Ruby AWS cloudwatch put log event example

aws_cloudwatch_log.rb

environment = 'test'
project_id = rand(1...10000)

group_name = "bulk-mail"
stream_name = "#{environment}-#{project_id}"

region = 'ap-northeast-1'
client = Aws::CloudWatchLogs::Client.new(region: region)

result = client.create_log_stream({
  log_group_name: group_name,
  log_stream_name: stream_name
})
  


5.times do

  message = {
    user_id: rand(1...10000)
  }
    
  begin
    event = {
      log_group_name: group_name,
      log_stream_name: stream_name,
      log_events: [{
        timestamp: (Time.now.utc.to_f.round(3)*1000).to_i,
        message: message.to_json
      }]
    }
      
    if token = @sequence_token
      event[:sequence_token] = token
    end


    response = client.put_log_events(event)

    unless response.rejected_log_events_info.nil?
      raise CloudWatchLogger::LogEventRejected
    end
    @sequence_token = response.next_sequence_token
  
  
  rescue Aws::CloudWatchLogs::Errors::ResourceNotFoundException => err
    resp = client.create_log_stream({
      log_group_name: group_name,
      log_stream_name: stream_name,
    })
    retry
  rescue Aws::CloudWatchLogs::Errors::InvalidSequenceTokenException => err
    @sequence_token = err.message.split(' ').last
    retry
  end
end

Gemfile

gem 'aws-sdk-cloudwatchlogs'