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Information
  • Author: Appian Corporation
  • Type: Plug-in (Function & Smart Service)
  • Support: This is an Appian supported plug-in. To the extent that this plug-in does not conform to its documentation, please submit a ticket to Appian Technical Support. Appian does not support customer-created customizations or outdated versions of the plug-in.
  • Industry: All Industries
  • Compatible Version(s): 25.2
  • First Released:
  • Last Updated:
  • Cost: Free - Appian Supported
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Home » AppMarket » Amazon S3 Utilities

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:

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
Anonymous
Parents

  • Hi there,

    I am getting an error Error closing file stream.Endpoint does not contain a valid host name: null

    I get the same error whether I specify the bucket name or the bucket arn.

    For the file I am specifying an array with one element which is a full JSON filename (e.g. foobar.json).

    Any help would be appreciated.

    Regards

    Rod

  • in reply to roderickr

    Just to clarify further...

    When I use s3://somepath/foobar.json or https://somepath/foobar.json   then I get variations of 

    Error closing file stream.The specified key does not exist. (Service: Amazon S3; Status Code: 404; Error Code: NoSuchKey; 

    From https://stackoverflow.com/questions/28653249/amazon-s3-exception-the-specified-key-does-not-exist it seems people get this error when the file doesn't exist on the bucket. Am I specifying the file details incorrectly?

    If I leave out the optional Region field I get Error closing file stream.Endpoint does not contain a valid host name: null

    If I include the region to be eu-west-1 then I get the The specified key does not exist errors.

    Any suggestions would be great.

    regards

    Rod

Comment
  • in reply to roderickr

    Just to clarify further...

    When I use s3://somepath/foobar.json or https://somepath/foobar.json   then I get variations of 

    Error closing file stream.The specified key does not exist. (Service: Amazon S3; Status Code: 404; Error Code: NoSuchKey; 

    From https://stackoverflow.com/questions/28653249/amazon-s3-exception-the-specified-key-does-not-exist it seems people get this error when the file doesn't exist on the bucket. Am I specifying the file details incorrectly?

    If I leave out the optional Region field I get Error closing file stream.Endpoint does not contain a valid host name: null

    If I include the region to be eu-west-1 then I get the The specified key does not exist errors.

    Any suggestions would be great.

    regards

    Rod

Children
  • in reply to roderickr

    These are my logs:

    2025-06-27 07:45:12,203 [Appian Work Item - 2885 - WorkID 930 - execution01 - process 268464249 - model 1545 : UnattendedJavaActivityRequest] ERROR com.appiancs.plugins.amazonS3Utils.ss.DownloadObjectsFromAmazonS3 - Error closing file stream
com.amazonaws.services.s3.model.AmazonS3Exception: The specified key does not exist. (Service: Amazon S3; Status Code: 404; Error Code: NoSuchKey; Request ID: MSZ26TTCVREFYKY8; S3 Extended Request ID: 6c2JJ0h8QrPokOH+UKIfTSLBeOS99+zAHeCkn3OF4bwetQnZp8Kv1ZAHTmSJ5HieqqZRvZWLpKY=; Proxy: null), S3 Extended Request ID: 6c2JJ0h8QrPokOH+UKIfTSLBeOS99+zAHeCkn3OF4bwetQnZp8Kv1ZAHTmSJ5HieqqZRvZWLpKY=
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1879)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1418)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1387)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1157)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:814)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:781)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:755)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:715)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:697)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:561)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:541)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5558)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5505)
	at com.amazonaws.services.s3.AmazonS3Client.getObject(AmazonS3Client.java:1555)
	at com.appiancs.plugins.amazonS3Utils.ss.S3Operations.downloadFromS3(S3Operations.java:122)
	at com.appiancs.plugins.amazonS3Utils.ss.DownloadObjectsFromAmazonS3.getInputStream(DownloadObjectsFromAmazonS3.java:140)
	at com.appiancs.plugins.amazonS3Utils.ss.DownloadObjectsFromAmazonS3.run(DownloadObjectsFromAmazonS3.java:87)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.lambda$call$0(DefaultActivityExecutor.java:129)
	at com.appiancorp.plugins.PluginUsageLogger.runWithPluginInformation(PluginUsageLogger.java:54)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:129)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:123)
	at com.appiancorp.common.ContextClassLoaderSwitcher.runInContext(ContextClassLoaderSwitcher.java:30)
	at com.appiancorp.process.runtime.framework.DefaultActivityExecutor.execute(DefaultActivityExecutor.java:123)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:110)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequestResponseCreator.getJavaActivityResultResponse(UnattendedJavaActivityRequestResponseCreator.java:23)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.getJavaActivityResultResponse(UnattendedJavaActivityRequest.java:89)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute0(UnattendedJavaActivityRequest.java:72)
	at com.appiancorp.common.persistence.data.AppianDataUserContextProvider.executeWithConsistentDataReads(AppianDataUserContextProvider.java:143)
	at com.appiancorp.process.engine.ProcessContinuationRequest.executeOuter(ProcessContinuationRequest.java:68)
	at com.appiancorp.process.engine.ActivityRequest.executeOuter(ActivityRequest.java:41)
	at com.appiancorp.process.engine.ContinuationRequest.execute(ContinuationRequest.java:136)
	at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:125)
	at com.appiancorp.process.workpoller.UnattendedRequestHandlerBean.onMessage(UnattendedRequestHandlerBean.java:36)
	at com.appiancorp.process.workpoller.WorkItem.run(WorkItem.java:110)
	at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:241)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:840)
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