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how to read the data from a csv file in the file store?
To read data from a CSV file in the Pipedream File Store, you can use a Node.js code step in your workflow. Here’s an example of how you might do that: import { axios } from "@pipedream/platform"; import { parse } from "papaparse"; export default defineComponent({ async run({ steps, $ }) { // Replace 'your-csv-file.csv' with the path to your CSV file in the File Store const path = `/tmp/your-csv-file.csv`; // Fetch the CSV file from the File Store const response = await axios($, { method: "GET", url: `${process.env.PIPEDREAM_BASE_URL}/files/${path}`, headers: { Authorization: `Bearer ${process.env.PIPEDREAM_API_KEY}`, }, responseType: "blob", }); // Parse the CSV data const csvData = response.data; const parsedData = parse(csvData, { header: true, // Set to false if your CSV does not have a header row dynamicTyping: true, // Automatically convert numeric and boolean data }); // Return the parsed data return parsedData.data; }, }); Please ensure that you replace 'your-csv-file.csv' with the actual path to your CSV file in the File Store. Also, adjust the header and dynamicTyping options in the parse function according to the format of your CSV file. If you have any further questions or need additional assistance, feel free to reach out for support at Pipedream Support.
TypeError
Cannot read properties of undefined (reading ‘open’)
DETAILS
at Object.run (file:///tmp/__pdg__/dist/code/eb605d5d61b9b54b682602090a3ee23be8836e9d57e85c0c3a09bf4e371d25fd/component.mjs:16:34)
at null.executeComponent (/var/task/launch_worker.js:267:53)
at MessagePort.messageHandler (/var/task/launch_worker.js:764:28)
My code:
import csv from “csv-parser”;
import { Readable } from ‘stream’;
export default defineComponent({
name: “Read CSV file from File Store”,
key: “read-csv-from-file-store”,
version: “0.0.1”,
type: “action”,
props: {
file: {
type: “string”,
label: “The name of the csv file you want to read”
}
},
async run({ steps, $ }) {
const buffer = await $.files.open(this.file).toBuffer();
**const** results = [];
**const** stream = **new** Readable();
stream.push(buffer);
stream.push(**null**);
**const** parsedData = **await** **new** Promise((resolve, reject) => {
stream
.pipe(csv())
.on('data', (data) => results.push(data))
.on('end', () => resolve(results))
.on('error', reject);
});
**return** parsedData;
},
});
It seems like you’re encountering a TypeError related to the open method being undefined. This suggests that the $.files.open method you’re trying to use is not available in the context of your Pipedream component. Pipedream’s $.files object does not have an open method that can be called in this way. If you’re trying to read a file from the Pipedream File Store, you should use the $.service.db.get method to retrieve the file content if it’s stored as a string or buffer. Here’s an example of how you might modify your code to read a file from the Pipedream File Store: import csv from "csv-parser"; import { Readable } from 'stream'; export default defineComponent({ name: "Read CSV file from File Store", key: "read-csv-from-file-store", version: "0.0.1", type: "action", props: { file: { type: "string", label: "The name of the csv file you want to read" } }, async run({ steps, $ }) { // Retrieve the file content from the Pipedream File Store const fileContent = await $.service.db.get(this.file); // Check if the file content was retrieved successfully if (!fileContent) { throw new Error(`File not found: ${this.file}`); } const results = []; const stream = new Readable(); stream.push(fileContent); // Assuming fileContent is a buffer or string stream.push(null); const parsedData = await new Promise((resolve, reject) => { stream .pipe(csv()) .on('data', (data) => results.push(data)) .on('end', () => resolve(results)) .on('error', reject); }); return parsedData; }, }); Please note that this code assumes that the CSV file content is stored as a string or buffer in the Pipedream File Store under the key that matches the file prop provided by the user. If the file content is not stored in this way, you’ll need to adjust the method of retrieving the file accordingly. If you continue to experience issues or if the file is stored elsewhere, please provide more details so I can assist you further.
however, the following code worked:
import csv from “csv-parser”;
import { Readable } from ‘stream’;
export default defineComponent({
// name: “Read CSV file from File Store”,
// key: “read-csv-from-file-store”,
// version: “0.0.1”,
// type: “action”,
props: {
file: {
type: “string”,
label: “The name of the csv file you want to read”
}
},
async run({ steps, $ }) {
const buffer = await $.files.open(this.file).toBuffer();
**const** results = [];
**const** stream = **new** Readable();
stream.push(buffer);
stream.push(**null**);
**const** parsedData = **await** **new** Promise((resolve, reject) => {
stream
.pipe(csv())
.on('data', (data) => results.push(data))
.on('end', () => resolve(results))
.on('error', reject);
});
**return** parsedData;
},
});
import csv from "csv-parser"; import { Readable } from 'stream'; export default defineComponent({ props: { file: { type: "string", label: "The name of the csv file you want to read" } }, async run({ steps, $ }) { const buffer = await $.files.open(this.file).toBuffer(); const results = []; const stream = new Readable(); stream.push(buffer); stream.push(null); const parsedData = await new Promise((resolve, reject) => { stream .pipe(csv()) .on('data', (data) => results.push(data)) .on('end', () => resolve(results)) .on('error', reject); }); return parsedData; }, });
``` The code you've provided appears to be a Pipedream component that reads a CSV file from the File Store, parses its contents, and returns the parsed data. If you have any specific questions or need further assistance with this code, please let me know!