= AWS Elastic Compute Cloud (EC2) Component
:doctitle: AWS Elastic Compute Cloud (EC2)
:shortname: aws2-ec2
:artifactid: camel-aws2-ec2
:description: Manage AWS EC2 instances.
:since: 3.1
:supportlevel: Stable
:tabs-sync-option:
:component-header: Only producer is supported
//Manually maintained attributes
:group: AWS
:camel-spring-boot-name: aws2-ec2

*Since Camel {since}*

*{component-header}*

The AWS2 EC2 component supports the ability to create, run, start, stop and terminate
https://aws.amazon.com/ec2/[AWS EC2] instances.

Prerequisites

You must have a valid Amazon Web Services developer account, and be
signed up to use Amazon EC2. More information is available at
https://aws.amazon.com/ec2/[Amazon EC2].


== URI Format

-------------------------
aws2-ec2://label[?options]
-------------------------

You can append query options to the URI in the following format:

`?options=value&option2=value&...`

// component options: START
include::partial$component-configure-options.adoc[]
include::partial$component-endpoint-options.adoc[]
include::partial$component-endpoint-headers.adoc[]
// component options: END


Required EC2 component options

You have to provide the amazonEc2Client in the
Registry or your accessKey and secretKey to access
the https://aws.amazon.com/ec2/[Amazon EC2] service.

== Usage

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

=== Supported producer operations

- createAndRunInstances
- startInstances
- stopInstances
- terminateInstances
- describeInstances
- describeInstancesStatus
- rebootInstances
- monitorInstances
- unmonitorInstances
- createTags
- deleteTags

== Examples

=== Producer Examples

- createAndRunInstances: this operation will create an EC2 instance and run it

[source,java]
--------------------------------------------------------------------------------
from("direct:createAndRun")
     .setHeader(EC2Constants.IMAGE_ID, constant("ami-fd65ba94"))
     .setHeader(EC2Constants.INSTANCE_TYPE, constant(InstanceType.T2Micro))
     .setHeader(EC2Constants.INSTANCE_MIN_COUNT, constant("1"))
     .setHeader(EC2Constants.INSTANCE_MAX_COUNT, constant("1"))
     .to("aws2-ec2://TestDomain?accessKey=xxxx&secretKey=xxxx&operation=createAndRunInstances");
--------------------------------------------------------------------------------

- startInstances: this operation will start a list of EC2 instances

[source,java]
--------------------------------------------------------------------------------
from("direct:start")
     .process(new Processor() {
            @Override
            public void process(Exchange exchange) throws Exception {
                Collection<String> l = new ArrayList<>();
                l.add("myinstance");
                exchange.getIn().setHeader(AWS2EC2Constants.INSTANCES_IDS, l);
            }
        })
     .to("aws2-ec2://TestDomain?accessKey=xxxx&secretKey=xxxx&operation=startInstances");
--------------------------------------------------------------------------------

- stopInstances: this operation will stop a list of EC2 instances

[source,java]
--------------------------------------------------------------------------------
from("direct:stop")
     .process(new Processor() {
            @Override
            public void process(Exchange exchange) throws Exception {
                Collection<String> l = new ArrayList<>();
                l.add("myinstance");
                exchange.getIn().setHeader(AWS2EC2Constants.INSTANCES_IDS, l);
            }
        })
     .to("aws2-ec2://TestDomain?accessKey=xxxx&secretKey=xxxx&operation=stopInstances");
--------------------------------------------------------------------------------

- terminateInstances: this operation will terminate a list of EC2 instances

[source,java]
--------------------------------------------------------------------------------
from("direct:stop")
     .process(new Processor() {
            @Override
            public void process(Exchange exchange) throws Exception {
                Collection<String> l = new ArrayList<>();
                l.add("myinstance");
                exchange.getIn().setHeader(AWS2EC2Constants.INSTANCES_IDS, l);
            }
        })
     .to("aws2-ec2://TestDomain?accessKey=xxxx&secretKey=xxxx&operation=terminateInstances");
--------------------------------------------------------------------------------

=== Using a POJO as body

Sometimes building an AWS Request can be complex because of multiple options. We introduce the possibility to use a POJO as a body.
In AWS EC2 there are multiple operations you can submit, as an example for Create and run an instance, you can do something like:

[source,java]
------------------------------------------------------------------------------------------------------
from("direct:start")
  .setBody(RunInstancesRequest.builder().imageId("test-1").instanceType(InstanceType.T2_MICRO).build())
  .to("aws2-ec2://TestDomain?accessKey=xxxx&secretKey=xxxx&operation=createAndRunInstances&pojoRequest=true");
------------------------------------------------------------------------------------------------------

In this way, you'll pass the request directly without the need of passing headers and options specifically related to this operation.

== 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-ec2</artifactId>
    <version>${camel-version}</version>
</dependency>
---------------------------------------

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


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