Class: Ruboty::SqsMonitor::Aws::CloudWatch

Inherits:
Object
  • Object
show all
Defined in:
lib/ruboty/sqs_monitor/aws/cloudwatch.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(queue_name, options) ⇒ CloudWatch

Returns a new instance of CloudWatch.



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# File 'lib/ruboty/sqs_monitor/aws/cloudwatch.rb', line 7

def initialize(queue_name, options)
  @queue_name = queue_name
  @start_time = options[:start_time]
  @end_time   = options[:end_time]

  opts = options.select {|k, v| CLIENT_OPTIONS.include? k.to_sym }
  @client = ::Aws::CloudWatch::Client.new(opts)
end

Instance Attribute Details

#end_time ⇒ Object (readonly)

Returns the value of attribute end_time.



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# File 'lib/ruboty/sqs_monitor/aws/cloudwatch.rb', line 5

def end_time
  @end_time
end

#queue_name ⇒ Object (readonly)

Returns the value of attribute queue_name.



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# File 'lib/ruboty/sqs_monitor/aws/cloudwatch.rb', line 5

def queue_name
  @queue_name
end

#start_time ⇒ Object (readonly)

Returns the value of attribute start_time.



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# File 'lib/ruboty/sqs_monitor/aws/cloudwatch.rb', line 5

def start_time
  @start_time
end

Instance Method Details

#get_statistics(metric_name, stats: nil, start_time: nil, end_time: nil, period: nil) ⇒ Object 



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# File 'lib/ruboty/sqs_monitor/aws/cloudwatch.rb', line 16

def get_statistics(metric_name,
                   stats:      nil,
                   start_time: nil,
                   end_time:   nil,
                   period:     nil)
  stats      ||= default_stats(metric_name)
  end_time   ||= @end_time   || Time.now
  start_time ||= @start_time || (end_time - 3600)
  period     ||= end_time - start_time

  opts = {
    namespace:   "AWS/SQS",
    metric_name: metric_name,
    dimensions:  [ {name: "QueueName", value: @queue_name} ],
    start_time:  start_time,
    end_time:    end_time,
    period:      period.to_i,
    statistics:  [stats]
  }
  resp = @client.get_metric_statistics(opts)

  datapoints = default_datapoints(start_time, end_time, period)
  resp.datapoints.each do |datapoint|
    ts = datapoint.timestamp
    dp = datapoints[ts.to_i]
    dp.value = datapoint_to_value(datapoint)
    dp.unit  = datapoint.unit
    dp.freeze
  end

  OpenStruct.new(
    queue_name: @queue_name,
    start_time: start_time,
    end_time:   end_time,
    metric:     resp.label,
    stats:      stats,
    label:      "#{resp.label}(#{stats})",
    datapoints: datapoints.sort_by{|k,v| k}.map(&:last)
  ).freeze
end