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sync-rpc

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sync-rpc

Run asynchronous commands synchronously by putting them in a separate process

  • 1.3.6
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What is sync-rpc?

The sync-rpc npm package allows for synchronous remote procedure calls (RPC) in Node.js. It enables the execution of functions in a separate process and returns the result synchronously, which can be useful for certain use cases where asynchronous behavior is not desired.

What are sync-rpc's main functionalities?

Synchronous RPC Call

This feature allows you to make synchronous RPC calls to a worker script. In this example, the worker script (worker.js) contains a function to add two numbers. The main script calls this function synchronously and logs the result.

const syncRpc = require('sync-rpc');
const rpc = syncRpc(__dirname + '/worker.js');
const result = rpc({ method: 'add', params: [1, 2] });
console.log(result); // Outputs: 3

Handling Multiple RPC Methods

This feature demonstrates how to handle multiple RPC methods within the worker script. The main script can call different methods (e.g., 'add' and 'subtract') and receive the results synchronously.

const syncRpc = require('sync-rpc');
const rpc = syncRpc(__dirname + '/worker.js');
const addResult = rpc({ method: 'add', params: [1, 2] });
const subtractResult = rpc({ method: 'subtract', params: [5, 3] });
console.log(addResult); // Outputs: 3
console.log(subtractResult); // Outputs: 2

Error Handling in RPC

This feature shows how to handle errors in synchronous RPC calls. If the worker script throws an error (e.g., division by zero), the main script can catch and handle the error appropriately.

const syncRpc = require('sync-rpc');
const rpc = syncRpc(__dirname + '/worker.js');
try {
  const result = rpc({ method: 'divide', params: [1, 0] });
  console.log(result);
} catch (error) {
  console.error('Error:', error.message);
}

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Package last updated on 24 Jul 2019

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