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databroker: store server version in backend (#2142)

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Caleb Doxsey 2021-04-28 09:12:52 -06:00 • committed by GitHub
parent 1b698053f6
commit 91c7dc742f
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15 changed files with 317 additions and 333 deletions
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16
pkg/storage/inmemory/stream.go
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@ -12,21 +12,21 @@ type recordStream struct {
ctx context.Context
backend *Backend
changed chan context.Context
ready []*databroker.Record
version uint64
changed chan context.Context
ready []*databroker.Record
recordVersion uint64
closeOnce sync.Once
closed chan struct{}
}
func newRecordStream(ctx context.Context, backend *Backend, version uint64) *recordStream {
func newRecordStream(ctx context.Context, backend *Backend, recordVersion uint64) *recordStream {
stream := &recordStream{
ctx: ctx,
backend: backend,
changed: backend.onChange.Bind(),
version: version,
changed: backend.onChange.Bind(),
recordVersion: recordVersion,
closed: make(chan struct{}),
}
@ -42,11 +42,11 @@ func newRecordStream(ctx context.Context, backend *Backend, version uint64) *rec
}
func (stream *recordStream) fill() {
stream.ready = stream.backend.getSince(stream.version)
stream.ready = stream.backend.getSince(stream.recordVersion)
if len(stream.ready) > 0 {
// records are sorted by version,
// so update the local version to the last record
stream.version = stream.ready[len(stream.ready)-1].GetVersion()
stream.recordVersion = stream.ready[len(stream.ready)-1].GetVersion()
}
}