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local_file_storage_service_test.go
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// Copyright 2024, Offchain Labs, Inc.
// For license information, see https://github.com/nitro/blob/master/LICENSE
package das
import (
"bytes"
"context"
"errors"
"io"
"testing"
"time"
"github.com/offchainlabs/nitro/das/dastree"
)
func getByHashAndCheck(t *testing.T, s *LocalFileStorageService, xs ...string) {
t.Helper()
ctx := context.Background()
for _, x := range xs {
actual, err := s.GetByHash(ctx, dastree.Hash([]byte(x)))
Require(t, err)
if !bytes.Equal([]byte(x), actual) {
Fail(t, "unexpected result")
}
}
}
func countEntries(t *testing.T, layout *trieLayout, expected int) {
t.Helper()
count := 0
trIt, err := layout.iterateBatches()
Require(t, err)
for _, err := trIt.next(); !errors.Is(err, io.EOF); _, err = trIt.next() {
Require(t, err)
count++
}
if count != expected {
Fail(t, "unexpected number of batches", "expected", expected, "was", count)
}
}
func countTimestampEntries(t *testing.T, layout *trieLayout, cutoff time.Time, expected int) {
t.Helper()
var count int
trIt, err := layout.iterateBatchesByTimestamp(cutoff)
Require(t, err)
for _, err := trIt.next(); !errors.Is(err, io.EOF); _, err = trIt.next() {
Require(t, err)
count++
}
if count != expected {
Fail(t, "unexpected count of entries when iterating by timestamp", "expected", expected, "was", count)
}
}
func pruneCountRemaining(t *testing.T, layout *trieLayout, pruneTil time.Time, expected int) {
t.Helper()
err := layout.prune(pruneTil)
Require(t, err)
countEntries(t, layout, expected)
}
func TestMigrationNoExpiry(t *testing.T) {
dir := t.TempDir()
ctx := context.Background()
config := LocalFileStorageConfig{
Enable: true,
DataDir: dir,
EnableExpiry: false,
MaxRetention: time.Hour * 24 * 30,
}
s, err := NewLocalFileStorageService(config)
Require(t, err)
s.enableLegacyLayout = true
// #nosec G115
now := uint64(time.Now().Unix())
err = s.Put(ctx, []byte("a"), now+1)
Require(t, err)
err = s.Put(ctx, []byte("b"), now+1)
Require(t, err)
err = s.Put(ctx, []byte("c"), now+2)
Require(t, err)
err = s.Put(ctx, []byte("d"), now+10)
Require(t, err)
getByHashAndCheck(t, s, "a", "b", "c", "d")
err = migrate(&s.legacyLayout, &s.layout)
Require(t, err)
s.enableLegacyLayout = false
countEntries(t, &s.layout, 4)
getByHashAndCheck(t, s, "a", "b", "c", "d")
// Can still iterate by timestamp even if expiry disabled
// #nosec G115
countTimestampEntries(t, &s.layout, time.Unix(int64(now+11), 0), 4)
}
func TestMigrationExpiry(t *testing.T) {
dir := t.TempDir()
ctx := context.Background()
config := LocalFileStorageConfig{
Enable: true,
DataDir: dir,
EnableExpiry: true,
MaxRetention: time.Hour * 10,
}
s, err := NewLocalFileStorageService(config)
Require(t, err)
s.enableLegacyLayout = true
now := time.Now()
// Use increments of expiry divisor in order to span multiple by-expiry-timestamp dirs
// #nosec G115
err = s.Put(ctx, []byte("a"), uint64(now.Add(-2*time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("b"), uint64(now.Add(-1*time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("c"), uint64(now.Add(time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("d"), uint64(now.Add(time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("e"), uint64(now.Add(2*time.Second*expiryDivisor).Unix()))
Require(t, err)
getByHashAndCheck(t, s, "a", "b", "c", "d", "e")
err = migrate(&s.legacyLayout, &s.layout)
Require(t, err)
s.enableLegacyLayout = false
countEntries(t, &s.layout, 3)
getByHashAndCheck(t, s, "c", "d", "e")
afterNow := now.Add(time.Second)
countTimestampEntries(t, &s.layout, afterNow, 0) // They should have all been filtered out since they're after now
countTimestampEntries(t, &s.layout, afterNow.Add(time.Second*expiryDivisor), 2)
countTimestampEntries(t, &s.layout, afterNow.Add(2*time.Second*expiryDivisor), 3)
pruneCountRemaining(t, &s.layout, afterNow, 3)
getByHashAndCheck(t, s, "c", "d", "e")
pruneCountRemaining(t, &s.layout, afterNow.Add(time.Second*expiryDivisor), 1)
getByHashAndCheck(t, s, "e")
pruneCountRemaining(t, &s.layout, afterNow.Add(2*time.Second*expiryDivisor), 0)
}
func TestExpiryDuplicates(t *testing.T) {
dir := t.TempDir()
ctx := context.Background()
config := LocalFileStorageConfig{
Enable: true,
DataDir: dir,
EnableExpiry: true,
MaxRetention: time.Hour * 10,
}
s, err := NewLocalFileStorageService(config)
Require(t, err)
now := time.Now()
// Use increments of expiry divisor in order to span multiple by-expiry-timestamp dirs
// #nosec G115
err = s.Put(ctx, []byte("a"), uint64(now.Add(-2*time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("a"), uint64(now.Add(-1*time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("a"), uint64(now.Add(time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("d"), uint64(now.Add(time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("e"), uint64(now.Add(2*time.Second*expiryDivisor).Unix()))
Require(t, err)
// #nosec G115
err = s.Put(ctx, []byte("f"), uint64(now.Add(3*time.Second*expiryDivisor).Unix()))
Require(t, err)
// Put the same entry and expiry again, should have no effect
// #nosec G115
err = s.Put(ctx, []byte("f"), uint64(now.Add(3*time.Second*expiryDivisor).Unix()))
Require(t, err)
afterNow := now.Add(time.Second)
// "a" is duplicated
countEntries(t, &s.layout, 4)
// There should be a timestamp entry for each time "a" was added
countTimestampEntries(t, &s.layout, afterNow.Add(1000*time.Hour), 6)
// We've expired the first "a", but there are still 2 other timestamp entries for it
pruneCountRemaining(t, &s.layout, afterNow.Add(-2*time.Second*expiryDivisor), 4)
countTimestampEntries(t, &s.layout, afterNow.Add(1000*time.Hour), 5)
// We've expired the second "a", but there is still 1 other timestamp entry for it
pruneCountRemaining(t, &s.layout, afterNow.Add(-1*time.Second*expiryDivisor), 4)
countTimestampEntries(t, &s.layout, afterNow.Add(1000*time.Hour), 4)
// We've expired the third "a", and also "d"
pruneCountRemaining(t, &s.layout, afterNow.Add(time.Second*expiryDivisor), 2)
countTimestampEntries(t, &s.layout, afterNow.Add(1000*time.Hour), 2)
// We've expired the "e"
pruneCountRemaining(t, &s.layout, afterNow.Add(2*time.Second*expiryDivisor), 1)
countTimestampEntries(t, &s.layout, afterNow.Add(1000*time.Hour), 1)
// We've expired the "f"
pruneCountRemaining(t, &s.layout, afterNow.Add(3*time.Second*expiryDivisor), 0)
countTimestampEntries(t, &s.layout, afterNow.Add(1000*time.Hour), 0)
}