The end-to-end solution for building and hosting better data apps, dashboards, and reports.
Published
Edited
Jul 12, 2020
4 forks
142 stars
gateway = "██████████" // Replace this with your Gateway identifier.
counter = "example" // Edit this to change the counter.
account = "████████████" // Replace with your AWS account number.
region = "us-east-1" // Replace with your AWS region, as needed.
origin = location.origin.replace("observablehq", "████████") // Replace with your origin.
increment = {
let queue = [];
let socket;
let timeout;
let delay = 250;
// When forking, replace these as appropriate!
const gateway = "i3c3e2tpt9";
const region = "us-east-1";
const stage = "prod";
(function open() {
socket = new WebSocket(`wss://${gateway}.execute-api.${region}.amazonaws.com/${stage}?id=${encodeURIComponent(counter)}`);
socket.onopen = () => {
delay = 250;
queue.forEach(message => socket.send(message));
queue = null;
};
socket.onclose = () => {
delay *= 2;
timeout = setTimeout(open, delay + Math.random() * delay);
queue = [];
};
socket.onmessage = event => {
const data = JSON.parse(event.data);
if (isNaN(mutable count) || data.count > mutable count) {
mutable count = data.count;
}
};
})();
invalidation.then(() => {
socket.onclose = null;
socket.close();
clearTimeout(timeout);
});
return () => {
const message = JSON.stringify({type: "increment"});
if (queue) queue.push(message);
else socket.send(message);
++mutable count;
};
}
mutable count = counter, NaN
stage = "prod" // Replace if you choose a different stage name.
html`<style>
pre {
box-sizing: border-box;
border-left: solid 4px #e2e5e9;
margin-left: -14px;
padding-left: 10px;
}
body {
counter-reset: item;
}
.counter::before {
counter-increment: item;
content: counter(item) ". ";
}
</style>`
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.