mirror of
https://github.com/wealdtech/ethdo.git
synced 2026-04-22 03:00:10 -04:00
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
// Copyright © 2020 Weald Technology Trading
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"context"
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"fmt"
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eth2client "github.com/attestantio/go-eth2-client"
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"github.com/pkg/errors"
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)
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// networks is a map of deposit contract addresses to networks.
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var networks = map[string]string{
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"00000000219ab540356cbb839cbe05303d7705fa": "Mainnet",
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"07b39f4fde4a38bace212b546dac87c58dfe3fdc": "Medalla",
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"8c5fecdc472e27bc447696f431e425d02dd46a8c": "Pyrmont",
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"ff50ed3d0ec03ac01d4c79aad74928bff48a7b2b": "Prater",
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"6f22ffbc56eff051aecf839396dd1ed9ad6bba9d": "Ropsten",
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}
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// Network returns the name of the network., calculated from the deposit contract information.
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// If not known, returns "Unknown".
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func Network(ctx context.Context, eth2Client eth2client.Service) (string, error) {
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var address []byte
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if eth2Client == nil {
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return "", errors.New("no Ethereum 2 client supplied")
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}
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provider, isProvider := eth2Client.(eth2client.SpecProvider)
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if !isProvider {
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return "", errors.New("client does not provide deposit contract address")
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}
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config, err := provider.Spec(ctx)
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if err != nil {
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return "", errors.Wrap(err, "failed to obtain chain specification")
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}
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if config == nil {
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return "", errors.New("failed to return chain specification")
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}
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depositContractAddress, exists := config["DEPOSIT_CONTRACT_ADDRESS"]
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if exists {
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address = depositContractAddress.([]byte)
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}
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return network(address), nil
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}
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// network returns a network given an Ethereum 1 contract address.
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func network(address []byte) string {
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if network, exists := networks[fmt.Sprintf("%x", address)]; exists {
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return network
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}
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return "Unknown"
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}
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