Try to use @aptos-labs/ts-sdk for getting view function from mainnet contract and got an Error

[wocaatm]

Discord user ID

chineseculture

Describe your question in detail.

import { Aptos, AptosConfig, Network } from "@aptos-labs/ts-sdk";

const config = new AptosConfig({ network: Network.MAINNET });
const aptos = new Aptos(config);

async function checkPoolExists() {
  try {
    const result = await aptos.view({
      payload: {
        function: '0x4bf51972879e3b95c4781a5cdcb9e1ee24ef483e7d22f2d903626f126df62bd1::liquidity_pool::liquidity_pool',
        functionArguments: [
          "0x01::aptos_coin::AptosCoin",
          "0x2ebb2ccac5e027a87fa0e2e5f656a3a4238d6a48d93ec9b610d570fc0aa0df12",
          "false"
        ],
      }
    })

    console.log('池子是否存在:', result)
    return result
  } catch (error) {
    console.error('检查池子时出错:', error)
    return false
  }
}

checkPoolExists()

{
  "name": "liquidity_pool",
  "visibility": "public",
  "is_entry": false,
  "is_view": true,
  "generic_type_params": [],
  "params": [
    "0x1::object::Object<0x1::fungible_asset::Metadata>",
    "0x1::object::Object<0x1::fungible_asset::Metadata>",
    "bool"
  ],
  "return": [
    "0x1::object::Object<0x4bf51972879e3b95c4781a5cdcb9e1ee24ef483e7d22f2d903626f126df62bd1::liquidity_pool::LiquidityPool>"
  ]
}

I tried to use the SDK's view to get apt and whether a certain token has a liquidity pool established. The above are my code and the contract's abi, but I got an error. The error is as follows. Is the parameter I passed in incorrect?

J [Error]: Hex characters are invalid: hex string expected, got non-hex character "1:" at index 40
    at Function.fromString (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/core/hex.ts:81:45)
    at Cc (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24)
    at qt (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24)
    at ai (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24)
    at /Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24
    at Array.map (<anonymous>)
    at /Users/maayansavir/work/aptos-ts-sdk/dist/common/index.js:1:1
    at /Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24
    at _optionalChain (/Users/maayansavir/work/aptos-ts-sdk/dist/common/index.js:1:1)
    at Uc (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24) {
  invalidReason: 'invalid_hex_chars'
}

What error, if any, are you getting?

J [Error]: Hex characters are invalid: hex string expected, got non-hex character "1:" at index 40
    at Function.fromString (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/core/hex.ts:81:45)
    at Cc (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24)
    at qt (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24)
    at ai (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24)
    at /Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24
    at Array.map (<anonymous>)
    at /Users/maayansavir/work/aptos-ts-sdk/dist/common/index.js:1:1
    at /Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24
    at _optionalChain (/Users/maayansavir/work/aptos-ts-sdk/dist/common/index.js:1:1)
    at Uc (/Users/journey/blockchain/aptos/bot/node_modules/@aptos-labs/ts-sdk/src/internal/account.ts:183:24) {
  invalidReason: 'invalid_hex_chars'
}

What have you tried or looked at? Or how can we reproduce the error?

No response

Which operating system are you using?

macOS

Which SDK or tool are you using? (if any)

TypeScript SDK

Describe your environment or tooling in detail

No response

[0xmaayan]

Hey @wocaatm , looking at the contract on the Explorer the first 2 arguments are of type Object which mean the input should be an address.

The AptosCoin FA address is 0xa, BUT because you are trying to use Cellana Finance contract, they use a different AptosCoin FA address which is 0xedc2704f2cef417a06d1756a04a16a9fa6faaed13af469be9cdfcac5a21a8e2e.

This should work:

payload: {
   function: '0x4bf51972879e3b95c4781a5cdcb9e1ee24ef483e7d22f2d903626f126df62bd1::liquidity_pool::liquidity_pool',
   functionArguments: [
      "0xedc2704f2cef417a06d1756a04a16a9fa6faaed13af469be9cdfcac5a21a8e2e",
      "0x2ebb2ccac5e027a87fa0e2e5f656a3a4238d6a48d93ec9b610d570fc0aa0df12",
      "false"
   ],
}