Solana Dev 101 - DAS APIを使用してコレクション内のすべてのNFTを取得する

const { promises : fs } = require("fs");
const url = `https://rpc.helius.xyz/?api-key=`;

const getAssetsByGroup = async () => {
// Code goes here.
};

getAssetsByGroup();

console.time('getAssetsByGroup');
let page = 1;
let assetList = [];

try {
   while (page) {
    const response = await fetch(url, {
      method: 'POST',

headers: {
	'Content-Type': 'application/json',
},

body: JSON.stringify({
	jsonrpc: '2.0',
	id: 'my-id',
	method: 'getAssetsByGroup',
	params: {
		groupKey: 'collection',
		groupValue: 'J1S9H3QjnRtBbbuD4HjPV6RpRhwuk4zKbxsnCHuTgh9w',
		page: page,
		limit: 1000,
	},
}),

if (!response.ok) {
        throw new Error(`HTTP error! status: ${response.status}`);
    }

const { result } = await response.json();

assetList.push(...result.items);
    if (result.total !== 1000) {
      page = false;
    } else {
      page++;
    }
  }

const resultData = {
    totalResults: assetList.length,
    results: assetList,
  };

  await fs.writeFile('results.json', JSON.stringify(resultData, null, 2));
	console.log('Results saved to results.json')
  console.timeEnd('getAssetsByGroup');

} catch (error) {
    console.error('Error occurred:', error);
}

const { promises : fs } = require("fs");
const url = `https://rpc.helius.xyz/?api-key=`;

const getAssetsByGroup = async () => {
  console.time('getAssetsByGroup'); // Start the timer
  let page = 1;
  let assetList = [];

try {
   while (page) {
    const response = await fetch(url, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        jsonrpc: '2.0',
        id: 'my-id',
        method: 'getAssetsByGroup',
        params: {
          groupKey: 'collection',
          groupValue: 'J1S9H3QjnRtBbbuD4HjPV6RpRhwuk4zKbxsnCHuTgh9w',
          page: page,
          limit: 1000,
        },
      }),
    });
		if (!response.ok) {
        throw new Error(`HTTP error! status: ${response.status}`);
    }
    const { result } = await response.json();

    assetList.push(...result.items);
    if (result.total !== 1000) {
      page = false;
    } else {
      page++;
    }
  }

  const resultData = {
    totalResults: assetList.length,
    results: assetList,
  };

  await fs.writeFile('results.json', JSON.stringify(resultData, null, 2));
	console.log('Results saved to results.json')
  console.timeEnd('getAssetsByGroup');

	} catch (error) {
    console.error('Error occurred:', error);
  }

};

getAssetsByGroup();

{
  "totalResults": 9967,
  "results": [
    {
      "interface": "Custom",
      "id": "GVPX9rXRXo9SVGktJCzA3Qb9v263kQzEyAWsgX3LL8P5",
      "content": {
        "$schema": "https://schema.metaplex.com/nft1.0.json",
        "json_uri": "https://madlads.s3.us-west-2.amazonaws.com/json/859.json",
        "files": [
          {
            "uri": "https://madlads.s3.us-west-2.amazonaws.com/images/859.png",
            "cdn_uri": "https://cdn.helius.services/cdn-cgi/image//https://madlads.s3.us-west-2.amazonaws.com/images/859.png",
            "mime": "image/png"
          },
          {
            "uri": "https://arweave.net/qJ5B6fx5hEt4P7XbicbJQRyTcbyLaV-OQNA1KjzdqOQ/859.png",
            "cdn_uri": "https://cdn.helius.services/cdn-cgi/image//https://arweave.net/qJ5B6fx5hEt4P7XbicbJQRyTcbyLaV-OQNA1KjzdqOQ/859.png",
            "mime": "image/png"
          }
        ],
        "metadata": {
          "attributes": [
            {
              "value": "Male",
              "trait_type": "Gender"
            },
            {
              "value": "Galaxy",
              "trait_type": "Type"
            },
            {
              "value": "Galaxy",
              "trait_type": "Expression"
            },
            {
              "value": "Gambler",
              "trait_type": "Hat"
            },
            {
              "value": "Galaxy",
              "trait_type": "Eyes"
            },
            {
              "value": "Dark Windsor",
              "trait_type": "Clothing"
            },
            {
              "value": "Grey",
              "trait_type": "Background"
            }
          ],
          "description": "Fock it.",
          "name": "Mad Lads #859",
          "symbol": "MAD"
        },
        "links": {
          "external_url": null
        }
      },
      "authorities": [
        {
          "address": "2RtGg6fsFiiF1EQzHqbd66AhW7R5bWeQGpTbv2UMkCdW",
          "scopes": [
            "full"
          ]
        }
      ],
      "compression": {
        "eligible": false,
        "compressed": false,
        "data_hash": "",
        "creator_hash": "",
        "asset_hash": "",
        "tree": "",
        "seq": 0,
        "leaf_id": 0
      },
      "grouping": [
        {
          "group_key": "collection",
          "group_value": "J1S9H3QjnRtBbbuD4HjPV6RpRhwuk4zKbxsnCHuTgh9w"
        }
      ],
      "royalty": {
        "royalty_model": "creators",
        "target": null,
        "percent": 0.042,
        "basis_points": 420,
        "primary_sale_happened": true,
        "locked": false
      },
      "creators": [
        {
          "address": "5XvhfmRjwXkGp3jHGmaKpqeerNYjkuZZBYLVQYdeVcRv",
          "share": 0,
          "verified": true
        },
        {
          "address": "2RtGg6fsFiiF1EQzHqbd66AhW7R5bWeQGpTbv2UMkCdW",
          "share": 100,
          "verified": true
        }
      ],
      "ownership": {
        "frozen": false,
        "delegated": false,
        "delegate": null,
        "ownership_model": "single",
        "owner": "GX6KFMFS6yZGJzuZ28Q5Cbk9RN8Wv8UmNP2abcC4kcM2"
      },
      "supply": null,
      "mutable": true
    }, ...
    // Addtional Items
]