Update generate_balances script to accept file path instead of URL

README.md

@@ -202,12 +202,11 @@ rosetta-cli check:data --configuration-file $PATH_TO_ROSETTA/rosetta-cli-conf/$N
 
 ### How to generate `bootstrap_balances.json`
 
-This is only necessary for running the data checks if it has not already been created for the particular network. Here's how to generate this for alfajores (for another network, specify the appropriate genesis block URL and output path):
+This is only necessary for running the data checks if it has not already been created for the particular network. Here's how to generate this for alfajores (for another network, specify the appropriate genesis block filepath and output path):
 
 ```sh
 go run examples/generate_balances/main.go \
-  https://storage.googleapis.com/genesis_blocks/alfajores \
-  rosetta-cli-conf/testnet/bootstrap_balances.json
+  $PATH_TO_GENESIS_FILE rosetta-cli-conf/mycelo/bootstrap_balances.json
 ```
 
 ### Running Rosetta with a mycelo testnet

examples/generate_balances/main.go

@@ -17,9 +17,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"log"
-	"net/http"
 	"os"
 
 	"github.com/celo-org/celo-blockchain/core"
@@ -34,26 +32,20 @@ type BootstrapBalance struct {
 
 func main() {
 	if len(os.Args) != 3 {
-		fmt.Println("Usage: generate_balances <genesisURL> <outputFile>")
+		fmt.Println("Usage: generate_balances <pathToGenesis> <outputFile>")
 		os.Exit(1)
 	}
-	genesisURL := os.Args[1]
+	genesisPath := os.Args[1]
 	bootstrapBalancesFile := os.Args[2]
-	// Get Genesis File
-	resp, err := http.Get(genesisURL)
-	if err != nil {
-		log.Fatalln(err)
-	}
-	defer resp.Body.Close()
-	body, err := ioutil.ReadAll(resp.Body)
+	data, err := os.ReadFile(genesisPath)
 	if err != nil {
 		log.Fatalln(err)
 	}
 	genesis := &core.Genesis{}
-	if err := json.Unmarshal(body, genesis); err != nil {
+	if err := json.Unmarshal(data, genesis); err != nil {
 		log.Fatalln(err)
 	}
-	log.Printf("%+v\n", genesis.Alloc)
+	log.Println("Loaded genesis file, writing allocation file")
 	// Write to file
 	balances := []*BootstrapBalance{}
 	for k, v := range genesis.Alloc {
@@ -76,7 +68,7 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	if err := ioutil.WriteFile(bootstrapBalancesFile, file, os.FileMode(0600)); err != nil {
+	if err := os.WriteFile(bootstrapBalancesFile, file, os.FileMode(0600)); err != nil {
 		log.Fatal(err)
 	}
 	log.Printf("Bootstrap file contains %d balances\n", len(balances))