Module: OpenCensus::Trace::Exporters::JaegerDriver

Extended by:
JaegerDriver
Included in:
JaegerDriver
Defined in:
lib/opencensus/trace/exporters/jaeger_driver.rb,
lib/opencensus/trace/exporters/jaeger_driver/udp_sender.rb,
lib/opencensus/trace/exporters/jaeger_driver/udp_transport.rb,
lib/opencensus/trace/exporters/jaeger_driver/intermediate_transport.rb

Defined Under Namespace

Classes: IntermediateTransport, UDPSender, UDPTransport

Constant Summary collapse

MAX_64BIT_SIGNED_INT = 
(1 << 63) - 1
MAX_64BIT_UNSIGNED_INT = 
(1 << 64) - 1
TRACE_ID_UPPER_BOUND = 
MAX_64BIT_UNSIGNED_INT + 1
FIELDS = 
::Jaeger::Thrift::Tag::FIELDS
KEY = 
FIELDS[::Jaeger::Thrift::Tag::KEY].fetch(:name)
VTYPE = 
FIELDS[::Jaeger::Thrift::Tag::VTYPE].fetch(:name)
VLONG = 
FIELDS[::Jaeger::Thrift::Tag::VLONG].fetch(:name)
VDOUBLE = 
FIELDS[::Jaeger::Thrift::Tag::VDOUBLE].fetch(:name)
VBOOL = 
FIELDS[::Jaeger::Thrift::Tag::VBOOL].fetch(:name)
VSTR = 
FIELDS[::Jaeger::Thrift::Tag::VSTR].fetch(:name)

Instance Method Summary collapse

Instance Method Details

#base16_hex_id_to_uint64(id) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 71

def base16_hex_id_to_uint64(id)
  return nil unless id
  value = id.to_i(16)
  value > MAX_64BIT_UNSIGNED_INT || value.negative? ? 0 : value
end

#base16_hex_to_int64(id) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 83

def base16_hex_to_int64(id)
  uint64_id = base16_hex_id_to_uint64(id)
  uint64_id_to_int64(uint64_id)
end

#build_logs(time_events) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 128

def build_logs(time_events)
  time_events.map do |event|
    ::Jaeger::Thrift::Log.new(
      'timestamp' => (event.time.to_f * 1_000_000).to_i,
      'fields' => build_thrift_tags(
        'message.id': event.id,
        'message.type': event.type
      )
    )
  end
end

#build_references(links) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 140

def build_references(links)
  links.map do |link|
    ::Jaeger::Thrift::SpanRef.new(
      'refType' => build_span_ref(link.type),
      'traceIdLow' => base16_hex_to_int64(
        link.trace_id.slice(0, 16)
      ),
      'traceIdHigh' => base16_hex_to_int64(
        link.trace_id.slice(16)
      ),
      'spanId' => base16_hex_to_int64(
        link.span_id
      )
    )
  end
end

#build_span_ref(type) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 157

def build_span_ref(type)
  case type
  when OpenCensus::Trace::CHILD_LINKED_SPAN
    ::Jaeger::Thrift::SpanRefType::CHILD_OF
  when OpenTracing::Reference::PARENT_LINKED_SPAN
    ::Jaeger::Thrift::SpanRefType::FOLLOWS_FROM
  else
    logger.error "Cannot build thrift reference with #{ref_type}"
  end
end

#build_thrift_tags(attributes) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 88

def build_thrift_tags(attributes)
  attributes.collect do |key, value|
    begin
      if value.is_a?(OpenCensus::Trace::TruncatableString)
        ::Jaeger::Thrift::Tag.new(
          KEY => key.to_s,
          VTYPE => ::Jaeger::Thrift::TagType::STRING,
          VSTR => value.value
        )
      elsif value.is_a?(Integer)
        ::Jaeger::Thrift::Tag.new(
          KEY => key.to_s,
          VTYPE => ::Jaeger::Thrift::TagType::LONG,
          VLONG => value
        )
      elsif value.is_a?(Float)
        ::Jaeger::Thrift::Tag.new(
          KEY => key.to_s,
          VTYPE => ::Jaeger::Thrift::TagType::DOUBLE,
          VDOUBLE => value
        )
      elsif value.is_a?(TrueClass) || value.is_a?(FalseClass)
        ::Jaeger::Thrift::Tag.new(
          KEY => key.to_s,
          VTYPE => ::Jaeger::Thrift::TagType::BOOL,
          VBOOL => value
        )
      else
        ::Jaeger::Thrift::Tag.new(
          KEY => key.to_s,
          VTYPE => ::Jaeger::Thrift::TagType::STRING,
          VSTR => value.to_s
        )
      end
    rescue StandardError => e
      logger.error "Cannot build thrift tags for #{key}:#{value}, error: #{e}"
    end
  end
end

#encode_span(span) ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 26

def encode_span(span)
  tags = build_thrift_tags(span.attributes)
  logs = build_logs(span.time_events)
  references = build_references(span.links)
  trace_id = span.trace_id
  trace_id_high = base16_hex_to_int64(
    trace_id.slice(0, 16)
  )
  trace_id_low = base16_hex_to_int64(
    trace_id.slice(16, trace_id.size)
  )
  span_id = base16_hex_to_int64(
    span.span_id
  )
  parent_span_id = base16_hex_to_int64(
    span.parent_span_id
  )
  operation_name = span.name.value
  flags = 0x01
  start_time = (span.start_time.to_f * 1_000_000).to_i
  end_time = (span.end_time.to_f * 1_000_000).to_i
  duration = end_time - start_time

  ::Jaeger::Thrift::Span.new(
    'traceIdLow': trace_id_low,
    'traceIdHigh': trace_id_high,
    'spanId': span_id,
    'parentSpanId': parent_span_id,
    'operationName': operation_name,
    'references': references,
    'flags': flags,
    'startTime': start_time,
    'duration': duration,
    'tags': tags,
    'logs': logs
  )
rescue StandardError => e
  puts "convert error #{e}"
end

#ip_v4 ⇒ Object 



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 66

def ip_v4
  ip_v4 = Socket.ip_address_list.find { |ai| ai.ipv4? && !ai.ipv4_loopback? }
  ip_v4.nil? ? nil : ip_v4.ip_address
end

#uint64_id_to_int64(id) ⇒ Object

Thrift defines ID fields as i64, which is signed, therefore we convert large IDs (> 2^63) to negative longs



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# File 'lib/opencensus/trace/exporters/jaeger_driver.rb', line 79

def uint64_id_to_int64(id)
  id > MAX_64BIT_SIGNED_INT ? id - MAX_64BIT_UNSIGNED_INT - 1 : id
end