Class: LogStash::Outputs::AzureLogAnalytics

Inherits:
Base
  • Object
show all
Includes:
Stud::Buffer
Defined in:
lib/logstash/outputs/azure_loganalytics.rb

Instance Method Summary collapse

Instance Method Details

#flush(events, close = false) ⇒ Object 



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# File 'lib/logstash/outputs/azure_loganalytics.rb', line 85

def flush (events, close=false)

  documents = []  #this is the array of hashes to add Azure Log Analytics
  events.each do |event|
    document = {}
    event_hash = event.to_hash()
    if @key_names.length > 0
      # Get the intersection of key_names and keys of event_hash
      keys_intersection = @key_names & event_hash.keys
      keys_intersection.each do |key|
        if @key_types.include?(key)
          document[key] = convert_value(@key_types[key], event_hash[key])
        else
          document[key] = event_hash[key]
        end
      end
    else
      document = event_hash
    end
    # Skip if document doesn't contain any items
    next if (document.keys).length < 1

    documents.push(document)
  end

  # Skip in case there are no candidate documents to deliver
  if documents.length < 1
    @logger.debug("No documents in batch for log type #{@log_type}. Skipping")
    return
  end

  begin
    @logger.debug("Posting log batch (log count: #{documents.length}) as log type #{@log_type} to DataCollector API. First log: " + (documents[0].to_json).to_s)
    res = @client.post_data(@log_type, documents, @time_generated_field)
    if Azure::Loganalytics::Datacollectorapi::Client.is_success(res)
      @logger.debug("Successfully posted logs as log type #{@log_type} with result code #{res.code} to DataCollector API")
    else
      @logger.error("DataCollector API request failure: error code: #{res.code}, data=>" + (documents.to_json).to_s)
    end
  rescue Exception => ex
    @logger.error("Exception occured in posting to DataCollector API: '#{ex}', data=>" + (documents.to_json).to_s)
  end
end

#receive(event) ⇒ Object 



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# File 'lib/logstash/outputs/azure_loganalytics.rb', line 77

def receive(event)
  @log_type = event.sprintf(@log_type)
  # Simply save an event for later delivery
  buffer_receive(event)
end

#register ⇒ Object 



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# File 'lib/logstash/outputs/azure_loganalytics.rb', line 51

def register
  require 'azure/loganalytics/datacollectorapi/client'

  #if not @log_type.match(/^[[:alpha:]]+$/)
  #  raise ArgumentError, 'log_type must be only alpha characters' 
  #end

  @key_types.each { |k, v|
    t = v.downcase
    if ( !t.eql?('string') && !t.eql?('double') && !t.eql?('boolean') ) 
      raise ArgumentError, "Key type(#{v}) for key(#{k}) must be either string, boolean, or double"
    end
  }

  ## Start 
  @client=Azure::Loganalytics::Datacollectorapi::Client::new(@customer_id,@shared_key,@endpoint)

  buffer_initialize(
    :max_items => @flush_items,
    :max_interval => @flush_interval_time,
    :logger => @logger
  )

end