code: def start(
      config_file,
      url_root="./translator",
      host="0.0.0.0",
      port=5000,
      debug=False,
  ):
      def prefix_route(route_function, prefix="", mask="{0}{1}"):
          def newroute(route, *args, **kwargs):
              return route_function(
                  mask.format(prefix, route), *args, **kwargs
              )
  
          return newroute
  
      if debug:
          logger = logging.getLogger("main")
          log_format = logging.Formatter(
              "[%(asctime)s %(levelname)s] %(message)s"
          )
          file_handler = RotatingFileHandler(
              "debug_requests.log", maxBytes=1000000, backupCount=10
          )
          file_handler.setFormatter(log_format)
          logger.addHandler(file_handler)
  
      app = Flask(__name__)
      app.route = prefix_route(app.route, url_root)
      translation_server = TranslationServer()
      translation_server.start(config_file)
  
      @app.route("/models", methods=["GET"])
      def get_models():
          out = translation_server.list_models()
          return jsonify(out)
  
      @app.route("/health", methods=["GET"])
      def health():
          out = {}
          out["status"] = STATUS_OK
          return jsonify(out)
  
      @app.route("/clone_model/<int:model_id>", methods=["POST"])
      def clone_model(model_id):
          out = {}
          data = request.get_json(force=True)
          timeout = -1
          if "timeout" in data:
              timeout = data["timeout"]
              del data["timeout"]
  
          opt = data.get("opt", None)
          try:
              model_id, load_time = translation_server.clone_model(
                  model_id, opt, timeout
              )
          except ServerModelError as e:
              out["status"] = STATUS_ERROR
              out["error"] = str(e)
          else:
              out["status"] = STATUS_OK
              out["model_id"] = model_id
              out["load_time"] = load_time
  
          return jsonify(out)
  
      @app.route("/unload_model/<int:model_id>", methods=["GET"])
      def unload_model(model_id):
          out = {"model_id": model_id}
  
          try:
              translation_server.unload_model(model_id)
              out["status"] = STATUS_OK
          except Exception as e:
              out["status"] = STATUS_ERROR
              out["error"] = str(e)
  
          return jsonify(out)
  
      @app.route("/translate", methods=["POST"])
      def translate():
          inputs = request.get_json(force=True)
          if debug:
              logger.info(inputs)
          out = {}
          try:
              (
                  trans,
                  scores,
                  n_best,
                  _,
                  aligns,
                  align_scores,
              ) = translation_server.run(inputs)
              assert len(trans) == len(inputs) * n_best
              assert len(scores) == len(inputs) * n_best
              assert len(aligns) == len(inputs) * n_best
  
              out = [[] for _ in range(n_best)]
              for i in range(len(trans)):
                  response = {
                      "src": inputs[i // n_best]["src"],
                      "tgt": trans[i],
                      "n_best": n_best,
                      "pred_score": scores[i],
                  }
                  if len(aligns[i]) > 0 and aligns[i][0] is not None:
                      response["align"] = aligns[i]
                      response["align_score"] = align_scores[i]
                  out[i % n_best].append(response)
          except ServerModelError as e:
              model_id = inputs[0].get("id")
              if debug:
                  logger.warning(
                      "Unload model #{} "
                      "because of an error".format(model_id)
                  )
              translation_server.models[model_id].unload()
              out["error"] = str(e)
              out["status"] = STATUS_ERROR
          if debug:
              logger.info(out)
          return jsonify(out)
  
      @app.route("/to_cpu/<int:model_id>", methods=["GET"])
      def to_cpu(model_id):
          out = {"model_id": model_id}
          translation_server.models[model_id].to_cpu()
  
          out["status"] = STATUS_OK
          return jsonify(out)
  
      @app.route("/to_gpu/<int:model_id>", methods=["GET"])
      def to_gpu(model_id):
          out = {"model_id": model_id}
          translation_server.models[model_id].to_gpu()
  
          out["status"] = STATUS_OK
          return jsonify(out)
  
      serve(app, host=host, port=port)
  
file_path: OpenNMT-py/onmt/bin/server.py
imports: import configargparse
  from flask import Flask, jsonify, request
  from waitress import serve
  from onmt.translate import TranslationServer, ServerModelError
  import logging
  from logging.handlers import RotatingFileHandler
label_desc: Use image node_id 1 for calling a global function with example usage: start(config_file, url_root, host, port, debug) and returns: newroute, jsonify, jsonify, jsonify, jsonify, jsonify, jsonify, jsonify, route_function