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Apr 28, 2021
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account api pro #19

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37 changes: 28 additions & 9 deletions proxy/proxy.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,13 @@ import (
"github.com/coinbase/rosetta-sdk-go/types"
"github.com/onrik/ethrpc"
"log"
"math/big"
"sync"
)

type Proxy struct {
c *ethrpc.EthRPC
c *ethrpc.EthRPC
wg sync.WaitGroup
}

func New(url string) *Proxy {
Expand All @@ -20,7 +23,7 @@ func New(url string) *Proxy {
log.Fatal(err)
}
fmt.Println(version)
return &Proxy{client}
return &Proxy{c: client}
}

// Needed if the client needs to perform some action before connecting
Expand All @@ -41,15 +44,31 @@ func (oc *Proxy) Ready() error {
// Balances fetches the balance of the given address
// if height is not nil, then the balance will be displayed
// at the provided height, otherwise last block balance will be returned
func (oc *Proxy) Balances(ctx context.Context, addr string, height *int64) (*types.AccountBalanceResponse, error) {
balance, e := oc.c.EthGetBalance(addr, "latest")
if e != nil {
return &types.AccountBalanceResponse{}, e
func (oc *Proxy) Balances(ctx context.Context, addr string, height *int64) (res *types.AccountBalanceResponse, err error) {
var (
r *types.BlockResponse
e1, e2 error
balance big.Int
)
oc.wg.Add(2)
go func() {
defer oc.wg.Done()
balance, e1 = oc.c.EthGetBalance(addr, "latest")
}()

go func() {
defer oc.wg.Done()
r, e2 = oc.CurrentBlock(ctx)
}()

oc.wg.Wait()

if e1 != nil {
return &types.AccountBalanceResponse{}, e1
}

r, e := oc.CurrentBlock(ctx)
if e != nil {
return &types.AccountBalanceResponse{}, e
if e2 != nil {
return &types.AccountBalanceResponse{}, e2
}

fmt.Printf("account : %s, balance : %s, index : %v, hash : %s\n", addr, balance.String(), r.Block.BlockIdentifier.Index, r.Block.BlockIdentifier.Hash)
Expand Down