# import-file-from-s3

## Description

<mark style="color:purple;">`import-file-from-s3`</mark> *adaptor imports a file from an Amazon S3 compatible object storage server*.\
This Data-flo adaptor accesses files stored on S3, downloads them, and imports them into Data-flo as files, ready for further processing.

The `access key` and `secret key` of the bucket is required if the ACL of the object is set to private.

## Inputs

**`url`**\
Type: `text`\
Required: Yes\
The URL of the file to be imported, e.g., <https://s3.region-code.amazonaws.com/bucket-name/key-name>. Follow [this link](https://docs.aws.amazon.com/AmazonS3/latest/userguide/access-bucket-intro.html#path-style-url-ex) for more information about Amazon S3 bucket.

**`access key`**\
Type: `text`\
Required: No\
The access key is the user-id that uniquely identifies your account. Required when the ACL of the object is private.

**`secret key`**\
Type: `text`\
Required: No\
The secret key is the password to your account. Required when the ACL of the object is private.

## Outputs

**`file`**\
Type: `file`\
The downloaded file.

## Examples

### Example 1: Default behaviour.

#### Inputs:

`url:` <https://s3.amazonaws.com/example-bucket/example-folder/demo.nwk>

#### Outputs:

`file`: demo.nwk

```
(Bovine:0.69395,(Gibbon:0.0,(Orangutan:0.0,(Gorilla:0.0,(Chimp:0.0,Human:0.0)123:0.0)test:0.06124):0.0):0.54939,Mouse:1.21460);
```

-> Imported the Newick file `demo.nwk` from a public S3 bucket.

## Use Cases

* Pulling a Newick tree file into Data-flo to become input to [`export-to-microreact-project`](/data-flo/reference-guide/export-to-microreact-project.md).
* Importing a csv file so it can become input to the [`import-from-csv-file`](/data-flo/reference-guide/import-from-csv-file.md) adaptor.


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