684 lines
18 KiB
Go
684 lines
18 KiB
Go
package database
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"sort"
|
|
|
|
"github.com/dgraph-io/badger/v4"
|
|
"lol.mleku.dev/chk"
|
|
"lol.mleku.dev/log"
|
|
"next.orly.dev/pkg/database/indexes"
|
|
"next.orly.dev/pkg/database/indexes/types"
|
|
"next.orly.dev/pkg/encoders/event"
|
|
"next.orly.dev/pkg/encoders/ints"
|
|
"next.orly.dev/pkg/encoders/kind"
|
|
)
|
|
|
|
const (
|
|
currentVersion uint32 = 5
|
|
)
|
|
|
|
func (d *D) RunMigrations() {
|
|
var err error
|
|
var dbVersion uint32
|
|
// first find the current version tag if any
|
|
if err = d.View(
|
|
func(txn *badger.Txn) (err error) {
|
|
buf := new(bytes.Buffer)
|
|
if err = indexes.VersionEnc(nil).MarshalWrite(buf); chk.E(err) {
|
|
return
|
|
}
|
|
verPrf := new(bytes.Buffer)
|
|
if _, err = indexes.VersionPrefix.Write(verPrf); chk.E(err) {
|
|
return
|
|
}
|
|
it := txn.NewIterator(
|
|
badger.IteratorOptions{
|
|
Prefix: verPrf.Bytes(),
|
|
},
|
|
)
|
|
defer it.Close()
|
|
ver := indexes.VersionVars()
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
// there should only be one
|
|
item := it.Item()
|
|
key := item.Key()
|
|
if err = indexes.VersionDec(ver).UnmarshalRead(
|
|
bytes.NewBuffer(key),
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
log.I.F("found version tag: %d", ver.Get())
|
|
dbVersion = ver.Get()
|
|
}
|
|
return
|
|
},
|
|
); chk.E(err) {
|
|
}
|
|
if dbVersion == 0 {
|
|
// write the version tag now (ensure any old tags are removed first)
|
|
if err = d.writeVersionTag(currentVersion); chk.E(err) {
|
|
return
|
|
}
|
|
}
|
|
if dbVersion < 1 {
|
|
log.I.F("migrating to version 1...")
|
|
// the first migration is expiration tags
|
|
d.UpdateExpirationTags()
|
|
// bump to version 1
|
|
_ = d.writeVersionTag(1)
|
|
}
|
|
if dbVersion < 2 {
|
|
log.I.F("migrating to version 2...")
|
|
// backfill word indexes
|
|
d.UpdateWordIndexes()
|
|
// bump to version 2
|
|
_ = d.writeVersionTag(2)
|
|
}
|
|
if dbVersion < 3 {
|
|
log.I.F("migrating to version 3...")
|
|
// clean up ephemeral events that should never have been stored
|
|
d.CleanupEphemeralEvents()
|
|
// bump to version 3
|
|
_ = d.writeVersionTag(3)
|
|
}
|
|
if dbVersion < 4 {
|
|
log.I.F("migrating to version 4...")
|
|
// convert small events to inline storage (Reiser4 optimization)
|
|
d.ConvertSmallEventsToInline()
|
|
// bump to version 4
|
|
_ = d.writeVersionTag(4)
|
|
}
|
|
if dbVersion < 5 {
|
|
log.I.F("migrating to version 5...")
|
|
// re-encode events with optimized tag binary format (e/p tags)
|
|
d.ReencodeEventsWithOptimizedTags()
|
|
// bump to version 5
|
|
_ = d.writeVersionTag(5)
|
|
}
|
|
}
|
|
|
|
// writeVersionTag writes a new version tag key to the database (no value)
|
|
func (d *D) writeVersionTag(ver uint32) (err error) {
|
|
return d.Update(
|
|
func(txn *badger.Txn) (err error) {
|
|
// delete any existing version keys first (there should only be one, but be safe)
|
|
verPrf := new(bytes.Buffer)
|
|
if _, err = indexes.VersionPrefix.Write(verPrf); chk.E(err) {
|
|
return
|
|
}
|
|
it := txn.NewIterator(badger.IteratorOptions{Prefix: verPrf.Bytes()})
|
|
defer it.Close()
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
item := it.Item()
|
|
key := item.KeyCopy(nil)
|
|
if err = txn.Delete(key); chk.E(err) {
|
|
return
|
|
}
|
|
}
|
|
|
|
// now write the new version key
|
|
buf := new(bytes.Buffer)
|
|
vv := new(types.Uint32)
|
|
vv.Set(ver)
|
|
if err = indexes.VersionEnc(vv).MarshalWrite(buf); chk.E(err) {
|
|
return
|
|
}
|
|
return txn.Set(buf.Bytes(), nil)
|
|
},
|
|
)
|
|
}
|
|
|
|
func (d *D) UpdateWordIndexes() {
|
|
var err error
|
|
var wordIndexes [][]byte
|
|
// iterate all events and generate word index keys from content and tags
|
|
if err = d.View(
|
|
func(txn *badger.Txn) (err error) {
|
|
prf := new(bytes.Buffer)
|
|
if err = indexes.EventEnc(nil).MarshalWrite(prf); chk.E(err) {
|
|
return
|
|
}
|
|
it := txn.NewIterator(badger.IteratorOptions{Prefix: prf.Bytes()})
|
|
defer it.Close()
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
item := it.Item()
|
|
var val []byte
|
|
if val, err = item.ValueCopy(nil); chk.E(err) {
|
|
continue
|
|
}
|
|
// decode the event
|
|
ev := new(event.E)
|
|
if err = ev.UnmarshalBinary(bytes.NewBuffer(val)); chk.E(err) {
|
|
continue
|
|
}
|
|
// log.I.F("updating word indexes for event: %s", ev.Serialize())
|
|
// read serial from key
|
|
key := item.Key()
|
|
ser := indexes.EventVars()
|
|
if err = indexes.EventDec(ser).UnmarshalRead(bytes.NewBuffer(key)); chk.E(err) {
|
|
continue
|
|
}
|
|
// collect unique word hashes for this event
|
|
seen := make(map[string]struct{})
|
|
// from content
|
|
if len(ev.Content) > 0 {
|
|
for _, h := range TokenHashes(ev.Content) {
|
|
seen[string(h)] = struct{}{}
|
|
}
|
|
}
|
|
// from all tag fields (key and values)
|
|
if ev.Tags != nil && ev.Tags.Len() > 0 {
|
|
for _, t := range *ev.Tags {
|
|
for _, field := range t.T {
|
|
if len(field) == 0 {
|
|
continue
|
|
}
|
|
for _, h := range TokenHashes(field) {
|
|
seen[string(h)] = struct{}{}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// build keys
|
|
for k := range seen {
|
|
w := new(types.Word)
|
|
w.FromWord([]byte(k))
|
|
buf := new(bytes.Buffer)
|
|
if err = indexes.WordEnc(
|
|
w, ser,
|
|
).MarshalWrite(buf); chk.E(err) {
|
|
continue
|
|
}
|
|
wordIndexes = append(wordIndexes, buf.Bytes())
|
|
}
|
|
}
|
|
return
|
|
},
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
// sort the indexes for ordered writes
|
|
sort.Slice(
|
|
wordIndexes, func(i, j int) bool {
|
|
return bytes.Compare(
|
|
wordIndexes[i], wordIndexes[j],
|
|
) < 0
|
|
},
|
|
)
|
|
// write in a batch
|
|
batch := d.NewWriteBatch()
|
|
for _, v := range wordIndexes {
|
|
if err = batch.Set(v, nil); chk.E(err) {
|
|
continue
|
|
}
|
|
}
|
|
_ = batch.Flush()
|
|
}
|
|
|
|
func (d *D) UpdateExpirationTags() {
|
|
var err error
|
|
var expIndexes [][]byte
|
|
// iterate all event records and decode and look for version tags
|
|
if err = d.View(
|
|
func(txn *badger.Txn) (err error) {
|
|
prf := new(bytes.Buffer)
|
|
if err = indexes.EventEnc(nil).MarshalWrite(prf); chk.E(err) {
|
|
return
|
|
}
|
|
it := txn.NewIterator(badger.IteratorOptions{Prefix: prf.Bytes()})
|
|
defer it.Close()
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
item := it.Item()
|
|
var val []byte
|
|
if val, err = item.ValueCopy(nil); chk.E(err) {
|
|
continue
|
|
}
|
|
// decode the event
|
|
ev := new(event.E)
|
|
if err = ev.UnmarshalBinary(bytes.NewBuffer(val)); chk.E(err) {
|
|
continue
|
|
}
|
|
expTag := ev.Tags.GetFirst([]byte("expiration"))
|
|
if expTag == nil {
|
|
continue
|
|
}
|
|
expTS := ints.New(0)
|
|
if _, err = expTS.Unmarshal(expTag.Value()); chk.E(err) {
|
|
continue
|
|
}
|
|
key := item.Key()
|
|
ser := indexes.EventVars()
|
|
if err = indexes.EventDec(ser).UnmarshalRead(
|
|
bytes.NewBuffer(key),
|
|
); chk.E(err) {
|
|
continue
|
|
}
|
|
// create the expiration tag
|
|
exp, _ := indexes.ExpirationVars()
|
|
exp.Set(expTS.N)
|
|
expBuf := new(bytes.Buffer)
|
|
if err = indexes.ExpirationEnc(
|
|
exp, ser,
|
|
).MarshalWrite(expBuf); chk.E(err) {
|
|
continue
|
|
}
|
|
expIndexes = append(expIndexes, expBuf.Bytes())
|
|
}
|
|
return
|
|
},
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
// sort the indexes first so they're written in order, improving compaction
|
|
// and iteration.
|
|
sort.Slice(
|
|
expIndexes, func(i, j int) bool {
|
|
return bytes.Compare(expIndexes[i], expIndexes[j]) < 0
|
|
},
|
|
)
|
|
// write the collected indexes
|
|
batch := d.NewWriteBatch()
|
|
for _, v := range expIndexes {
|
|
if err = batch.Set(v, nil); chk.E(err) {
|
|
continue
|
|
}
|
|
}
|
|
if err = batch.Flush(); chk.E(err) {
|
|
return
|
|
}
|
|
}
|
|
|
|
func (d *D) CleanupEphemeralEvents() {
|
|
log.I.F("cleaning up ephemeral events (kinds 20000-29999)...")
|
|
var err error
|
|
var ephemeralEvents [][]byte
|
|
|
|
// iterate all event records and find ephemeral events
|
|
if err = d.View(
|
|
func(txn *badger.Txn) (err error) {
|
|
prf := new(bytes.Buffer)
|
|
if err = indexes.EventEnc(nil).MarshalWrite(prf); chk.E(err) {
|
|
return
|
|
}
|
|
it := txn.NewIterator(badger.IteratorOptions{Prefix: prf.Bytes()})
|
|
defer it.Close()
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
item := it.Item()
|
|
var val []byte
|
|
if val, err = item.ValueCopy(nil); chk.E(err) {
|
|
continue
|
|
}
|
|
// decode the event
|
|
ev := new(event.E)
|
|
if err = ev.UnmarshalBinary(bytes.NewBuffer(val)); chk.E(err) {
|
|
continue
|
|
}
|
|
// check if it's an ephemeral event (kinds 20000-29999)
|
|
if ev.Kind >= 20000 && ev.Kind <= 29999 {
|
|
ephemeralEvents = append(ephemeralEvents, ev.ID)
|
|
}
|
|
}
|
|
return
|
|
},
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
|
|
// delete all found ephemeral events
|
|
deletedCount := 0
|
|
for _, eventId := range ephemeralEvents {
|
|
if err = d.DeleteEvent(context.Background(), eventId); chk.E(err) {
|
|
log.W.F("failed to delete ephemeral event %x: %v", eventId, err)
|
|
continue
|
|
}
|
|
deletedCount++
|
|
}
|
|
|
|
log.I.F("cleaned up %d ephemeral events from database", deletedCount)
|
|
}
|
|
|
|
// ConvertSmallEventsToInline migrates small events (<=384 bytes) to inline storage.
|
|
// This is a Reiser4-inspired optimization that stores small event data in the key itself,
|
|
// avoiding a second database lookup and improving query performance.
|
|
// Also handles replaceable and addressable events with specialized storage.
|
|
func (d *D) ConvertSmallEventsToInline() {
|
|
log.I.F("converting events to optimized inline storage (Reiser4 optimization)...")
|
|
var err error
|
|
const smallEventThreshold = 384
|
|
|
|
type EventData struct {
|
|
Serial uint64
|
|
EventData []byte
|
|
OldKey []byte
|
|
IsReplaceable bool
|
|
IsAddressable bool
|
|
Pubkey []byte
|
|
Kind uint16
|
|
DTag []byte
|
|
}
|
|
|
|
var events []EventData
|
|
var convertedCount int
|
|
var deletedCount int
|
|
|
|
// Helper function for counting by predicate
|
|
countBy := func(events []EventData, predicate func(EventData) bool) int {
|
|
count := 0
|
|
for _, e := range events {
|
|
if predicate(e) {
|
|
count++
|
|
}
|
|
}
|
|
return count
|
|
}
|
|
|
|
// First pass: identify events in evt table that can benefit from inline storage
|
|
if err = d.View(
|
|
func(txn *badger.Txn) (err error) {
|
|
prf := new(bytes.Buffer)
|
|
if err = indexes.EventEnc(nil).MarshalWrite(prf); chk.E(err) {
|
|
return
|
|
}
|
|
it := txn.NewIterator(badger.IteratorOptions{Prefix: prf.Bytes()})
|
|
defer it.Close()
|
|
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
item := it.Item()
|
|
var val []byte
|
|
if val, err = item.ValueCopy(nil); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Check if event data is small enough for inline storage
|
|
if len(val) <= smallEventThreshold {
|
|
// Decode event to check if it's replaceable or addressable
|
|
ev := new(event.E)
|
|
if err = ev.UnmarshalBinary(bytes.NewBuffer(val)); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Extract serial from key
|
|
key := item.KeyCopy(nil)
|
|
ser := indexes.EventVars()
|
|
if err = indexes.EventDec(ser).UnmarshalRead(bytes.NewBuffer(key)); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
eventData := EventData{
|
|
Serial: ser.Get(),
|
|
EventData: val,
|
|
OldKey: key,
|
|
IsReplaceable: kind.IsReplaceable(ev.Kind),
|
|
IsAddressable: kind.IsParameterizedReplaceable(ev.Kind),
|
|
Pubkey: ev.Pubkey,
|
|
Kind: ev.Kind,
|
|
}
|
|
|
|
// Extract d-tag for addressable events
|
|
if eventData.IsAddressable {
|
|
dTag := ev.Tags.GetFirst([]byte("d"))
|
|
if dTag != nil {
|
|
eventData.DTag = dTag.Value()
|
|
}
|
|
}
|
|
|
|
events = append(events, eventData)
|
|
}
|
|
}
|
|
return nil
|
|
},
|
|
); chk.E(err) {
|
|
return
|
|
}
|
|
|
|
log.I.F("found %d events to convert (%d regular, %d replaceable, %d addressable)",
|
|
len(events),
|
|
countBy(events, func(e EventData) bool { return !e.IsReplaceable && !e.IsAddressable }),
|
|
countBy(events, func(e EventData) bool { return e.IsReplaceable }),
|
|
countBy(events, func(e EventData) bool { return e.IsAddressable }),
|
|
)
|
|
|
|
// Second pass: convert in batches to avoid large transactions
|
|
const batchSize = 1000
|
|
for i := 0; i < len(events); i += batchSize {
|
|
end := i + batchSize
|
|
if end > len(events) {
|
|
end = len(events)
|
|
}
|
|
batch := events[i:end]
|
|
|
|
// Write new inline keys and delete old keys
|
|
if err = d.Update(
|
|
func(txn *badger.Txn) (err error) {
|
|
for _, e := range batch {
|
|
// First, write the sev key for serial-based access (all small events)
|
|
sevKeyBuf := new(bytes.Buffer)
|
|
ser := new(types.Uint40)
|
|
if err = ser.Set(e.Serial); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
if err = indexes.SmallEventEnc(ser).MarshalWrite(sevKeyBuf); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Append size as uint16 big-endian (2 bytes)
|
|
sizeBytes := []byte{byte(len(e.EventData) >> 8), byte(len(e.EventData))}
|
|
sevKeyBuf.Write(sizeBytes)
|
|
|
|
// Append event data
|
|
sevKeyBuf.Write(e.EventData)
|
|
|
|
// Write sev key (no value needed)
|
|
if err = txn.Set(sevKeyBuf.Bytes(), nil); chk.E(err) {
|
|
log.W.F("failed to write sev key for serial %d: %v", e.Serial, err)
|
|
continue
|
|
}
|
|
convertedCount++
|
|
|
|
// Additionally, for replaceable/addressable events, write specialized keys
|
|
if e.IsAddressable && len(e.DTag) > 0 {
|
|
// Addressable event: aev|pubkey_hash|kind|dtag_hash|size|data
|
|
aevKeyBuf := new(bytes.Buffer)
|
|
pubHash := new(types.PubHash)
|
|
pubHash.FromPubkey(e.Pubkey)
|
|
kindVal := new(types.Uint16)
|
|
kindVal.Set(e.Kind)
|
|
dTagHash := new(types.Ident)
|
|
dTagHash.FromIdent(e.DTag)
|
|
|
|
if err = indexes.AddressableEventEnc(pubHash, kindVal, dTagHash).MarshalWrite(aevKeyBuf); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Append size and data
|
|
aevKeyBuf.Write(sizeBytes)
|
|
aevKeyBuf.Write(e.EventData)
|
|
|
|
if err = txn.Set(aevKeyBuf.Bytes(), nil); chk.E(err) {
|
|
log.W.F("failed to write aev key for serial %d: %v", e.Serial, err)
|
|
continue
|
|
}
|
|
} else if e.IsReplaceable {
|
|
// Replaceable event: rev|pubkey_hash|kind|size|data
|
|
revKeyBuf := new(bytes.Buffer)
|
|
pubHash := new(types.PubHash)
|
|
pubHash.FromPubkey(e.Pubkey)
|
|
kindVal := new(types.Uint16)
|
|
kindVal.Set(e.Kind)
|
|
|
|
if err = indexes.ReplaceableEventEnc(pubHash, kindVal).MarshalWrite(revKeyBuf); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Append size and data
|
|
revKeyBuf.Write(sizeBytes)
|
|
revKeyBuf.Write(e.EventData)
|
|
|
|
if err = txn.Set(revKeyBuf.Bytes(), nil); chk.E(err) {
|
|
log.W.F("failed to write rev key for serial %d: %v", e.Serial, err)
|
|
continue
|
|
}
|
|
}
|
|
|
|
// Delete old evt key
|
|
if err = txn.Delete(e.OldKey); chk.E(err) {
|
|
log.W.F("failed to delete old event key for serial %d: %v", e.Serial, err)
|
|
continue
|
|
}
|
|
deletedCount++
|
|
}
|
|
return nil
|
|
},
|
|
); chk.E(err) {
|
|
log.W.F("batch update failed: %v", err)
|
|
continue
|
|
}
|
|
|
|
if (i/batchSize)%10 == 0 && i > 0 {
|
|
log.I.F("progress: %d/%d events converted", i, len(events))
|
|
}
|
|
}
|
|
|
|
log.I.F("migration complete: converted %d events to optimized inline storage, deleted %d old keys", convertedCount, deletedCount)
|
|
}
|
|
|
|
// ReencodeEventsWithOptimizedTags re-encodes all events to use the new binary
|
|
// tag format that stores e/p tag values as 33-byte binary (32-byte hash + null)
|
|
// instead of 64-byte hex strings. This reduces memory usage by ~48% for these tags.
|
|
func (d *D) ReencodeEventsWithOptimizedTags() {
|
|
log.I.F("re-encoding events with optimized tag binary format...")
|
|
var err error
|
|
|
|
type EventUpdate struct {
|
|
Key []byte
|
|
OldData []byte
|
|
NewData []byte
|
|
}
|
|
|
|
var updates []EventUpdate
|
|
var processedCount int
|
|
|
|
// Helper to collect event updates from iterator
|
|
// Only processes regular events (evt prefix) - inline storage already benefits
|
|
collectUpdates := func(it *badger.Iterator, prefix []byte) error {
|
|
for it.Rewind(); it.Valid(); it.Next() {
|
|
item := it.Item()
|
|
key := item.KeyCopy(nil)
|
|
|
|
var val []byte
|
|
if val, err = item.ValueCopy(nil); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Regular event storage - data is in value
|
|
eventData := val
|
|
if len(eventData) == 0 {
|
|
continue
|
|
}
|
|
|
|
// Decode the event
|
|
ev := new(event.E)
|
|
if err = ev.UnmarshalBinary(bytes.NewBuffer(eventData)); chk.E(err) {
|
|
continue
|
|
}
|
|
|
|
// Check if this event has e or p tags that could benefit from optimization
|
|
hasOptimizableTags := false
|
|
if ev.Tags != nil && ev.Tags.Len() > 0 {
|
|
for _, t := range *ev.Tags {
|
|
if t.Len() >= 2 {
|
|
key := t.Key()
|
|
if len(key) == 1 && (key[0] == 'e' || key[0] == 'p') {
|
|
hasOptimizableTags = true
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if !hasOptimizableTags {
|
|
continue
|
|
}
|
|
|
|
// Re-encode the event (this will apply the new tag optimization)
|
|
newData := ev.MarshalBinaryToBytes(nil)
|
|
|
|
// Only update if the data actually changed
|
|
if !bytes.Equal(eventData, newData) {
|
|
updates = append(updates, EventUpdate{
|
|
Key: key,
|
|
OldData: eventData,
|
|
NewData: newData,
|
|
})
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Only process regular "evt" prefix events (not inline storage)
|
|
// Inline storage (sev, rev, aev) already benefits from the optimization
|
|
// because the binary data is stored directly in the key
|
|
prf := new(bytes.Buffer)
|
|
if err = indexes.EventEnc(nil).MarshalWrite(prf); chk.E(err) {
|
|
return
|
|
}
|
|
evtPrefix := prf.Bytes()
|
|
|
|
// Collect updates from regular events only
|
|
if err = d.View(func(txn *badger.Txn) error {
|
|
it := txn.NewIterator(badger.IteratorOptions{Prefix: evtPrefix})
|
|
defer it.Close()
|
|
return collectUpdates(it, evtPrefix)
|
|
}); chk.E(err) {
|
|
return
|
|
}
|
|
|
|
log.I.F("found %d events with e/p tags to re-encode", len(updates))
|
|
|
|
if len(updates) == 0 {
|
|
log.I.F("no events need re-encoding")
|
|
return
|
|
}
|
|
|
|
// Apply updates in batches
|
|
const batchSize = 1000
|
|
for i := 0; i < len(updates); i += batchSize {
|
|
end := i + batchSize
|
|
if end > len(updates) {
|
|
end = len(updates)
|
|
}
|
|
batch := updates[i:end]
|
|
|
|
if err = d.Update(func(txn *badger.Txn) error {
|
|
for _, upd := range batch {
|
|
// Since we're only processing regular events (evt prefix),
|
|
// we just update the value directly
|
|
if err = txn.Set(upd.Key, upd.NewData); chk.E(err) {
|
|
log.W.F("failed to update event: %v", err)
|
|
continue
|
|
}
|
|
processedCount++
|
|
}
|
|
return nil
|
|
}); chk.E(err) {
|
|
log.W.F("batch update failed: %v", err)
|
|
continue
|
|
}
|
|
|
|
if (i/batchSize)%10 == 0 && i > 0 {
|
|
log.I.F("progress: %d/%d events re-encoded", i, len(updates))
|
|
}
|
|
}
|
|
|
|
savedBytes := 0
|
|
for _, upd := range updates {
|
|
savedBytes += len(upd.OldData) - len(upd.NewData)
|
|
}
|
|
|
|
log.I.F("migration complete: re-encoded %d events, saved approximately %d bytes (%.2f KB)",
|
|
processedCount, savedBytes, float64(savedBytes)/1024.0)
|
|
}
|