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authorFelix Lange <fjl@twurst.com>2014-10-23 21:01:27 +0800
committerFelix Lange <fjl@twurst.com>2014-10-23 21:01:27 +0800
commit69baa465ea69ae60eed802445cf0132b9eb69934 (patch)
treeb09da7582b5c4850d4db13aee808f2fef2f97de0 /ethdb
parent50fd46924900869e7210217c6a07979b544991c8 (diff)
parentfeef194829b07570e91873ed5d1e8cc51e8fa430 (diff)
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Merge eth-go repository into go-ethereum
mist, etheruem have been moved to cmd/
Diffstat (limited to 'ethdb')
-rw-r--r--ethdb/.gitignore12
-rw-r--r--ethdb/README.md11
-rw-r--r--ethdb/database.go73
-rw-r--r--ethdb/database_test.go6
-rw-r--r--ethdb/memory_database.go63
5 files changed, 165 insertions, 0 deletions
diff --git a/ethdb/.gitignore b/ethdb/.gitignore
new file mode 100644
index 000000000..f725d58d1
--- /dev/null
+++ b/ethdb/.gitignore
@@ -0,0 +1,12 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+# git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*un~
+.DS_Store
+*/**/.DS_Store
+
diff --git a/ethdb/README.md b/ethdb/README.md
new file mode 100644
index 000000000..5bed8eedc
--- /dev/null
+++ b/ethdb/README.md
@@ -0,0 +1,11 @@
+# ethdb
+
+The ethdb package contains the ethereum database interfaces
+
+# Installation
+
+`go get github.com/ethereum/ethdb-go`
+
+# Usage
+
+Todo :-)
diff --git a/ethdb/database.go b/ethdb/database.go
new file mode 100644
index 000000000..de3afd74b
--- /dev/null
+++ b/ethdb/database.go
@@ -0,0 +1,73 @@
+package ethdb
+
+import (
+ "fmt"
+ "path"
+
+ "github.com/ethereum/go-ethereum/ethutil"
+ "github.com/syndtr/goleveldb/leveldb"
+)
+
+type LDBDatabase struct {
+ db *leveldb.DB
+}
+
+func NewLDBDatabase(name string) (*LDBDatabase, error) {
+ dbPath := path.Join(ethutil.Config.ExecPath, name)
+
+ // Open the db
+ db, err := leveldb.OpenFile(dbPath, nil)
+ if err != nil {
+ return nil, err
+ }
+
+ database := &LDBDatabase{db: db}
+
+ return database, nil
+}
+
+func (db *LDBDatabase) Put(key []byte, value []byte) {
+ err := db.db.Put(key, value, nil)
+ if err != nil {
+ fmt.Println("Error put", err)
+ }
+}
+
+func (db *LDBDatabase) Get(key []byte) ([]byte, error) {
+ return db.db.Get(key, nil)
+}
+
+func (db *LDBDatabase) Delete(key []byte) error {
+ return db.db.Delete(key, nil)
+}
+
+func (db *LDBDatabase) Db() *leveldb.DB {
+ return db.db
+}
+
+func (db *LDBDatabase) LastKnownTD() []byte {
+ data, _ := db.db.Get([]byte("LTD"), nil)
+
+ if len(data) == 0 {
+ data = []byte{0x0}
+ }
+
+ return data
+}
+
+func (db *LDBDatabase) Close() {
+ // Close the leveldb database
+ db.db.Close()
+}
+
+func (db *LDBDatabase) Print() {
+ iter := db.db.NewIterator(nil, nil)
+ for iter.Next() {
+ key := iter.Key()
+ value := iter.Value()
+
+ fmt.Printf("%x(%d): ", key, len(key))
+ node := ethutil.NewValueFromBytes(value)
+ fmt.Printf("%v\n", node)
+ }
+}
diff --git a/ethdb/database_test.go b/ethdb/database_test.go
new file mode 100644
index 000000000..bb1b4de2a
--- /dev/null
+++ b/ethdb/database_test.go
@@ -0,0 +1,6 @@
+package ethdb
+
+import (
+ _ "fmt"
+ _ "testing"
+)
diff --git a/ethdb/memory_database.go b/ethdb/memory_database.go
new file mode 100644
index 000000000..459373eea
--- /dev/null
+++ b/ethdb/memory_database.go
@@ -0,0 +1,63 @@
+package ethdb
+
+import (
+ "fmt"
+
+ "github.com/ethereum/go-ethereum/ethutil"
+)
+
+/*
+ * This is a test memory database. Do not use for any production it does not get persisted
+ */
+type MemDatabase struct {
+ db map[string][]byte
+}
+
+func NewMemDatabase() (*MemDatabase, error) {
+ db := &MemDatabase{db: make(map[string][]byte)}
+
+ return db, nil
+}
+
+func (db *MemDatabase) Put(key []byte, value []byte) {
+ db.db[string(key)] = value
+}
+
+func (db *MemDatabase) Get(key []byte) ([]byte, error) {
+ return db.db[string(key)], nil
+}
+
+/*
+func (db *MemDatabase) GetKeys() []*ethutil.Key {
+ data, _ := db.Get([]byte("KeyRing"))
+
+ return []*ethutil.Key{ethutil.NewKeyFromBytes(data)}
+}
+*/
+
+func (db *MemDatabase) Delete(key []byte) error {
+ delete(db.db, string(key))
+
+ return nil
+}
+
+func (db *MemDatabase) Print() {
+ for key, val := range db.db {
+ fmt.Printf("%x(%d): ", key, len(key))
+ node := ethutil.NewValueFromBytes(val)
+ fmt.Printf("%q\n", node.Interface())
+ }
+}
+
+func (db *MemDatabase) Close() {
+}
+
+func (db *MemDatabase) LastKnownTD() []byte {
+ data, _ := db.Get([]byte("LastKnownTotalDifficulty"))
+
+ if len(data) == 0 || data == nil {
+ data = []byte{0x0}
+ }
+
+ return data
+}