ExecuteScriptAtLatestBlock Access API Method

Parameters

Script

string

REQUIRED

The Base64 encoded content of the Cadence script

Arguments

string

REQUIRED

A list of arguments each encoded as Base64 passed in the JSON-Cadence interchange format

Returns

value

string

The result of the executed Cadence script

Request

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"strconv"

	"github.com/onflow/flow/protobuf/go/flow/access"
)


func main() {

	// Requires authenticating before making the request. Refer to Intro Page on how Authentication can be done.
	client, err := getAccessClientWithBasicAuth("ENDPOINT-NAME", "TOKEN_GOES_HERE")
	ctx := context.Background()
	if err != nil {
		log.Fatalf("err: %v", err)
	}

	// Execute Script at Latest Block
	script := []byte(`
		pub fun main(a: Int): Int {
			return a + 10
		}
	`)

	// Convert integer to JSON-CDC (Cadence JSON)
	arg := 10
	// JSON-CDC representation of an integer is a JSON object with "type" and "value" fields
	jsonCDC := fmt.Sprintf(`{"type":"Int","value":"%s"}`, strconv.Itoa(arg))

	// Create script arguments
	args := [][]byte{[]byte(jsonCDC)}

	req := &access.ExecuteScriptAtLatestBlockRequest{
		Script:    script,
		Arguments: args,
	}

	valueResp, err := client.ExecuteScriptAtLatestBlock(ctx, req)
	respJSON, err := json.Marshal(valueResp)
	if err != nil {
		log.Fatal("err: ", err)
	}
	fmt.Println("ExecuteScriptAtLatestBlock response:", string(respJSON))

}

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