I've run into some error while trying to perform near-api-js viewFunction. I've made a script to check for storage balance of an accountId parse from the API body. When i receive the accountId parse from the API i parse into this ftGetStorageBalance function, from there the args: { account_id: accountId } is parse to accountViewFunction.
Here are the functions:
async ftGetStorageBalance(
tokenId: string,
accountId: string,
): Promise<FTStorageBalance | null> {
try {
const config = await this.getDefaultConfig();
const connection = await this.getConnect(config);
const account = await this.getAccount(this.nearCfg.accountId, connection);
return this.accountViewFunction(
{
methodName: 'storage_balance_of',
args: { account_id: accountId },
},
account,
tokenId,
);
} catch (e) {
throw new Error(e);
}
}
Here is the function when the error hits:
async accountViewFunction(
{ methodName, args }: ViewFunctionOptions,
account: nearAPI.Account,
contractId: string,
): Promise<any> {
// retrieve account_id from args
//access the first key in the args
// const key = Object.keys(args)[0];
// retrieve the value of the key
// const accountId = args[key];
// const jsonArgs = { account_id: accountId };
// const test = `{ "account_id" : "${accountId}" }`;
// const jsontest = JSON.parse(test);
// console.log(jsontest);
// const bufferArgs = Buffer.from(JSON.stringify(jsonArgs));
return account.viewFunction(contractId, methodName, args);
}
I've tried console.log the args and here's what i get:
{ account_id: 'phuocsrp3.testnet' }
In the near-api-js library, it said that the args should be wrapped in JSON.
* Invoke a contract view function using the RPC API.
* @see {@link https://docs.near.org/docs/develop/front-end/rpc#call-a-contract-function}
*
* @param contractId NEAR account where the contract is deployed
* @param methodName The view-only method (no state mutations) name on the contract as it is written in the contract code
* @param args Any arguments to the view contract method, wrapped in JSON
* @param options.parse Parse the result of the call. Receives a Buffer (bytes array) and converts it to any object. By default result will be treated as json.
* @param options.stringify Convert input arguments into a bytes array. By default the input is treated as a JSON.
* @returns {Promise<any>}
*/
viewFunction(contractId: string, methodName: string, args?: any, { parse, stringify }?: {
parse?: typeof parseJsonFromRawResponse;
stringify?: typeof bytesJsonStringify;
}): Promise<any>;
So i've tried parse into the accountViewFunction the json format with JSON.stringify(jsonArgs) stuff in the above script or even the Buffer.from(JSON.stringify(jsonArgs)) but it runs into the error stacks:
TypedError: [-32700] Parse error: Failed parsing args: missing field account_id
at /Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/near-api-js/lib/providers/json-rpc-provider.js:329:31
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at Object.exponentialBackoff [as default] (/Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/near-api-js/lib/utils/exponential-backoff.js:7:24)
at JsonRpcProvider.sendJsonRpc (/Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/near-api-js/lib/providers/json-rpc-provider.js:304:26)
at JsonRpcProvider.query (/Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/near-api-js/lib/providers/json-rpc-provider.js:116:22)
at Account.viewFunction (/Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/near-api-js/lib/account.js:366:24)
at NearUtilsService.singleCheckStorageAndSendToken (/Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/src/application/near/utils/near.utils.service.ts:478:28)
at NearController.testsend (/Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/src/application/near/near.controller.ts:58:20)
at /Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/@nestjs/core/router/router-execution-context.js:46:28
at /Users/phuocha/Documents/phuoc_dev/work/starpunk-crosschain-starpad/node_modules/@nestjs/core/router/router-proxy.js:9:17 {
type: 'UntypedError',
context: undefined
}
The above functions works well in Powershell but somehow it fails in macos environment.
Here is info about my env: Nodejs version: 14.18.3 Near-api-js: 0.44.2 Nestjs: 8.0.0
The above scripts I've taken a reference from: https://github.com/ref-finance/ref-ui/blob/main/src/services/near.ts
Please help!
We debugged this in office hours, the error was arising from using an undefined value in the contractId variable.