From 21786bcf52e89e627b236af1800e9a3c9bdd3c78 Mon Sep 17 00:00:00 2001 From: Ian Norden Date: Mon, 29 Jun 2020 16:11:29 -0500 Subject: [PATCH] datastore-agnostic blockservice based types --- README.md | 2 +- batch.go | 115 ++++++---- datastore.go | 207 ++++++++++++++++++ go.mod | 8 +- go.sum | 150 +++++++++++++ iterator.go | 31 +-- postgres/batch.go | 104 +++++++++ batch_test.go => postgres/batch_test.go | 5 +- database.go => postgres/database.go | 15 +- database_test.go => postgres/database_test.go | 5 +- postgres/iterator.go | 90 ++++++++ .../postgres_suite_test.go | 4 +- util.go | 24 +- 13 files changed, 692 insertions(+), 68 deletions(-) create mode 100644 datastore.go create mode 100644 postgres/batch.go rename batch_test.go => postgres/batch_test.go (97%) rename database.go => postgres/database.go (94%) rename database_test.go => postgres/database_test.go (96%) create mode 100644 postgres/iterator.go rename suite_test.go => postgres/postgres_suite_test.go (93%) 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= +github.com/Kubuxu/go-os-helper v0.0.1/go.mod h1:N8B+I7vPCT80IcP58r50u4+gEEcsZETFUpAzWW2ep1Y= github.com/OneOfOne/xxhash 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h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA= github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI= github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA= @@ -182,14 +317,25 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= +github.com/syndtr/goleveldb v1.0.0/go.mod h1:ZVVdQEZoIme9iO1Ch2Jdy24qqXrMMOU6lpPAyBWyWuQ= github.com/syndtr/goleveldb v1.0.1-0.20190923125748-758128399b1d/go.mod h1:9OrXJhf154huy1nPWmuSrkgjPUtUNhA+Zmy+6AESzuA= github.com/tyler-smith/go-bip39 v1.0.1-0.20181017060643-dbb3b84ba2ef/go.mod h1:sJ5fKU0s6JVwZjjcUEX2zFOnvq0ASQ2K9Zr6cf67kNs= github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0= +github.com/whyrusleeping/go-keyspace v0.0.0-20160322163242-5b898ac5add1/go.mod h1:8UvriyWtv5Q5EOgjHaSseUEdkQfvwFv1I/In/O2M9gc= github.com/whyrusleeping/go-logging v0.0.0-20170515211332-0457bb6b88fc h1:9lDbC6Rz4bwmou+oE6Dt4Cb2BGMur5eR/GYptkKUVHo= github.com/whyrusleeping/go-logging v0.0.0-20170515211332-0457bb6b88fc/go.mod h1:bopw91TMyo8J3tvftk8xmU2kPmlrt4nScJQZU2hE5EM= +github.com/whyrusleeping/go-notifier v0.0.0-20170827234753-097c5d47330f/go.mod h1:cZNvX9cFybI01GriPRMXDtczuvUhgbcYr9iCGaNlRv8= +github.com/whyrusleeping/mafmt v1.2.8/go.mod h1:faQJFPbLSxzD9xpA02ttW/tS9vZykNvXwGvqIpk20FA= +github.com/whyrusleeping/mdns v0.0.0-20180901202407-ef14215e6b30/go.mod h1:j4l84WPFclQPj320J9gp0XwNKBb3U0zt5CBqjPp22G4= +github.com/whyrusleeping/multiaddr-filter v0.0.0-20160516205228-e903e4adabd7/go.mod h1:X2c0RVCI1eSUFI8eLcY3c0423ykwiUdxLJtkDvruhjI= github.com/wsddn/go-ecdh v0.0.0-20161211032359-48726bab9208/go.mod h1:IotVbo4F+mw0EzQ08zFqg7pK3FebNXpaMsRy2RT+Ees= +golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= +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) +}