Module: MovableInk::AWS::SNS

Included in:
MovableInk::AWS
Defined in:
lib/movable_ink/aws/sns.rb

Instance Method Summary collapse

Instance Method Details

#add_subject_info(subject:) ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 79

def add_subject_info(subject:)
  required_info = " (#{instance_id}, #{my_region})"
  "#{subject.slice(0, 99-required_info.length)}#{required_info}"
end

#notify_and_sleep(seconds, error_class) ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 32

def notify_and_sleep(seconds, error_class)
  message = "Throttled by AWS. Sleeping #{seconds} seconds, (#{error_class})"
  notify_slack(subject: 'API Throttled',
               message: message)
  puts message
  sleep seconds
end

#notify_nsq_can_not_be_drained ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 40

def notify_nsq_can_not_be_drained
  notify_slack(subject: 'NSQ not drained',
               message: "Unable to drain NSQ for instance <https://#{my_region}.console.aws.amazon.com/ec2/v2/home?region=#{my_region}#Instances:search=#{instance_id};sort=instanceId|#{instance_id}>")
  notify_pagerduty(region: my_region, instance_id: instance_id)
end

#notify_pagerduty(region:, instance_id:) ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 46

def notify_pagerduty(region:, instance_id:)
  summary = "Unable to drain NSQ for instance #{instance_id} in region #{region}"

  # the PagerDuty integration key is added to the payload in the AWS integration
  json_message = {
    pagerduty: {
      event_action: 'trigger',
      payload: {
        source: 'MovableInkAWS',
        summary: summary,
        timestamp: Time.now.utc.iso8601,
        severity: 'error',
        component: 'nsq',
        group: 'nsq',
        custom_details: {
          InstanceId: instance_id,
        },
      },
      dedup_key: "nsq-not-draining-#{instance_id}",
      links: [{
        href: "https://#{region}.console.aws.amazon.com/ec2/v2/home?region=#{region}#Instances:search=#{instance_id};sort=instanceId",
        text: 'View Instance'
      }],
    }
  }.to_json

  run_with_backoff do
    sns.publish(topic_arn: sns_pagerduty_topic_arn,
                subject: add_subject_info(subject: "Unable to drain NSQ"),
                message: json_message)
  end
end

#notify_slack(subject:, message:) ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 84

def notify_slack(subject:, message:)
  run_with_backoff do
    sns.publish(topic_arn: sns_slack_topic_arn,
                subject: add_subject_info(subject: subject),
                message: message)
  end
end

#sns(region: my_region) ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 7

def sns(region: my_region)
  @sns_client ||= {}
  @sns_client[region] ||= Aws::SNS::Client.new(region: region)
end

#sns_pagerduty_topic_arn ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 22

def sns_pagerduty_topic_arn
  run_with_backoff do
    sns.list_topics.each do |resp|
      resp.topics.each do |topic|
        return topic.topic_arn if topic.topic_arn.include? "pagerduty-custom-alerts"
      end
    end
  end
end

#sns_slack_topic_arn ⇒ Object 



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# File 'lib/movable_ink/aws/sns.rb', line 12

def sns_slack_topic_arn
  run_with_backoff do
    sns.list_topics.each do |resp|
      resp.topics.each do |topic|
        return topic.topic_arn if topic.topic_arn.include? "slack-aws-alerts"
      end
    end
  end
end