module TingYun::Agent::CrossAppTracing

Constants

TY_DATA_HEADER
TY_ID_HEADER

The cross app id header for “outgoing” calls

Public Instance Methods

add_transaction_trace_info(request, response, cross_app, tx_data) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 127
def add_transaction_trace_info(request, response, cross_app, tx_data)
  state = TingYun::Agent::TransactionState.tl_get
  ::TingYun::Agent::Collector::TransactionSampler.add_node_info(:uri => TingYun::Agent::HTTPClients::URIUtil.filter_uri(request.uri))
  if cross_app
    state.add_current_node_paramsV3(:txData=> TingYun::Support::Serialize::JSONWrapper.dump(tx_data))
    ::TingYun::Agent::Collector::TransactionSampler.tl_builder.set_txId_and_txData(state.client_transaction_id || state.request_guid, tx_data)
  end
end
cross_app_enabled?() click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 158
def cross_app_enabled?
  TingYun::Agent.config[:idSecret] && TingYun::Agent.config[:idSecret].size > 0 &&
      TingYun::Agent.config[:'action_tracer.enabled'] &&
      TingYun::Agent.config[:'nbs.transaction_tracer.enabled']
end
finish_trace(state, t0, node, request, response) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 92
def finish_trace(state, t0, node, request, response)

  t1 = Time.now.to_f
  duration = (t1- t0) * 1000
  state.timings.external_duration = duration

  begin
    if request
      cross_app = response_is_cross_app?(response)
      tx_data = TingYun::Support::Serialize::JSONWrapper.load(get_ty_data_header(response).gsub("'",'"')) || {}
      # net_block_duration = tx_data["time"]? duration - tx_data["time"]["duration"]- tx_data["time"]["qu"] : duration
      # net_block_duration = duration if net_block_duration < 0
      # ::TingYun::Agent.instance.stats_engine.record_scoped_and_unscoped_metrics(state, node_name, metrics, duration)
      # if cross_app
      #   _duration =  tx_data["time"]["duration"] + tx_data["time"]["qu"] + 0.1
      #   metrics_for_cross_app(request, response)
      #   # txn = state.current_transaction
      #   # txn.metrics.record_scoped(metrics_cross_app.pop, duration, _duration)
      #   # txn.metrics.record_unscoped(metrics_cross_app, _duration)
      # end
      if node
        node.name ="#{request.from}/#{request.uri.to_s}"
        add_transaction_trace_info(request, response, cross_app, tx_data)
      end
    end
  rescue => err
    TingYun::Agent.logger.error "Uncaught exception while finishing an HTTP request trace", err
  ensure
    if node
      stack = state.traced_method_stack
      stack.pop_frame(state, node, node.name, t1)
    end
  end
end
finish_traceV2(state, t0, node, request, response) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 53
def finish_traceV2(state, t0, node, request, response)

  t1 = Time.now.to_f
  duration = (t1- t0) * 1000
  state.timings.external_duration = duration

  begin
    if request
      cross_app = response_is_cross_app?(response)

      metrics = metrics_for(request)
      node_name = metrics.pop
      tx_data = TingYun::Support::Serialize::JSONWrapper.load(get_ty_data_header(response).gsub("'",'"')) || {}
      # net_block_duration = tx_data["time"]? duration - tx_data["time"]["duration"]- tx_data["time"]["qu"] : duration
      # net_block_duration = duration if net_block_duration < 0
      # ::TingYun::Agent.instance.stats_engine.record_scoped_and_unscoped_metrics(state, node_name, metrics, duration)
      if cross_app
        _duration =  tx_data["time"]["duration"] + tx_data["time"]["qu"] + 0.1
        metrics_cross_app = metrics_for_cross_app(request, response)
        txn = state.current_transaction
        txn.metrics.record_scoped(metrics_cross_app.pop, duration, _duration)
        txn.metrics.record_unscoped(metrics_cross_app, _duration)
      end

      if node
        node.name = node_name
        add_transaction_trace_info(request, response, cross_app, tx_data)
      end
    end
  rescue => err
    TingYun::Agent.logger.error "Uncaught exception while finishing an HTTP request trace", err
  ensure
    if node
      stack = state.traced_method_stack
      stack.pop_frame(state, node, node_name, t1)
    end
  end
end
get_ty_data_header(response) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 181
def get_ty_data_header(response)
  if defined?(::HTTP) && defined?(::HTTP::Message) && response.class == ::HTTP::Message
    response.header[TY_DATA_HEADER].first.to_s rescue ""
  else
    response[TY_DATA_HEADER].to_s rescue ""
  end
end
inject_request_headers(state, request) click to toggle source

Inject the X-Process header into the outgoing request.

# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 165
def inject_request_headers(state, request)
  request[TY_ID_HEADER] = create_tingyun_id(nil,nil,request)
end
metrics_for(request) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 145
def metrics_for(request)
  metrics = [ "External/NULL/ALL" ]
  if TingYun::Agent::Transaction.recording_web_transaction?
    metrics << "External/NULL/AllWeb"
  else
    metrics << "External/NULL/AllBackground"
  end
  metrics << "External/#{request.uri.to_s.gsub(/\/\z/,'')}/#{request.from}"
  return metrics
end
metrics_for_cross_app(request, response) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 137
def metrics_for_cross_app(request, response)
  my_data =  TingYun::Support::Serialize::JSONWrapper.load get_ty_data_header(response).gsub("'",'"')
  metrics = ["ExternalTransaction/NULL/#{my_data["id"]}",
             "ExternalTransaction/http/#{my_data["id"]}"]
  metrics << "ExternalTransaction/#{request.uri.to_s.gsub(/\/\z/,'')}/#{my_data["id"]}/#{my_data["action"].to_s
                                                                                             .gsub(/\/\z/,'')}"
end
response_is_cross_app?( response ) click to toggle source

Returns true if Cross Application Tracing is enabled, and the given response has the appropriate headers.

# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 171
def response_is_cross_app?( response )
  return false unless response
  return false unless cross_app_enabled?
  return false if get_ty_data_header(response).empty?

  return true
end
start_trace(state, t0, request) click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 46
def start_trace(state, t0, request)
  stack = state.traced_method_stack
  node = stack.push_frame(state, :http_request, t0)
  inject_request_headers(state, request) if cross_app_enabled?
  return node
end
tl_trace_http_request(request) { || ... } click to toggle source
# File lib/ting_yun/agent/cross_app/cross_app_tracing.rb, line 31
def tl_trace_http_request(request)
  state = TingYun::Agent::TransactionState.tl_get
  return yield unless state.execution_traced?
  return yield unless state.current_transaction #如果还没有创建Transaction,就发生跨应用,就直接先跳过跟踪。
  t0 = Time.now.to_f
  begin
    node = start_trace(state, t0, request)
    response = yield
    capture_exception(response, request)
  ensure
    finish_trace(state, t0, node, request, response)
  end
  return response
end