utilize eth key preimage table

README.md

@@ -34,7 +34,7 @@ Ancient interfaces are used for Ancient/frozen data operations (e.g. rawdb/table
 Outside of these primarily auxiliary capabilities, this package satisfies the interfaces required for many state operations using Ethereum data on IPFS.
 
 e.g.
-
+ 
 go-ethereum trie.NodeIterator and state.NodeIterator can be constructed from the ethdb.KeyValueStore and ethdb.Database interfaces, respectively:
 
 ```go
@@ -42,7 +42,7 @@ package main
 
 import (
     "context"
-
+	
     "github.com/ethereum/go-ethereum/common"
     "github.com/ethereum/go-ethereum/core/state"
     "github.com/ethereum/go-ethereum/trie"
@@ -50,7 +50,7 @@ import (
     "github.com/ipfs/go-ipfs/core"
     "github.com/ipfs/go-ipfs/repo/fsrepo"
     "github.com/jmoiron/sqlx"
-    "github.com/vulcanize/ipfs-ethdb/v4"
+    "github.com/vulcanize/ipfs-ethdb"
 )
 
 func main() {

batch.go

@@ -21,8 +21,8 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethdb"
-	lru "github.com/hashicorp/golang-lru"
+	"github.com/hashicorp/golang-lru"
-	blocks "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
 )
 
@@ -30,8 +30,6 @@ var (
 	EvictionWarningErr = errors.New("warn: batch has exceeded capacity, data has been evicted")
 )
 
-var _ ethdb.Batch = &Batch{}
-
 // Batch is the type that satisfies the ethdb.Batch interface for IPFS Ethereum data using the ipfs blockservice interface
 // This is ipfs-backing-datastore agnostic but must operate through a configured ipfs node (and so is subject to lockfile contention with e.g. an ipfs daemon)
 // If blockservice block exchange is configured the blockservice can fetch data that are missing locally from IPFS peers

batch_test.go

@@ -25,7 +25,7 @@ import (
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
-	ipfsethdb "github.com/vulcanize/ipfs-ethdb/v4"
+	ipfsethdb "github.com/vulcanize/ipfs-ethdb"
 )
 
 var (

database.go

@@ -33,8 +33,6 @@ var (
 	errNotSupported             = errors.New("this operation is not supported")
 )
 
-var _ ethdb.Database = &Database{}
-
 // Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for IPFS Ethereum data
 // This is ipfs-backing-datastore agnostic but must operate through a configured ipfs node (and so is subject to lockfile contention with e.g. an ipfs daemon)
 // If blockservice block exchange is configured the blockservice can fetch data that are missing locally from IPFS peers
@@ -56,10 +54,6 @@ func NewDatabase(bs blockservice.BlockService) ethdb.Database {
 	}
 }
 
-func (d *Database) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
-	return 0, errNotSupported
-}
-
 // Has satisfies the ethdb.KeyValueReader interface
 // Has retrieves if a key is present in the key-value data store
 // This only operates on the local blockstore not through the exchange
@@ -160,16 +154,6 @@ func (d *Database) NewBatch() ethdb.Batch {
 	return b
 }
 
-// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	b, err := NewBatch(d.blockService, size)
-	if err != nil {
-		panic(err)
-	}
-	return b
-}
-
 // NewIterator satisfies the ethdb.Iteratee interface
 // it creates a binary-alphabetical iterator over a subset
 // of database content with a particular key prefix, starting at a particular
@@ -205,41 +189,21 @@ func (d *Database) Ancients() (uint64, error) {
 	return 0, errNotSupported
 }
 
-// Tail satisfies the ethdb.AncientReader interface.
-// Tail returns the number of first stored item in the freezer.
-func (d *Database) Tail() (uint64, error) {
-	return 0, errNotSupported
-}
-
 // AncientSize satisfies the ethdb.AncientReader interface
 // AncientSize returns the ancient size of the specified category
 func (d *Database) AncientSize(kind string) (uint64, error) {
 	return 0, errNotSupported
 }
 
-// AncientRange retrieves all the items in a range, starting from the index 'start'.
+// AppendAncient satisfies the ethdb.AncientWriter interface
-// It will return
+// AppendAncient injects all binary blobs belong to block at the end of the append-only immutable table files
-//  - at most 'count' items,
+func (d *Database) AppendAncient(number uint64, hash, header, body, receipt, td []byte) error {
-//  - at least 1 item (even if exceeding the maxBytes), but will otherwise
-//   return as many items as fit into maxBytes.
-func (d *Database) AncientRange(kind string, start, count, maxBytes uint64) ([][]byte, error) {
-	return nil, errNotSupported
-}
-
-// ReadAncients applies the provided AncientReader function
-func (d *Database) ReadAncients(fn func(ethdb.AncientReader) error) (err error) {
 	return errNotSupported
 }
 
-// TruncateHead satisfies the ethdb.AncientWriter interface.
+// TruncateAncients satisfies the ethdb.AncientWriter interface
-// TruncateHead discards all but the first n ancient data from the ancient store.
+// TruncateAncients discards all but the first n ancient data from the ancient store
-func (d *Database) TruncateHead(n uint64) error {
+func (d *Database) TruncateAncients(n uint64) error {
-	return errNotSupported
-}
-
-// TruncateTail satisfies the ethdb.AncientWriter interface.
-// TruncateTail discards the first n ancient data from the ancient store.
-func (d *Database) TruncateTail(n uint64) error {
 	return errNotSupported
 }
 
@@ -248,15 +212,3 @@ func (d *Database) TruncateTail(n uint64) error {
 func (d *Database) Sync() error {
 	return errNotSupported
 }
-
-// MigrateTable satisfies the ethdb.AncientWriter interface.
-// MigrateTable processes and migrates entries of a given table to a new format.
-func (d *Database) MigrateTable(string, func([]byte) ([]byte, error)) error {
-	return errNotSupported
-}
-
-// NewSnapshot satisfies the ethdb.Snapshotter interface.
-// NewSnapshot creates a database snapshot based on the current state.
-func (d *Database) NewSnapshot() (ethdb.Snapshot, error) {
-	return nil, errNotSupported
-}

database_test.go

@@ -26,7 +26,7 @@ import (
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
-	ipfsethdb "github.com/vulcanize/ipfs-ethdb/v4"
+	ipfsethdb "github.com/vulcanize/ipfs-ethdb"
 )
 
 var (

go.mod

@@ -1,22 +1,20 @@
-module github.com/vulcanize/ipfs-ethdb/v4
+module github.com/vulcanize/ipfs-ethdb
 
-go 1.15
+go 1.13
 
 require (
-	github.com/btcsuite/btcd v0.22.1 // indirect
+	github.com/ethereum/go-ethereum v1.9.15
-	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
+	github.com/hashicorp/golang-lru v0.5.4
-	github.com/ethereum/go-ethereum v1.10.17
+	github.com/ipfs/go-block-format v0.0.2
-	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d
-	github.com/ipfs/go-block-format v0.0.3
 	github.com/ipfs/go-blockservice v0.1.3
-	github.com/ipfs/go-cid v0.0.7
+	github.com/ipfs/go-cid v0.0.5
-	github.com/ipfs/go-ipfs-blockstore v1.0.1
+	github.com/ipfs/go-ipfs-blockstore v1.0.0
 	github.com/ipfs/go-ipfs-ds-help v1.0.0
 	github.com/ipfs/go-ipfs-exchange-interface v0.0.1
-	github.com/jmoiron/sqlx v1.3.5
+	github.com/jmoiron/sqlx v1.2.0
-	github.com/lib/pq v1.10.5
+	github.com/lib/pq v1.0.0
-	github.com/mailgun/groupcache/v2 v2.3.0
+	github.com/multiformats/go-multihash v0.0.13
-	github.com/multiformats/go-multihash v0.1.0
+	github.com/onsi/ginkgo v1.8.0
-	github.com/onsi/ginkgo v1.16.5
+	github.com/onsi/gomega v1.5.0
-	github.com/onsi/gomega v1.19.0
+	github.com/sirupsen/logrus v1.6.0
 )

go.sum

@@ -1,281 +1,123 @@
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-rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

iterator.go

@@ -23,8 +23,6 @@ import (
 	"github.com/ipfs/go-blockservice"
 )
 
-var _ ethdb.Iterator = &Iterator{}
-
 // Iterator is the type that satisfies the ethdb.Iterator interface for IPFS Ethereum data
 // Iteratee interface is used in Geth for various tests, trie/sync_bloom.go (for fast sync),
 // rawdb.InspectDatabase, and the new core/state/snapshot features.

mock_blockservice.go

@@ -20,11 +20,11 @@ import (
 	"context"
 	"errors"
 
-	blocks "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
 	"github.com/ipfs/go-cid"
-	blockstore "github.com/ipfs/go-ipfs-blockstore"
+	"github.com/ipfs/go-ipfs-blockstore"
-	exchange "github.com/ipfs/go-ipfs-exchange-interface"
+	"github.com/ipfs/go-ipfs-exchange-interface"
 )
 
 var (

postgres/batch.go

@@ -17,29 +17,22 @@
 package pgipfsethdb
 
 import (
-	"math/big"
-
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/jmoiron/sqlx"
 )
 
-var _ ethdb.Batch = &Batch{}
-
 // Batch is the type that satisfies the ethdb.Batch interface for PG-IPFS Ethereum data using a direct Postgres connection
 type Batch struct {
 	db        *sqlx.DB
 	tx        *sqlx.Tx
 	valueSize int
-
-	blockNumber *big.Int
 }
 
 // NewBatch returns a ethdb.Batch interface for PG-IPFS
-func NewBatch(db *sqlx.DB, tx *sqlx.Tx, blockNumber *big.Int) ethdb.Batch {
+func NewBatch(db *sqlx.DB, tx *sqlx.Tx) ethdb.Batch {
 	b := &Batch{
-		db:          db,
+		db: db,
-		tx:          tx,
+		tx: tx,
-		blockNumber: blockNumber,
 	}
 	if tx == nil {
 		b.Reset()
@@ -55,7 +48,10 @@ func (b *Batch) Put(key []byte, value []byte) (err error) {
 	if err != nil {
 		return err
 	}
-	if _, err = b.tx.Exec(putPgStr, mhKey, value, b.blockNumber.Uint64()); err != nil {
+	if _, err = b.tx.Exec(putPgStr, mhKey, value); err != nil {
+		return err
+	}
+	if _, err = b.tx.Exec(putPreimagePgStr, key, mhKey); err != nil {
 		return err
 	}
 	b.valueSize += len(value)
@@ -65,11 +61,7 @@ func (b *Batch) Put(key []byte, value []byte) (err error) {
 // Delete satisfies the ethdb.Batch interface
 // Delete removes the key from the key-value data store
 func (b *Batch) Delete(key []byte) (err error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
+	_, err = b.tx.Exec(deletePgStr, key)
-	if err != nil {
-		return err
-	}
-	_, err = b.tx.Exec(deletePgStr, mhKey)
 	return err
 }
 

postgres/batch_test.go

@@ -18,16 +18,14 @@ package pgipfsethdb_test
 
 import (
 	"math/big"
-	"time"
 
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/mailgun/groupcache/v2"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
-	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/v4/postgres"
+	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/postgres"
 )
 
 var (
@@ -41,23 +39,10 @@ var _ = Describe("Batch", func() {
 	BeforeEach(func() {
 		db, err = pgipfsethdb.TestDB()
 		Expect(err).ToNot(HaveOccurred())
-
+		database = pgipfsethdb.NewDatabase(db)
-		cacheConfig := pgipfsethdb.CacheConfig{
-			Name:           "db",
-			Size:           3000000, // 3MB
-			ExpiryDuration: time.Hour,
-		}
-
-		database = pgipfsethdb.NewDatabase(db, cacheConfig)
-
-		databaseWithBlock, ok := database.(*pgipfsethdb.Database)
-		Expect(ok).To(BeTrue())
-		(*databaseWithBlock).BlockNumber = testBlockNumber
-
 		batch = database.NewBatch()
 	})
 	AfterEach(func() {
-		groupcache.DeregisterGroup("db")
 		err = pgipfsethdb.ResetTestDB(db)
 		Expect(err).ToNot(HaveOccurred())
 	})

postgres/database.go

@@ -17,150 +17,96 @@
 package pgipfsethdb
 
 import (
-	"context"
 	"errors"
 	"fmt"
-	"math/big"
-	"strconv"
 	"strings"
-	"time"
+
+	"github.com/sirupsen/logrus"
 
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/jmoiron/sqlx"
-	"github.com/mailgun/groupcache/v2"
 )
 
 var errNotSupported = errors.New("this operation is not supported")
 
 var (
-	hasPgStr    = "SELECT exists(select 1 from public.blocks WHERE key = $1 LIMIT 1)"
+	hasPgStr         = "SELECT exists(select 1 from eth.key_preimages WHERE eth_key = $1)"
-	getPgStr    = "SELECT data FROM public.blocks WHERE key = $1 LIMIT 1"
+	getPgStr         = "SELECT data FROM public.blocks INNER JOIN eth.key_preimages ON (ipfs_key = blocks.key) WHERE eth_key = $1"
-	putPgStr    = "INSERT INTO public.blocks (key, data, block_number) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
+	putPgStr         = "INSERT INTO public.blocks (key, data) VALUES ($1, $2) ON CONFLICT (key) DO NOTHING"
-	deletePgStr = "DELETE FROM public.blocks WHERE key = $1"
+	putPreimagePgStr = "INSERT INTO eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2) ON CONFLICT (eth_key) DO NOTHING"
-	dbSizePgStr = "SELECT pg_database_size(current_database())"
+	deletePgStr      = "DELETE FROM public.blocks USING eth.key_preimages WHERE ipfs_key = blocks.key AND eth_key = $1"
+	dbSizePgStr      = "SELECT pg_database_size(current_database())"
 )
 
-var _ ethdb.Database = &Database{}
-
 // Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for PG-IPFS Ethereum data using a direct Postgres connection
 type Database struct {
-	db    *sqlx.DB
+	db *sqlx.DB
-	cache *groupcache.Group
-
-	BlockNumber *big.Int
-}
-
-func (d *Database) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
-	return 0, errNotSupported
-}
-
-type CacheConfig struct {
-	Name           string
-	Size           int
-	ExpiryDuration time.Duration
 }
 
 // NewKeyValueStore returns a ethdb.KeyValueStore interface for PG-IPFS
-func NewKeyValueStore(db *sqlx.DB, cacheConfig CacheConfig) ethdb.KeyValueStore {
+func NewKeyValueStore(db *sqlx.DB) ethdb.KeyValueStore {
-	database := Database{db: db}
+	return &Database{
-	database.InitCache(cacheConfig)
+		db: db,
-
+	}
-	return &database
 }
 
 // NewDatabase returns a ethdb.Database interface for PG-IPFS
-func NewDatabase(db *sqlx.DB, cacheConfig CacheConfig) ethdb.Database {
+func NewDatabase(db *sqlx.DB) ethdb.Database {
-	database := Database{db: db}
+	return &Database{
-	database.InitCache(cacheConfig)
+		db: db,
-
+	}
-	return &database
-}
-
-func (d *Database) InitCache(cacheConfig CacheConfig) {
-	d.cache = groupcache.NewGroup(cacheConfig.Name, int64(cacheConfig.Size), groupcache.GetterFunc(
-		func(_ context.Context, id string, dest groupcache.Sink) error {
-			val, err := d.dbGet(id)
-
-			if err != nil {
-				return err
-			}
-
-			// Set the value in the groupcache, with expiry
-			if err := dest.SetBytes(val, time.Now().Add(cacheConfig.ExpiryDuration)); err != nil {
-				return err
-			}
-
-			return nil
-		},
-	))
-}
-
-func (d *Database) GetCacheStats() groupcache.Stats {
-	return d.cache.Stats
 }
 
 // Has satisfies the ethdb.KeyValueReader interface
 // Has retrieves if a key is present in the key-value data store
+// Has uses the eth.key_preimages table
 func (d *Database) Has(key []byte) (bool, error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
-	if err != nil {
-		return false, err
-	}
 	var exists bool
-	return exists, d.db.Get(&exists, hasPgStr, mhKey)
+	return exists, d.db.Get(&exists, hasPgStr, key)
-}
-
-// Get retrieves the given key if it's present in the key-value data store
-func (d *Database) dbGet(key string) ([]byte, error) {
-	var data []byte
-	return data, d.db.Get(&data, getPgStr, key)
 }
 
 // Get satisfies the ethdb.KeyValueReader interface
 // Get retrieves the given key if it's present in the key-value data store
+// Get uses the eth.key_preimages table
 func (d *Database) Get(key []byte) ([]byte, error) {
-	mhKey, err := MultihashKeyFromKeccak256(key)
-	if err != nil {
-		return nil, err
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
-	defer cancel()
-
 	var data []byte
-	return data, d.cache.Get(ctx, mhKey, groupcache.AllocatingByteSliceSink(&data))
+	return data, d.db.Get(&data, getPgStr, key)
 }
 
 // Put satisfies the ethdb.KeyValueWriter interface
 // Put inserts the given value into the key-value data store
 // Key is expected to be the keccak256 hash of value
+// Put inserts the keccak256 key into the eth.key_preimages table
 func (d *Database) Put(key []byte, value []byte) error {
 	mhKey, err := MultihashKeyFromKeccak256(key)
 	if err != nil {
 		return err
 	}
-	_, err = d.db.Exec(putPgStr, mhKey, value, d.BlockNumber.Uint64())
+	tx, err := d.db.Beginx()
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			if err := tx.Rollback(); err != nil {
+				logrus.Error(err)
+			}
+		} else {
+			err = tx.Commit()
+		}
+	}()
+	if _, err = tx.Exec(putPgStr, mhKey, value); err != nil {
+		return err
+	}
+	_, err = tx.Exec(putPreimagePgStr, key, mhKey)
 	return err
 }
 
 // Delete satisfies the ethdb.KeyValueWriter interface
 // Delete removes the key from the key-value data store
+// Delete uses the eth.key_preimages table
 func (d *Database) Delete(key []byte) error {
-	mhKey, err := MultihashKeyFromKeccak256(key)
+	_, err := d.db.Exec(deletePgStr, key)
-	if err != nil {
-		return err
-	}
-
-	_, err = d.db.Exec(deletePgStr, mhKey)
-	if err != nil {
-		return err
-	}
-
-	// Remove from cache.
-	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
-	defer cancel()
-	err = d.cache.Remove(ctx, mhKey)
-
 	return err
 }
 
@@ -218,19 +164,19 @@ func (d *Database) Stat(property string) (string, error) {
 		var byteSize string
 		return byteSize, d.db.Get(&byteSize, dbSizePgStr)
 	case Idle:
-		return strconv.Itoa(d.db.Stats().Idle), nil
+		return string(d.db.Stats().Idle), nil
 	case InUse:
-		return strconv.Itoa(d.db.Stats().InUse), nil
+		return string(d.db.Stats().InUse), nil
 	case MaxIdleClosed:
-		return strconv.FormatInt(d.db.Stats().MaxIdleClosed, 10), nil
+		return string(d.db.Stats().MaxIdleClosed), nil
 	case MaxLifetimeClosed:
-		return strconv.FormatInt(d.db.Stats().MaxLifetimeClosed, 10), nil
+		return string(d.db.Stats().MaxLifetimeClosed), nil
 	case MaxOpenConnections:
-		return strconv.Itoa(d.db.Stats().MaxOpenConnections), nil
+		return string(d.db.Stats().MaxOpenConnections), nil
 	case OpenConnections:
-		return strconv.Itoa(d.db.Stats().OpenConnections), nil
+		return string(d.db.Stats().OpenConnections), nil
 	case WaitCount:
-		return strconv.FormatInt(d.db.Stats().WaitCount, 10), nil
+		return string(d.db.Stats().WaitCount), nil
 	case WaitDuration:
 		return d.db.Stats().WaitDuration.String(), nil
 	default:
@@ -248,13 +194,7 @@ func (d *Database) Compact(start []byte, limit []byte) error {
 // NewBatch creates a write-only database that buffers changes to its host db
 // until a final write is called
 func (d *Database) NewBatch() ethdb.Batch {
-	return NewBatch(d.db, nil, d.BlockNumber)
+	return NewBatch(d.db, nil)
-}
-
-// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	return NewBatch(d.db, nil, d.BlockNumber)
 }
 
 // NewIterator satisfies the ethdb.Iteratee interface
@@ -292,41 +232,21 @@ func (d *Database) Ancients() (uint64, error) {
 	return 0, errNotSupported
 }
 
-// Tail satisfies the ethdb.AncientReader interface.
-// Tail returns the number of first stored item in the freezer.
-func (d *Database) Tail() (uint64, error) {
-	return 0, errNotSupported
-}
-
 // AncientSize satisfies the ethdb.AncientReader interface
 // AncientSize returns the ancient size of the specified category
 func (d *Database) AncientSize(kind string) (uint64, error) {
 	return 0, errNotSupported
 }
 
-// AncientRange retrieves all the items in a range, starting from the index 'start'.
+// AppendAncient satisfies the ethdb.AncientWriter interface
-// It will return
+// AppendAncient injects all binary blobs belong to block at the end of the append-only immutable table files
-//  - at most 'count' items,
+func (d *Database) AppendAncient(number uint64, hash, header, body, receipt, td []byte) error {
-//  - at least 1 item (even if exceeding the maxBytes), but will otherwise
-//   return as many items as fit into maxBytes.
-func (d *Database) AncientRange(kind string, start, count, maxBytes uint64) ([][]byte, error) {
-	return nil, errNotSupported
-}
-
-// ReadAncients applies the provided AncientReader function
-func (d *Database) ReadAncients(fn func(ethdb.AncientReader) error) (err error) {
 	return errNotSupported
 }
 
-// TruncateHead satisfies the ethdb.AncientWriter interface.
+// TruncateAncients satisfies the ethdb.AncientWriter interface
-// TruncateHead discards all but the first n ancient data from the ancient store.
+// TruncateAncients discards all but the first n ancient data from the ancient store
-func (d *Database) TruncateHead(n uint64) error {
+func (d *Database) TruncateAncients(n uint64) error {
-	return errNotSupported
-}
-
-// TruncateTail satisfies the ethdb.AncientWriter interface.
-// TruncateTail discards the first n ancient data from the ancient store.
-func (d *Database) TruncateTail(n uint64) error {
 	return errNotSupported
 }
 
@@ -335,15 +255,3 @@ func (d *Database) TruncateTail(n uint64) error {
 func (d *Database) Sync() error {
 	return errNotSupported
 }
-
-// MigrateTable satisfies the ethdb.AncientWriter interface.
-// MigrateTable processes and migrates entries of a given table to a new format.
-func (d *Database) MigrateTable(string, func([]byte) ([]byte, error)) error {
-	return errNotSupported
-}
-
-// NewSnapshot satisfies the ethdb.Snapshotter interface.
-// NewSnapshot creates a database snapshot based on the current state.
-func (d *Database) NewSnapshot() (ethdb.Snapshot, error) {
-	return nil, errNotSupported
-}

postgres/database_test.go

@@ -18,49 +18,34 @@ package pgipfsethdb_test
 
 import (
 	"math/big"
-	"time"
 
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/jmoiron/sqlx"
-	"github.com/mailgun/groupcache/v2"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
-	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/v4/postgres"
+	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/postgres"
 )
 
 var (
-	database        ethdb.Database
+	database     ethdb.Database
-	db              *sqlx.DB
+	db           *sqlx.DB
-	err             error
+	err          error
-	testBlockNumber = big.NewInt(1337)
+	testHeader   = types.Header{Number: big.NewInt(1337)}
-	testHeader      = types.Header{Number: testBlockNumber}
+	testValue, _ = rlp.EncodeToBytes(testHeader)
-	testValue, _    = rlp.EncodeToBytes(testHeader)
+	testEthKey   = testHeader.Hash().Bytes()
-	testEthKey      = testHeader.Hash().Bytes()
+	testMhKey, _ = pgipfsethdb.MultihashKeyFromKeccak256(testEthKey)
-	testMhKey, _    = pgipfsethdb.MultihashKeyFromKeccak256(testEthKey)
 )
 
 var _ = Describe("Database", func() {
 	BeforeEach(func() {
 		db, err = pgipfsethdb.TestDB()
 		Expect(err).ToNot(HaveOccurred())
-
+		database = pgipfsethdb.NewDatabase(db)
-		cacheConfig := pgipfsethdb.CacheConfig{
-			Name:           "db",
-			Size:           3000000, // 3MB
-			ExpiryDuration: time.Hour,
-		}
-
-		database = pgipfsethdb.NewDatabase(db, cacheConfig)
-
-		databaseWithBlock, ok := database.(*pgipfsethdb.Database)
-		Expect(ok).To(BeTrue())
-		(*databaseWithBlock).BlockNumber = testBlockNumber
 	})
 	AfterEach(func() {
-		groupcache.DeregisterGroup("db")
 		err = pgipfsethdb.ResetTestDB(db)
 		Expect(err).ToNot(HaveOccurred())
 	})
@@ -72,7 +57,9 @@ var _ = Describe("Database", func() {
 			Expect(has).ToNot(BeTrue())
 		})
 		It("returns true if a key-pair exists in the db", func() {
-			_, err = db.Exec("INSERT into public.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testMhKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testEthKey, testMhKey)
 			Expect(err).ToNot(HaveOccurred())
 			has, err := database.Has(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
@@ -87,7 +74,9 @@ var _ = Describe("Database", func() {
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 		})
 		It("returns the value associated with the key, if the pair exists", func() {
-			_, err = db.Exec("INSERT into public.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
+			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testMhKey, testValue)
+			Expect(err).ToNot(HaveOccurred())
+			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testEthKey, testMhKey)
 			Expect(err).ToNot(HaveOccurred())
 			val, err := database.Get(testEthKey)
 			Expect(err).ToNot(HaveOccurred())

postgres/db/migrations/00001_create_ipfs_blocks_table.sql

@@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS public.blocks (
+  key TEXT UNIQUE NOT NULL,
+  data BYTEA NOT NULL
+);
+
+-- +goose Down
+DROP TABLE public.blocks;

postgres/db/migrations/00002_create_eth_schema.sql

@@ -0,0 +1,5 @@
+-- +goose Up
+CREATE SCHEMA eth;
+
+-- +goose Down
+DROP SCHEMA eth;

postgres/db/migrations/00003_create_eth_key_preimages_table.sql

@@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS eth.key_preimages (
+  eth_key BYTEA UNIQUE NOT NULL,
+  ipfs_key TEXT NOT NULL REFERENCES public.blocks (key) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED
+);
+
+-- +goose Down
+DROP TABLE eth.key_preimages;

postgres/doc.md

@@ -18,7 +18,7 @@ import (
     "github.com/ethereum/go-ethereum/core/state"
     "github.com/ethereum/go-ethereum/trie"
     "github.com/jmoiron/sqlx"
-    "github.com/vulcanize/ipfs-ethdb/v4/postgres"
+    "github.com/vulcanize/ipfs-ethdb/postgres"
 )
 
 func main() {

postgres/iterator.go

@@ -21,8 +21,6 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-var _ ethdb.Iterator = &Iterator{}
-
 // Iterator is the type that satisfies the ethdb.Iterator interface for PG-IPFS Ethereum data using a direct Postgres connection
 // Iteratee interface is used in Geth for various tests, trie/sync_bloom.go (for fast sync),
 // rawdb.InspectDatabase, and the new core/state/snapshot features.

postgres/util.go

@@ -17,8 +17,8 @@
 package pgipfsethdb
 
 import (
-	blockstore "github.com/ipfs/go-ipfs-blockstore"
+	"github.com/ipfs/go-ipfs-blockstore"
-	dshelp "github.com/ipfs/go-ipfs-ds-help"
+	"github.com/ipfs/go-ipfs-ds-help"
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq" //postgres driver
 	"github.com/multiformats/go-multihash"

util.go

@@ -17,7 +17,7 @@
 package ipfsethdb
 
 import (
-	blocks "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-cid"
 	_ "github.com/lib/pq" //postgres driver
 	"github.com/multiformats/go-multihash"