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-rw-r--r--ethdb/memory_database.go63
1 files changed, 63 insertions, 0 deletions
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
+}