mirror of
https://github.com/weaveworks/scope.git
synced 2026-03-03 10:11:03 +00:00
40 lines
889 B
Go
40 lines
889 B
Go
package render
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import (
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"net"
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"strings"
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"github.com/weaveworks/scope/probe/host"
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"github.com/weaveworks/scope/report"
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)
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// LocalNetworks returns a superset of the networks (think: CIDRs) that are
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// "local" from the perspective of each host represented in the report. It's
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// used to determine which nodes in the report are "remote", i.e. outside of
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// our infrastructure.
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func LocalNetworks(r report.Report) report.Networks {
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var (
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result = report.Networks{}
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networks = map[string]struct{}{}
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)
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for _, md := range r.Host.Nodes {
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val, ok := md.Metadata[host.LocalNetworks]
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if !ok {
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continue
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}
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for _, s := range strings.Fields(val) {
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_, ipNet, err := net.ParseCIDR(s)
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if err != nil {
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continue
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}
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_, ok := networks[ipNet.String()]
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if !ok {
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result = append(result, ipNet)
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networks[ipNet.String()] = struct{}{}
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}
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}
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}
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return result
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}
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