estimateenergy

How to use it

// yarn add @tatumio/tatum

import { TatumSDK, Tron, Network } from '@tatumio/tatum'

const tatum = await TatumSDK.init<Tron>({network: Network.TRON})

const res = await tatum.rpc.estimateEnergy(
  'TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g', 
  'TG3XXyExBkPp9nzdajDZsozEu4BkaSJozs', 
  'balanceOf(address)', 
  '000000000000000000000000a614f803b6fd780986a42c78ec9c7f77e6ded13c',
  { visible: true }
)

await tatum.destroy() // Destroy Tatum SDK - needed for stopping background jobs

Overview

The estimateEnergy method is used to estimate the energy required for the successful execution of smart contract transactions on the TRON blockchain. It can be used to get a more accurate estimation of the energy consumption for executing certain special contracts compared to the existing wallet/triggerconstantcontract API.

This method does not generate an on-chain transaction, nor does it change the status of the current node. The energy_required field in the returned value is the estimated energy amount.

Parameters

• ownerAddress (string): The owner address that triggers the contract. If visible=true, use base58check format, otherwise use hex format. For a constant call, you can use the all-zero address.
• contractAddress (string): The smart contract address. If visible=true, use base58check format, otherwise use hex format.
• functionSelector (string): The function call. It must not be left blank.
• parameter (string): The parameter encoding needs to be in accordance with the ABI rules.
• options (object, optional): This is an optional parameter that can include:
  • visible (boolean, optional): Specifies whether the address is in base58 format.

Return Object

• result: object - The run result.
  • result - Indicates if the estimate is successful.
  • code - The response code.
  • message - The result message.
• energy_required - The estimated energy to run the contract.

HTTP Request Example

{
  "owner_address": "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g",
  "contract_address": "TG3XXyExBkPp9nzdajDZsozEu4BkaSJozs",
  "function_selector": "balanceOf(address)",
  "parameter": "000000000000000000000000a614f803b6fd780986a42c78ec9c7f77e6ded13c",
  "visible": true
}

HTTP Response Example

{
  "result": {
    "result": true
  },
  "energy_required": 1082
}