{"id":23764,"date":"2025-11-15T09:09:15","date_gmt":"2025-11-15T09:09:15","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=23764"},"modified":"2025-11-15T09:09:15","modified_gmt":"2025-11-15T09:09:15","slug":"lambdaxs3%e3%81%a7%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%87%aa%e5%8b%95%e6%95%b4%e7%90%86%ef%bc%81%e3%82%a4%e3%83%99%e3%83%b3%e3%83%88%e9%80%9a%e7%9f%a5%e3%81%a7%e6%97%a5%e4%bb%98","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/23764\/","title":{"rendered":"Lambda\u00d7S3\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u81ea\u52d5\u6574\u7406\uff01\u30a4\u30d9\u30f3\u30c8\u901a\u77e5\u3067\u65e5\u4ed8\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u308b\u65b9\u6cd5 – Zenet Tech Blog"},"content":{"rendered":"\n<\/p>\n
\n

<\/p>\n

\u00a0<\/p>\n

\u306f\u3058\u3081\u306b<\/h3>\n

\u30bc\u30cd\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u4e8b\u696d\u90e8\u306e\u65b9\u3067\u3059\u3002<\/p>\n

AWS\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u3068\u3001S3\u306b\u5927\u91cf\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u6e9c\u307e\u3063\u3066\u3044\u304d\u3001\u6574\u7406\u3084\u7ba1\u7406\u304c\u5927\u5909\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002
\u624b\u52d5\u3067\u6574\u7406\u3059\u308b\u306e\u306f\u624b\u9593\u304c\u304b\u304b\u308a\u3001\u30df\u30b9\u3082\u767a\u751f\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u672c\u8a18\u4e8b\u3067\u306f\u3001S3\u30a4\u30d9\u30f3\u30c8\u901a\u77e5\u3092\u30c8\u30ea\u30ac\u30fc\u306bLambda\u95a2\u6570\u3092\u52d5\u304b\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u81ea\u52d5\u6574\u7406<\/strong>\u3059\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002
IAM\u6a29\u9650\u3084\u30d0\u30b1\u30c3\u30c8\u30dd\u30ea\u30b7\u30fc\u3092\u6700\u5c0f\u9650\u306b\u3057\u3064\u3064\u3001\u65e5\u4ed8\u3054\u3068\u306b\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u308b\u4f8b\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u8ab2\u984c<\/h3>\n

S3\u904b\u7528\u3067\u3088\u304f\u3042\u308b\u8ab2\u984c\u306f\u4ee5\u4e0b\u3067\u3059\uff1a<\/p>\n

    \n
  • \n

    \u30d5\u30a1\u30a4\u30eb\u304c\u5897\u3048\u7d9a\u3051\u3066\u6574\u7406\u304c\u5927\u5909<\/p>\n<\/li>\n

  • \n

    \u65e5\u4ed8\u3054\u3068\u306b\u81ea\u52d5\u3067\u5206\u985e\u3057\u305f\u3044<\/p>\n<\/li>\n

  • \n

    \u4e00\u5b9a\u671f\u9593\u7d4c\u904e\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u81ea\u52d5\u524a\u9664\u3057\u305f\u3044<\/p>\n<\/li>\n

  • \n

    \u624b\u52d5\u64cd\u4f5c\u306b\u3088\u308b\u30d2\u30e5\u30fc\u30de\u30f3\u30a8\u30e9\u30fc\u3092\u9632\u304e\u305f\u3044<\/p>\n<\/li>\n<\/ul>\n

    \u3053\u308c\u3089\u306e\u8ab2\u984c\u306f\u3001Lambda + S3\u30a4\u30d9\u30f3\u30c8\u901a\u77e5 + CloudWatch Logs<\/strong> \u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u5b9f\u88c5\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/h3>\n
      \n
    1. \n

      \u30e6\u30fc\u30b6\u304c S3 \u30d0\u30b1\u30c3\u30c8\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/p>\n<\/li>\n

    2. \n

      ObjectCreated<\/code> \u30a4\u30d9\u30f3\u30c8\u3092\u30c8\u30ea\u30ac\u30fc\u306b Lambda \u95a2\u6570\u304c\u8d77\u52d5<\/p>\n<\/li>\n

    3. \n

      Lambda \u304c\u30d5\u30a1\u30a4\u30eb\u3092\u65e5\u4ed8\u30d5\u30a9\u30eb\u30c0\uff08\u4f8b\uff1a2025\/10\/16\/<\/code>\uff09\u306b\u6574\u7406\uff08\u30b3\u30d4\u30fc\uff0b\u524a\u9664\uff09<\/p>\n<\/li>\n

    4. \n

      CloudWatch Logs \u306b\u51e6\u7406\u72b6\u6cc1\u3092\u51fa\u529b<\/p>\n<\/li>\n<\/ol>\n

      \n

      <\/p>

      \u69cb\u6210\u56f3<\/figcaption><\/figure>\n

      \u5b9f\u88c5\u624b\u9806<\/h3>\n

      1. S3\u30d0\u30b1\u30c3\u30c8\u4f5c\u6210<\/h4>\n

      \u307e\u305a\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u5148\u3068\u306a\u308b S3 \u30d0\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002
      \u4f8b\u3067\u306f test-hou<\/code> \u3068\u3044\u3046\u30d0\u30b1\u30c3\u30c8\u540d\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n

      \n

      <\/p>

      S3\u30d0\u30b1\u30c3\u30c8\u4f5c\u6210<\/figcaption><\/figure>\n

      2. Lambda\u95a2\u6570\u4f5c\u6210<\/h4>\n
        \n
      1. Lambda \u30b3\u30f3\u30bd\u30fc\u30eb<\/strong>\u3067\u65b0\u3057\u3044\u95a2\u6570\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
          \n
        1. \n
            \n
          1. \n
              \n
            1. \n

              \u30e9\u30f3\u30bf\u30a4\u30e0: Python 3.13<\/p>\n<\/li>\n

            2. \n

              \u5b9f\u884c\u30ed\u30fc\u30eb: \u5f8c\u8ff0\u306eIAM\u30dd\u30ea\u30b7\u30fc\u3092\u4ed8\u4e0e\u3057\u305f\u30ed\u30fc\u30eb\u3092\u4f7f\u7528<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/li>\n

            3. Lambda\u306e\u4e00\u822c\u8a2d\u5b9a<\/strong>\u3067\u300c\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u300d\u30921\u5206\u7a0b\u5ea6\u306b\u5909\u66f4\u3057\u3066\u304f\u3060\u3055\u3044\uff08\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306b\u4f59\u88d5\u3092\u6301\u305f\u305b\u308b\u305f\u3081\uff09\u3002
              \n
              \n

              <\/p>

              Lambda\u4e00\u822c\u8a2d\u5b9a-\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8<\/figcaption><\/figure>\n<\/li>\n
            4. \u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u30c7\u30d7\u30ed\u30a4\u3057\u307e\u3059\u3002\n
              import boto3\nimport os\nfrom datetime import datetime, timezone\n\ns3 = boto3.client('s3')\n\ndef lambda_handler(event, context):\n    # S3\u30a4\u30d9\u30f3\u30c8\u304b\u3089\u30d0\u30b1\u30c3\u30c8\u540d\u3068\u30d5\u30a1\u30a4\u30eb\u30ad\u30fc\u3092\u53d6\u5f97\n    bucket = event['Records'][0]['s3']['bucket']['name']\n    key = event['Records'][0]['s3']['object']['key']\n    print(f\"\u30a4\u30d9\u30f3\u30c8\u53d7\u4fe1: {event}\")\n\n    # \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6700\u7d42\u66f4\u65b0\u65e5\u3092\u53d6\u5f97\n    response = s3.head_object(Bucket=bucket, Key=key)\n    last_modified = response['LastModified'].astimezone(timezone.utc).date()\n    today = datetime.now(timezone.utc).date()\n    print(f\"\u30d5\u30a1\u30a4\u30eb\u66f4\u65b0\u65e5: {last_modified}, \u672c\u65e5\u306e\u65e5\u4ed8: {today}\")\n\n    # \u65e5\u4ed8\u30d5\u30a9\u30eb\u30c0\u3078\u79fb\u52d5\n    folder_path = today.strftime('%Y\/%m\/%d')\n    new_key = f\"{folder_path}\/{os.path.basename(key)}\"\n\n    # \u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3057\u3066\u5143\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\n    s3.copy_object(Bucket=bucket, CopySource={'Bucket': bucket, 'Key': key}, Key=new_key)\n    s3.delete_object(Bucket=bucket, Key=key)\n\n    print(f\"\u2705 \u6574\u7406\u5b8c\u4e86: {key} \u2192 {new_key}\")\n\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
              3. \u30c8\u30ea\u30ac\u30fc\u8a2d\u5b9a\uff08S3\u30a4\u30d9\u30f3\u30c8\u901a\u77e5\uff09<\/h4>\n
              Lambda\u95a2\u6570\u306e\u8a2d\u5b9a\u753b\u9762\u304b\u3089\u3001\u30c8\u30ea\u30ac\u30fc\u3092\u8ffd\u52a0<\/strong>\u3057\u307e\u3059\u3002
              \u30c8\u30ea\u30ac\u30fc\u30bf\u30a4\u30d7\u306b S3<\/strong> \u3092\u9078\u629e\u3057\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
                \n
              • \n
                \u30a4\u30d9\u30f3\u30c8\u30bf\u30a4\u30d7\uff1aAll object create events\uff08\u3059\u3079\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u4f5c\u6210\u30a4\u30d9\u30f3\u30c8\uff09<\/code><\/p>\n<\/li>\n
              • \n
                \u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u30fb\u30b5\u30d5\u30a3\u30c3\u30af\u30b9\uff1a\u5168\u30d5\u30a1\u30a4\u30eb\u5bfe\u8c61\u306e\u5834\u5408\u306f\u6307\u5b9a\u3057\u306a\u3044<\/p>\n<\/li>\n<\/ul>\n
                \n
                <\/p>
                \u95a2\u6570\u306b\u30c8\u30ea\u30ac\u30fc\u3092\u8ffd\u52a0<\/figcaption><\/figure>\n
                \u00a0<\/p>\n
                \n
                <\/p>
                \u30c8\u30ea\u30ac\u30fc\u8a2d\u5b9a<\/figcaption><\/figure>\n
                \n
                <\/p>
                \u30c8\u30ea\u30ac\u30fc\u8a73\u7d30\u8a2d\u5b9a<\/figcaption><\/figure>\n
                \n
                <\/p>
                \u30c8\u30ea\u30ac\u30fc\u8a2d\u5b9a\u6210\u529f\u753b\u9762<\/figcaption><\/figure>\n
                \u8a2d\u5b9a\u3092\u4fdd\u5b58\u3059\u308b\u3068\u3001\u300c\u30c8\u30ea\u30ac\u30fc\u304c\u6b63\u5e38\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u300d\u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
                4. Lambda\u5b9f\u884c\u30ed\u30fc\u30eb\u6a29\u9650<\/h4>\n<\/div>\n