983 lines
31 KiB
Go
983 lines
31 KiB
Go
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// Copyright 2019 the Kilo authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package mesh
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import (
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"net"
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"strings"
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"testing"
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"github.com/kylelemons/godebug/pretty"
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"github.com/vishvananda/netlink"
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"golang.org/x/sys/unix"
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)
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func allowedIPs(ips ...string) string {
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return strings.Join(ips, ", ")
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}
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func setup(t *testing.T) (map[string]*Node, []byte, int, *net.IPNet) {
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key := []byte("private")
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port := 51820
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_, kiloNet, err := net.ParseCIDR("10.4.0.0/16")
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if err != nil {
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t.Fatalf("failed to parse Kilo subnet CIDR: %v", err)
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}
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ip, e1, err := net.ParseCIDR("10.1.0.1/16")
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if err != nil {
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t.Fatalf("failed to parse external IP CIDR: %v", err)
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}
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e1.IP = ip
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ip, e2, err := net.ParseCIDR("10.1.0.2/16")
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if err != nil {
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t.Fatalf("failed to parse external IP CIDR: %v", err)
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}
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e2.IP = ip
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ip, e3, err := net.ParseCIDR("10.1.0.3/16")
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if err != nil {
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t.Fatalf("failed to parse external IP CIDR: %v", err)
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}
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e3.IP = ip
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ip, i1, err := net.ParseCIDR("192.168.0.1/24")
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if err != nil {
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t.Fatalf("failed to parse internal IP CIDR: %v", err)
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}
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i1.IP = ip
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ip, i2, err := net.ParseCIDR("192.168.0.2/24")
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if err != nil {
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t.Fatalf("failed to parse internal IP CIDR: %v", err)
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}
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i2.IP = ip
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nodes := map[string]*Node{
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"a": {
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Name: "a",
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ExternalIP: e1,
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InternalIP: i1,
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Location: "1",
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Subnet: &net.IPNet{IP: net.ParseIP("10.2.1.0"), Mask: net.CIDRMask(24, 32)},
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Key: []byte("key1"),
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},
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"b": {
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Name: "b",
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ExternalIP: e2,
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InternalIP: i1,
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Location: "2",
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Subnet: &net.IPNet{IP: net.ParseIP("10.2.2.0"), Mask: net.CIDRMask(24, 32)},
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Key: []byte("key2"),
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},
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"c": {
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Name: "c",
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ExternalIP: e3,
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InternalIP: i2,
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// Same location a node b.
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Location: "2",
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Subnet: &net.IPNet{IP: net.ParseIP("10.2.3.0"), Mask: net.CIDRMask(24, 32)},
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Key: []byte("key3"),
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},
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}
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return nodes, key, port, kiloNet
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}
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func TestNewTopology(t *testing.T) {
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nodes, key, port, kiloNet := setup(t)
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w1 := net.ParseIP("10.4.0.1").To4()
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w2 := net.ParseIP("10.4.0.2").To4()
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w3 := net.ParseIP("10.4.0.3").To4()
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for _, tc := range []struct {
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name string
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granularity Granularity
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hostname string
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result *Topology
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}{
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{
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name: "datacenter from a",
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granularity: DataCenterGranularity,
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hostname: nodes["a"].Name,
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result: &Topology{
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hostname: nodes["a"].Name,
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leader: true,
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Location: nodes["a"].Location,
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subnet: kiloNet,
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privateIP: nodes["a"].InternalIP,
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wireGuardCIDR: &net.IPNet{IP: w1, Mask: net.CIDRMask(16, 32)},
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Segments: []*segment{
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{
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AllowedIPs: allowedIPs(nodes["a"].Subnet.String(), "192.168.0.1/32", "10.4.0.1/32"),
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Endpoint: nodes["a"].ExternalIP.IP.String(),
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Key: string(nodes["a"].Key),
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Location: nodes["a"].Location,
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cidrs: []*net.IPNet{nodes["a"].Subnet},
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hostnames: []string{"a"},
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privateIPs: []net.IP{nodes["a"].InternalIP.IP},
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wireGuardIP: w1,
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},
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{
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AllowedIPs: allowedIPs(nodes["b"].Subnet.String(), "192.168.0.1/32", nodes["c"].Subnet.String(), "192.168.0.2/32", "10.4.0.2/32"),
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Endpoint: nodes["b"].ExternalIP.IP.String(),
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Key: string(nodes["b"].Key),
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Location: nodes["b"].Location,
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cidrs: []*net.IPNet{nodes["b"].Subnet, nodes["c"].Subnet},
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hostnames: []string{"b", "c"},
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privateIPs: []net.IP{nodes["b"].InternalIP.IP, nodes["c"].InternalIP.IP},
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wireGuardIP: w2,
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},
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},
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},
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},
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{
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name: "datacenter from b",
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granularity: DataCenterGranularity,
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hostname: nodes["b"].Name,
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result: &Topology{
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hostname: nodes["b"].Name,
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leader: true,
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Location: nodes["b"].Location,
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subnet: kiloNet,
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privateIP: nodes["b"].InternalIP,
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wireGuardCIDR: &net.IPNet{IP: w2, Mask: net.CIDRMask(16, 32)},
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Segments: []*segment{
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{
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AllowedIPs: allowedIPs(nodes["a"].Subnet.String(), "192.168.0.1/32", "10.4.0.1/32"),
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Endpoint: nodes["a"].ExternalIP.IP.String(),
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Key: string(nodes["a"].Key),
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Location: nodes["a"].Location,
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cidrs: []*net.IPNet{nodes["a"].Subnet},
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hostnames: []string{"a"},
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privateIPs: []net.IP{nodes["a"].InternalIP.IP},
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wireGuardIP: w1,
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},
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{
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AllowedIPs: allowedIPs(nodes["b"].Subnet.String(), "192.168.0.1/32", nodes["c"].Subnet.String(), "192.168.0.2/32", "10.4.0.2/32"),
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Endpoint: nodes["b"].ExternalIP.IP.String(),
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Key: string(nodes["b"].Key),
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Location: nodes["b"].Location,
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cidrs: []*net.IPNet{nodes["b"].Subnet, nodes["c"].Subnet},
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hostnames: []string{"b", "c"},
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privateIPs: []net.IP{nodes["b"].InternalIP.IP, nodes["c"].InternalIP.IP},
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wireGuardIP: w2,
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},
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},
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},
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},
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{
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name: "datacenter from c",
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granularity: DataCenterGranularity,
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hostname: nodes["c"].Name,
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result: &Topology{
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hostname: nodes["c"].Name,
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leader: false,
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Location: nodes["b"].Location,
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subnet: kiloNet,
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privateIP: nodes["c"].InternalIP,
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wireGuardCIDR: nil,
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Segments: []*segment{
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{
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AllowedIPs: allowedIPs(nodes["a"].Subnet.String(), "192.168.0.1/32", "10.4.0.1/32"),
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Endpoint: nodes["a"].ExternalIP.IP.String(),
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Key: string(nodes["a"].Key),
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Location: nodes["a"].Location,
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cidrs: []*net.IPNet{nodes["a"].Subnet},
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hostnames: []string{"a"},
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privateIPs: []net.IP{nodes["a"].InternalIP.IP},
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wireGuardIP: w1,
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},
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{
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AllowedIPs: allowedIPs(nodes["b"].Subnet.String(), "192.168.0.1/32", nodes["c"].Subnet.String(), "192.168.0.2/32", "10.4.0.2/32"),
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Endpoint: nodes["b"].ExternalIP.IP.String(),
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Key: string(nodes["b"].Key),
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Location: nodes["b"].Location,
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cidrs: []*net.IPNet{nodes["b"].Subnet, nodes["c"].Subnet},
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hostnames: []string{"b", "c"},
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privateIPs: []net.IP{nodes["b"].InternalIP.IP, nodes["c"].InternalIP.IP},
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wireGuardIP: w2,
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},
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},
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},
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},
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{
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name: "node from a",
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granularity: NodeGranularity,
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hostname: nodes["a"].Name,
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result: &Topology{
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hostname: nodes["a"].Name,
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leader: true,
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Location: nodes["a"].Name,
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subnet: kiloNet,
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privateIP: nodes["a"].InternalIP,
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wireGuardCIDR: &net.IPNet{IP: w1, Mask: net.CIDRMask(16, 32)},
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Segments: []*segment{
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{
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AllowedIPs: allowedIPs(nodes["a"].Subnet.String(), "192.168.0.1/32", "10.4.0.1/32"),
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Endpoint: nodes["a"].ExternalIP.IP.String(),
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Key: string(nodes["a"].Key),
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Location: nodes["a"].Name,
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cidrs: []*net.IPNet{nodes["a"].Subnet},
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hostnames: []string{"a"},
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privateIPs: []net.IP{nodes["a"].InternalIP.IP},
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wireGuardIP: w1,
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},
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{
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AllowedIPs: allowedIPs(nodes["b"].Subnet.String(), "192.168.0.1/32", "10.4.0.2/32"),
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Endpoint: nodes["b"].ExternalIP.IP.String(),
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Key: string(nodes["b"].Key),
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Location: nodes["b"].Name,
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cidrs: []*net.IPNet{nodes["b"].Subnet},
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hostnames: []string{"b"},
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privateIPs: []net.IP{nodes["b"].InternalIP.IP},
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wireGuardIP: w2,
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},
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{
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AllowedIPs: allowedIPs(nodes["c"].Subnet.String(), "192.168.0.2/32", "10.4.0.3/32"),
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Endpoint: nodes["c"].ExternalIP.IP.String(),
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Key: string(nodes["c"].Key),
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Location: nodes["c"].Name,
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cidrs: []*net.IPNet{nodes["c"].Subnet},
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hostnames: []string{"c"},
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privateIPs: []net.IP{nodes["c"].InternalIP.IP},
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wireGuardIP: w3,
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},
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},
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},
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},
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{
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name: "node from b",
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granularity: NodeGranularity,
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hostname: nodes["b"].Name,
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result: &Topology{
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hostname: nodes["b"].Name,
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leader: true,
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Location: nodes["b"].Name,
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subnet: kiloNet,
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privateIP: nodes["b"].InternalIP,
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wireGuardCIDR: &net.IPNet{IP: w2, Mask: net.CIDRMask(16, 32)},
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Segments: []*segment{
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{
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AllowedIPs: allowedIPs(nodes["a"].Subnet.String(), "192.168.0.1/32", "10.4.0.1/32"),
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Endpoint: nodes["a"].ExternalIP.IP.String(),
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Key: string(nodes["a"].Key),
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Location: nodes["a"].Name,
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cidrs: []*net.IPNet{nodes["a"].Subnet},
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hostnames: []string{"a"},
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privateIPs: []net.IP{nodes["a"].InternalIP.IP},
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wireGuardIP: w1,
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},
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{
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AllowedIPs: allowedIPs(nodes["b"].Subnet.String(), "192.168.0.1/32", "10.4.0.2/32"),
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Endpoint: nodes["b"].ExternalIP.IP.String(),
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Key: string(nodes["b"].Key),
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Location: nodes["b"].Name,
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cidrs: []*net.IPNet{nodes["b"].Subnet},
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hostnames: []string{"b"},
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privateIPs: []net.IP{nodes["b"].InternalIP.IP},
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wireGuardIP: w2,
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},
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{
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AllowedIPs: allowedIPs(nodes["c"].Subnet.String(), "192.168.0.2/32", "10.4.0.3/32"),
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Endpoint: nodes["c"].ExternalIP.IP.String(),
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Key: string(nodes["c"].Key),
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Location: nodes["c"].Name,
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cidrs: []*net.IPNet{nodes["c"].Subnet},
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hostnames: []string{"c"},
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privateIPs: []net.IP{nodes["c"].InternalIP.IP},
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wireGuardIP: w3,
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},
|
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},
|
||
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},
|
||
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},
|
||
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{
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||
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name: "node from c",
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granularity: NodeGranularity,
|
||
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hostname: nodes["c"].Name,
|
||
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result: &Topology{
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||
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hostname: nodes["c"].Name,
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leader: true,
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Location: nodes["c"].Name,
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subnet: kiloNet,
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privateIP: nodes["c"].InternalIP,
|
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wireGuardCIDR: &net.IPNet{IP: w3, Mask: net.CIDRMask(16, 32)},
|
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Segments: []*segment{
|
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{
|
||
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|
AllowedIPs: allowedIPs(nodes["a"].Subnet.String(), "192.168.0.1/32", "10.4.0.1/32"),
|
||
|
|
Endpoint: nodes["a"].ExternalIP.IP.String(),
|
||
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Key: string(nodes["a"].Key),
|
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|
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Location: nodes["a"].Name,
|
||
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cidrs: []*net.IPNet{nodes["a"].Subnet},
|
||
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hostnames: []string{"a"},
|
||
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privateIPs: []net.IP{nodes["a"].InternalIP.IP},
|
||
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wireGuardIP: w1,
|
||
|
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},
|
||
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{
|
||
|
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AllowedIPs: allowedIPs(nodes["b"].Subnet.String(), "192.168.0.1/32", "10.4.0.2/32"),
|
||
|
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Endpoint: nodes["b"].ExternalIP.IP.String(),
|
||
|
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Key: string(nodes["b"].Key),
|
||
|
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Location: nodes["b"].Name,
|
||
|
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cidrs: []*net.IPNet{nodes["b"].Subnet},
|
||
|
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hostnames: []string{"b"},
|
||
|
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privateIPs: []net.IP{nodes["b"].InternalIP.IP},
|
||
|
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wireGuardIP: w2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
AllowedIPs: allowedIPs(nodes["c"].Subnet.String(), "192.168.0.2/32", "10.4.0.3/32"),
|
||
|
|
Endpoint: nodes["c"].ExternalIP.IP.String(),
|
||
|
|
Key: string(nodes["c"].Key),
|
||
|
|
Location: nodes["c"].Name,
|
||
|
|
cidrs: []*net.IPNet{nodes["c"].Subnet},
|
||
|
|
hostnames: []string{"c"},
|
||
|
|
privateIPs: []net.IP{nodes["c"].InternalIP.IP},
|
||
|
|
wireGuardIP: w3,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
} {
|
||
|
|
tc.result.Key = string(key)
|
||
|
|
tc.result.Port = port
|
||
|
|
topo, err := NewTopology(nodes, tc.granularity, tc.hostname, port, key, kiloNet)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("test case %q: failed to generate Topology: %v", tc.name, err)
|
||
|
|
}
|
||
|
|
if diff := pretty.Compare(topo, tc.result); diff != "" {
|
||
|
|
t.Errorf("test case %q: got diff: %v", tc.name, diff)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func mustTopo(t *testing.T, nodes map[string]*Node, granularity Granularity, hostname string, port int, key []byte, subnet *net.IPNet) *Topology {
|
||
|
|
topo, err := NewTopology(nodes, granularity, hostname, port, key, subnet)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("failed to generate Topology: %v", err)
|
||
|
|
}
|
||
|
|
return topo
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestRoutes(t *testing.T) {
|
||
|
|
nodes, key, port, kiloNet := setup(t)
|
||
|
|
kiloIface := 0
|
||
|
|
privIface := 1
|
||
|
|
pubIface := 2
|
||
|
|
mustTopoForGranularityAndHost := func(granularity Granularity, hostname string) *Topology {
|
||
|
|
return mustTopo(t, nodes, granularity, hostname, port, key, kiloNet)
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, tc := range []struct {
|
||
|
|
name string
|
||
|
|
local bool
|
||
|
|
topology *Topology
|
||
|
|
result []*netlink.Route
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
name: "datacenter from a",
|
||
|
|
topology: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["b"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].cidrs[1],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["c"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from b",
|
||
|
|
topology: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name).Segments[0].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from c",
|
||
|
|
topology: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name).Segments[0].wireGuardIP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name).Segments[0].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name).Segments[1].wireGuardIP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from a",
|
||
|
|
topology: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[1].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["b"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[2].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["c"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from b",
|
||
|
|
topology: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[0].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[2].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["c"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from c",
|
||
|
|
topology: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[0].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[1].cidrs[0],
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["b"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from a local",
|
||
|
|
local: true,
|
||
|
|
topology: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: nodes["b"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["b"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["c"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["c"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from b local",
|
||
|
|
local: true,
|
||
|
|
topology: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: nodes["a"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["c"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["c"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from c local",
|
||
|
|
local: true,
|
||
|
|
topology: mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name).Segments[0].wireGuardIP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["a"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(mustTopoForGranularityAndHost(DataCenterGranularity, nodes["c"].Name).Segments[1].wireGuardIP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["b"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: nodes["b"].InternalIP.IP,
|
||
|
|
LinkIndex: privIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from a local",
|
||
|
|
local: true,
|
||
|
|
topology: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: nodes["b"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["b"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["c"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["c"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["a"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from b local",
|
||
|
|
local: true,
|
||
|
|
topology: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: nodes["a"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["c"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["c"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["b"].Name).Segments[2].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from c local",
|
||
|
|
local: true,
|
||
|
|
topology: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name),
|
||
|
|
result: []*netlink.Route{
|
||
|
|
{
|
||
|
|
Dst: nodes["a"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["a"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[0].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: nodes["b"].Subnet,
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Dst: oneAddressCIDR(nodes["b"].InternalIP.IP),
|
||
|
|
Flags: int(netlink.FLAG_ONLINK),
|
||
|
|
Gw: mustTopoForGranularityAndHost(NodeGranularity, nodes["c"].Name).Segments[1].wireGuardIP,
|
||
|
|
LinkIndex: kiloIface,
|
||
|
|
Protocol: unix.RTPROT_STATIC,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
} {
|
||
|
|
routes := tc.topology.Routes(kiloIface, privIface, pubIface, tc.local, NeverEncapsulate)
|
||
|
|
if diff := pretty.Compare(routes, tc.result); diff != "" {
|
||
|
|
t.Errorf("test case %q: got diff: %v", tc.name, diff)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestConf(t *testing.T) {
|
||
|
|
nodes, key, port, kiloNet := setup(t)
|
||
|
|
for _, tc := range []struct {
|
||
|
|
name string
|
||
|
|
topology *Topology
|
||
|
|
result string
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
name: "datacenter from a",
|
||
|
|
topology: mustTopo(t, nodes, DataCenterGranularity, nodes["a"].Name, port, key, kiloNet),
|
||
|
|
result: `[Interface]
|
||
|
|
PrivateKey = private
|
||
|
|
ListenPort = 51820
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key2
|
||
|
|
Endpoint = 10.1.0.2:51820
|
||
|
|
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.2.3.0/24, 192.168.0.2/32, 10.4.0.2/32
|
||
|
|
`,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from b",
|
||
|
|
topology: mustTopo(t, nodes, DataCenterGranularity, nodes["b"].Name, port, key, kiloNet),
|
||
|
|
result: `[Interface]
|
||
|
|
PrivateKey = private
|
||
|
|
ListenPort = 51820
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key1
|
||
|
|
Endpoint = 10.1.0.1:51820
|
||
|
|
AllowedIPs = 10.2.1.0/24, 192.168.0.1/32, 10.4.0.1/32
|
||
|
|
`,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "datacenter from c",
|
||
|
|
topology: mustTopo(t, nodes, DataCenterGranularity, nodes["c"].Name, port, key, kiloNet),
|
||
|
|
result: `[Interface]
|
||
|
|
PrivateKey = private
|
||
|
|
ListenPort = 51820
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key1
|
||
|
|
Endpoint = 10.1.0.1:51820
|
||
|
|
AllowedIPs = 10.2.1.0/24, 192.168.0.1/32, 10.4.0.1/32
|
||
|
|
`,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from a",
|
||
|
|
topology: mustTopo(t, nodes, NodeGranularity, nodes["a"].Name, port, key, kiloNet),
|
||
|
|
result: `[Interface]
|
||
|
|
PrivateKey = private
|
||
|
|
ListenPort = 51820
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key2
|
||
|
|
Endpoint = 10.1.0.2:51820
|
||
|
|
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.4.0.2/32
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key3
|
||
|
|
Endpoint = 10.1.0.3:51820
|
||
|
|
AllowedIPs = 10.2.3.0/24, 192.168.0.2/32, 10.4.0.3/32
|
||
|
|
`,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from b",
|
||
|
|
topology: mustTopo(t, nodes, NodeGranularity, nodes["b"].Name, port, key, kiloNet),
|
||
|
|
result: `[Interface]
|
||
|
|
PrivateKey = private
|
||
|
|
ListenPort = 51820
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key1
|
||
|
|
Endpoint = 10.1.0.1:51820
|
||
|
|
AllowedIPs = 10.2.1.0/24, 192.168.0.1/32, 10.4.0.1/32
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key3
|
||
|
|
Endpoint = 10.1.0.3:51820
|
||
|
|
AllowedIPs = 10.2.3.0/24, 192.168.0.2/32, 10.4.0.3/32
|
||
|
|
`,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "node from c",
|
||
|
|
topology: mustTopo(t, nodes, NodeGranularity, nodes["c"].Name, port, key, kiloNet),
|
||
|
|
result: `[Interface]
|
||
|
|
PrivateKey = private
|
||
|
|
ListenPort = 51820
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key1
|
||
|
|
Endpoint = 10.1.0.1:51820
|
||
|
|
AllowedIPs = 10.2.1.0/24, 192.168.0.1/32, 10.4.0.1/32
|
||
|
|
|
||
|
|
[Peer]
|
||
|
|
PublicKey = key2
|
||
|
|
Endpoint = 10.1.0.2:51820
|
||
|
|
AllowedIPs = 10.2.2.0/24, 192.168.0.1/32, 10.4.0.2/32
|
||
|
|
`,
|
||
|
|
},
|
||
|
|
} {
|
||
|
|
conf, err := tc.topology.Conf()
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("test case %q: failed to generate conf: %v", tc.name, err)
|
||
|
|
}
|
||
|
|
if string(conf) != tc.result {
|
||
|
|
t.Errorf("test case %q: expected %s got %s", tc.name, tc.result, string(conf))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestFindLeader(t *testing.T) {
|
||
|
|
ip, e1, err := net.ParseCIDR("10.0.0.1/32")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("failed to parse external IP CIDR: %v", err)
|
||
|
|
}
|
||
|
|
e1.IP = ip
|
||
|
|
ip, e2, err := net.ParseCIDR("8.8.8.8/32")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("failed to parse external IP CIDR: %v", err)
|
||
|
|
}
|
||
|
|
e2.IP = ip
|
||
|
|
|
||
|
|
nodes := []*Node{
|
||
|
|
{
|
||
|
|
Name: "a",
|
||
|
|
ExternalIP: e1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Name: "b",
|
||
|
|
ExternalIP: e2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Name: "c",
|
||
|
|
ExternalIP: e2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Name: "d",
|
||
|
|
ExternalIP: e1,
|
||
|
|
Leader: true,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Name: "2",
|
||
|
|
ExternalIP: e2,
|
||
|
|
Leader: true,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
for _, tc := range []struct {
|
||
|
|
name string
|
||
|
|
nodes []*Node
|
||
|
|
out int
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
name: "nil",
|
||
|
|
nodes: nil,
|
||
|
|
out: 0,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "one",
|
||
|
|
nodes: []*Node{nodes[0]},
|
||
|
|
out: 0,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "non-leaders",
|
||
|
|
nodes: []*Node{nodes[0], nodes[1], nodes[2]},
|
||
|
|
out: 1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "leaders",
|
||
|
|
nodes: []*Node{nodes[3], nodes[4]},
|
||
|
|
out: 1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "public",
|
||
|
|
nodes: []*Node{nodes[1], nodes[2], nodes[4]},
|
||
|
|
out: 2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "private",
|
||
|
|
nodes: []*Node{nodes[0], nodes[3]},
|
||
|
|
out: 1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
name: "all",
|
||
|
|
nodes: nodes,
|
||
|
|
out: 4,
|
||
|
|
},
|
||
|
|
} {
|
||
|
|
l := findLeader(tc.nodes)
|
||
|
|
if l != tc.out {
|
||
|
|
t.Errorf("test case %q: expected %d got %d", tc.name, tc.out, l)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|