func sendIndexTo(initial bool, minLocalVer uint64, conn protocol.Connection, repo string, fs *files.Set) (uint64, error) {
nodeID := conn.ID()
name := conn.Name()
batch := make([]protocol.FileInfo, 0, indexBatchSize)
currentBatchSize := 0
maxLocalVer := uint64(0)
var err error
fs.WithHave(protocol.LocalNodeID, func(fi protocol.FileIntf) bool {
f := fi.(protocol.FileInfo)
if f.LocalVersion <= minLocalVer {
return true
}
if f.LocalVersion > maxLocalVer {
maxLocalVer = f.LocalVersion
}
if len(batch) == indexBatchSize || currentBatchSize > indexTargetSize {
if initial {
if err = conn.Index(repo, batch); err != nil {
return false
}
if debug {
l.Debugf("sendIndexes for %s-%s/%q: %d files (<%d bytes) (initial index)", nodeID, name, repo, len(batch), currentBatchSize)
}
initial = false
} else {
if err = conn.IndexUpdate(repo, batch); err != nil {
return false
}
if debug {
l.Debugf("sendIndexes for %s-%s/%q: %d files (<%d bytes) (batched update)", nodeID, name, repo, len(batch), currentBatchSize)
}
}
batch = make([]protocol.FileInfo, 0, indexBatchSize)
currentBatchSize = 0
}
batch = append(batch, f)
currentBatchSize += indexPerFileSize + len(f.Blocks)*IndexPerBlockSize
return true
})
if initial && err == nil {
err = conn.Index(repo, batch)
if debug && err == nil {
l.Debugf("sendIndexes for %s-%s/%q: %d files (small initial index)", nodeID, name, repo, len(batch))
}
} else if len(batch) > 0 && err == nil {
err = conn.IndexUpdate(repo, batch)
if debug && err == nil {
l.Debugf("sendIndexes for %s-%s/%q: %d files (last batch)", nodeID, name, repo, len(batch))
}
}
return maxLocalVer, err
}
