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08eb16eecb
Former-commit-id: 2b402c6cce64f0c38d6d3ce48b4818c839bec19d [formerly e3ea64a3e937d89f586af617f3b899bb950e30b7] Former-commit-id: ddd9e507e1e49758152ddf6e8827864df700dad7
32 lines
862 B
Go
32 lines
862 B
Go
package database
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import (
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"path/filepath"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/micro/cli"
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)
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// ShardBackend defines an interface for a shardDB's necessary method
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// signatures.
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type ShardBackend interface {
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Get(k common.Hash) (*[]byte, error)
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Has(k common.Hash) bool
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Put(k common.Hash, val []byte) error
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Delete(k common.Hash) error
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}
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// NewShardDB initializes a shardDB that writes to local disk.
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// TODO: make it return ShardBackend but modify interface methods.
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func NewShardDB(ctx *cli.Context, name string) (*ethdb.LDBDatabase, error) {
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dataDir := ""
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path := filepath.Join(dataDir, name)
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// Uses default cache and handles values.
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// TODO: allow these to be set based on cli context.
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// TODO: fix interface - lots of methods do not match.
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return ethdb.NewLDBDatabase(path, 16, 16)
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}
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