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/v5"
+    "github.com/cerc-io/ipfs-ethdb/v5"
 )
 
 func main() {

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.
@@ -18,7 +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)

postgres/shared/util.go

@@ -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

postgres/v0/database.go

@@ -278,9 +278,10 @@ func (d *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator {
 	return NewIterator(start, prefix, d.db)
 }
 
-// Close satisfies the io.Closer interface
+// Close satisfies the io.Closer interface.
-// Close closes the db connection
+// Close closes the db connection and deregisters from groupcache.
 func (d *Database) Close() error {
+	groupcache.DeregisterGroup(d.cache.Name())
 	return d.db.DB.Close()
 }
 

postgres/v1/database.go

@@ -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{}

util.go

@@ -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