Class: LogStash::Outputs::Kusto

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/outputs/kusto.rb,
lib/logstash/outputs/kusto/interval.rb,
lib/logstash/outputs/kusto/ingestor.rb

Overview

This plugin sends messages to Azure Kusto in batches.

Defined Under Namespace

Classes: Ingestor, Interval

Constant Summary collapse

FIELD_REF = 
/%\{[^}]+\}/

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#failure_path ⇒ Object (readonly)

Returns the value of attribute failure_path.



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# File 'lib/logstash/outputs/kusto.rb', line 19

def failure_path
  @failure_path
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/logstash/outputs/kusto.rb', line 197

def close
  @flusher.stop unless @flusher.nil?
  @cleaner.stop unless @cleaner.nil?
  @io_mutex.synchronize do
    @logger.debug('Close: closing files')

    @files.each do |path, fd|
      begin
        fd.close
        @logger.debug("Closed file #{path}", fd: fd)

        kusto_send_file(path)
      rescue Exception => e
        @logger.error('Exception while flushing and closing files.', exception: e)
      end
    end
  end

  @ingestor.stop unless @ingestor.nil?
end

#multi_receive_encoded(events_and_encoded) ⇒ Object 



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# File 'lib/logstash/outputs/kusto.rb', line 177

def multi_receive_encoded(events_and_encoded)
  encoded_by_path = Hash.new { |h, k| h[k] = [] }

  events_and_encoded.each do |event, encoded|
    file_output_path = event_path(event)
    encoded_by_path[file_output_path] << encoded
  end

  @io_mutex.synchronize do
    encoded_by_path.each do |path, chunks|
      fd = open(path)
      # append to the file
      chunks.each { |chunk| fd.write(chunk) }
      fd.flush unless @flusher && @flusher.alive?
    end

    close_stale_files if @stale_cleanup_type == 'events'
  end
end

#register ⇒ Object 



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# File 'lib/logstash/outputs/kusto.rb', line 107

def register
  require 'fileutils' # For mkdir_p

  @files = {}
  @io_mutex = Mutex.new

  # TODO: add id to the tmp path to support multiple outputs of the same type
  # add fields from the meta that will note the destination of the events in the file
  @path = if dynamic_event_routing
            File.expand_path("#{path}.%{[@metadata][database]}.%{[@metadata][table]}.%{[@metadata][mapping]}")
          else
            File.expand_path("#{path}.#{database}.#{table}")
          end

  validate_path

  @file_root = if path_with_field_ref?
                 extract_file_root
               else
                 File.dirname(path)
               end
  @failure_path = File.join(@file_root, @filename_failure)

  executor = Concurrent::ThreadPoolExecutor.new(min_threads: 1,
                                                max_threads: upload_concurrent_count,
                                                max_queue: upload_queue_size,
                                                fallback_policy: :caller_runs)

  @ingestor = Ingestor.new(ingest_url, app_id, app_key, app_tenant, database, table, mapping, delete_temp_files, @logger, executor)

  # send existing files
  recover_past_files if recovery

  @last_stale_cleanup_cycle = Time.now

  @flush_interval = @flush_interval.to_i
  if @flush_interval > 0
    @flusher = Interval.start(@flush_interval, -> { flush_pending_files })
  end

  if (@stale_cleanup_type == 'interval') && (@stale_cleanup_interval > 0)
    @cleaner = Interval.start(stale_cleanup_interval, -> { close_stale_files })
  end
end