691 lines
15 KiB
Go
691 lines
15 KiB
Go
package worker
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import (
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"fmt"
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"sync"
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qb "gordenko.dev/dima/qb"
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"gordenko.dev/dima/qb/atree"
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"gordenko.dev/dima/qb/enc"
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"gordenko.dev/dima/qb/inbox"
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"gordenko.dev/dima/qb/proto"
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"gordenko.dev/dima/qb/storage"
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"gordenko.dev/dima/qb/transform"
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)
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// AddMetric - create metric in map and set Xlock, rwad - append to queue
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// DeleteMetric - set Xlock
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// DeleteSince - xLock (тупо редкая операция)
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// Якийсь прапор поставити для pendingDelete, щоб read операції вставали в чергу
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const (
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QueryDone = 1
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UntilFound = 2
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UntilNotFound = 3
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RangeFound = 15
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NoMeasures = 16
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NoMetric = 4
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MetricDuplicate = 5
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Succeed = 6
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NewPage = 7
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ExpiredMeasure = 8
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NonMonotonicValue = 9
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CanAppend = 10
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WrongMetricType = 11
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NoMeasuresToDelete = 12
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DeleteFromAtreeNotNeeded = 13
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DeleteFromAtreeRequired = 14
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)
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type Worker struct {
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inbox *inbox.Inbox
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storageInbox *inbox.Inbox
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dir string
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snapshotNumber int
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tmp []byte
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metrics map[uint32]*Metric
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exitCh chan struct{}
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waitGroup *sync.WaitGroup
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}
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type Options struct {
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Inbox *inbox.Inbox
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StorageInbox *inbox.Inbox
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ReplayMetrics map[uint32]*storage.ReplayMetric
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Dir string
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ExitCh chan struct{}
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WaitGroup *sync.WaitGroup
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}
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func New(opt Options) *Worker {
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s := &Worker{
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inbox: opt.Inbox,
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storageInbox: opt.StorageInbox,
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dir: opt.Dir,
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tmp: make([]byte, 26),
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metrics: make(map[uint32]*Metric),
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exitCh: opt.ExitCh,
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waitGroup: opt.WaitGroup,
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}
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for metricID, x := range opt.ReplayMetrics {
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databuf := x.Buf[:storage.DataPagePayloadSize]
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values := enc.NewValueDeltaCompressor(x.MetricType, x.FracDigits, databuf, x.ValuesSize)
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s.metrics[metricID] = &Metric{
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metricType: x.MetricType,
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fracDigits: x.FracDigits,
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lastPageNo: x.LastPageNo,
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lastValue: values.LastValue(),
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buffer: x.Buf,
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timestamps: enc.NewTimeDeltaCompressor(databuf, x.TimestampsSize),
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values: values,
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indexLevelTails: x.IndexLevelTails,
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}
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}
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return s
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}
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func (s *Worker) ReleaseRLock(metricID uint32) {
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// s.mutex.Lock()
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// //s.rLocksToRelease = append(s.rLocksToRelease, metricID)
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// s.mutex.Unlock()
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// select {
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// case s.signalCh <- struct{}{}:
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// default:
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// }
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}
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func (s *Worker) Run() {
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for {
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select {
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case <-s.inbox.Ready():
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s.doWork()
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case <-s.exitCh:
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fmt.Println("worker done")
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s.waitGroup.Done()
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return
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}
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}
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}
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func (s *Worker) doWork() {
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queue := s.inbox.Drain()
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//rLocksToRelease := s.rLocksToRelease
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//s.rLocksToRelease = nil
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// for _, metricID := range rLocksToRelease {
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// metric, ok := s.metrics[metricID]
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// if !ok {
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// qb.Abort(qb.NoMetricBug,
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// fmt.Errorf("drainQueues: metric %d not found", metricID))
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// }
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// if metric.XLock {
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// qb.Abort(qb.XLockBug,
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// fmt.Errorf("drainQueues: xlock is set for the metric %d",
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// metricID))
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// }
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// if metric.RLocks <= 0 {
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// qb.Abort(qb.NoRLockBug,
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// fmt.Errorf("drainQueues: rlock not set for the metric %d",
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// metricID))
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// }
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// metric.RLocks--
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// if len(metric.WaitQueue) > 0 {
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// s.processMetricQueue(metricID, metric)
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// }
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// }
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for _, untyped := range queue {
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switch req := untyped.(type) {
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case AppendMeasuresReq:
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s.AppendMeasures(req)
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case storage.Changes:
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s.applyCommits(req) // all metrics only
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case ListCurrentValuesReq:
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s.tryListCurrentValues(req) // all metrics only
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case RangeScanReq:
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s.RangeScan(req)
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case FullScanReq:
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s.tryFullScan(req)
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case AddMetricReq:
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s.AddMetric(req)
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case DeleteMetricReq:
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s.DeleteMetric(req)
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case DeleteMeasuresReq:
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s.DeleteMeasures(req)
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case GetMetricReq:
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s.GetMetric(req)
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default:
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qb.Abort(qb.UnknownWorkerQueueItemBug,
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fmt.Errorf("bug: unknown worker queue item type %T", req))
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}
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}
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}
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// суть у тому що треба запускати запити, пока не зустріну XLock
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func (s *Worker) processMetricQueue(metricID uint32, metric *Metric, tmp []byte) {
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if len(metric.WaitQueue) == 0 {
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return
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}
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for _, untyped := range metric.WaitQueue {
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switch req := untyped.(type) {
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case RangeScanReq:
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metric.StartRangeScan(req)
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case FullScanReq:
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metric.StartFullScan(req)
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case GetMetricReq:
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s.GetMetric(req)
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case AppendMeasuresReq:
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metric.StartAppendMeasures(req, tmp, s.storageInbox)
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case DeleteMetricReq:
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s.startDeleteMetric(metric, req)
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case DeleteMeasuresReq:
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s.startDeleteMeasures(metric, req)
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default:
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qb.Abort(qb.UnknownMetricWaitQueueItemBug,
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fmt.Errorf("bug: unknown metric wait queue item type %T", req))
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}
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}
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}
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type AddMetricReq struct {
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MetricID uint32
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ResultCh chan byte
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}
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func (s *Worker) AddMetric(req AddMetricReq) {
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_, ok := s.metrics[req.MetricID]
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if ok {
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req.ResultCh <- MetricDuplicate
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return
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}
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fmt.Println("metric not found. Success")
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req.ResultCh <- Succeed // new
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// lockEntry, ok := s.metricLockEntries[req.MetricID]
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// if ok {
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// lockEntry.WaitQueue = append(lockEntry.WaitQueue, req)
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// } else {
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// s.metricLockEntries[req.MetricID] = &metricLockEntry{
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// XLock: true,
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// }
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// req.ResultCh <- Succeed
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// }
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}
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func (s *Worker) processTryAddMetricReqsImmediatelyAfterDelete(reqs []AddMetricReq) {
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if len(reqs) == 0 {
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return
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}
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var (
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req = reqs[0]
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waitQueue []any
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)
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if len(reqs) > 1 {
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for _, req := range reqs[1:] {
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waitQueue = append(waitQueue, req)
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}
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}
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// FIX
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// s.metricLockEntries[req.MetricID] = &metricLockEntry{
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// XLock: true,
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// WaitQueue: waitQueue,
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// }
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req.ResultCh <- Succeed
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}
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type GetMetricResult struct {
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MetricType qb.MetricType
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FracDigits byte
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ResultCode byte
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}
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type GetMetricReq struct {
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MetricID uint32
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ResultCh chan GetMetricResult
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}
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func (s *Worker) GetMetric(req GetMetricReq) {
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metric, ok := s.metrics[req.MetricID]
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if ok {
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req.ResultCh <- GetMetricResult{
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ResultCode: Succeed,
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MetricType: metric.MetricType(),
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FracDigits: metric.FracDigits(),
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}
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} else {
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req.ResultCh <- GetMetricResult{
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ResultCode: NoMetric,
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}
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}
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}
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type DeleteMetricResult struct {
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ResultCode byte
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RootPageNo uint32
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}
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type DeleteMetricReq struct {
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MetricID uint32
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ResultCh chan DeleteMetricResult
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}
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func (s *Worker) DeleteMetric(req DeleteMetricReq) {
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// FIX
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// metric, ok := s.metrics[req.MetricID]
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// if !ok {
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// req.ResultCh <- tryDeleteMetricResult{
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// ResultCode: NoMetric,
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// }
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// return
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// }
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// lockEntry, ok := s.metricLockEntries[req.MetricID]
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// if ok {
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// lockEntry.WaitQueue = append(lockEntry.WaitQueue, req)
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// } else {
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// s.startDeleteMetric(metric, req)
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// }
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}
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func (s *Worker) startDeleteMetric(metric *Metric, req DeleteMetricReq) {
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// FIX
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// s.metricLockEntries[req.MetricID] = &metricLockEntry{
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// XLock: true,
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// }
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// req.ResultCh <- tryDeleteMetricResult{
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// ResultCode: Succeed,
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// RootPageNo: metric.RootPageNo,
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// }
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}
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type DeleteMeasuresResult struct {
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ResultCode byte
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RootPageNo uint32
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}
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type DeleteMeasuresReq struct {
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MetricID uint32
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Since uint32
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ResultCh chan DeleteMeasuresResult
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}
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func (s *Worker) DeleteMeasures(req DeleteMeasuresReq) {
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// FIX
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// metric, ok := s.metrics[req.MetricID]
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// if !ok {
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// req.ResultCh <- tryDeleteMeasuresResult{
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// ResultCode: NoMetric,
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// }
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// return
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// }
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// if metric.Since == 0 || (req.Since > 0 && metric.Until < req.Since) {
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// req.ResultCh <- tryDeleteMeasuresResult{
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// ResultCode: NoMeasuresToDelete,
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// }
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// }
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// lockEntry, ok := s.metricLockEntries[req.MetricID]
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// if ok {
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// lockEntry.WaitQueue = append(lockEntry.WaitQueue, req)
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// } else {
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// s.startDeleteMeasures(metric, req)
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// }
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}
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func (s *Worker) startDeleteMeasures(metric *Metric, req DeleteMeasuresReq) {
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// FIX
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// s.metricLockEntries[req.MetricID] = &metricLockEntry{
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// XLock: true,
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// }
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// if metric.RootPageNo > 0 {
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// req.ResultCh <- tryDeleteMeasuresResult{
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// ResultCode: DeleteFromAtreeRequired,
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// RootPageNo: metric.RootPageNo,
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// }
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// } else {
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// req.ResultCh <- tryDeleteMeasuresResult{
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// ResultCode: DeleteFromAtreeNotNeeded,
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// }
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// }
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}
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func (s *Worker) onMeasuresAppendCommited(rec storage.MeasuresAppendCommited) {
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metric, ok := s.metrics[rec.MetricID]
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if !ok {
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qb.Abort(qb.NoMetricBug,
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fmt.Errorf("finAppendMeasures: metric %d not found",
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rec.MetricID))
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}
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metric.OnMeasuresAppendCommited(rec)
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}
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func (s *Worker) onMeasuresAppendWithGrowCommited(rec storage.MeasuresAppendWithGrowCommited) {
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metric, ok := s.metrics[rec.MetricID]
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if !ok {
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qb.Abort(qb.NoMetricBug,
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fmt.Errorf("finAppendMeasures: metric %d not found",
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rec.MetricID))
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}
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metric.OnMeasuresAppendWithGrowCommited(rec)
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}
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type AppendMeasuresResult struct {
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ResultCode byte
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Written int
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}
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type AppendMeasuresReq struct {
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MetricID uint32
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Measures []proto.Measure
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ResultCh chan AppendMeasuresResult
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}
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func (s *Worker) AppendMeasures(req AppendMeasuresReq) {
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metric, ok := s.metrics[req.MetricID]
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if !ok {
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req.ResultCh <- AppendMeasuresResult{
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ResultCode: NoMetric,
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}
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return
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}
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if metric.XLock {
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metric.WaitQueue = append(metric.WaitQueue, req)
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return
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}
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metric.StartAppendMeasures(req, s.tmp, s.storageInbox)
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}
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type RangeScanResult struct {
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ResultCode byte
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FracDigits byte
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RootPageNo uint32
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LastPageNo uint32
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}
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type RangeScanReq struct {
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MetricID uint32
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Since uint32
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Until uint32
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MetricType qb.MetricType
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ResponseWriter atree.WorkerMeasureConsumer
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ResultCh chan RangeScanResult
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}
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func (s *Worker) RangeScan(req RangeScanReq) {
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metric, ok := s.metrics[req.MetricID]
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if !ok {
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req.ResultCh <- RangeScanResult{
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ResultCode: NoMetric,
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}
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return
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}
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if metric.MetricType() != req.MetricType {
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req.ResultCh <- RangeScanResult{
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ResultCode: WrongMetricType,
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}
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return
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}
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if metric.XLock {
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metric.WaitQueue = append(metric.WaitQueue, req)
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return
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}
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metric.StartRangeScan(req)
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}
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type FullScanResult struct {
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ResultCode byte
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FracDigits byte
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LastPageNo uint32
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}
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type FullScanReq struct {
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MetricID uint32
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MetricType qb.MetricType
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ResponseWriter atree.WorkerMeasureConsumer
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ResultCh chan FullScanResult
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}
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func (s *Worker) tryFullScan(req FullScanReq) {
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metric, ok := s.metrics[req.MetricID]
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if !ok {
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req.ResultCh <- FullScanResult{
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ResultCode: NoMetric,
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}
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return
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}
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if metric.MetricType() != req.MetricType {
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req.ResultCh <- FullScanResult{
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ResultCode: WrongMetricType,
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}
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return
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}
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if metric.XLock {
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metric.WaitQueue = append(metric.WaitQueue, req)
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return
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}
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metric.StartFullScan(req)
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}
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type ListCurrentValuesReq struct {
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MetricIDs []uint32
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ResponseWriter *transform.CurrentValueWriter
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ResultCh chan struct{}
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}
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func (s *Worker) tryListCurrentValues(req ListCurrentValuesReq) {
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for _, metricID := range req.MetricIDs {
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metric, ok := s.metrics[metricID]
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if ok {
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req.ResponseWriter.BufferValue(transform.CurrentValue{
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MetricID: metricID,
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Timestamp: metric.LastTimestamp(),
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Value: metric.LastValue(),
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})
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}
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}
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req.ResultCh <- struct{}{}
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}
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///////////////////////////////////////////////////////
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func (s *Worker) applyCommits(req storage.Changes) {
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for _, untyped := range req.Commits {
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switch rec := untyped.(type) {
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case storage.MetricAddCommited:
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s.onMetricAddCommited(rec)
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case storage.MetricDeleteCommited:
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s.onMetricDeleteCommited(rec)
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case storage.MeasuresAppendCommited:
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s.onMeasuresAppendCommited(rec)
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case storage.MeasuresAppendWithGrowCommited:
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s.onMeasuresAppendWithGrowCommited(rec)
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case storage.MeasuresDeleteCommited:
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s.onMeasuresDeleteCommited(rec)
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}
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}
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if req.SnapshotNumberCh != nil {
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s.snapshotNumber++
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err := WriteSnapshot(WriteSnapshotIn{
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SnapshotNumber: s.snapshotNumber,
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Dir: s.dir,
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WriteBufferSize: 4 * 1024 * 1024, // 1mb
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Metrics: s.metrics,
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FrozenIndexPagesCount: req.FrozenIndexPagesCount,
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IndexPageNumbers: req.IndexPageNumbers,
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FrozenDataPagesCount: req.FrozenDataPagesCount,
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DataPageNumbers: req.DataPageNumbers,
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})
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if err != nil {
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qb.Abort(qb.WriteSnapshotFailed, err)
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}
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req.SnapshotNumberCh <- s.snapshotNumber
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}
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}
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func (s *Worker) onMetricAddCommited(rec storage.MetricAddCommited) {
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// fix lock
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_, ok := s.metrics[rec.MetricID]
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if ok {
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qb.Abort(qb.MetricAddedBug,
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fmt.Errorf("addMetric: metric %d already added",
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rec.MetricID))
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}
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// if !lockEntry.XLock {
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// qb.Abort(qb.NoXLockBug,
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// fmt.Errorf("addMetric: xlock not set for the metric %d",
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// rec.MetricID))
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// }
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// lockEntry.XLock = false
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// delete(s.metricLockEntries, rec.MetricID)
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}
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func (s *Worker) addMetric(rec storage.MetricAddRecord) {
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var (
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buf = make([]byte, storage.DataPageSize)
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databuf = buf[:storage.DataPagePayloadSize]
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)
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s.metrics[rec.MetricID] = &Metric{
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metricType: rec.MetricType,
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fracDigits: rec.FracDigits,
|
||
buffer: buf,
|
||
timestamps: enc.NewTimeDeltaCompressor(databuf, 0),
|
||
values: enc.NewValueDeltaCompressor(rec.MetricType, rec.FracDigits, databuf, 0),
|
||
}
|
||
}
|
||
|
||
func (s *Worker) onMetricDeleteCommited(rec storage.MetricDeleteCommited) {
|
||
metric, ok := s.metrics[rec.MetricID]
|
||
if !ok {
|
||
qb.Abort(qb.NoMetricBug,
|
||
fmt.Errorf("deleteMetric: metric %d not found",
|
||
rec.MetricID))
|
||
}
|
||
|
||
if !metric.XLock {
|
||
qb.Abort(qb.NoXLockBug,
|
||
fmt.Errorf("deleteMetric: xlock not set for the metric %d",
|
||
rec.MetricID))
|
||
}
|
||
|
||
var addMetricReqs []AddMetricReq
|
||
|
||
if len(metric.WaitQueue) > 0 {
|
||
for _, untyped := range metric.WaitQueue {
|
||
switch req := untyped.(type) {
|
||
// case tryAppendMeasureReq:
|
||
// req.ResultCh <- tryAppendMeasureResult{
|
||
// MetricID: req.MetricID,
|
||
// ResultCode: NoMetric,
|
||
// }
|
||
|
||
case RangeScanReq:
|
||
req.ResultCh <- RangeScanResult{
|
||
ResultCode: NoMetric,
|
||
}
|
||
|
||
case FullScanReq:
|
||
req.ResultCh <- FullScanResult{
|
||
ResultCode: NoMetric,
|
||
}
|
||
|
||
case AddMetricReq:
|
||
addMetricReqs = append(addMetricReqs, req)
|
||
|
||
case DeleteMetricReq:
|
||
req.ResultCh <- DeleteMetricResult{
|
||
ResultCode: NoMetric,
|
||
}
|
||
|
||
case DeleteMeasuresReq:
|
||
req.ResultCh <- DeleteMeasuresResult{
|
||
ResultCode: NoMetric,
|
||
}
|
||
|
||
case GetMetricReq:
|
||
req.ResultCh <- GetMetricResult{
|
||
ResultCode: NoMetric,
|
||
}
|
||
|
||
default:
|
||
qb.Abort(qb.UnknownMetricWaitQueueItemBug,
|
||
fmt.Errorf("bug: unknown metric wait queue item type %T", req))
|
||
}
|
||
}
|
||
}
|
||
delete(s.metrics, rec.MetricID)
|
||
|
||
// ADD in storage
|
||
// if len(rec.FreePageNumbers) > 0 {
|
||
// s.freeList.AddPages(rec.FreePageNumbers)
|
||
// }
|
||
|
||
if len(addMetricReqs) > 0 {
|
||
s.processTryAddMetricReqsImmediatelyAfterDelete(addMetricReqs)
|
||
}
|
||
}
|
||
|
||
func (s *Worker) onMeasuresDeleteCommited(rec storage.MeasuresDeleteCommited) {
|
||
metric, ok := s.metrics[rec.MetricID]
|
||
if !ok {
|
||
qb.Abort(qb.NoMetricBug,
|
||
fmt.Errorf("deleteMeasures: metric %d not found",
|
||
rec.MetricID))
|
||
}
|
||
|
||
if !metric.XLock {
|
||
qb.Abort(qb.NoXLockBug,
|
||
fmt.Errorf("deleteMeasures: xlock not set for the metric %d",
|
||
rec.MetricID))
|
||
}
|
||
metric.OnMeasuresDeleteCommited(rec)
|
||
metric.XLock = false
|
||
// FIX add in storage
|
||
// if len(rec.FreePageNumbers) > 0 {
|
||
// s.freeList.AddPages(rec.FreePageNumbers)
|
||
// }
|
||
//s.doAfterReleaseXLock(rec.MetricID, metric)
|
||
}
|
||
|
||
// func (s *Database) doAfterReleaseXLock(metricID uint32, metric *_metric) {
|
||
// if len(metric.WaitQueue) > 0 {
|
||
// s.processMetricQueue(metricID, metric)
|
||
// }
|
||
// }
|