with Google Cloud Document AI and Pipedream Utils?
Get memory usage statistics for the current Pipedream workflow.
Convert an object to a JSON format string
Add or subtract time from a given input
Get the duration between two dates in days, hours, minutes, and seconds along with checking if they are the same.
import { DocumentProcessorServiceClient } from '@google-cloud/documentai/build/src/v1/index.js';
import { promises as fs } from 'fs';
import { get } from 'https';
import { writeFile } from 'fs/promises';
import { join } from 'path';
export default defineComponent({
props: {
google_cloud_document_ai: {
type: "app",
app: "google_cloud_document_ai",
}
},
async run({ steps, $ }) {
//Sample pdf file to process by Google Document AI API
const url = 'https://www.learningcontainer.com/wp-content/uploads/2019/09/sample-pdf-file.pdf';
const filePath = join('/tmp', 'my_document.pdf');
const downloadFile = async () => {
const res = await new Promise((resolve) => get(url, resolve));
const chunks = [];
for await (const chunk of res) {
chunks.push(chunk);
}
await writeFile(filePath, Buffer.concat(chunks));
console.log(`File downloaded successfully to ${filePath}`);
};
await downloadFile();
const projectId = this.google_cloud_document_ai.$auth.project_id;
const location = this.google_cloud_document_ai.$auth.location;
const processorId = this.google_cloud_document_ai.$auth.processor_id;
// Instantiates a client
// apiEndpoint regions available: eu-documentai.googleapis.com, us-documentai.googleapis.com (Required if using eu based processor)
// const client = new DocumentProcessorServiceClient({apiEndpoint: 'eu-documentai.googleapis.com'});
const client = new DocumentProcessorServiceClient();
async function testRequest() {
// The full resource name of the processor, e.g.:
// projects/project-id/locations/location/processor/processor-id
// You must create new processors in the Cloud Console first
const name = `projects/${projectId}/locations/${location}/processors/${processorId}`;
// Read the file into memory.
const imageFile = await fs.readFile(filePath);
// Convert the image data to a Buffer and base64 encode it.
const encodedImage = Buffer.from(imageFile).toString('base64');
const request = {
name,
rawDocument: {
content: encodedImage,
mimeType: 'application/pdf',
},
};
// Recognizes text entities in the PDF document
const [result] = await client.processDocument(request);
const { document } = result;
// Get all of the document text as one big string
const { text } = document;
// Extract shards from the text field
const getText = textAnchor => {
if (!textAnchor.textSegments || textAnchor.textSegments.length === 0) {
return '';
}
// First shard in document doesn't have startIndex property
const startIndex = textAnchor.textSegments[0].startIndex || 0;
const endIndex = textAnchor.textSegments[0].endIndex;
return text.substring(startIndex, endIndex);
};
// Read the text recognition output from the processor
const [page1] = document.pages;
const { paragraphs } = page1;
let concatenatedText = "";
for (const paragraph of paragraphs) {
const paragraphText = getText(paragraph.layout.textAnchor);
concatenatedText += paragraphText;
}
return concatenatedText;
}
return await testRequest();
}
})
The Pipedream Utils app is a set of pre-built functions that streamline common tasks in your workflows. It acts like a Swiss Army knife for developers, providing essential tools such as format conversion, date manipulation, and text processing. By leveraging these functions, you can reduce the boilerplate code needed for routine operations, speeding up the development of intricate automations. The Helper Functions API can be a game changer when it comes to tasks like parsing dates in user-friendly formats, encoding and decoding data, or generating UUIDs, making them more efficient and less error-prone.
export default defineComponent({
props: {
pipedream_utils: {
type: "app",
app: "pipedream_utils",
}
},
async run({steps, $}) {
},
})