalGatewayNetwork = "169.254.0.1/30"
|
||||
|
||||
// linkLocalGatewayNexthop is the upstream end of linkLocalGatewayNetwork
|
||||
// used as the default route nexthop in pool-less or pool-Gateway-empty
|
||||
// configurations. Real deployments override via pool.Gateway.
|
||||
const linkLocalGatewayNexthop = "169.254.0.2"
|
||||
|
||||
// gatewayIPExtIDKey is the LRP external_ids key holding the gateway LRP
|
||||
// IP allocated from the pool's gw_lrp_range. Persisted so reconcile can
|
||||
// recover the assignment without re-allocating and so sibling allocations
|
||||
// see it as "used".
|
||||
const gatewayIPExtIDKey = "spinifex:gateway_ip"
|
||||
|
||||
// FindPool returns the first pool matching the given region/AZ, using the
|
||||
// fallback order: AZ-scoped → region-scoped → unscoped. Returns nil when
|
||||
// no pool matches.
|
||||
func FindPool(pools []ExternalPoolConfig, region, az string) *ExternalPoolConfig {
|
||||
for i := range pools {
|
||||
p := &pools[i]
|
||||
if p.AZ != "" && p.AZ == az && p.Region == region {
|
||||
return p
|
||||
}
|
||||
}
|
||||
for i := range pools {
|
||||
p := &pools[i]
|
||||
if p.AZ == "" && p.Region != "" && p.Region == region {
|
||||
return p
|
||||
}
|
||||
}
|
||||
for i := range pools {
|
||||
p := &pools[i]
|
||||
if p.Region == "" && p.AZ == "" {
|
||||
return p
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// GatewayIPAllocator resolves the gateway LRP IP for a VPC under a given
|
||||
// pool. Implementations:
|
||||
//
|
||||
// - StaticRangeAllocator (this package): picks the next free IP in
|
||||
// pool.gw_lrp_range, persisting the assignment via the LRP's
|
||||
// external_ids so reconciles see it on retry.
|
||||
//
|
||||
// - DHCP-backed allocator (lives in services/vpcd until bead
|
||||
// mulga-siv-125.3.3 lands): requests an upstream DHCP lease and reuses
|
||||
// it on idempotent re-attach.
|
||||
//
|
||||
// - LinkLocalAllocator (this package): always returns ok=false; callers
|
||||
// fall back to linkLocalGatewayNetwork. Useful for distributed-NAT
|
||||
// deployments where the gateway LRP never goes on the wire.
|
||||
//
|
||||
// Allocate's ok=false return means "I have nothing to provide" (caller
|
||||
// falls back to link-local); a non-nil error means "the allocation
|
||||
// attempt failed" (caller aborts).
|
||||
type GatewayIPAllocator interface {
|
||||
Allocate(ctx context.Context, vpcID string, pool *ExternalPoolConfig) (ip string, prefixLen int, ok bool, err error)
|
||||
Release(ctx context.Context, vpcID string) error
|
||||
}
|
||||
|
||||
// LinkLocalAllocator always returns ok=false. Use in distributed-NAT
|
||||
// deployments where the gateway LRP is link-local and per-VM dnat_and_snat
|
||||
// handles ARP per chassis.
|
||||
type LinkLocalAllocator struct{}
|
||||
|
||||
var _ GatewayIPAllocator = LinkLocalAllocator{}
|
||||
|
||||
// Allocate always returns ok=false (caller uses linkLocalGatewayNetwork).
|
||||
func (LinkLocalAllocator) Allocate(_ context.Context, _ string, _ *ExternalPoolConfig) (string, int, bool, error) {
|
||||
return "", 0, false, nil
|
||||
}
|
||||
|
||||
// Release is a no-op — link-local IPs are not held in any store.
|
||||
func (LinkLocalAllocator) Release(_ context.Context, _ string) error { return nil }
|
||||
|
||||
// StaticRangeAllocator picks the next free IP in pool.gw_lrp_range for a
|
||||
// VPC's gateway LRP. Reads existing LRP external_ids to compute the used
|
||||
// set and persists the chosen IP via IGWManager's LRP create path —
|
||||
// allocator itself doesn't write, only reads.
|
||||
type StaticRangeAllocator struct {
|
||||
OVN ovn.Client
|
||||
}
|
||||
|
||||
var _ GatewayIPAllocator = (*StaticRangeAllocator)(nil)
|
||||
|
||||
// NewStaticRangeAllocator constructs a StaticRangeAllocator backed by the
|
||||
// given OVN client.
|
||||
func NewStaticRangeAllocator(client ovn.Client) *StaticRangeAllocator {
|
||||
return &StaticRangeAllocator{OVN: client}
|
||||
}
|
||||
|
||||
// Allocate returns the next free gateway LRP IP for vpcID in pool's
|
||||
// gw_lrp_range. If the VPC's gateway LRP already exists with a recorded
|
||||
// allocation, the existing IP is returned (idempotent). Returns ok=false
|
||||
// when the pool has no usable range (caller falls back to link-local).
|
||||
func (a *StaticRangeAllocator) Allocate(ctx context.Context, vpcID string, pool *ExternalPoolConfig) (string, int, bool, error) {
|
||||
start, end, prefix, ok := gwLrpRange(pool)
|
||||
if !ok {
|
||||
return "", 0, false, nil
|
||||
}
|
||||
|
||||
gwPortName := topology.GatewayRouterPort(vpcID)
|
||||
lrps, err := a.OVN.ListLogicalRouterPorts(ctx)
|
||||
if err != nil {
|
||||
return "", 0, false, fmt.Errorf("list LRPs for gw IP allocation: %w", err)
|
||||
}
|
||||
used := make(map[uint32]struct{}, len(lrps))
|
||||
for _, lrp := range lrps {
|
||||
existing := lrp.ExternalIDs[gatewayIPExtIDKey]
|
||||
if existing == "" {
|
||||
continue
|
||||
}
|
||||
if lrp.Name == gwPortName {
|
||||
return existing, prefix, true, nil
|
||||
}
|
||||
if v := net.ParseIP(existing).To4(); v != nil {
|
||||
used[ipv4ToUint32(v)] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
startU := ipv4ToUint32(start)
|
||||
endU := ipv4ToUint32(end)
|
||||
for n := startU; n <= endU; n++ {
|
||||
if _, taken := used[n]; taken {
|
||||
continue
|
||||
}
|
||||
return uint32ToIPv4(n).String(), prefix, true, nil
|
||||
}
|
||||
return "", 0, false, fmt.Errorf("gw_lrp_range exhausted for pool %q (%s-%s)", pool.Name, pool.GwLrpRangeStart, pool.GwLrpRangeEnd)
|
||||
}
|
||||
|
||||
// Release is a no-op — the LRP external_id is the source of truth and is
|
||||
// cleared when the LRP itself is deleted on IGW detach.
|
||||
func (a *StaticRangeAllocator) Release(_ context.Context, _ string) error { return nil }
|
||||
|
||||
// gwLrpRange returns the per-VPC gateway LRP IP range for a pool. Priority:
|
||||
//
|
||||
// 1. Explicit pool.GwLrpRangeStart/End.
|
||||
// 2. Auto-derived from pool.Gateway + pool.PrefixLen — last 16 host IPs of
|
||||
// the WAN subnet (broadcast - 16 .. broadcast - 1). When that range
|
||||
// overlaps the per-VM EIP range (RangeStart..RangeEnd), shift to the
|
||||
// 16 IPs immediately below RangeStart.
|
||||
//
|
||||
// Returns ok=false when the pool is missing or the gateway/prefix is
|
||||
// unparseable — link-local has no role here, the WAN-subnet IP is the only
|
||||
// thing the upstream router will ARP-resolve.
|
||||
func gwLrpRange(pool *ExternalPoolConfig) (start, end net.IP, prefix int, ok bool) {
|
||||
if pool == nil {
|
||||
return nil, nil, 0, false
|
||||
}
|
||||
prefix = pool.PrefixLen
|
||||
if prefix <= 0 || prefix > 32 {
|
||||
prefix = 24
|
||||
}
|
||||
|
||||
if pool.GwLrpRangeStart != "" || pool.GwLrpRangeEnd != "" {
|
||||
s := net.ParseIP(pool.GwLrpRangeStart).To4()
|
||||
e := net.ParseIP(pool.GwLrpRangeEnd).To4()
|
||||
if s != nil && e != nil && ipv4ToUint32(s) <= ipv4ToUint32(e) {
|
||||
return s, e, prefix, true
|
||||
}
|
||||
slog.Warn("external: invalid explicit gw_lrp_range, attempting auto-derive",
|
||||
"pool", pool.Name, "start", pool.GwLrpRangeStart, "end", pool.GwLrpRangeEnd)
|
||||
}
|
||||
|
||||
gw := net.ParseIP(pool.Gateway).To4()
|
||||
if gw == nil {
|
||||
return nil, nil, 0, false
|
||||
}
|
||||
mask := net.CIDRMask(prefix, 32)
|
||||
network := gw.Mask(mask)
|
||||
bcast := make(net.IP, 4)
|
||||
for i := range 4 {
|
||||
bcast[i] = network[i] | ^mask[i]
|
||||
}
|
||||
bcastU := ipv4ToUint32(bcast)
|
||||
if bcastU < 17 {
|
||||
return nil, nil, 0, false
|
||||
}
|
||||
autoEndU := bcastU - 1
|
||||
autoStartU := bcastU - 16
|
||||
|
||||
if pool.RangeStart != "" && pool.RangeEnd != "" {
|
||||
rs := net.ParseIP(pool.RangeStart).To4()
|
||||
re := net.ParseIP(pool.RangeEnd).To4()
|
||||
if rs != nil && re != nil {
|
||||
rsU := ipv4ToUint32(rs)
|
||||
reU := ipv4ToUint32(re)
|
||||
if autoEndU >= rsU && autoStartU <= reU {
|
||||
if rsU < 17 {
|
||||
return nil, nil, 0, false
|
||||
}
|
||||
autoEndU = rsU - 1
|
||||
autoStartU = rsU - 16
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
netU := ipv4ToUint32(network)
|
||||
if autoStartU <= netU {
|
||||
autoStartU = netU + 1
|
||||
}
|
||||
if autoEndU >= bcastU {
|
||||
autoEndU = bcastU - 1
|
||||
}
|
||||
if autoStartU > autoEndU {
|
||||
return nil, nil, 0, false
|
||||
}
|
||||
|
||||
gwU := ipv4ToUint32(gw)
|
||||
if gwU >= autoStartU && gwU <= autoEndU {
|
||||
switch gwU {
|
||||
case autoStartU:
|
||||
autoStartU++
|
||||
case autoEndU:
|
||||
autoEndU--
|
||||
default:
|
||||
autoStartU = gwU + 1
|
||||
}
|
||||
if autoStartU > autoEndU {
|
||||
return nil, nil, 0, false
|
||||
}
|
||||
}
|
||||
|
||||
return uint32ToIPv4(autoStartU), uint32ToIPv4(autoEndU), prefix, true
|
||||
}
|
||||
+182
@@ -0,0 +1,182 @@
|
||||
package external
|
||||
|
||||
import (
|
||||
"context"
|
||||
"net"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
|
||||
"github.com/mulgadc/spinifex/spinifex/network/ovn/mock"
|
||||
"github.com/mulgadc/spinifex/spinifex/network/topology"
|
||||
"github.com/mulgadc/spinifex/spinifex/services/vpcd/nbdb"
|
||||
)
|
||||
|
||||
func TestFindPool_AZBeatsRegionBeatsUnscoped(t *testing.T) {
|
||||
pools := []ExternalPoolConfig{
|
||||
{Name: "default"},
|
||||
{Name: "region-us", Region: "us"},
|
||||
{Name: "az-us-1a", Region: "us", AZ: "us-1a"},
|
||||
}
|
||||
|
||||
assert.Equal(t, "az-us-1a", FindPool(pools, "us", "us-1a").Name)
|
||||
assert.Equal(t, "region-us", FindPool(pools, "us", "us-1b").Name)
|
||||
assert.Equal(t, "default", FindPool(pools, "eu", "eu-1a").Name)
|
||||
}
|
||||
|
||||
func TestFindPool_NoMatchReturnsNil(t *testing.T) {
|
||||
pools := []ExternalPoolConfig{{Name: "region-us", Region: "us"}}
|
||||
assert.Nil(t, FindPool(pools, "eu", "eu-1a"))
|
||||
}
|
||||
|
||||
func TestLinkLocalAllocator_AlwaysReturnsNotOK(t *testing.T) {
|
||||
a := LinkLocalAllocator{}
|
||||
ip, prefix, ok, err := a.Allocate(context.Background(), "vpc-1", &ExternalPoolConfig{Gateway: "192.168.1.1", PrefixLen: 24})
|
||||
require.NoError(t, err)
|
||||
assert.False(t, ok)
|
||||
assert.Empty(t, ip)
|
||||
assert.Zero(t, prefix)
|
||||
require.NoError(t, a.Release(context.Background(), "vpc-1"))
|
||||
}
|
||||
|
||||
func TestStaticRangeAllocator_ExplicitRange_AllocatesFirstFree(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
a := NewStaticRangeAllocator(m)
|
||||
|
||||
pool := &ExternalPoolConfig{
|
||||
Name: "p",
|
||||
Gateway: "192.168.1.1",
|
||||
PrefixLen: 24,
|
||||
GwLrpRangeStart: "192.168.1.240",
|
||||
GwLrpRangeEnd: "192.168.1.243",
|
||||
}
|
||||
|
||||
ip, prefix, ok, err := a.Allocate(ctx, "vpc-1", pool)
|
||||
require.NoError(t, err)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, "192.168.1.240", ip)
|
||||
assert.Equal(t, 24, prefix)
|
||||
}
|
||||
|
||||
func TestStaticRangeAllocator_SkipsUsedIPs(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
// Seed an existing LRP on a sibling VPC already holding .240.
|
||||
require.NoError(t, m.CreateLogicalRouter(ctx, &nbdb.LogicalRouter{Name: topology.VPCRouter("vpc-other")}))
|
||||
require.NoError(t, m.CreateLogicalRouterPort(ctx, topology.VPCRouter("vpc-other"), &nbdb.LogicalRouterPort{
|
||||
Name: topology.GatewayRouterPort("vpc-other"),
|
||||
ExternalIDs: map[string]string{gatewayIPExtIDKey: "192.168.1.240"},
|
||||
}))
|
||||
a := NewStaticRangeAllocator(m)
|
||||
|
||||
pool := &ExternalPoolConfig{
|
||||
Gateway: "192.168.1.1", PrefixLen: 24,
|
||||
GwLrpRangeStart: "192.168.1.240", GwLrpRangeEnd: "192.168.1.243",
|
||||
}
|
||||
|
||||
ip, _, ok, err := a.Allocate(ctx, "vpc-new", pool)
|
||||
require.NoError(t, err)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, "192.168.1.241", ip)
|
||||
}
|
||||
|
||||
func TestStaticRangeAllocator_ReturnsExistingForSameVPC(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
require.NoError(t, m.CreateLogicalRouter(ctx, &nbdb.LogicalRouter{Name: topology.VPCRouter("vpc-1")}))
|
||||
require.NoError(t, m.CreateLogicalRouterPort(ctx, topology.VPCRouter("vpc-1"), &nbdb.LogicalRouterPort{
|
||||
Name: topology.GatewayRouterPort("vpc-1"),
|
||||
ExternalIDs: map[string]string{gatewayIPExtIDKey: "192.168.1.242"},
|
||||
}))
|
||||
a := NewStaticRangeAllocator(m)
|
||||
|
||||
pool := &ExternalPoolConfig{
|
||||
Gateway: "192.168.1.1", PrefixLen: 24,
|
||||
GwLrpRangeStart: "192.168.1.240", GwLrpRangeEnd: "192.168.1.243",
|
||||
}
|
||||
|
||||
ip, _, ok, err := a.Allocate(ctx, "vpc-1", pool)
|
||||
require.NoError(t, err)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, "192.168.1.242", ip)
|
||||
}
|
||||
|
||||
func TestStaticRangeAllocator_RangeExhaustedReturnsError(t *testing.T) {
|
||||
ctx := context.Background()
|
||||
m := mock.New()
|
||||
require.NoError(t, m.CreateLogicalRouter(ctx, &nbdb.LogicalRouter{Name: topology.VPCRouter("vpc-other")}))
|
||||
require.NoError(t, m.CreateLogicalRouterPort(ctx, topology.VPCRouter("vpc-other"), &nbdb.LogicalRouterPort{
|
||||
Name: topology.GatewayRouterPort("vpc-other"),
|
||||
ExternalIDs: map[string]string{gatewayIPExtIDKey: "192.168.1.240"},
|
||||
}))
|
||||
a := NewStaticRangeAllocator(m)
|
||||
pool := &ExternalPoolConfig{
|
||||
Gateway: "192.168.1.1", PrefixLen: 24,
|
||||
GwLrpRangeStart: "192.168.1.240", GwLrpRangeEnd: "192.168.1.240",
|
||||
}
|
||||
|
||||
_, _, ok, err := a.Allocate(ctx, "vpc-new", pool)
|
||||
require.Error(t, err)
|
||||
assert.False(t, ok)
|
||||
}
|
||||
|
||||
func TestStaticRangeAllocator_NoRangeReturnsNotOK(t *testing.T) {
|
||||
a := NewStaticRangeAllocator(mock.New())
|
||||
_, _, ok, err := a.Allocate(context.Background(), "vpc-1", &ExternalPoolConfig{})
|
||||
require.NoError(t, err)
|
||||
assert.False(t, ok)
|
||||
}
|
||||
|
||||
func TestGwLrpRange_AutoDeriveTopOfSubnet(t *testing.T) {
|
||||
pool := &ExternalPoolConfig{Gateway: "192.168.1.1", PrefixLen: 24}
|
||||
start, end, prefix, ok := gwLrpRange(pool)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, "192.168.1.239", start.String())
|
||||
assert.Equal(t, "192.168.1.254", end.String())
|
||||
assert.Equal(t, 24, prefix)
|
||||
}
|
||||
|
||||
func TestGwLrpRange_ShiftsBelowEIPRangeOnOverlap(t *testing.T) {
|
||||
pool := &ExternalPoolConfig{
|
||||
Gateway: "192.168.1.1",
|
||||
PrefixLen: 24,
|
||||
RangeStart: "192.168.1.240",
|
||||
RangeEnd: "192.168.1.250",
|
||||
}
|
||||
start, end, _, ok := gwLrpRange(pool)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, "192.168.1.224", start.String())
|
||||
assert.Equal(t, "192.168.1.239", end.String())
|
||||
}
|
||||
|
||||
func TestGwLrpRange_ExplicitTakesPriority(t *testing.T) {
|
||||
pool := &ExternalPoolConfig{
|
||||
Gateway: "192.168.1.1", PrefixLen: 24,
|
||||
GwLrpRangeStart: "192.168.1.10",
|
||||
GwLrpRangeEnd: "192.168.1.20",
|
||||
}
|
||||
start, end, _, ok := gwLrpRange(pool)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, "192.168.1.10", start.String())
|
||||
assert.Equal(t, "192.168.1.20", end.String())
|
||||
}
|
||||
|
||||
func TestGwLrpRange_NilPoolReturnsNotOK(t *testing.T) {
|
||||
_, _, _, ok := gwLrpRange(nil)
|
||||
assert.False(t, ok)
|
||||
}
|
||||
|
||||
func TestGwLrpRange_GatewayInsideAutoRangeIsExcluded(t *testing.T) {
|
||||
// Tiny /29 forces the auto-range to overlap the gateway IP.
|
||||
pool := &ExternalPoolConfig{Gateway: "192.168.1.1", PrefixLen: 29}
|
||||
start, end, _, ok := gwLrpRange(pool)
|
||||
require.True(t, ok)
|
||||
startU := ipv4ToUint32(start)
|
||||
endU := ipv4ToUint32(end)
|
||||
gwU := ipv4ToUint32(net.ParseIP(pool.Gateway).To4())
|
||||
for n := startU; n <= endU; n++ {
|
||||
assert.NotEqual(t, gwU, n, "gateway IP must not appear in auto-range")
|
||||
}
|
||||
}
|
||||
Vendored
+45
@@ -0,0 +1,45 @@
|
||||
package external
|
||||
|
||||
// ExternalPoolConfig describes one external IP pool wired to a VPC. Mirrors
|
||||
// the [external_pools] entry in spinifex.toml. Two pool kinds are supported:
|
||||
//
|
||||
// - Source="static": IPs come from RangeStart..RangeEnd, gateway from
|
||||
// Gateway, and the gateway LRP IP from GwLrpRangeStart..GwLrpRangeEnd
|
||||
// (auto-derived from the WAN subnet when unset).
|
||||
//
|
||||
// - Source="dhcp": IPs come from upstream router DHCP. The gateway LRP IP
|
||||
// is acquired via upstream DHCP using the pool's DhcpBindBridge. This
|
||||
// package does not include the DHCP client; callers inject a
|
||||
// GatewayIPAllocator that knows how to talk to the DHCP store.
|
||||
//
|
||||
// This type duplicates services/vpcd/vpcd.go's ExternalPoolConfig. Dedup is
|
||||
// out of scope for this bead; the two will merge when L2 (topology) grows
|
||||
// the L5-driving methods and vpcd's local copy disappears.
|
||||
type ExternalPoolConfig struct {
|
||||
Name string
|
||||
Source string
|
||||
RangeStart string
|
||||
RangeEnd string
|
||||
Gateway string
|
||||
GatewayIP string
|
||||
PrefixLen int
|
||||
DNSServers []string
|
||||
Region string
|
||||
AZ string
|
||||
DhcpBindBridge string
|
||||
GwLrpRangeStart string
|
||||
GwLrpRangeEnd string
|
||||
}
|
||||
|
||||
// IsDHCP reports whether the pool acquires IPs from an upstream DHCP server.
|
||||
func (p *ExternalPoolConfig) IsDHCP() bool {
|
||||
return p.Source == "dhcp"
|
||||
}
|
||||
|
||||
// IGWSpec is the L5 input for IGWManager.AttachIGW / DetachIGW. VPCID is
|
||||
// the only required field; InternetGatewayID is propagated into OVN
|
||||
// external_ids so reconcile paths can correlate state.
|
||||
type IGWSpec struct {
|
||||
VPCID string
|
||||
InternetGatewayID string
|
||||
}
|
||||
Reference in New Issue
Block a user