feat: serve static upload app from axum

Introduce the first PLAN.md milestone: replace the hello-world binary with
an Axum server that binds to localhost by default, exposes a health endpoint,
and serves the static browser UI from the repository's static directory. The
router is available through the library crate so integration tests can exercise
server behavior without opening a network listener.

Add a justfile for routine validation and document the initial project shape,
configuration knobs, and reusable test checklist. The rustfmt config now uses
only stable options so the new formatting recipe runs without nightly warnings.

The upload API and resumable chunk behavior are intentionally left for later
milestones; the UI currently handles file selection only.

Test Plan:
- just check

Refs: PLAN.md milestone 1
This commit is contained in:
2026-05-30 16:54:42 +02:00
parent 4527e23b8b
commit a3f369f437
13 changed files with 1578 additions and 5 deletions
Generated
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"serde",
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"tempfile",
"time",
"tokio",
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"tower-http",
"uuid",
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+12
View File
@@ -4,6 +4,13 @@ version = "0.1.0"
edition = "2024" edition = "2024"
[dependencies] [dependencies]
axum = "0.8.9"
serde = { version = "1.0.228", features = ["derive"] }
serde_json = "1.0.150"
time = { version = "0.3.47", features = ["serde", "formatting"] }
tokio = { version = "1.52.3", features = ["full"] }
tower-http = { version = "0.6.11", features = ["fs"] }
uuid = { version = "1.23.2", features = ["v4", "serde"] }
[lints.clippy] [lints.clippy]
pedantic = { level = "warn", priority = -1 } pedantic = { level = "warn", priority = -1 }
@@ -19,3 +26,8 @@ strip = true
lto = true lto = true
panic = "unwind" panic = "unwind"
codegen-units = 1 codegen-units = 1
[dev-dependencies]
http-body-util = "0.1.3"
tempfile = "3.27.0"
tower = { version = "0.5.3", features = ["util"] }
+43
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@@ -0,0 +1,43 @@
# upl
`upl` is a small personal resumable upload service. The intended deployment is:
```text
browser -> nginx -> upl Rust server -> local filesystem
```
The first implementation milestone provides the Rust server shell and static
browser UI. Upload metadata, chunk persistence, resume state, and completion
assembly are tracked in `PLAN.md` and will be added in later coherent slices.
## Project Structure
```text
upl
Rust server
src/main.rs binary entrypoint and listener setup
src/app.rs Axum router, health endpoint, static file service
src/lib.rs library surface used by integration tests
Browser UI
static/index.html upload tool markup
static/styles.css responsive tool styling
static/app.js file-selection behavior
Validation
tests/ integration tests for server behavior
TESTS.md reusable manual and automated test checklist
```
## Configuration
- `UPL_BIND` sets the listen address. It defaults to `127.0.0.1:3000`.
- `UPL_STATIC_DIR` sets the static asset directory. It defaults to `static/`
inside this repository.
## Common Commands
Use the `justfile` for routine tasks:
```sh
just check
just run
```
+31
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@@ -0,0 +1,31 @@
# Test Scenarios
Keep this file as the reusable verification checklist while implementing
`PLAN.md`.
## Automated
- `just check`
- Runs formatting, all Rust tests, and clippy.
- Current coverage:
- `GET /` serves the static browser page.
- `GET /healthz` reports `ok`.
## Manual
These scenarios come from `PLAN.md` and should be retested as the matching
features land.
- Upload a small file in one pass.
- Upload a file larger than one chunk.
- Kill the browser tab mid-upload and resume.
- Restart the Rust server mid-upload and resume.
- Interrupt the network and resume.
- Retry a duplicate chunk and confirm it is accepted idempotently.
- Attempt an invalid chunk index and confirm it is rejected.
- Attempt a wrong-size non-final chunk and confirm it is rejected.
- Complete an upload and compare the final file with the source file:
```sh
sha256sum source-file data/complete/uploaded-file
```
+16
View File
@@ -0,0 +1,16 @@
fmt:
cargo fmt --all
test:
cargo test --all-targets
clippy:
cargo clippy --all-targets
check:
just fmt
just test
just clippy
run:
cargo run
+1 -3
View File
@@ -1,3 +1 @@
group_imports = "StdExternalCrate" edition = "2024"
imports_granularity = "Crate"
imports_layout = "HorizontalVertical"
+64
View File
@@ -0,0 +1,64 @@
use std::{
env,
error::Error,
net::SocketAddr,
path::{Path, PathBuf},
};
use axum::{Router, routing::get};
use tower_http::services::{ServeDir, ServeFile};
const DEFAULT_BIND_ADDR: &str = "127.0.0.1:3000";
const STATIC_DIR_ENV: &str = "UPL_STATIC_DIR";
const BIND_ENV: &str = "UPL_BIND";
#[derive(Clone, Debug)]
pub struct AppConfig {
pub bind_addr: SocketAddr,
pub static_dir: PathBuf,
}
impl AppConfig {
/// Loads bind and static directory settings from environment variables.
///
/// # Errors
///
/// Returns an error when `UPL_BIND` is set but is not a valid socket address.
pub fn from_env() -> Result<Self, Box<dyn Error>> {
let bind_addr = env::var(BIND_ENV)
.unwrap_or_else(|_| DEFAULT_BIND_ADDR.to_owned())
.parse()?;
let static_dir = env::var_os(STATIC_DIR_ENV).map_or_else(default_static_dir, PathBuf::from);
Ok(Self {
bind_addr,
static_dir,
})
}
#[must_use]
pub fn new(bind_addr: SocketAddr, static_dir: impl Into<PathBuf>) -> Self {
Self {
bind_addr,
static_dir: static_dir.into(),
}
}
}
pub fn build_router(config: &AppConfig) -> Router {
Router::new()
.route("/healthz", get(healthz))
.fallback_service(static_service(&config.static_dir))
}
async fn healthz() -> &'static str {
"ok"
}
fn static_service(static_dir: &Path) -> ServeDir<ServeFile> {
ServeDir::new(static_dir).fallback(ServeFile::new(static_dir.join("index.html")))
}
fn default_static_dir() -> PathBuf {
PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("static")
}
+1
View File
@@ -0,0 +1 @@
pub mod app;
+14 -2
View File
@@ -1,3 +1,15 @@
fn main() { use std::error::Error;
println!("Hello, world!");
use upl::app::{AppConfig, build_router};
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let config = AppConfig::from_env()?;
let listener = tokio::net::TcpListener::bind(config.bind_addr).await?;
println!("upl listening on http://{}", listener.local_addr()?);
axum::serve(listener, build_router(&config)).await?;
Ok(())
} }
+49
View File
@@ -0,0 +1,49 @@
const fileInput = document.querySelector("#file-input");
const fileSummary = document.querySelector("#file-summary");
const fileName = document.querySelector("#file-name");
const fileSize = document.querySelector("#file-size");
const startButton = document.querySelector("#start-button");
const eventLog = document.querySelector("#event-log");
function formatBytes(bytes) {
const formatter = new Intl.NumberFormat(undefined, {
maximumFractionDigits: 1,
});
const units = ["B", "KiB", "MiB", "GiB", "TiB"];
let value = bytes;
let unit = units[0];
for (const candidate of units) {
unit = candidate;
if (value < 1024 || candidate === units.at(-1)) {
break;
}
value /= 1024;
}
return `${formatter.format(value)} ${unit}`;
}
function log(message) {
eventLog.replaceChildren();
const item = document.createElement("li");
item.textContent = message;
eventLog.append(item);
}
fileInput.addEventListener("change", () => {
const [file] = fileInput.files;
if (!file) {
fileSummary.hidden = true;
startButton.disabled = true;
log("Choose a file to begin.");
return;
}
fileName.textContent = file.name;
fileSize.textContent = formatBytes(file.size);
fileSummary.hidden = false;
startButton.disabled = false;
log("Ready to create an upload record.");
});
+47
View File
@@ -0,0 +1,47 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>upl</title>
<link rel="stylesheet" href="/styles.css">
<script src="/app.js" defer></script>
</head>
<body>
<main class="app-shell">
<section class="upload-panel" aria-labelledby="app-title">
<div class="panel-heading">
<div>
<h1 id="app-title">upl</h1>
<p class="subtle">Resumable uploads to this machine.</p>
</div>
<span class="status-pill" id="connection-status">Server online</span>
</div>
<label class="file-picker">
<span>Select file</span>
<input id="file-input" type="file">
</label>
<div class="file-summary" id="file-summary" hidden>
<strong id="file-name"></strong>
<span id="file-size"></span>
</div>
<div class="progress-wrap" aria-label="Upload progress">
<div class="progress-bar" id="progress-bar"></div>
</div>
<div class="actions">
<button id="start-button" type="button" disabled>Start</button>
<button id="pause-button" type="button" disabled>Pause</button>
<button id="resume-button" type="button" disabled>Resume</button>
</div>
<ol class="event-log" id="event-log" aria-live="polite">
<li>Choose a file to begin.</li>
</ol>
</section>
</main>
</body>
</html>
+177
View File
@@ -0,0 +1,177 @@
:root {
color-scheme: light dark;
--bg: #f6f7f9;
--panel: #ffffff;
--text: #1d2430;
--muted: #667085;
--line: #d0d5dd;
--accent: #147a73;
--accent-strong: #0f5f59;
--track: #e4e7ec;
}
* {
box-sizing: border-box;
}
body {
margin: 0;
min-height: 100vh;
background: var(--bg);
color: var(--text);
font-family:
Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
sans-serif;
}
button,
input {
font: inherit;
}
.app-shell {
width: min(720px, 100%);
margin: 0 auto;
padding: 32px 16px;
}
.upload-panel {
display: grid;
gap: 20px;
padding: 24px;
border: 1px solid var(--line);
border-radius: 8px;
background: var(--panel);
box-shadow: 0 10px 30px rgb(16 24 40 / 8%);
}
.panel-heading {
display: flex;
align-items: flex-start;
justify-content: space-between;
gap: 16px;
}
h1,
p {
margin: 0;
}
h1 {
font-size: 2rem;
line-height: 1.1;
}
.subtle {
margin-top: 6px;
color: var(--muted);
}
.status-pill {
flex: 0 0 auto;
padding: 6px 10px;
border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
border-radius: 999px;
color: var(--accent-strong);
background: color-mix(in srgb, var(--accent) 10%, transparent);
font-size: 0.875rem;
font-weight: 700;
}
.file-picker {
display: grid;
gap: 10px;
padding: 18px;
border: 1px dashed var(--line);
border-radius: 8px;
cursor: pointer;
}
.file-picker span {
font-weight: 700;
}
.file-summary {
display: grid;
gap: 4px;
padding: 14px;
border: 1px solid var(--line);
border-radius: 8px;
}
.file-summary span {
color: var(--muted);
}
.progress-wrap {
height: 14px;
overflow: hidden;
border-radius: 999px;
background: var(--track);
}
.progress-bar {
width: 0%;
height: 100%;
background: var(--accent);
transition: width 180ms ease;
}
.actions {
display: flex;
flex-wrap: wrap;
gap: 10px;
}
button {
min-width: 96px;
min-height: 40px;
border: 1px solid transparent;
border-radius: 6px;
color: #ffffff;
background: var(--accent);
font-weight: 700;
cursor: pointer;
}
button:disabled {
color: var(--muted);
background: var(--track);
cursor: not-allowed;
}
.event-log {
min-height: 80px;
margin: 0;
padding: 14px 14px 14px 32px;
border: 1px solid var(--line);
border-radius: 8px;
color: var(--muted);
}
@media (prefers-color-scheme: dark) {
:root {
--bg: #14161a;
--panel: #1f242b;
--text: #f2f4f7;
--muted: #b8c0cc;
--line: #3d4654;
--accent: #35b8aa;
--accent-strong: #9ce4dc;
--track: #343b46;
}
}
@media (max-width: 520px) {
.panel-heading {
display: grid;
}
.status-pill {
width: max-content;
}
.upload-panel {
padding: 18px;
}
}
+48
View File
@@ -0,0 +1,48 @@
use std::net::{Ipv4Addr, SocketAddr};
use axum::{body::Body, http::Request};
use http_body_util::BodyExt;
use tower::ServiceExt;
use upl::app::{AppConfig, build_router};
#[tokio::test]
async fn serves_index_page() -> Result<(), Box<dyn std::error::Error>> {
let app = test_app();
let response = app
.oneshot(Request::builder().uri("/").body(Body::empty())?)
.await?;
assert_eq!(response.status(), axum::http::StatusCode::OK);
let body = response.into_body().collect().await?.to_bytes();
let body = String::from_utf8(body.to_vec())?;
assert!(body.contains("<title>upl</title>"));
assert!(body.contains("Select file"));
Ok(())
}
#[tokio::test]
async fn reports_health() -> Result<(), Box<dyn std::error::Error>> {
let app = test_app();
let response = app
.oneshot(Request::builder().uri("/healthz").body(Body::empty())?)
.await?;
assert_eq!(response.status(), axum::http::StatusCode::OK);
let body = response.into_body().collect().await?.to_bytes();
assert_eq!(body.as_ref(), b"ok");
Ok(())
}
fn test_app() -> axum::Router {
build_router(&AppConfig::new(
SocketAddr::from((Ipv4Addr::LOCALHOST, 0)),
concat!(env!("CARGO_MANIFEST_DIR"), "/static"),
))
}