cerc-io/ipfs-ethdb
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Merge pull request #58 from cerc-io/roy/v5-dev

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Update to v5
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Ian Norden 2023-04-09 12:16:03 -05:00 committed by GitHub
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6 changed files with 21 additions and 10 deletions
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6
README.md
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@ -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/v5"
"github.com/cerc-io/ipfs-ethdb/v5"
)
func main() {

10
postgres/doc.md
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@ -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.
@ -18,7 +18,7 @@ import (
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/trie"
"github.com/jmoiron/sqlx"
"github.com/vulcanize/ipfs-ethdb/v5/postgres"
"github.com/cerc-io/ipfs-ethdb/v5/postgres/v1"
)
func main() {
@ -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)

5
postgres/shared/util.go
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@ -16,7 +16,9 @@
package shared
import "github.com/jmoiron/sqlx"
import (
"github.com/jmoiron/sqlx"
)
/*
Hostname: "localhost",
@ -25,7 +27,6 @@ import "github.com/jmoiron/sqlx"
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

6
postgres/v1/database.go
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@ -40,6 +40,12 @@ var (
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())"
DefaultCacheConfig = CacheConfig{
Name: "db",
Size: 3000000, // 3MB
ExpiryDuration: time.Hour,
}
)
var _ ethdb.Database = &Database{}

2
util.go
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@ -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