forked from TrueCloudLab/frostfs-node
134 lines
2.2 KiB
Go
134 lines
2.2 KiB
Go
package daughters
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import (
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"sync"
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"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
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)
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// Put saves daughter peer's trust to its provider for the epoch.
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func (x *Storage) Put(epoch uint64, trust reputation.Trust) {
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var s *daughterStorage
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x.mtx.Lock()
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{
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s = x.mItems[epoch]
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if s == nil {
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s = &daughterStorage{
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mItems: make(map[reputation.PeerID]*DaughterTrusts, 1),
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}
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x.mItems[epoch] = s
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}
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}
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x.mtx.Unlock()
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s.put(trust)
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}
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// DaughterTrusts returns daughter trusts for the epoch.
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//
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// Returns false if there is no data for the epoch and daughter.
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func (x *Storage) DaughterTrusts(epoch uint64, daughter reputation.PeerID) (*DaughterTrusts, bool) {
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var (
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s *daughterStorage
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ok bool
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)
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x.mtx.RLock()
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{
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s, ok = x.mItems[epoch]
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}
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x.mtx.RUnlock()
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if !ok {
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return nil, false
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}
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return s.daughterTrusts(daughter)
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}
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// maps IDs of daughter peers to repositories of the local trusts to their providers.
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type daughterStorage struct {
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mtx sync.RWMutex
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mItems map[reputation.PeerID]*DaughterTrusts
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}
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func (x *daughterStorage) put(trust reputation.Trust) {
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var dt *DaughterTrusts
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x.mtx.Lock()
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{
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trusting := trust.TrustingPeer()
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dt = x.mItems[trusting]
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if dt == nil {
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dt = &DaughterTrusts{
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mItems: make(map[reputation.PeerID]reputation.Trust, 1),
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}
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x.mItems[trusting] = dt
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}
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}
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x.mtx.Unlock()
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dt.put(trust)
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}
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func (x *daughterStorage) daughterTrusts(id reputation.PeerID) (dt *DaughterTrusts, ok bool) {
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x.mtx.RLock()
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{
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dt, ok = x.mItems[id]
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}
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x.mtx.RUnlock()
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return
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}
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// DaughterTrusts represents in-memory storage of local trusts
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// of the daughter peer to its providers.
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//
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// Maps IDs of daughter's providers to the local trusts to them.
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type DaughterTrusts struct {
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mtx sync.RWMutex
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mItems map[reputation.PeerID]reputation.Trust
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}
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func (x *DaughterTrusts) put(trust reputation.Trust) {
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x.mtx.Lock()
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{
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x.mItems[trust.Peer()] = trust
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}
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x.mtx.Unlock()
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}
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// Iterate passes all stored trusts to h.
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//
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// Returns errors from h directly.
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func (x *DaughterTrusts) Iterate(h reputation.TrustHandler) (err error) {
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x.mtx.RLock()
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{
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for _, trust := range x.mItems {
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if err = h(trust); err != nil {
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break
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}
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}
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}
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x.mtx.RUnlock()
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return
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}
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