Class: Fluent::Plugin::OpentelemetryOutput::BatchProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/plugin/out_opentelemetry.rb

Defined Under Namespace

Classes: InvalidRecords

Constant Summary collapse

RESOURCE_KEY_MAP = 
{
  Opentelemetry::RECORD_TYPE_LOGS => "resourceLogs",
  Opentelemetry::RECORD_TYPE_METRICS => "resourceMetrics",
  Opentelemetry::RECORD_TYPE_TRACES => "resourceSpans"
}.freeze

Class Method Summary collapse

Class Method Details

.build_export_requests(chunk, logger) ⇒ Object 



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# File 'lib/fluent/plugin/out_opentelemetry.rb', line 134

def self.build_export_requests(chunk, logger)
  requests = {
    Opentelemetry::RECORD_TYPE_LOGS => {},
    Opentelemetry::RECORD_TYPE_METRICS => {},
    Opentelemetry::RECORD_TYPE_TRACES => {}
  }
  invalid = Hash.new { |hash, key| hash[key] = InvalidRecords.new }

  chunk.each do |_, record| # rubocop:disable Style/HashEachMethods
    record_type = record["type"]
    resource_key = RESOURCE_KEY_MAP[record_type]
    unless resource_key
      invalid["unknown type"].add(record_type.inspect)
      next
    end

    begin
      record["message"] = JSON.parse(record["message"])
    rescue JSON::ParserError, TypeError => e
      invalid["broken message"].add(e.message)
      next
    end

    resources = record["message"][resource_key] if record["message"].is_a?(Hash)
    unless resources.is_a?(Array) && resources.first.is_a?(Hash)
      invalid["no #{resource_key}"].add
      next
    end

    resource_hash = resources.first["resource"].hash
    if requests[record_type][resource_hash].nil?
      requests[record_type][resource_hash] = record
    else
      requests[record_type][resource_hash]["message"][resource_key].concat(resources)
    end
  end

  unless invalid.empty?
    logger.warn do
      details = invalid.map { |reason, records| "#{reason}=#{records}" }
      "Skipped invalid records (total: #{invalid.values.sum(&:count)}): #{details.join(', ')}"
    end
  end

  merged_records = requests.values.flat_map(&:values)
  merged_records.each do |record|
    record["message"] = record["message"].to_json
  end
  merged_records
end