143 lines
2.9 KiB
Go
143 lines
2.9 KiB
Go
// +build dev
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package wtdb
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import (
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"sync"
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"github.com/lightningnetwork/lnd/chainntnfs"
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)
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type MockDB struct {
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mu sync.Mutex
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lastEpoch *chainntnfs.BlockEpoch
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sessions map[SessionID]*SessionInfo
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blobs map[BreachHint]map[SessionID]*SessionStateUpdate
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}
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func NewMockDB() *MockDB {
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return &MockDB{
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sessions: make(map[SessionID]*SessionInfo),
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blobs: make(map[BreachHint]map[SessionID]*SessionStateUpdate),
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}
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}
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func (db *MockDB) InsertStateUpdate(update *SessionStateUpdate) (uint16, error) {
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db.mu.Lock()
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defer db.mu.Unlock()
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info, ok := db.sessions[update.ID]
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if !ok {
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return 0, ErrSessionNotFound
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}
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err := info.AcceptUpdateSequence(update.SeqNum, update.LastApplied)
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if err != nil {
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return info.LastApplied, err
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}
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sessionsToUpdates, ok := db.blobs[update.Hint]
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if !ok {
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sessionsToUpdates = make(map[SessionID]*SessionStateUpdate)
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db.blobs[update.Hint] = sessionsToUpdates
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}
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sessionsToUpdates[update.ID] = update
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return info.LastApplied, nil
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}
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func (db *MockDB) GetSessionInfo(id *SessionID) (*SessionInfo, error) {
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db.mu.Lock()
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defer db.mu.Unlock()
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if info, ok := db.sessions[*id]; ok {
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return info, nil
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}
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return nil, ErrSessionNotFound
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}
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func (db *MockDB) InsertSessionInfo(info *SessionInfo) error {
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db.mu.Lock()
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defer db.mu.Unlock()
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dbInfo, ok := db.sessions[info.ID]
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if ok && dbInfo.LastApplied > 0 {
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return ErrSessionAlreadyExists
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}
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db.sessions[info.ID] = info
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return nil
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}
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func (db *MockDB) DeleteSession(target SessionID) error {
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db.mu.Lock()
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defer db.mu.Unlock()
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// Fail if the session doesn't exit.
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if _, ok := db.sessions[target]; !ok {
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return ErrSessionNotFound
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}
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// Remove the target session.
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delete(db.sessions, target)
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// Remove the state updates for any blobs stored under the target
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// session identifier.
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for hint, sessionUpdates := range db.blobs {
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delete(sessionUpdates, target)
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//If this was the last state update, we can also remove the hint
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//that would map to an empty set.
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if len(sessionUpdates) == 0 {
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delete(db.blobs, hint)
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}
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}
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return nil
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}
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func (db *MockDB) GetLookoutTip() (*chainntnfs.BlockEpoch, error) {
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db.mu.Lock()
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defer db.mu.Unlock()
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return db.lastEpoch, nil
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}
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func (db *MockDB) QueryMatches(breachHints []BreachHint) ([]Match, error) {
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db.mu.Lock()
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defer db.mu.Unlock()
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var matches []Match
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for _, hint := range breachHints {
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sessionsToUpdates, ok := db.blobs[hint]
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if !ok {
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continue
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}
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for id, update := range sessionsToUpdates {
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info, ok := db.sessions[id]
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if !ok {
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panic("session not found")
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}
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match := Match{
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ID: id,
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SeqNum: update.SeqNum,
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Hint: hint,
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EncryptedBlob: update.EncryptedBlob,
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SessionInfo: info,
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}
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matches = append(matches, match)
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}
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}
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return matches, nil
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}
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func (db *MockDB) SetLookoutTip(epoch *chainntnfs.BlockEpoch) error {
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db.lastEpoch = epoch
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return nil
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}
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