mirror of
https://github.com/livekit/livekit.git
synced 2026-04-01 00:05:40 +00:00
a19ca69f5f
* Prevent stats update if the deltas are empty * increase force interval * static check * Change max delay to 30 seconds
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
package selector
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import (
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"sort"
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"time"
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"github.com/thoas/go-funk"
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"github.com/livekit/protocol/livekit"
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"github.com/livekit/livekit-server/pkg/config"
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)
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const AvailableSeconds = 5
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// checks if a node has been updated recently to be considered for selection
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func IsAvailable(node *livekit.Node) bool {
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if node.Stats == nil {
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// available till stats are available
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return true
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}
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delta := time.Now().Unix() - node.Stats.UpdatedAt
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return int(delta) < AvailableSeconds
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}
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func GetAvailableNodes(nodes []*livekit.Node) []*livekit.Node {
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return funk.Filter(nodes, func(node *livekit.Node) bool {
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return IsAvailable(node) && node.State == livekit.NodeState_SERVING
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}).([]*livekit.Node)
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}
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func GetNodeSysload(node *livekit.Node) float32 {
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stats := node.Stats
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numCpus := stats.NumCpus
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if numCpus == 0 {
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numCpus = 1
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}
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return stats.LoadAvgLast1Min / float32(numCpus)
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}
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// TODO: check remote node configured limit, instead of this node's config
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func LimitsReached(limitConfig config.LimitConfig, nodeStats *livekit.NodeStats) bool {
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if nodeStats == nil {
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return false
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}
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if limitConfig.NumTracks > 0 && limitConfig.NumTracks <= nodeStats.NumTracksIn+nodeStats.NumTracksOut {
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return true
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}
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if limitConfig.BytesPerSec > 0 && limitConfig.BytesPerSec <= nodeStats.BytesInPerSec+nodeStats.BytesOutPerSec {
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return true
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}
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return false
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}
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func SelectSortedNode(nodes []*livekit.Node, sortBy string) (*livekit.Node, error) {
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if sortBy == "" {
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return nil, ErrSortByNotSet
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}
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// Return a node based on what it should be sorted by for priority
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switch sortBy {
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case "random":
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idx := funk.RandomInt(0, len(nodes))
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return nodes[idx], nil
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case "sysload":
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sort.Slice(nodes, func(i, j int) bool {
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return GetNodeSysload(nodes[i]) < GetNodeSysload(nodes[j])
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})
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return nodes[0], nil
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case "cpuload":
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sort.Slice(nodes, func(i, j int) bool {
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return nodes[i].Stats.CpuLoad < nodes[j].Stats.CpuLoad
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})
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return nodes[0], nil
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case "rooms":
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sort.Slice(nodes, func(i, j int) bool {
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return nodes[i].Stats.NumRooms < nodes[j].Stats.NumRooms
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})
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return nodes[0], nil
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case "clients":
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sort.Slice(nodes, func(i, j int) bool {
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return nodes[i].Stats.NumClients < nodes[j].Stats.NumClients
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})
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return nodes[0], nil
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case "tracks":
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sort.Slice(nodes, func(i, j int) bool {
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return nodes[i].Stats.NumTracksIn+nodes[i].Stats.NumTracksOut < nodes[j].Stats.NumTracksIn+nodes[j].Stats.NumTracksOut
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})
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return nodes[0], nil
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case "bytespersec":
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sort.Slice(nodes, func(i, j int) bool {
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return nodes[i].Stats.BytesInPerSec+nodes[i].Stats.BytesOutPerSec < nodes[j].Stats.BytesInPerSec+nodes[j].Stats.BytesOutPerSec
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})
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return nodes[0], nil
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default:
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return nil, ErrSortByUnknown
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}
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}
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