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Netlify Edge Functions POC (do not merge) #384

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Netlify Edge Functions POC (do not merge) #384

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0aa43c8
WIP
davidkpiano Aug 24, 2022
56ebbcd
WIP
davidkpiano Aug 24, 2022
385af7d
Improving view
davidkpiano Aug 25, 2022
8ecc50b
Async polling and better error handling
davidkpiano Aug 25, 2022
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11 changes: 8 additions & 3 deletions src/CanvasContainer.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ import {
PointDelta,
} from './dragSessionTracker';
import { AnyState } from './types';
import { Box, BoxProps } from '@chakra-ui/react';

const dragModel = createModel(
{
Expand Down Expand Up @@ -272,9 +273,12 @@ const getCursorByState = (state: AnyState) =>
) as { cursor?: CSSProperties['cursor'] }
)?.cursor;

export const CanvasContainer: React.FC<{ panModeEnabled: boolean }> = ({
type CanvasContainerProps = { panModeEnabled: boolean } & BoxProps;

export const CanvasContainer: React.FC<CanvasContainerProps> = ({
children,
panModeEnabled,
...boxProps
}) => {
const canvasService = useCanvas();
const embed = useEmbed();
Expand Down Expand Up @@ -456,14 +460,15 @@ export const CanvasContainer: React.FC<{ panModeEnabled: boolean }> = ({
}, [canvasService, embed]);

return (
<div
<Box
ref={canvasRef}
style={{
cursor: getCursorByState(state),
WebkitFontSmoothing: 'auto',
}}
{...boxProps}
>
{children}
</div>
</Box>
);
};
9 changes: 8 additions & 1 deletion src/CanvasView.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,9 @@ export const CanvasView: React.FC = () => {
const isLayoutPending = useSelector(simService, (state) =>
state.hasTag('layoutPending'),
);
const isSimPending = useSelector(simService, (state) =>
state.hasTag('pending'),
);
const isEmpty = useSelector(simService, (state) => state.hasTag('empty'));
const digraph = useMemo(
() => (machine ? toDirectedGraph(machine) : undefined),
Expand Down Expand Up @@ -95,7 +98,11 @@ export const CanvasView: React.FC = () => {
<CanvasHeader />
</Box>
)}
<CanvasContainer panModeEnabled={panModeEnabled}>
<CanvasContainer
panModeEnabled={panModeEnabled}
opacity={isSimPending ? 0.7 : 1}
transition="opacity 0.2s ease-in-out"
>
{digraph && <Graph digraph={digraph} />}
{isLayoutPending && (
<Overlay>
Expand Down
192 changes: 139 additions & 53 deletions src/simulationMachine.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ import produce from 'immer';
import {
ActorRefFrom,
AnyInterpreter,
createMachine,
EventFrom,
InterpreterStatus,
SCXML,
Expand Down Expand Up @@ -62,6 +63,13 @@ export const simModel = createModel(
},
);

async function asyncPoll(fn: () => Promise<any>, interval: number) {
while (true) {
await fn();
await new Promise((resolve) => setTimeout(resolve, interval));
}
}

export const simulationMachine = simModel.createMachine(
{
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Visualisation

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preserveActionOrder: true,
Expand All @@ -81,66 +89,144 @@ export const simulationMachine = simModel.createMachine(
invoke: {
id: 'proxy',
src: () => (sendBack, onReceive) => {
const serverUrl = new URLSearchParams(window.location.search).get(
'server',
);
const searchParams = new URLSearchParams(window.location.search);
const serverUrl = searchParams.get('server');
const functionUrl = searchParams.get('url');
const pollParam = searchParams.get('poll');
const poll = pollParam && !isNaN(+pollParam) ? +pollParam : 1000;

let receiver: InspectReceiver;
if (serverUrl) {
const [protocol, ...server] = serverUrl.split('://');
receiver = createWebSocketReceiver({
protocol: protocol as 'ws' | 'wss',
server: server.join('://'),
if (functionUrl) {
let registered = false;
let lastTimestamp: string;

asyncPoll(async () => {
try {
fetch(functionUrl)
.then((data) => data.json())
.catch((err) => {
console.error(err);
})
.then((data) => {
const machineData = data;
if (!machineData) {
console.error('No machine data received');
return;
}

const machine = createMachine(machineData.machine);
const state = machine.resolveState(machineData.state);

if (!registered) {
sendBack(
simModel.events['SERVICE.REGISTER']({
sessionId: machineData.id,
machine,
state,
parent: undefined,
source: 'inspector',
}),
);
lastTimestamp = machineData.updated_at;
registered = true;
} else {
if (lastTimestamp !== machineData.updated_at) {
sendBack(
simModel.events['SERVICE.STATE'](
machineData.id,
state,
),
);
lastTimestamp = machineData.updated_at;
}
}
sendBack({ type: 'SERVICE.READY' });
});
} catch (e) {
console.error(e);
}
}, poll);

onReceive((event) => {
if (event.type === 'xstate.event') {
fetch(functionUrl, {
method: 'POST',
body: JSON.stringify(event.event),
});
sendBack({ type: 'SERVICE.PENDING' });
}
});
} else {
receiver = createWindowReceiver({
// for some random reason the `window.top` is being rewritten to `window.self`
// looks like maybe some webpack replacement plugin (or similar) plays tricks on us
// this breaks the auto-detection of the correct `targetWindow` in the `createWindowReceiver`
// so we pass it explicitly here
targetWindow: window.opener || window.parent,
});
}

onReceive((event) => {
if (event.type === 'xstate.event') {
receiver.send({
...event,
type: 'xstate.event',
event: JSON.stringify(event.event),
if (serverUrl) {
const [protocol, ...server] = serverUrl.split('://');
receiver = createWebSocketReceiver({
protocol: protocol as 'ws' | 'wss',
server: server.join('://'),
});
} else {
receiver = createWindowReceiver({
// for some random reason the `window.top` is being rewritten to `window.self`
// looks like maybe some webpack replacement plugin (or similar) plays tricks on us
// this breaks the auto-detection of the correct `targetWindow` in the `createWindowReceiver`
// so we pass it explicitly here
targetWindow: window.opener || window.parent,
});
}
});

return receiver.subscribe((event) => {
switch (event.type) {
case 'service.register':
let state = event.machine.resolveState(event.state);
sendBack(
simModel.events['SERVICE.REGISTER']({
sessionId: event.sessionId,
machine: event.machine,
state,
parent: event.parent,
source: 'inspector',
}),
);
break;
case 'service.state':
sendBack(
simModel.events['SERVICE.STATE'](
event.sessionId,
event.state,
),
);
break;
case 'service.stop':
sendBack(simModel.events['SERVICE.STOP'](event.sessionId));
break;
default:
break;
}
}).unsubscribe;
onReceive((event) => {
if (event.type === 'xstate.event') {
receiver.send({
...event,
type: 'xstate.event',
event: JSON.stringify(event.event),
});
}
});

return receiver.subscribe((event) => {
switch (event.type) {
case 'service.register':
let state = event.machine.resolveState(event.state);
sendBack(
simModel.events['SERVICE.REGISTER']({
sessionId: event.sessionId,
machine: event.machine,
state,
parent: event.parent,
source: 'inspector',
}),
);
break;
case 'service.state':
sendBack(
simModel.events['SERVICE.STATE'](
event.sessionId,
event.state,
),
);
break;
case 'service.stop':
sendBack(simModel.events['SERVICE.STOP'](event.sessionId));
break;
default:
break;
}
}).unsubscribe;
}
},
},
initial: 'idle',
states: {
idle: {
on: {
'SERVICE.PENDING': 'pending',
},
},
pending: {
tags: 'pending',
on: {
'SERVICE.READY': 'idle',
},
},
},
},
Expand Down