docs/content/tutorials/react-get-use-data-set.md

---
title: Get & Use a Data Set
description: Tutorial to get and use a data set in a basic React app.
---

## Requirements

This is a continuation of the React App Tutorial. Make sure you already did the [React App Setup](/tutorials/react-setup/) and the [Publish a Data Set](/tutorials/react-publish-data-set/) steps.

Open `src/App.js` in your marketplace app.

## Retrieve Assets

In the previous tutorial we added asset publishing. We can now search for published assets for consumption. Just after the `submitAsset()` function we can add a new function that will handle search:

```js
async retrieveAssets() {
  this.dbAssets = await this.ocean.assets.search("10 Monkey Species Small")
  console.log(this.dbAssets)
}
```

The last thing we need is a button to start our search inside the render function just after `<button onClick={() => this.submitAsset()}>Register asset</button>`:

```jsx
<button onClick={() => this.retrieveAssets()}>Retrieve assets</button>
```

## Consume Assets

The retrieved assets can now be consumed so in this tutorial we consume the first one. The following code goes after the `async retrieveAssets()` function.

```js
async consumeAsset() {
  // get all accounts
  const accounts = await this.ocean.accounts.list()
  // get first asset
  const consumeAsset = this.dbAssets[0]
  // get service we want to execute
  const service = consumeAsset.findServiceByType('Access')
  // order service agreement
  const agreement = await this.ocean.assets.order(
      consumeAsset.id,
      service.serviceDefinitionId,
      accounts[0]
  )
  // consume it
  await this.ocean.assets.consume(
      agreement,
      consumeAsset.id,
      service.serviceDefinitionId,
      accounts[0],
      ''
  )
}
```

We still need a button to start consumption. In the render function, just after the `<button onClick={()=>this.retrieveAssets()}>Retrieve assets</button>` line, add:

```jsx
<button onClick={() => this.consumeAsset()}>Consume asset</button>
```

With all these buttons in place, you should see this:

![React App 05](images/react-app-05.png)

Tip: Before clicking the `Retrieve assets` button, it might help to reload the page.

Go ahead and click the `Retrieve assets` button, and then the `Consume asset` button. Approve all the MetaMask dialog boxes.

If you have no errors in your `console.log` and can see your asset files listed, you have a working marketplace.

## Final Result

Here is the full source of `src/App.js` that you should have if you followed this tutorial:

```jsx
import React, { Component } from 'react'
import './App.css'
import { Ocean } from '@oceanprotocol/squid'
import * as Web3 from 'web3'

const web3 = new Web3(window.web3.currentProvider)
window.ethereum.enable()

const asset = {
  base: {
    name: '10 Monkey Species Small',
    dateCreated: '2012-02-01T10:55:11Z',
    author: 'Mario',
    license: 'CC0: Public Domain',
    contentType: 'jpg/txt',
    price: 10,
    files: [
      {
        checksum: '2bf9d229d110d1976cdf85e9f3256c7f',
        checksumType: 'MD5',
        contentLength: 12057507,
        url:
          'https://s3.amazonaws.com/datacommons-seeding-us-east/10_Monkey_Species_Small/assets/training.zip'
      },
      {
        checksum: '354d19c0733c47ef3a6cce5b633116b0',
        checksumType: 'MD5',
        contentLength: 928,
        url:
          'https://s3.amazonaws.com/datacommons-seeding-us-east/10_Monkey_Species_Small/assets/monkey_labels.txt'
      },
      {
        url:
          'https://s3.amazonaws.com/datacommons-seeding-us-east/10_Monkey_Species_Small/assets/validation.zip'
      }
    ],
    checksum: '',
    categories: ['image'],
    tags: ['image data', 'classification', 'animals'],
    type: 'dataset',
    description: 'EXAMPLE ONLY ',
    size: '3.1gb',
    copyrightHolder: 'Unknown',
    encoding: 'UTF-8',
    compression: 'zip',
    workExample: 'image path, id, label',
    links: [
      {
        name: 'example model',
        url:
          'https://drive.google.com/open?id=1uuz50RGiAW8YxRcWeQVgQglZpyAebgSM'
      },
      {
        name: 'example code',
        type: 'example code',
        url: 'https://github.com/slothkong/CNN_classification_10_monkey_species'
      },
      {
        url:
          'https://s3.amazonaws.com/datacommons-seeding-us-east/10_Monkey_Species_Small/links/discovery/n5151.jpg',
        name: 'n5151.jpg',
        type: 'discovery'
      },
      {
        url:
          'https://s3.amazonaws.com/datacommons-seeding-us-east/10_Monkey_Species_Small/links/sample/sample.zip',
        name: 'sample.zip',
        type: 'sample'
      }
    ],
    inLanguage: 'en'
  }
}

class App extends Component {
  async componentDidMount() {
    this.ocean = await new Ocean.getInstance({
      web3Provider: web3,
      nodeUri: 'http://localhost:8545',
      aquariusUri: 'http://localhost:5000',
      brizoUri: 'http://localhost:8030',
      brizoAddress: '0x00bd138abd70e2f00903268f3db08f2d25677c9e',
      parityUri: 'http://localhost:8545',
      secretStoreUri: 'http://localhost:12001'
    })
    console.log('Finished loading contracts!')
  }

  async submitAsset() {
    const accounts = await this.ocean.accounts.list()
    const ddo = await this.ocean.assets.create(asset, accounts[0])
    alert('Asset successfully submitted: ', JSON.stringify(ddo))
  }

  async retrieveAssets() {
    this.dbAssets = await this.ocean.assets.search('10 Monkey Species Small')
    console.log(this.dbAssets)
  }

  async consumeAsset() {
    // get all accounts
    const accounts = await this.ocean.accounts.list()
    // get first asset
    const consumeAsset = this.dbAssets[0]
    // get service we want to execute
    const service = consumeAsset.findServiceByType('Access')
    // order service agreement
    const agreement = await this.ocean.assets.order(
      consumeAsset.id,
      service.serviceDefinitionId,
      accounts[0]
    )
    // consume it
    await this.ocean.assets.consume(
      agreement,
      consumeAsset.id,
      service.serviceDefinitionId,
      accounts[0],
      ''
    )
  }

  render() {
    return (
      <div className="App App-header">
        <h1>Marketplace app</h1>
        <button onClick={() => this.submitAsset()}>Register asset</button>
        <button onClick={() => this.retrieveAssets()}>Retrieve assets</button>
        <button onClick={() => this.consumeAsset()}>Consume asset</button>
      </div>
    )
  }
}

export default App
```