code: def log_event(
      self, kwargs, response_obj, start_time, end_time, print_verbose
  ):
      try:
          print_verbose(
              f"s3 Logging - Enters logging function for model {kwargs}"
          )
  
          # construct payload to send to s3
          # follows the same params as langfuse.py
          litellm_params = kwargs.get("litellm_params", {})
          metadata = (
              litellm_params.get("metadata", {}) or {}
          )  # if litellm_params['metadata'] == None
          messages = kwargs.get("messages")
          optional_params = kwargs.get("optional_params", {})
          call_type = kwargs.get("call_type", "litellm.completion")
          cache_hit = kwargs.get("cache_hit", False)
          usage = response_obj["usage"]
          id = response_obj.get("id", str(uuid.uuid4()))
  
          # Build the initial payload
          payload = {
              "id": id,
              "call_type": call_type,
              "cache_hit": cache_hit,
              "startTime": start_time,
              "endTime": end_time,
              "model": kwargs.get("model", ""),
              "user": kwargs.get("user", ""),
              "modelParameters": optional_params,
              "messages": messages,
              "response": response_obj,
              "usage": usage,
              "metadata": metadata,
          }
  
          # Ensure everything in the payload is converted to str
          for key, value in payload.items():
              try:
                  payload[key] = str(value)
              except:
                  # non blocking if it can't cast to a str
                  pass
  
          s3_object_key = (
              payload["id"] + "-time=" + str(start_time)
          )  # we need the s3 key to include the time, so we log cache hits too
  
          import json
  
          payload = json.dumps(payload)
  
          print_verbose(f"\ns3 Logger - Logging payload = {payload}")
  
          response = self.s3_client.put_object(
              Bucket=self.bucket_name,
              Key=s3_object_key,
              Body=payload,
              ContentType="application/json",
              ContentLanguage="en",
              ContentDisposition=f'inline; filename="{key}.json"',
          )
  
          print_verbose(f"Response from s3:{str(response)}")
  
          print_verbose(
              f"s3 Layer Logging - final response object: {response_obj}"
          )
          return response
      except Exception as e:
          traceback.print_exc()
          print_verbose(
              f"s3 Layer Error - {str(e)}\n{traceback.format_exc()}"
          )
          pass
  
file_path: litellm/litellm/integrations/s3.py
imports: import dotenv, os
  import requests
  import traceback
  import datetime, subprocess, sys
  import litellm, uuid
  from litellm._logging import print_verbose
label_desc: Use image node_id 2 for calling the S3Logger obj's underlying member method code with example usage: obj.log_event(kwargs, response_obj, start_time, end_time, print_verbose) and returns: response