[[aws2-eventbridge-component]]
= AWS Eventbridge Component
:docTitle: AWS Eventbridge
:shortname: aws2-eventbridge
:artifactId: camel-aws2-eventbridge
:description: Manage AWS Eventbridge cluster instances using AWS SDK version 2.x.
:since: 3.6
:supportLevel: Stable
:component-header: Only producer is supported
//Manually maintained attributes
:group: AWS
:camel-spring-boot-name: aws2-eventbridge

*Since Camel {since}*

*{component-header}*

The AWS2 Eventbridge component supports assumeRole operation.
https://aws.amazon.com/eventbridge/[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
https://aws.amazon.com/eventbridge/[Amazon Eventbridge].

[NOTE]
====
The AWS2 Eventbridge component is not supported in OSGI
====

[NOTE]
====
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 https://docs.aws.amazon.com/awscloudtrail/latest/userguide/view-cloudtrail-events.html[Services Supported by CloudTrail Event History].
====

== URI Format

[source,java]
-------------------------
aws2-eventbridge://label[?options]
-------------------------

You can append query options to the URI in the following format,
?options=value&option2=value&...

== URI Options


// component options: START
The AWS Eventbridge component supports 17 options, which are listed below.



[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *configuration* (producer) | Component configuration |  | EventbridgeConfiguration
| *eventbridgeClient* (producer) | *Autowired* To use a existing configured AWS Eventbridge as client |  | EventBridgeClient
| *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. There are 10 enums and the value can be one of: putRule, putTargets, removeTargets, deleteRule, enableRule, disableRule, describeRule, listRules, listTargetsByRule, listRuleNamesByTarget | putRule | EventbridgeOperations
| *overrideEndpoint* (producer) | Set the need for overidding the endpoint. This option needs to be used in combination with uriEndpointOverride option | false | boolean
| *pojoRequest* (producer) | If we want to use a POJO request as body or not | false | boolean
| *proxyHost* (producer) | To define a proxy host when instantiating the Eventbridge client |  | String
| *proxyPort* (producer) | To define a proxy port when instantiating the Eventbridge client |  | Integer
| *proxyProtocol* (producer) | To define a proxy protocol when instantiating the Eventbridge client. There are 2 enums and the value can be one of: HTTP, HTTPS | HTTPS | Protocol
| *region* (producer) | The region in which 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() |  | String
| *trustAllCertificates* (producer) | If we want to trust all certificates in case of overriding the endpoint | false | boolean
| *uriEndpointOverride* (producer) | Set the overriding uri endpoint. This option needs to be used in combination with overrideEndpoint option |  | String
| *useDefaultCredentialsProvider* (producer) | 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
| *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
| *accessKey* (security) | Amazon AWS Access Key |  | String
| *secretKey* (security) | Amazon AWS Secret Key |  | String
|===
// component options: END




// endpoint options: START
The AWS Eventbridge endpoint is configured using URI syntax:

----
aws2-eventbridge://eventbusNameOrArn
----

with the following path and query parameters:

=== Path Parameters (1 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *eventbusNameOrArn* | *Required* Event bus name or ARN |  | String
|===


=== Query Parameters (15 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *eventbridgeClient* (producer) | *Autowired* To use a existing configured AWS Eventbridge as client |  | EventBridgeClient
| *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. There are 10 enums and the value can be one of: putRule, putTargets, removeTargets, deleteRule, enableRule, disableRule, describeRule, listRules, listTargetsByRule, listRuleNamesByTarget | putRule | EventbridgeOperations
| *overrideEndpoint* (producer) | Set the need for overidding the endpoint. This option needs to be used in combination with uriEndpointOverride option | false | boolean
| *pojoRequest* (producer) | If we want to use a POJO request as body or not | false | boolean
| *proxyHost* (producer) | To define a proxy host when instantiating the Eventbridge client |  | String
| *proxyPort* (producer) | To define a proxy port when instantiating the Eventbridge client |  | Integer
| *proxyProtocol* (producer) | To define a proxy protocol when instantiating the Eventbridge client. There are 2 enums and the value can be one of: HTTP, HTTPS | HTTPS | Protocol
| *region* (producer) | The region in which 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() |  | String
| *trustAllCertificates* (producer) | If we want to trust all certificates in case of overriding the endpoint | false | boolean
| *uriEndpointOverride* (producer) | Set the overriding uri endpoint. This option needs to be used in combination with overrideEndpoint option |  | String
| *useDefaultCredentialsProvider* (producer) | 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
| *accessKey* (security) | Amazon AWS Access Key |  | String
| *secretKey* (security) | Amazon AWS Secret Key |  | String
|===
// endpoint options: END


=== 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 https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/credentials.html[AWS credentials documentation]

=== 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

- PutRule: this operation create a rule related to an eventbus

[source,java]
--------------------------------------------------------------------------------
  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 

[source,java]
--------------------------------------------------------------------------------
  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 target from the rule 

[source,java]
--------------------------------------------------------------------------------
  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

[source,java]
--------------------------------------------------------------------------------
  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

[source,java]
--------------------------------------------------------------------------------
  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

[source,java]
--------------------------------------------------------------------------------
  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

[source,java]
--------------------------------------------------------------------------------
  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

[source,java]
--------------------------------------------------------------------------------
  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

[source,java]
--------------------------------------------------------------------------------
  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 rule associated with a target

[source,java]
--------------------------------------------------------------------------------
  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 rule associated with a target.

== Updating the rule

To update a rule you'll need to perform the putRule operation again. 
There is not explicit update rule operation in the Java SDK.

== Dependencies

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

*pom.xml*

[source,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.


include::spring-boot:partial$starter.adoc[]
