81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
// 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 main
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import (
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"fmt"
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"github.com/spf13/cobra"
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"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
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"github.com/squat/kilo/pkg/mesh"
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)
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func graph() *cobra.Command {
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return &cobra.Command{
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Use: "graph",
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Short: "Generates a graph of the Kilo network",
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RunE: runGraph,
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}
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}
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func runGraph(_ *cobra.Command, _ []string) error {
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ns, err := opts.backend.Nodes().List()
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if err != nil {
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return fmt.Errorf("failed to list nodes: %w", err)
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}
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ps, err := opts.backend.Peers().List()
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if err != nil {
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return fmt.Errorf("failed to list peers: %w", err)
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}
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// Obtain the Granularity by looking at the annotation of the first node.
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if opts.granularity, err = determineGranularity(opts.granularity, ns); err != nil {
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return fmt.Errorf("failed to determine granularity: %w", err)
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}
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var hostname string
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subnet := mesh.DefaultKiloSubnet
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nodes := make(map[string]*mesh.Node)
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for _, n := range ns {
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if n.Ready() {
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nodes[n.Name] = n
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hostname = n.Name
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}
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if n.WireGuardIP != nil {
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subnet = n.WireGuardIP
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}
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}
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subnet.IP = subnet.IP.Mask(subnet.Mask)
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if len(nodes) == 0 {
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return fmt.Errorf("did not find any valid Kilo nodes in the cluster")
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}
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peers := make(map[string]*mesh.Peer)
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for _, p := range ps {
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if p.Ready() {
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peers[p.Name] = p
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}
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}
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t, err := mesh.NewTopology(nodes, peers, opts.granularity, hostname, 0, wgtypes.Key{}, subnet, nodes[hostname].PersistentKeepalive, nil)
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if err != nil {
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return fmt.Errorf("failed to create topology: %w", err)
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}
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g, err := t.Dot()
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if err != nil {
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return fmt.Errorf("failed to generate graph: %w", err)
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}
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fmt.Println(g)
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return nil
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}
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