feat(store/v2): pruning manager

store/v2/commitment/iavl/tree.go

@@ -8,11 +8,15 @@ import (
 
 	"cosmossdk.io/core/log"
 	corestore "cosmossdk.io/core/store"
+	"cosmossdk.io/store/v2"
 	"cosmossdk.io/store/v2/commitment"
 	dbm "cosmossdk.io/store/v2/db"
 )
 
-var _ commitment.Tree = (*IavlTree)(nil)
+var (
+	_ commitment.Tree      = (*IavlTree)(nil)
+	_ store.PausablePruner = (*IavlTree)(nil)
+)
 
 // IavlTree is a wrapper around iavl.MutableTree.
 type IavlTree struct {
@@ -21,7 +25,7 @@ type IavlTree struct {
 
 // NewIavlTree creates a new IavlTree instance.
 func NewIavlTree(db corestore.KVStoreWithBatch, logger log.Logger, cfg *Config) *IavlTree {
-	tree := iavl.NewMutableTree(dbm.NewWrapper(db), cfg.CacheSize, cfg.SkipFastStorageUpgrade, logger)
+	tree := iavl.NewMutableTree(dbm.NewWrapper(db), cfg.CacheSize, cfg.SkipFastStorageUpgrade, logger, iavl.AsyncPruningOption(true))
 	return &IavlTree{
 		tree: tree,
 	}
@@ -98,6 +102,15 @@ func (t *IavlTree) Prune(version uint64) error {
 	return t.tree.DeleteVersionsTo(int64(version))
 }
 
+// PausePruning pauses the pruning process.
+func (t *IavlTree) PausePruning(pause bool) {
+	if pause {
+		t.tree.SetCommitting()
+	} else {
+		t.tree.UnsetCommitting()
+	}
+}
+
 // Export exports the tree exporter at the given version.
 func (t *IavlTree) Export(version uint64) (commitment.Exporter, error) {
 	tree, err := t.tree.GetImmutable(int64(version))

store/v2/commitment/iavl/tree_test.go

@@ -2,27 +2,27 @@ package iavl
 
 import (
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 
 	"cosmossdk.io/core/log"
 	corestore "cosmossdk.io/core/store"
-	"cosmossdk.io/store/v2"
 	"cosmossdk.io/store/v2/commitment"
 	dbm "cosmossdk.io/store/v2/db"
 )
 
 func TestCommitterSuite(t *testing.T) {
 	s := &commitment.CommitStoreTestSuite{
-		NewStore: func(db corestore.KVStoreWithBatch, storeKeys []string, pruneOpts *store.PruneOptions, logger log.Logger) (*commitment.CommitStore, error) {
+		NewStore: func(db corestore.KVStoreWithBatch, storeKeys []string, logger log.Logger) (*commitment.CommitStore, error) {
 			multiTrees := make(map[string]commitment.Tree)
 			cfg := DefaultConfig()
 			for _, storeKey := range storeKeys {
 				prefixDB := dbm.NewPrefixDB(db, []byte(storeKey))
 				multiTrees[storeKey] = NewIavlTree(prefixDB, logger, cfg)
 			}
-			return commitment.NewCommitStore(multiTrees, db, pruneOpts, logger)
+			return commitment.NewCommitStore(multiTrees, db, logger)
 		},
 	}
 
@@ -100,8 +100,14 @@ func TestIavlTree(t *testing.T) {
 	err = tree.Prune(1)
 	require.NoError(t, err)
 	require.Equal(t, uint64(3), tree.GetLatestVersion())
-	err = tree.LoadVersion(1)
-	require.Error(t, err)
+	// async pruning check
+	checkErr := func() bool {
+		if _, err := tree.tree.LoadVersion(1); err != nil {
+			return true
+		}
+		return false
+	}
+	require.Eventually(t, checkErr, 2*time.Second, 100*time.Millisecond)
 
 	// load version 2
 	err = tree.LoadVersion(2)

store/v2/commitment/store.go

@@ -28,6 +28,7 @@ const (
 var (
 	_ store.Committer             = (*CommitStore)(nil)
 	_ snapshots.CommitSnapshotter = (*CommitStore)(nil)
+	_ store.PausablePruner        = (*CommitStore)(nil)
 )
 
 // CommitStore is a wrapper around multiple Tree objects mapped by a unique store
@@ -39,26 +40,18 @@ type CommitStore struct {
 	logger     log.Logger
 	db         corestore.KVStoreWithBatch
 	multiTrees map[string]Tree
-
-	// pruneOptions is the pruning configuration.
-	pruneOptions *store.PruneOptions // TODO are there no default prune options?
 }
 
 // NewCommitStore creates a new CommitStore instance.
-func NewCommitStore(trees map[string]Tree, db corestore.KVStoreWithBatch, pruneOpts *store.PruneOptions, logger log.Logger) (*CommitStore, error) {
-	if pruneOpts == nil {
-		pruneOpts = store.DefaultPruneOptions()
-	}
-
+func NewCommitStore(trees map[string]Tree, db corestore.KVStoreWithBatch, logger log.Logger) (*CommitStore, error) {
 	return &CommitStore{
-		logger:       logger,
-		db:           db,
-		multiTrees:   trees,
-		pruneOptions: pruneOpts,
+		logger:     logger,
+		db:         db,
+		multiTrees: trees,
 	}, nil
 }
 
-func (c *CommitStore) WriteBatch(cs *corestore.Changeset) error {
+func (c *CommitStore) WriteChangeset(cs *corestore.Changeset) error {
 	for _, pairs := range cs.Changes {
 
 		key := conv.UnsafeBytesToStr(pairs.Actor)
@@ -237,13 +230,6 @@ func (c *CommitStore) Commit(version uint64) (*proof.CommitInfo, error) {
 		return nil, err
 	}
 
-	// Prune the old versions.
-	if prune, pruneVersion := c.pruneOptions.ShouldPrune(version); prune {
-		if err := c.Prune(pruneVersion); err != nil {
-			c.logger.Info("failed to prune SC", "prune_version", pruneVersion, "err", err)
-		}
-	}
-
 	return cInfo, nil
 }
 
@@ -297,6 +283,7 @@ func (c *CommitStore) Get(storeKey []byte, version uint64, key []byte) ([]byte,
 	return bz, nil
 }
 
+// Prune implements store.Pruner.
 func (c *CommitStore) Prune(version uint64) (ferr error) {
 	// prune the metadata
 	batch := c.db.NewBatch()
@@ -322,6 +309,15 @@ func (c *CommitStore) Prune(version uint64) (ferr error) {
 	return ferr
 }
 
+// PausePruning implements store.PausablePruner.
+func (c *CommitStore) PausePruning(pause bool) {
+	for _, tree := range c.multiTrees {
+		if pruner, ok := tree.(store.PausablePruner); ok {
+			pruner.PausePruning(pause)
+		}
+	}
+}
+
 // Snapshot implements snapshotstypes.CommitSnapshotter.
 func (c *CommitStore) Snapshot(version uint64, protoWriter protoio.Writer) error {
 	if version == 0 {

store/v2/commitment/store_test_suite.go

@@ -25,12 +25,12 @@ const (
 type CommitStoreTestSuite struct {
 	suite.Suite
 
-	NewStore func(db corestore.KVStoreWithBatch, storeKeys []string, pruneOpts *store.PruneOptions, logger log.Logger) (*CommitStore, error)
+	NewStore func(db corestore.KVStoreWithBatch, storeKeys []string, logger log.Logger) (*CommitStore, error)
 }
 
 func (s *CommitStoreTestSuite) TestStore_Snapshotter() {
 	storeKeys := []string{storeKey1, storeKey2}
-	commitStore, err := s.NewStore(dbm.NewMemDB(), storeKeys, nil, log.NewNopLogger())
+	commitStore, err := s.NewStore(dbm.NewMemDB(), storeKeys, log.NewNopLogger())
 	s.Require().NoError(err)
 
 	latestVersion := uint64(10)
@@ -45,7 +45,7 @@ func (s *CommitStoreTestSuite) TestStore_Snapshotter() {
 				kvPairs[storeKey] = append(kvPairs[storeKey], corestore.KVPair{Key: key, Value: value})
 			}
 		}
-		s.Require().NoError(commitStore.WriteBatch(corestore.NewChangesetWithPairs(kvPairs)))
+		s.Require().NoError(commitStore.WriteChangeset(corestore.NewChangesetWithPairs(kvPairs)))
 
 		_, err = commitStore.Commit(i)
 		s.Require().NoError(err)
@@ -64,7 +64,7 @@ func (s *CommitStoreTestSuite) TestStore_Snapshotter() {
 		},
 	}
 
-	targetStore, err := s.NewStore(dbm.NewMemDB(), storeKeys, nil, log.NewNopLogger())
+	targetStore, err := s.NewStore(dbm.NewMemDB(), storeKeys, log.NewNopLogger())
 	s.Require().NoError(err)
 
 	chunks := make(chan io.ReadCloser, kvCount*int(latestVersion))
@@ -129,7 +129,7 @@ func (s *CommitStoreTestSuite) TestStore_Pruning() {
 		KeepRecent: 10,
 		Interval:   5,
 	}
-	commitStore, err := s.NewStore(dbm.NewMemDB(), storeKeys, pruneOpts, log.NewNopLogger())
+	commitStore, err := s.NewStore(dbm.NewMemDB(), storeKeys, log.NewNopLogger())
 	s.Require().NoError(err)
 
 	latestVersion := uint64(100)
@@ -144,10 +144,15 @@ func (s *CommitStoreTestSuite) TestStore_Pruning() {
 				kvPairs[storeKey] = append(kvPairs[storeKey], corestore.KVPair{Key: key, Value: value})
 			}
 		}
-		s.Require().NoError(commitStore.WriteBatch(corestore.NewChangesetWithPairs(kvPairs)))
+		s.Require().NoError(commitStore.WriteChangeset(corestore.NewChangesetWithPairs(kvPairs)))
 
 		_, err = commitStore.Commit(i)
 		s.Require().NoError(err)
+
+		if prune, pruneVersion := pruneOpts.ShouldPrune(i); prune {
+			s.Require().NoError(commitStore.Prune(pruneVersion))
+		}
+
 	}
 
 	pruneVersion := latestVersion - pruneOpts.KeepRecent - 1

store/v2/database.go

@@ -20,20 +20,15 @@ type VersionedDatabase interface {
 
 	ApplyChangeset(version uint64, cs *corestore.Changeset) error
 
-	// Prune attempts to prune all versions up to and including the provided
-	// version argument. The operation should be idempotent. An error should be
-	// returned upon failure.
-	Prune(version uint64) error
-
 	// Close releases associated resources. It should NOT be idempotent. It must
 	// only be called once and any call after may panic.
 	io.Closer
 }
 
 // Committer defines an API for committing state.
 type Committer interface {
-	// WriteBatch writes a batch of key-value pairs to the tree.
-	WriteBatch(cs *corestore.Changeset) error
+	// WriteChangeset writes the changeset to the commitment state.
+	WriteChangeset(cs *corestore.Changeset) error
 
 	// WorkingCommitInfo returns the CommitInfo for the working tree.
 	WorkingCommitInfo(version uint64) *proof.CommitInfo
@@ -62,11 +57,6 @@ type Committer interface {
 	// GetCommitInfo returns the CommitInfo for the given version.
 	GetCommitInfo(version uint64) (*proof.CommitInfo, error)
 
-	// Prune attempts to prune all versions up to and including the provided
-	// version argument. The operation should be idempotent. An error should be
-	// returned upon failure.
-	Prune(version uint64) error
-
 	// Close releases associated resources. It should NOT be idempotent. It must
 	// only be called once and any call after may panic.
 	io.Closer

store/v2/go.mod

@@ -8,7 +8,7 @@ require (
 	cosmossdk.io/log v1.3.1
 	github.com/cockroachdb/pebble v1.1.0
 	github.com/cosmos/gogoproto v1.4.12
-	github.com/cosmos/iavl v1.1.4
+	github.com/cosmos/iavl v1.2.0
 	github.com/cosmos/ics23/go v0.10.0
 	github.com/google/btree v1.1.2
 	github.com/hashicorp/go-metrics v0.5.3

store/v2/go.sum

@@ -36,8 +36,8 @@ github.com/cosmos/cosmos-db v1.0.2 h1:hwMjozuY1OlJs/uh6vddqnk9j7VamLv+0DBlbEXbAK
 github.com/cosmos/cosmos-db v1.0.2/go.mod h1:Z8IXcFJ9PqKK6BIsVOB3QXtkKoqUOp1vRvPT39kOXEA=
 github.com/cosmos/gogoproto v1.4.12 h1:vB6Lbe/rtnYGjQuFxkPiPYiCybqFT8QvLipDZP8JpFE=
 github.com/cosmos/gogoproto v1.4.12/go.mod h1:LnZob1bXRdUoqMMtwYlcR3wjiElmlC+FkjaZRv1/eLY=
-github.com/cosmos/iavl v1.1.4 h1:Z0cVVjeQqOUp78/nWt/uhQy83vYluWlAMGQ4zbH9G34=
-github.com/cosmos/iavl v1.1.4/go.mod h1:vCYmRQUJU1wwj0oRD3wMEtOM9sJNDP+GFMaXmIxZ/rU=
+github.com/cosmos/iavl v1.2.0 h1:kVxTmjTh4k0Dh1VNL046v6BXqKziqMDzxo93oh3kOfM=
+github.com/cosmos/iavl v1.2.0/go.mod h1:HidWWLVAtODJqFD6Hbne2Y0q3SdxByJepHUOeoH4LiI=
 github.com/cosmos/ics23/go v0.10.0 h1:iXqLLgp2Lp+EdpIuwXTYIQU+AiHj9mOC2X9ab++bZDM=
 github.com/cosmos/ics23/go v0.10.0/go.mod h1:ZfJSmng/TBNTBkFemHHHj5YY7VAU/MBU980F4VU1NG0=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=

store/v2/migration/manager.go

@@ -233,7 +233,7 @@ func (m *Manager) Sync() error {
 				return fmt.Errorf("failed to unmarshal changeset: %w", err)
 			}
 			if m.stateCommitment != nil {
-				if err := m.stateCommitment.WriteBatch(cs); err != nil {
+				if err := m.stateCommitment.WriteChangeset(cs); err != nil {
 					return fmt.Errorf("failed to write changeset to commitment: %w", err)
 				}
 				if _, err := m.stateCommitment.Commit(version); err != nil {

store/v2/migration/manager_test.go

@@ -28,7 +28,7 @@ func setupMigrationManager(t *testing.T, noCommitStore bool) (*Manager, *commitm
 		multiTrees[storeKey] = iavl.NewIavlTree(prefixDB, log.NewNopLogger(), iavl.DefaultConfig())
 	}
 
-	commitStore, err := commitment.NewCommitStore(multiTrees, db, nil, log.NewNopLogger())
+	commitStore, err := commitment.NewCommitStore(multiTrees, db, log.NewNopLogger())
 	require.NoError(t, err)
 
 	snapshotsStore, err := snapshots.NewStore(t.TempDir())
@@ -38,7 +38,7 @@ func setupMigrationManager(t *testing.T, noCommitStore bool) (*Manager, *commitm
 
 	storageDB, err := pebbledb.New(t.TempDir())
 	require.NoError(t, err)
-	newStorageStore := storage.NewStorageStore(storageDB, nil, log.NewNopLogger()) // for store/v2
+	newStorageStore := storage.NewStorageStore(storageDB, log.NewNopLogger()) // for store/v2
 
 	db1 := dbm.NewMemDB()
 	multiTrees1 := make(map[string]commitment.Tree)
@@ -47,7 +47,7 @@ func setupMigrationManager(t *testing.T, noCommitStore bool) (*Manager, *commitm
 		multiTrees1[storeKey] = iavl.NewIavlTree(prefixDB, log.NewNopLogger(), iavl.DefaultConfig())
 	}
 
-	newCommitStore, err := commitment.NewCommitStore(multiTrees1, db1, nil, log.NewNopLogger()) // for store/v2
+	newCommitStore, err := commitment.NewCommitStore(multiTrees1, db1, log.NewNopLogger()) // for store/v2
 	require.NoError(t, err)
 	if noCommitStore {
 		newCommitStore = nil
@@ -71,7 +71,7 @@ func TestMigrateState(t *testing.T) {
 						cs.Add([]byte(storeKey), []byte(fmt.Sprintf("key-%d-%d", version, i)), []byte(fmt.Sprintf("value-%d-%d", version, i)), false)
 					}
 				}
-				require.NoError(t, orgCommitStore.WriteBatch(cs))
+				require.NoError(t, orgCommitStore.WriteChangeset(cs))
 				_, err := orgCommitStore.Commit(version)
 				require.NoError(t, err)
 			}

store/v2/pruning/README.md

@@ -0,0 +1,52 @@
+# Pruning Manager
+
+The `pruning` package defines the `PruningManager` struct which is responsible for
+pruning the state storage (SS) and the state commitment (SC) based on the current
+height of the chain. The `PruneOptions` struct defines the configuration for pruning
+and is passed to the `PruningManager` during initialization.
+
+## Prune Options
+
+The `PruneOptions` struct includes the following fields:
+
+- `KeepRecent` (uint64): The number of recent heights to keep in the state.
+- `Interval` (uint64): The interval of how often to prune the state. 0 means no pruning.
+
+## Pausable Pruner
+
+The `PausablePruner` interface defines the `PausePruning` method which is used to pause
+the pruning process. The `PruningManager` will check if the pruner is a `PausablePruner`
+and call the `PausePruning` method before and after `Commit` to pause and resume pruning.
+This is useful for when the pruning process is asynchronous and needs to be paused during
+a commit to prevent parallel writes.
+
+## Pruning Flow
+
+```mermaid
+sequenceDiagram
+    autonumber
+
+    participant A as RootStore
+    participant B as PruningManager
+    participant C as CommitmentStore
+    participant D as StorageStore
+
+    loop Commit
+        A->>B: SignalCommit(true, height)
+        alt SC is PausablePruner
+            B->>C: PausePruning(true)
+        else SS is PausablePruner
+            B->>D: PausePruing(true)
+        end
+        A->>C: Commit Changeset
+        A->>D: Write Changeset
+        A->>B: SignalCommit(false, height)
+        alt SC is PausablePruner
+            B->>C: PausePruning(false)
+        else SS is PausablePruner
+            B->>D: PausePruing(false)
+        end
+        B->>C: Prune(height)
+        B->>D: Prune(height)
+    end
+```