forked from cerc-io/ipld-eth-server
137 lines
3.3 KiB
Go
137 lines
3.3 KiB
Go
// VulcanizeDB
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// Copyright © 2018 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package utils
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import (
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"io"
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"math/big"
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"os"
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"path/filepath"
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"strings"
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"syscall"
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"github.com/mitchellh/go-homedir"
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log "github.com/sirupsen/logrus"
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"github.com/vulcanize/vulcanizedb/pkg/config"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/geth"
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)
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func LoadPostgres(database config.Database, node core.Node) postgres.DB {
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db, err := postgres.NewDB(database, node)
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if err != nil {
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log.Fatalf("Error loading postgres\n%v", err)
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}
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return *db
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}
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func ReadAbiFile(abiFilepath string) string {
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abiFilepath = AbsFilePath(abiFilepath)
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abi, err := geth.ReadAbiFile(abiFilepath)
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if err != nil {
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log.Fatalf("Error reading ABI file at \"%s\"\n %v", abiFilepath, err)
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}
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return abi
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}
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func AbsFilePath(filePath string) string {
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if !filepath.IsAbs(filePath) {
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cwd, _ := os.Getwd()
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filePath = filepath.Join(cwd, filePath)
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}
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return filePath
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}
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func GetAbi(abiFilepath string, contractHash string, network string) string {
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var contractAbiString string
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if abiFilepath != "" {
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contractAbiString = ReadAbiFile(abiFilepath)
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} else {
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url := geth.GenURL(network)
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etherscan := geth.NewEtherScanClient(url)
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log.Printf("No ABI supplied. Retrieving ABI from Etherscan: %s", url)
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contractAbiString, _ = etherscan.GetAbi(contractHash)
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}
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_, err := geth.ParseAbi(contractAbiString)
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if err != nil {
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log.Fatalln("Invalid ABI")
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}
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return contractAbiString
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}
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func RequestedBlockNumber(blockNumber *int64) *big.Int {
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var _blockNumber *big.Int
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if *blockNumber == -1 {
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_blockNumber = nil
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} else {
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_blockNumber = big.NewInt(*blockNumber)
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}
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return _blockNumber
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}
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func CleanPath(str string) (string, error) {
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path, err := homedir.Expand(filepath.Clean(str))
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if err != nil {
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return "", err
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}
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if strings.Contains(path, "$GOPATH") {
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env := os.Getenv("GOPATH")
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spl := strings.Split(path, "$GOPATH")[1]
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path = filepath.Join(env, spl)
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}
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return path, nil
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}
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func ClearFiles(files ...string) error {
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for _, file := range files {
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if _, err := os.Stat(file); err == nil {
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err = os.Remove(file)
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if err != nil {
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return err
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}
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} else if os.IsNotExist(err) {
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// fall through
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} else {
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return err
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}
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}
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return nil
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}
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func CopyFile(src, dst string) error {
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in, err := os.Open(src)
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if err != nil {
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return err
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}
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defer in.Close()
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out, err := os.OpenFile(dst, syscall.O_CREAT|syscall.O_EXCL|os.O_WRONLY, os.FileMode(0666)) // Doesn't overwrite files
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if err != nil {
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return err
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}
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defer out.Close()
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_, err = io.Copy(out, in)
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if err != nil {
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return err
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}
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return out.Close()
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}
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