Example Golden Gate Webcam
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See alternative ActorsExample Golden Gate Webcam
apify/example-golden-gate-webcam
Example actor that opens a webpage with Golden Gate webcam. It takes a screenshot from the cam and saves it as output to the key-value store. You can easily use it as API that returns a screenshot with https://api.apify.com/v2/acts/apify~example-golden-gate-webcam/run-sync?token=[YOUR_API_TOKEN]
Dockerfile
1# This is a template for a Dockerfile used to run acts in Actor system.
2# The base image name below is set during the act build, based on user settings.
3# IMPORTANT: The base image must set a correct working directory, such as /usr/src/app or /home/user
4FROM apify/actor-node-chrome:v0.21.10
5
6# Second, copy just package.json and package-lock.json since it should be
7# the only file that affects "npm install" in the next step, to speed up the build
8COPY package*.json ./
9
10# Install NPM packages, skip optional and development dependencies to
11# keep the image small. Avoid logging too much and print the dependency
12# tree for debugging
13RUN npm --quiet set progress=false \
14 && npm install --only=prod --no-optional \
15 && echo "Installed NPM packages:" \
16 && (npm list --all || true) \
17 && echo "Node.js version:" \
18 && node --version \
19 && echo "NPM version:" \
20 && npm --version
21
22# Copy source code to container
23# Do this in the last step, to have fast build if only the source code changed
24COPY . ./
25
26# NOTE: The CMD is already defined by the base image.
27# Uncomment this for local node inspector debugging:
28# CMD [ "node", "--inspect=0.0.0.0:9229", "main.js" ]package.json
1{
2 "name": "apify-project",
3 "version": "0.0.1",
4 "description": "",
5 "author": "It's not you it's me",
6 "license": "ISC",
7 "dependencies": {
8 "apify": "0.21.10"
9 },
10 "scripts": {
11 "start": "node main.js"
12 }
13}main.js
1const Apify = require('apify');
2
3Apify.main(async () => {
4 // Launch web browser.
5 const browser = await Apify.launchPuppeteer({ headless: true });
6
7 // Load http://goldengatebridge75.org/news/webcam.html and get an IFRAME with the webcam stream
8 console.log('Opening web page...');
9 const page = await browser.newPage();
10 await page.goto('http://goldengatebridge75.org/news/webcam.html');
11 const frames = await page.frames();
12 const iframeWithVideo = frames[1];
13
14 // Wait for the webcam to load.
15 console.log('Waiting for the webcam image.');
16 const imageElementHandle = await iframeWithVideo.waitForSelector('.VideoColm img[src^="blob:"]');
17 // Wait a little more to give the browser a chance to display the image.
18 await page.waitFor(1000);
19
20 // Get a screenshot of that image.
21 const imageBuffer = await imageElementHandle.screenshot();
22 console.log('Screenshot captured.');
23
24 // Save the screenshot as the actor's output. By convention, similarly to "INPUT",
25 // the actor's output is stored in the default key-value store under the "OUTPUT" key.
26 await Apify.setValue('OUTPUT', imageBuffer, { contentType: 'image/jpeg' });
27 console.log('Actor finished.');
28});Developer
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