@golem-sdk/react

Golem React SDK

A collection of React hooks for interacting with the Golem Network.

Installation

Get started by installing the core package and it's peer dependencies:

npm install @golem-sdk/react @golem-sdk/task-executor@2 @golem-sdk/golem-js@3

Then make sure to wrap your app with the YagnaProvider component:

<YagnaProvider>
  <App />
</YagnaProvider>

Initial Configuration

For the SDK to work properly you need to have a running Yagna instance on your local machine. Please follow the Yagna installation guide to install and configure Yagna.

Yagna blocks all requests from external origins by default. To allow the SDK to communicate with it you need start Yagna with --api-allow-origin='<your-domain>' flag. For example:

yagna service run --api-allow-origin='http://localhost:3000'

Demo application

Sometimes it's easier to learn by example. That's why we've created a demo application that uses all the hooks from the SDK. You can find it in the examples/react-with-vite directory. To run it locally, first clone the repository, install it's dependencies and build the react package:

git clone https://github.com/golemfactory/golem-sdk-react.git
cd golem-sdk-react/
npm install
npm run build

Then run the following command to start the demo application:

npm run example:vite

If you just want to see how the demo application looks like, you can check out the live version here.

Features

useYagna - check if you're connected to Yagna and manage the app-key

function MyComponent() {
  const { isConnected, appKey, setYagnaOptions } = useYagna();
  const inputRef = useRef(null);
  return (
    <div>
      <div>Connected to Yagna: {isConnected ? "yes" : "no"}</div>
      <input ref={inputRef} />
      <button
        onClick={() => setYagnaOptions({ apiKey: inputRef.current.value })}
      >
        Set app key
      </button>
    </div>
  );
}

useExecutor + useTask - run a task on the Golem Network

function MyTask({ executor }) {
  const { isRunning, error, result, run } = useTask(executor);
  const onClick = () =>
    run(async (exe) => {
      return (await exe.run("echo", ["Hello world!"])).stdout;
    });
  return (
    <div>
      <button onClick={onClick} disabled={isRunning}>
        Run task
      </button>
      {isRunning && <div>Task is running...</div>}
      {error && <div>Task failed due to {error.toString()}</div>}
      {result && <div>Task result: {result}</div>}
    </div>
  );
}

function MyComponent() {
  const {
    executor,
    initialize,
    isInitialized,
    isInitializing,
    terminate,
    error,
  } = useExecutor({
    demand: {
      workload: { imageTag: "golem/alpine:latest" },
    },
    market: {
      rentHours: 0.5,
      pricing: {
        model: "linear",
        maxStartPrice: 0.5,
        maxCpuPerHourPrice: 1.0,
        maxEnvPerHourPrice: 0.5,
      },
    },
  });
  if (isInitializing) {
    return <div>Initializing executor...</div>;
  }
  if (error) {
    return <div>Error: {error.toString()}</div>;
  }
  if (!isInitialized) {
    return (
      <div>
        <button onClick={initialize}>Initialize executor</button>
      </div>
    );
  }
  return (
    <div>
      <MyTask executor={executor} />
      <button onClick={terminate}>Terminate executor</button>
    </div>
  );
}

useInvoices + useHandleInvoice - list and handle invoices

function Invoice({ invoiceId }) {
  const { acceptInvoice } = useHandleInvoice(invoiceId);

  return (
    <li key={invoice.invoiceId}>
      {invoice.invoiceId} - {invoice.status}
      <button onClick={acceptInvoice} disabled={invoice.status !== "RECEIVED"}>
        Accept
      </button>
    </li>
  );
}

function MyComponent() {
  const { invoices, isLoading, error, refetch } = useInvoices({
    limit: 10,
    statuses: ["RECEIVED"],
    after: new Date("2021-01-01"),
  });
  if (isLoading) {
    return <div>Loading...</div>;
  }
  if (error) {
    return <div>Error: {error.toString()}</div>;
  }
  return (
    <div>
      <ul>
        {invoices.map((invoice) => (
          <Invoice key={invoice.invoiceId} invoiceId={invoice.invoiceId} />
        ))}
      </ul>
      <button onClick={refetch}> Refresh </button>
    </div>
  );
}

Developing

If you want to contribute to the SDK, you can clone the repository and install the dependencies:

git clone https://github.com/golemfactory/golem-sdk-react.git
cd golem-sdk-react/
npm install

Links

• Golem documentation: https://docs.golem.network/
• Repository: https://github.com/golemfactory/golem-sdk-react/
• Issue tracker: https://github.com/golemfactory/golem-sdk-react/issues
  • In case of sensitive bugs like security vulnerabilities, please contact [e-mail] directly instead of using issue tracker. We value your effort to improve the security and privacy of this project!
• Related projects:
  • Golem JavaScript API: https://github.com/golemfactory/golem-js/

Licensing

The code in this project is licensed under GPL-3.0 license.