06f78e0083
- Adds interfaces for developers to build handlers that update data in response to log events - Resolves #29
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
package contract_summary
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"github.com/vulcanize/vulcanizedb/pkg/core"
|
|
"github.com/vulcanize/vulcanizedb/pkg/datastore"
|
|
)
|
|
|
|
type ContractSummary struct {
|
|
Attributes core.ContractAttributes
|
|
BlockNumber *big.Int
|
|
Contract core.Contract
|
|
ContractHash string
|
|
LastTransaction *core.Transaction
|
|
NumberOfTransactions int
|
|
blockChain core.Blockchain
|
|
}
|
|
|
|
func NewSummary(blockchain core.Blockchain, contractRepository datastore.ContractRepository, contractHash string, blockNumber *big.Int) (ContractSummary, error) {
|
|
contract, err := contractRepository.GetContract(contractHash)
|
|
if err != nil {
|
|
return ContractSummary{}, err
|
|
}
|
|
return newContractSummary(blockchain, contract, blockNumber), nil
|
|
}
|
|
|
|
func (contractSummary ContractSummary) GetStateAttribute(attributeName string) interface{} {
|
|
var result interface{}
|
|
result, _ = contractSummary.blockChain.GetAttribute(contractSummary.Contract, attributeName, contractSummary.BlockNumber)
|
|
return result
|
|
}
|
|
|
|
func newContractSummary(blockchain core.Blockchain, contract core.Contract, blockNumber *big.Int) ContractSummary {
|
|
attributes, _ := blockchain.GetAttributes(contract)
|
|
return ContractSummary{
|
|
Attributes: attributes,
|
|
BlockNumber: blockNumber,
|
|
Contract: contract,
|
|
ContractHash: contract.Hash,
|
|
LastTransaction: lastTransaction(contract),
|
|
NumberOfTransactions: len(contract.Transactions),
|
|
blockChain: blockchain,
|
|
}
|
|
}
|
|
|
|
func lastTransaction(contract core.Contract) *core.Transaction {
|
|
if len(contract.Transactions) > 0 {
|
|
return &contract.Transactions[0]
|
|
}
|
|
return nil
|
|
}
|