{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 먼저 ping 함수가 잘 동작하는지 테스트를 진행합니다. (GET /ping)\n",
    "\n",
    "ping API는 SageMaker에서 사용할 모델이 정상적으로 로드되고 서비스가 정장적으로 동작하는지 헬스체크의 용도로 사용됩니다. 결과코드는 **200**이 리턴되어야 합니다. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import json\n",
    "from urllib import request\n",
    "\n",
    "base_url='http://localhost:8080'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Response code: 200\n"
     ]
    }
   ],
   "source": [
    "resp = request.urlopen(\"%s/ping\" % base_url)\n",
    "print(\"Response code: %d\" % resp.getcode() )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 이제 예측을 실행해 봅니다. (POST /invocations)\n",
    "\n",
    "invocations API는 SageMaker를 통해 예측을 실행하는데 사용됩니다. \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Response code: 200, Prediction: b'0.0\\n'\n",
      "\n",
      "content-type text/csv\n",
      "x-request-id ddaaf714-ff71-4544-a808-c0f14c83e45a\n",
      "Pragma no-cache\n",
      "Cache-Control no-cache; no-store, must-revalidate, private\n",
      "Expires Thu, 01 Jan 1970 00:00:00 UTC\n",
      "content-length 4\n",
      "connection keep-alive\n",
      "Response code: 200, Prediction: b'2.0\\n'\n",
      "\n",
      "content-type text/csv\n",
      "x-request-id f51fa946-45f0-4e44-9e19-e3bb67c30103\n",
      "Pragma no-cache\n",
      "Cache-Control no-cache; no-store, must-revalidate, private\n",
      "Expires Thu, 01 Jan 1970 00:00:00 UTC\n",
      "content-length 4\n",
      "connection keep-alive\n",
      "Response code: 200, Prediction: b'1.0\\n'\n",
      "\n",
      "content-type text/csv\n",
      "x-request-id 3127fc5f-5c9b-45cf-afac-161c27066aee\n",
      "Pragma no-cache\n",
      "Cache-Control no-cache; no-store, must-revalidate, private\n",
      "Expires Thu, 01 Jan 1970 00:00:00 UTC\n",
      "content-length 4\n",
      "connection keep-alive\n",
      "CPU times: user 1.25 s, sys: 936 ms, total: 2.18 s\n",
      "Wall time: 937 ms\n"
     ]
    }
   ],
   "source": [
    "%%time\n",
    "from sagemaker.serializers import CSVSerializer\n",
    "csv_serializer = CSVSerializer()\n",
    "payloads = [\n",
    "    [4.6, 3.1, 1.5, 0.2], # 0\n",
    "    [7.7, 2.6, 6.9, 2.3], # 2\n",
    "    [6.1, 2.8, 4.7, 1.2]  # 1\n",
    "]\n",
    "\n",
    "def predict(payload):\n",
    "    headers = {\n",
    "        'Content-type': 'text/csv',\n",
    "        'Accept': 'text/csv'\n",
    "    }\n",
    "    \n",
    "    req = request.Request(\"%s/invocations\" % base_url, data=csv_serializer.serialize(payload).encode('utf-8'), headers=headers)\n",
    "    resp = request.urlopen(req)\n",
    "    print(\"Response code: %d, Prediction: %s\\n\" % (resp.getcode(), resp.read()))\n",
    "    for i in resp.headers:\n",
    "        print(i, resp.headers[i])\n",
    "\n",
    "for p in payloads:\n",
    "    predict(p)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 테스트가 완료되면 1번 노트북으로 복귀하고 실행중인 셀을 멈춥니다. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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