Changing defaults and query sanitation to keep it from crashing on reasonable queries

from flask import Flask, request, jsonify, current_app

from flask_restful import Resource, Api

from megatron import get_args

from megatron import mpu

from megatron.text_generation import generate_and_post_process

            if not isinstance(logprobs, bool):

                return "logprobs must be a boolean value"

        temperature = args.temperature

        temperature = 1.0

        if "temperature" in request.get_json():

            temperature = request.get_json()["temperature"]

            if not (type(temperature) == int or type(temperature) == float):

            if not (0.0 < temperature <= 100.0):

                return "temperature must be a positive number less than or equal to 100.0"

        top_k = args.top_k

        top_k = 0.0

        if "top_k" in request.get_json():

            top_k = request.get_json()["top_k"]

            if not (type(top_k) == int):

            if not (0 < top_k <= 1000):

                return "top_k must be equal to or greater than 0 and less than or equal to 1000"

        top_p = args.top_p

        top_p = 0.0

        if "top_p" in request.get_json():

            top_p = request.get_json()["top_p"]

            if not (type(top_p) == float):

                return "top_p must be a positive float less than or equal to 1.0"

            if top_p > 0.0 and top_k > 0.0:

                return "cannot set both top-k and top-p samplings."

            if not (0 < top_p <= 1.0):

                return "top_p must be less than or equal to 1.0"