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core, eth: Doc changes

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This commit is contained in:
Nick Johnson 2017-01-12 10:26:30 +00:00
parent f19241bd45
commit faafd4296e
2 changed files with 5 additions and 1 deletions
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5
core/database_util.go
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@ -600,10 +600,13 @@ func GetMipmapBloom(db ethdb.Database, number, level uint64) types.Bloom {
return types.BytesToBloom(bloomDat) return types.BytesToBloom(bloomDat)
} }
// PreimageTable returns a Database instance with the key prefix for preimage entries.
func PreimageTable(db ethdb.Database) ethdb.Database { func PreimageTable(db ethdb.Database) ethdb.Database {
return ethdb.NewTable(db, preimagePrefix) return ethdb.NewTable(db, preimagePrefix)
} }
// WritePreimages writes the provided set of preimages to the database. `number` is the
// current block number, and is used for debug messages only.
func WritePreimages(db ethdb.Database, number uint64, preimages map[common.Hash][]byte) error { func WritePreimages(db ethdb.Database, number uint64, preimages map[common.Hash][]byte) error {
table := PreimageTable(db) table := PreimageTable(db)
batch := table.NewBatch() batch := table.NewBatch()
@ -620,7 +623,7 @@ func WritePreimages(db ethdb.Database, number uint64, preimages map[common.Hash]
if err := batch.Write(); err != nil { if err := batch.Write(); err != nil {
return fmt.Errorf("preimage write fail for block %d: %v", number, err) return fmt.Errorf("preimage write fail for block %d: %v", number, err)
} }
glog.V(logger.Error).Infof("%d preimages in block %d, including %d new", len(preimages), number, hitCount) glog.V(logger.Debug).Infof("%d preimages in block %d, including %d new", len(preimages), number, hitCount)
} }
return nil return nil
} }

1
eth/api.go
View file

@ -561,6 +561,7 @@ func (api *PrivateDebugAPI) TraceTransaction(ctx context.Context, txHash common.
return nil, errors.New("database inconsistency") return nil, errors.New("database inconsistency")
} }
// Preimage is a debug API function that returns the preimage for a sha3 hash, if known.
func (api *PrivateDebugAPI) Preimage(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) { func (api *PrivateDebugAPI) Preimage(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) {
db := core.PreimageTable(api.eth.ChainDb()) db := core.PreimageTable(api.eth.ChainDb())
return db.Get(hash.Bytes()) return db.Get(hash.Bytes())