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TomDo1234
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@ -226,6 +226,187 @@ Please visit the [official pricing model for R2 for more info](https://developer
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:::
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This sample fetches a buffer from R2 and parses the workbook.
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1) If you do not have an account, create a new Cloudflare account [^7]
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2) Once in the dashboard, click on R2 , you will need a valid credit card to get access to R2
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3) Click on Create Bucket. Select your bucket name and region. Then click "Create Bucket" at the bottom
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4) Click on R2 again on the dashboard, then click Manage R2 API Tokens
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5) Click on Create API Token, then make sure to set the correct permissions for what you want to do, then click "Create API Token" at the bottom
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#### Set up Project
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6) Create a new NodeJS project and install dependencies:
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```bash
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mkdir SheetJSR2
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cd SheetJSR2
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npm init -y
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# Install Dependencies
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mkdir -p node_modules
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npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz @aws-sdk/client-s3@3.540.0
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```
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#### Write Test
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:::note pass
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This sample creates a simple workbook, generates a NodeJS buffer, and uploads
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the buffer to S3.
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```
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| A | B | C | D | E | F | G |
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---+---|---|---|---|---|---|---|
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1 | S | h | e | e | t | J | S |
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2 | 5 | 4 | 3 | 3 | 7 | 9 | 5 |
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```
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:::
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7) Save the following script to `SheetJSWriteToR2.js`:
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```js title="SheetJSWriteToR2.js"
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const { PutObjectCommand, S3Client } = require("@aws-sdk/client-s3");
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const XLSX = require("xlsx");
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/* replace these constants */
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// highlight-start
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var accessKeyId = "accessKeyId";
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var secretAccessKey = "secretAccessKey";
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var Bucket = "Bucket";
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// highlight-end
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var region = "REGION";
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var Key = "sheetjstest.xlsx";
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var endpoint = "ENDPOINT";
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/* Create a simple workbook and write XLSX to buffer */
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var ws = XLSX.utils.aoa_to_sheet(["SheetJS".split(""), [5,4,3,3,7,9,5]]);
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var wb = XLSX.utils.book_new(); XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
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var Body = XLSX.write(wb, {type: "buffer", bookType: "xlsx"});
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/* upload to R2 */
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var s3 = new S3Client({
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credentials: {
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accessKeyId,
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secretAccessKey
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},
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region,
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endpoint
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});
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const command = new PutObjectCommand({
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Body,
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Bucket,
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Key
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})
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s3.send(command).then(data => {
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console.log("Entity Tag: " + data.ETag);
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}).catch(e => {
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throw e
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});
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```
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:::note pass
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Although this minimal example is in regular js and therefore cannot use async await syntax at top level, be aware that the S3 SDK is async
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and thus you can use async await if you wish
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:::
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1) Edit `SheetJSWriteToR2.js` and replace the highlighted lines:
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- `accessKeyId`: access key for the AWS account
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- `secretAccessKey`: secret access key for the AWS account
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- `Bucket`: name of the bucket
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- `REGION`: region of the bucket
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- `ENDPOINT`: endpoint of your cloudflare R2, should end with .r2.cloudflarestorage.com ,
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To get this endpoint go to the settings of your bucket and copy the "S3 API" in Bucket details, remove the /bucket-name at the end of the url
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The keys are found in the CSV from step 22. The Bucket is the name from step 5.
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1) Run the script:
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```bash
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node SheetJSWriteToR2.js
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```
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This file will be stored with the object name `test.xlsx`. It can be manually
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downloaded from the S3 web interface.
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#### Read Test
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This sample will download and process the test file from "Write Test".
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10) Save the following script to `SheetJSReadFromR2.js`:
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```js title="SheetJSReadFromR2.js"
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const { GetObjectCommand, S3Client } = require("@aws-sdk/client-s3");
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const XLSX = require("xlsx");
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/* replace these constants */
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// highlight-start
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var accessKeyId = "accessKeyId";
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var secretAccessKey = "secretAccessKey";
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var Bucket = "Bucket";
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// highlight-end
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var region = "REGION";
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var Key = "sheetjstest.xlsx";
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var endpoint = "ENDPOINT";
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/* upload to R2 */
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var s3 = new S3Client({
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credentials: {
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accessKeyId,
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secretAccessKey
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},
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region,
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endpoint
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});
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const command = new GetObjectCommand({
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Bucket,
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Key
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})
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s3.send(command).then(async (data) => {
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var wb = XLSX.read(await data.Body?.transformToByteArray());
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console.log(XLSX.utils.sheet_to_csv(wb.Sheets[wb.SheetNames[0]]));
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}).catch(e => {
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throw e
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});
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```
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11) Edit `SheetJSReadFromR2.js` and replace the highlighted lines:
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- `accessKeyId`: access key for the AWS account
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- `secretAccessKey`: secret access key for the AWS account
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- `Bucket`: name of the bucket
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- `REGION`: region of the bucket
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- `ENDPOINT`: endpoint of your cloudflare R2, should end with .r2.cloudflarestorage.com ,
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To get this endpoint go to the settings of your bucket and copy the "S3 API" in Bucket details, remove the /bucket-name at the end of the url
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The keys are found in the CSV from Step 22. The Bucket is the name from Step 5.
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12) Run the script:
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```bash
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node SheetJSReadFromR2.js
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```
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The program will display the data in CSV format.
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```
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S,h,e,e,t,J,S
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5,4,3,3,7,9,5
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```
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[^1]: See ["Node.js compatibility"](https://developers.cloudflare.com/workers/runtime-apis/nodejs/) in the Cloudflare documentation
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[^2]: See ["Get started guide"](https://developers.cloudflare.com/workers/get-started/guide/#1-create-a-new-worker-project)
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[^3]: [Wrangler documentation](https://developers.cloudflare.com/workers/wrangler/)
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