Sending Messages in Amazon SQS

The following example sends the message “Hello world” through the Amazon SQS queue with the URL URL in the us-west-2 region.

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

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

# Sends a message to 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 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-east-1'),
#     'https://sqs.us-east-1.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:
def run_me
  region = 'us-east-1'
  queue_name = 'my-queue'
  message_body = 'This is my message.'

  sts_client = Aws::STS::Client.new(region: region)
  
  # For example:
  # 'https://sqs.us-east-1.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

run_me if $PROGRAM_NAME == __FILE__

The following example sends the messages “Hello world” and “How is the weather?” through the Amazon SQS queue with the URL URL in the us-west-2 region.

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

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

# Sends multiple messages as a batch to 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 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-east-1'),
#     'https://sqs.us-east-1.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:
def run_me
  region = 'us-east-1'
  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-east-1.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

run_me if $PROGRAM_NAME == __FILE__