There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Code examples for Elastic Beanstalk using AWS SDKs
<a name="elastic-beanstalk_code_examples"></a>

The following code examples show you how to use AWS Elastic Beanstalk with an AWS software development kit (SDK).

*Actions* are code excerpts from larger programs and must be run in context. While actions show you how to call individual service functions, you can see actions in context in their related scenarios.

**More resources**
+  **[ Elastic Beanstalk Developer Guide](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/Welcome.html)** – More information about Elastic Beanstalk.
+ **[Elastic Beanstalk API Reference](https://docs.aws.amazon.com/elasticbeanstalk/latest/api/Welcome.html)** – Details about all available Elastic Beanstalk actions.
+ **[AWS Developer Center](https://aws.amazon.com/developer/code-examples/?awsf.sdk-code-examples-product=product%23)** – Code examples that you can filter by category or full-text search.
+ **[AWS SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples)** – GitHub repo with complete code in preferred languages. Includes instructions for setting up and running the code.

**Contents**
+ [Basics](elastic-beanstalk_code_examples_basics.md)
  + [Actions](elastic-beanstalk_code_examples_actions.md)
    + [`DescribeApplications`](elastic-beanstalk_example_elastic-beanstalk_DescribeApplications_section.md)
    + [`ListAvailableSolutionStacks`](elastic-beanstalk_example_elastic-beanstalk_ListAvailableSolutionStacks_section.md)
    + [`UpdateApplication`](elastic-beanstalk_example_elastic-beanstalk_UpdateApplication_section.md)

# Basic examples for Elastic Beanstalk using AWS SDKs
<a name="elastic-beanstalk_code_examples_basics"></a>

The following code examples show how to use the basics of AWS Elastic Beanstalk with AWS SDKs. 

**Contents**
+ [Actions](elastic-beanstalk_code_examples_actions.md)
  + [`DescribeApplications`](elastic-beanstalk_example_elastic-beanstalk_DescribeApplications_section.md)
  + [`ListAvailableSolutionStacks`](elastic-beanstalk_example_elastic-beanstalk_ListAvailableSolutionStacks_section.md)
  + [`UpdateApplication`](elastic-beanstalk_example_elastic-beanstalk_UpdateApplication_section.md)

# Actions for Elastic Beanstalk using AWS SDKs
<a name="elastic-beanstalk_code_examples_actions"></a>

The following code examples demonstrate how to perform individual Elastic Beanstalk actions with AWS SDKs. Each example includes a link to GitHub, where you can find instructions for setting up and running the code. 

 The following examples include only the most commonly used actions. For a complete list, see the [AWS Elastic Beanstalk API Reference](https://docs.aws.amazon.com/elasticbeanstalk/latest/api/Welcome.html). 

**Topics**
+ [`DescribeApplications`](elastic-beanstalk_example_elastic-beanstalk_DescribeApplications_section.md)
+ [`ListAvailableSolutionStacks`](elastic-beanstalk_example_elastic-beanstalk_ListAvailableSolutionStacks_section.md)
+ [`UpdateApplication`](elastic-beanstalk_example_elastic-beanstalk_UpdateApplication_section.md)

# Use `DescribeApplications` with an AWS SDK or CLI
<a name="elastic-beanstalk_example_elastic-beanstalk_DescribeApplications_section"></a>

The following code examples show how to use `DescribeApplications`.

------
#### [ CLI ]

**AWS CLI**  
**To view a list of applications**  
The following command retrieves information about applications in the current region:  

```
aws elasticbeanstalk describe-applications
```
Output:  

```
{
    "Applications": [
        {
            "ApplicationName": "ruby",
            "ConfigurationTemplates": [],
            "DateUpdated": "2015-08-13T21:05:44.376Z",
            "Versions": [
                "Sample Application"
            ],
            "DateCreated": "2015-08-13T21:05:44.376Z"
        },
        {
            "ApplicationName": "pythonsample",
            "Description": "Application created from the EB CLI using \"eb init\"",
            "Versions": [
                "Sample Application"
            ],
            "DateCreated": "2015-08-13T19:05:43.637Z",
            "ConfigurationTemplates": [],
            "DateUpdated": "2015-08-13T19:05:43.637Z"
        },
        {
            "ApplicationName": "nodejs-example",
            "ConfigurationTemplates": [],
            "DateUpdated": "2015-08-06T17:50:02.486Z",
            "Versions": [
                "add elasticache",
                "First Release"
            ],
            "DateCreated": "2015-08-06T17:50:02.486Z"
        }
    ]
}
```
+  For API details, see [DescribeApplications](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/elasticbeanstalk/describe-applications.html) in *AWS CLI Command Reference*. 

------
#### [ Ruby ]

**SDK for Ruby**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/elasticbeanstalk#code-examples). 

```
# Class to manage Elastic Beanstalk applications
class ElasticBeanstalkManager
  def initialize(eb_client, logger: Logger.new($stdout))
    @eb_client = eb_client
    @logger = logger
  end

  # Lists applications and their environments
  def list_applications
    @eb_client.describe_applications.applications.each do |application|
      log_application_details(application)
      list_environments(application.application_name)
    end
  rescue Aws::ElasticBeanstalk::Errors::ServiceError => e
    @logger.error("Elastic Beanstalk Service Error: #{e.message}")
  end

  private

  # Logs application details
  def log_application_details(application)
    @logger.info("Name:        #{application.application_name}")
    @logger.info("Description: #{application.description}")
  end

  # Lists and logs details of environments for a given application
  def list_environments(application_name)
    @eb_client.describe_environments(application_name: application_name).environments.each do |env|
      @logger.info("  Environment:  #{env.environment_name}")
      @logger.info("    URL:        #{env.cname}")
      @logger.info("    Health:     #{env.health}")
    end
  rescue Aws::ElasticBeanstalk::Errors::ServiceError => e
    @logger.error("Error listing environments for application #{application_name}: #{e.message}")
  end
end
```
+  For API details, see [DescribeApplications](https://docs.aws.amazon.com/goto/SdkForRubyV3/elastic-beanstalk-2010-12-01/DescribeApplications) in *AWS SDK for Ruby API Reference*. 

------

# Use `ListAvailableSolutionStacks` with an AWS SDK or CLI
<a name="elastic-beanstalk_example_elastic-beanstalk_ListAvailableSolutionStacks_section"></a>

The following code examples show how to use `ListAvailableSolutionStacks`.

------
#### [ CLI ]

**AWS CLI**  
**To view solution stacks**  
The following command lists solution stacks for all currently available platform configurations and any that you have used in the past:  

```
aws elasticbeanstalk list-available-solution-stacks
```
Output (abbreviated):  

```
{
    "SolutionStacks": [
        "64bit Amazon Linux 2015.03 v2.0.0 running Node.js",
        "64bit Amazon Linux 2015.03 v2.0.0 running PHP 5.6",
        "64bit Amazon Linux 2015.03 v2.0.0 running PHP 5.5",
        "64bit Amazon Linux 2015.03 v2.0.0 running PHP 5.4",
        "64bit Amazon Linux 2015.03 v2.0.0 running Python 3.4",
        "64bit Amazon Linux 2015.03 v2.0.0 running Python 2.7",
        "64bit Amazon Linux 2015.03 v2.0.0 running Python",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 2.2 (Puma)",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 2.2 (Passenger Standalone)",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 2.1 (Puma)",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 2.1 (Passenger Standalone)",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 2.0 (Puma)",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 2.0 (Passenger Standalone)",
        "64bit Amazon Linux 2015.03 v2.0.0 running Ruby 1.9.3",
        "64bit Amazon Linux 2015.03 v2.0.0 running Tomcat 8 Java 8",
        "64bit Amazon Linux 2015.03 v2.0.0 running Tomcat 7 Java 7",
        "64bit Amazon Linux 2015.03 v2.0.0 running Tomcat 7 Java 6",
        "64bit Windows Server Core 2012 R2 running IIS 8.5",
        "64bit Windows Server 2012 R2 running IIS 8.5",
        "64bit Windows Server 2012 running IIS 8",
        "64bit Windows Server 2008 R2 running IIS 7.5",
        "64bit Amazon Linux 2015.03 v2.0.0 running Docker 1.6.2",
        "64bit Amazon Linux 2015.03 v2.0.0 running Multi-container Docker 1.6.2 (Generic)",
        "64bit Debian jessie v2.0.0 running GlassFish 4.1 Java 8 (Preconfigured - Docker)",
        "64bit Debian jessie v2.0.0 running GlassFish 4.0 Java 7 (Preconfigured - Docker)",
        "64bit Debian jessie v2.0.0 running Go 1.4 (Preconfigured - Docker)",
        "64bit Debian jessie v2.0.0 running Go 1.3 (Preconfigured - Docker)",
        "64bit Debian jessie v2.0.0 running Python 3.4 (Preconfigured - Docker)",
    ],
    "SolutionStackDetails": [
        {
            "PermittedFileTypes": [
                "zip"
            ],
            "SolutionStackName": "64bit Amazon Linux 2015.03 v2.0.0 running Node.js"
        },
        ...
    ]
}
```
+  For API details, see [ListAvailableSolutionStacks](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/elasticbeanstalk/list-available-solution-stacks.html) in *AWS CLI Command Reference*. 

------
#### [ Ruby ]

**SDK for Ruby**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/elasticbeanstalk#code-examples). 

```
# Manages listing of AWS Elastic Beanstalk solution stacks
# @param [Aws::ElasticBeanstalk::Client] eb_client
# @param [String] filter - Returns subset of results based on match
# @param [Logger] logger
class StackLister
  # Initialize with AWS Elastic Beanstalk client
  def initialize(eb_client, filter, logger: Logger.new($stdout))
    @eb_client = eb_client
    @filter = filter.downcase
    @logger = logger
  end

  # Lists and logs Elastic Beanstalk solution stacks
  def list_stacks
    stacks = @eb_client.list_available_solution_stacks.solution_stacks
    orig_length = stacks.length
    filtered_length = 0

    stacks.each do |stack|
      if @filter.empty? || stack.downcase.include?(@filter)
        @logger.info(stack)
        filtered_length += 1
      end
    end

    log_summary(filtered_length, orig_length)
  rescue Aws::Errors::ServiceError => e
    @logger.error("Error listing solution stacks: #{e.message}")
  end

  private

  # Logs summary of listed stacks
  def log_summary(filtered_length, orig_length)
    if @filter.empty?
      @logger.info("Showed #{orig_length} stack(s)")
    else
      @logger.info("Showed #{filtered_length} stack(s) of #{orig_length}")
    end
  end
end
```
+  For API details, see [ListAvailableSolutionStacks](https://docs.aws.amazon.com/goto/SdkForRubyV3/elastic-beanstalk-2010-12-01/ListAvailableSolutionStacks) in *AWS SDK for Ruby API Reference*. 

------

# Use `UpdateApplication` with an AWS SDK or CLI
<a name="elastic-beanstalk_example_elastic-beanstalk_UpdateApplication_section"></a>

The following code examples show how to use `UpdateApplication`.

------
#### [ CLI ]

**AWS CLI**  
**To change an application's description**  
The following command updates the description of an application named `my-app`:  

```
aws elasticbeanstalk update-application --application-name my-app --description "my Elastic Beanstalk application"
```
Output:  

```
{
    "Application": {
        "ApplicationName": "my-app",
        "Description": "my Elastic Beanstalk application",
        "Versions": [
            "2fba-stage-150819_234450",
            "bf07-stage-150820_214945",
            "93f8",
            "fd7c-stage-150820_000431",
            "22a0-stage-150819_185942"
        ],
        "DateCreated": "2015-08-13T19:15:50.449Z",
        "ConfigurationTemplates": [],
        "DateUpdated": "2015-08-20T22:34:56.195Z"
    }
}
```
+  For API details, see [UpdateApplication](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/elasticbeanstalk/update-application.html) in *AWS CLI Command Reference*. 

------
#### [ Ruby ]

**SDK for Ruby**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/elasticbeanstalk#code-examples). 

```
# Manages deployment of Rails applications to AWS Elastic Beanstalk
class RailsAppDeployer
  def initialize(eb_client, s3_client, app_name, logger: Logger.new($stdout))
    @eb_client = eb_client
    @s3_client = s3_client
    @app_name = app_name
    @logger = logger
  end

  # Deploys the latest application version to Elastic Beanstalk
  def deploy
    create_storage_location
    zip_file_name = create_zip_file
    upload_zip_to_s3(zip_file_name)
    create_and_deploy_new_application_version(zip_file_name)
  end

  private

  # Creates a new S3 storage location for the application
  def create_storage_location
    resp = @eb_client.create_storage_location
    @logger.info("Created storage location in bucket #{resp.s3_bucket}")
  rescue Aws::Errors::ServiceError => e
    @logger.error("Failed to create storage location: #{e.message}")
  end

  # Creates a ZIP file of the application using git
  def create_zip_file
    zip_file_basename = SecureRandom.urlsafe_base64
    zip_file_name = "#{zip_file_basename}.zip"
    `git archive --format=zip -o #{zip_file_name} HEAD`
    zip_file_name
  end

  # Uploads the ZIP file to the S3 bucket
  def upload_zip_to_s3(zip_file_name)
    zip_contents = File.read(zip_file_name)
    key = "#{@app_name}/#{zip_file_name}"
    @s3_client.put_object(body: zip_contents, bucket: fetch_bucket_name, key: key)
  rescue Aws::Errors::ServiceError => e
    @logger.error("Failed to upload ZIP file to S3: #{e.message}")
  end

  # Fetches the S3 bucket name from Elastic Beanstalk application versions
  def fetch_bucket_name
    app_versions = @eb_client.describe_application_versions(application_name: @app_name)
    av = app_versions.application_versions.first
    av.source_bundle.s3_bucket
  rescue Aws::Errors::ServiceError => e
    @logger.error("Failed to fetch bucket name: #{e.message}")
    raise
  end

  # Creates a new application version and deploys it
  def create_and_deploy_new_application_version(zip_file_name)
    version_label = File.basename(zip_file_name, '.zip')
    @eb_client.create_application_version(
      process: false,
      application_name: @app_name,
      version_label: version_label,
      source_bundle: {
        s3_bucket: fetch_bucket_name,
        s3_key: "#{@app_name}/#{zip_file_name}"
      },
      description: "Updated #{Time.now.strftime('%d/%m/%Y')}"
    )
    update_environment(version_label)
  rescue Aws::Errors::ServiceError => e
    @logger.error("Failed to create or deploy application version: #{e.message}")
  end

  # Updates the environment to the new application version
  def update_environment(version_label)
    env_name = fetch_environment_name
    @eb_client.update_environment(
      environment_name: env_name,
      version_label: version_label
    )
  rescue Aws::Errors::ServiceError => e
    @logger.error("Failed to update environment: #{e.message}")
  end

  # Fetches the environment name of the application
  def fetch_environment_name
    envs = @eb_client.describe_environments(application_name: @app_name)
    envs.environments.first.environment_name
  rescue Aws::Errors::ServiceError => e
    @logger.error("Failed to fetch environment name: #{e.message}")
    raise
  end
end
```
+  For API details, see [UpdateApplication](https://docs.aws.amazon.com/goto/SdkForRubyV3/elastic-beanstalk-2010-12-01/UpdateApplication) in *AWS SDK for Ruby API Reference*. 

------