status-go/rpc/verif_proxy.go

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2022-10-31 15:52:21 +00:00
//go:build nimbus_light_client
// +build nimbus_light_client
package rpc
import (
"context"
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/log"
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gethrpc "github.com/ethereum/go-ethereum/rpc"
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proxy "github.com/siphiuel/lc-proxy-wrapper"
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"github.com/status-im/status-go/params"
)
type VerifProxy struct {
config *proxy.Config
client *gethrpc.Client
log log.Logger
}
func init() {
verifProxyInitFn = func(c *Client) {
ctx := context.Background()
var testConfig = proxy.Config{
Eth2Network: "mainnet",
TrustedBlockRoot: "0xc5182cdb750fe088138b0d475683cda26a96befc24de16fb17bcf49d9cadf2f7",
Web3Url: c.upstreamURL,
RpcAddress: "127.0.0.1",
RpcPort: 8545,
LogLevel: "INFO",
}
proxy.StartLightClient(ctx, &testConfig)
verifProxy, err := newVerifProxy(&testConfig, c.log)
if err != nil {
c.RegisterHandler(
params.BalanceMethodName,
func(ctx context.Context, v uint64, params ...interface{}) (interface{}, error) {
addr := params[0].(common.Address)
return verifProxy.GetBalance(ctx, addr)
},
)
}
}
}
func newVerifProxy(cfg *proxy.Config, log log.Logger) (*VerifProxy, error) {
endpoint := "http://" + cfg.RpcAddress + ":" + fmt.Sprint(cfg.RpcPort)
client, err := gethrpc.DialHTTP(endpoint)
if err != nil {
log.Error("Error when creating VerifProxy client", err)
return nil, err
}
proxy := &VerifProxy{cfg, client, log}
return proxy, nil
}
func (p *VerifProxy) GetBalance(ctx context.Context, address common.Address) (interface{}, error) {
var result hexutil.Big
err := p.client.CallContext(ctx, &result, "eth_getBalance", address, "latest")
if err != nil {
p.log.Error("Error when invoking GetBalance", err)
return nil, err
}
return result, nil
}