set nodeurl with env var

minigeth/main.go

@@ -37,6 +37,12 @@ func main() {
 		defer pprof.StopCPUProfile()
 	}
 
+	newNodeUrl, setNewNodeUrl := os.LookupEnv("NODE")
+	if setNewNodeUrl {
+		fmt.Println("override node url", newNodeUrl)
+		oracle.SetNodeUrl(newNodeUrl)
+	}
+
 	// non mips
 	if len(os.Args) > 1 {
 		pkw := oracle.PreimageKeyValueWriter{}

minigeth/oracle/embedded_mips.go

@@ -95,6 +95,7 @@ func Preimage(hash common.Hash) []byte {
 }
 
 // these are stubs in embedded world
+func SetNodeUrl(newNodeUrl string)                                                        {}
 func SetRoot(newRoot string)                                                              {}
 func PrefetchStorage(*big.Int, common.Address, common.Hash, func(map[common.Hash][]byte)) {}
 func PrefetchAccount(*big.Int, common.Address, func(map[common.Hash][]byte))              {}

minigeth/oracle/prefetch.go

@@ -79,9 +79,12 @@ type Account struct {
 	CodeHash []byte
 }
 
-//var nodeUrl = "http://192.168.1.213:8545"
 var nodeUrl = "https://mainnet.infura.io/v3/9aa3d95b3bc440fa88ea12eaa4456161"
 
+func SetNodeUrl(newNodeUrl string) {
+	nodeUrl = newNodeUrl
+}
+
 func toFilename(key string) string {
 	return fmt.Sprintf("%s/json_%s", root, key)
 }