get leaders.

client/utils.go

@@ -1,6 +1,13 @@
 package client
 
-import "github.com/simple-rules/harmony-benchmark/crypto/pki"
+import (
+	"bytes"
+	"io"
+	"log"
+	"net/http"
+
+	"github.com/simple-rules/harmony-benchmark/crypto/pki"
+)
 
 var AddressToIntPriKeyMap map[[20]byte]int // For convenience, we use int as the secret seed for generating private key
 
@@ -14,3 +21,18 @@ func LookUpIntPriKey(address [20]byte) (int, bool) {
 	value, ok := AddressToIntPriKeyMap[address]
 	return value, ok
 }
+
+func DownloadUrlAsString(url string) (string, error) {
+	response, err := http.Get(url)
+	buf := bytes.NewBufferString("")
+	if err != nil {
+		log.Fatal(err)
+	} else {
+		defer response.Body.Close()
+		_, err := io.Copy(buf, response.Body)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+	return buf.String(), err
+}

client/wallet/main.go

@@ -6,6 +6,14 @@ import (
 	"errors"
 	"flag"
 	"fmt"
+	"strings"
+
+	"io"
+	"io/ioutil"
+	math_rand "math/rand"
+	"os"
+	"strconv"
+	"time"
 
 	"github.com/dedis/kyber"
 	"github.com/simple-rules/harmony-benchmark/blockchain"
@@ -17,12 +25,6 @@ import (
 	"github.com/simple-rules/harmony-benchmark/p2p"
 	proto_node "github.com/simple-rules/harmony-benchmark/proto/node"
 	"github.com/simple-rules/harmony-benchmark/utils"
-	"io"
-	"io/ioutil"
-	math_rand "math/rand"
-	"os"
-	"strconv"
-	"time"
 )
 
 func main() {
@@ -218,6 +220,20 @@ func main() {
 	}
 }
 
+func getLeaders() []p2p.Peer {
+	str, _ := client.DownloadUrlAsString("https://s3-us-west-2.amazonaws.com/unique-bucket-bin/leaders.txt")
+	lines := strings.Split(str, "\n")
+	var leaders []p2p.Peer
+	for _, line := range lines {
+		if line == "" {
+			continue
+		}
+		parts := strings.Split(line, " ")
+		leaders = append(leaders, p2p.Peer{Ip: parts[0], Port: parts[1]})
+	}
+	return leaders
+}
+
 func CreateWalletServerNode() *node.Node {
 	configr := client_config.NewConfig()
 	configr.ReadConfigFile("local_config_shards.txt")