code: def fix_grpc_metric(metric: Metric):
      """
      Fix the inbound `opencensus.proto.metrics.v1.Metric` protos to make it acceptable
      by opencensus.stats.DistributionAggregationData.
  
      - metric name: gRPC OpenCensus metrics have names with slashes and dots, e.g.
      `grpc.io/client/server_latency`[1]. However Prometheus metric names only take
      alphanums,underscores and colons[2]. We santinize the name by replacing non-alphanum
      chars to underscore, like the official opencensus prometheus exporter[3].
      - distribution bucket bounds: The Metric proto asks distribution bucket bounds to
      be > 0 [4]. However, gRPC OpenCensus metrics have their first bucket bound == 0 [1].
      This makes the `DistributionAggregationData` constructor to raise Exceptions. This
      applies to all bytes and milliseconds (latencies). The fix: we update the initial 0
      bounds to be 0.000_000_1. This will not affect the precision of the metrics, since
      we don't expect any less-than-1 bytes, or less-than-1-nanosecond times.
  
      [1] https://github.com/census-instrumentation/opencensus-specs/blob/master/stats/gRPC.md#units  # noqa: E501
      [2] https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels
      [3] https://github.com/census-instrumentation/opencensus-cpp/blob/50eb5de762e5f87e206c011a4f930adb1a1775b1/opencensus/exporters/stats/prometheus/internal/prometheus_utils.cc#L39 # noqa: E501
      [4] https://github.com/census-instrumentation/opencensus-proto/blob/master/src/opencensus/proto/metrics/v1/metrics.proto#L218 # noqa: E501
      """
  
      if not metric.metric_descriptor.name.startswith("grpc.io/"):
          return
  
      metric.metric_descriptor.name = RE_NON_ALPHANUMS.sub(
          "_", metric.metric_descriptor.name
      )
  
      for series in metric.timeseries:
          for point in series.points:
              if point.HasField("distribution_value"):
                  dist_value = point.distribution_value
                  bucket_bounds = (
                      dist_value.bucket_options.explicit.bounds
                  )
                  if len(bucket_bounds) > 0 and bucket_bounds[0] == 0:
                      bucket_bounds[0] = 0.000_000_1
  
imports: import json
  import logging
  import os
  import re
  import threading
  import time
  import traceback
  from collections import namedtuple
  from typing import List, Tuple, Any, Dict
  from prometheus_client.core import CounterMetricFamily, GaugeMetricFamily, HistogramMetricFamily
  from opencensus.metrics.export.value import ValueDouble
  from opencensus.stats import aggregation
  from opencensus.stats import measure
  from opencensus.stats.view_manager import ViewManager
  from opencensus.stats.stats_recorder import StatsRecorder
  from opencensus.stats.base_exporter import StatsExporter
  from prometheus_client.core import Metric
  from opencensus.stats.aggregation_data import CountAggregationData, DistributionAggregationData, LastValueAggregationData
  from opencensus.stats.view import View
  from opencensus.tags import tag_key
  from opencensus.tags import tag_map
  from opencensus.tags import tag_value
  import ray
  from ray._raylet import GcsClient
  from ray.core.generated.metrics_pb2 import Metric
label_desc: Use image node_id 1 for calling a global function with example usage: fix_grpc_metric(metric) without return types