aws ddb streams source AWS DynamoDB Streams Source

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Stable"

Receive events from Amazon DynamoDB Streams.

The basic authentication method for the AWS DynamoDB Streams 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 DynamoDB Streams client loads the credentials through this provider and doesn’t use the basic authentication method.

Configuration Options

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

Property Name Description Type Default Example

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

table

Table

Required The name of the DynamoDB table.

string

accessKey

Access Key

The access key obtained from AWS.

string

delay

Delay

The number of milliseconds before the next poll from the database.

integer

500

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

secretKey

Secret Key

The secret key obtained from AWS.

string

streamIteratorType

Stream Iterator Type

Defines where in the DynamoDB stream to start getting records. There are two enums and the value can be one of FROM_LATEST and FROM_START. Note that using FROM_START can cause a significant delay before the stream has caught up to real-time.

string

FROM_LATEST

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

boolean

false

Dependencies

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

  • camel:gson

  • camel:aws2-ddb

  • 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:timer-source"
      parameters:
        period: 10000
        message: 'test'
      steps:
        - to:
            uri: "kamelet:log-sink"

You can now run it directly through the following command

camel run route.yaml

Camel K Environment Usage

This section describes how you can use the aws-ddb-streams-source.

Knative source

You can use the aws-ddb-streams-source Kamelet as a Knative source by binding it to a Knative object.

aws-ddb-streams-source-pipe.yaml
apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
  name: aws-ddb-streams-source-pipe
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: aws-ddb-streams-source
    properties:
      region: The AWS Region
      table: The Table
  sink:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel

Prerequisite

You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the aws-ddb-streams-source-pipe.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the source by using the following command:

    kubectl apply -f aws-ddb-streams-source-pipe.yaml

Procedure for using the Kamel CLI

Configure and run the source by using the following command:

kamel bind channel:mychannel -p "source.region=The AWS Region" -p "source.table=The Table" aws-ddb-streams-source

This command creates the Kamelet Pipe in the current namespace on the cluster.

Kafka source

You can use the aws-ddb-streams-source Kamelet as a Kafka source by binding it to a Kafka topic.

aws-ddb-streams-source-pipe.yaml
apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
  name: aws-ddb-streams-source-pipe
spec:
  source:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: aws-ddb-streams-source
    properties:
      region: The AWS Region
      table: The Table
  sink:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic

Prerequisites

  • You’ve installed Strimzi.

  • You’ve created a topic named my-topic in the current namespace.

  • You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the aws-ddb-streams-source-pipe.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the source by using the following command:

    kubectl apply -f aws-ddb-streams-source-pipe.yaml

Procedure for using the Kamel CLI

Configure and run the source by using the following command:

kamel bind kafka.strimzi.io/v1beta1:KafkaTopic:my-topic -p "source.region=The AWS Region" -p "source.table=The Table" aws-ddb-streams-source

This command creates the Kamelet Pipe in the current namespace on the cluster.

Kamelet source file

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

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