Class: LogStash::Outputs::LMLogs

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/outputs/lmlogs.rb

Overview

An example output that does nothing.

Defined Under Namespace

Classes: InvalidHTTPConfigError

Constant Summary collapse

@@MAX_PAYLOAD_SIZE = 
8*1024*1024
@@CONSOLE_LOGS =

For developer debugging.

false

Instance Method Summary collapse

Instance Method Details

#client ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 174

def client
  @client ||= make_client
end

#client_config ⇒ Object

def register



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# File 'lib/logstash/outputs/lmlogs.rb', line 142

def client_config
  c = {
      connect_timeout: @connect_timeout,
      socket_timeout: @socket_timeout,
      request_timeout: @request_timeout,
      follow_redirects: @follow_redirects,
      automatic_retries: @automatic_retries,
      retry_non_idempotent: @retry_non_idempotent,
      check_connection_timeout: @validate_after_inactivity,
      pool_max: @pool_max,
      pool_max_per_route: @pool_max_per_route,
      cookies: @cookies,
      keepalive: @keepalive
  }

  if @proxy
    # Symbolize keys if necessary
    c[:proxy] = @proxy.is_a?(Hash) ?
                    @proxy.reduce({}) {|memo,(k,v)| memo[k.to_sym] = v; memo} :
                    @proxy
  end

  log_debug("manticore client config: ", :client => c)
  return c
end

#close ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 179

def close
  @client.close
end

#configure_auth ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 183

def configure_auth
  @use_bearer_instead_of_lmv1 = false
  if @access_id == nil || @access_key.value == nil
    @logger.info "Access Id or access key null. Using bearer token for authentication."
    @use_bearer_instead_of_lmv1 = true
  end
  if @use_bearer_instead_of_lmv1 && @bearer_token.value == nil
    @logger.error "Bearer token not specified. Either access_id and access_key both or bearer_token must be specified for authentication with Logicmonitor."
    raise LogStash::ConfigurationError, 'No valid authentication specified. Either access_id and access_key both or bearer_token must be specified for authentication with Logicmonitor.'
  end
end

#generate_auth_string(body) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 194

def generate_auth_string(body)
  if @use_bearer_instead_of_lmv1
    return "Bearer #{@bearer_token.value}"
  else
    timestamp = DateTime.now.strftime('%Q')
    hash_this = "POST#{timestamp}#{body}/log/ingest"
    sign_this = OpenSSL::HMAC.hexdigest(
                  OpenSSL::Digest.new('sha256'),
                  "#{@access_key.value}",
                  hash_this
                )
    signature = Base64.strict_encode64(sign_this)
    return "LMv1 #{@access_id}:#{signature}:#{timestamp}"
  end
end

#isValidPayloadSize(documents, lmlogs_event, max_payload_size) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 342

def isValidPayloadSize(documents,lmlogs_event,max_payload_size)
  if (documents.to_json.bytesize + lmlogs_event.to_json.bytesize) >  max_payload_size
        send_batch(documents)
        documents = []

  end
  documents.push(lmlogs_event)
  return documents
end

#log_debug(message, *opts) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 272

def log_debug(message, *opts)
  if @@CONSOLE_LOGS
    puts "[#{DateTime::now}] [logstash.outputs.lmlogs] [DEBUG] #{message} #{opts.to_s}"
  elsif debug
    @logger.debug(message, *opts)
  end
end

#log_failure(message, opts) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 338

def log_failure(message, opts)
  @logger.error("[HTTP Output Failure] #{message}", opts)
end

#multi_receive(events) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 281

def multi_receive(events)
  if events.length() > 0
    log_debug(events.to_json)
 end

  events.each_slice(@batch_size) do |chunk|
    documents = []
    chunk.each do |event|

      documents = isValidPayloadSize(documents, processEvent(event), @@MAX_PAYLOAD_SIZE)
    end
    send_batch(documents)
  end
end

#processEvent(event) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 297

def processEvent(event)
  event_json = JSON.parse(event.to_json)
  lmlogs_event = {}

  if @include_metadata
    lmlogs_event = event_json
    lmlogs_event.delete("@timestamp")  # remove redundant timestamp field
    if lmlogs_event.dig("event", "original") != nil
      lmlogs_event["event"].delete("original") # remove redundant log field
    end
  elsif @final_metadata_keys
    @final_metadata_keys.each do | key, value |
      nestedVal = event_json
      value.each do |x|
        if nestedVal == nil
          break
        end
        nestedVal = nestedVal[x]
      end
      if nestedVal != nil
        lmlogs_event[key] = nestedVal
      end
    end
  end

  lmlogs_event["message"] = event.get(@message_key).to_s
  lmlogs_event["_lm.resourceId"] = {}
  lmlogs_event["_lm.resourceId"]["#{@lm_property}"] = event.get(@property_key.to_s)

  if @keep_timestamp
    lmlogs_event["timestamp"] = event.get("@timestamp")
  end

  if @timestamp_is_key
    lmlogs_event["timestamp"] = event.get(@timestamp_key.to_s)
  end

  return lmlogs_event

end

#register ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 119

def register
  @total = 0
  @total_failed = 0
  logger.info("Initialized LogicMonitor output plugin with configuration",
              :host => @host)
  logger.info("Max Payload Size: ",
              :size => @@MAX_PAYLOAD_SIZE)
  configure_auth

  # Check if `portal_domain` is an empty string and set the default value
  if @portal_domain.nil? || @portal_domain.strip.empty?
    @portal_domain = "logicmonitor.com"
  end

  @final_metadata_keys = Hash.new
  if @include_metadata_keys.any?
    include_metadata_keys.each do | nested_key |
      @final_metadata_keys[nested_key] = nested_key.to_s.split('.')
    end
  end

end

#send_batch(events) ⇒ Object 



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# File 'lib/logstash/outputs/lmlogs.rb', line 210

def send_batch(events)
  log_debug("Started sending logs to LM: ",
                :time => Time::now.utc)
  url = "https://" + @portal_name + "." + @portal_domain +"/rest/log/ingest"
  body = events.to_json
  auth_string = generate_auth_string(body)
  request = client.post(url, {
      :body => body,
      :headers => {
              "Content-Type" => "application/json",
              "User-Agent" => "lm-logs-logstash/" + LmLogsLogstashPlugin::VERSION,
              "Authorization" => "#{auth_string}"
      }
  })

  request.on_success do |response|
    if response.code == 202
      @total += events.length
      log_debug("Successfully sent ",
                    :response_code => response.code,
                    :batch_size => events.length,
                    :total_sent => @total,
                    :time => Time::now.utc)
    elsif response.code == 207
      log_failure(
        "207 HTTP code - some of the events successfully parsed, some not. ",
        :response_code => response.code,
        :url => url,
        :response_body => response.body,
        :total_failed => @total_failed)
    else
      @total_failed += 1
      log_failure(
          "Encountered non-202/207 HTTP code #{response.code}",
          :response_code => response.code,
          :url => url,
          :response_body => response.body,
          :total_failed => @total_failed)
    end
  end

  request.on_failure do |exception|
    @total_failed += 1
    log_failure("The request failed. ",
                :url => url,
                :method => @http_method,
                :message => exception.message,
                :class => exception.class.name,
                :backtrace => exception.backtrace,
                :total_failed => @total_failed
    )
  end

  log_debug("Completed sending logs to LM",
                :total => @total,
                :time => Time::now.utc)
  request.call

rescue Exception => e
  @logger.error("[Exception=] #{e.message} #{e.backtrace}")
end