Create interface.go

Author: heeeeeng

interface.go

@@ -0,0 +1,30 @@
+package ogdb
+
+// Code using batches should try to add this much data to the batch.
+// The value was determined empirically.
+const IdealBatchSize = 100 * 1024
+
+// Putter wraps the database write operation supported by both batches and regular databases.
+type Putter interface {
+	Put(key []byte, value []byte) error
+}
+
+// Database wraps all database operations. All methods are safe for concurrent use.
+type Database interface {
+	Putter
+	Get(key []byte) ([]byte, error)
+	Has(key []byte) (bool, error)
+	Delete(key []byte) error
+	Close()
+	NewBatch() Batch
+}
+
+// Batch is a write-only database that commits changes to its host database
+// when Write is called. Batch cannot be used concurrently.
+type Batch interface {
+	Putter
+	ValueSize() int // amount of data in the batch
+	Write() error
+	// Reset resets the batch for reuse
+	Reset()
+}