Ruby AWS cloudwatch put log event example

aws_cloudwatch_log.rb

# AWS cloudwatch log document
# https://docs.aws.amazon.com/sdkforruby/api/Aws/CloudWatchLogs/Client.html#put_log_events-instance_method

group_name = "group_name" # cloudwatch log group name
stream_name = "stream_name"# cloudwatch log stream name
region = 'ap-southeast-1' #aws region
message = {
  url: "https://www.google.tw",
  time: "#{Time.now.getutc.to_i}"
}

client = Aws::CloudWatchLogs::Client.new(region: region)
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

Gemfile

gem 'aws-sdk-cloudwatchlogs'