aws s3 source AWS S3 Source

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Stable"

Receive data from an Amazon S3 Bucket.

The basic authentication method for the S3 service is to specify an access key and a secret key. These parameters are optional because the Kamelet provides a default credentials provider.

If you use the default credentials provider, the S3 client loads the credentials through this provider and doesn’t use the basic authentication method.

Two headers will be duplicated with different names for clarity at sink level, CamelAwsS3Key will be duplicated into aws.s3.key and CamelAwsS3BucketName will be duplicated in aws.s3.bucket.name

Configuration Options

The following table summarizes the configuration options available for the aws-s3-source Kamelet:

Property Name Description Type Default Example

bucketNameOrArn

Bucket Name

Required The S3 Bucket name or Amazon Resource Name (ARN).

string

region

AWS Region

Required The AWS region to access.

Enum values:

* ap-south-1 * eu-south-1 * us-gov-east-1 * me-central-1 * ca-central-1 * eu-central-1 * us-iso-west-1 * us-west-1 * us-west-2 * af-south-1 * eu-north-1 * eu-west-3 * eu-west-2 * eu-west-1 * ap-northeast-3 * ap-northeast-2 * ap-northeast-1 * me-south-1 * sa-east-1 * ap-east-1 * cn-north-1 * us-gov-west-1 * ap-southeast-1 * ap-southeast-2 * us-iso-east-1 * ap-southeast-3 * us-east-1 * us-east-2 * cn-northwest-1 * us-isob-east-1 * aws-global * aws-cn-global * aws-us-gov-global * aws-iso-global * aws-iso-b-global

string

accessKey

Access Key

The access key obtained from AWS.

string

autoCreateBucket

Autocreate Bucket

Specifies to automatically create the S3 bucket.

boolean

false

delay

Delay

The number of milliseconds before the next poll of the selected bucket.

integer

500

deleteAfterRead

Auto-delete Objects

Specifies to delete objects after consuming them.

boolean

true

destinationBucket

Destination Bucket

Define the destination bucket where an object must be moved when moveAfterRead is set to true.

string

destinationBucketPrefix

Destination Bucket Prefix

Define the destination bucket prefix to use when an object must be moved, and moveAfterRead is set to true.

string

destinationBucketSuffix

Destination Bucket Suffix

Define the destination bucket suffix to use when an object must be moved, and moveAfterRead is set to true.

string

forcePathStyle

Force Path Style

Forces path style when accessing AWS S3 buckets.

boolean

false

ignoreBody

Ignore Body

If true, the S3 Object body is ignored. Setting this to true overrides any behavior defined by the includeBody option. If false, the S3 object is put in the body.

boolean

false

maxMessagesPerPoll

Max Messages Per Poll

Gets the maximum number of messages as a limit to poll at each polling. Gets the maximum number of messages as a limit to poll at each polling. The default value is 10. Use 0 or a negative number to set it as unlimited.

integer

10

moveAfterRead

Move Objects After Delete

Move objects from S3 bucket to a different bucket after they have been retrieved.

boolean

false

overrideEndpoint

Endpoint Overwrite

Select this option to override the endpoint URI. To use this option, you must also provide a URI for the uriEndpointOverride option.

boolean

false

prefix

Prefix

The AWS S3 bucket prefix to consider while searching.

string

folder/

profileCredentialsName

Profile Credentials Name

If using a profile credentials provider this parameter will set the profile name.

string

secretKey

Secret Key

The secret key obtained from AWS.

string

sessionToken

Session Token

Amazon AWS Session Token used when the user needs to assume a IAM role.

string

uriEndpointOverride

Overwrite Endpoint URI

The overriding endpoint URI. To use this option, you must also select the overrideEndpoint option.

string

useDefaultCredentialsProvider

Default Credentials Provider

If true, the S3 client loads credentials through a default credentials provider. If false, it uses the basic authentication method (access key and secret key).

boolean

false

useProfileCredentialsProvider

Profile Credentials Provider

Set whether the S3 client should expect to load credentials through a profile credentials provider.

boolean

false

useSessionCredentials

Session Credentials

Set whether the S3 client should expect to use Session Credentials. This is useful in situation in which the user needs to assume a IAM role for doing operations in S3.

boolean

false

Dependencies

At runtime, the aws-s3-source Kamelet relies upon the presence of the following dependencies:

  • camel:core

  • camel:aws2-s3

  • camel:kamelet

Camel JBang usage

Prerequisites

  • You’ve installed JBang.

  • You have executed the following command:

jbang app install camel@apache/camel

Supposing you have a file named route.yaml with this content:

- route:
    from:
      uri: "kamelet:aws-s3-source"
      parameters:
        .
        .
        .
      steps:
        - to:
            uri: "kamelet:log-sink"

You can now run it directly through the following command

camel run route.yaml

AWS S3 Source Kamelet Description

Authentication methods

In this Kamelet you have the possibility of avoiding the usage of explicit static credentials by specifying the useDefaultCredentialsProvider option and set it to true.

The order of evaluation for Default Credentials Provider is the following:

  • Java system properties - aws.accessKeyId and aws.secretKey.

  • Environment variables - AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY.

  • Web Identity Token from AWS STS.

  • The shared credentials and config files.

  • Amazon ECS container credentials - loaded from the Amazon ECS if the environment variable AWS_CONTAINER_CREDENTIALS_RELATIVE_URI is set.

  • Amazon EC2 Instance profile credentials.

You have also the possibility of using Profile Credentials Provider, by specifying the useProfileCredentialsProvider option to true and profileCredentialsName to the profile name.

Only one of access key/secret key or default credentials provider could be used

For more information about this you can look at AWS credentials documentation

Usage examples

You could consume the bucket content and directly delete the object once consumed

- route:
    from:
      uri: "kamelet:aws-s3-source"
      parameters:
        useDefaultCredentialsProvider: true
        region: "eu-west-1"
        bucketNameOrArn: "kamelets"
      steps:
        - to:
            uri: "kamelet:log-sink"

This kind of approach will ensure the object will be consumed just one time and after the consumption it will be deleted from the S3 bucket.

The deleteAfterRead property is true by default.

If you set the property to false you’ll consume the same set of objects multiple times and you’ll have to deal with managing the situation.

The ignoreBody option is set to false by default, but you have the possibility to enable it. With that option set you’re going to ignore the file payload and just consume the object metadata.

You could also define a prefix parameter. With that set you’re going to consume only files starting with that prefix. As an example you could have:

- route:
    from:
      uri: "kamelet:aws-s3-source"
      parameters:
        useDefaultCredentialsProvider: true
        region: "eu-west-1"
        bucketNameOrArn: "kamelets"
        prefix: "foo/"
      steps:
        - to:
            uri: "kamelet:log-sink"

By using the prefix foo/ the files consumed will only come from the folder named foo.

Kamelet source file

https://github.com/apache/camel-kamelets/blob/main/kamelets/aws-s3-source.kamelet.yaml

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