Merge pull request #33 from deep-stack/pm-v4-schema-changes

Updates to use v4 schema

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"
+    "github.com/vulcanize/ipfs-ethdb/v4"
 )
 
 func main() {
@@ -71,7 +71,7 @@ func main() {
 
     database := ipfsethdb.NewDatabase(ipfsNode.Blocks)
     stateDatabase := state.NewDatabase(database)
-    stateDB, _ := state.New(common.Hash{}, stateDatabase)
+    stateDB, _ := state.New(common.Hash{}, stateDatabase, nil)
     stateDBNodeIterator := state.NewNodeIterator(stateDB)
     // do stuff with the statedb node iterator
 }

batch.go

@@ -21,8 +21,8 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru"
-	"github.com/ipfs/go-block-format"
+	blocks "github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
 )
 
@@ -30,6 +30,8 @@ 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"
+	ipfsethdb "github.com/vulcanize/ipfs-ethdb/v4"
 )
 
 var (

database.go

@@ -33,6 +33,8 @@ 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
@@ -54,6 +56,10 @@ 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
@@ -154,23 +160,25 @@ func (d *Database) NewBatch() ethdb.Batch {
 	return b
 }
 
-// NewIterator creates a binary-alphabetical iterator over the entire keyspace
+// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// contained within the key-value database.
+// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewIterator() ethdb.Iterator {
+func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	return NewIterator([]byte{}, []byte{}, d.blockService)
+	b, err := NewBatch(d.blockService, size)
+	if err != nil {
+		panic(err)
+	}
+	return b
 }
 
-// NewIteratorWithStart creates a binary-alphabetical iterator over a subset of
+// NewIterator satisfies the ethdb.Iteratee interface
-// database content starting at a particular initial key (or after, if it does
+// it creates a binary-alphabetical iterator over a subset
-// not exist).
+// of database content with a particular key prefix, starting at a particular
-func (d *Database) NewIteratorWithStart(start []byte) ethdb.Iterator {
+// initial key (or after, if it does not exist).
-	return NewIterator(start, []byte{}, d.blockService)
+//
-}
+// Note: This method assumes that the prefix is NOT part of the start, so there's
-
+// no need for the caller to prepend the prefix to the start
-// NewIteratorWithPrefix creates a binary-alphabetical iterator over a subset
+func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
-// of database content with a particular key prefix.
+	return NewIterator(start, prefix, d.blockService)
-func (d *Database) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
-	return NewIterator([]byte{}, prefix, d.blockService)
 }
 
 // Close satisfies the io.Closer interface
@@ -197,21 +205,41 @@ 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
 }
 
-// AppendAncient satisfies the ethdb.AncientWriter interface
+// AncientRange retrieves all the items in a range, starting from the index 'start'.
-// AppendAncient injects all binary blobs belong to block at the end of the append-only immutable table files
+// It will return
-func (d *Database) AppendAncient(number uint64, hash, header, body, receipt, td []byte) error {
+//  - at most 'count' items,
+//  - 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
 }
 
-// TruncateAncients satisfies the ethdb.AncientWriter interface
+// TruncateHead satisfies the ethdb.AncientWriter interface.
-// TruncateAncients discards all but the first n ancient data from the ancient store
+// TruncateHead discards all but the first n ancient data from the ancient store.
-func (d *Database) TruncateAncients(n uint64) error {
+func (d *Database) TruncateHead(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
 }
 
@@ -220,3 +248,15 @@ func (d *Database) TruncateAncients(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"
+	ipfsethdb "github.com/vulcanize/ipfs-ethdb/v4"
 )
 
 var (

go.mod

@@ -1,20 +1,22 @@
-module github.com/vulcanize/ipfs-ethdb
+module github.com/vulcanize/ipfs-ethdb/v4
 
-go 1.13
+go 1.15
 
 require (
-	github.com/ethereum/go-ethereum v1.9.10
+	github.com/btcsuite/btcd v0.22.1 // indirect
-	github.com/hashicorp/golang-lru v0.5.4
+	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
-	github.com/ipfs/go-block-format v0.0.2
+	github.com/ethereum/go-ethereum v1.10.17
+	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 v0.0.5
+	github.com/ipfs/go-cid v0.0.7
-	github.com/ipfs/go-ipfs-blockstore v1.0.0
+	github.com/ipfs/go-ipfs-blockstore v1.0.1
 	github.com/ipfs/go-ipfs-ds-help v1.0.0
 	github.com/ipfs/go-ipfs-exchange-interface v0.0.1
-	github.com/jmoiron/sqlx v1.2.0
+	github.com/jmoiron/sqlx v1.3.5
-	github.com/lib/pq v1.0.0
+	github.com/lib/pq v1.10.5
-	github.com/multiformats/go-multihash v0.0.13
+	github.com/mailgun/groupcache/v2 v2.3.0
-	github.com/onsi/ginkgo v1.8.0
+	github.com/multiformats/go-multihash v0.1.0
-	github.com/onsi/gomega v1.5.0
+	github.com/onsi/ginkgo v1.16.5
-	github.com/sirupsen/logrus v1.6.0
+	github.com/onsi/gomega v1.19.0
 )

go.sum

@@ -1,136 +1,281 @@
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-gopkg.in/olebedev/go-duktape.v3 v3.0.0-20190213234257-ec84240a7772/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
+gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
-gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200603215123-a4a8cb9d2cbc/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
-gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
+lukechampine.com/blake3 v1.1.6 h1:H3cROdztr7RCfoaTpGZFQsrqvweFLrqS73j7L7cmR5c=
+lukechampine.com/blake3 v1.1.6/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=
+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

@@ -23,6 +23,8 @@ 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"
 
-	"github.com/ipfs/go-block-format"
+	blocks "github.com/ipfs/go-block-format"
 	"github.com/ipfs/go-blockservice"
 	"github.com/ipfs/go-cid"
-	"github.com/ipfs/go-ipfs-blockstore"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
-	"github.com/ipfs/go-ipfs-exchange-interface"
+	exchange "github.com/ipfs/go-ipfs-exchange-interface"
 )
 
 var (

postgres/ancient.go

@@ -1,238 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"database/sql"
-	"fmt"
-
-	"github.com/sirupsen/logrus"
-)
-
-const (
-	// FreezerHeaderTable indicates the name of the freezer header table.
-	FreezerHeaderTable = "headers"
-
-	// FreezerHashTable indicates the name of the freezer canonical hash table.
-	FreezerHashTable = "hashes"
-
-	// FreezerBodiesTable indicates the name of the freezer block body table.
-	FreezerBodiesTable = "bodies"
-
-	// FreezerReceiptTable indicates the name of the freezer receipts table.
-	FreezerReceiptTable = "receipts"
-
-	// FreezerDifficultyTable indicates the name of the freezer total difficulty table.
-	FreezerDifficultyTable = "diffs"
-
-	// ancient append Postgres statements
-	appendAncientHeaderPgStr   = "INSERT INTO eth.ancient_headers (block_number, header) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET header = $2"
-	appendAncientHashPgStr     = "INSERT INTO eth.ancient_hashes (block_number, hash) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET hash = $2"
-	appendAncientBodyPgStr     = "INSERT INTO eth.ancient_bodies (block_number, body) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET body = $2"
-	appendAncientReceiptsPgStr = "INSERT INTO eth.ancient_receipts (block_number, receipts) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET receipts = $2"
-	appendAncientTDPgStr       = "INSERT INTO eth.ancient_tds (block_number, td) VALUES ($1, $2) ON CONFLICT (block_number) DO UPDATE SET td = $2"
-
-	// ancient truncate Postgres statements
-	truncateAncientHeaderPgStr   = "DELETE FROM eth.ancient_headers WHERE block_number > $1"
-	truncateAncientHashPgStr     = "DELETE FROM eth.ancient_hashes WHERE block_number > $1"
-	truncateAncientBodiesPgStr   = "DELETE FROM eth.ancient_bodies WHERE block_number > $1"
-	truncateAncientReceiptsPgStr = "DELETE FROM eth.ancient_receipts WHERE block_number > $1"
-	truncateAncientTDPgStr       = "DELETE FROM eth.ancient_tds WHERE block_number > $1"
-
-	// ancient size Postgres statement
-	ancientSizePgStr = "SELECT pg_total_relation_size($1)"
-
-	// ancients Postgres statement
-	ancientsPgStr = "SELECT block_number FROM eth.ancient_headers ORDER BY block_number DESC LIMIT 1"
-
-	// ancient has Postgres statements
-	hasAncientHeaderPgStr   = "SELECT exists(SELECT 1 FROM eth.ancient_headers WHERE block_number = $1)"
-	hasAncientHashPgStr     = "SELECT exists(SELECT 1 FROM eth.ancient_hashes WHERE block_number = $1)"
-	hasAncientBodyPgStr     = "SELECT exists(SELECT 1 FROM eth.ancient_bodies WHERE block_number = $1)"
-	hasAncientReceiptsPgStr = "SELECT exists(SELECT 1 FROM eth.ancient_receipts WHERE block_number = $1)"
-	hasAncientTDPgStr       = "SELECT exists(SELECT 1 FROM eth.ancient_tds WHERE block_number = $1)"
-
-	// ancient get Postgres statements
-	getAncientHeaderPgStr   = "SELECT header FROM eth.ancient_headers WHERE block_number = $1"
-	getAncientHashPgStr     = "SELECT hash FROM eth.ancient_hashes WHERE block_number = $1"
-	getAncientBodyPgStr     = "SELECT body FROM eth.ancient_bodies WHERE block_number = $1"
-	getAncientReceiptsPgStr = "SELECT receipts FROM eth.ancient_receipts WHERE block_number = $1"
-	getAncientTDPgStr       = "SELECT td FROM eth.ancient_tds WHERE block_number = $1"
-)
-
-// HasAncient satisfies the ethdb.AncientReader interface
-// HasAncient returns an indicator whether the specified data exists in the ancient store
-func (d *Database) HasAncient(kind string, number uint64) (bool, error) {
-	var pgStr string
-	switch kind {
-	case FreezerHeaderTable:
-		pgStr = hasAncientHeaderPgStr
-	case FreezerHashTable:
-		pgStr = hasAncientHashPgStr
-	case FreezerBodiesTable:
-		pgStr = hasAncientBodyPgStr
-	case FreezerReceiptTable:
-		pgStr = hasAncientReceiptsPgStr
-	case FreezerDifficultyTable:
-		pgStr = hasAncientTDPgStr
-	default:
-		return false, fmt.Errorf("unexpected ancient kind: %s", kind)
-	}
-	has := new(bool)
-	return *has, d.db.Get(has, pgStr, number)
-}
-
-// Ancient satisfies the ethdb.AncientReader interface
-// Ancient retrieves an ancient binary blob from the append-only immutable files
-func (d *Database) Ancient(kind string, number uint64) ([]byte, error) {
-	var pgStr string
-	switch kind {
-	case FreezerHeaderTable:
-		pgStr = getAncientHeaderPgStr
-	case FreezerHashTable:
-		pgStr = getAncientHashPgStr
-	case FreezerBodiesTable:
-		pgStr = getAncientBodyPgStr
-	case FreezerReceiptTable:
-		pgStr = getAncientReceiptsPgStr
-	case FreezerDifficultyTable:
-		pgStr = getAncientTDPgStr
-	default:
-		return nil, fmt.Errorf("unexpected ancient kind: %s", kind)
-	}
-	data := new([]byte)
-	return *data, d.db.Get(data, pgStr, number)
-}
-
-// Ancients satisfies the ethdb.AncientReader interface
-// Ancients returns the ancient item numbers in the ancient store
-func (d *Database) Ancients() (uint64, error) {
-	num := new(uint64)
-	if err := d.db.Get(num, ancientsPgStr); err != nil {
-		if err == sql.ErrNoRows {
-			return 0, nil
-		}
-		return 0, err
-	}
-	return *num, nil
-}
-
-// AncientSize satisfies the ethdb.AncientReader interface
-// AncientSize returns the ancient size of the specified category
-func (d *Database) AncientSize(kind string) (uint64, error) {
-	var tableName string
-	switch kind {
-	case FreezerHeaderTable:
-		tableName = "eth.ancient_headers"
-	case FreezerHashTable:
-		tableName = "eth.ancient_hashes"
-	case FreezerBodiesTable:
-		tableName = "eth.ancient_bodies"
-	case FreezerReceiptTable:
-		tableName = "eth.ancient_receipts"
-	case FreezerDifficultyTable:
-		tableName = "eth.ancient_tds"
-	default:
-		return 0, fmt.Errorf("unexpected ancient kind: %s", kind)
-	}
-	size := new(uint64)
-	return *size, d.db.Get(size, ancientSizePgStr, tableName)
-}
-
-// AppendAncient satisfies the ethdb.AncientWriter interface
-// AppendAncient injects all binary blobs belong to block at the end of the append-only immutable table files
-func (d *Database) AppendAncient(number uint64, hash, header, body, receipts, td []byte) error {
-	// append in batch
-	var err error
-	if d.ancientTx == nil {
-		d.ancientTx, err = d.db.Beginx()
-		if err != nil {
-			return err
-		}
-	}
-	defer func() {
-		if err != nil {
-			if err := d.ancientTx.Rollback(); err != nil {
-				logrus.Error(err)
-				d.ancientTx = nil
-			}
-		}
-	}()
-
-	if _, err := d.ancientTx.Exec(appendAncientHashPgStr, number, hash); err != nil {
-		return err
-	}
-	if _, err := d.ancientTx.Exec(appendAncientHeaderPgStr, number, header); err != nil {
-		return err
-	}
-	if _, err := d.ancientTx.Exec(appendAncientBodyPgStr, number, body); err != nil {
-		return err
-	}
-	if _, err := d.ancientTx.Exec(appendAncientReceiptsPgStr, number, receipts); err != nil {
-		return err
-	}
-	_, err = d.ancientTx.Exec(appendAncientTDPgStr, number, td)
-	return err
-}
-
-// TruncateAncients satisfies the ethdb.AncientWriter interface
-// TruncateAncients discards all but the first n ancient data from the ancient store
-func (d *Database) TruncateAncients(n uint64) error {
-	// truncate in batch
-	var err error
-	if d.ancientTx == nil {
-		d.ancientTx, err = d.db.Beginx()
-		if err != nil {
-			return err
-		}
-	}
-	defer func() {
-		if err != nil {
-			if err := d.ancientTx.Rollback(); err != nil {
-				logrus.Error(err)
-				d.ancientTx = nil
-			}
-		}
-	}()
-	if _, err := d.ancientTx.Exec(truncateAncientHeaderPgStr, n); err != nil {
-		return err
-	}
-	if _, err := d.ancientTx.Exec(truncateAncientHashPgStr, n); err != nil {
-		return err
-	}
-	if _, err := d.ancientTx.Exec(truncateAncientBodiesPgStr, n); err != nil {
-		return err
-	}
-	if _, err := d.ancientTx.Exec(truncateAncientReceiptsPgStr, n); err != nil {
-		return err
-	}
-	_, err = d.ancientTx.Exec(truncateAncientTDPgStr, n)
-	return err
-}
-
-// Sync satisfies the ethdb.AncientWriter interface
-// Sync flushes all in-memory ancient store data to disk
-func (d *Database) Sync() error {
-	if d.ancientTx == nil {
-		return nil
-	}
-	if err := d.ancientTx.Commit(); err != nil {
-		return err
-	}
-	d.ancientTx = nil
-	return nil
-}

postgres/ancient_test.go

@@ -1,232 +0,0 @@
-// VulcanizeDB
-// Copyright © 2019 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb_test
-
-import (
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/ethdb"
-	"github.com/ethereum/go-ethereum/rlp"
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-
-	"github.com/vulcanize/ipfs-ethdb/postgres"
-)
-
-var (
-	ancientDB                ethdb.Database
-	testBlockNumber          uint64 = 1
-	testAncientHeader               = types.Header{Number: big.NewInt(2)}
-	testAncientHeaderRLP, _         = rlp.EncodeToBytes(testHeader2)
-	testAncientHash                 = testAncientHeader.Hash().Bytes()
-	testAncientBodyBytes            = make([]byte, 10000)
-	testAncientReceiptsBytes        = make([]byte, 5000)
-	testAncientTD, _                = new(big.Int).SetString("1000000000000000000000", 10)
-	testAncientTDBytes              = testAncientTD.Bytes()
-)
-
-var _ = Describe("Ancient", func() {
-	BeforeEach(func() {
-		db, err = pgipfsethdb.TestDB()
-		Expect(err).ToNot(HaveOccurred())
-		ancientDB = pgipfsethdb.NewDatabase(db)
-
-	})
-	AfterEach(func() {
-		err = pgipfsethdb.ResetTestDB(db)
-		Expect(err).ToNot(HaveOccurred())
-	})
-
-	Describe("AppendAncient/Sync/Has", func() {
-		It("adds eth objects to the Ancient database and returns whether or not an ancient record exists", func() {
-			hasAncient(testBlockNumber, false)
-
-			err = ancientDB.AppendAncient(testBlockNumber, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
-			Expect(err).ToNot(HaveOccurred())
-
-			hasAncient(testBlockNumber, false)
-
-			err = ancientDB.Sync()
-			Expect(err).ToNot(HaveOccurred())
-
-			hasAncient(testBlockNumber, true)
-		})
-	})
-
-	Describe("AppendAncient/Sync/Ancient", func() {
-		It("adds the eth objects to the Ancient database and returns the ancient objects on request", func() {
-			hasAncient(testBlockNumber, false)
-
-			_, err := ancientDB.Ancient(pgipfsethdb.FreezerHeaderTable, testBlockNumber)
-			Expect(err).To(HaveOccurred())
-			_, err = ancientDB.Ancient(pgipfsethdb.FreezerHashTable, testBlockNumber)
-			Expect(err).To(HaveOccurred())
-			_, err = ancientDB.Ancient(pgipfsethdb.FreezerBodiesTable, testBlockNumber)
-			Expect(err).To(HaveOccurred())
-			_, err = ancientDB.Ancient(pgipfsethdb.FreezerReceiptTable, testBlockNumber)
-			Expect(err).To(HaveOccurred())
-			_, err = ancientDB.Ancient(pgipfsethdb.FreezerDifficultyTable, testBlockNumber)
-			Expect(err).To(HaveOccurred())
-
-			err = ancientDB.AppendAncient(testBlockNumber, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
-			Expect(err).ToNot(HaveOccurred())
-			err = ancientDB.Sync()
-			Expect(err).ToNot(HaveOccurred())
-
-			hasAncient(testBlockNumber, true)
-
-			ancientHeader, err := ancientDB.Ancient(pgipfsethdb.FreezerHeaderTable, testBlockNumber)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientHeader).To(Equal(testAncientHeaderRLP))
-
-			ancientHash, err := ancientDB.Ancient(pgipfsethdb.FreezerHashTable, testBlockNumber)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientHash).To(Equal(testAncientHash))
-
-			ancientBody, err := ancientDB.Ancient(pgipfsethdb.FreezerBodiesTable, testBlockNumber)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientBody).To(Equal(testAncientBodyBytes))
-
-			ancientReceipts, err := ancientDB.Ancient(pgipfsethdb.FreezerReceiptTable, testBlockNumber)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientReceipts).To(Equal(testAncientReceiptsBytes))
-
-			ancientTD, err := ancientDB.Ancient(pgipfsethdb.FreezerDifficultyTable, testBlockNumber)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientTD).To(Equal(testAncientTDBytes))
-		})
-	})
-
-	Describe("AppendAncient/Sync/Ancients", func() {
-		It("returns the height of the ancient database", func() {
-			ancients, err := ancientDB.Ancients()
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancients).To(Equal(uint64(0)))
-
-			for i := uint64(0); i <= 100; i++ {
-				hasAncient(i, false)
-				err = ancientDB.AppendAncient(i, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
-				Expect(err).ToNot(HaveOccurred())
-			}
-
-			err = ancientDB.Sync()
-			Expect(err).ToNot(HaveOccurred())
-
-			for i := uint64(0); i <= 100; i++ {
-				hasAncient(i, true)
-			}
-			ancients, err = ancientDB.Ancients()
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancients).To(Equal(uint64(100)))
-		})
-	})
-
-	Describe("AppendAncient/Truncate/Sync", func() {
-		It("truncates the ancient database to the provided height", func() {
-			for i := uint64(0); i <= 100; i++ {
-				hasAncient(i, false)
-				err = ancientDB.AppendAncient(i, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
-				Expect(err).ToNot(HaveOccurred())
-			}
-
-			err = ancientDB.Sync()
-			Expect(err).ToNot(HaveOccurred())
-
-			err = ancientDB.TruncateAncients(50)
-			Expect(err).ToNot(HaveOccurred())
-
-			for i := uint64(0); i <= 100; i++ {
-				hasAncient(i, true)
-			}
-
-			ancients, err := ancientDB.Ancients()
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancients).To(Equal(uint64(100)))
-
-			err = ancientDB.Sync()
-			Expect(err).ToNot(HaveOccurred())
-
-			for i := uint64(0); i <= 100; i++ {
-				if i <= 50 {
-					hasAncient(i, true)
-				} else {
-					hasAncient(i, false)
-				}
-			}
-
-			ancients, err = ancientDB.Ancients()
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancients).To(Equal(uint64(50)))
-		})
-	})
-
-	Describe("AppendAncient/Sync/AncientSize", func() {
-		It("adds the eth objects to the Ancient database and returns the ancient objects on request", func() {
-			for i := uint64(0); i <= 100; i++ {
-				hasAncient(i, false)
-				err = ancientDB.AppendAncient(i, testAncientHash, testAncientHeaderRLP, testAncientBodyBytes, testAncientReceiptsBytes, testAncientTDBytes)
-				Expect(err).ToNot(HaveOccurred())
-			}
-
-			err = ancientDB.Sync()
-			Expect(err).ToNot(HaveOccurred())
-
-			for i := uint64(0); i <= 100; i++ {
-				hasAncient(i, true)
-			}
-
-			ancientHeaderSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerHeaderTable)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientHeaderSize).To(Equal(uint64(106496)))
-
-			ancientHashSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerHashTable)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientHashSize).To(Equal(uint64(32768)))
-
-			ancientBodySize, err := ancientDB.AncientSize(pgipfsethdb.FreezerBodiesTable)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientBodySize).To(Equal(uint64(73728)))
-
-			ancientReceiptsSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerReceiptTable)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientReceiptsSize).To(Equal(uint64(65536)))
-
-			ancientTDSize, err := ancientDB.AncientSize(pgipfsethdb.FreezerDifficultyTable)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(ancientTDSize).To(Equal(uint64(32768)))
-		})
-	})
-})
-
-func hasAncient(blockNumber uint64, shouldHave bool) {
-	has, err := ancientDB.HasAncient(pgipfsethdb.FreezerHeaderTable, blockNumber)
-	Expect(err).ToNot(HaveOccurred())
-	Expect(has).To(Equal(shouldHave))
-	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerHashTable, blockNumber)
-	Expect(err).ToNot(HaveOccurred())
-	Expect(has).To(Equal(shouldHave))
-	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerBodiesTable, blockNumber)
-	Expect(err).ToNot(HaveOccurred())
-	Expect(has).To(Equal(shouldHave))
-	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerReceiptTable, blockNumber)
-	Expect(err).ToNot(HaveOccurred())
-	Expect(has).To(Equal(shouldHave))
-	has, err = ancientDB.HasAncient(pgipfsethdb.FreezerDifficultyTable, blockNumber)
-	Expect(err).ToNot(HaveOccurred())
-	Expect(has).To(Equal(shouldHave))
-}

postgres/batch.go

@@ -17,25 +17,29 @@
 package pgipfsethdb
 
 import (
-	"github.com/ethereum/go-ethereum/common"
+	"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
+	db        *sqlx.DB
-	tx          *sqlx.Tx
+	tx        *sqlx.Tx
-	valueSize   int
+	valueSize int
-	replayCache map[string][]byte
+
+	blockNumber *big.Int
 }
 
 // NewBatch returns a ethdb.Batch interface for PG-IPFS
-func NewBatch(db *sqlx.DB, tx *sqlx.Tx) ethdb.Batch {
+func NewBatch(db *sqlx.DB, tx *sqlx.Tx, blockNumber *big.Int) ethdb.Batch {
 	b := &Batch{
 		db:          db,
 		tx:          tx,
-		replayCache: make(map[string][]byte),
+		blockNumber: blockNumber,
 	}
 	if tx == nil {
 		b.Reset()
@@ -47,30 +51,26 @@ func NewBatch(db *sqlx.DB, tx *sqlx.Tx) ethdb.Batch {
 // Put inserts the given value into the key-value data store
 // Key is expected to be the keccak256 hash of value
 func (b *Batch) Put(key []byte, value []byte) (err error) {
-	dsKey, prefix, err := DatastoreKeyFromGethKey(key)
+	mhKey, err := MultihashKeyFromKeccak256(key)
 	if err != nil {
 		return err
 	}
-	if _, err = b.tx.Exec(putPgStr, dsKey, value); err != nil {
+	if _, err = b.tx.Exec(putPgStr, mhKey, value, b.blockNumber.Uint64()); err != nil {
-		return err
-	}
-	if _, err = b.tx.Exec(putPreimagePgStr, key, dsKey, prefix); err != nil {
 		return err
 	}
 	b.valueSize += len(value)
-	b.replayCache[common.Bytes2Hex(key)] = value
 	return nil
 }
 
 // Delete satisfies the ethdb.Batch interface
 // Delete removes the key from the key-value data store
 func (b *Batch) Delete(key []byte) (err error) {
-	_, err = b.tx.Exec(deletePgStr, key)
+	mhKey, err := MultihashKeyFromKeccak256(key)
 	if err != nil {
 		return err
 	}
-	delete(b.replayCache, common.Bytes2Hex(key))
+	_, err = b.tx.Exec(deletePgStr, mhKey)
-	return nil
+	return err
 }
 
 // ValueSize satisfies the ethdb.Batch interface
@@ -82,32 +82,17 @@ func (b *Batch) ValueSize() int {
 
 // Write satisfies the ethdb.Batch interface
 // Write flushes any accumulated data to disk
-// Reset should be called after every write
 func (b *Batch) Write() error {
 	if b.tx == nil {
 		return nil
 	}
-	if err := b.tx.Commit(); err != nil {
+	return b.tx.Commit()
-		return err
-	}
-	b.replayCache = nil
-	return nil
 }
 
 // Replay satisfies the ethdb.Batch interface
 // Replay replays the batch contents
 func (b *Batch) Replay(w ethdb.KeyValueWriter) error {
-	if b.tx != nil {
+	return errNotSupported
-		b.tx.Rollback()
-		b.tx = nil
-	}
-	for key, value := range b.replayCache {
-		if err := w.Put(common.Hex2Bytes(key), value); err != nil {
-			return err
-		}
-	}
-	b.replayCache = nil
-	return nil
 }
 
 // Reset satisfies the ethdb.Batch interface
@@ -119,6 +104,5 @@ func (b *Batch) Reset() {
 	if err != nil {
 		panic(err)
 	}
-	b.replayCache = make(map[string][]byte)
 	b.valueSize = 0
 }

postgres/batch_test.go

@@ -18,55 +18,70 @@ 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/postgres"
+	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/v4/postgres"
 )
 
 var (
-	batch             ethdb.Batch
+	batch         ethdb.Batch
-	testHeader2       = types.Header{Number: big.NewInt(2)}
+	testHeader2   = types.Header{Number: big.NewInt(2)}
-	testValue2, _     = rlp.EncodeToBytes(testHeader2)
+	testValue2, _ = rlp.EncodeToBytes(testHeader2)
-	testKeccakEthKey2 = testHeader2.Hash().Bytes()
+	testEthKey2   = testHeader2.Hash().Bytes()
 )
 
 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())
 	})
 
 	Describe("Put/Write", func() {
 		It("adds the key-value pair to the batch", func() {
-			_, err = database.Get(testKeccakEthKey)
+			_, err = database.Get(testEthKey)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testKeccakEthKey2)
+			_, err = database.Get(testEthKey2)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 
-			err = batch.Put(testKeccakEthKey, testValue)
+			err = batch.Put(testEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testKeccakEthKey2, testValue2)
+			err = batch.Put(testEthKey2, testValue2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())
 
-			val, err := database.Get(testKeccakEthKey)
+			val, err := database.Get(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val).To(Equal(testValue))
-			val2, err := database.Get(testKeccakEthKey2)
+			val2, err := database.Get(testEthKey2)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val2).To(Equal(testValue2))
 		})
@@ -74,25 +89,25 @@ var _ = Describe("Batch", func() {
 
 	Describe("Delete/Reset/Write", func() {
 		It("deletes the key-value pair in the batch", func() {
-			err = batch.Put(testKeccakEthKey, testValue)
+			err = batch.Put(testEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testKeccakEthKey2, testValue2)
+			err = batch.Put(testEthKey2, testValue2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())
 
 			batch.Reset()
-			err = batch.Delete(testKeccakEthKey)
+			err = batch.Delete(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Delete(testKeccakEthKey2)
+			err = batch.Delete(testEthKey2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())
 
-			_, err = database.Get(testKeccakEthKey)
+			_, err = database.Get(testEthKey)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testKeccakEthKey2)
+			_, err = database.Get(testEthKey2)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 		})
@@ -100,9 +115,9 @@ var _ = Describe("Batch", func() {
 
 	Describe("ValueSize/Reset", func() {
 		It("returns the size of data in the batch queued for write", func() {
-			err = batch.Put(testKeccakEthKey, testValue)
+			err = batch.Put(testEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testKeccakEthKey2, testValue2)
+			err = batch.Put(testEthKey2, testValue2)
 			Expect(err).ToNot(HaveOccurred())
 			err = batch.Write()
 			Expect(err).ToNot(HaveOccurred())
@@ -115,30 +130,4 @@ var _ = Describe("Batch", func() {
 			Expect(size).To(Equal(0))
 		})
 	})
-
-	Describe("Replay", func() {
-		It("returns the size of data in the batch queued for write", func() {
-			err = batch.Put(testKeccakEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			err = batch.Put(testKeccakEthKey2, testValue2)
-			Expect(err).ToNot(HaveOccurred())
-
-			_, err = database.Get(testKeccakEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-			_, err = database.Get(testKeccakEthKey2)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = batch.Replay(database)
-			Expect(err).ToNot(HaveOccurred())
-
-			val, err := database.Get(testKeccakEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-			val2, err := database.Get(testKeccakEthKey2)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val2).To(Equal(testValue2))
-		})
-	})
 })

postgres/database.go

@@ -17,94 +17,150 @@
 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"
 )
 
-const (
+var errNotSupported = errors.New("this operation is not supported")
-	hasPgStr         = "SELECT exists(SELECT 1 FROM eth.key_preimages WHERE eth_key = $1)"
+
-	getPgStr         = "SELECT data FROM public.blocks INNER JOIN eth.key_preimages ON (ipfs_key = blocks.key) WHERE eth_key = $1"
+var (
-	putPgStr         = "INSERT INTO public.blocks (key, data) VALUES ($1, $2) ON CONFLICT (key) DO NOTHING"
+	hasPgStr    = "SELECT exists(select 1 from public.blocks WHERE key = $1 LIMIT 1)"
-	putPreimagePgStr = "INSERT INTO eth.key_preimages (eth_key, ipfs_key, prefix) VALUES ($1, $2, $3) ON CONFLICT (eth_key) DO UPDATE SET (ipfs_key, prefix) = ($2, $3)"
+	getPgStr    = "SELECT data FROM public.blocks WHERE key = $1 LIMIT 1"
-	deletePgStr      = "DELETE FROM public.blocks USING eth.key_preimages WHERE ipfs_key = blocks.key AND eth_key = $1"
+	putPgStr    = "INSERT INTO public.blocks (key, data, block_number) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
-	dbSizePgStr      = "SELECT pg_database_size(current_database())"
+	deletePgStr = "DELETE FROM public.blocks WHERE 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
-	ancientTx *sqlx.Tx
+	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) ethdb.KeyValueStore {
+func NewKeyValueStore(db *sqlx.DB, cacheConfig CacheConfig) ethdb.KeyValueStore {
-	return &Database{
+	database := Database{db: db}
-		db: db,
+	database.InitCache(cacheConfig)
-	}
+
+	return &database
 }
 
 // NewDatabase returns a ethdb.Database interface for PG-IPFS
-func NewDatabase(db *sqlx.DB) ethdb.Database {
+func NewDatabase(db *sqlx.DB, cacheConfig CacheConfig) ethdb.Database {
-	return &Database{
+	database := Database{db: db}
-		db: db,
+	database.InitCache(cacheConfig)
-	}
+
+	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, key)
+	return exists, d.db.Get(&exists, hasPgStr, mhKey)
+}
+
+// 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.db.Get(&data, getPgStr, key)
+	return data, d.cache.Get(ctx, mhKey, groupcache.AllocatingByteSliceSink(&data))
 }
 
 // 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 {
-	dsKey, prefix, err := DatastoreKeyFromGethKey(key)
+	mhKey, err := MultihashKeyFromKeccak256(key)
 	if err != nil {
 		return err
 	}
-	tx, err := d.db.Beginx()
+	_, err = d.db.Exec(putPgStr, mhKey, value, d.BlockNumber.Uint64())
-	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, dsKey, value); err != nil {
-		return err
-	}
-	_, err = tx.Exec(putPreimagePgStr, key, dsKey, prefix)
 	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 {
-	_, err := d.db.Exec(deletePgStr, key)
+	mhKey, err := MultihashKeyFromKeccak256(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
 }
 
@@ -162,19 +218,19 @@ func (d *Database) Stat(property string) (string, error) {
 		var byteSize string
 		return byteSize, d.db.Get(&byteSize, dbSizePgStr)
 	case Idle:
-		return string(d.db.Stats().Idle), nil
+		return strconv.Itoa(d.db.Stats().Idle), nil
 	case InUse:
-		return string(d.db.Stats().InUse), nil
+		return strconv.Itoa(d.db.Stats().InUse), nil
 	case MaxIdleClosed:
-		return string(d.db.Stats().MaxIdleClosed), nil
+		return strconv.FormatInt(d.db.Stats().MaxIdleClosed, 10), nil
 	case MaxLifetimeClosed:
-		return string(d.db.Stats().MaxLifetimeClosed), nil
+		return strconv.FormatInt(d.db.Stats().MaxLifetimeClosed, 10), nil
 	case MaxOpenConnections:
-		return string(d.db.Stats().MaxOpenConnections), nil
+		return strconv.Itoa(d.db.Stats().MaxOpenConnections), nil
 	case OpenConnections:
-		return string(d.db.Stats().OpenConnections), nil
+		return strconv.Itoa(d.db.Stats().OpenConnections), nil
 	case WaitCount:
-		return string(d.db.Stats().WaitCount), nil
+		return strconv.FormatInt(d.db.Stats().WaitCount, 10), nil
 	case WaitDuration:
 		return d.db.Stats().WaitDuration.String(), nil
 	default:
@@ -185,34 +241,31 @@ func (d *Database) Stat(property string) (string, error) {
 // Compact satisfies the ethdb.Compacter interface
 // Compact flattens the underlying data store for the given key range
 func (d *Database) Compact(start []byte, limit []byte) error {
-	// this leveldb functionality doesn't translate to Postgres
+	return errNotSupported
-	return nil
 }
 
 // NewBatch satisfies the ethdb.Batcher interface
 // 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)
+	return NewBatch(d.db, nil, d.BlockNumber)
 }
 
-// NewIterator creates a binary-alphabetical iterator over the entire keyspace
+// NewBatchWithSize satisfies the ethdb.Batcher interface.
-// contained within the key-value database.
+// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
-func (d *Database) NewIterator() ethdb.Iterator {
+func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
-	return NewIterator(nil, nil, d.db)
+	return NewBatch(d.db, nil, d.BlockNumber)
 }
 
-// NewIteratorWithStart creates a binary-alphabetical iterator over a subset of
+// NewIterator satisfies the ethdb.Iteratee interface
-// database content starting at a particular initial key (or after, if it does
+// it creates a binary-alphabetical iterator over a subset
-// not exist).
+// of database content with a particular key prefix, starting at a particular
-func (d *Database) NewIteratorWithStart(start []byte) ethdb.Iterator {
+// initial key (or after, if it does not exist).
-	return NewIterator(start, nil, d.db)
+//
-}
+// Note: This method assumes that the prefix is NOT part of the start, so there's
-
+// no need for the caller to prepend the prefix to the start
-// NewIteratorWithPrefix creates a binary-alphabetical iterator over a subset
+func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
-// of database content with a particular key prefix.
+	return NewIterator(start, prefix, d.db)
-func (d *Database) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
-	return NewIterator(nil, prefix, d.db)
 }
 
 // Close satisfies the io.Closer interface
@@ -220,3 +273,77 @@ func (d *Database) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
 func (d *Database) Close() error {
 	return d.db.DB.Close()
 }
+
+// HasAncient satisfies the ethdb.AncientReader interface
+// HasAncient returns an indicator whether the specified data exists in the ancient store
+func (d *Database) HasAncient(kind string, number uint64) (bool, error) {
+	return false, errNotSupported
+}
+
+// Ancient satisfies the ethdb.AncientReader interface
+// Ancient retrieves an ancient binary blob from the append-only immutable files
+func (d *Database) Ancient(kind string, number uint64) ([]byte, error) {
+	return nil, errNotSupported
+}
+
+// Ancients satisfies the ethdb.AncientReader interface
+// Ancients returns the ancient item numbers in the ancient store
+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'.
+// It will return
+//  - at most 'count' items,
+//  - 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.
+// TruncateHead discards all but the first n ancient data from the ancient store.
+func (d *Database) TruncateHead(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
+}
+
+// Sync satisfies the ethdb.AncientWriter interface
+// Sync flushes all in-memory ancient store data to disk
+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

@@ -18,368 +18,108 @@ package pgipfsethdb_test
 
 import (
 	"math/big"
-
+	"time"
-	"github.com/ethereum/go-ethereum/common"
 
 	"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/postgres"
+	pgipfsethdb "github.com/vulcanize/ipfs-ethdb/v4/postgres"
 )
 
 var (
-	database         ethdb.Database
+	database        ethdb.Database
-	db               *sqlx.DB
+	db              *sqlx.DB
-	err              error
+	err             error
-	testHeader       = types.Header{Number: big.NewInt(1337)}
+	testBlockNumber = big.NewInt(1337)
-	testValue, _     = rlp.EncodeToBytes(testHeader)
+	testHeader      = types.Header{Number: testBlockNumber}
-	testKeccakEthKey = testHeader.Hash().Bytes()
+	testValue, _    = rlp.EncodeToBytes(testHeader)
-	testMhKey, _     = pgipfsethdb.MultihashKeyFromKeccak256(testKeccakEthKey)
+	testEthKey      = testHeader.Hash().Bytes()
-
+	testMhKey, _    = pgipfsethdb.MultihashKeyFromKeccak256(testEthKey)
-	testPrefixedEthKey = append(append([]byte("prefix"), pgipfsethdb.KeyDelineation...), testKeccakEthKey...)
-	testPrefixedDsKey  = common.Bytes2Hex(testPrefixedEthKey)
-
-	testSuffixedEthKey = append(append(testPrefixedEthKey, pgipfsethdb.KeyDelineation...), []byte("suffix")...)
-	testSuffixedDsKey  = common.Bytes2Hex(testSuffixedEthKey)
-
-	testHeaderEthKey = append(append(append(append(pgipfsethdb.HeaderPrefix, pgipfsethdb.KeyDelineation...),
-		[]byte("number")...), pgipfsethdb.NumberDelineation...), testKeccakEthKey...)
-	testHeaderDsKey = testMhKey
-
-	testPreimageEthKey = append(append(pgipfsethdb.PreimagePrefix, pgipfsethdb.KeyDelineation...), testKeccakEthKey...)
-	testPreimageDsKey  = testMhKey
 )
 
 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())
 	})
 
-	Describe("Has - Keccak keys", func() {
+	Describe("Has", func() {
 		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testKeccakEthKey)
+			has, err := database.Has(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			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) VALUES ($1, $2)", testMhKey, testValue)
+			_, err = db.Exec("INSERT into public.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
 			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testKeccakEthKey, testMhKey)
+			has, err := database.Has(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testKeccakEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(has).To(BeTrue())
 		})
 	})
 
-	Describe("Has - Prefixed keys", func() {
+	Describe("Get", func() {
-		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testPrefixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			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) VALUES ($1, $2)", testPrefixedDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPrefixedEthKey, testPrefixedDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testPrefixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).To(BeTrue())
-		})
-	})
-
-	Describe("Has - Suffixed keys", func() {
-		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testSuffixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			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) VALUES ($1, $2)", testSuffixedDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testSuffixedEthKey, testSuffixedDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testSuffixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).To(BeTrue())
-		})
-	})
-
-	Describe("Has - Header keys", func() {
-		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testHeaderEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			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) VALUES ($1, $2)", testHeaderDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testHeaderEthKey, testHeaderDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testHeaderEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).To(BeTrue())
-		})
-	})
-
-	Describe("Has - Preimage keys", func() {
-		It("returns false if a key-pair doesn't exist in the db", func() {
-			has, err := database.Has(testPreimageEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			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) VALUES ($1, $2)", testPreimageDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPreimageEthKey, testPreimageDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			has, err := database.Has(testPreimageEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(has).To(BeTrue())
-		})
-	})
-
-	Describe("Get - Keccak keys", func() {
 		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testKeccakEthKey)
+			_, err = database.Get(testEthKey)
 			Expect(err).To(HaveOccurred())
 			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) VALUES ($1, $2)", testMhKey, testValue)
+			_, err = db.Exec("INSERT into public.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
 			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testKeccakEthKey, testMhKey)
+			val, err := database.Get(testEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testKeccakEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val).To(Equal(testValue))
 		})
 	})
 
-	Describe("Get - Prefixed keys", func() {
+	Describe("Put", func() {
-		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testPrefixedEthKey)
-			Expect(err).To(HaveOccurred())
-			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) VALUES ($1, $2)", testPrefixedDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPrefixedEthKey, testPrefixedDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testPrefixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Get - Suffixed keys", func() {
-		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testSuffixedEthKey)
-			Expect(err).To(HaveOccurred())
-			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) VALUES ($1, $2)", testSuffixedDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testSuffixedEthKey, testSuffixedDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testSuffixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Get - Header keys", func() {
-		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testHeaderEthKey)
-			Expect(err).To(HaveOccurred())
-			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) VALUES ($1, $2)", testHeaderDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testHeaderEthKey, testHeaderDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testHeaderEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Get - Preimage keys", func() {
-		It("throws an err if the key-pair doesn't exist in the db", func() {
-			_, err = database.Get(testPreimageEthKey)
-			Expect(err).To(HaveOccurred())
-			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) VALUES ($1, $2)", testPreimageDsKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = db.Exec("INSERT into eth.key_preimages (eth_key, ipfs_key) VALUES ($1, $2)", testPreimageEthKey, testPreimageDsKey)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testPreimageEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Put - Keccak keys", func() {
 		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testKeccakEthKey)
+			_, err = database.Get(testEthKey)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 
-			err = database.Put(testKeccakEthKey, testValue)
+			err = database.Put(testEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testKeccakEthKey)
+			val, err := database.Get(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val).To(Equal(testValue))
 		})
 	})
 
-	Describe("Put - Prefixed keys", func() {
+	Describe("Delete", func() {
-		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testPrefixedEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = database.Put(testPrefixedEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testPrefixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Put - Suffixed keys", func() {
-		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testSuffixedEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = database.Put(testSuffixedEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testSuffixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Put - Header keys", func() {
-		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testHeaderEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = database.Put(testHeaderEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testHeaderEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Put - Preimage keys", func() {
-		It("persists the key-value pair in the database", func() {
-			_, err = database.Get(testPreimageEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-
-			err = database.Put(testPreimageEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testPreimageEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-		})
-	})
-
-	Describe("Delete - Keccak keys", func() {
 		It("removes the key-value pair from the database", func() {
-			err = database.Put(testKeccakEthKey, testValue)
+			err = database.Put(testEthKey, testValue)
 			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testKeccakEthKey)
+			val, err := database.Get(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(val).To(Equal(testValue))
 
-			err = database.Delete(testKeccakEthKey)
+			err = database.Delete(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testKeccakEthKey)
+			_, err = database.Get(testEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-
-	Describe("Delete - Prefixed keys", func() {
-		It("removes the key-value pair from the database", func() {
-			err = database.Put(testPrefixedEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testPrefixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-
-			err = database.Delete(testPrefixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testPrefixedEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-
-	Describe("Delete - Suffixed keys", func() {
-		It("removes the key-value pair from the database", func() {
-			err = database.Put(testSuffixedEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testSuffixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-
-			err = database.Delete(testSuffixedEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testSuffixedEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-
-	Describe("Delete - Header keys", func() {
-		It("removes the key-value pair from the database", func() {
-			err = database.Put(testHeaderEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testHeaderEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-
-			err = database.Delete(testHeaderEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testHeaderEthKey)
-			Expect(err).To(HaveOccurred())
-			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
-		})
-	})
-
-	Describe("Delete - Preimage keys", func() {
-		It("removes the key-value pair from the database", func() {
-			err = database.Put(testPreimageEthKey, testValue)
-			Expect(err).ToNot(HaveOccurred())
-			val, err := database.Get(testPreimageEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			Expect(val).To(Equal(testValue))
-
-			err = database.Delete(testPreimageEthKey)
-			Expect(err).ToNot(HaveOccurred())
-			_, err = database.Get(testPreimageEthKey)
 			Expect(err).To(HaveOccurred())
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 		})

postgres/db/migrations/00001_create_ipfs_blocks_table.sql

@@ -1,8 +0,0 @@
--- +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

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

postgres/db/migrations/00003_create_eth_key_preimages_table.sql

@@ -1,9 +0,0 @@
--- +goose Up
-CREATE TABLE IF NOT EXISTS eth.key_preimages (
-  eth_key BYTEA UNIQUE NOT NULL,
-  prefix BYTEA,
-  ipfs_key TEXT NOT NULL REFERENCES public.blocks (key) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED
-);
-
--- +goose Down
-DROP TABLE eth.key_preimages;

postgres/db/migrations/00004_create_eth_ancient_headers_table.sql

@@ -1,8 +0,0 @@
--- +goose Up
-CREATE TABLE IF NOT EXISTS eth.ancient_headers (
-  block_number BIGINT UNIQUE NOT NULL,
-  header BYTEA NOT NULL
-);
-
--- +goose Down
-DROP TABLE eth.ancient_headers;

postgres/db/migrations/00005_create_eth_ancient_hashes_table.sql

@@ -1,8 +0,0 @@
--- +goose Up
-CREATE TABLE IF NOT EXISTS eth.ancient_hashes (
-  block_number BIGINT UNIQUE NOT NULL,
-  hash BYTEA NOT NULL
-);
-
--- +goose Down
-DROP TABLE eth.ancient_hashes;

postgres/db/migrations/00006_create_eth_ancient_bodies_table.sql

@@ -1,8 +0,0 @@
--- +goose Up
-CREATE TABLE IF NOT EXISTS eth.ancient_bodies (
-  block_number BIGINT UNIQUE NOT NULL,
-  body BYTEA NOT NULL
-);
-
--- +goose Down
-DROP TABLE eth.ancient_bodies;

postgres/db/migrations/00007_create_eth_ancient_receipts_table.sql

@@ -1,8 +0,0 @@
--- +goose Up
-CREATE TABLE IF NOT EXISTS eth.ancient_receipts (
-  block_number BIGINT UNIQUE NOT NULL,
-  receipts BYTEA NOT NULL
-);
-
--- +goose Down
-DROP TABLE eth.ancient_receipts;

postgres/db/migrations/00008_create_eth_ancient_tds_table.sql

@@ -1,8 +0,0 @@
--- +goose Up
-CREATE TABLE IF NOT EXISTS eth.ancient_tds (
-  block_number BIGINT UNIQUE NOT NULL,
-  td BYTEA NOT NULL
-);
-
--- +goose Down
-DROP TABLE eth.ancient_tds;

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/postgres"
+    "github.com/vulcanize/ipfs-ethdb/v4/postgres"
 )
 
 func main() {
@@ -33,7 +33,7 @@ func main() {
 
     database := pgipfsethdb.NewDatabase(db)
     stateDatabase := state.NewDatabase(database)
-    stateDB, _ := state.New(common.Hash{}, stateDatabase)
+    stateDB, _ := state.New(common.Hash{}, stateDatabase, nil)
     stateDBNodeIterator := state.NewNodeIterator(stateDB)
     // do stuff with the statedb node iterator
 }

postgres/iterator.go

@@ -21,31 +21,17 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-const (
+var _ ethdb.Iterator = &Iterator{}
-	initPgStr = `SELECT eth_key, data FROM public.blocks
-				INNER JOIN eth.key_preimages ON (ipfs_key = key)
-				WHERE eth_key = $1`
-	nextPgStr = `SELECT eth_key, data FROM public.blocks
-				INNER JOIN eth.key_preimages ON (ipfs_key = key)
-				WHERE eth_key > $1
-				ORDER BY eth_key LIMIT 1`
-	nextPgStrWithPrefix = `SELECT eth_key, data FROM public.blocks
-				INNER JOIN eth.key_preimages ON (ipfs_key = key)
-				WHERE eth_key > $1 AND prefix = $2 
-				ORDER BY eth_key LIMIT 1`
-)
-
-type nextModel struct {
-	Key   []byte `db:"eth_key"`
-	Value []byte `db:"data"`
-}
 
 // 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.
+// This should not be confused with trie.NodeIterator or state.NodeIteraor (which can be constructed
+// from the ethdb.KeyValueStoreand ethdb.Database interfaces)
 type Iterator struct {
-	db                               *sqlx.DB
+	db                 *sqlx.DB
-	currentKey, prefix, currentValue []byte
+	currentKey, prefix []byte
-	err                              error
+	err                error
-	init                             bool
 }
 
 // NewIterator returns an ethdb.Iterator interface for PG-IPFS
@@ -54,7 +40,6 @@ func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
 		db:         db,
 		prefix:     prefix,
 		currentKey: start,
-		init:       start != nil,
 	}
 }
 
@@ -62,26 +47,9 @@ func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
 // Next moves the iterator to the next key/value pair
 // It returns whether the iterator is exhausted
 func (i *Iterator) Next() bool {
-	next := new(nextModel)
+	// this is complicated by the ipfs db keys not being the keccak256 hashes
-	if i.init {
+	// go-ethereum usage of this method expects the iteration to occur over keccak256 keys
-		i.init = false
+	panic("implement me: Next")
-		if err := i.db.Get(next, initPgStr, i.currentKey); err != nil {
-			i.currentKey, i.currentValue, i.err = nil, nil, err
-			return false
-		}
-	} else if i.prefix != nil {
-		if err := i.db.Get(next, nextPgStrWithPrefix, i.currentKey, i.prefix); err != nil {
-			i.currentKey, i.currentValue, i.err = nil, nil, err
-			return false
-		}
-	} else {
-		if err := i.db.Get(next, nextPgStr, i.currentKey); err != nil {
-			i.currentKey, i.currentValue, i.err = nil, nil, err
-			return false
-		}
-	}
-	i.currentKey, i.currentValue, i.err = next.Key, next.Value, nil
-	return true
 }
 
 // Error satisfies the ethdb.Iterator interface
@@ -104,12 +72,19 @@ func (i *Iterator) Key() []byte {
 // The caller should not modify the contents of the returned slice
 // and its contents may change on the next call to Next
 func (i *Iterator) Value() []byte {
-	return i.currentValue
+	mhKey, err := MultihashKeyFromKeccak256(i.currentKey)
+	if err != nil {
+		i.err = err
+		return nil
+	}
+	var data []byte
+	i.err = i.db.Get(&data, getPgStr, mhKey)
+	return data
 }
 
 // Release satisfies the ethdb.Iterator interface
 // Release releases associated resources
 // Release should always succeed and can be called multiple times without causing error
 func (i *Iterator) Release() {
-	i.db, i.currentKey, i.currentValue, i.err, i.prefix = nil, nil, nil, nil, nil
+	i.db.Close()
 }

postgres/iterator_test.go

@@ -1,513 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb_test
-
-import (
-	"database/sql"
-
-	"github.com/ethereum/go-ethereum/ethdb"
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-
-	"github.com/vulcanize/ipfs-ethdb/postgres"
-)
-
-var (
-	iterator            ethdb.Iterator
-	testPrefix          = []byte("testPrefix")
-	testEthKey1         = []byte{'\x01'}
-	testEthKey2         = []byte{'\x01', '\x01'}
-	testEthKey3         = []byte{'\x01', '\x02'}
-	testEthKey4         = []byte{'\x01', '\x0e'}
-	testEthKey5         = []byte{'\x01', '\x02', '\x01'}
-	testEthKey6         = []byte{'\x01', '\x0e', '\x01'}
-	prefixedTestEthKey1 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey1...)
-	prefixedTestEthKey2 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey2...)
-	prefixedTestEthKey3 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey3...)
-	prefixedTestEthKey4 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey4...)
-	prefixedTestEthKey5 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey5...)
-	prefixedTestEthKey6 = append(append(testPrefix, pgipfsethdb.KeyDelineation...), testEthKey6...)
-	mockValue1          = []byte{1}
-	mockValue2          = []byte{2}
-	mockValue3          = []byte{3}
-	mockValue4          = []byte{4}
-	mockValue5          = []byte{5}
-	mockValue6          = []byte{6}
-)
-
-var _ = Describe("Iterator", func() {
-	BeforeEach(func() {
-		db, err = pgipfsethdb.TestDB()
-		Expect(err).ToNot(HaveOccurred())
-		database = pgipfsethdb.NewDatabase(db)
-		// non-prefixed entries
-		err = database.Put(testEthKey1, mockValue1)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(testEthKey2, mockValue2)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(testEthKey3, mockValue3)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(testEthKey4, mockValue4)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(testEthKey5, mockValue5)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(testEthKey6, mockValue6)
-		Expect(err).ToNot(HaveOccurred())
-		// prefixed entries
-		err = database.Put(prefixedTestEthKey1, mockValue1)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(prefixedTestEthKey2, mockValue2)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(prefixedTestEthKey3, mockValue3)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(prefixedTestEthKey4, mockValue4)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(prefixedTestEthKey5, mockValue5)
-		Expect(err).ToNot(HaveOccurred())
-		err = database.Put(prefixedTestEthKey6, mockValue6)
-		Expect(err).ToNot(HaveOccurred())
-	})
-	AfterEach(func() {
-		err = pgipfsethdb.ResetTestDB(db)
-		Expect(err).ToNot(HaveOccurred())
-	})
-
-	Describe("NewIterator", func() {
-		It("iterates over the entire key-set (prefixed or not)", func() {
-			iterator = database.NewIterator()
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).ToNot(BeTrue())
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
-		})
-	})
-
-	Describe("NewIteratorWithPrefix", func() {
-		It("iterates over all db entries that have the provided prefix", func() {
-			iterator = database.NewIteratorWithPrefix(testPrefix)
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).ToNot(BeTrue())
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
-		})
-
-		It("behaves as no prefix is provided if prefix is nil", func() {
-			iterator = database.NewIteratorWithPrefix(nil)
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).ToNot(BeTrue())
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
-		})
-
-		It("considers empty but non-nil []byte a valid prefix, which precludes iteration over any other prefixed keys", func() {
-			iterator = database.NewIteratorWithPrefix([]byte{})
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).ToNot(BeTrue())
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
-		})
-	})
-
-	Describe("NewIteratorWithStart", func() {
-		It("iterates over the entire key-set (prefixed or not) starting with at the provided path", func() {
-			iterator = database.NewIteratorWithStart(testEthKey2)
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey1))
-			Expect(iterator.Value()).To(Equal(mockValue1))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).ToNot(BeTrue())
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
-		})
-
-		It("iterates over the entire key-set (prefixed or not) starting with at the provided path", func() {
-			iterator = database.NewIteratorWithStart(prefixedTestEthKey3)
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey3))
-			Expect(iterator.Value()).To(Equal(mockValue3))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey5))
-			Expect(iterator.Value()).To(Equal(mockValue5))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey4))
-			Expect(iterator.Value()).To(Equal(mockValue4))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(prefixedTestEthKey6))
-			Expect(iterator.Value()).To(Equal(mockValue6))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).ToNot(BeTrue())
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(Equal(sql.ErrNoRows))
-		})
-	})
-
-	Describe("Release", func() {
-		It("releases resources associated with the Iterator", func() {
-			iterator = database.NewIteratorWithStart(testEthKey2)
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more := iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-
-			iterator.Release()
-			iterator.Release() // check that we don't panic if called multiple times
-
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(BeNil())
-			Expect(iterator.Error()).To(BeNil())
-			Expect(func() { iterator.Next() }).To(Panic()) // check that we panic if we try to use released iterator
-
-			// We can still create a new iterator from the same backing db
-			iterator = database.NewIteratorWithStart(testEthKey2)
-			Expect(iterator.Value()).To(BeNil())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Error()).To(BeNil())
-
-			more = iterator.Next()
-			Expect(more).To(BeTrue())
-			Expect(iterator.Key()).To(Equal(testEthKey2))
-			Expect(iterator.Value()).To(Equal(mockValue2))
-			Expect(iterator.Error()).To(BeNil())
-		})
-	})
-})

postgres/key_type.go

@@ -1,69 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import "bytes"
-
-type KeyType uint
-
-const (
-	Invalid KeyType = iota
-	Static
-	Keccak
-	Prefixed
-	Suffixed
-	Header
-	Preimage
-)
-
-var (
-	// KeyDelineation is used to delineate the key prefixes and suffixes
-	KeyDelineation = []byte("-fix-")
-
-	// NumberDelineation is used to delineate the block number encoded in a key
-	NumberDelineation = []byte("-nmb-")
-
-	// Data item prefixes (use single byte to avoid mixing data types, avoid `i`, used for indexes).
-	HeaderPrefix   = []byte("h")           // headerPrefix + num (uint64 big endian) + hash -> header
-	PreimagePrefix = []byte("secure-key-") // preimagePrefix + hash -> preimage
-)
-
-// ResolveKeyType returns the key type based on the prefix
-func ResolveKeyType(key []byte) (KeyType, [][]byte) {
-	sk := bytes.Split(key, KeyDelineation)
-
-	// these heuristics are reliant on the current db key patterns
-	switch len(sk) {
-	case 1:
-		if len(sk[0]) < 32 {
-			return Static, sk
-		}
-		return Keccak, sk
-	case 2:
-		switch prefix := sk[0]; {
-		case bytes.Equal(prefix, HeaderPrefix):
-			return Header, bytes.Split(sk[1], NumberDelineation)
-		case bytes.Equal(prefix, PreimagePrefix):
-			return Preimage, sk
-		default:
-			return Prefixed, sk
-		}
-	case 3:
-		return Suffixed, sk
-	}
-	return Invalid, sk
-}

postgres/test_helpers.go

@@ -1,67 +0,0 @@
-// VulcanizeDB
-// Copyright © 2020 Vulcanize
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package pgipfsethdb
-
-import (
-	"github.com/jmoiron/sqlx"
-)
-
-// TestDB connect to the testing database
-// it assumes the database has the IPFS public.blocks table present
-// DO NOT use a production db for the test db, as it will remove all contents of the public.blocks table
-func TestDB() (*sqlx.DB, error) {
-	connectStr := "postgresql://localhost:5432/vulcanize_testing?sslmode=disable"
-	return sqlx.Connect("postgres", connectStr)
-}
-
-// ResetTestDB drops all rows in the test db public.blocks table
-func ResetTestDB(db *sqlx.DB) error {
-	tx, err := db.Beginx()
-	if err != nil {
-		return err
-	}
-	defer func() {
-		if p := recover(); p != nil {
-			tx.Rollback()
-			panic(p)
-		} else if err != nil {
-			tx.Rollback()
-		} else {
-			err = tx.Commit()
-		}
-	}()
-	if _, err := tx.Exec("TRUNCATE public.blocks CASCADE"); err != nil {
-		return err
-	}
-	if _, err := tx.Exec("TRUNCATE eth.key_preimages CASCADE"); err != nil {
-		return err
-	}
-	if _, err := tx.Exec("TRUNCATE eth.ancient_headers CASCADE"); err != nil {
-		return err
-	}
-	if _, err := tx.Exec("TRUNCATE eth.ancient_hashes CASCADE"); err != nil {
-		return err
-	}
-	if _, err := tx.Exec("TRUNCATE eth.ancient_bodies CASCADE"); err != nil {
-		return err
-	}
-	if _, err := tx.Exec("TRUNCATE eth.ancient_receipts CASCADE"); err != nil {
-		return err
-	}
-	_, err = tx.Exec("TRUNCATE eth.ancient_tds CASCADE")
-	return err
-}

postgres/util.go

@@ -17,11 +17,9 @@
 package pgipfsethdb
 
 import (
-	"fmt"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
-
+	dshelp "github.com/ipfs/go-ipfs-ds-help"
-	"github.com/ethereum/go-ethereum/common"
+	"github.com/jmoiron/sqlx"
-	"github.com/ipfs/go-ipfs-blockstore"
-	"github.com/ipfs/go-ipfs-ds-help"
 	_ "github.com/lib/pq" //postgres driver
 	"github.com/multiformats/go-multihash"
 )
@@ -36,28 +34,16 @@ func MultihashKeyFromKeccak256(h []byte) (string, error) {
 	return blockstore.BlockPrefix.String() + dbKey.String(), nil
 }
 
-// DatastoreKeyFromGethKey returns the public.blocks key from the provided geth key
+// TestDB connect to the testing database
-// It also returns the key's prefix, if it has one
+// it assumes the database has the IPFS public.blocks table present
-func DatastoreKeyFromGethKey(h []byte) (string, []byte, error) {
+// DO NOT use a production db for the test db, as it will remove all contents of the public.blocks table
-	keyType, keyComponents := ResolveKeyType(h)
+func TestDB() (*sqlx.DB, error) {
-	switch keyType {
+	connectStr := "postgresql://localhost:5432/vulcanize_testing?sslmode=disable"
-	case Keccak:
+	return sqlx.Connect("postgres", connectStr)
-		mhKey, err := MultihashKeyFromKeccak256(h)
+}
-		return mhKey, nil, err
+
-	case Header:
+// ResetTestDB drops all rows in the test db public.blocks table
-		mhKey, err := MultihashKeyFromKeccak256(keyComponents[1])
+func ResetTestDB(db *sqlx.DB) error {
-		return mhKey, keyComponents[0], err
+	_, err := db.Exec("TRUNCATE public.blocks CASCADE")
-	case Preimage:
+	return err
-		mhKey, err := MultihashKeyFromKeccak256(keyComponents[1])
-		return mhKey, keyComponents[0], err
-	case Prefixed, Suffixed:
-		// This data is not mapped by hash => content by geth, store it using the prefixed/suffixed key directly
-		// I.e. the public.blocks datastore key == the hex representation of the geth key
-		// Alternatively, decompose the data and derive the hash
-		return common.Bytes2Hex(h), keyComponents[0], nil
-	case Static:
-		return common.Bytes2Hex(h), nil, nil
-	default:
-		return "", nil, fmt.Errorf("invalid formatting of database key: %x", h)
-	}
 }

util.go

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