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Chapter 1. AWS DynamoDB Sink

Send data to Amazon DynamoDB. The sent data inserts, updates, or deletes an item on the specified AWS DynamoDB table.

1.1. Authentication methods
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In this Kamelet you can avoid using 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 can also use the Profile Credentials Provider, by setting 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, see the AWS credentials documentation

1.2. Expected Data format for sink
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This Kamelet expects a JSON-formatted body and it must include the primary key values that define the DynamoDB item. The mapping between the JSON fields and table attribute values is done by key. For example, for '{"username":"oscerd", "city":"Rome"}' input, the Kamelet inserts or update an item in the specified AWS DynamoDB table and sets the values for the 'username' and 'city' attributes.

For PutItem operation the Json body defines all item attributes. For DeleteItem operation the Json body defines only the primary key attributes that identify the item to delete. For UpdateItem operation the Json body defines both key attributes to identify the item to be updated and all item attributes tht get updated on the item.

The given JSON body can use operation, key and item as top level properties that are mapped to the respective attribute value maps. 

      {
        "operation": "PutItem"
        "key": {},
        "item": {}
      }
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1.3. Configuration Options
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The following table summarizes the configuration options available for the aws-ddb-sink Kamelet:

Expand
PropertyNameDescriptionTypeDefaultExample

region *

AWS Region

The AWS region to access.

string

  

table *

Table

The name of the DynamoDB table.

string

  

accessKey

Access Key

The access key obtained from AWS.

string

  

operation

Operation

The operation to perform.

string

PutItem

PutItem

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

 

profileCredentialsName

Profile Credentials Name

If using a profile credentials provider this parameter sets 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 DynamoDB 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 DynamoDB client should expect to load credentials through a profile credentials provider.

boolean

False

 

useSessionCredentials

Session Credentials

Set whether the DynamoDB 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 DynamoDB.

boolean

False

 

* = Fields marked with an asterisk are mandatory.

1.4. Dependencies
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1.4.1. Quarkus dependencies
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<dependencies>
  <dependency>
    <groupId>org.apache.camel.kamelets</groupId>
    <artifactId>camel-kamelets-utils</artifactId>
    <version>4.8.5</version>
  </dependency>
  <dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-aws2-ddb</artifactId>
  </dependency>
  <dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-jackson</artifactId>
  </dependency>
  <dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-kamelet</artifactId>
  </dependency>
</dependencies>
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1.5. Usage
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1.5.1. Camel JBang usage
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1.5.1.1. Prerequisites for JBang
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  • Install JBang.

  • You have executed the following command: 

    jbang app install camel@apache/camel
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1.5.1.2. Running a route with JBang
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Suppose 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"
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You can now run it directly through the following command. 

camel run route.yaml
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1.5.2. Knative Sink
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You can use the aws-ddb-sink Kamelet as a Knative sink by binding it to a Knative object.

aws-ddb-sink-binding.yaml

apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
  name: aws-ddb-sink-binding
spec:
  source:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel
  sink:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: aws-ddb-sink
    properties:
      region: "eu-west-1"
      table: "The Table"
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1.5.3. Kafka Sink
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You can use the aws-ddb-sink Kamelet as a Kafka sink by binding it to a Kafka topic.

aws-ddb-sink-binding.yaml

apiVersion: camel.apache.org/v1
kind: Pipe
metadata:
  name: aws-ddb-sink-binding
spec:
  source:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic
  sink:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: aws-ddb-sink
    properties:
      region: "eu-west-1"
      table: "The Table"
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1.6. Kamelets source file
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https://github.com/jboss-fuse/camel-kamelets/blob/camel-kamelets-4.10.3-branch/kamelets/aws-ddb-sink.kamelet.yaml

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