Merge pull request #59 from cerc-io/roy/v5-dev

Deregister groupcache on close

README.md

@@ -1,6 +1,6 @@
 ## ipfs-ethdb
 
-[![Go Report Card](https://goreportcard.com/badge/github.com/vulcanize/ipfs-ethdb)](https://goreportcard.com/report/github.com/vulcanize/ipfs-ethdb)
+[![Go Report Card](https://goreportcard.com/badge/github.com/cerc/ipfs-ethdb)](https://goreportcard.com/report/github.com/cerc-io/ipfs-ethdb)
 
 > go-ethereum ethdb interfaces for Ethereum state data stored in IPFS
 
@@ -11,7 +11,7 @@ interfacing with a state database. These interfaces are used to build higher-lev
 which are used to perform the bulk of state related needs.
 
 Ethereum data can be stored on IPFS, standard codecs for Etheruem data are defined in the [go-cid](https://github.com/ipfs/go-cid) library.
-Using our [statediffing geth client](https://github.com/vulcanize/go-ethereum/releases/tag/v1.9.11-statediff-0.0.2) it is feasible to extract every single
+Using our [statediffing geth client](https://github.com/cerc-io/go-ethereum/releases/tag/v1.9.11-statediff-0.0.2) it is feasible to extract every single
 state and storage node and publish it to IPFS.
 
 Geth stores state data in leveldb as key-value pairs between the keccak256 hash of the rlp-encoded object and the rlp-encoded object.
@@ -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/cerc-io/ipfs-ethdb/v5"
 )
 
 func main() {

batch.go

@@ -17,12 +17,13 @@
 package ipfsethdb
 
 import (
+	"context"
 	"errors"
 
 	"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 +31,8 @@ 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
@@ -101,7 +104,7 @@ func (b *Batch) Write() error {
 		}
 		puts[i] = b
 	}
-	if err := b.blockService.AddBlocks(puts); err != nil {
+	if err := b.blockService.AddBlocks(context.Background(), puts); err != nil {
 		return err
 	}
 	for _, key := range b.deleteCache.Keys() {
@@ -110,7 +113,7 @@ func (b *Batch) Write() error {
 		if err != nil {
 			return err
 		}
-		if err := b.blockService.DeleteBlock(c); err != nil {
+		if err := b.blockService.DeleteBlock(context.Background(), c); err != nil {
 			return err
 		}
 	}

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/cerc-io/ipfs-ethdb/v5"
 )
 
 var (

database.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"strconv"
 	"strings"
 
 	"github.com/ethereum/go-ethereum/ethdb"
@@ -33,6 +32,8 @@ 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 +55,10 @@ 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
@@ -63,7 +68,7 @@ func (d *Database) Has(key []byte) (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	return d.blockService.Blockstore().Has(c)
+	return d.blockService.Blockstore().Has(context.Background(), c)
 }
 
 // Get satisfies the ethdb.KeyValueReader interface
@@ -89,7 +94,7 @@ func (d *Database) Put(key []byte, value []byte) error {
 	if err != nil {
 		return err
 	}
-	return d.blockService.AddBlock(b)
+	return d.blockService.AddBlock(context.Background(), b)
 }
 
 // Delete satisfies the ethdb.KeyValueWriter interface
@@ -100,7 +105,7 @@ func (d *Database) Delete(key []byte) error {
 	if err != nil {
 		return err
 	}
-	return d.blockService.DeleteBlock(c)
+	return d.blockService.DeleteBlock(context.Background(), c)
 }
 
 // DatabaseProperty enum type
@@ -129,9 +134,6 @@ func (d *Database) Stat(property string) (string, error) {
 		return "", err
 	}
 	switch prop {
-	case ExchangeOnline:
-		online := d.blockService.Exchange().IsOnline()
-		return strconv.FormatBool(online), nil
 	default:
 		return "", fmt.Errorf("unhandled database property")
 	}
@@ -154,6 +156,16 @@ func (d *Database) NewBatch() ethdb.Batch {
 	return b
 }
 
+// NewBatchWithSize satisfies the ethdb.Batcher interface.
+// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
+func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
+	b, err := NewBatch(d.blockService, size)
+	if err != nil {
+		panic(err)
+	}
+	return b
+}
+
 // NewIterator satisfies the ethdb.Iteratee interface
 // it creates a binary-alphabetical iterator over a subset
 // of database content with a particular key prefix, starting at a particular
@@ -189,21 +201,41 @@ 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.AncientReaderOp) 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
 }
 
@@ -212,3 +244,20 @@ 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
+}
+
+// AncientDatadir returns an error as we don't have a backing chain freezer.
+func (d *Database) AncientDatadir() (string, error) {
+	return "", 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/cerc-io/ipfs-ethdb/v5"
 )
 
 var (

go.mod

@@ -1,19 +1,71 @@
-module github.com/vulcanize/ipfs-ethdb
+module github.com/cerc-io/ipfs-ethdb/v5
 
-go 1.13
+go 1.19
 
 require (
-	github.com/ethereum/go-ethereum v1.9.15
+	github.com/ethereum/go-ethereum v1.11.5
-	github.com/hashicorp/golang-lru v0.5.4
+	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d
-	github.com/ipfs/go-block-format v0.0.2
+	github.com/ipfs/go-block-format v0.0.3
-	github.com/ipfs/go-blockservice v0.1.3
+	github.com/ipfs/go-blockservice v0.4.0
-	github.com/ipfs/go-cid v0.0.5
+	github.com/ipfs/go-cid v0.2.0
-	github.com/ipfs/go-ipfs-blockstore v1.0.0
+	github.com/ipfs/go-ipfs-blockstore v1.2.0
-	github.com/ipfs/go-ipfs-ds-help v1.0.0
+	github.com/ipfs/go-ipfs-ds-help v1.1.0
-	github.com/ipfs/go-ipfs-exchange-interface v0.0.1
+	github.com/ipfs/go-ipfs-exchange-interface v0.2.0
-	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 v1.10.6
-	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/onsi/gomega v1.19.0
+	github.com/sirupsen/logrus v1.6.0
+)
+
+require github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
+
+require (
+	github.com/btcsuite/btcd v0.22.0-beta // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/holiman/uint256 v1.2.0 // indirect
+	github.com/ipfs/bbloom v0.0.4 // indirect
+	github.com/ipfs/go-datastore v0.5.0 // indirect
+	github.com/ipfs/go-ipfs-util v0.0.2 // indirect
+	github.com/ipfs/go-ipld-format v0.4.0 // indirect
+	github.com/ipfs/go-log v1.0.5 // indirect
+	github.com/ipfs/go-log/v2 v2.3.0 // indirect
+	github.com/ipfs/go-metrics-interface v0.0.1 // indirect
+	github.com/ipfs/go-verifcid v0.0.1 // indirect
+	github.com/jbenet/goprocess v0.1.4 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
+	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 // indirect
+	github.com/minio/sha256-simd v1.0.0 // indirect
+	github.com/mr-tron/base58 v1.2.0 // indirect
+	github.com/multiformats/go-base32 v0.0.3 // indirect
+	github.com/multiformats/go-base36 v0.1.0 // indirect
+	github.com/multiformats/go-multibase v0.0.3 // indirect
+	github.com/multiformats/go-varint v0.0.6 // indirect
+	github.com/nxadm/tail v1.4.8 // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/segmentio/fasthash v1.0.3 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	go.opentelemetry.io/otel v1.7.0 // indirect
+	go.opentelemetry.io/otel/trace v1.7.0 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.16.0 // indirect
+	golang.org/x/crypto v0.1.0 // indirect
+	golang.org/x/net v0.4.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	lukechampine.com/blake3 v1.1.6 // indirect
 )

go.sum

@@ -1,377 +1,359 @@
-github.com/AndreasBriese/bbloom v0.0.0-20180913140656-343706a395b7/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
-github.com/Azure/azure-pipeline-go v0.2.1/go.mod h1:UGSo8XybXnIGZ3epmeBw7Jdz+HiUVpqIlpz/HKHylF4=
-github.com/Azure/azure-pipeline-go v0.2.2/go.mod h1:4rQ/NZncSvGqNkkOsNpOU1tgoNuIlp9AfUH5G1tvCHc=
-github.com/Azure/azure-storage-blob-go v0.7.0/go.mod h1:f9YQKtsG1nMisotuTPpO0tjNuEjKRYAcJU8/ydDI++4=
-github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
-github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
-github.com/Azure/go-autorest/autorest/adal v0.8.0/go.mod h1:Z6vX6WXXuyieHAXwMj0S6HY6e6wcHn37qQMBQlvY3lc=
-github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
-github.com/Azure/go-autorest/autorest/date v0.2.0/go.mod h1:vcORJHLJEh643/Ioh9+vPmf1Ij9AEBM5FuBIXLmIy0g=
-github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
-github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
-github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN3SVSiiO77gL2j2ronKKP0syM=
-github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
-github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/Kubuxu/go-os-helper v0.0.1/go.mod h1:N8B+I7vPCT80IcP58r50u4+gEEcsZETFUpAzWW2ep1Y=
+github.com/DataDog/zstd v1.5.2 h1:vUG4lAyuPCXO0TLbXvPv7EB7cNK1QV/luu55UHLrrn8=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 h1:fLjPD/aNc3UIOA6tDi6QXUemppXK3P9BI7mr2hd6gx8=
-github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
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-github.com/VictoriaMetrics/fastcache v1.5.7 h1:4y6y0G8PRzszQUYIQHHssv/jgPHAb5qQuuDNdCbyAgw=
-github.com/VictoriaMetrics/fastcache v1.5.7/go.mod h1:ptDBkNMQI4RtmVo8VS/XwRY6RoTu1dAWCbrk+6WsEM8=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
-github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
+github.com/btcsuite/btcd v0.22.0-beta h1:LTDpDKUM5EeOFBPM8IXpinEcmZ6FWfNZbE3lfrfdnWo=
-github.com/aristanetworks/goarista v0.0.0-20170210015632-ea17b1a17847 h1:rtI0fD4oG/8eVokGVPYJEW1F88p1ZNgXiEIs9thEE4A=
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-github.com/aristanetworks/goarista v0.0.0-20170210015632-ea17b1a17847/go.mod h1:D/tb0zPVXnP7fmsLZjtdUhSsumbK/ij54UXjjVgMGxQ=
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-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
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-github.com/btcsuite/btcd v0.0.0-20190213025234-306aecffea32/go.mod h1:DrZx5ec/dmnfpw9KyYoQyYo7d0KEvTkk/5M/vbZjAr8=
-github.com/btcsuite/btcd v0.0.0-20190523000118-16327141da8c/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
-github.com/btcsuite/btcd v0.0.0-20190605094302-a0d1e3e36d50/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
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-gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
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-gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+lukechampine.com/blake3 v1.1.6 h1:H3cROdztr7RCfoaTpGZFQsrqvweFLrqS73j7L7cmR5c=
+lukechampine.com/blake3 v1.1.6/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=

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 (
@@ -52,27 +52,27 @@ func (mbs *MockBlockservice) Exchange() exchange.Interface {
 	panic("Exchange: implement me")
 }
 
-func (mbs *MockBlockservice) AddBlock(b blocks.Block) error {
+func (mbs *MockBlockservice) AddBlock(ctx context.Context, b blocks.Block) error {
-	return mbs.blockStore.Put(b)
+	return mbs.blockStore.Put(ctx, b)
 }
 
-func (mbs *MockBlockservice) AddBlocks(bs []blocks.Block) error {
+func (mbs *MockBlockservice) AddBlocks(ctx context.Context, bs []blocks.Block) error {
-	return mbs.blockStore.PutMany(bs)
+	return mbs.blockStore.PutMany(ctx, bs)
 }
 
-func (mbs *MockBlockservice) DeleteBlock(c cid.Cid) error {
+func (mbs *MockBlockservice) DeleteBlock(ctx context.Context, c cid.Cid) error {
-	return mbs.blockStore.DeleteBlock(c)
+	return mbs.blockStore.DeleteBlock(ctx, c)
 }
 
 func (mbs *MockBlockservice) GetBlock(ctx context.Context, c cid.Cid) (blocks.Block, error) {
-	return mbs.blockStore.Get(c)
+	return mbs.blockStore.Get(ctx, c)
 }
 
 func (mbs *MockBlockservice) GetBlocks(ctx context.Context, cs []cid.Cid) <-chan blocks.Block {
 	blockChan := make(chan blocks.Block)
 	go func() {
 		for _, c := range cs {
-			if b, err := mbs.blockStore.Get(c); err == nil {
+			if b, err := mbs.blockStore.Get(ctx, c); err == nil {
 				blockChan <- b
 			}
 		}
@@ -93,17 +93,17 @@ type MockBlockstore struct {
 	err    error
 }
 
-func (mbs *MockBlockstore) DeleteBlock(c cid.Cid) error {
+func (mbs *MockBlockstore) DeleteBlock(ctx context.Context, c cid.Cid) error {
 	delete(mbs.blocks, c.String())
 	return mbs.err
 }
 
-func (mbs *MockBlockstore) Has(c cid.Cid) (bool, error) {
+func (mbs *MockBlockstore) Has(ctx context.Context, c cid.Cid) (bool, error) {
 	_, ok := mbs.blocks[c.String()]
 	return ok, mbs.err
 }
 
-func (mbs *MockBlockstore) Get(c cid.Cid) (blocks.Block, error) {
+func (mbs *MockBlockstore) Get(ctx context.Context, c cid.Cid) (blocks.Block, error) {
 	obj, ok := mbs.blocks[c.String()]
 	if !ok {
 		return nil, blockNotFoundErr
@@ -111,7 +111,7 @@ func (mbs *MockBlockstore) Get(c cid.Cid) (blocks.Block, error) {
 	return obj, mbs.err
 }
 
-func (mbs *MockBlockstore) GetSize(c cid.Cid) (int, error) {
+func (mbs *MockBlockstore) GetSize(ctx context.Context, c cid.Cid) (int, error) {
 	obj, ok := mbs.blocks[c.String()]
 	if !ok {
 		return 0, blockNotFoundErr
@@ -119,12 +119,12 @@ func (mbs *MockBlockstore) GetSize(c cid.Cid) (int, error) {
 	return len(obj.RawData()), mbs.err
 }
 
-func (mbs *MockBlockstore) Put(b blocks.Block) error {
+func (mbs *MockBlockstore) Put(ctx context.Context, b blocks.Block) error {
 	mbs.blocks[b.Cid().String()] = b
 	return mbs.err
 }
 
-func (mbs *MockBlockstore) PutMany(bs []blocks.Block) error {
+func (mbs *MockBlockstore) PutMany(ctx context.Context, bs []blocks.Block) error {
 	for _, b := range bs {
 		mbs.blocks[b.Cid().String()] = b
 	}

postgres/doc.md

@@ -1,6 +1,6 @@
 ## ipfs-ethdb
 
-IPFS has been [extended](https://github.com/vulcanize/go-ipfs/releases/tag/v0.4.22-alpha) to [use Postgres](https://github.com/vulcanize/go-ipfs-config/releases/tag/v0.0.8-alpha) as a backing [datastore](https://github.com/ipfs/go-ds-sql/tree/master/postgres).
+IPFS has been [extended](https://github.com/cerc-io/go-ipfs/releases/tag/v0.4.22-alpha) to [use Postgres](https://github.com/cerc-io/go-ipfs-config/releases/tag/v0.0.8-alpha) as a backing [datastore](https://github.com/ipfs/go-ds-sql/tree/master/postgres).
 Interfacing directly with the IPFS-backing Postgres database has some advantages over using the blockservice interface.
 Namely, batching of IPFS writes with other Postgres writes and avoiding lock contention on the ipfs repository (lockfile located at the `IPFS_PATH`).
 The downside is that we forgo the block-exchange capabilities of the blockservice, and are only able to fetch data contained in the local datastore.
@@ -18,11 +18,11 @@ 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/cerc-io/ipfs-ethdb/v5/postgres/v1"
 )
 
 func main() {
-    connectStr := "postgresql://localhost:5432/vulcanize_testing?sslmode=disable"
+    connectStr := "postgresql://vdbm:password@localhost:8077/cerc_testing?sslmode=disable"
     db, _ := sqlx.Connect("postgres", connectStr)
 
     kvs := pgipfsethdb.NewKeyValueStore(db)
@@ -31,7 +31,11 @@ func main() {
     trieNodeIterator := t.NodeIterator([]byte{})
     // do stuff with trie node iterator
 
-    database := pgipfsethdb.NewDatabase(db)
+    database := pgipfsethdb.NewDatabase(db, pgipfsethdb.CacheConfig{
+		Name:           "db",
+		Size:           3000000, // 3MB
+		ExpiryDuration: time.Hour,
+	})
     stateDatabase := state.NewDatabase(database)
     stateDB, _ := state.New(common.Hash{}, stateDatabase, nil)
     stateDBNodeIterator := state.NewNodeIterator(stateDB)

postgres/shared/util.go

@@ -0,0 +1,42 @@
+// VulcanizeDB
+// Copyright © 2023 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 shared
+
+import (
+	"github.com/jmoiron/sqlx"
+)
+
+/*
+	Hostname:     "localhost",
+	Port:         8077,
+	DatabaseName: "cerc_testing",
+	Username:     "vdbm",
+	Password:     "password",
+*/
+// TestDB connect to the testing database
+// it assumes the database has the IPFS ipld.blocks table present
+// DO NOT use a production db for the test db, as it will remove all contents of the ipld.blocks table
+func TestDB() (*sqlx.DB, error) {
+	connectStr := "postgresql://vdbm:password@localhost:8077/cerc_testing?sslmode=disable"
+	return sqlx.Connect("postgres", connectStr)
+}
+
+// ResetTestDB drops all rows in the test db ipld.blocks table
+func ResetTestDB(db *sqlx.DB) error {
+	_, err := db.Exec("TRUNCATE ipld.blocks CASCADE")
+	return err
+}

postgres/v0/batch.go

@@ -0,0 +1,117 @@
+// 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 (
+	"math/big"
+
+	"github.com/ipfs/go-cid"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/jmoiron/sqlx"
+)
+
+var _ ethdb.Batch = &Batch{}
+
+// Batch is the type that satisfies the ethdb.Batch interface for PG-IPFS Ethereum data using a direct Postgres connection
+type Batch struct {
+	db        *sqlx.DB
+	tx        *sqlx.Tx
+	valueSize int
+
+	blockNumber *big.Int
+}
+
+// NewBatch returns a ethdb.Batch interface for PG-IPFS
+func NewBatch(db *sqlx.DB, tx *sqlx.Tx, blockNumber *big.Int) ethdb.Batch {
+	b := &Batch{
+		db:          db,
+		tx:          tx,
+		blockNumber: blockNumber,
+	}
+	if tx == nil {
+		b.Reset()
+	}
+	return b
+}
+
+// Put satisfies the ethdb.Batch interface
+// Put inserts the given value into the key-value data store
+// Key is expected to be a fully formulated cid key
+// TODO: note, now that we expected a cid we could route to the "cids" tables based on prefix instead of to ipld.blocks
+// but is it better to handle this routing here, or use a completely different interface since we already have to refactor
+// at levels above this package in order to pass in cids instead of raw keccak256 hashes
+func (b *Batch) Put(cidBytes []byte, value []byte) (err error) {
+	// cast and resolve strings from cid.Cast
+	// this will assert that we have a correctly formatted CID
+	// and will handle the different string encodings for v0 and v1 CIDs
+	// (note that this v0 vs v1 is different from the blockstore v0 vs v1)
+	c, err := cid.Cast(cidBytes)
+	if err != nil {
+		return err
+	}
+	if _, err = b.tx.Exec(putPgStr, c.String(), value, b.blockNumber.Uint64()); err != nil {
+		return err
+	}
+	b.valueSize += len(value)
+	return nil
+}
+
+// Delete satisfies the ethdb.Batch interface
+// Delete removes the key from the key-value data store
+func (b *Batch) Delete(cidBytes []byte) (err error) {
+	c, err := cid.Cast(cidBytes)
+	if err != nil {
+		return err
+	}
+	_, err = b.tx.Exec(deletePgStr, c.String())
+	return err
+}
+
+// ValueSize satisfies the ethdb.Batch interface
+// ValueSize retrieves the amount of data queued up for writing
+// The returned value is the total byte length of all data queued to write
+func (b *Batch) ValueSize() int {
+	return b.valueSize
+}
+
+// Write satisfies the ethdb.Batch interface
+// Write flushes any accumulated data to disk
+func (b *Batch) Write() error {
+	if b.tx == nil {
+		return nil
+	}
+	return b.tx.Commit()
+}
+
+// Replay satisfies the ethdb.Batch interface
+// Replay replays the batch contents
+func (b *Batch) Replay(w ethdb.KeyValueWriter) error {
+	return errNotSupported
+}
+
+// Reset satisfies the ethdb.Batch interface
+// Reset resets the batch for reuse
+// This should be called after every write
+func (b *Batch) Reset() {
+	var err error
+	b.tx, err = b.db.Beginx()
+	if err != nil {
+		panic(err)
+	}
+	b.valueSize = 0
+}

postgres/v0/batch_test.go

@@ -0,0 +1,138 @@
+// 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"
+	"time"
+
+	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
+
+	"github.com/ipfs/go-cid"
+
+	"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/cerc-io/ipfs-ethdb/v5/postgres/v0"
+)
+
+var (
+	batch         ethdb.Batch
+	testHeader2   = types.Header{Number: big.NewInt(2)}
+	testValue2, _ = rlp.EncodeToBytes(testHeader2)
+	testEthKey2   = testHeader2.Hash().Bytes()
+	testCID2, _   = pgipfsethdb.CIDFromKeccak256(testEthKey2, cid.EthBlock)
+)
+
+var _ = Describe("Batch", func() {
+	BeforeEach(func() {
+		db, err = shared.TestDB()
+		Expect(err).ToNot(HaveOccurred())
+
+		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 = shared.ResetTestDB(db)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	Describe("Put/Write", func() {
+		It("adds the key-value pair to the batch", func() {
+			_, err = database.Get(testCID.Bytes())
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+			_, err = database.Get(testCID2.Bytes())
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = batch.Put(testCID.Bytes(), testValue)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Put(testCID2.Bytes(), testValue2)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Write()
+			Expect(err).ToNot(HaveOccurred())
+
+			val, err := database.Get(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+			val2, err := database.Get(testCID2.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val2).To(Equal(testValue2))
+		})
+	})
+
+	Describe("Delete/Reset/Write", func() {
+		It("deletes the key-value pair in the batch", func() {
+			err = batch.Put(testCID.Bytes(), testValue)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Put(testCID2.Bytes(), testValue2)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Write()
+			Expect(err).ToNot(HaveOccurred())
+
+			batch.Reset()
+			err = batch.Delete(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Delete(testCID2.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Write()
+			Expect(err).ToNot(HaveOccurred())
+
+			_, err = database.Get(testCID.Bytes())
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+			_, err = database.Get(testCID2.Bytes())
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+
+	Describe("ValueSize/Reset", func() {
+		It("returns the size of data in the batch queued for write", func() {
+			err = batch.Put(testCID.Bytes(), testValue)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Put(testCID2.Bytes(), testValue2)
+			Expect(err).ToNot(HaveOccurred())
+			err = batch.Write()
+			Expect(err).ToNot(HaveOccurred())
+
+			size := batch.ValueSize()
+			Expect(size).To(Equal(len(testValue) + len(testValue2)))
+
+			batch.Reset()
+			size = batch.ValueSize()
+			Expect(size).To(Equal(0))
+		})
+	})
+})

postgres/v0/database.go

@@ -0,0 +1,365 @@
+// 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 (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"math/big"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/ipfs/go-cid"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/jmoiron/sqlx"
+	"github.com/mailgun/groupcache/v2"
+	log "github.com/sirupsen/logrus"
+)
+
+var errNotSupported = errors.New("this operation is not supported")
+
+var (
+	hasPgStr    = "SELECT exists(select 1 from ipld.blocks WHERE key = $1 LIMIT 1)"
+	getPgStr    = "SELECT data FROM ipld.blocks WHERE key = $1 LIMIT 1"
+	putPgStr    = "INSERT INTO ipld.blocks (key, data, block_number) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
+	deletePgStr = "DELETE FROM ipld.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
+	cache *groupcache.Group
+
+	BlockNumber *big.Int
+}
+
+func (d *Database) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
+	return 0, errNotSupported
+}
+
+type CacheConfig struct {
+	Name           string
+	Size           int
+	ExpiryDuration time.Duration
+}
+
+// NewKeyValueStore returns a ethdb.KeyValueStore interface for PG-IPFS
+func NewKeyValueStore(db *sqlx.DB, cacheConfig CacheConfig) ethdb.KeyValueStore {
+	database := Database{db: db}
+	database.InitCache(cacheConfig)
+
+	return &database
+}
+
+// NewDatabase returns a ethdb.Database interface for PG-IPFS
+func NewDatabase(db *sqlx.DB, cacheConfig CacheConfig) ethdb.Database {
+	database := Database{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 cid is present in the key-value data store
+func (d *Database) Has(cidBytes []byte) (bool, error) {
+	c, err := cid.Cast(cidBytes)
+	if err != nil {
+		return false, err
+	}
+	var exists bool
+	return exists, d.db.Get(&exists, hasPgStr, c.String())
+}
+
+// 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
+	err := d.db.Get(&data, getPgStr, key)
+	if err == sql.ErrNoRows {
+		log.Warn("Database miss for key ", key)
+	}
+
+	return data, err
+}
+
+// Get satisfies the ethdb.KeyValueReader interface
+// Get retrieves the given cid if it's present in the key-value data store
+func (d *Database) Get(cidBytes []byte) ([]byte, error) {
+	c, err := cid.Cast(cidBytes)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
+	defer cancel()
+
+	var data []byte
+	return data, d.cache.Get(ctx, c.String(), 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 a fully formulated cis of value
+func (d *Database) Put(cidBytes []byte, value []byte) error {
+	c, err := cid.Cast(cidBytes)
+	if err != nil {
+		return err
+	}
+	_, err = d.db.Exec(putPgStr, c.String(), value, d.BlockNumber.Uint64())
+	return err
+}
+
+// Delete satisfies the ethdb.KeyValueWriter interface
+// Delete removes the cid from the key-value data store
+func (d *Database) Delete(cidBytes []byte) error {
+	c, err := cid.Cast(cidBytes)
+	if err != nil {
+		return err
+	}
+	cidString := c.String()
+
+	_, err = d.db.Exec(deletePgStr, cidString)
+	if err != nil {
+		return err
+	}
+
+	// Remove from cache.
+	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*500)
+	defer cancel()
+	err = d.cache.Remove(ctx, cidString)
+
+	return err
+}
+
+// DatabaseProperty enum type
+type DatabaseProperty int
+
+const (
+	Unknown DatabaseProperty = iota
+	Size
+	Idle
+	InUse
+	MaxIdleClosed
+	MaxLifetimeClosed
+	MaxOpenConnections
+	OpenConnections
+	WaitCount
+	WaitDuration
+)
+
+// DatabasePropertyFromString helper function
+func DatabasePropertyFromString(property string) (DatabaseProperty, error) {
+	switch strings.ToLower(property) {
+	case "size":
+		return Size, nil
+	case "idle":
+		return Idle, nil
+	case "inuse":
+		return InUse, nil
+	case "maxidleclosed":
+		return MaxIdleClosed, nil
+	case "maxlifetimeclosed":
+		return MaxLifetimeClosed, nil
+	case "maxopenconnections":
+		return MaxOpenConnections, nil
+	case "openconnections":
+		return OpenConnections, nil
+	case "waitcount":
+		return WaitCount, nil
+	case "waitduration":
+		return WaitDuration, nil
+	default:
+		return Unknown, fmt.Errorf("unknown database property")
+	}
+}
+
+// Stat satisfies the ethdb.Stater interface
+// Stat returns a particular internal stat of the database
+func (d *Database) Stat(property string) (string, error) {
+	prop, err := DatabasePropertyFromString(property)
+	if err != nil {
+		return "", err
+	}
+	switch prop {
+	case Size:
+		var byteSize string
+		return byteSize, d.db.Get(&byteSize, dbSizePgStr)
+	case Idle:
+		return strconv.Itoa(d.db.Stats().Idle), nil
+	case InUse:
+		return strconv.Itoa(d.db.Stats().InUse), nil
+	case MaxIdleClosed:
+		return strconv.FormatInt(d.db.Stats().MaxIdleClosed, 10), nil
+	case MaxLifetimeClosed:
+		return strconv.FormatInt(d.db.Stats().MaxLifetimeClosed, 10), nil
+	case MaxOpenConnections:
+		return strconv.Itoa(d.db.Stats().MaxOpenConnections), nil
+	case OpenConnections:
+		return strconv.Itoa(d.db.Stats().OpenConnections), nil
+	case WaitCount:
+		return strconv.FormatInt(d.db.Stats().WaitCount, 10), nil
+	case WaitDuration:
+		return d.db.Stats().WaitDuration.String(), nil
+	default:
+		return "", fmt.Errorf("unhandled database property")
+	}
+}
+
+// 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 {
+	return errNotSupported
+}
+
+// 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, d.BlockNumber)
+}
+
+// NewBatchWithSize satisfies the ethdb.Batcher interface.
+// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
+func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
+	return NewBatch(d.db, nil, d.BlockNumber)
+}
+
+// NewIterator satisfies the ethdb.Iteratee interface
+// it creates a binary-alphabetical iterator over a subset
+// of database content with a particular key prefix, starting at a particular
+// initial key (or after, if it does not exist).
+//
+// 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
+func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
+	return NewIterator(start, prefix, d.db)
+}
+
+// Close satisfies the io.Closer interface.
+// Close closes the db connection and deregisters from groupcache.
+func (d *Database) Close() error {
+	groupcache.DeregisterGroup(d.cache.Name())
+	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.AncientReaderOp) 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
+}
+
+// AncientDatadir returns an error as we don't have a backing chain freezer.
+func (d *Database) AncientDatadir() (string, error) {
+	return "", errNotSupported
+}

postgres/v0/database_test.go

@@ -0,0 +1,133 @@
+// 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"
+	"time"
+
+	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
+
+	"github.com/ipfs/go-cid"
+
+	"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/cerc-io/ipfs-ethdb/v5/postgres/v0"
+)
+
+var (
+	database        ethdb.Database
+	db              *sqlx.DB
+	err             error
+	testBlockNumber = big.NewInt(1337)
+	testHeader      = types.Header{Number: testBlockNumber}
+	testValue, _    = rlp.EncodeToBytes(testHeader)
+	testEthKey      = testHeader.Hash().Bytes()
+	testCID, _      = pgipfsethdb.CIDFromKeccak256(testEthKey, cid.EthBlock)
+)
+
+var _ = Describe("Database", func() {
+	BeforeEach(func() {
+		db, err = shared.TestDB()
+		Expect(err).ToNot(HaveOccurred())
+
+		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 = shared.ResetTestDB(db)
+		Expect(err).ToNot(HaveOccurred())
+		err = db.Close()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	Describe("Has", func() {
+		It("returns false if a key-pair doesn't exist in the db", func() {
+			has, err := database.Has(testCID.Bytes())
+			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 ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testCID.String(), testValue, testBlockNumber.Uint64())
+			Expect(err).ToNot(HaveOccurred())
+			has, err := database.Has(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(has).To(BeTrue())
+		})
+	})
+
+	Describe("Get", func() {
+		It("throws an err if the key-pair doesn't exist in the db", func() {
+			_, err = database.Get(testCID.Bytes())
+			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 ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testCID.String(), testValue, testBlockNumber.Uint64())
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Put", func() {
+		It("persists the key-value pair in the database", func() {
+			_, err = database.Get(testCID.Bytes())
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+
+			err = database.Put(testCID.Bytes(), testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+		})
+	})
+
+	Describe("Delete", func() {
+		It("removes the key-value pair from the database", func() {
+			err = database.Put(testCID.Bytes(), testValue)
+			Expect(err).ToNot(HaveOccurred())
+			val, err := database.Get(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(val).To(Equal(testValue))
+
+			err = database.Delete(testCID.Bytes())
+			Expect(err).ToNot(HaveOccurred())
+			_, err = database.Get(testCID.Bytes())
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
+		})
+	})
+})

postgres/v0/iterator.go

@@ -0,0 +1,91 @@
+// 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/ethereum/go-ethereum/ethdb"
+	"github.com/ipfs/go-cid"
+	"github.com/jmoiron/sqlx"
+)
+
+var _ ethdb.Iterator = &Iterator{}
+
+// Iterator is the type that satisfies the ethdb.Iterator interface for PG-IPFS Ethereum data using a direct Postgres connection
+// Iteratee interface is used in Geth for various tests, trie/sync_bloom.go (for fast sync),
+// rawdb.InspectDatabase, and the new core/state/snapshot features.
+// 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
+	currentKey, prefix []byte
+	err                error
+}
+
+// NewIterator returns an ethdb.Iterator interface for PG-IPFS
+func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
+	return &Iterator{
+		db:         db,
+		prefix:     prefix,
+		currentKey: start,
+	}
+}
+
+// Next satisfies the ethdb.Iterator interface
+// Next moves the iterator to the next key/value pair
+// It returns whether the iterator is exhausted
+func (i *Iterator) Next() bool {
+	// this is complicated by the ipfs db keys not being the keccak256 hashes
+	// go-ethereum usage of this method expects the iteration to occur over keccak256 keys
+	panic("implement me: Next")
+}
+
+// Error satisfies the ethdb.Iterator interface
+// Error returns any accumulated error
+// Exhausting all the key/value pairs is not considered to be an error
+func (i *Iterator) Error() error {
+	return i.err
+}
+
+// Key satisfies the ethdb.Iterator interface
+// Key returns the key of the current key/value pair, or nil if done
+// 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) Key() []byte {
+	return i.currentKey
+}
+
+// Value satisfies the ethdb.Iterator interface
+// Value returns the value of the current key/value pair, or nil if done
+// 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 {
+	c, err := cid.Cast(i.currentKey)
+	if err != nil {
+		i.err = err
+		return nil
+	}
+	var data []byte
+	i.err = i.db.Get(&data, getPgStr, c)
+	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.Close()
+}

postgres/v0/util.go

@@ -0,0 +1,32 @@
+// 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
+
+import (
+	"github.com/ipfs/go-cid"
+	_ "github.com/lib/pq" //postgres driver
+	"github.com/multiformats/go-multihash"
+)
+
+// CIDFromKeccak256 converts keccak256 hash bytes into a v1 cid
+func CIDFromKeccak256(hash []byte, codecType uint64) (cid.Cid, error) {
+	mh, err := multihash.Encode(hash, multihash.KECCAK_256)
+	if err != nil {
+		return cid.Cid{}, err
+	}
+	return cid.NewCidV1(codecType, mh), nil
+}

postgres/v1/batch.go

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

postgres/v1/batch_test.go

@@ -18,14 +18,18 @@ package pgipfsethdb_test
 
 import (
 	"math/big"
+	"time"
+
+	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
 
 	"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/cerc-io/ipfs-ethdb/v5/postgres/v1"
 )
 
 var (
@@ -37,13 +41,26 @@ var (
 
 var _ = Describe("Batch", func() {
 	BeforeEach(func() {
-		db, err = pgipfsethdb.TestDB()
+		db, err = shared.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() {
-		err = pgipfsethdb.ResetTestDB(db)
+		groupcache.DeregisterGroup("db")
+		err = shared.ResetTestDB(db)
 		Expect(err).ToNot(HaveOccurred())
 	})
 

postgres/v1/database.go

@@ -17,41 +17,94 @@
 package pgipfsethdb
 
 import (
+	"context"
+	"database/sql"
 	"errors"
 	"fmt"
+	"math/big"
+	"strconv"
 	"strings"
+	"time"
 
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/jmoiron/sqlx"
+	"github.com/mailgun/groupcache/v2"
+	log "github.com/sirupsen/logrus"
 )
 
 var errNotSupported = errors.New("this operation is not supported")
 
 var (
-	hasPgStr    = "SELECT exists(select 1 from public.blocks WHERE key = $1)"
+	hasPgStr    = "SELECT exists(select 1 from ipld.blocks WHERE key = $1 LIMIT 1)"
-	getPgStr    = "SELECT data FROM public.blocks WHERE key = $1"
+	getPgStr    = "SELECT data FROM ipld.blocks WHERE key = $1 LIMIT 1"
-	putPgStr    = "INSERT INTO public.blocks (key, data) VALUES ($1, $2) ON CONFLICT (key) DO NOTHING"
+	putPgStr    = "INSERT INTO ipld.blocks (key, data, block_number) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
-	deletePgStr = "DELETE FROM public.blocks WHERE key = $1"
+	deletePgStr = "DELETE FROM ipld.blocks WHERE key = $1"
 	dbSizePgStr = "SELECT pg_database_size(current_database())"
+
+	DefaultCacheConfig = CacheConfig{
+		Name:           "db",
+		Size:           3000000, // 3MB
+		ExpiryDuration: time.Hour,
+	}
 )
 
+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
+	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
@@ -65,6 +118,17 @@ func (d *Database) Has(key []byte) (bool, error) {
 	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
+	err := d.db.Get(&data, getPgStr, key)
+	if err == sql.ErrNoRows {
+		log.Warn("Database miss for key", key)
+	}
+
+	return data, err
+}
+
 // Get satisfies the ethdb.KeyValueReader interface
 // Get retrieves the given key if it's present in the key-value data store
 func (d *Database) Get(key []byte) ([]byte, error) {
@@ -72,8 +136,12 @@ func (d *Database) Get(key []byte) ([]byte, error) {
 	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, mhKey)
+	return data, d.cache.Get(ctx, mhKey, groupcache.AllocatingByteSliceSink(&data))
 }
 
 // Put satisfies the ethdb.KeyValueWriter interface
@@ -84,7 +152,7 @@ func (d *Database) Put(key []byte, value []byte) error {
 	if err != nil {
 		return err
 	}
-	_, err = d.db.Exec(putPgStr, mhKey, value)
+	_, err = d.db.Exec(putPgStr, mhKey, value, d.BlockNumber.Uint64())
 	return err
 }
 
@@ -95,7 +163,17 @@ func (d *Database) Delete(key []byte) error {
 	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
 }
 
@@ -153,19 +231,19 @@ 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:
@@ -183,7 +261,13 @@ func (d *Database) Compact(start []byte, limit []byte) error {
 // NewBatch creates a write-only database that buffers changes to its host db
 // until a final write is called
 func (d *Database) NewBatch() ethdb.Batch {
-	return NewBatch(d.db, nil)
+	return NewBatch(d.db, nil, d.BlockNumber)
+}
+
+// NewBatchWithSize satisfies the ethdb.Batcher interface.
+// NewBatchWithSize creates a write-only database batch with pre-allocated buffer.
+func (d *Database) NewBatchWithSize(size int) ethdb.Batch {
+	return NewBatch(d.db, nil, d.BlockNumber)
 }
 
 // NewIterator satisfies the ethdb.Iteratee interface
@@ -221,21 +305,41 @@ 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.AncientReaderOp) 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
 }
 
@@ -244,3 +348,20 @@ 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
+}
+
+// AncientDatadir returns an error as we don't have a backing chain freezer.
+func (d *Database) AncientDatadir() (string, error) {
+	return "", errNotSupported
+}

postgres/v1/database_test.go

@@ -18,22 +18,27 @@ package pgipfsethdb_test
 
 import (
 	"math/big"
+	"time"
+
+	"github.com/cerc-io/ipfs-ethdb/v5/postgres/shared"
 
 	"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/cerc-io/ipfs-ethdb/v5/postgres/v1"
 )
 
 var (
 	database        ethdb.Database
 	db              *sqlx.DB
 	err             error
-	testHeader   = types.Header{Number: big.NewInt(1337)}
+	testBlockNumber = big.NewInt(1337)
+	testHeader      = types.Header{Number: testBlockNumber}
 	testValue, _    = rlp.EncodeToBytes(testHeader)
 	testEthKey      = testHeader.Hash().Bytes()
 	testMhKey, _    = pgipfsethdb.MultihashKeyFromKeccak256(testEthKey)
@@ -41,12 +46,26 @@ var (
 
 var _ = Describe("Database", func() {
 	BeforeEach(func() {
-		db, err = pgipfsethdb.TestDB()
+		db, err = shared.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() {
-		err = pgipfsethdb.ResetTestDB(db)
+		groupcache.DeregisterGroup("db")
+		err = shared.ResetTestDB(db)
+		Expect(err).ToNot(HaveOccurred())
+		err = db.Close()
 		Expect(err).ToNot(HaveOccurred())
 	})
 
@@ -57,7 +76,7 @@ var _ = Describe("Database", func() {
 			Expect(has).ToNot(BeTrue())
 		})
 		It("returns true if a key-pair exists in the db", func() {
-			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testMhKey, testValue)
+			_, err = db.Exec("INSERT into ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
 			Expect(err).ToNot(HaveOccurred())
 			has, err := database.Has(testEthKey)
 			Expect(err).ToNot(HaveOccurred())
@@ -72,7 +91,7 @@ var _ = Describe("Database", func() {
 			Expect(err.Error()).To(ContainSubstring("sql: no rows in result set"))
 		})
 		It("returns the value associated with the key, if the pair exists", func() {
-			_, err = db.Exec("INSERT into public.blocks (key, data) VALUES ($1, $2)", testMhKey, testValue)
+			_, err = db.Exec("INSERT into ipld.blocks (key, data, block_number) VALUES ($1, $2, $3)", testMhKey, testValue, testBlockNumber.Uint64())
 			Expect(err).ToNot(HaveOccurred())
 			val, err := database.Get(testEthKey)
 			Expect(err).ToNot(HaveOccurred())

postgres/v1/iterator.go

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

postgres/v1/postgres_suite_test.go

@@ -0,0 +1,29 @@
+// 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 (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestPGIPFSETHDB(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "PG-IPFS ethdb test")
+}

postgres/v1/util.go

@@ -17,9 +17,8 @@
 package pgipfsethdb
 
 import (
-	"github.com/ipfs/go-ipfs-blockstore"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
-	"github.com/ipfs/go-ipfs-ds-help"
+	dshelp "github.com/ipfs/go-ipfs-ds-help"
-	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq" //postgres driver
 	"github.com/multiformats/go-multihash"
 )
@@ -33,17 +32,3 @@ func MultihashKeyFromKeccak256(h []byte) (string, error) {
 	dbKey := dshelp.MultihashToDsKey(mh)
 	return blockstore.BlockPrefix.String() + dbKey.String(), nil
 }
-
-// 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 {
-	_, err := db.Exec("TRUNCATE public.blocks")
-	return err
-}

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"
@@ -29,7 +29,7 @@ func Keccak256ToCid(h []byte, codec uint64) (cid.Cid, error) {
 	if err != nil {
 		return cid.Cid{}, err
 	}
-	return cid.NewCidV1(codec, multihash.Multihash(buf)), nil
+	return cid.NewCidV1(codec, buf), nil
 }
 
 // NewBlock takes a keccak256 hash key and the rlp []byte value it was derived from and creates an ipfs block object