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chunkDataPacks.go
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/
chunkDataPacks.go
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package badger
import (
"fmt"
"github.com/dgraph-io/badger/v2"
"github.com/onflow/flow-go/model/flow"
"github.com/onflow/flow-go/module"
"github.com/onflow/flow-go/module/metrics"
"github.com/onflow/flow-go/storage"
badgermodel "github.com/onflow/flow-go/storage/badger/model"
"github.com/onflow/flow-go/storage/badger/operation"
"github.com/onflow/flow-go/storage/badger/transaction"
)
type ChunkDataPacks struct {
db *badger.DB
collections storage.Collections
byChunkIDCache *Cache[flow.Identifier, *badgermodel.StoredChunkDataPack]
}
func NewChunkDataPacks(collector module.CacheMetrics, db *badger.DB, collections storage.Collections, byChunkIDCacheSize uint) *ChunkDataPacks {
store := func(key flow.Identifier, val *badgermodel.StoredChunkDataPack) func(*transaction.Tx) error {
return transaction.WithTx(operation.SkipDuplicates(operation.InsertChunkDataPack(val)))
}
retrieve := func(key flow.Identifier) func(tx *badger.Txn) (*badgermodel.StoredChunkDataPack, error) {
return func(tx *badger.Txn) (*badgermodel.StoredChunkDataPack, error) {
var c badgermodel.StoredChunkDataPack
err := operation.RetrieveChunkDataPack(key, &c)(tx)
return &c, err
}
}
cache := newCache(collector, metrics.ResourceChunkDataPack,
withLimit[flow.Identifier, *badgermodel.StoredChunkDataPack](byChunkIDCacheSize),
withStore(store),
withRetrieve(retrieve),
)
ch := ChunkDataPacks{
db: db,
byChunkIDCache: cache,
collections: collections,
}
return &ch
}
// Remove removes multiple ChunkDataPacks cs keyed by their ChunkIDs in a batch.
// No errors are expected during normal operation, even if no entries are matched.
func (ch *ChunkDataPacks) Remove(chunkIDs []flow.Identifier) error {
batch := NewBatch(ch.db)
for _, c := range chunkIDs {
err := ch.BatchRemove(c, batch)
if err != nil {
return fmt.Errorf("cannot remove chunk data pack: %w", err)
}
}
err := batch.Flush()
if err != nil {
return fmt.Errorf("cannot flush batch to remove chunk data pack: %w", err)
}
return nil
}
// BatchStore stores ChunkDataPack c keyed by its ChunkID in provided batch.
// No errors are expected during normal operation, but it may return generic error
// if entity is not serializable or Badger unexpectedly fails to process request
func (ch *ChunkDataPacks) BatchStore(c *flow.ChunkDataPack, batch storage.BatchStorage) error {
sc := toStoredChunkDataPack(c)
writeBatch := batch.GetWriter()
batch.OnSucceed(func() {
ch.byChunkIDCache.Insert(sc.ChunkID, sc)
})
return operation.BatchInsertChunkDataPack(sc)(writeBatch)
}
// Store stores multiple ChunkDataPacks cs keyed by their ChunkIDs in a batch.
// No errors are expected during normal operation, but it may return generic error
func (ch *ChunkDataPacks) Store(cs []*flow.ChunkDataPack) error {
batch := NewBatch(ch.db)
for _, c := range cs {
err := ch.BatchStore(c, batch)
if err != nil {
return fmt.Errorf("cannot store chunk data pack: %w", err)
}
}
err := batch.Flush()
if err != nil {
return fmt.Errorf("cannot flush batch: %w", err)
}
return nil
}
// BatchRemove removes ChunkDataPack c keyed by its ChunkID in provided batch
// No errors are expected during normal operation, even if no entries are matched.
// If Badger unexpectedly fails to process the request, the error is wrapped in a generic error and returned.
func (ch *ChunkDataPacks) BatchRemove(chunkID flow.Identifier, batch storage.BatchStorage) error {
writeBatch := batch.GetWriter()
batch.OnSucceed(func() {
ch.byChunkIDCache.Remove(chunkID)
})
return operation.BatchRemoveChunkDataPack(chunkID)(writeBatch)
}
func (ch *ChunkDataPacks) ByChunkID(chunkID flow.Identifier) (*flow.ChunkDataPack, error) {
schdp, err := ch.byChunkID(chunkID)
if err != nil {
return nil, err
}
chdp := &flow.ChunkDataPack{
ChunkID: schdp.ChunkID,
StartState: schdp.StartState,
Proof: schdp.Proof,
ExecutionDataRoot: schdp.ExecutionDataRoot,
}
if !schdp.SystemChunk {
collection, err := ch.collections.ByID(schdp.CollectionID)
if err != nil {
return nil, fmt.Errorf("could not retrive collection (id: %x) for stored chunk data pack: %w", schdp.CollectionID, err)
}
chdp.Collection = collection
}
return chdp, nil
}
func (ch *ChunkDataPacks) byChunkID(chunkID flow.Identifier) (*badgermodel.StoredChunkDataPack, error) {
tx := ch.db.NewTransaction(false)
defer tx.Discard()
schdp, err := ch.retrieveCHDP(chunkID)(tx)
if err != nil {
return nil, fmt.Errorf("could not retrive stored chunk data pack: %w", err)
}
return schdp, nil
}
func (ch *ChunkDataPacks) retrieveCHDP(chunkID flow.Identifier) func(*badger.Txn) (*badgermodel.StoredChunkDataPack, error) {
return func(tx *badger.Txn) (*badgermodel.StoredChunkDataPack, error) {
val, err := ch.byChunkIDCache.Get(chunkID)(tx)
if err != nil {
return nil, err
}
return val, nil
}
}
func toStoredChunkDataPack(c *flow.ChunkDataPack) *badgermodel.StoredChunkDataPack {
sc := &badgermodel.StoredChunkDataPack{
ChunkID: c.ChunkID,
StartState: c.StartState,
Proof: c.Proof,
SystemChunk: false,
ExecutionDataRoot: c.ExecutionDataRoot,
}
if c.Collection != nil {
// non system chunk
sc.CollectionID = c.Collection.ID()
} else {
sc.SystemChunk = true
}
return sc
}