package observers import ( "github.com/8thlight/vulcanizedb/core" "github.com/jmoiron/sqlx" _ "github.com/lib/pq" ) type BlockchainDBObserver struct { Db *sqlx.DB } func (observer BlockchainDBObserver) NotifyBlockAdded(block core.Block) { insertedBlockId := saveBlock(observer, block) saveTransactions(insertedBlockId, block.Transactions, observer) } func saveBlock(observer BlockchainDBObserver, block core.Block) int64 { insertedBlock := observer.Db.QueryRow("Insert INTO blocks "+ "(block_number, block_gaslimit, block_gasused, block_time) "+ "VALUES ($1, $2, $3, $4) RETURNING id", block.Number, block.GasLimit, block.GasUsed, block.Time) var blockId int64 insertedBlock.Scan(&blockId) return blockId } func saveTransactions(blockId int64, transactions []core.Transaction, observer BlockchainDBObserver) { for _, transaction := range transactions { observer.Db.MustExec("Insert INTO transactions "+ "(block_id, tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value) VALUES ($1, $2, $3, $4, $5, $6, $7)", blockId, transaction.Hash, transaction.Nonce, transaction.To, transaction.GasLimit, transaction.GasPrice, transaction.Value) } }