AWS Kinesis

Since Camel 3.2

Both producer and consumer are supported

The AWS2 Kinesis component supports receiving messages from and sending messages to Amazon Kinesis (no Batch supported) service.

Prerequisites

You must have a valid Amazon Web Services developer account, and be signed up to use Amazon Kinesis. More information are available at AWS Kinesis

URI Format

aws2-kinesis://stream-name[?options]

The stream needs to be created prior to it being used.
You can append query options to the URI in the following format, ?options=value&option2=value&…​

Configuring Options

Camel components are configured on two separate levels:

  • component level

  • endpoint level

Configuring Component Options

The component level is the highest level which holds general and common configurations that are inherited by the endpoints. For example a component may have security settings, credentials for authentication, urls for network connection and so forth.

Some components only have a few options, and others may have many. Because components typically have pre configured defaults that are commonly used, then you may often only need to configure a few options on a component; or none at all.

Configuring components can be done with the Component DSL, in a configuration file (application.properties|yaml), or directly with Java code.

Configuring Endpoint Options

Where you find yourself configuring the most is on endpoints, as endpoints often have many options, which allows you to configure what you need the endpoint to do. The options are also categorized into whether the endpoint is used as consumer (from) or as a producer (to), or used for both.

Configuring endpoints is most often done directly in the endpoint URI as path and query parameters. You can also use the Endpoint DSL as a type safe way of configuring endpoints.

A good practice when configuring options is to use Property Placeholders, which allows to not hardcode urls, port numbers, sensitive information, and other settings. In other words placeholders allows to externalize the configuration from your code, and gives more flexibility and reuse.

The following two sections lists all the options, firstly for the component followed by the endpoint.

Component Options

The AWS Kinesis component supports 21 options, which are listed below.

Name Description Default Type

amazonKinesisClient (common)

Autowired Amazon Kinesis client to use for all requests for this endpoint.

KinesisClient

cborEnabled (common)

This option will set the CBOR_ENABLED property during the execution.

boolean

configuration (common)

Component configuration.

Kinesis2Configuration

overrideEndpoint (common)

Set the need for overidding the endpoint. This option needs to be used in combination with uriEndpointOverride option.

boolean

proxyHost (common)

To define a proxy host when instantiating the Kinesis client.

String

proxyPort (common)

To define a proxy port when instantiating the Kinesis client.

Integer

proxyProtocol (common)

To define a proxy protocol when instantiating the Kinesis client.

Enum values:

  • HTTP

  • HTTPS

Protocol

region (common)

The region in which Kinesis Firehose client needs to work. When using this parameter, the configuration will expect the lowercase name of the region (for example ap-east-1) You’ll need to use the name Region.EU_WEST_1.id().

String

trustAllCertificates (common)

If we want to trust all certificates in case of overriding the endpoint.

boolean

uriEndpointOverride (common)

Set the overriding uri endpoint. This option needs to be used in combination with overrideEndpoint option.

String

useDefaultCredentialsProvider (common)

Set whether the Kinesis client should expect to load credentials through a default credentials provider or to expect static credentials to be passed in.

boolean

bridgeErrorHandler (consumer)

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

boolean

iteratorType (consumer)

Defines where in the Kinesis stream to start getting records.

Enum values:

  • AT_SEQUENCE_NUMBER

  • AFTER_SEQUENCE_NUMBER

  • TRIM_HORIZON

  • LATEST

  • AT_TIMESTAMP

  • null

ShardIteratorType

maxResultsPerRequest (consumer)

Maximum number of records that will be fetched in each poll.

int

sequenceNumber (consumer)

The sequence number to start polling from. Required if iteratorType is set to AFTER_SEQUENCE_NUMBER or AT_SEQUENCE_NUMBER.

String

shardClosed (consumer)

Define what will be the behavior in case of shard closed. Possible value are ignore, silent and fail. In case of ignore a message will be logged and the consumer will restart from the beginning,in case of silent there will be no logging and the consumer will start from the beginning,in case of fail a ReachedClosedStateException will be raised.

Enum values:

  • ignore

  • fail

  • silent

Kinesis2ShardClosedStrategyEnum

shardId (consumer)

Defines which shardId in the Kinesis stream to get records from.

String

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

boolean

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

boolean

accessKey (security)

Amazon AWS Access Key.

String

secretKey (security)

Amazon AWS Secret Key.

String

Endpoint Options

The AWS Kinesis endpoint is configured using URI syntax:

aws2-kinesis:streamName

with the following path and query parameters:

Path Parameters (1 parameters)

Name Description Default Type

streamName (common)

Required Name of the stream.

String

Query Parameters (37 parameters)

Name Description Default Type

amazonKinesisClient (common)

Autowired Amazon Kinesis client to use for all requests for this endpoint.

KinesisClient

cborEnabled (common)

This option will set the CBOR_ENABLED property during the execution.

boolean

overrideEndpoint (common)

Set the need for overidding the endpoint. This option needs to be used in combination with uriEndpointOverride option.

boolean

proxyHost (common)

To define a proxy host when instantiating the Kinesis client.

String

proxyPort (common)

To define a proxy port when instantiating the Kinesis client.

Integer

proxyProtocol (common)

To define a proxy protocol when instantiating the Kinesis client.

Enum values:

  • HTTP

  • HTTPS

Protocol

region (common)

The region in which Kinesis Firehose client needs to work. When using this parameter, the configuration will expect the lowercase name of the region (for example ap-east-1) You’ll need to use the name Region.EU_WEST_1.id().

String

trustAllCertificates (common)

If we want to trust all certificates in case of overriding the endpoint.

boolean

uriEndpointOverride (common)

Set the overriding uri endpoint. This option needs to be used in combination with overrideEndpoint option.

String

useDefaultCredentialsProvider (common)

Set whether the Kinesis client should expect to load credentials through a default credentials provider or to expect static credentials to be passed in.

boolean

bridgeErrorHandler (consumer)

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

boolean

iteratorType (consumer)

Defines where in the Kinesis stream to start getting records.

Enum values:

  • AT_SEQUENCE_NUMBER

  • AFTER_SEQUENCE_NUMBER

  • TRIM_HORIZON

  • LATEST

  • AT_TIMESTAMP

  • null

ShardIteratorType

maxResultsPerRequest (consumer)

Maximum number of records that will be fetched in each poll.

int

sendEmptyMessageWhenIdle (consumer)

If the polling consumer did not poll any files, you can enable this option to send an empty message (no body) instead.

boolean

sequenceNumber (consumer)

The sequence number to start polling from. Required if iteratorType is set to AFTER_SEQUENCE_NUMBER or AT_SEQUENCE_NUMBER.

String

shardClosed (consumer)

Define what will be the behavior in case of shard closed. Possible value are ignore, silent and fail. In case of ignore a message will be logged and the consumer will restart from the beginning,in case of silent there will be no logging and the consumer will start from the beginning,in case of fail a ReachedClosedStateException will be raised.

Enum values:

  • ignore

  • fail

  • silent

Kinesis2ShardClosedStrategyEnum

shardId (consumer)

Defines which shardId in the Kinesis stream to get records from.

String

exceptionHandler (consumer (advanced))

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.

ExceptionHandler

exchangePattern (consumer (advanced))

Sets the exchange pattern when the consumer creates an exchange.

Enum values:

  • InOnly

  • InOut

  • InOptionalOut

ExchangePattern

pollStrategy (consumer (advanced))

A pluggable org.apache.camel.PollingConsumerPollingStrategy allowing you to provide your custom implementation to control error handling usually occurred during the poll operation before an Exchange have been created and being routed in Camel.

PollingConsumerPollStrategy

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

boolean

backoffErrorThreshold (scheduler)

The number of subsequent error polls (failed due some error) that should happen before the backoffMultipler should kick-in.

int

backoffIdleThreshold (scheduler)

The number of subsequent idle polls that should happen before the backoffMultipler should kick-in.

int

backoffMultiplier (scheduler)

To let the scheduled polling consumer backoff if there has been a number of subsequent idles/errors in a row. The multiplier is then the number of polls that will be skipped before the next actual attempt is happening again. When this option is in use then backoffIdleThreshold and/or backoffErrorThreshold must also be configured.

int

delay (scheduler)

Milliseconds before the next poll.

long

greedy (scheduler)

If greedy is enabled, then the ScheduledPollConsumer will run immediately again, if the previous run polled 1 or more messages.

boolean

initialDelay (scheduler)

Milliseconds before the first poll starts.

long

repeatCount (scheduler)

Specifies a maximum limit of number of fires. So if you set it to 1, the scheduler will only fire once. If you set it to 5, it will only fire five times. A value of zero or negative means fire forever.

long

runLoggingLevel (scheduler)

The consumer logs a start/complete log line when it polls. This option allows you to configure the logging level for that.

Enum values:

  • TRACE

  • DEBUG

  • INFO

  • WARN

  • ERROR

  • OFF

LoggingLevel

scheduledExecutorService (scheduler)

Allows for configuring a custom/shared thread pool to use for the consumer. By default each consumer has its own single threaded thread pool.

ScheduledExecutorService

scheduler (scheduler)

To use a cron scheduler from either camel-spring or camel-quartz component. Use value spring or quartz for built in scheduler.

Object

schedulerProperties (scheduler)

To configure additional properties when using a custom scheduler or any of the Quartz, Spring based scheduler.

Map

startScheduler (scheduler)

Whether the scheduler should be auto started.

boolean

timeUnit (scheduler)

Time unit for initialDelay and delay options.

Enum values:

  • NANOSECONDS

  • MICROSECONDS

  • MILLISECONDS

  • SECONDS

  • MINUTES

  • HOURS

  • DAYS

TimeUnit

useFixedDelay (scheduler)

Controls if fixed delay or fixed rate is used. See ScheduledExecutorService in JDK for details.

boolean

accessKey (security)

Amazon AWS Access Key.

String

secretKey (security)

Amazon AWS Secret Key.

String

Required Kinesis component options

You have to provide the KinesisClient in the Registry with proxies and relevant credentials configured.

Batch Consumer

This component implements the Batch Consumer.

This allows you for instance to know how many messages exists in this batch and for instance let the Aggregator aggregate this number of messages.

Usage

Static credentials vs Default Credential Provider

You have the possibility of avoiding the usage of explicit static credentials, by specifying the useDefaultCredentialsProvider option and set it to true.

  • 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.

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

Message headers set by the Kinesis consumer

Header Type Description

CamelAwsKinesisSequenceNumber

String

The sequence number of the record. This is represented as a String as it size is not defined by the API. If it is to be used as a numerical type then use

CamelAwsKinesisApproximateArrivalTimestamp

String

The time AWS assigned as the arrival time of the record.

CamelAwsKinesisPartitionKey

String

Identifies which shard in the stream the data record is assigned to.

AmazonKinesis configuration

You then have to reference the KinesisClient in the amazonKinesisClient URI option.

from("aws2-kinesis://mykinesisstream?amazonKinesisClient=#kinesisClient")
  .to("log:out?showAll=true");

Providing AWS Credentials

It is recommended that the credentials are obtained by using the DefaultAWSCredentialsProviderChain that is the default when creating a new ClientConfiguration instance, however, a different AWSCredentialsProvider can be specified when calling createClient(…​).

Message headers used by the Kinesis producer to write to Kinesis. The producer expects that the message body is a byte[].

Header Type Description

CamelAwsKinesisPartitionKey

String

The PartitionKey to pass to Kinesis to store this record.

CamelAwsKinesisSequenceNumber

String

Optional paramter to indicate the sequence number of this record.

Message headers set by the Kinesis producer on successful storage of a Record

Header Type Description

CamelAwsKinesisSequenceNumber

String

The sequence number of the record, as defined in Response Syntax

CamelAwsKinesisShardId

String

The shard ID of where the Record was stored

Dependencies

Maven users will need to add the following dependency to their pom.xml.

pom.xml

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-aws2-kinesis</artifactId>
    <version>${camel-version}</version>
</dependency>

where ${camel-version} must be replaced by the actual version of Camel.

Spring Boot Auto-Configuration

When using aws2-kinesis with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

<dependency>
  <groupId>org.apache.camel.springboot</groupId>
  <artifactId>camel-aws2-kinesis-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 39 options, which are listed below.

Name Description Default Type

camel.component.aws2-kinesis-firehose.access-key

Amazon AWS Access Key.

String

camel.component.aws2-kinesis-firehose.amazon-kinesis-firehose-client

Amazon Kinesis Firehose client to use for all requests for this endpoint. The option is a software.amazon.awssdk.services.firehose.FirehoseClient type.

FirehoseClient

camel.component.aws2-kinesis-firehose.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

Boolean

camel.component.aws2-kinesis-firehose.cbor-enabled

This option will set the CBOR_ENABLED property during the execution.

true

Boolean

camel.component.aws2-kinesis-firehose.configuration

Component configuration. The option is a org.apache.camel.component.aws2.firehose.KinesisFirehose2Configuration type.

KinesisFirehose2Configuration

camel.component.aws2-kinesis-firehose.enabled

Whether to enable auto configuration of the aws2-kinesis-firehose component. This is enabled by default.

Boolean

camel.component.aws2-kinesis-firehose.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean

camel.component.aws2-kinesis-firehose.operation

The operation to do in case the user don’t want to send only a record.

KinesisFirehose2Operations

camel.component.aws2-kinesis-firehose.override-endpoint

Set the need for overidding the endpoint. This option needs to be used in combination with uriEndpointOverride option.

false

Boolean

camel.component.aws2-kinesis-firehose.proxy-host

To define a proxy host when instantiating the Kinesis Firehose client.

String

camel.component.aws2-kinesis-firehose.proxy-port

To define a proxy port when instantiating the Kinesis Firehose client.

Integer

camel.component.aws2-kinesis-firehose.proxy-protocol

To define a proxy protocol when instantiating the Kinesis Firehose client.

Protocol

camel.component.aws2-kinesis-firehose.region

The region in which Kinesis Firehose client needs to work. When using this parameter, the configuration will expect the lowercase name of the region (for example ap-east-1) You’ll need to use the name Region.EU_WEST_1.id().

String

camel.component.aws2-kinesis-firehose.secret-key

Amazon AWS Secret Key.

String

camel.component.aws2-kinesis-firehose.trust-all-certificates

If we want to trust all certificates in case of overriding the endpoint.

false

Boolean

camel.component.aws2-kinesis-firehose.uri-endpoint-override

Set the overriding uri endpoint. This option needs to be used in combination with overrideEndpoint option.

String

camel.component.aws2-kinesis-firehose.use-default-credentials-provider

Set whether the Kinesis Firehose client should expect to load credentials through a default credentials provider or to expect static credentials to be passed in.

false

Boolean

camel.component.aws2-kinesis.access-key

Amazon AWS Access Key.

String

camel.component.aws2-kinesis.amazon-kinesis-client

Amazon Kinesis client to use for all requests for this endpoint. The option is a software.amazon.awssdk.services.kinesis.KinesisClient type.

KinesisClient

camel.component.aws2-kinesis.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

Boolean

camel.component.aws2-kinesis.bridge-error-handler

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

Boolean

camel.component.aws2-kinesis.cbor-enabled

This option will set the CBOR_ENABLED property during the execution.

true

Boolean

camel.component.aws2-kinesis.configuration

Component configuration. The option is a org.apache.camel.component.aws2.kinesis.Kinesis2Configuration type.

Kinesis2Configuration

camel.component.aws2-kinesis.enabled

Whether to enable auto configuration of the aws2-kinesis component. This is enabled by default.

Boolean

camel.component.aws2-kinesis.iterator-type

Defines where in the Kinesis stream to start getting records.

ShardIteratorType

camel.component.aws2-kinesis.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean

camel.component.aws2-kinesis.max-results-per-request

Maximum number of records that will be fetched in each poll.

1

Integer

camel.component.aws2-kinesis.override-endpoint

Set the need for overidding the endpoint. This option needs to be used in combination with uriEndpointOverride option.

false

Boolean

camel.component.aws2-kinesis.proxy-host

To define a proxy host when instantiating the Kinesis client.

String

camel.component.aws2-kinesis.proxy-port

To define a proxy port when instantiating the Kinesis client.

Integer

camel.component.aws2-kinesis.proxy-protocol

To define a proxy protocol when instantiating the Kinesis client.

Protocol

camel.component.aws2-kinesis.region

The region in which Kinesis Firehose client needs to work. When using this parameter, the configuration will expect the lowercase name of the region (for example ap-east-1) You’ll need to use the name Region.EU_WEST_1.id().

String

camel.component.aws2-kinesis.secret-key

Amazon AWS Secret Key.

String

camel.component.aws2-kinesis.sequence-number

The sequence number to start polling from. Required if iteratorType is set to AFTER_SEQUENCE_NUMBER or AT_SEQUENCE_NUMBER.

String

camel.component.aws2-kinesis.shard-closed

Define what will be the behavior in case of shard closed. Possible value are ignore, silent and fail. In case of ignore a message will be logged and the consumer will restart from the beginning,in case of silent there will be no logging and the consumer will start from the beginning,in case of fail a ReachedClosedStateException will be raised.

Kinesis2ShardClosedStrategyEnum

camel.component.aws2-kinesis.shard-id

Defines which shardId in the Kinesis stream to get records from.

String

camel.component.aws2-kinesis.trust-all-certificates

If we want to trust all certificates in case of overriding the endpoint.

false

Boolean

camel.component.aws2-kinesis.uri-endpoint-override

Set the overriding uri endpoint. This option needs to be used in combination with overrideEndpoint option.

String

camel.component.aws2-kinesis.use-default-credentials-provider

Set whether the Kinesis client should expect to load credentials through a default credentials provider or to expect static credentials to be passed in.

false

Boolean