Not able to read the updated value in a Solana Data Account

Question

I have a simple solana greeting-counter program, I have it deployed locally. When I am calling from my typescript code I am able to do pretty much all the transactions and verify them. Except the last one, where I am seeing the block explorer is showing the transaction went through it's a success, however when I try to read the data I am seeing the state has not been updated. I am using anchor 0.30.0

Here is the Solana App Code:

use anchor_lang::prelude::*;

declare_id!("8VEC1cycS5ry9aM5CBRWtxfVQBfNtWANTXXrXXmk2TXw");


#[program]
pub mod hello_please {
    use super::*;
    pub fn create_greeting(ctx: Context<CreateGreeting>) -> Result<()> {
        let greeting_account = &mut ctx.accounts.greeting_account;
        greeting_account.counter = 0;
        Ok(())
    }

    pub fn increment_greeting(ctx: Context<IncrementGreeting>) -> Result<()> {
        let greeting_account = &mut ctx.accounts.greeting_account;
        greeting_account.counter += 1;
        Ok(())
    }
}

#[derive(Accounts)]
pub struct CreateGreeting<'info> {
    #[account(init, payer = user, space = 8 + 8)]
    pub greeting_account: Account<'info, GreetingAccount>,
    #[account(mut)]
    pub user: Signer<'info>,
    pub system_program: Program<'info, System>,
}

#[derive(Accounts)]
pub struct IncrementGreeting<'info> {
    #[account(mut)]
    pub greeting_account: Account<'info, GreetingAccount>,
}

#[account]
pub struct GreetingAccount {
    pub counter: u64,
}

Here is the Typescript code :

interface GreetingAccount {
  counter: anchor.BN
}

async function main() {
// Everything has been initialized

  const txSignature = await program.methods
      .incrementGreeting()
      .accounts({
          greetingAccount: greetingAccount.publicKey,
      })
      .signers([providerAccount])
      .rpc();

  const latestBlockHash = await connection.getLatestBlockhash();

  await connection.confirmTransaction({
      blockhash: latestBlockHash.blockhash,
      lastValidBlockHeight: latestBlockHash.lastValidBlockHeight,
      signature: txSignature,
    }, 'finalized');

  const accountInfo = await connection.getAccountInfo(greetingAccount.publicKey);
  if (accountInfo === null) {
      throw new Error("Error: Account not found");
  }

  const GreetingAccountSchema = borsh.struct<GreetingAccount>([borsh.u64("counter"),]);

  const {counter} = GreetingAccountSchema.decode(accountInfo?.data, "processed");

  console.log("decoded counter: "+counter.toNumber()+"\n");
}();

My console.log is showing 0 but the explorer shows it as 1 when I use msg! macro

Answer 1

Instead of manually deserializing the account data, try:

    const account = await program.account.greetingAccount.fetch(
      greetingAccount.publicKey
    )

Anchor can automatically deserialize the account data for you using the program IDL.