Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content

Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Repository files navigation

code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

About

Simple remote code execution web service

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Used by

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
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code execution engine

Simple remote code execution web service. It's designed with scalability and reliability in mind, and can be extended to support any number of programming languages. Currently, only C# support is implemented.

Main scheme

Prerequisites:

  • JVM 17+
  • Docker
  • Node (some tests are written in JS :))

Run application

  • ./run-infra.sh - set up all required infrastructure (mongodb, kafka)
  • ./gradlew :dispatcher:run - run dispatcher instance
  • ./gradlew :worker:run - run worker instance
  • ./gradlew :api:run - run api instance

Run tests

npm run test - run whole system integration tests (app must be running)

Usage example

curl \
-d '{ "code":" Console.WriteLine(\"passed arguments:\"); foreach (var arg in args) { Console.WriteLine(arg); } await Task.Delay(1000); for (var i = 0; i < 5; i++) { Console.WriteLine($\"counter: {i}\"); await Task.Delay(100); }", "arguments":["foo","bar"], "target_framework_monikier":"net6.0", "nuget_packages":[{"name":"Newtonsoft.Json","version":"13.0.1"}] }' \
-H "Content-Type: application/json" \
-X POST \
http://0.0.0.0:8080/tasks

response example

{"id":"7b5ad48a-b04f-4fff-a95d-f921abdaa951","status":"Created"}

poll for the answer

curl \
-X GET \
http://0.0.0.0:8080/tasks/{task_id}

Description

User code runs in a fully isolated environment inside a container leveraging most of the Docker features: mem & cpu limitation, without any capabilities, as a non-root user, in a separate network, etc.

Engine enables near real-time running code log streaming support.

The main functionality is implemented, but there is room for improvement though:

  • cover everything with tests
  • background unused resources pruning
  • other languages support
  • metrics, monitoring and all that jazz
  • ...

NB

  • current implementation does not impose any disk space limitations; nevertheless, in a real-world production scenario it's easily achievable via --storage-opt docker run parameter. The reason why it's not added now is that it requires specific backing filesystem (more on that here).
  • current state & code quality - proof of concept

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Simple remote code execution web service

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