69 lines
1.9 KiB
Go
69 lines
1.9 KiB
Go
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package postgres
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import (
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"database/sql"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/repositories"
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)
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func (db DB) CreateContract(contract core.Contract) error {
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abi := contract.Abi
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var abiToInsert *string
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if abi != "" {
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abiToInsert = &abi
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}
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_, err := db.DB.Exec(
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`INSERT INTO watched_contracts (contract_hash, contract_abi)
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VALUES ($1, $2)
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ON CONFLICT (contract_hash)
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DO UPDATE
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SET contract_hash = $1, contract_abi = $2
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`, contract.Hash, abiToInsert)
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if err != nil {
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return ErrDBInsertFailed
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}
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return nil
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}
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func (db DB) ContractExists(contractHash string) bool {
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var exists bool
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db.DB.QueryRow(
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`SELECT exists(
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SELECT 1
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FROM watched_contracts
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WHERE contract_hash = $1)`, contractHash).Scan(&exists)
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return exists
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}
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func (db DB) FindContract(contractHash string) (core.Contract, error) {
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var hash string
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var abi string
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contract := db.DB.QueryRow(
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`SELECT contract_hash, contract_abi FROM watched_contracts WHERE contract_hash=$1`, contractHash)
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err := contract.Scan(&hash, &abi)
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if err == sql.ErrNoRows {
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return core.Contract{}, repositories.ErrContractDoesNotExist(contractHash)
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}
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savedContract := db.addTransactions(core.Contract{Hash: hash, Abi: abi})
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return savedContract, nil
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}
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func (db DB) addTransactions(contract core.Contract) core.Contract {
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transactionRows, _ := db.DB.Queryx(`
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SELECT tx_hash,
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tx_nonce,
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tx_to,
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tx_from,
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tx_gaslimit,
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tx_gasprice,
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tx_value,
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tx_input_data
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FROM transactions
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WHERE tx_to = $1
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ORDER BY block_id DESC`, contract.Hash)
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transactions := db.loadTransactions(transactionRows)
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savedContract := core.Contract{Hash: contract.Hash, Transactions: transactions, Abi: contract.Abi}
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return savedContract
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}
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