Amazon S3 Utilities

Overview

The Amazon S3 Utilities Plug-in leverages the Amazon AWS Java API to connect with Amazon S3 to store and retrieve files.

Key Features & Functionality

The following smart services are included:

Upload documents to AWS S3
Download documents from AWS S3
Create Folders in AWS S3
Delete documents from AWS S3

The plug-in also includes a function:

getPreSignedURLForS3 that generates a V4 pre signed url that expires after 5s. This allows for a short term access grant to a secured resource. It can be used in a WebAPI object to redirect a user from Appian to a resource on S3.

Amazon S3 Utilities supports the following Amazon S3 features:

Client side encryption with AWS KMS–Managed Customer Master Key (https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingClientSideEncryption.html)
Server side encryption with Amazon S3-Managed Keys (https://docs.aws.amazon.com/AmazonS3/latest/dev/serv-side-encryption.html)

Note: The plug-in requires Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files when using client side encryption.

(https://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html)

The Appian Secure Credential Store is leveraged for the credentials to integrate with Amazon S3. Before executing the plug-in, create an new secure credential store with the following 3 attributes. These values are obtained from Amazon AWS IAM console.

accesskeyid: this is the access key id for connecting to AWS S3
accesskeysecret: this is the access key secret for connecting to AWS S3
kmscmkid: this attribute is only required if using AWS Client Side Encryption

Parents

Puspendu Pal over 2 years ago

When using the function getPreSignedURLForS3, it is returning a singed URL starting with the domain name as below.

https://s3.{bucket-name}.amazonaws.com/

While my domain name for the S3 bucket in console is as below

https://{bucket-name}.s3.us-east-1.amazonaws.com/

Does anybody know, why the function returns the URL an incorrect format. I am passing the region parameter as "us-east-1". Or how can I fix/correct this?
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Mike Cichy over 2 years ago in reply to Puspendu Pal

Is this causing an issue? Can you not access the doc?
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Mike Cichy over 2 years ago in reply to Puspendu Pal

Is this causing an issue? Can you not access the doc?
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Puspendu Pal over 2 years ago in reply to Mike Cichy

Yeah it is causing an issue. The document cannot be downloaded since the site cannot be reached. This is what I see on the browser:

__________________

This site can’t be reached

Check if there is a typo in s3.{bucket-name}.amazonaws.com.

DNS_PROBE_FINISHED_NXDOMAIN

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I tried substituting the domain name format to the format that is there in console. But it returns another error, complaining about a parameter in the URL generated by the plugin is not in the proper format. Below is what I see. It seems like the service is expecting X-Amz-Credential parameter to contain the region name, but the plugin is attaching the bucket-name to the parameter.

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<Error>

<Code>AuthorizationQueryParametersError</Code>

<Message>Error parsing the X-Amz-Credential parameter; the region {bucket-name} is wrong; expecting 'us-east-1'</Message>

<Region>us-east-1</Region>

<RequestId>PGFXG4JR599R0HHP</RequestId>

<HostId>OBy+93cPl8DsTSD1zKFZq2d1SoPaSewobbDKJDH82K7xy4Zpw+WhLta3W1MvbguaLslf14XPq0BNVB2j9ApICA==</HostId>

</Error>

_____________________
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