AWS Eventbridge

Since Camel 3.6

Only producer is supported

The AWS2 Eventbridge component supports assumeRole operation. AWS Eventbridge.

Prerequisites

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

To create a rule that triggers on an action by an AWS service that does not emit events, you can base the rule on API calls made by that service. The API calls are recorded by AWS CloudTrail, so you’ll need to have CloudTrail enabled. For more information, check Services Supported by CloudTrail Event History.

URI Format

aws2-eventbridge://label[?options]

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 and DataFormat DSL as a type safe way of configuring endpoints and data formats in Java.

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 Eventbridge component supports 23 options, which are listed below.

Name Description Default Type

configuration (producer)

Component configuration.

EventbridgeConfiguration

eventPatternFile (producer)

EventPattern File.

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.

false

boolean

operation (producer)

Required The operation to perform.

Enum values:

  • putRule

  • putTargets

  • removeTargets

  • deleteRule

  • enableRule

  • disableRule

  • describeRule

  • listRules

  • listTargetsByRule

  • listRuleNamesByTarget

  • putEvent

putRule

EventbridgeOperations

overrideEndpoint (producer)

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

false

boolean

pojoRequest (producer)

If we want to use a POJO request as body or not.

false

boolean

region (producer)

The region in which the Eventbridge 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().

Enum values:

  • ap-south-2

  • ap-south-1

  • eu-south-1

  • eu-south-2

  • us-gov-east-1

  • me-central-1

  • il-central-1

  • ca-central-1

  • eu-central-1

  • us-iso-west-1

  • eu-central-2

  • 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

  • ap-southeast-4

  • 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

uriEndpointOverride (producer)

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

String

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.

true

boolean

eventbridgeClient (advanced)

Autowired To use an existing configured AWS Eventbridge client.

EventBridgeClient

healthCheckConsumerEnabled (health)

Used for enabling or disabling all consumer based health checks from this component.

true

boolean

healthCheckProducerEnabled (health)

Used for enabling or disabling all producer based health checks from this component. Notice: Camel has by default disabled all producer based health-checks. You can turn on producer checks globally by setting camel.health.producersEnabled=true.

true

boolean

proxyHost (proxy)

To define a proxy host when instantiating the Eventbridge client.

String

proxyPort (proxy)

To define a proxy port when instantiating the Eventbridge client.

Integer

proxyProtocol (proxy)

To define a proxy protocol when instantiating the Eventbridge client.

Enum values:

  • HTTP

  • HTTPS

HTTPS

Protocol

accessKey (security)

Amazon AWS Access Key.

String

profileCredentialsName (security)

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

String

secretKey (security)

Amazon AWS Secret Key.

String

sessionToken (security)

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

String

trustAllCertificates (security)

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

false

boolean

useDefaultCredentialsProvider (security)

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

false

boolean

useProfileCredentialsProvider (security)

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

false

boolean

useSessionCredentials (security)

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

false

boolean

Endpoint Options

The AWS Eventbridge endpoint is configured using URI syntax:

aws2-eventbridge://eventbusNameOrArn

with the following path and query parameters:

Path Parameters (1 parameters)

Name Description Default Type

eventbusNameOrArn (producer)

Required Event bus name or ARN.

String

Query Parameters (19 parameters)

Name Description Default Type

eventPatternFile (producer)

EventPattern File.

String

operation (producer)

Required The operation to perform.

Enum values:

  • putRule

  • putTargets

  • removeTargets

  • deleteRule

  • enableRule

  • disableRule

  • describeRule

  • listRules

  • listTargetsByRule

  • listRuleNamesByTarget

  • putEvent

putRule

EventbridgeOperations

overrideEndpoint (producer)

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

false

boolean

pojoRequest (producer)

If we want to use a POJO request as body or not.

false

boolean

region (producer)

The region in which the Eventbridge 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().

Enum values:

  • ap-south-2

  • ap-south-1

  • eu-south-1

  • eu-south-2

  • us-gov-east-1

  • me-central-1

  • il-central-1

  • ca-central-1

  • eu-central-1

  • us-iso-west-1

  • eu-central-2

  • 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

  • ap-southeast-4

  • 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

uriEndpointOverride (producer)

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

String

lazyStartProducer (producer (advanced))

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

eventbridgeClient (advanced)

Autowired To use an existing configured AWS Eventbridge client.

EventBridgeClient

proxyHost (proxy)

To define a proxy host when instantiating the Eventbridge client.

String

proxyPort (proxy)

To define a proxy port when instantiating the Eventbridge client.

Integer

proxyProtocol (proxy)

To define a proxy protocol when instantiating the Eventbridge client.

Enum values:

  • HTTP

  • HTTPS

HTTPS

Protocol

accessKey (security)

Amazon AWS Access Key.

String

profileCredentialsName (security)

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

String

secretKey (security)

Amazon AWS Secret Key.

String

sessionToken (security)

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

String

trustAllCertificates (security)

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

false

boolean

useDefaultCredentialsProvider (security)

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

false

boolean

useProfileCredentialsProvider (security)

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

false

boolean

useSessionCredentials (security)

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

false

boolean

Static credentials, Default Credential Provider and Profile Credentials Provider

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 static, default and profile credentials could be used at the same time.

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

Message Headers

The AWS Eventbridge component supports 10 message header(s), which is/are listed below:

Name Description Default Type

CamelAwsEventbridgeOperation (producer)

Constant: OPERATION

The operation we want to perform.

String

CamelAwsEventbridgeRuleName (producer)

Constant: RULE_NAME

The name of the rule.

String

CamelAwsEventbridgeRuleNamePrefix (producer)

Constant: RULE_NAME_PREFIX

The prefix matching the rule name.

String

CamelAwsEventbridgeEventPattern (producer)

Constant: EVENT_PATTERN

The event pattern.

String

CamelAwsEventbridgeTargets (producer)

Constant: TARGETS

The targets to update or add to the rule.

Collection

CamelAwsEventbridgeTargetsIds (producer)

Constant: TARGETS_IDS

The IDs of the targets to remove from the rule.

Collection

CamelAwsEventbridgeTargetArn (producer)

Constant: TARGET_ARN

The Amazon Resource Name (ARN) of the target resource.

String

CamelAwsEventbridgeResourcesArn (producer)

Constant: EVENT_RESOURCES_ARN

Comma separated list of Amazon Resource Names (ARN) of the resources related to Event.

String

CamelAwsEventbridgeSource (producer)

Constant: EVENT_SOURCE

The source related to Event.

String

CamelAwsEventbridgeDetailType (producer)

Constant: EVENT_DETAIL_TYPE

The detail type related to Event.

String

AWS2-Eventbridge Producer operations

Camel-AWS2-Eventbridge component provides the following operation on the producer side:

  • putRule

  • putTargets

  • removeTargets

  • deleteRule

  • enableRule

  • disableRule

  • listRules

  • describeRule

  • listTargetsByRule

  • listRuleNamesByTarget

  • putEvent

  • PutRule: this operation creates a rule related to an eventbus

  from("direct:putRule").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=putRule&eventPatternFile=file:src/test/resources/eventpattern.json")
  .to("mock:result");

This operation will create a rule named firstrule, and it will use a json file for defining the EventPattern.

  • PutTargets: this operation will add a target to the rule

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
          Target target = Target.builder().id("sqs-queue").arn("arn:aws:sqs:eu-west-1:780410022472:camel-connector-test")
                .build();
          List<Target> targets = new ArrayList<Target>();
          targets.add(target);
          exchange.getIn().setHeader(EventbridgeConstants.TARGETS, targets);
      }
  })
  .to("aws2-eventbridge://test?operation=putTargets")
  .to("mock:result");

This operation will add the target sqs-queue with the arn reported to the targets of the firstrule rule.

  • RemoveTargets: this operation will remove a collection of targets from the rule

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
          List<String> ids = new ArrayList<String>();
          targets.add("sqs-queue");
          exchange.getIn().setHeader(EventbridgeConstants.TARGETS_IDS, targets);
      }
  })
  .to("aws2-eventbridge://test?operation=removeTargets")
  .to("mock:result");

This operation will remove the target sqs-queue from the firstrule rule.

  • DeleteRule: this operation will delete a rule related to an eventbus

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=deleteRule")
  .to("mock:result");

This operation will remove the firstrule rule from the test eventbus.

  • EnableRule: this operation will enable a rule related to an eventbus

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=enableRule")
  .to("mock:result");

This operation will enable the firstrule rule from the test eventbus.

  • DisableRule: this operation will disable a rule related to an eventbus

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=disableRule")
  .to("mock:result");

This operation will disable the firstrule rule from the test eventbus.

  • ListRules: this operation will list all the rules related to an eventbus with prefix first

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME_PREFIX, "first");
      }
  })
  .to("aws2-eventbridge://test?operation=listRules")
  .to("mock:result");

This operation will list all the rules with prefix first from the test eventbus.

  • DescribeRule: this operation will describe a specified rule related to an eventbus

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=describeRule")
  .to("mock:result");

This operation will describe the firstrule rule from the test eventbus.

  • ListTargetsByRule: this operation will return a list of targets associated with a rule

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.RULE_NAME, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=listTargetsByRule")
  .to("mock:result");

this operation will return a list of targets associated with the firstrule rule.

  • ListRuleNamesByTarget: this operation will return a list of rules associated with a target

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
          exchange.getIn().setHeader(EventbridgeConstants.TARGET_ARN, "firstrule");
      }
  })
  .to("aws2-eventbridge://test?operation=listRuleNamesByTarget")
  .to("mock:result");

this operation will return a list of rules associated with a target.

  • PutEvent: this operation will send an event to the Servicebus

  from("direct:start").process(new Processor() {

      @Override
      public void process(Exchange exchange) throws Exception {
                exchange.getIn().setHeader(EventbridgeConstants.EVENT_RESOURCES_ARN, "arn:aws:sqs:eu-west-1:780410022472:camel-connector-test");
                exchange.getIn().setHeader(EventbridgeConstants.EVENT_SOURCE, "com.pippo");
                exchange.getIn().setHeader(EventbridgeConstants.EVENT_DETAIL_TYPE, "peppe");
                exchange.getIn().setBody("Test Event");
      }
  })
  .to("aws2-eventbridge://test?operation=putEvent")
  .to("mock:result");

this operation will return a list of entries with related ID sent to servicebus.

Updating the rule

To update a rule, you’ll need to perform the putRule operation again. There is no explicit update rule operation in the Java SDK.

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-eventbridge</artifactId>
    <version>${camel-version}</version>
</dependency>

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