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balance.go
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balance.go
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package node
import (
"fmt"
"net/url"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/gorilla/mux"
"github.com/rocket-pool/node-manager-core/api/server"
"github.com/rocket-pool/node-manager-core/api/types"
"github.com/rocket-pool/smartnode/v2/shared/types/api"
)
// ===============
// === Factory ===
// ===============
type nodeBalanceContextFactory struct {
handler *NodeHandler
}
func (f *nodeBalanceContextFactory) Create(args url.Values) (*nodeBalanceContext, error) {
c := &nodeBalanceContext{
handler: f.handler,
}
return c, nil
}
func (f *nodeBalanceContextFactory) RegisterRoute(router *mux.Router) {
server.RegisterQuerylessGet[*nodeBalanceContext, api.NodeBalanceData](
router, "balance", f, f.handler.logger.Logger, f.handler.serviceProvider.ServiceProvider,
)
}
// ===============
// === Context ===
// ===============
type nodeBalanceContext struct {
handler *NodeHandler
}
func (c *nodeBalanceContext) PrepareData(data *api.NodeBalanceData, opts *bind.TransactOpts) (types.ResponseStatus, error) {
sp := c.handler.serviceProvider
ec := sp.GetEthClient()
ctx := c.handler.ctx
nodeAddress, _ := sp.GetWallet().GetAddress()
// Requirements
err := sp.RequireNodeAddress()
if err != nil {
return types.ResponseStatus_AddressNotPresent, err
}
err = sp.RequireEthClientSynced(ctx)
if err != nil {
return types.ResponseStatus_ClientsNotSynced, err
}
data.Balance, err = ec.BalanceAt(ctx, nodeAddress, nil)
if err != nil {
return types.ResponseStatus_Error, fmt.Errorf("error getting ETH balance of node %s: %w", nodeAddress.Hex(), err)
}
return types.ResponseStatus_Success, nil
}