diff --git a/README.md b/README.md
index 550c0be..ff84562 100644
--- a/README.md
+++ b/README.md
@@ -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. Here at Vulcanize we
-have [extended IPFS](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 database.
+have [extended IPFS](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).
Additionally, [we have extended go-ethereum](https://github.com/vulcanize/go-ethereum/releases/tag/v1.9.11-statediff-0.0.2) to enable the efficient export of state data in the form of state diff objects.
Together, this allows us to store all Ethereum data on Postgres-backed IPFS.
diff --git a/batch.go b/batch.go
index de7f14d..82b9f58 100644
--- a/batch.go
+++ b/batch.go
@@ -17,85 +17,124 @@
package ipfsethdb
import (
+ "errors"
+
"github.com/ethereum/go-ethereum/ethdb"
- "github.com/jmoiron/sqlx"
+ "github.com/hashicorp/golang-lru"
+ "github.com/ipfs/go-block-format"
+ "github.com/ipfs/go-blockservice"
)
-// Batch is the type that satisfies the ethdb.Batch interface for PG-IPFS Ethereum data
+var (
+ EvictionWarningErr = errors.New("warn: batch has exceeded capacity, data has been evicted")
+)
+
+// 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
type Batch struct {
- db *sqlx.DB
- tx *sqlx.Tx
- size int
+ blockService blockservice.BlockService
+ putCache, deleteCache *lru.Cache
+ valueSize int
}
-// NewBatch returns a ethdb.Batch interface for PG-IPFS
-func NewBatch(db *sqlx.DB) ethdb.Batch {
- return &Batch{
- db: db,
+// NewBatch returns a ethdb.Batch interface for IPFS
+func NewBatch(bs blockservice.BlockService, capacity int) (ethdb.Batch, error) {
+ putCache, err := lru.New(capacity)
+ if err != nil {
+ return nil, err
}
+ deleteCache, err := lru.New(capacity)
+ if err != nil {
+ return nil, err
+ }
+ return &Batch{
+ blockService: bs,
+ putCache: putCache,
+ deleteCache: deleteCache,
+ }, nil
}
// Put satisfies the ethdb.Batch interface
// Put inserts the given value into the key-value data store
+// Key is expected to be the keccak256 hash of value
+// Returns an error when batch capacity has been exceeded and data was evicted
+// It is up to ensure they do not exceed capacity
+// The alternative is to check the cache len vs its capacity before inserting
+// but this adds additional overhead to every Put/Delete
func (b *Batch) Put(key []byte, value []byte) (err error) {
- if b.tx == nil {
- b.Reset()
+ b.valueSize += len(value)
+ if b.putCache.Add(key, value) {
+ return EvictionWarningErr
}
- mhKey, err := MultihashKeyFromKeccak256(key)
- if err != nil {
- return err
- }
- if _, err = b.tx.Exec(putPgStr, mhKey, value); err != nil {
- return err
- }
- b.size += len(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) {
- if b.tx == nil {
- b.Reset()
+ if b.deleteCache.Add(key, true) {
+ return EvictionWarningErr
}
- mhKey, err := MultihashKeyFromKeccak256(key)
- if err != nil {
- return err
- }
- _, err = b.tx.Exec(deletePgStr, mhKey)
- return err
+ return nil
}
// 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.size
+ 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
+ puts := make([]blocks.Block, b.putCache.Len())
+ for i, key := range b.putCache.Keys() {
+ val, _ := b.putCache.Get(key) // don't need to check "ok"s, the key is known and val is always []byte
+ b, err := NewBlock(key.([]byte), val.([]byte))
+ if err != nil {
+ return err
+ }
+ puts[i] = b
}
- return b.tx.Commit()
+ if err := b.blockService.AddBlocks(puts); err != nil {
+ return err
+ }
+ for _, key := range b.deleteCache.Keys() {
+ c, err := Keccak256ToCid(key.([]byte))
+ if err != nil {
+ return err
+ }
+ if err := b.blockService.DeleteBlock(c); err != nil {
+ return err
+ }
+ }
+ return nil
}
// Replay satisfies the ethdb.Batch interface
// Replay replays the batch contents
func (b *Batch) Replay(w ethdb.KeyValueWriter) error {
- return errNotSupported
+ for _, key := range b.putCache.Keys() {
+ val, _ := b.putCache.Get(key)
+ if err := w.Put(key.([]byte), val.([]byte)); err != nil {
+ return err
+ }
+ }
+ for _, key := range b.deleteCache.Keys() {
+ if err := w.Delete(key.([]byte)); err != nil {
+ return err
+ }
+ }
+ return nil
}
// 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.size = 0
+ b.deleteCache.Purge()
+ b.putCache.Purge()
+ b.valueSize = 0
}
diff --git a/datastore.go b/datastore.go
new file mode 100644
index 0000000..6669bbc
--- /dev/null
+++ b/datastore.go
@@ -0,0 +1,207 @@
+// 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 .
+
+package ipfsethdb
+
+import (
+ "context"
+ "errors"
+ "fmt"
+ "strconv"
+ "strings"
+
+ "github.com/ethereum/go-ethereum/ethdb"
+ "github.com/ipfs/go-blockservice"
+)
+
+var (
+ defaultBatchCapacity = 1024
+ errNotSupported = errors.New("this operation is not supported")
+)
+
+// 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
+type Database struct {
+ blockService blockservice.BlockService
+}
+
+// NewKeyValueStore returns a ethdb.KeyValueStore interface for IPFS
+func NewKeyValueStore(bs blockservice.BlockService) ethdb.KeyValueStore {
+ return &Database{
+ blockService: bs,
+ }
+}
+
+// NewDatabase returns a ethdb.Database interface for IPFS
+func NewDatabase(bs blockservice.BlockService) ethdb.Database {
+ return &Database{
+ blockService: bs,
+ }
+}
+
+// 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
+func (d *Database) Has(key []byte) (bool, error) {
+ c, err := Keccak256ToCid(key) // we are using cidv0 because we don't know the codec and codec doesn't matter, the datastore key is multihash-only derived
+ if err != nil {
+ return false, err
+ }
+ return d.blockService.Blockstore().Has(c)
+}
+
+// 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) {
+ c, err := Keccak256ToCid(key)
+ if err != nil {
+ return nil, err
+ }
+ block, err := d.blockService.GetBlock(context.Background(), c)
+ return block.RawData(), err
+}
+
+// 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
+func (d *Database) Put(key []byte, value []byte) error {
+ b, err := NewBlock(key, value)
+ if err != nil {
+ return err
+ }
+ return d.blockService.AddBlock(b)
+}
+
+// Delete satisfies the ethdb.KeyValueWriter interface
+// Delete removes the key from the key-value data store
+func (d *Database) Delete(key []byte) error {
+ c, err := Keccak256ToCid(key)
+ if err != nil {
+ return err
+ }
+ return d.blockService.DeleteBlock(c)
+}
+
+// DatabaseProperty enum type
+type DatabaseProperty int
+
+const (
+ Unknown DatabaseProperty = iota
+ ExchangeOnline
+)
+
+// DatabasePropertyFromString helper function
+func DatabasePropertyFromString(property string) (DatabaseProperty, error) {
+ switch strings.ToLower(property) {
+ case "exchange", "online":
+ return ExchangeOnline, 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 ExchangeOnline:
+ online := d.blockService.Exchange().IsOnline()
+ return strconv.FormatBool(online), 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 {
+ b, err := NewBatch(d.blockService, defaultBatchCapacity)
+ 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
+// 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.blockService)
+}
+
+// Close satisfies the io.Closer interface
+// Close closes the db connection
+func (d *Database) Close() error {
+ return d.blockService.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
+}
+
+// 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
+// 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, receipt, td []byte) error {
+ return errNotSupported
+}
+
+// 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 {
+ 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
+}
diff --git a/go.mod b/go.mod
index b8ea13c..04f5a2c 100644
--- a/go.mod
+++ b/go.mod
@@ -4,11 +4,15 @@ go 1.13
require (
github.com/ethereum/go-ethereum v1.9.15
+ github.com/hashicorp/golang-lru v0.5.4
+ github.com/ipfs/go-block-format v0.0.2
+ github.com/ipfs/go-blockservice v0.1.3
+ github.com/ipfs/go-cid v0.0.5
github.com/ipfs/go-ipfs-blockstore v1.0.0
github.com/ipfs/go-ipfs-ds-help v1.0.0
github.com/jmoiron/sqlx v1.2.0
github.com/lib/pq v1.0.0
github.com/multiformats/go-multihash v0.0.13
- github.com/onsi/ginkgo v1.7.0
- github.com/onsi/gomega v1.4.3
+ github.com/onsi/ginkgo v1.8.0
+ github.com/onsi/gomega v1.5.0
)
diff --git a/go.sum b/go.sum
index a20d0ae..035d157 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,4 @@
+github.com/AndreasBriese/bbloom v0.0.0-20180913140656-343706a395b7/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
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=
@@ -12,10 +13,12 @@ github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN
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=
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github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
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/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
@@ -24,21 +27,38 @@ github.com/aristanetworks/goarista v0.0.0-20170210015632-ea17b1a17847/go.mod h1:
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@@ -46,6 +66,7 @@ github.com/fatih/color v1.3.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
github.com/fjl/memsize v0.0.0-20180418122429-ca190fb6ffbc/go.mod h1:VvhXpOYNQvB+uIk2RvXzuaQtkQJzzIx6lSBe1xv7hi0=
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github.com/go-ole/go-ole v1.2.1/go.mod h1:7FAglXiTm7HKlQRDeOQ6ZNUHidzCWXuZWq/1dTyBNF8=
@@ -57,16 +78,21 @@ github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7a
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@@ -74,36 +100,76 @@ github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpO
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@@ -111,33 +177,96 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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@@ -148,8 +277,12 @@ github.com/olekukonko/tablewriter v0.0.2-0.20190409134802-7e037d187b0c/go.mod h1
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@@ -170,6 +303,8 @@ github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD
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@@ -182,14 +317,25 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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+golang.org/x/crypto v0.0.0-20190225124518-7f87c0fbb88b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20190530122614-20be4c3c3ed5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4 h1:QmwruyY+bKbDDL0BaglrbZABEali68eoMFhTZpCjYVA=
golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@@ -197,6 +343,7 @@ golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73r
golang.org/x/net v0.0.0-20181011144130-49bb7cea24b1/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190227160552-c95aed5357e7/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190611141213-3f473d35a33a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 h1:Jcxah/M+oLZ/R4/z5RzfPzGbPXnVDPkEDtf2JnuxN+U=
golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -206,7 +353,9 @@ golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5h
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190219092855-153ac476189d/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190228124157-a34e9553db1e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190610200419-93c9922d18ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -216,6 +365,7 @@ golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxb
golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/iterator.go b/iterator.go
index d7ae5e3..d6b6ec6 100644
--- a/iterator.go
+++ b/iterator.go
@@ -17,27 +17,29 @@
package ipfsethdb
import (
+ "context"
+
"github.com/ethereum/go-ethereum/ethdb"
- "github.com/jmoiron/sqlx"
+ "github.com/ipfs/go-blockservice"
)
-// Iterator is the type that satisfies the ethdb.Iterator interface for PG-IPFS Ethereum data
+// 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.
// 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
+ blockService blockservice.BlockService
currentKey, prefix []byte
err error
}
-// NewIterator returns a ethdb.Iterator interface for PG-IPFS
-func NewIterator(start, prefix []byte, db *sqlx.DB) ethdb.Iterator {
+// NewIterator returns an ethdb.Iterator interface for PG-IPFS
+func NewIterator(start, prefix []byte, bs blockservice.BlockService) ethdb.Iterator {
return &Iterator{
- db: db,
- prefix: prefix,
- currentKey: start,
+ blockService: bs,
+ prefix: prefix,
+ currentKey: start,
}
}
@@ -70,19 +72,22 @@ 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 {
- mhKey, err := MultihashKeyFromKeccak256(i.currentKey)
+ c, err := Keccak256ToCid(i.currentKey)
if err != nil {
i.err = err
return nil
}
- var data []byte
- i.err = i.db.Get(&data, getPgStr, mhKey)
- return data
+ block, err := i.blockService.GetBlock(context.Background(), c)
+ if err != nil {
+ i.err = err
+ return nil
+ }
+ return block.RawData()
}
// 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()
+ i.blockService.Close()
}
diff --git a/postgres/batch.go b/postgres/batch.go
new file mode 100644
index 0000000..838ddf9
--- /dev/null
+++ b/postgres/batch.go
@@ -0,0 +1,104 @@
+// 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 .
+
+package pgipfsethdb
+
+import (
+ "github.com/ethereum/go-ethereum/ethdb"
+ "github.com/jmoiron/sqlx"
+
+ "github.com/vulcanize/pg-ipfs-ethdb"
+)
+
+// 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
+}
+
+// NewBatch returns a ethdb.Batch interface for PG-IPFS
+func NewBatch(db *sqlx.DB) ethdb.Batch {
+ return &Batch{
+ db: db,
+ }
+}
+
+// Put satisfies the ethdb.Batch interface
+// 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) {
+ if b.tx == nil {
+ b.Reset()
+ }
+ mhKey, err := ipfsethdb.MultihashKeyFromKeccak256(key)
+ if err != nil {
+ return err
+ }
+ if _, err = b.tx.Exec(putPgStr, mhKey, value); 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(key []byte) (err error) {
+ if b.tx == nil {
+ b.Reset()
+ }
+ mhKey, err := ipfsethdb.MultihashKeyFromKeccak256(key)
+ if err != nil {
+ return err
+ }
+ _, err = b.tx.Exec(deletePgStr, mhKey)
+ 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
+}
diff --git a/batch_test.go b/postgres/batch_test.go
similarity index 97%
rename from batch_test.go
rename to postgres/batch_test.go
index 433b241..64fff18 100644
--- a/batch_test.go
+++ b/postgres/batch_test.go
@@ -14,7 +14,7 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see .
-package ipfsethdb_test
+package pgipfsethdb_test
import (
"math/big"
@@ -26,6 +26,7 @@ import (
. "github.com/onsi/gomega"
"github.com/vulcanize/pg-ipfs-ethdb"
+ "github.com/vulcanize/pg-ipfs-ethdb/postgres"
)
var (
@@ -39,7 +40,7 @@ var _ = Describe("Batch", func() {
BeforeEach(func() {
db, err = ipfsethdb.TestDB()
Expect(err).ToNot(HaveOccurred())
- database = ipfsethdb.NewDatabase(db)
+ database = pgipfsethdb.NewDatabase(db)
batch = database.NewBatch()
})
AfterEach(func() {
diff --git a/database.go b/postgres/database.go
similarity index 94%
rename from database.go
rename to postgres/database.go
index 4ee318a..d8acec0 100644
--- a/database.go
+++ b/postgres/database.go
@@ -14,7 +14,7 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see .
-package ipfsethdb
+package pgipfsethdb
import (
"errors"
@@ -23,6 +23,8 @@ import (
"github.com/ethereum/go-ethereum/ethdb"
"github.com/jmoiron/sqlx"
+
+ "github.com/vulcanize/pg-ipfs-ethdb"
)
var errNotSupported = errors.New("this operation is not supported")
@@ -35,7 +37,7 @@ var (
dbSizePgStr = "SELECT pg_database_size(current_database())"
)
-// Database is the type that satisfies the ethdb.Database and ethdb.KeyValueStore interfaces for PG-IPFS Ethereum data
+// 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
}
@@ -57,7 +59,7 @@ func NewDatabase(db *sqlx.DB) ethdb.Database {
// Has satisfies the ethdb.KeyValueReader interface
// Has retrieves if a key is present in the key-value data store
func (d *Database) Has(key []byte) (bool, error) {
- mhKey, err := MultihashKeyFromKeccak256(key)
+ mhKey, err := ipfsethdb.MultihashKeyFromKeccak256(key)
if err != nil {
return false, err
}
@@ -68,7 +70,7 @@ func (d *Database) Has(key []byte) (bool, error) {
// 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) {
- mhKey, err := MultihashKeyFromKeccak256(key)
+ mhKey, err := ipfsethdb.MultihashKeyFromKeccak256(key)
if err != nil {
return nil, err
}
@@ -78,8 +80,9 @@ func (d *Database) Get(key []byte) ([]byte, error) {
// 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
func (d *Database) Put(key []byte, value []byte) error {
- mhKey, err := MultihashKeyFromKeccak256(key)
+ mhKey, err := ipfsethdb.MultihashKeyFromKeccak256(key)
if err != nil {
return err
}
@@ -90,7 +93,7 @@ func (d *Database) Put(key []byte, value []byte) error {
// Delete satisfies the ethdb.KeyValueWriter interface
// Delete removes the key from the key-value data store
func (d *Database) Delete(key []byte) error {
- mhKey, err := MultihashKeyFromKeccak256(key)
+ mhKey, err := ipfsethdb.MultihashKeyFromKeccak256(key)
if err != nil {
return err
}
diff --git a/database_test.go b/postgres/database_test.go
similarity index 96%
rename from database_test.go
rename to postgres/database_test.go
index cedcbc0..eb49278 100644
--- a/database_test.go
+++ b/postgres/database_test.go
@@ -14,7 +14,7 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see .
-package ipfsethdb_test
+package pgipfsethdb_test
import (
"math/big"
@@ -27,6 +27,7 @@ import (
. "github.com/onsi/gomega"
"github.com/vulcanize/pg-ipfs-ethdb"
+ "github.com/vulcanize/pg-ipfs-ethdb/postgres"
)
var (
@@ -43,7 +44,7 @@ var _ = Describe("Database", func() {
BeforeEach(func() {
db, err = ipfsethdb.TestDB()
Expect(err).ToNot(HaveOccurred())
- database = ipfsethdb.NewDatabase(db)
+ database = pgipfsethdb.NewDatabase(db)
})
AfterEach(func() {
err = ipfsethdb.ResetTestDB(db)
diff --git a/postgres/iterator.go b/postgres/iterator.go
new file mode 100644
index 0000000..2020f6e
--- /dev/null
+++ b/postgres/iterator.go
@@ -0,0 +1,90 @@
+// 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 .
+
+package pgipfsethdb
+
+import (
+ "github.com/ethereum/go-ethereum/ethdb"
+ "github.com/jmoiron/sqlx"
+
+ "github.com/vulcanize/pg-ipfs-ethdb"
+)
+
+// 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 {
+ mhKey, err := ipfsethdb.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.Close()
+}
diff --git a/suite_test.go b/postgres/postgres_suite_test.go
similarity index 93%
rename from suite_test.go
rename to postgres/postgres_suite_test.go
index 7f019df..fa1f767 100644
--- a/suite_test.go
+++ b/postgres/postgres_suite_test.go
@@ -14,7 +14,7 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see .
-package ipfsethdb_test
+package pgipfsethdb_test
import (
"testing"
@@ -23,7 +23,7 @@ import (
. "github.com/onsi/gomega"
)
-func TestIPFSPGIPFSETHDB(t *testing.T) {
+func TestPGIPFSETHDB(t *testing.T) {
RegisterFailHandler(Fail)
RunSpecs(t, "PG-IPFS ethdb test")
}
diff --git a/util.go b/util.go
index 834bdce..a6b9c0c 100644
--- a/util.go
+++ b/util.go
@@ -17,6 +17,8 @@
package ipfsethdb
import (
+ "github.com/ipfs/go-block-format"
+ "github.com/ipfs/go-cid"
"github.com/ipfs/go-ipfs-blockstore"
"github.com/ipfs/go-ipfs-ds-help"
"github.com/jmoiron/sqlx"
@@ -25,8 +27,8 @@ import (
)
// MultihashKeyFromKeccak256 converts keccak256 hash bytes into a blockstore-prefixed multihash db key string
-func MultihashKeyFromKeccak256(b []byte) (string, error) {
- mh, err := multihash.Encode(b, multihash.KECCAK_256)
+func MultihashKeyFromKeccak256(h []byte) (string, error) {
+ mh, err := multihash.Encode(h, multihash.KECCAK_256)
if err != nil {
return "", err
}
@@ -47,3 +49,21 @@ func ResetTestDB(db *sqlx.DB) error {
_, err := db.Exec("TRUNCATE public.blocks")
return err
}
+
+// Keccak256ToCid takes a keccak256 hash and returns its cid v0 using the provided codec.
+func Keccak256ToCid(h []byte) (cid.Cid, error) {
+ buf, err := multihash.Encode(h, multihash.KECCAK_256)
+ if err != nil {
+ return cid.Cid{}, err
+ }
+ return cid.NewCidV0(multihash.Multihash(buf)), nil
+}
+
+// NewBlock takes a keccak256 hash key and the rlp []byte value it was derived from and creates an ipfs block object
+func NewBlock(key, value []byte) (blocks.Block, error) {
+ c, err := Keccak256ToCid(key) // we are using cidv0 because we don't know the codec and codec doesn't matter, the datastore key is multihash-only derived
+ if err != nil {
+ return nil, err
+ }
+ return blocks.NewBlockWithCid(value, c)
+}