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56 lines
1003 B
56 lines
1003 B
package db
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import (
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"path"
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. "github.com/tendermint/go-common"
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)
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type DB interface {
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Get([]byte) []byte
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Set([]byte, []byte)
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SetSync([]byte, []byte)
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Delete([]byte)
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DeleteSync([]byte)
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Close()
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NewBatch() Batch
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// For debugging
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Print()
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}
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type Batch interface {
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Set(key, value []byte)
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Delete(key []byte)
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Write()
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}
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//-----------------------------------------------------------------------------
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// Database types
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const DBBackendMemDB = "memdb"
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const DBBackendLevelDB = "leveldb"
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const DBBackendLevelDB2 = "leveldb2"
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func NewDB(name string, backend string, dir string) DB {
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switch backend {
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case DBBackendMemDB:
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db := NewMemDB()
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return db
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case DBBackendLevelDB:
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db, err := NewLevelDB(path.Join(dir, name+".db"))
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if err != nil {
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PanicCrisis(err)
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}
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return db
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case DBBackendLevelDB2:
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db, err := NewLevelDB2(path.Join(dir, name+".db"))
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if err != nil {
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PanicCrisis(err)
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}
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return db
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default:
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PanicSanity(Fmt("Unknown DB backend: %v", backend))
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}
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return nil
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}
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