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IDs are a lot smaller, hence quicker to manage. Any time we want to refer back to the full node we look it up in its topology. (This relies on nobody trying to store a rendered node as a child).
37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
package utils
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import (
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"strings"
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"time"
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"github.com/weaveworks/scope/report"
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)
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// Prune returns a copy of the Nodes with all information not strictly
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// necessary for rendering nodes and edges in the UI cut away.
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func Prune(nodes report.Nodes) report.Nodes {
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result := report.Nodes{}
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for id, node := range nodes {
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result[id] = PruneNode(node)
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}
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return result
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}
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// PruneNode returns a copy of the Node with all information not strictly
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// necessary for rendering nodes and edges stripped away. Specifically, that
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// means cutting out parts of the Node.
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func PruneNode(node report.Node) report.Node {
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prunedNode := report.MakeNode(
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node.ID).
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WithTopology(node.Topology).
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WithAdjacent(node.Adjacency...).
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WithChildren(node.ChildIDs)
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// Copy counters across, but with zero timestamp so they compare equal
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node.Latest.ForEach(func(k string, _ time.Time, v string) {
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if strings.HasPrefix(k, report.CounterPrefix) {
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prunedNode.Latest = prunedNode.Latest.Set(k, time.Time{}, v)
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}
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})
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return prunedNode
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}
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