2022-04-01 16:16:46 +00:00
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package rcmgr
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import (
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"bytes"
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"sort"
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"strings"
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2022-11-04 13:57:20 +00:00
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"github.com/libp2p/go-libp2p/core/network"
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"github.com/libp2p/go-libp2p/core/peer"
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"github.com/libp2p/go-libp2p/core/protocol"
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2022-04-01 16:16:46 +00:00
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)
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// ResourceScopeLimiter is a trait interface that allows you to access scope limits.
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type ResourceScopeLimiter interface {
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Limit() Limit
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SetLimit(Limit)
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}
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var _ ResourceScopeLimiter = (*resourceScope)(nil)
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// ResourceManagerStat is a trait that allows you to access resource manager state.
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type ResourceManagerState interface {
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ListServices() []string
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ListProtocols() []protocol.ID
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ListPeers() []peer.ID
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Stat() ResourceManagerStat
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}
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type ResourceManagerStat struct {
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System network.ScopeStat
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Transient network.ScopeStat
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Services map[string]network.ScopeStat
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Protocols map[protocol.ID]network.ScopeStat
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Peers map[peer.ID]network.ScopeStat
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}
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var _ ResourceManagerState = (*resourceManager)(nil)
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func (s *resourceScope) Limit() Limit {
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s.Lock()
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defer s.Unlock()
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return s.rc.limit
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}
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func (s *resourceScope) SetLimit(limit Limit) {
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s.Lock()
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defer s.Unlock()
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s.rc.limit = limit
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}
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func (s *protocolScope) SetLimit(limit Limit) {
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s.rcmgr.setStickyProtocol(s.proto)
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s.resourceScope.SetLimit(limit)
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}
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func (s *peerScope) SetLimit(limit Limit) {
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s.rcmgr.setStickyPeer(s.peer)
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s.resourceScope.SetLimit(limit)
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}
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func (r *resourceManager) ListServices() []string {
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r.mx.Lock()
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defer r.mx.Unlock()
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result := make([]string, 0, len(r.svc))
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for svc := range r.svc {
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result = append(result, svc)
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}
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sort.Slice(result, func(i, j int) bool {
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return strings.Compare(result[i], result[j]) < 0
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})
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return result
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}
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func (r *resourceManager) ListProtocols() []protocol.ID {
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r.mx.Lock()
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defer r.mx.Unlock()
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result := make([]protocol.ID, 0, len(r.proto))
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for p := range r.proto {
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result = append(result, p)
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}
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sort.Slice(result, func(i, j int) bool {
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2023-02-22 21:58:17 +00:00
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return result[i] < result[j]
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2022-04-01 16:16:46 +00:00
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})
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return result
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}
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func (r *resourceManager) ListPeers() []peer.ID {
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r.mx.Lock()
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defer r.mx.Unlock()
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result := make([]peer.ID, 0, len(r.peer))
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for p := range r.peer {
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result = append(result, p)
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}
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sort.Slice(result, func(i, j int) bool {
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return bytes.Compare([]byte(result[i]), []byte(result[j])) < 0
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})
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return result
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}
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func (r *resourceManager) Stat() (result ResourceManagerStat) {
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r.mx.Lock()
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svcs := make([]*serviceScope, 0, len(r.svc))
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for _, svc := range r.svc {
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svcs = append(svcs, svc)
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}
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protos := make([]*protocolScope, 0, len(r.proto))
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for _, proto := range r.proto {
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protos = append(protos, proto)
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}
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peers := make([]*peerScope, 0, len(r.peer))
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for _, peer := range r.peer {
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peers = append(peers, peer)
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}
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r.mx.Unlock()
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// Note: there is no global lock, so the system is updating while we are dumping its state...
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// as such stats might not exactly add up to the system level; we take the system stat
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// last nonetheless so that this is the most up-to-date snapshot
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result.Peers = make(map[peer.ID]network.ScopeStat, len(peers))
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for _, peer := range peers {
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result.Peers[peer.peer] = peer.Stat()
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}
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result.Protocols = make(map[protocol.ID]network.ScopeStat, len(protos))
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for _, proto := range protos {
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result.Protocols[proto.proto] = proto.Stat()
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}
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result.Services = make(map[string]network.ScopeStat, len(svcs))
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for _, svc := range svcs {
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2022-08-19 16:34:07 +00:00
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result.Services[svc.service] = svc.Stat()
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2022-04-01 16:16:46 +00:00
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}
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result.Transient = r.transient.Stat()
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result.System = r.system.Stat()
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return result
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}
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