Initial commit.

Less hacky than the backend stuff, but not by too much.
Can request and display one-shot/real-time data.
Can fetch current clusters/topics from the backend.
Can (barely) configure a new cluster for the backend to use.
A lot of boilerplate from sveltekit is still kicking around.
This commit is contained in:
Sage Vaillancourt 2022-08-18 16:57:17 -04:00 committed by Sage Vaillancourt
commit d926a9cd36
39 changed files with 7214 additions and 0 deletions

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.DS_Store
node_modules
/build
/.svelte-kit
/package
.env
.env.*
!.env.example
# Ignore files for PNPM, NPM and YARN
pnpm-lock.yaml
package-lock.json
yarn.lock

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module.exports = {
root: true,
extends: ['eslint:recommended', 'prettier'],
plugins: ['svelte3'],
overrides: [{ files: ['*.svelte'], processor: 'svelte3/svelte3' }],
parserOptions: {
sourceType: 'module',
ecmaVersion: 2020
},
env: {
browser: true,
es2017: true,
node: true
}
};

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.DS_Store
node_modules
/build
/.svelte-kit
/package
.env
.env.*
!.env.example
.vercel
.output
.idea/

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engine-strict=true

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.DS_Store
node_modules
/build
/.svelte-kit
/package
.env
.env.*
!.env.example
# Ignore files for PNPM, NPM and YARN
pnpm-lock.yaml
package-lock.json
yarn.lock

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{
"useTabs": true,
"singleQuote": true,
"trailingComma": "none",
"printWidth": 100
}

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# create-svelte
Everything you need to build a Svelte project, powered by [`create-svelte`](https://github.com/sveltejs/kit/tree/master/packages/create-svelte).
## Creating a project
If you're seeing this, you've probably already done this step. Congrats!
```bash
# create a new project in the current directory
npm create svelte@latest
# create a new project in my-app
npm create svelte@latest my-app
```
## Developing
Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
```bash
npm run dev
# or start the server and open the app in a new browser tab
npm run dev -- --open
```
## Building
To create a production version of your app:
```bash
npm run build
```
You can preview the production build with `npm run preview`.
> To deploy your app, you may need to install an [adapter](https://kit.svelte.dev/docs/adapters) for your target environment.

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{
"extends": "./.svelte-kit/tsconfig.json",
"compilerOptions": {
"allowJs": true,
"checkJs": true,
"esModuleInterop": true,
"forceConsistentCasingInFileNames": true,
"resolveJsonModule": true,
"skipLibCheck": true,
"sourceMap": true,
"strict": true
}
}

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{
"name": "my-app",
"version": "0.0.1",
"scripts": {
"dev": "vite dev",
"build": "vite build",
"package": "svelte-kit package",
"preview": "vite preview",
"check": "svelte-check --tsconfig ./jsconfig.json",
"check:watch": "svelte-check --tsconfig ./jsconfig.json --watch",
"lint": "prettier --check --plugin-search-dir=. . && eslint .",
"format": "prettier --write --plugin-search-dir=. ."
},
"devDependencies": {
"@sveltejs/adapter-auto": "next",
"@sveltejs/kit": "next",
"@types/cookie": "^0.5.1",
"eslint": "^8.16.0",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-svelte3": "^4.0.0",
"prettier": "^2.6.2",
"prettier-plugin-svelte": "^2.7.0",
"svelte": "^3.46.0",
"svelte-check": "^2.7.1",
"typescript": "^4.7.4",
"vite": "^3.0.0"
},
"type": "module",
"dependencies": {
"@zerodevx/svelte-json-view": "^0.2.1",
"@fontsource/fira-mono": "^4.5.0",
"cookie": "^0.4.1",
"highlight.js": "^11.6.0",
"svelte-highlight": "^6.2.1"
}
}

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@import '@fontsource/fira-mono';
:root {
font-family: Arial, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu,
Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
--font-mono: 'Fira Mono', monospace;
--pure-white: #ffffff;
--primary-color: #e7f4ff;
--secondary-color: #d0dde9;
--tertiary-color: #edf0f8;
--accent-color: #ff0df8;
--heading-color: rgba(0, 0, 0, 0.7);
--text-color: #444444;
--background-without-opacity: rgba(255, 255, 255, 0.7);
--column-width: 42rem;
--column-margin-top: 4rem;
}
body {
min-height: 100vh;
margin: 0;
background-color: var(--primary-color);
/*
background: linear-gradient(
180deg,
var(--primary-color) 0%,
var(--secondary-color) 10.45%,
var(--tertiary-color) 41.35%
);
*/
}
body::before {
content: '';
width: 80vw;
height: 100vh;
position: absolute;
top: 0;
left: 10vw;
z-index: -1;
/*
background: radial-gradient(
50% 50% at 50% 50%,
var(--pure-white) 0%,
rgba(255, 255, 255, 0) 100%
);
opacity: 0.05;
*/
}
#svelte {
min-height: 100vh;
display: flex;
flex-direction: column;
}
h1,
h2,
p {
font-weight: 400;
color: var(--heading-color);
}
h3 {
margin-top: 0;
}
p {
line-height: 1.5;
}
a {
color: var(--accent-color);
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
h1 {
font-size: 2rem;
text-align: center;
}
h2 {
font-size: 1rem;
}
pre {
font-size: 16px;
font-family: var(--font-mono);
background-color: rgba(255, 255, 255, 0.45);
border-radius: 3px;
box-shadow: 2px 2px 6px rgb(255 255 255 / 25%);
padding: 0.5em;
overflow-x: auto;
color: var(--text-color);
}
.bracket {
color: #d0dde9;
}
input,
button {
font-size: inherit;
font-family: inherit;
}
.settings-option {
padding: 1em;
margin-bottom: 1em;
display: flex;
flex-direction: column;
border-style: solid;
border-color: #b3ddef;
border-width: 1px;
}
button:focus:not(:focus-visible) {
outline: none;
}
@media (min-width: 720px) {
h1 {
font-size: 2.4rem;
}
}

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// See https://kit.svelte.dev/docs/types#app
// for information about these interfaces
// and what to do when importing types
declare namespace App {
interface Locals {
userid: string;
}
// interface Platform {}
// interface PrivateEnv {}
// interface PublicEnv {}
// interface Session {}
// interface Stuff {}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%sveltekit.assets%/favicon.png" />
<meta name="viewport" content="width=device-width" />
%sveltekit.head%
</head>
<body>
<div>%sveltekit.body%</div>
</body>
</html>

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import * as cookie from 'cookie';
/** @type {import('@sveltejs/kit').Handle} */
export const handle = async ({ event, resolve }) => {
const cookies = cookie.parse(event.request.headers.get('cookie') || '');
event.locals.userid = cookies['userid'] || crypto.randomUUID();
const response = await resolve(event);
if (!cookies['userid']) {
// if this is the first time the user has visited this app,
// set a cookie so that we recognise them when they return
response.headers.set(
'set-cookie',
cookie.serialize('userid', event.locals.userid, {
path: '/',
httpOnly: true
})
);
}
return response;
};

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<script>
import { spring } from 'svelte/motion';
let count = 0;
const displayed_count = spring();
$: displayed_count.set(count);
$: offset = modulo($displayed_count, 1);
/**
* @param {number} n
* @param {number} m
*/
function modulo(n, m) {
// handle negative numbers
return ((n % m) + m) % m;
}
</script>
<div class="counter">
<button on:click={() => (count -= 1)} aria-label="Decrease the counter by one">
<svg aria-hidden="true" viewBox="0 0 1 1">
<path d="M0,0.5 L1,0.5" />
</svg>
</button>
<div class="counter-viewport">
<div class="counter-digits" style="transform: translate(0, {100 * offset}%)">
<strong class="hidden" aria-hidden="true">{Math.floor($displayed_count + 1)}</strong>
<strong>{Math.floor($displayed_count)}</strong>
</div>
</div>
<button on:click={() => (count += 1)} aria-label="Increase the counter by one">
<svg aria-hidden="true" viewBox="0 0 1 1">
<path d="M0,0.5 L1,0.5 M0.5,0 L0.5,1" />
</svg>
</button>
</div>
<style>
.counter {
display: flex;
border-top: 1px solid rgba(0, 0, 0, 0.1);
border-bottom: 1px solid rgba(0, 0, 0, 0.1);
margin: 1rem 0;
}
.counter button {
width: 2em;
padding: 0;
display: flex;
align-items: center;
justify-content: center;
border: 0;
background-color: transparent;
touch-action: manipulation;
color: var(--text-color);
font-size: 2rem;
}
.counter button:hover {
background-color: var(--secondary-color);
}
svg {
width: 25%;
height: 25%;
}
path {
vector-effect: non-scaling-stroke;
stroke-width: 2px;
stroke: var(--text-color);
}
.counter-viewport {
width: 8em;
height: 4em;
overflow: hidden;
text-align: center;
position: relative;
}
.counter-viewport strong {
position: absolute;
display: flex;
width: 100%;
height: 100%;
font-weight: 400;
color: var(--accent-color);
font-size: 4rem;
align-items: center;
justify-content: center;
}
.counter-digits {
position: absolute;
width: 100%;
height: 100%;
}
.hidden {
top: -100%;
user-select: none;
}
</style>

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export const queryMode = {
REAL_TIME: 'realTime',
ONE_SHOT: 'oneShot'
}

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import { invalidate } from '$app/navigation';
// this action (https://svelte.dev/tutorial/actions) allows us to
// progressively enhance a <form> that already works without JS
/**
* @param {HTMLFormElement} form
* @param {{
* pending?: ({ data, form }: { data: FormData; form: HTMLFormElement }) => void;
* error?: ({
* data,
* form,
* response,
* error
* }: {
* data: FormData;
* form: HTMLFormElement;
* response: Response | null;
* error: Error | null;
* }) => void;
* result?: ({
* data,
* form,
* response
* }: {
* data: FormData;
* response: Response;
* form: HTMLFormElement;
* }) => void;
* }} [opts]
*/
export function enhance(form, { pending, error, result } = {}) {
let current_token;
/** @param {SubmitEvent} e */
async function handle_submit(e) {
const token = (current_token = {});
e.preventDefault();
const data = new FormData(form);
if (pending) pending({ data, form });
try {
const response = await fetch(form.action, {
method: form.method,
headers: {
accept: 'application/json'
},
body: data
});
if (token !== current_token) return;
if (response.ok) {
if (result) result({ data, form, response });
const url = new URL(form.action);
url.search = url.hash = '';
invalidate(url.href);
} else if (error) {
error({ data, form, error: null, response });
} else {
console.error(await response.text());
}
} catch (e) {
if (error && e instanceof Error) {
error({ data, form, error: e, response: null });
} else {
throw e;
}
}
}
form.addEventListener('submit', handle_submit);
return {
destroy() {
form.removeEventListener('submit', handle_submit);
}
};
}

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<script>
import NavBar from "./NavBar.svelte";
import logo from './kd-full-logo.png';
</script>
<header>
<div class="corner">
<a href="/">
<img src={logo} alt="Kafka Dance Logo" />
</a>
</div>
<NavBar />
<div class="corner">
<!-- TODO put something else here? github link? -->
</div>
</header>
<style>
header {
display: flex;
justify-content: space-between;
}
.corner {
font-weight: bold;
font-size: 18px;
color: black;
height: 3em;
}
.corner a {
display: flex;
align-items: center;
justify-content: center;
width: 100%;
height: 100%;
}
.corner span {
margin-top: 0.45em;
margin-left: 0.5em;
}
.corner img {
margin-left: 0.5em;
height: 2em;
object-fit: contain;
}
nav {
display: flex;
justify-content: center;
--background: rgba(255, 255, 255, 0.7);
}
svg {
width: 2em;
height: 3em;
display: block;
}
path {
fill: var(--background);
}
ul {
position: relative;
padding: 0;
margin: 0;
height: 3em;
display: flex;
justify-content: center;
align-items: center;
list-style: none;
background: var(--background);
background-size: contain;
}
li {
position: relative;
height: 100%;
}
li.active::before {
--size: 6px;
content: '';
width: 0;
height: 0;
position: absolute;
top: 0;
left: calc(50% - var(--size));
border: var(--size) solid transparent;
border-top: var(--size) solid var(--accent-color);
}
nav a {
display: flex;
height: 100%;
align-items: center;
padding: 0 1em;
color: var(--heading-color);
font-weight: 700;
font-size: 0.8rem;
text-transform: uppercase;
letter-spacing: 0.1em;
text-decoration: none;
transition: color 0.2s linear;
}
a:hover {
color: var(--accent-color);
}
</style>

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<script>
import { page } from '$app/stores';
</script>
<nav>
<svg viewBox="0 0 2 3" aria-hidden="true">
<path d="M0,0 L1,2 C1.5,3 1.5,3 2,3 L2,0 Z" />
</svg>
<ul>
<li class:active={$page.url.pathname === '/'}>
<a sveltekit:prefetch href="/">Home</a>
</li>
<li class:active={$page.url.pathname === '/settings'}>
<a sveltekit:prefetch href="/settings">Settings</a>
</li>
<!--
<li class:active={$page.url.pathname === '/about'}>
<a sveltekit:prefetch href="/about">About</a>
</li>
<li class:active={$page.url.pathname === '/todos'}>
<a sveltekit:prefetch href="/todos">Todos</a>
</li>
-->
</ul>
<svg viewBox="0 0 2 3" aria-hidden="true">
<path d="M0,0 L0,3 C0.5,3 0.5,3 1,2 L2,0 Z" />
</svg>
</nav>
<style>
header {
display: flex;
justify-content: space-between;
}
.corner {
font-weight: bold;
font-size: 18px;
color: black;
height: 3em;
}
.corner a {
display: flex;
align-items: center;
justify-content: center;
width: 100%;
height: 100%;
}
.corner span {
margin-top: 0.45em;
margin-left: 0.5em;
}
.corner img {
margin-left: 0.5em;
height: 2em;
object-fit: contain;
}
nav {
display: flex;
justify-content: center;
--background: rgba(255, 255, 255, 0.7);
}
svg {
width: 2em;
height: 3em;
display: block;
}
path {
fill: var(--background);
}
ul {
position: relative;
padding: 0;
margin: 0;
height: 3em;
display: flex;
justify-content: center;
align-items: center;
list-style: none;
background: var(--background);
background-size: contain;
}
li {
position: relative;
height: 100%;
}
li.active::before {
--size: 6px;
content: '';
width: 0;
height: 0;
position: absolute;
top: 0;
left: calc(50% - var(--size));
border: var(--size) solid transparent;
border-top: var(--size) solid var(--accent-color);
}
nav a {
display: flex;
height: 100%;
align-items: center;
padding: 0 1em;
color: var(--heading-color);
font-weight: 700;
font-size: 0.8rem;
text-transform: uppercase;
letter-spacing: 0.1em;
text-decoration: none;
transition: color 0.2s linear;
}
a:hover {
color: var(--accent-color);
}
</style>

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<svg xmlns="http://www.w3.org/2000/svg" width="107" height="128" viewBox="0 0 107 128"><title>svelte-logo</title><path d="M94.1566,22.8189c-10.4-14.8851-30.94-19.2971-45.7914-9.8348L22.2825,29.6078A29.9234,29.9234,0,0,0,8.7639,49.6506a31.5136,31.5136,0,0,0,3.1076,20.2318A30.0061,30.0061,0,0,0,7.3953,81.0653a31.8886,31.8886,0,0,0,5.4473,24.1157c10.4022,14.8865,30.9423,19.2966,45.7914,9.8348L84.7167,98.3921A29.9177,29.9177,0,0,0,98.2353,78.3493,31.5263,31.5263,0,0,0,95.13,58.117a30,30,0,0,0,4.4743-11.1824,31.88,31.88,0,0,0-5.4473-24.1157" style="fill:#ff3e00"/><path d="M45.8171,106.5815A20.7182,20.7182,0,0,1,23.58,98.3389a19.1739,19.1739,0,0,1-3.2766-14.5025,18.1886,18.1886,0,0,1,.6233-2.4357l.4912-1.4978,1.3363.9815a33.6443,33.6443,0,0,0,10.203,5.0978l.9694.2941-.0893.9675a5.8474,5.8474,0,0,0,1.052,3.8781,6.2389,6.2389,0,0,0,6.6952,2.485,5.7449,5.7449,0,0,0,1.6021-.7041L69.27,76.281a5.4306,5.4306,0,0,0,2.4506-3.631,5.7948,5.7948,0,0,0-.9875-4.3712,6.2436,6.2436,0,0,0-6.6978-2.4864,5.7427,5.7427,0,0,0-1.6.7036l-9.9532,6.3449a19.0329,19.0329,0,0,1-5.2965,2.3259,20.7181,20.7181,0,0,1-22.2368-8.2427,19.1725,19.1725,0,0,1-3.2766-14.5024,17.9885,17.9885,0,0,1,8.13-12.0513L55.8833,23.7472a19.0038,19.0038,0,0,1,5.3-2.3287A20.7182,20.7182,0,0,1,83.42,29.6611a19.1739,19.1739,0,0,1,3.2766,14.5025,18.4,18.4,0,0,1-.6233,2.4357l-.4912,1.4978-1.3356-.98a33.6175,33.6175,0,0,0-10.2037-5.1l-.9694-.2942.0893-.9675a5.8588,5.8588,0,0,0-1.052-3.878,6.2389,6.2389,0,0,0-6.6952-2.485,5.7449,5.7449,0,0,0-1.6021.7041L37.73,51.719a5.4218,5.4218,0,0,0-2.4487,3.63,5.7862,5.7862,0,0,0,.9856,4.3717,6.2437,6.2437,0,0,0,6.6978,2.4864,5.7652,5.7652,0,0,0,1.602-.7041l9.9519-6.3425a18.978,18.978,0,0,1,5.2959-2.3278,20.7181,20.7181,0,0,1,22.2368,8.2427,19.1725,19.1725,0,0,1,3.2766,14.5024,17.9977,17.9977,0,0,1-8.13,12.0532L51.1167,104.2528a19.0038,19.0038,0,0,1-5.3,2.3287" style="fill:#fff"/></svg>

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<script context="module">export {};
</script>
<script>export let language = {
name: undefined,
register: undefined,
};
export let code = undefined;
export let langtag = false;
import hljs from "highlight.js/lib/core";
import { createEventDispatcher, afterUpdate } from "svelte";
const dispatch = createEventDispatcher();
let highlighted = undefined;
afterUpdate(() => {
if (highlighted) {
dispatch("highlight", { highlighted });
}
});
$: if (language.name && language.register) {
hljs.registerLanguage(language.name, language.register);
highlighted = hljs.highlight(code, { language: language.name }).value;
}
</script>
<slot {highlighted}>
<!-- prettier-ignore -->
<div class="highlight-editor">
<pre
class:langtag
data-language={language.name || "plaintext"}
{...$$restProps}><code class="hljs">{#if highlighted !== undefined}{@html highlighted}{:else}{code}{/if}</code></pre>
<textarea spellcheck="false" bind:value={code}></textarea>
</div>
</slot>
<style>
/*textarea {
resize: none;
overflow: hidden;
z-index: 1;
position: absolute;
float: bottom;
margin-top: -246px;
margin-left: 0;
min-height: 196px;
max-height: 196px;
background: transparent;
color: rgba(0,0,0,0);
caret-color: #d0dde9;
background-color: #222222;
color: #d0dde9;
border: none;
font-size: 14px;
font-family: var(--font-mono);
padding: 1em;
overflow-x: auto;
width: 25vw;
}
*/
pre {
z-index: 0;
padding: 0;
border-radius: 0;
}
code {
z-index: 0;
min-height: 200px;
max-height: 200px;
width: 25vw;
}
.langtag {
position: relative;
}
.langtag::after {
content: attr(data-language);
position: absolute;
top: 0;
right: 0;
padding: 1em;
display: flex;
align-items: center;
justify-content: center;
background: inherit;
color: inherit;
background: var(--hljs-background);
color: var(--hljs-foreground);
border-radius: var(--hljs-radius);
}
</style>

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// noinspection JSCheckFunctionSignatures
import { writable } from 'svelte/store'
import {queryMode} from "./constants.js";
const mockItems = [
{
"eventType": "Television",
"broughtToYouBy": "AMC",
"title": "Breaking Bad"
},
{
"eventType": "Television",
"broughtToYouBy": "CBS",
"title": "Breaking Bad Bang Theory"
},
{
"eventType": "Movie",
"broughtToYouBy": "20th Century Fox",
"title": "Star Wars 2"
},
].map(o => ({value: o, timestamp: new Date().getTime()}))
const testMode = true
export const state = writable({
items: [],
itemCount: undefined,
error: null,
})
const updateClearError = updater => state.update(s => {
s.error = null
return updater(s)
})
let itemLimit = Infinity
let ws;
let disconnected = false
const getRandomFromArray = array => array[Math.floor(Math.random() * array.length)]
export const query = async ({ cluster, topic, mode, jsFilter, queryCode, maxItems, mutableObjects }) => {
updateClearError(s => ({...s, items: [], itemCount: 0}))
if (disconnected) {
connect()
disconnected = false
}
if (testMode) {
try {
const f = new Function('message', 'value', queryCode)
if (mode === queryMode.REAL_TIME) {
const addItem = () => {
const item = getRandomFromArray(mockItems)
if (!jsFilter || f(item, item.value)) {
item.timestamp = new Date().getTime()
updateClearError(s => ({...s, items: [item, ...s.items].slice(0, itemLimit), itemCount: 0}))
}
setTimeout(addItem, 2000)
}
setTimeout(addItem, 2000)
} else {
updateClearError(s => ({...s, items: mockItems.filter(item => !jsFilter || f(item, item.value)), itemCount: 0}))
}
} catch (e) {
updateClearError(s => ({ ...s, error: e.toString() }))
}
} else {
updateClearError(s => ({ ...s, items: [], itemCount: 0 }))
}
itemLimit = maxItems
ws.send(JSON.stringify({
cluster,
mode,
topic,
maxItems,
immutable: !mutableObjects,
searchCode: jsFilter && queryCode
}))
}
export const connect = () => {
ws = new WebSocket(`ws://localhost:3000`)
if (!ws) {
updateClearError(s => ({...s, error: 'Unable to connect to websocket.'}))
return
}
ws.addEventListener('close', () => { disconnected = true })
ws.addEventListener('open', () => {
console.log('WebSocket opened')
// ws.send(JSON.stringify({
// searchCode: 'return message.value?.UserId === "MINTERCI"'
// }))
})
ws.addEventListener('message', message => {
//console.log('WebSocket message received', message)
let data;
try {
data = JSON.parse(message.data)
switch (data.type) {
case 'complete':
updateClearError(s => ({
...s,
items: data.message
}))
break;
case 'item_count':
updateClearError(s => ({
...s,
itemCount: console.log('state', s) || data.message
}))
break;
case 'message':
updateClearError(s => ({
...s,
items: [data.message, ...s.items].slice(0, itemLimit)
}))
break;
}
} catch (e) {
data = message.data
}
})
ws.addEventListener('close', () => {
console.log('WebSocket closed')
})
}

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<script>
import Header from '$lib/header/Header.svelte';
import '../app.css';
</script>
<Header />
<main>
<slot />
</main>
<!--<footer></footer>-->
<style>
main {
flex: 1;
display: flex;
flex-direction: column;
padding: 1rem;
width: 100%;
/*
max-width: 1024px;
*/
margin: 0 auto;
box-sizing: border-box;
}
footer {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
padding: 40px;
}
footer a {
font-weight: bold;
}
@media (min-width: 480px) {
footer {
padding: 40px 0;
}
}
</style>

1
src/routes/+page.js Normal file
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export const prerender = true;

242
src/routes/+page.svelte Normal file
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<script>
import { onMount } from 'svelte'
import { JsonView } from '@zerodevx/svelte-json-view'
import { state, connect, query } from '$lib/state';
import { queryMode } from "../lib/constants.js";
let expandAll = false
let showMetadata = false
const querySettings = {
topic: null,
cluster: null,
mode: queryMode.REAL_TIME,
jsFilter: true,
maxItems: 20,
mutableObjects: false,
queryCode:
`// The message object contains all metadata
// \`value\` is shorthand for message.value
return message.value.eventType === "Television";`
}
const makeRequest = async () => query(querySettings)
let topics = []
let clusters = []
const updateTopics = async () => {
topics = []
const response = await fetch(`http://localhost:3000/topics/${querySettings.cluster}`)
topics = await response.json()
topics.sort()
console.log('topics', topics)
querySettings.topic = topics[0]
}
onMount(async () => {
connect();
const response = await fetch(`http://localhost:3000/clusters`)
clusters = Object.keys(await response.json())
querySettings.cluster = clusters[0]
await updateTopics()
})
</script>
<svelte:head>
<title>{querySettings.topic} - Kafka Dance</title>
<meta name="description" content="Kafka Dance" />
</svelte:head>
<section>
<div class="query-settings">
<!--
<Header />
<NavBar />
-->
<h1>Message Search</h1>
{#if $state.error}
<div class="state-error">{$state.error}</div>
{/if}
<div class="settings-option">
<h3>Cluster</h3>
<select disabled={clusters.length === 0} bind:value={querySettings.cluster} name="cluster" id="cluster" on:change={updateTopics}>
{#each clusters as cluster}
<option value={cluster}>{cluster}</option>
{/each}
</select>
</div>
<div class="settings-option">
<h3>Topic</h3>
<select disabled={topics.length === 0} bind:value={querySettings.topic} name="topic" id="topic">
{#each topics as topic}
<option value={topic}>{topic}</option>
{/each}
</select>
</div>
<div class="settings-option">
<label>
Maximum Results
<input type=number bind:value={querySettings.maxItems} min=0 max=10000>
</label>
</div>
<br/>
<div class="settings-option">
<div class="query-input-header">Use JavaScript to filter messages <input type=checkbox bind:checked={querySettings.jsFilter}></div>
{#if querySettings.jsFilter}
<div class="query-input-display">
<div title="If enabled, mutations made by the below code will be displayed in the result data.">
Allow JavaScript to mutate objects <input type=checkbox bind:checked={querySettings.mutableObjects}>
</div>
<textarea class="query-input" bind:value={querySettings.queryCode}></textarea>
</div>
{/if}
</div>
<div class="settings-option query-type">
<span>Query Type:</span>
<span>
<label title="Consume and display new events as they are produced.">
<input type=radio bind:group={querySettings.mode} name="mode" value={queryMode.REAL_TIME}>
Real Time
</label>
<label title="Query all messages that currently exist, then stop.">
<input type=radio bind:group={querySettings.mode} name="mode" value={queryMode.ONE_SHOT}>
One Shot
</label>
</span>
</div>
<div class="query-button">
<button on:click={makeRequest}>Start Query</button>
</div>
<br>
<div class="live-settings">
<div>Expand All Objects <input type=checkbox bind:checked={expandAll}></div>
<div>Show Metadata <input type=checkbox bind:checked={showMetadata}></div>
<!--{#if $state.itemCount >= 0}
<h2>{$state.itemCount} Matches Found...</h2>
{/if}-->
</div>
</div>
{#if $state.items?.length > 0}
<div class="json-view">
<JsonView json={showMetadata ? $state.items : $state.items.map(item => item.value)}
depth={expandAll ? Infinity : 1}/>
</div>
{:else }
<div class="json-view no-query-data">
<h2>No query data</h2>
</div>
{/if}
</section>
<style>
section {
display: flex;
flex-direction: row;
flex: 1;
justify-content: space-between;
}
h1 {
width: 100%;
}
textarea {
overflow: hidden;
z-index: 1;
margin-left: 0;
background-color: #222222;
color: #d0dde9;
border: none;
font-size: 14px;
font-family: var(--font-mono);
padding: 1em;
overflow-x: auto;
min-width: 20vw;
}
.query-settings {
margin-right: 1rem;
flex-grow: 1;
display: flex;
flex-direction: column;
}
.query-input-display {
margin-top: 1em;
display: flex;
flex-direction: column;
}
.query-input {
min-height: 4vw;
}
.query-type {
display: flex;
flex-direction: row;
justify-content: space-between;
}
.query-type label {
padding-left: 0.5em;
}
.query-button {
text-align: right;
border-radius: 0;
border-style: none;
}
.state-error {
color: #ff2222;
font-weight: bold;
}
/* JsonView config
:root {
--nodePaddingLeft: 1rem;
--nodeBorderLeft: 1px dotted #9ca3af;
--nodeColor: #6d81a4;
--bracketHoverBackground: #d1d5db;
--leafDefaultColor: #9ca3af;
--leafStringColor: #14cb8f;
--leafNumberColor: #d97706;
--leafBooleanColor: #2563eb;
}
.bracket {
color: #d0dde9;
}
*/
.json-view {
border-radius: 4px;
flex-grow: 6;
padding: 1em;
background-color: #e2eaff;
height: 86vh;
overflow-y: scroll;
}
.no-query-data {
display: flex;
align-items: center;
justify-content: center;
}
.no-query-data h2 {
font-size: 32px;
color: rgba(0, 0, 0, 0.3);
}
</style>

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src/routes/about/+page.js Normal file
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import { browser, dev } from '$app/env';
// we don't need any JS on this page, though we'll load
// it in dev so that we get hot module replacement...
export const hydrate = dev;
// ...but if the client-side router is already loaded
// (i.e. we came here from elsewhere in the app), use it
export const router = browser;
// since there's no dynamic data here, we can prerender
// it so that it gets served as a static asset in prod
export const prerender = true;

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<script context="module">
throw new Error("@migration task: Check code was safely removed (https://github.com/sveltejs/kit/discussions/5774#discussioncomment-3292722)");
// import { browser, dev } from '$app/env';
// // we don't need any JS on this page, though we'll load
// // it in dev so that we get hot module replacement...
// export const hydrate = dev;
// // ...but if the client-side router is already loaded
// // (i.e. we came here from elsewhere in the app), use it
// export const router = browser;
// // since there's no dynamic data here, we can prerender
// // it so that it gets served as a static asset in prod
// export const prerender = true;
</script>
<svelte:head>
<title>About</title>
<meta name="description" content="About this app" />
</svelte:head>
<div class="content">
<h1>About this app</h1>
<p>
This is a <a href="https://kit.svelte.dev">SvelteKit</a> app. You can make your own by typing the
following into your command line and following the prompts:
</p>
<pre>npm create svelte@latest</pre>
<p>
The page you're looking at is purely static HTML, with no client-side interactivity needed.
Because of that, we don't need to load any JavaScript. Try viewing the page's source, or opening
the devtools network panel and reloading.
</p>
<p>
The <a href="/todos">TODOs</a> page illustrates SvelteKit's data loading and form handling. Try using
it with JavaScript disabled!
</p>
</div>
<style>
.content {
width: 100%;
max-width: var(--column-width);
margin: var(--column-margin-top) auto 0 auto;
}
</style>

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<script>
import {onMount} from "svelte";
const jsonRequest = type => async (path, object) => fetch('http://localhost:3000' + path, {
method: type,
body: JSON.stringify(object),
headers: {
'Content-Type': 'application/json'
}
})
const post = jsonRequest('POST')
const put = jsonRequest('PUT')
const addCluster = async cluster => post('/clusters', cluster)
const updateCluster = async cluster => put('/clusters', cluster)
let clusters = []
onMount(async () => {
const response = await fetch(`http://localhost:3000/clusters`)
clusters = await response.json()
if (Object.keys(clusters).length > 0) {
config = Object.entries(clusters).map(([key, value]) => ({...value, clusterName: key}))[0]
}
})
let config = {
clusterName: '',
clientId: '',
brokers: [''],
ssl: true,
sasl: {
mechanism: '',
username: '',
password: ''
}
};
</script>
<svelte:head>
<meta name="description" content="Kafka Dance Settings" />
</svelte:head>
<section>
<div class="query-settings">
<h1>Cluster Configuration</h1>
<div class="settings-option">
Cluster Name: <input bind:value={config.clusterName}>
</div>
<div class="settings-option">
Client Id: <input bind:value={config.clientId}>
</div>
<div class="settings-option">
Brokers:
{#each config.brokers as broker}
<input bind:value={broker}>
{/each}
<button on:click={() => {config.brokers = [...config.brokers, '']}}>+</button>
</div>
<div class="settings-option">
<div>
Use SSL: <input type=checkbox bind:checked={config.ssl}>
</div>
</div>
<div class="settings-option">
<div>SASL:</div>
<div>
Mechanism: <input bind:value={config.sasl.mechanism}>
</div>
<div>
Username: <input bind:value={config.sasl.username}>
</div>
<div>
Password: <input type="password" bind:value={config.sasl.password}>
</div>
</div>
<button style="float: right;" on:click={() => updateCluster(config)}>Save</button>
</div>
</section>
<style>
section {
display: flex;
flex-direction: row;
flex: 1;
justify-content: space-between;
}
h1 {
width: 100%;
}
textarea {
overflow: hidden;
z-index: 1;
margin-left: 0;
background-color: #222222;
color: #d0dde9;
border: none;
font-size: 14px;
font-family: var(--font-mono);
padding: 1em;
overflow-x: auto;
min-width: 20vw;
}
.query-settings {
margin-right: 1rem;
}
.no-query-data h2 {
font-size: 32px;
color: rgba(0, 0, 0, 0.3);
}
</style>

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import { api } from './_api';
/** @type {import('./$types').PageServerLoad} */
export const load = async ({ locals }) => {
// locals.userid comes from src/hooks.js
const response = await api('GET', `todos/${locals.userid}`);
if (response.status === 404) {
// user hasn't created a todo list.
// start with an empty array
return {
todos: []
};
}
if (response.status === 200) {
return {
todos: await response.json()
};
}
throw new Error("@migration task: Migrate this return statement (https://github.com/sveltejs/kit/discussions/5774#discussioncomment-3292699)");
return {
status: response.status
};
};
/** @type {import('./$types').Action} */
export const POST = async ({ request, locals }) => {
const form = await request.formData();
await api('POST', `todos/${locals.userid}`, {
text: form.get('text')
});
throw new Error("@migration task: Migrate this return statement (https://github.com/sveltejs/kit/discussions/5774#discussioncomment-3292699)");
return {};
};
// If the user has JavaScript disabled, the URL will change to
// include the method override unless we redirect back to /todos
const redirect = {
status: 303,
headers: {
location: '/todos'
}
};
/** @type {import('./$types').Action} */
export const PATCH = async ({ request, locals }) => {
const form = await request.formData();
await api('PATCH', `todos/${locals.userid}/${form.get('uid')}`, {
text: form.has('text') ? form.get('text') : undefined,
done: form.has('done') ? !!form.get('done') : undefined
});
throw new Error("@migration task: Migrate this return statement (https://github.com/sveltejs/kit/discussions/5774#discussioncomment-3292699)");
return redirect;
};
/** @type {import('./$types').Action} */
export const DELETE = async ({ request, locals }) => {
const form = await request.formData();
await api('DELETE', `todos/${locals.userid}/${form.get('uid')}`);
throw new Error("@migration task: Migrate this return statement (https://github.com/sveltejs/kit/discussions/5774#discussioncomment-3292699)");
return redirect;
};

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<script>
throw new Error("@migration task: Add data prop (https://github.com/sveltejs/kit/discussions/5774#discussioncomment-3292707)");
import { enhance } from '$lib/form';
import { scale } from 'svelte/transition';
import { flip } from 'svelte/animate';
/**
* @typedef {{
* uid: string;
* created_at: Date;
* text: string;
* done: boolean;
* pending_delete: boolean;
* }} Todo
*/
/** @type {Todo[]} */
export let todos;
</script>
<svelte:head>
<title>Todos</title>
<meta name="description" content="A todo list app" />
</svelte:head>
<div class="todos">
<h1>Todos</h1>
<form
class="new"
action="/todos"
method="post"
use:enhance={{
result: async ({ form }) => {
form.reset();
}
}}
>
<input name="text" aria-label="Add todo" placeholder="+ tap to add a todo" />
</form>
{#each todos as todo (todo.uid)}
<div
class="todo"
class:done={todo.done}
transition:scale|local={{ start: 0.7 }}
animate:flip={{ duration: 200 }}
>
<form
action="/todos?_method=PATCH"
method="post"
use:enhance={{
pending: ({ data }) => {
todo.done = !!data.get('done');
}
}}
>
<input type="hidden" name="uid" value={todo.uid} />
<input type="hidden" name="done" value={todo.done ? '' : 'true'} />
<button class="toggle" aria-label="Mark todo as {todo.done ? 'not done' : 'done'}" />
</form>
<form class="text" action="/todos?_method=PATCH" method="post" use:enhance>
<input type="hidden" name="uid" value={todo.uid} />
<input aria-label="Edit todo" type="text" name="text" value={todo.text} />
<button class="save" aria-label="Save todo" />
</form>
<form
action="/todos?_method=DELETE"
method="post"
use:enhance={{
pending: () => (todo.pending_delete = true)
}}
>
<input type="hidden" name="uid" value={todo.uid} />
<button class="delete" aria-label="Delete todo" disabled={todo.pending_delete} />
</form>
</div>
{/each}
</div>
<style>
.todos {
width: 100%;
max-width: var(--column-width);
margin: var(--column-margin-top) auto 0 auto;
line-height: 1;
}
.new {
margin: 0 0 0.5rem 0;
}
input {
border: 1px solid transparent;
}
input:focus-visible {
box-shadow: inset 1px 1px 6px rgba(0, 0, 0, 0.1);
border: 1px solid #ff3e00 !important;
outline: none;
}
.new input {
font-size: 28px;
width: 100%;
padding: 0.5em 1em 0.3em 1em;
box-sizing: border-box;
background: rgba(255, 255, 255, 0.05);
border-radius: 8px;
text-align: center;
}
.todo {
display: grid;
grid-template-columns: 2rem 1fr 2rem;
grid-gap: 0.5rem;
align-items: center;
margin: 0 0 0.5rem 0;
padding: 0.5rem;
background-color: white;
border-radius: 8px;
filter: drop-shadow(2px 4px 6px rgba(0, 0, 0, 0.1));
transform: translate(-1px, -1px);
transition: filter 0.2s, transform 0.2s;
}
.done {
transform: none;
opacity: 0.4;
filter: drop-shadow(0 0 1px rgba(0, 0, 0, 0.1));
}
form.text {
position: relative;
display: flex;
align-items: center;
flex: 1;
}
.todo input {
flex: 1;
padding: 0.5em 2em 0.5em 0.8em;
border-radius: 3px;
}
.todo button {
width: 2em;
height: 2em;
border: none;
background-color: transparent;
background-position: 50% 50%;
background-repeat: no-repeat;
}
button.toggle {
border: 1px solid rgba(0, 0, 0, 0.2);
border-radius: 50%;
box-sizing: border-box;
background-size: 1em auto;
}
.done .toggle {
background-image: url("data:image/svg+xml,%3Csvg width='22' height='16' viewBox='0 0 22 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20.5 1.5L7.4375 14.5L1.5 8.5909' stroke='%23676778' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
.delete {
background-image: url("data:image/svg+xml,%3Csvg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4.5 5V22H19.5V5H4.5Z' fill='%23676778' stroke='%23676778' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath d='M10 10V16.5' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M14 10V16.5' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M2 5H22' stroke='%23676778' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M8 5L9.6445 2H14.3885L16 5H8Z' fill='%23676778' stroke='%23676778' stroke-width='1.5' stroke-linejoin='round'/%3E%3C/svg%3E%0A");
opacity: 0.2;
}
.delete:hover,
.delete:focus {
transition: opacity 0.2s;
opacity: 1;
}
.save {
position: absolute;
right: 0;
opacity: 0;
background-image: url("data:image/svg+xml,%3Csvg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20.5 2H3.5C2.67158 2 2 2.67157 2 3.5V20.5C2 21.3284 2.67158 22 3.5 22H20.5C21.3284 22 22 21.3284 22 20.5V3.5C22 2.67157 21.3284 2 20.5 2Z' fill='%23676778' stroke='%23676778' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath d='M17 2V11H7.5V2H17Z' fill='white' stroke='white' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath d='M13.5 5.5V7.5' stroke='%23676778' stroke-width='1.5' stroke-linecap='round'/%3E%3Cpath d='M5.99844 2H18.4992' stroke='%23676778' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E%0A");
}
.todo input:focus + .save,
.save:focus {
transition: opacity 0.2s;
opacity: 1;
}
</style>

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/*
This module is used by the /todos endpoint to
make calls to api.svelte.dev, which stores todos
for each user. The leading underscore indicates that this is
a private module, _not_ an endpoint visiting /todos/_api
will net you a 404 response.
(The data on the todo app will expire periodically; no
guarantees are made. Don't use it to organise your life.)
*/
const base = 'https://api.svelte.dev';
/**
* @param {string} method
* @param {string} resource
* @param {Record<string, unknown>} [data]
*/
export function api(method, resource, data) {
return fetch(`${base}/${resource}`, {
method,
headers: {
'content-type': 'application/json'
},
body: data && JSON.stringify(data)
});
}

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# https://www.robotstxt.org/robotstxt.html
User-agent: *
Disallow:

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// import adapter from '@sveltejs/adapter-auto';
/** @type {import('@sveltejs/kit').Config} */
const config = {
kit: {
//adapter: adapter(),
// Override http methods in the Todo forms
methodOverride: {
allowed: ['PATCH', 'DELETE']
}
}
};
export default config;

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import { sveltekit } from '@sveltejs/kit/vite';
/** @type {import('vite').UserConfig} */
const config = {
plugins: [sveltekit()]
};
export default config;