kilo/pkg/k8s/backend_test.go

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// Copyright 2019 the Kilo authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package k8s
import (
"net"
"testing"
"github.com/kylelemons/godebug/pretty"
v1 "k8s.io/api/core/v1"
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"github.com/squat/kilo/pkg/k8s/apis/kilo/v1alpha1"
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"github.com/squat/kilo/pkg/mesh"
"github.com/squat/kilo/pkg/wireguard"
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)
func TestTranslateNode(t *testing.T) {
for _, tc := range []struct {
name string
annotations map[string]string
labels map[string]string
out *mesh.Node
subnet string
}{
{
name: "empty",
annotations: nil,
out: &mesh.Node{},
},
{
name: "invalid ips",
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annotations: map[string]string{
externalIPAnnotationKey: "10.0.0.1",
internalIPAnnotationKey: "foo",
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},
out: &mesh.Node{},
},
{
name: "valid ips",
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annotations: map[string]string{
externalIPAnnotationKey: "10.0.0.1/24",
internalIPAnnotationKey: "10.0.0.2/32",
},
out: &mesh.Node{
ExternalIP: &net.IPNet{IP: net.ParseIP("10.0.0.1"), Mask: net.CIDRMask(24, 32)},
InternalIP: &net.IPNet{IP: net.ParseIP("10.0.0.2"), Mask: net.CIDRMask(32, 32)},
},
},
{
name: "invalid subnet",
annotations: map[string]string{},
out: &mesh.Node{},
subnet: "foo",
},
{
name: "normalize subnet",
annotations: map[string]string{},
out: &mesh.Node{
Subnet: &net.IPNet{IP: net.ParseIP("10.2.0.0"), Mask: net.CIDRMask(24, 32)},
},
subnet: "10.2.0.1/24",
},
{
name: "valid subnet",
annotations: map[string]string{},
out: &mesh.Node{
Subnet: &net.IPNet{IP: net.ParseIP("10.2.1.0"), Mask: net.CIDRMask(24, 32)},
},
subnet: "10.2.1.0/24",
},
{
name: "region",
labels: map[string]string{
regionLabelKey: "a",
},
out: &mesh.Node{
Location: "a",
},
},
{
name: "region override",
annotations: map[string]string{
locationAnnotationKey: "b",
},
labels: map[string]string{
regionLabelKey: "a",
},
out: &mesh.Node{
Location: "b",
},
},
{
name: "external IP override",
annotations: map[string]string{
externalIPAnnotationKey: "10.0.0.1/24",
forceExternalIPAnnotationKey: "10.0.0.2/24",
},
out: &mesh.Node{
ExternalIP: &net.IPNet{IP: net.ParseIP("10.0.0.2"), Mask: net.CIDRMask(24, 32)},
},
},
{
name: "internal IP override",
annotations: map[string]string{
internalIPAnnotationKey: "10.1.0.1/24",
forceInternalIPAnnotationKey: "10.1.0.2/24",
},
out: &mesh.Node{
InternalIP: &net.IPNet{IP: net.ParseIP("10.1.0.2"), Mask: net.CIDRMask(24, 32)},
},
},
{
name: "invalid time",
annotations: map[string]string{
lastSeenAnnotationKey: "foo",
},
out: &mesh.Node{},
},
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{
name: "complete",
annotations: map[string]string{
externalIPAnnotationKey: "10.0.0.1/24",
forceExternalIPAnnotationKey: "10.0.0.2/24",
forceInternalIPAnnotationKey: "10.1.0.2/32",
internalIPAnnotationKey: "10.1.0.1/32",
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keyAnnotationKey: "foo",
lastSeenAnnotationKey: "1000000000",
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leaderAnnotationKey: "",
locationAnnotationKey: "b",
wireGuardIPAnnotationKey: "10.4.0.1/16",
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},
labels: map[string]string{
regionLabelKey: "a",
},
out: &mesh.Node{
ExternalIP: &net.IPNet{IP: net.ParseIP("10.0.0.2"), Mask: net.CIDRMask(24, 32)},
InternalIP: &net.IPNet{IP: net.ParseIP("10.1.0.2"), Mask: net.CIDRMask(32, 32)},
Key: []byte("foo"),
LastSeen: 1000000000,
Leader: true,
Location: "b",
Subnet: &net.IPNet{IP: net.ParseIP("10.2.1.0"), Mask: net.CIDRMask(24, 32)},
WireGuardIP: &net.IPNet{IP: net.ParseIP("10.4.0.1"), Mask: net.CIDRMask(16, 32)},
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},
subnet: "10.2.1.0/24",
},
} {
n := &v1.Node{}
n.ObjectMeta.Annotations = tc.annotations
n.ObjectMeta.Labels = tc.labels
n.Spec.PodCIDR = tc.subnet
node := translateNode(n)
if diff := pretty.Compare(node, tc.out); diff != "" {
t.Errorf("test case %q: got diff: %v", tc.name, diff)
}
}
}
func TestTranslatePeer(t *testing.T) {
for _, tc := range []struct {
name string
out *mesh.Peer
spec v1alpha1.PeerSpec
}{
{
name: "empty",
out: &mesh.Peer{},
},
{
name: "invalid ips",
spec: v1alpha1.PeerSpec{
AllowedIPs: []string{
"10.0.0.1",
"foo",
},
},
out: &mesh.Peer{},
},
{
name: "valid ips",
spec: v1alpha1.PeerSpec{
AllowedIPs: []string{
"10.0.0.1/24",
"10.0.0.2/32",
},
},
out: &mesh.Peer{
Peer: wireguard.Peer{
AllowedIPs: []*net.IPNet{
{IP: net.ParseIP("10.0.0.1"), Mask: net.CIDRMask(24, 32)},
{IP: net.ParseIP("10.0.0.2"), Mask: net.CIDRMask(32, 32)},
},
},
},
},
{
name: "invalid endpoint ip",
spec: v1alpha1.PeerSpec{
Endpoint: &v1alpha1.PeerEndpoint{
IP: "foo",
Port: mesh.DefaultKiloPort,
},
},
out: &mesh.Peer{},
},
{
name: "valid endpoint",
spec: v1alpha1.PeerSpec{
Endpoint: &v1alpha1.PeerEndpoint{
IP: "10.0.0.1",
Port: mesh.DefaultKiloPort,
},
},
out: &mesh.Peer{
Peer: wireguard.Peer{
Endpoint: &wireguard.Endpoint{
IP: net.ParseIP("10.0.0.1"),
Port: mesh.DefaultKiloPort,
},
},
},
},
{
name: "empty key",
spec: v1alpha1.PeerSpec{
PublicKey: "",
},
out: &mesh.Peer{},
},
{
name: "valid key",
spec: v1alpha1.PeerSpec{
PublicKey: "foo",
},
out: &mesh.Peer{
Peer: wireguard.Peer{
PublicKey: []byte("foo"),
},
},
},
{
name: "invalid keepalive",
spec: v1alpha1.PeerSpec{
PersistentKeepalive: -1,
},
out: &mesh.Peer{},
},
{
name: "valid keepalive",
spec: v1alpha1.PeerSpec{
PersistentKeepalive: 1,
},
out: &mesh.Peer{
Peer: wireguard.Peer{
PersistentKeepalive: 1,
},
},
},
} {
p := &v1alpha1.Peer{}
p.Spec = tc.spec
peer := translatePeer(p)
if diff := pretty.Compare(peer, tc.out); diff != "" {
t.Errorf("test case %q: got diff: %v", tc.name, diff)
}
}
}