forked from TrueCloudLab/frostfs-node
97 lines
1.8 KiB
Go
97 lines
1.8 KiB
Go
package innerring
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import (
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"crypto/ecdsa"
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"sync"
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"time"
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"github.com/nspcc-dev/neofs-node/pkg/innerring/invoke"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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"github.com/pkg/errors"
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)
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type (
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innerRingIndexer struct {
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sync.RWMutex
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cli *client.Client
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key *ecdsa.PublicKey
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timeout time.Duration
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ind indexes
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lastAccess time.Time
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}
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indexes struct {
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innerRingIndex, innerRingSize int32
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alphabetIndex int32
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}
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)
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func newInnerRingIndexer(cli *client.Client, key *ecdsa.PublicKey, to time.Duration) *innerRingIndexer {
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return &innerRingIndexer{
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cli: cli,
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key: key,
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timeout: to,
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}
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}
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func (s *innerRingIndexer) update() (ind indexes, err error) {
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s.RLock()
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if time.Since(s.lastAccess) < s.timeout {
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s.RUnlock()
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return s.ind, nil
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}
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s.RUnlock()
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s.Lock()
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defer s.Unlock()
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if time.Since(s.lastAccess) < s.timeout {
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return s.ind, nil
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}
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s.ind.innerRingIndex, s.ind.innerRingSize, err = invoke.InnerRingIndex(s.cli, s.key)
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if err != nil {
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return indexes{}, err
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}
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s.ind.alphabetIndex, err = invoke.AlphabetIndex(s.cli, s.key)
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if err != nil {
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return indexes{}, err
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}
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s.lastAccess = time.Now()
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return s.ind, nil
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}
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func (s *innerRingIndexer) InnerRingIndex() (int32, error) {
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ind, err := s.update()
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if err != nil {
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return 0, errors.Wrap(err, "can't update index state")
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}
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return ind.innerRingIndex, nil
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}
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func (s *innerRingIndexer) InnerRingSize() (int32, error) {
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ind, err := s.update()
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if err != nil {
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return 0, errors.Wrap(err, "can't update index state")
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}
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return ind.innerRingSize, nil
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}
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func (s *innerRingIndexer) AlphabetIndex() (int32, error) {
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ind, err := s.update()
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if err != nil {
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return 0, errors.Wrap(err, "can't update index state")
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}
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return ind.alphabetIndex, nil
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}
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