mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 05:18:52 +08:00
4dbf4ade41
Signed-off-by: neza2017 <yefu.chen@zilliz.com>
111 lines
2.3 KiB
Go
111 lines
2.3 KiB
Go
package allocator
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import (
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"context"
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"log"
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"time"
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"github.com/zilliztech/milvus-distributed/internal/proto/internalpb"
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"github.com/zilliztech/milvus-distributed/internal/util/typeutil"
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)
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type Timestamp = typeutil.Timestamp
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const (
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tsCountPerRPC = 2 << 15
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)
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type TimestampAllocator struct {
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Allocator
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lastTsBegin Timestamp
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lastTsEnd Timestamp
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}
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func NewTimestampAllocator(ctx context.Context, masterAddr string) (*TimestampAllocator, error) {
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ctx1, cancel := context.WithCancel(ctx)
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a := &TimestampAllocator{
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Allocator: Allocator{reqs: make(chan request, maxConcurrentRequests),
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ctx: ctx1,
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cancel: cancel,
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masterAddress: masterAddr,
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countPerRPC: tsCountPerRPC,
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},
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}
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a.tChan = &ticker{
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updateInterval: time.Second,
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}
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a.Allocator.syncFunc = a.syncTs
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a.Allocator.processFunc = a.processFunc
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a.Allocator.checkFunc = a.checkFunc
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return a, nil
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}
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func (ta *TimestampAllocator) checkFunc(timeout bool) bool {
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if timeout {
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return true
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}
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need := uint32(0)
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for _, req := range ta.toDoReqs {
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iReq := req.(*tsoRequest)
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need += iReq.count
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}
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return ta.lastTsBegin+Timestamp(need) >= ta.lastTsEnd
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}
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func (ta *TimestampAllocator) syncTs() {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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req := &internalpb.TsoRequest{
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PeerID: 1,
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Role: internalpb.PeerRole_Proxy,
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Count: ta.countPerRPC,
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}
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resp, err := ta.masterClient.AllocTimestamp(ctx, req)
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cancel()
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if err != nil {
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log.Println("syncTimestamp Failed!!!!!")
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return
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}
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ta.lastTsBegin = resp.GetTimestamp()
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ta.lastTsEnd = ta.lastTsBegin + uint64(resp.GetCount())
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}
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func (ta *TimestampAllocator) processFunc(req request) error {
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tsoRequest := req.(*tsoRequest)
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tsoRequest.timestamp = ta.lastTsBegin
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ta.lastTsBegin++
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return nil
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}
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func (ta *TimestampAllocator) AllocOne() (Timestamp, error) {
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ret, err := ta.Alloc(1)
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if err != nil {
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return 0, err
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}
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return ret[0], nil
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}
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func (ta *TimestampAllocator) Alloc(count uint32) ([]Timestamp, error) {
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req := &tsoRequest{
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baseRequest: baseRequest{done: make(chan error), valid: false},
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}
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req.count = count
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ta.reqs <- req
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req.Wait()
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if !req.IsValid() {
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return nil, nil
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}
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start, count := req.timestamp, req.count
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var ret []Timestamp
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for i := uint32(0); i < count; i++ {
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ret = append(ret, start+uint64(i))
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}
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return ret, nil
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}
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func (ta *TimestampAllocator) ClearCache() {
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}
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