Publisher Class

The Publisher is a core component within the Hashgraph DID SDK. It streamlines interactions with the distributed ledger by providing a standardized way to submit, execute, and pay for transactions. This ensures that DID-related operations are reliably processed and recorded on the network. The Publisher interface promotes interoperability and simplifies the development of DID applications, abstracting away the complexities of direct ledger interactions.

Features

  • Transaction Submission: Submits transactions to the Hedera network for DID operations.

  • Transaction Execution: Executes transactions on the Hedera network, ensuring reliable processing.

  • Network Interaction: Provides a streamlined interface for interacting with the Hedera network.

  • Network Detection: Automatically detects the Hedera network environment (mainnet, testnet).

  • Error Handling: Includes robust error handling for transaction failures and network issues.

  • Extensibility: Designed for extensibility to support future Hedera network features.

  • TypeScript Support: Built with TypeScript to enhance developer experience and type safety.

Using the Publisher

Submitting a Transaction

This example demonstrates how to submit a simple transaction using the Publisher:

import { Publisher } from "@hashgraph-did-js-sdk/publisher-internal";
import { Client, PrivateKey, TransferTransaction } from "@hashgraph/sdk";

async function main() {
  // Configure the Hedera client
  const client = Client.forTestnet();
  const privateKey = PrivateKey.fromString("your-private-key-here");
  client.setOperator("your-account-id-here", privateKey);

  // Create a new Publisher instance
  const publisher = new Publisher(client);

  // Create a simple transfer transaction (replace with your actual transaction)
  const transaction = new TransferTransaction()
    .addHbarTransfer("your-account-id-here", -1) // Sending 1 HBAR
    .addHbarTransfer("0.0.3", 1); // To account 0.0.3

  // Submit the transaction
  try {
    const receipt = await publisher.publish(transaction);
    console.log(`Transaction Receipt: ${JSON.stringify(receipt, null, 2)}`);
  } catch (error) {
    console.error("Error submitting transaction:", error);
  }
}

main();

References