code: def test_proxy_metrics_fields_internal_error(serve_start_shutdown):
      """Tests the proxy metrics' fields' behavior for internal error."""
  
      @serve.deployment()
      def f(*args):
          return 1 / 0
  
      real_app_name = "app"
      real_app_name2 = "app2"
      serve.run(
          f.bind(), name=real_app_name, route_prefix="/real_route"
      )
      serve.run(
          f.bind(), name=real_app_name2, route_prefix="/real_route2"
      )
  
      # Deployment should generate divide-by-zero errors
      correct_url = "http://127.0.0.1:8000/real_route"
      requests.get(correct_url).text
      print("Sent requests to correct URL.")
  
      # Ping gPRC proxy for broken app
      channel = grpc.insecure_channel("localhost:9000")
      with pytest.raises(grpc.RpcError):
          ping_grpc_call_method(channel=channel, app_name=real_app_name)
  
      num_deployment_errors = get_metric_dictionaries(
          "serve_num_deployment_http_error_requests"
      )
      assert len(num_deployment_errors) == 1
      assert num_deployment_errors[0]["deployment"] == "f"
      assert num_deployment_errors[0]["error_code"] == "500"
      assert num_deployment_errors[0]["method"] == "GET"
      assert num_deployment_errors[0]["application"] == "app"
      print(
          "serve_num_deployment_http_error_requests working as expected."
      )
  
      num_deployment_errors = get_metric_dictionaries(
          "serve_num_deployment_grpc_error_requests"
      )
      assert len(num_deployment_errors) == 1
      assert num_deployment_errors[0]["deployment"] == "f"
      assert num_deployment_errors[0]["error_code"] == str(
          grpc.StatusCode.INTERNAL
      )
      assert (
          num_deployment_errors[0]["method"]
          == "/ray.serve.UserDefinedService/__call__"
      )
      assert num_deployment_errors[0]["application"] == real_app_name
      print(
          "serve_num_deployment_grpc_error_requests working as expected."
      )
  
      latency_metrics = get_metric_dictionaries(
          "serve_http_request_latency_ms_sum"
      )
      assert len(latency_metrics) == 1
      assert latency_metrics[0]["method"] == "GET"
      assert latency_metrics[0]["route"] == "/real_route"
      assert latency_metrics[0]["application"] == "app"
      assert latency_metrics[0]["status_code"] == "500"
      print("serve_http_request_latency_ms working as expected.")
  
      latency_metrics = get_metric_dictionaries(
          "serve_grpc_request_latency_ms_sum"
      )
      assert len(latency_metrics) == 1
      assert (
          latency_metrics[0]["method"]
          == "/ray.serve.UserDefinedService/__call__"
      )
      assert latency_metrics[0]["route"] == real_app_name
      assert latency_metrics[0]["application"] == real_app_name
      assert latency_metrics[0]["status_code"] == str(
          grpc.StatusCode.INTERNAL
      )
      print("serve_grpc_request_latency_ms_sum working as expected.")
  
imports: import os
  import sys
  from typing import DefaultDict, Dict, List, Optional
  import grpc
  import pytest
  import requests
  from fastapi import FastAPI
  import ray
  import ray.util.state
  from ray import serve
  from ray._private.test_utils import SignalActor, wait_for_condition
  from ray.serve._private.constants import DEFAULT_LATENCY_BUCKET_MS
  from ray.serve._private.long_poll import LongPollHost, UpdatedObject
  from ray.serve._private.test_utils import ping_fruit_stand, ping_grpc_call_method, ping_grpc_list_applications
  from ray.serve._private.utils import block_until_http_ready
  from ray.serve.config import gRPCOptions
  from ray.serve.handle import DeploymentHandle
  from ray.serve.metrics import Counter, Gauge, Histogram
  from ray.serve.tests.test_config_files.grpc_deployment import g, g2
label_desc: Use image node_id 7 for calling a global function with example usage: test_proxy_metrics_fields_internal_error(serve_start_shutdown) and returns: unknown