mirror of https://github.com/k3s-io/k3s
57 lines
1.5 KiB
Go
57 lines
1.5 KiB
Go
// Copyright 2017 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package mvcc
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import (
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"go.etcd.io/etcd/mvcc/mvccpb"
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"go.etcd.io/etcd/pkg/traceutil"
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)
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func (tw *watchableStoreTxnWrite) End() {
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changes := tw.Changes()
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if len(changes) == 0 {
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tw.TxnWrite.End()
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return
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}
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rev := tw.Rev() + 1
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evs := make([]mvccpb.Event, len(changes))
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for i, change := range changes {
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evs[i].Kv = &changes[i]
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if change.CreateRevision == 0 {
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evs[i].Type = mvccpb.DELETE
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evs[i].Kv.ModRevision = rev
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} else {
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evs[i].Type = mvccpb.PUT
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}
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}
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// end write txn under watchable store lock so the updates are visible
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// when asynchronous event posting checks the current store revision
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tw.s.mu.Lock()
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tw.s.notify(rev, evs)
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tw.TxnWrite.End()
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tw.s.mu.Unlock()
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}
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type watchableStoreTxnWrite struct {
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TxnWrite
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s *watchableStore
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}
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func (s *watchableStore) Write(trace *traceutil.Trace) TxnWrite {
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return &watchableStoreTxnWrite{s.store.Write(trace), s}
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}
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