diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml new file mode 100644 index 0000000..129d650 --- /dev/null +++ b/.github/workflows/build.yml @@ -0,0 +1,74 @@ +# This is a basic workflow to help you get started with Actions + +name: Builds Images + +# Controls when the workflow will run +on: + workflow_dispatch: + push: + branches: + - "main" + - "dev" + tags: + - "v*.*.*" + pull_request: + branches: + - "main" + - "dev" + +permissions: + contents: read + packages: write + +# A workflow run is made up of one or more jobs that can run sequentially or in parallel +jobs: + build-image: + runs-on: ubuntu-latest + steps: + # Get the repositery's code + - name: Checkout + uses: actions/checkout@v3 + + # https://github.com/docker/setup-qemu-action + - name: Set up QEMU + uses: docker/setup-qemu-action@v2 + # https://github.com/docker/setup-buildx-action + - name: Set up Docker Buildx + id: buildx + uses: docker/setup-buildx-action@v2 + + - name: Login to GHCR + if: github.event_name != 'pull_request' + uses: docker/login-action@v2 + with: + registry: ghcr.io + username: ${{ github.repository_owner }} + password: ${{ secrets.GITHUB_TOKEN }} + + - name: Docker meta for image + id: meta + uses: docker/metadata-action@v4 + with: + # list of Docker images to use as base name for tags + images: | + ghcr.io/cloudx-labs/scrapex + # generate Docker tags based on the following events/attributes + tags: | + type=ref,event=branch + type=ref,event=pr + type=semver,pattern={{version}} + type=semver,pattern={{major}}.{{minor}} + type=semver,pattern={{major}} + type=sha + - name: Build and push image + uses: docker/build-push-action@v5 + with: + context: ./scrapex + file: ./scrapex/Dockerfile + platforms: linux/amd64 + provenance: false + cache-from: type=registry,ref=ghcr.io/cloudx-labs/scrapex:main + cache-to: type=inline + push: ${{ github.event_name != 'pull_request' }} + tags: ${{ steps.meta.outputs.tags }} + labels: ${{ steps.meta.outputs.labels }} diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c6bba59 --- /dev/null +++ b/.gitignore @@ -0,0 +1,130 @@ +# Logs +logs +*.log +npm-debug.log* +yarn-debug.log* +yarn-error.log* +lerna-debug.log* +.pnpm-debug.log* + +# Diagnostic reports (https://nodejs.org/api/report.html) +report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json + +# Runtime data +pids +*.pid +*.seed +*.pid.lock + +# Directory for instrumented libs generated by jscoverage/JSCover +lib-cov + +# Coverage directory used by tools like istanbul +coverage +*.lcov + +# nyc test coverage +.nyc_output + +# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files) +.grunt + +# Bower dependency directory (https://bower.io/) +bower_components + +# node-waf configuration +.lock-wscript + +# Compiled binary addons (https://nodejs.org/api/addons.html) +build/Release + +# Dependency directories +node_modules/ +jspm_packages/ + +# Snowpack dependency directory (https://snowpack.dev/) +web_modules/ + +# TypeScript cache +*.tsbuildinfo + +# Optional npm cache directory +.npm + +# Optional eslint cache +.eslintcache + +# Optional stylelint cache +.stylelintcache + +# Microbundle cache +.rpt2_cache/ +.rts2_cache_cjs/ +.rts2_cache_es/ +.rts2_cache_umd/ + +# Optional REPL history +.node_repl_history + +# Output of 'npm pack' +*.tgz + +# Yarn Integrity file +.yarn-integrity + +# dotenv environment variable files +.env +.env.development.local +.env.test.local +.env.production.local +.env.local + +# parcel-bundler cache (https://parceljs.org/) +.cache +.parcel-cache + +# Next.js build output +.next +out + +# Nuxt.js build / generate output +.nuxt +dist + +# Gatsby files +.cache/ +# Comment in the public line in if your project uses Gatsby and not Next.js +# https://nextjs.org/blog/next-9-1#public-directory-support +# public + +# vuepress build output +.vuepress/dist + +# vuepress v2.x temp and cache directory +.temp +.cache + +# Docusaurus cache and generated files +.docusaurus + +# Serverless directories +.serverless/ + +# FuseBox cache +.fusebox/ + +# DynamoDB Local files +.dynamodb/ + +# TernJS port file +.tern-port + +# Stores VSCode versions used for testing VSCode extensions +.vscode-test + +# yarn v2 +.yarn/cache +.yarn/unplugged +.yarn/build-state.yml +.yarn/install-state.gz +.pnp.* diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..8936aeb --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Cloud(x); + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..9d6cb2d --- /dev/null +++ b/README.md @@ -0,0 +1,91 @@ +# Scrapex + +## Introduction + +Scrapex is a versatile scraping component designed to efficiently extract content from URLs. Leveraging the power of Playwright and Chrome, it ensures seamless support for Single Page Applications (SPAs) and content dependent on JavaScript execution. Initially developed for internal use by our AI Agents, Scrapex offers robust functionality for a wide range of scraping needs. + +## Features + +- _Support for Multiple Output Formats_: Scrapex can output data in HTML, Markdown, or PDF formats, catering to diverse requirements. +- _Container Image deployment_: For ease of deployment and scalability, Scrapex is fully compatible with Container environments such as Docker or Kubernetes. +- _Customizable Settings_: Through environment variables, as well as parameters in the extraction call, users can tailor the behavior of Scrapex to suit their specific scraping tasks. + +## Configuration + +Scrapex supports the following output formats: + +1. _HTML_: Direct extraction of HTML content. +2. _Markdown_: Conversion of HTML to Markdown using `html-to-md`. +3. _PDF_: Generation of PDF documents utilizing Playwright's PDF functionality. + +### Environment Variables + +Configure Scrapex using the following environment variables: + +| Variable | Description | Default | +| -------------------- | ------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------- | +| `PORT` | Port on which Node.js server listens | `3000` | +| `DEFAULT_WAIT` | Default milliseconds to wait on page load | `0` | +| `DEFAULT_USER_AGENT` | Default user agent for requests | `"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"` | +| `LOG_LEVEL` | Logging level (`debug`, `info`, `warn`, `error`) | `debug` | + +## How to Run + +The simplest way to run Scrapex is using Docker. Here's an example `docker-compose.yaml`: + +```yaml +version: "3" +services: + app: + container_name: scrapex + image: ghcr.io/cloudx-labs/scrapex:main # it's better to pin down to a specific release version such as v0.1 + environment: + - TZ=America/Argentina/Buenos_Aires + - PORT=3000 + - LOG_LEVEL=debug + ports: + - "3003:3000" +``` + +## Usage Example + +To test Scrapex, you can send a request using curl as shown below: + +```bash +curl --location 'http://localhost:3003/extract' \ +--header 'Content-Type: application/json' \ +--data '{ + "url": "https://en.wikipedia.org/wiki/Six_Degrees_of_Kevin_Bacon", + "outputType": "pdf", + "wait": 0, + "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36", + "settings": { + "pdf": { + "options": { + "format": "A4" + } + } + } +}' +``` + +### Payload Parameters + +The following table describes the parameters included in the payload of the `curl` example: +| Parameter | Description | Example | +|--------------|-------------------------------------------|---------------------------------------------------| +| url | URL of the page to scrape | https://en.wikipedia.org/wiki/Six_Degrees_of_Kevin_Bacon | +| outputType | Desired output format | html / md / pdf | +| wait | Milliseconds to wait before extraction | 2000 | +| userAgent | User agent to use for the request | Mozilla/5.0 (Windows NT 10.0; Win64; x64)... | +| settings | Additional settings for output formatting | { "pdf": { "options": { "format": "A4" } } } | + +### Settings per extraction Type + +#### PDF + +All available values for `settings -> pdf -> options` can be found at: https://playwright.dev/docs/api/class-page#page-pdf + +#### Markdown (MD) + +All available values for `setting -> md -> options` can be found at: https://github.com/stonehank/html-to-md/blob/master/README-EN.md diff --git a/scrapex/.dockerignore b/scrapex/.dockerignore new file mode 100644 index 0000000..9aa00b9 --- /dev/null +++ b/scrapex/.dockerignore @@ -0,0 +1,6 @@ +**/node_modules +Dockerfile +docker-compose.yaml +.prettierrc +.eslintrc.json +.dockerignore \ No newline at end of file diff --git a/scrapex/.eslintrc.json b/scrapex/.eslintrc.json new file mode 100644 index 0000000..b23aa08 --- /dev/null +++ b/scrapex/.eslintrc.json @@ -0,0 +1,17 @@ +{ + "env": { + "node": true, + "es2021": true + }, + "extends": "eslint:recommended", + "parserOptions": { + "ecmaVersion": "latest", + "sourceType": "module" + }, + "plugins": ["import"], + "rules": { + "import/no-unresolved": 2, + "import/no-commonjs": 2, + "import/extensions": [2, "ignorePackages"] + } +} diff --git a/scrapex/.prettierrc b/scrapex/.prettierrc new file mode 100644 index 0000000..a1570af --- /dev/null +++ b/scrapex/.prettierrc @@ -0,0 +1,8 @@ +{ + "semi": true, + "trailingComma": "es5", + "singleQuote": false, + "printWidth": 120, + "useTabs": true, + "endOfLine": "auto" +} diff --git a/scrapex/Dockerfile b/scrapex/Dockerfile new file mode 100644 index 0000000..e0fbd93 --- /dev/null +++ b/scrapex/Dockerfile @@ -0,0 +1,25 @@ +#FROM node:20-alpine +FROM mcr.microsoft.com/playwright:v1.42.1-jammy + +ENV NODE_ENV=production + +RUN apt update && apt install dumb-init \ + && apt-get clean \ + && rm -rf /var/lib/apt/lists/* + +WORKDIR /usr/src/app +COPY package*.json ./ +RUN npm ci --only=production + +# Add non-root user +RUN adduser --disabled-password --gecos '' appuser \ + && chown -R appuser:appuser /usr/src/app + +# Switch to the non-root user +USER appuser + +COPY . . + +ENTRYPOINT ["/usr/bin/dumb-init", "--"] + +CMD ["node", "-r", "dotenv/config", "./src/server.js"] diff --git a/scrapex/docker-compose.yaml b/scrapex/docker-compose.yaml new file mode 100644 index 0000000..a823803 --- /dev/null +++ b/scrapex/docker-compose.yaml @@ -0,0 +1,11 @@ +version: "3" +services: + app: + container_name: scrapex + build: . + environment: + - TZ=America/Argentina/Buenos_Aires + - PORT=3000 + - LOG_LEVEL=debug + ports: + - 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"^0.8.5", + "http-terminator": "^3.2.0", + "playwright": "1.42.1", + "short-uuid": "^4.2.2", + "tempfile": "^5.0.0" + } +} diff --git a/scrapex/src/handlers/extract.js b/scrapex/src/handlers/extract.js new file mode 100644 index 0000000..e0f5718 --- /dev/null +++ b/scrapex/src/handlers/extract.js @@ -0,0 +1,157 @@ +import { log } from "../logger.js"; +import * as TimeUtils from "../timeUtils.js"; +import { chromium } from "playwright"; +import html2md from "html-to-md"; + +const extractionHandlers = new Map([ + ["html", extractHtml], + ["md", extractMarkdown], + ["pdf", extractPdf], +]); + +const DEFAULT_WAIT = process.env.DEFAULT_WAIT || 0; +const DEFAULT_USER_AGENT = + process.env.DEFAULT_USER_AGENT || + "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"; + +export default async function handle(req, res) { + const params = req.body; + const url = decodeURIComponent(params.url); + const outputType = params.outputType; // type = "html", "md", "pdf" + const wait = params.wait || DEFAULT_WAIT; + const userAgent = params.userAgent || DEFAULT_USER_AGENT; + + log.info(`Extracting "${outputType}" from "${url}"`); + log.debug(JSON.stringify(params)); + + const browser = await getBrowser(); + const context = await getNewContext(browser, userAgent); + + try { + if (!extractionHandlers.has(outputType)) { + throw new Error(`Unknown type "${outputType}"`); + } + const parameters = { + context, + url, + wait, + params, + }; + const extractionResult = await TimeUtils.profile("Extraction", () => + extractionHandlers.get(outputType)(parameters) + ); + res.json(extractionResult); + } catch (err) { + log.warn(err); + res.status(500).json({ + message: err.message, + }); + } finally { + await tearDown(browser, context); + } +} + +async function loadPage({ context, url, wait }) { + const result = await TimeUtils.profile("Opening Page", async () => { + const page = await context.newPage(); + const response = await page.goto(url); + await page.waitForLoadState("domcontentloaded"); + return { page, response }; + }); + await TimeUtils.delay(wait); + return result; +} + +async function buildResponse({ page, response }, { contentType, content }) { + return { + source: { + status: response.status(), + url: page.url(), + headers: await response.headers(), + }, + output: { + contentType: contentType, + content: content, + }, + }; +} + +async function extractHtml({ context, url, wait }) { + const result = await loadPage({ + context, + url, + wait, + }); + return await buildResponse(result, { + contentType: "text/html", + content: await result.page.content(), + }); +} + +async function extractMarkdown({ context, url, wait, params }) { + const result = await loadPage({ + context, + url, + wait, + }); + + const htmlContent = await result.page.content(); + + const mdOptions = params.settings?.md?.options || {}; + if (mdOptions.tagListener) delete mdOptions.tagListener; + + log.debug(`MD options: ${JSON.stringify(mdOptions)}`); + + const markdownContent = await TimeUtils.profile("Converting to MD", () => html2md(htmlContent, mdOptions)); + + return await buildResponse(result, { + contentType: "text/markdown", + content: markdownContent, + }); +} + +async function extractPdf({ context, url, wait, params }) { + const result = await loadPage({ + context, + url, + wait, + }); + result.page.emulateMedia({ media: "print" }); + const pdfOptions = params.settings?.pdf?.options || { + format: "Letter", + }; + if (pdfOptions.path) delete pdfOptions.path; + + log.debug(`PDF options: ${JSON.stringify(pdfOptions)}`); + + const buffer = await TimeUtils.profile("Creating PDF", () => result.page.pdf(pdfOptions)); + return buildResponse(result, { + contentType: "application/pdf", + content: buffer.toString("base64"), + }); +} + +async function getBrowser() { + const browser = await TimeUtils.profile("Opening Browser", () => + chromium.launch({ + headless: true, + }) + ); + return browser; +} + +async function getNewContext(browser, userAgent) { + const context = await TimeUtils.profile("New Context", () => + browser.newContext({ + userAgent: userAgent, + }) + ); + return context; +} + +async function tearDown(browser, context) { + await TimeUtils.profile("Closing Context and Browser", async () => { + await context.close(); + await browser.close(); + }); +} diff --git a/scrapex/src/handlers/healthcheck.js b/scrapex/src/handlers/healthcheck.js new file mode 100644 index 0000000..846db02 --- /dev/null +++ b/scrapex/src/handlers/healthcheck.js @@ -0,0 +1,3 @@ +export default async function handle(req, res) { + res.send("Healthy"); +} diff --git a/scrapex/src/logger.js b/scrapex/src/logger.js new file mode 100644 index 0000000..b231b53 --- /dev/null +++ b/scrapex/src/logger.js @@ -0,0 +1,24 @@ +import { createLogger, format, transports } from "winston"; +import expressWinston from "express-winston"; + +const customFormat = format.printf(({ level, message, timestamp, durationMs }) => { + return `${timestamp} ${level}: ${message} ${durationMs ? durationMs + "ms" : ""}`; +}); + +export const log = createLogger({ + level: process.env.LOG_LEVEL || "debug", + format: format.combine(format.timestamp(), customFormat), + transports: [new transports.Console()], +}); + +export const express = expressWinston.logger({ + transports: [new transports.Console()], + format: format.combine(format.timestamp(), customFormat), + meta: true, // optional: control whether you want to log the meta data about the request (default to true) + msg: "HTTP {{req.method}} {{req.url}}", // optional: customize the default logging message. E.g. "{{res.statusCode}} {{req.method}} {{res.responseTime}}ms {{req.url}}" + expressFormat: true, // Use the default Express/morgan request formatting. Enabling this will override any msg if true. Will only output colors with colorize set to true + colorize: false, // Color the text and status code, using the Express/morgan color palette (text: gray, status: default green, 3XX cyan, 4XX yellow, 5XX red). + ignoreRoute: function (req, res) { + return req.path === "/health"; + }, // optional: allows to skip some log messages based on request and/or response +}); diff --git a/scrapex/src/middleware.js b/scrapex/src/middleware.js new file mode 100644 index 0000000..3cb6860 --- /dev/null +++ b/scrapex/src/middleware.js @@ -0,0 +1,15 @@ +import express from "express"; +import { log, express as expressLogger } from "./logger.js"; + +export function configure(app) { + app.use(express.json()); + app.use(expressLogger); + app.use((err, req, res, next) => { + if (err) { + log.error(err); + res.status(500).send(err.message); + } else { + next(); + } + }); +} diff --git a/scrapex/src/routes.js b/scrapex/src/routes.js new file mode 100644 index 0000000..8d0ecbd --- /dev/null +++ b/scrapex/src/routes.js @@ -0,0 +1,8 @@ +import healthCheck from "./handlers/healthcheck.js"; +import extract from "./handlers/extract.js"; + +export function configure(app) { + // Define a route + app.get("/health", healthCheck); + app.post("/extract", extract); +} diff --git a/scrapex/src/server.js b/scrapex/src/server.js new file mode 100644 index 0000000..4003036 --- /dev/null +++ b/scrapex/src/server.js @@ -0,0 +1,38 @@ +import express from "express"; +import { createHttpTerminator } from "http-terminator"; +import { log } from "./logger.js"; +import * as Middlware from "./middleware.js"; +import * as Routes from "./routes.js"; + +// create an instance of express +const app = express(); + +// define a port +const PORT = process.env.PORT || 3000; + +// set up all middlewares +await Middlware.configure(app); + +// configure api routes +await Routes.configure(app); + +// start the server +const server = app.listen(PORT, () => { + log.info(`Server is running on port ${PORT}`); +}); + +// set up the httpTerminator which gracefully disconnects clients during shutdown +const httpTerminator = createHttpTerminator({ server }); + +process.on("uncaughtException", function (err) { + log.error("UNCAUGHT EXCEPTION - keeping process alive:", err); +}); + +// Graceful shutdown +process.on("SIGTERM", async () => { + log.info("Stopping Application"); + await httpTerminator.terminate(); + + log.info("Exiting"); + process.exit(0); +}); diff --git a/scrapex/src/timeUtils.js b/scrapex/src/timeUtils.js new file mode 100644 index 0000000..8f85e66 --- /dev/null +++ b/scrapex/src/timeUtils.js @@ -0,0 +1,21 @@ +import short from "short-uuid"; +import { log } from "./logger.js"; + +export async function profile(name, func) { + const timerLabel = `${name} - ${short.generate()}`; + try { + log.debug(`Starting ${name}`); + log.profile(timerLabel); + return await func(); + } finally { + log.profile(timerLabel); + } +} + +export function delay(time) { + if (time > 0) { + log.debug(`Waiting for ${time}ms`); + return new Promise((resolve) => setTimeout(resolve, time)); + } + return Promise.resolve(); +}