Created
December 22, 2022 16:21
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| 16 |
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| <app> | |
| <h1>Tasks</h1> | |
| <p><button onclick={coolTask}>Cool Task</button></p> | |
| <p><button onclick={longCoolTask}>Long Cool Task</button></p> | |
| <p><button onclick={warmTask}>Warm Task</button></p> | |
| <script> | |
| let _queue = [] | |
| export default { | |
| onMounted(props, state) { | |
| this.coolConsumerOne() | |
| this.warmConsumerOne() | |
| }, | |
| queue(exchange, job) { | |
| _queue.push({ | |
| exchange, | |
| job | |
| }) | |
| }, | |
| coolTask() { | |
| this.queue('cool', () => { | |
| console.log('cool task') | |
| }) | |
| }, | |
| longCoolTask() { | |
| this.queue('cool', () => { | |
| setTimeout(() => { | |
| console.log('long cool task') | |
| }, 2000); | |
| }) | |
| }, | |
| warmTask() { | |
| this.queue('warm', () => { | |
| console.log('warm task') | |
| }) | |
| }, | |
| coolConsumerOne(busy = 0, index = 0) { | |
| // I only take cool tasks | |
| setTimeout(() => { | |
| // console.log('coolConsumerOne', _queue); | |
| if (busy) { | |
| this.coolConsumerOne(true) | |
| // console.log('coolConsumerOne is busy') | |
| return | |
| } | |
| if (!_queue.length) { | |
| this.coolConsumerOne() | |
| // console.log('There are no tasks to do') | |
| return | |
| } | |
| let task = _queue[index] | |
| if (!task) { | |
| this.coolConsumerOne() | |
| // console.log('There are no tasks to do') | |
| return | |
| } | |
| if (task.pending === true) { | |
| this.coolConsumerOne(false, index + 1) | |
| // console.log(`task ${index} is pending`) | |
| return | |
| } | |
| task.pending = true | |
| if (task.exchange !== 'cool') { | |
| task.pending = false | |
| this.coolConsumerOne() | |
| // console.log('There are no tasks for coolConsumerOne to do') | |
| return | |
| } | |
| this.coolConsumerOne(true) | |
| _queue.splice(index, 1) | |
| task.job() | |
| this.coolConsumerOne() | |
| }, 300) | |
| }, | |
| warmConsumerOne(busy, index = 0) { | |
| // I only take warm tasks | |
| setTimeout(() => { | |
| // console.log('warmConsumerOne', _queue); | |
| if (busy) { | |
| this.warmConsumerOne(true) | |
| // console.log('warmConsumerOne is busy') | |
| return | |
| } | |
| if (!_queue.length) { | |
| this.warmConsumerOne() | |
| // console.log('There are no tasks to do') | |
| return | |
| } | |
| let task = _queue[index] | |
| if (!task) { | |
| this.warmConsumerOne() | |
| // console.log('There are no tasks to do') | |
| return | |
| } | |
| if (task.pending === true) { | |
| task.pending = false | |
| this.warmConsumerOne(false, index + 1) | |
| // console.log(`task ${index} is pending`) | |
| return | |
| } | |
| task.pending = true | |
| if (task.exchange !== 'warm') { | |
| this.warmConsumerOne() | |
| // console.log('There are no tasks for warmConsumerOne to do') | |
| return | |
| } | |
| this.warmConsumerOne(true) | |
| _queue.splice(index, 1) | |
| task.job() | |
| this.warmConsumerOne() | |
| }, 300) | |
| } | |
| } | |
| </script> | |
| </app> |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Tasks</title> | |
| <script src="//unpkg.com/[email protected]/page.js"></script> | |
| <script src="app.riot" type="riot"></script> | |
| <script src="//unpkg.com/riot@7/riot+compiler.min.js"></script> | |
| </head> | |
| <body> | |
| <app></app> | |
| <script> | |
| (async function() { | |
| await riot.compile() | |
| riot.mount('app') | |
| })() | |
| </script> | |
| </body> | |
| </html> |
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| { | |
| "name": "task", | |
| "version": "1.0.0", | |
| "description": "", | |
| "main": "index.js", | |
| "scripts": { | |
| "dev": "http-server --proxy http://localhost:8080?" | |
| }, | |
| "keywords": [], | |
| "author": "", | |
| "license": "ISC", | |
| "dependencies": { | |
| "http-server": "^14.1.1" | |
| } | |
| } |
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