77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
package geth
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import (
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"math/big"
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"log"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/ethclient"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/geth/node"
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"golang.org/x/net/context"
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)
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type Blockchain struct {
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client *ethclient.Client
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readGethHeaders chan *types.Header
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outputBlocks chan core.Block
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newHeadSubscription ethereum.Subscription
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node core.Node
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}
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func NewBlockchain(ipcPath string) *Blockchain {
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blockchain := Blockchain{}
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rpcClient, err := rpc.Dial(ipcPath)
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if err != nil {
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log.Fatal(err)
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}
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client := ethclient.NewClient(rpcClient)
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clientWrapper := node.ClientWrapper{ContextCaller: rpcClient, IPCPath: ipcPath}
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blockchain.node = node.MakeNode(clientWrapper)
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blockchain.client = client
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return &blockchain
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}
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func (blockchain *Blockchain) GetLogs(contract core.Contract, startingBlockNumber *big.Int, endingBlockNumber *big.Int) ([]core.Log, error) {
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if endingBlockNumber == nil {
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endingBlockNumber = startingBlockNumber
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}
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contractAddress := common.HexToAddress(contract.Hash)
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fc := ethereum.FilterQuery{
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FromBlock: startingBlockNumber,
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ToBlock: endingBlockNumber,
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Addresses: []common.Address{contractAddress},
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}
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gethLogs, err := blockchain.client.FilterLogs(context.Background(), fc)
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if err != nil {
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return []core.Log{}, err
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}
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logs := ToCoreLogs(gethLogs)
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return logs, nil
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}
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func (blockchain *Blockchain) Node() core.Node {
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return blockchain.node
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}
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func (blockchain *Blockchain) GetBlockByNumber(blockNumber int64) (core.Block, error) {
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gethBlock, err := blockchain.client.BlockByNumber(context.Background(), big.NewInt(blockNumber))
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if err != nil {
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return core.Block{}, err
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}
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block, err := ToCoreBlock(gethBlock, blockchain.client)
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if err != nil {
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return core.Block{}, err
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}
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return block, nil
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}
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func (blockchain *Blockchain) LastBlock() *big.Int {
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block, _ := blockchain.client.HeaderByNumber(context.Background(), nil)
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return block.Number
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}
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