// Lookup looks up packets that match a given query within the files owned by a
// single stenotype thread.
func (t *Thread) Lookup(ctx context.Context, q query.Query) *base.PacketChan {
t.mu.RLock()
inputs := make(chan *base.PacketChan, concurrentBlockfileReadsPerThread)
out := base.ConcatPacketChans(ctx, inputs)
var files []*blockfile.BlockFile
for _, file := range t.getSortedFiles() {
files = append(files, t.files[file])
}
t.mu.RUnlock()
go func() {
defer func() {
close(inputs)
<-out.Done()
}()
for _, file := range files {
packets := base.NewPacketChan(100)
select {
case inputs <- packets:
go file.Lookup(ctx, q, packets)
case <-ctx.Done():
return
}
}
}()
return out
}
// AllPackets returns a packet channel to which all packets in the blockfile are
// sent.
func (b *BlockFile) AllPackets() *base.PacketChan {
b.mu.RLock()
c := base.NewPacketChan(100)
go func() {
defer b.mu.RUnlock()
pkts := &allPacketsIter{BlockFile: b}
for pkts.Next() {
c.Send(pkts.Packet())
}
c.Close(pkts.Err())
}()
return c
}