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# Contoh Amazon SQS menggunakan SDK for Ruby
<a name="ruby_sqs_code_examples"></a>

Contoh kode berikut menunjukkan cara melakukan tindakan dan menerapkan skenario umum dengan menggunakan Amazon SQS. AWS SDK untuk Ruby 

*Tindakan* merupakan kutipan kode dari program yang lebih besar dan harus dijalankan dalam konteks. Sementara tindakan menunjukkan cara memanggil fungsi layanan individual, Anda dapat melihat tindakan dalam konteks dalam skenario terkait.

Setiap contoh menyertakan tautan ke kode sumber lengkap, di mana Anda dapat menemukan instruksi tentang cara mengatur dan menjalankan kode dalam konteks.

**Topics**
+ [Tindakan](#actions)
+ [Contoh nirserver](#serverless_examples)

## Tindakan
<a name="actions"></a>

### `ChangeMessageVisibility`
<a name="sqs_ChangeMessageVisibility_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`ChangeMessageVisibility`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
require 'aws-sdk-sqs' # v2: require 'aws-sdk'
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
sqs = Aws::SQS::Client.new(region: 'us-west-2')

begin
  queue_name = 'my-queue'
  queue_url = sqs.get_queue_url(queue_name: queue_name).queue_url

  # Receive up to 10 messages
  receive_message_result_before = sqs.receive_message({
                                                        queue_url: queue_url,
                                                        max_number_of_messages: 10
                                                      })

  puts "Before attempting to change message visibility timeout: received #{receive_message_result_before.messages.count} message(s)."

  receive_message_result_before.messages.each do |message|
    sqs.change_message_visibility({
                                    queue_url: queue_url,
                                    receipt_handle: message.receipt_handle,
                                    visibility_timeout: 30 # This message will not be visible for 30 seconds after first receipt.
                                  })
  end

  # Try to retrieve the original messages after setting their visibility timeout.
  receive_message_result_after = sqs.receive_message({
                                                       queue_url: queue_url,
                                                       max_number_of_messages: 10
                                                     })

  puts "\nAfter attempting to change message visibility timeout: received #{receive_message_result_after.messages.count} message(s)."
rescue Aws::SQS::Errors::NonExistentQueue
  puts "Cannot receive messages for a queue named '#{queue_name}', as it does not exist."
end
```
+  Untuk detail API, lihat [ChangeMessageVisibility](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/ChangeMessageVisibility)di *Referensi AWS SDK untuk Ruby API*. 

### `CreateQueue`
<a name="sqs_CreateQueue_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`CreateQueue`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
# This code example demonstrates how to create a queue in Amazon Simple Queue Service (Amazon SQS).

require 'aws-sdk-sqs'

# @param sqs_client [Aws::SQS::Client] An initialized Amazon SQS client.
# @param queue_name [String] The name of the queue.
# @return [Boolean] true if the queue was created; otherwise, false.
# @example
#   exit 1 unless queue_created?(
#     Aws::SQS::Client.new(region: 'us-west-2'),
#     'my-queue'
#   )
def queue_created?(sqs_client, queue_name)
  sqs_client.create_queue(queue_name: queue_name)
  true
rescue StandardError => e
  puts "Error creating queue: #{e.message}"
  false
end

# Full example call:
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
def run_me
  region = 'us-west-2'
  queue_name = 'my-queue'
  sqs_client = Aws::SQS::Client.new(region: region)

  puts "Creating the queue named '#{queue_name}'..."

  if queue_created?(sqs_client, queue_name)
    puts 'Queue created.'
  else
    puts 'Queue not created.'
  end
end

# Example usage:
run_me if $PROGRAM_NAME == __FILE__
```
+  Untuk detail API, lihat [CreateQueue](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/CreateQueue)di *Referensi AWS SDK untuk Ruby API*. 

### `DeleteQueue`
<a name="sqs_DeleteQueue_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`DeleteQueue`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
require 'aws-sdk-sqs' # v2: require 'aws-sdk'
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
sqs = Aws::SQS::Client.new(region: 'us-west-2')

sqs.delete_queue(queue_url: URL)
```
+  Untuk detail API, lihat [DeleteQueue](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/DeleteQueue)di *Referensi AWS SDK untuk Ruby API*. 

### `ListQueues`
<a name="sqs_ListQueues_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`ListQueues`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
require 'aws-sdk-sqs'
require 'aws-sdk-sts'

# @param sqs_client [Aws::SQS::Client] An initialized Amazon SQS client.
# @example
#   list_queue_urls(Aws::SQS::Client.new(region: 'us-west-2'))
def list_queue_urls(sqs_client)
  queues = sqs_client.list_queues

  queues.queue_urls.each do |url|
    puts url
  end
rescue StandardError => e
  puts "Error listing queue URLs: #{e.message}"
end

# Lists the attributes of a queue in Amazon Simple Queue Service (Amazon SQS).
#
# @param sqs_client [Aws::SQS::Client] An initialized Amazon SQS client.
# @param queue_url [String] The URL of the queue.
# @example
#   list_queue_attributes(
#     Aws::SQS::Client.new(region: 'us-west-2'),
#     'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue'
#   )
def list_queue_attributes(sqs_client, queue_url)
  attributes = sqs_client.get_queue_attributes(
    queue_url: queue_url,
    attribute_names: ['All']
  )

  attributes.attributes.each do |key, value|
    puts "#{key}: #{value}"
  end
rescue StandardError => e
  puts "Error getting queue attributes: #{e.message}"
end

# Full example call:
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
def run_me
  region = 'us-west-2'
  queue_name = 'my-queue'

  sqs_client = Aws::SQS::Client.new(region: region)

  puts 'Listing available queue URLs...'
  list_queue_urls(sqs_client)

  sts_client = Aws::STS::Client.new(region: region)

  # For example:
  # 'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue'
  queue_url = "https://sqs.#{region}.amazonaws.com/#{sts_client.get_caller_identity.account}/#{queue_name}"

  puts "\nGetting information about queue '#{queue_name}'..."
  list_queue_attributes(sqs_client, queue_url)
end
```
+  Untuk detail API, lihat [ListQueues](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/ListQueues)di *Referensi AWS SDK untuk Ruby API*. 

### `ReceiveMessage`
<a name="sqs_ReceiveMessage_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`ReceiveMessage`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
require 'aws-sdk-sqs'
require 'aws-sdk-sts'

# Receives messages in a queue in Amazon Simple Queue Service (Amazon SQS).
#
# @param sqs_client [Aws::SQS::Client] An initialized Amazon SQS client.
# @param queue_url [String] The URL of the queue.
# @param max_number_of_messages [Integer] The maximum number of messages
#   to receive. This number must be 10 or less. The default is 10.
# @example
#   receive_messages(
#     Aws::SQS::Client.new(region: 'us-west-2'),
#     'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue',
#     10
#   )
def receive_messages(sqs_client, queue_url, max_number_of_messages = 10)
  if max_number_of_messages > 10
    puts 'Maximum number of messages to receive must be 10 or less. ' \
      'Stopping program.'
    return
  end

  response = sqs_client.receive_message(
    queue_url: queue_url,
    max_number_of_messages: max_number_of_messages
  )

  if response.messages.count.zero?
    puts 'No messages to receive, or all messages have already ' \
      'been previously received.'
    return
  end

  response.messages.each do |message|
    puts '-' * 20
    puts "Message body: #{message.body}"
    puts "Message ID:   #{message.message_id}"
  end
rescue StandardError => e
  puts "Error receiving messages: #{e.message}"
end

# Full example call:
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
def run_me
  region = 'us-west-2'
  queue_name = 'my-queue'
  max_number_of_messages = 10

  sts_client = Aws::STS::Client.new(region: region)

  # For example:
  # 'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue'
  queue_url = "https://sqs.#{region}.amazonaws.com/#{sts_client.get_caller_identity.account}/#{queue_name}"

  sqs_client = Aws::SQS::Client.new(region: region)

  puts "Receiving messages from queue '#{queue_name}'..."

  receive_messages(sqs_client, queue_url, max_number_of_messages)
end

# Example usage:
run_me if $PROGRAM_NAME == __FILE__
```
+  Untuk detail API, lihat [ReceiveMessage](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/ReceiveMessage)di *Referensi AWS SDK untuk Ruby API*. 

### `SendMessage`
<a name="sqs_SendMessage_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`SendMessage`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
require 'aws-sdk-sqs'
require 'aws-sdk-sts'

# @param sqs_client [Aws::SQS::Client] An initialized Amazon SQS client.
# @param queue_url [String] The URL of the queue.
# @param message_body [String] The contents of the message to be sent.
# @return [Boolean] true if the message was sent; otherwise, false.
# @example
#   exit 1 unless message_sent?(
#     Aws::SQS::Client.new(region: 'us-west-2'),
#     'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue',
#     'This is my message.'
#   )
def message_sent?(sqs_client, queue_url, message_body)
  sqs_client.send_message(
    queue_url: queue_url,
    message_body: message_body
  )
  true
rescue StandardError => e
  puts "Error sending message: #{e.message}"
  false
end

# Full example call:
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
def run_me
  region = 'us-west-2'
  queue_name = 'my-queue'
  message_body = 'This is my message.'

  sts_client = Aws::STS::Client.new(region: region)

  # For example:
  # 'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue'
  queue_url = "https://sqs.#{region}.amazonaws.com/#{sts_client.get_caller_identity.account}/#{queue_name}"

  sqs_client = Aws::SQS::Client.new(region: region)

  puts "Sending a message to the queue named '#{queue_name}'..."

  if message_sent?(sqs_client, queue_url, message_body)
    puts 'Message sent.'
  else
    puts 'Message not sent.'
  end
end

# Example usage:
run_me if $PROGRAM_NAME == __FILE__
```
+  Untuk detail API, lihat [SendMessage](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/SendMessage)di *Referensi AWS SDK untuk Ruby API*. 

### `SendMessageBatch`
<a name="sqs_SendMessageBatch_ruby_topic"></a>

Contoh kode berikut menunjukkan cara menggunakan`SendMessageBatch`.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di [Repositori Contoh Kode AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/sqs#code-examples). 

```
require 'aws-sdk-sqs'
require 'aws-sdk-sts'

#
# @param sqs_client [Aws::SQS::Client] An initialized Amazon SQS client.
# @param queue_url [String] The URL of the queue.
# @param entries [Hash] The contents of the messages to be sent,
#   in the correct format.
# @return [Boolean] true if the messages were sent; otherwise, false.
# @example
#   exit 1 unless messages_sent?(
#     Aws::SQS::Client.new(region: 'us-west-2'),
#     'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue',
#     [
#       {
#         id: 'Message1',
#         message_body: 'This is the first message.'
#       },
#       {
#         id: 'Message2',
#         message_body: 'This is the second message.'
#       }
#     ]
#   )
def messages_sent?(sqs_client, queue_url, entries)
  sqs_client.send_message_batch(
    queue_url: queue_url,
    entries: entries
  )
  true
rescue StandardError => e
  puts "Error sending messages: #{e.message}"
  false
end

# Full example call:
# Replace us-west-2 with the AWS Region you're using for Amazon SQS.
def run_me
  region = 'us-west-2'
  queue_name = 'my-queue'
  entries = [
    {
      id: 'Message1',
      message_body: 'This is the first message.'
    },
    {
      id: 'Message2',
      message_body: 'This is the second message.'
    }
  ]

  sts_client = Aws::STS::Client.new(region: region)

  # For example:
  # 'https://sqs.us-west-2.amazonaws.com/111111111111/my-queue'
  queue_url = "https://sqs.#{region}.amazonaws.com/#{sts_client.get_caller_identity.account}/#{queue_name}"

  sqs_client = Aws::SQS::Client.new(region: region)

  puts "Sending messages to the queue named '#{queue_name}'..."

  if messages_sent?(sqs_client, queue_url, entries)
    puts 'Messages sent.'
  else
    puts 'Messages not sent.'
  end
end
```
+  Untuk detail API, lihat [SendMessageBatch](https://docs.aws.amazon.com/goto/SdkForRubyV3/sqs-2012-11-05/SendMessageBatch)di *Referensi AWS SDK untuk Ruby API*. 

## Contoh nirserver
<a name="serverless_examples"></a>

### Memanggil fungsi Lambda dari pemicu Amazon SQS
<a name="serverless_SQS_Lambda_ruby_topic"></a>

Contoh kode berikut menunjukkan bagaimana menerapkan fungsi Lambda yang menerima peristiwa yang dipicu oleh menerima pesan dari antrian SQS. Fungsi mengambil pesan dari parameter peristiwa dan mencatat konten setiap pesan.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di repositori [contoh Nirserver](https://github.com/aws-samples/serverless-snippets/tree/main/integration-sqs-to-lambda). 
Mengkonsumsi acara SQS dengan Lambda menggunakan Ruby.  

```
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
def lambda_handler(event:, context:)
  event['Records'].each do |message|
    process_message(message)
  end
  puts "done"
end

def process_message(message)
  begin
    puts "Processed message #{message['body']}"
    # TODO: Do interesting work based on the new message
  rescue StandardError => err
    puts "An error occurred"
    raise err
  end
end
```

### Melaporkan kegagalan item batch untuk fungsi Lambda dengan pemicu Amazon SQS
<a name="serverless_SQS_Lambda_batch_item_failures_ruby_topic"></a>

Contoh kode berikut menunjukkan cara mengimplementasikan respons batch sebagian untuk fungsi Lambda yang menerima peristiwa dari antrian SQS. Fungsi melaporkan kegagalan item batch dalam respons, memberi sinyal ke Lambda untuk mencoba lagi pesan tersebut nanti.

**SDK untuk Ruby**  
 Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di repositori [contoh Nirserver](https://github.com/aws-samples/serverless-snippets/tree/main/integration-sqs-to-lambda-with-batch-item-handling). 
Melaporkan kegagalan item batch SQS dengan Lambda menggunakan Ruby.  

```
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
require 'json'

def lambda_handler(event:, context:)
  if event
    batch_item_failures = []
    sqs_batch_response = {}

    event["Records"].each do |record|
      begin
        # process message
      rescue StandardError => e
        batch_item_failures << {"itemIdentifier" => record['messageId']}
      end
    end

    sqs_batch_response["batchItemFailures"] = batch_item_failures
    return sqs_batch_response
  end
end
```