# AWS Lambda - NodeJS

## What is AWS Lambda?

AWS Lambda is a service offered by Amazon Web Services that offers a serverless computing platform for creating event-driven pieces of code. Lambda automatically manages any computing resources required for the code, so there is no configuration or development environment required by the end-user.

In this guide, we’ll use Lambda for creating a PutObject function using NodeJS. This can be modified for a variety of different API requests, such as GetObject and CreateBucket, and can be used with different SDKs and Runtimes. For a list of supported SDKs and associated API request examples, check out our SDK documentation here.

Read below to learn how to configure AWS Lambda functions for NodeJS use with Filebase.

{% hint style="success" %}

### **Prerequisites:**

* [x] Have an [AWS Account](https://console.aws.amazon.com/console/home?nc2=h_ct\&src=header-signin\&region=us-east-1) configured to be used on the us-east-1 region.
* [x] [Sign up](https://filebase.com/signup) for a free Filebase account. 
* [x] Have your Filebase Access and Secret Keys. Learn how to view your access keys [here](https://docs.filebase.com/getting-started-guides/getting-started-guide#working-with-access-keys).
* [x] Create a Filebase Bucket. Learn how to create a bucket [here](https://docs.filebase.com/getting-started-guides/getting-started-guide#creating-and-working-with-buckets).
  {% endhint %}

### 1. Login to the [AWS Management Dashboard](https://us-east-1.console.aws.amazon.com/).

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FFliLsjKPLRteserwR8gD%2Fimage.png?alt=media\&token=349b807e-14b7-4288-be58-6d21e560515c)

### 2. Search ‘Lambda’ in the search bar, then select the Lambda service.

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FPfswnShu7lnLf48tzQqu%2Fimage.png?alt=media\&token=c0cc53ab-93d8-4184-970d-942552d46153)

### 3. Select ‘Create function’ from the left.

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FoRb6y04kNw7Td3ZyiDF0%2Fimage.png?alt=media\&token=2938b52f-a41f-461c-90e4-03ea38ae6d75)

### 4. From the Create function menu, select ‘Author from scratch’, provide your function with a name, and select the Nodejs 16.x runtime. Then select ‘Create Function’.

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FI6696rDWBwGowotAlmxb%2Fimage.png?alt=media\&token=ab66bce2-7946-4832-a05e-444792af5065)

### 5. Enter the following code in the code tab:

```jsx
const AWS = require('aws-sdk');
const fs = require('fs');

exports.handler =  async function(event, context) {
}

const s3 = new AWS.S3({
    endpoint: 'https://s3.filebase.com',
    region: 'us-east-1',
    signatureVersion: 'v4',
    accessKeyId: 'FILEBASE-ACCESS-KEY',
    secretAccessKey: 'FILEBASE-SECRET-KEY',
});

fs.readFile('image.png', (err, data) => {
    if (err) {
        console.error(err);
        return;
    }
    
    const params = {
        Bucket: 'BUCKET-NAME',
        Key: 'FILE-NAME.txt',
        ContentType: 'image/png',
        Body: data,
    };
    
    const request = s3.putObject(params);
    request.on('httpHeaders', (statusCode, headers) => {
        print(`CID: ${headers['x-amz-meta-cid']}`);
    });
    request.send();
});
```

Replace the following values in the code to match your configuration:

* **accessKeyId:** Your Filebase Access Key
* **secretAccessKey:** Your Filebase Secret Key
* **Bucket**: Your Filebase Bucket Name
* **Key**: The Local Path To The Object To Be Uploaded
* **Content Type:** The Type of Object Being Uploaded

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FsfYDmGW12x34xYuu9Wdw%2Fimage.png?alt=media\&token=02eb2075-ff9b-4f7e-804c-e00b2ce73fee)

### 6. Next, select ‘Configuration’, then ‘Edit’:

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FoYlJUMq3YVKeX1BAvV9A%2Fimage.png?alt=media\&token=f6d822d5-9e21-491f-be97-e7432445a8b4)

### 7. Change the ‘Timeout’ value to 30 seconds.

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FhqKLBJL4RSen58n0qbtl%2Fimage.png?alt=media\&token=c9d106e5-81a1-460a-94ff-0e0c07d6d135)

### 8. Save these configuration settings.

### 9. Select ‘Deploy’ to save your changes in the function.

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FYs2ekyBnkoIHI9P2xxA1%2Fimage.png?alt=media\&token=23878320-0c7b-4a4e-872f-d38544cd50b1)

### 10. Then select ‘Test’ and create a new test event with the following settings:

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FO35R8B4LS4S3IxdlqayR%2Fimage.png?alt=media\&token=2e506cff-cd5e-45ce-a10f-ed179ff3064b)

### 11. Then, run the test. The execution response should resemble the following:

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2FNVQumLftbJNqR8gVbJ1C%2Fimage.png?alt=media\&token=d825f3aa-0107-4f27-a51d-076be9df0f83)

### 12. Navigate to the Filebase web console dashboard to confirm the upload of your file:

![](https://3861818989-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lyjw7dWpiQtUFDa1pO0%2Fuploads%2Fpd6VFvGcgaEO6QqCkTpu%2Fimage.png?alt=media\&token=1138b9b7-cad2-4bbc-8b1a-bdc6268c5012)


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