Merge branch 'custom_content'

This commit is contained in:
slonkazoid 2024-08-13 17:05:08 +03:00
commit e50501c588
Signed by: slonk
SSH key fingerprint: SHA256:tbZfJX4IOvZ0LGWOWu5Ijo8jfMPi78TU7x1VoEeCIjM
23 changed files with 1618 additions and 628 deletions

51
BUILDING.md Normal file
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@ -0,0 +1,51 @@
# Building bingus-blog
this guide assumes you have git and are on linux.
at the moment, compiling on windows is supported, but not _for windows_.
1. first, acquire _rust nightly_.
the recommended method is to install [rustup](https://rustup.rs/),
and use that to get _rust nightly_. choose "customize installation",
and set "default toolchain" to nightly to save time later, provided
you do not need _rust stable_ for something else
2. start your favorite terminal
3. then, download the repository: `git clone https://git.slonk.ing/slonk/bingus-blog && cd bingus-blog`
4. finally, build the application: `cargo +nightly build --release`
5. your executable is `target/release/bingus-blog`, copy it to your server and
you're done!
## Building for another architecture
you can use the `--target` flag in `cargo build` for this purpose.
examples are for Arch Linux x86_64.
here's how to compile for `aarch64-unknown-linux-gnu`
(eg. Oracle CI Free Tier ARM VPS):
```sh
# install the required packages to compile and link aarch64 binaries
sudo pacman -S aarch64-linux-gnu-gcc
cargo +nightly build --release --target=aarch64-unknown-linux-gnu
```
your executable will be `target/aarch64-unkown-linux-gnu/release/bingus-blog`.
---
a more tricky example is building for `aarch64-unknown-linux-musl`
(eg. a Redmi 5 Plus running postmarketOS):
```sh
# there is no toolchain for aarch64-unknown-linux-musl,
# so we have to repurpose the GNU toolchain. this doesn't
# work out of the box so we have to set some environment variables
sudo pacman -S aarch64-linux-gnu-gcc
export CC=aarch64-linux-gnu-gcc
export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=$CC
cargo +nightly build --release --target=aarch64-unknown-linux-musl
# the reason we had to do this is because cargo tries to use
# the same toolchain as the target's name. but we can tell it to use
# the GNU one like so.
```
your executable will be `target/aarch64-unkown-linux-musl/release/bingus-blog`.

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# Configuration
the configuration format, with defaults, is documented below:
```toml
title = "bingus-blog" # title of the blog
# description of the blog
description = "blazingly fast markdown blog software written in rust memory safe"
markdown_access = true # allow users to see the raw markdown of a post
# endpoint: /posts/<name>.md
js_enable = true # enable javascript (required for below 2 options)
date_format = "RFC3339" # format string used to format dates in the backend
# it's highly recommended to leave this as default,
# so the date can be formatted by the browser.
# format: https://docs.rs/chrono/latest/chrono/format/strftime/index.html#specifiers
default_sort = "date" # default sorting method ("date" or "name")
#default_color = "#f5c2e7" # default embed color, optional
[rss]
enable = false # serve an rss field under /feed.xml
# this may be a bit resource intensive
link = "https://..." # public url of the blog, required if rss is enabled
[dirs]
posts = "posts" # where posts are stored
media = "media" # directory served under /media/
custom_templates = "templates" # custom templates dir
custom_static = "static" # custom static dir
# see CUSTOM.md for documentation
[http]
host = "0.0.0.0" # ip to listen on
port = 3000 # port to listen on
[cache]
enable = true # save metadata and rendered posts into RAM
# highly recommended, only turn off if absolutely necessary
cleanup = true # clean cache, highly recommended
#cleanup_interval = 86400000 # clean the cache regularly instead of just at startup
# uncomment to enable
persistence = true # save the cache to on shutdown and load on startup
file = "cache" # file to save the cache to
compress = true # compress the cache file
compression_level = 3 # zstd compression level, 3 is recommended
[render]
syntect.load_defaults = false # include default syntect themes
syntect.themes_dir = "themes" # directory to include themes from
syntect.theme = "Catppuccin Mocha" # theme file name (without `.tmTheme`)
```
configuration is done in [TOML](https://toml.io/)
if an option marked "optional" is not set, it will not be initialized with
a default value
you don't have to copy the whole thing from here,
it's generated by the program if it doesn't exist
## Specifying Configuration
the configuration file is loaded from `config.toml` by default, but the path
can be overriden by setting the environment variable `BINGUS_BLOG_CONFIG`,
which will make bingus-blog try to read that file or fail and exit.

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# Custom Content
bingus-blog supports loading custom content such as templates and static files
at runtime from custom locations.
the configuration options `dirs.custom_templates` and `dirs.custom_static`
allow you to set where these files are loaded from.
customizing the error page, other than CSS, is not supported at this time.
## Custom Templates
custom templates are written in
[Handlebars (the rust variant)](https://crates.io/crates/handlebars).
the *custom templates directory* has a non-recursive structure:
```md
./
- index.html # ignored
- index.hbs # loaded as `index`
- post.hbs # loaded as `post`
- [NAME].hbs # loaded as `[NAME]`
- ...
```
templates will be loaded from first, the executable, then, the custom
templates path, overriding the defaults.
template changes are also processed after startup, any changed template will be
compiled and will replace the existing template in the registry, or add a
new one (though that does nothing).
if a template is deleted, the default template will be recompiled into
it's place.
note that the watcher only works if the *custom templates directory* existed
at startup. if you delete/create the directory, you must restart the program.
## Custom Static Files
GET requests to `/static` will first be checked against `dirs.custom_static`.
if the file is not found in the *custom static directory*, bingus-blog will try
to serve it from the directory embedded in the executable. this means you can
add whatever you want in the *custom static directory* and it will be served
under `/static`.
## Custom Media
the endpoint `/media` is served from `dirs.media`. no other logic or mechanism
is present.

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@ -38,9 +38,14 @@ comrak = { version = "0.22.0", features = [
console-subscriber = { version = "0.2.0", optional = true }
derive_more = "0.99.17"
fronma = "0.2.0"
handlebars = "6.0.0"
include_dir = "0.7.4"
mime_guess = "2.0.5"
notify-debouncer-full = { version = "0.3.1", default-features = false }
rss = "2.0.7"
scc = { version = "2.1.0", features = ["serde"] }
serde = { version = "1.0.197", features = ["derive"] }
serde_json = { version = "1.0.124", features = ["preserve_order"] }
syntect = "5.2.0"
thiserror = "1.0.58"
tokio = { version = "1.37.0", features = [
@ -51,6 +56,7 @@ tokio = { version = "1.37.0", features = [
] }
tokio-util = { version = "0.7.10", default-features = false }
toml = "0.8.12"
tower = "0.4.13"
tower-http = { version = "0.5.2", features = [
"compression-gzip",
"fs",

114
README.md
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@ -9,84 +9,37 @@ created_at: 2024-04-18T04:15:26+03:00
blazingly fast markdown blog software written in rust memory safe
for bingus-blog viewers: [see original document](https://git.slonk.ing/slonk/bingus-blog)
## Features
- posts are written in markdwon and loaded at runtime, meaning you
can write posts from anywhere and sync it with the server without headache
- RSS is supported
- the look of the blog is extremely customizable, with support for
[custom drop-ins](/CUSTOM.md) for both templates and static content
- really easy to deploy (the server is one executable file)
- blazingly fast
## TODO
- [x] RSS
- [x] finish writing this document
- [x] document config
- [ ] blog thumbnail and favicon
- [x] fix webkit dates (what.)
- [ ] sort asc/desc
- [x] alt text for post icon
- [ ] extend syntect options
- [x] general cleanup of code
- [ ] better error reporting and error pages
- [ ] better tracing
- [x] cache cleanup task
- [ ] ^ replace HashMap with HashCache once i implement [this](https://github.com/wvwwvwwv/scalable-concurrent-containers/issues/139)
- [x] (de)compress cache with zstd on startup/shutdown
- [ ] replace HashMap with HashCache once i implement [this](https://github.com/wvwwvwwv/scalable-concurrent-containers/issues/139)
- [ ] make date parsing less strict
- [x] make date formatting better
- [x] date formatting respects user timezone
- [x] clean up imports and require less features
- [ ] improve home page
- [x] tags
- [ ] multi-language support
- [x] be blazingly fast
- [x] 100+ MiB binary size
## Configuration
the default configuration with comments looks like this
see [CONFIG.md](/CONFIG.md)
```toml
title = "bingus-blog" # title of the blog
# description of the blog
description = "blazingly fast markdown blog software written in rust memory safe"
markdown_access = true # allow users to see the raw markdown of a post
# endpoint: /posts/<name>.md
js_enable = true # enable javascript (required for below 2 options)
date_format = "RFC3339" # format string used to format dates in the backend
# it's highly recommended to leave this as default,
# so the date can be formatted by the browser.
# format: https://docs.rs/chrono/latest/chrono/format/strftime/index.html#specifiers
default_sort = "date" # default sorting method ("date" or "name")
default_color = "#f5c2e7" # default embed color, optional
[rss]
enable = false # serve an rss field under /feed.xml
# this may be a bit resource intensive
link = "https://..." # public url of the blog, required if rss is enabled
[dirs]
posts = "posts" # where posts are stored
media = "media" # directory served under /media/
static = "static" # directory server under /static/ (css and js)
[http]
host = "0.0.0.0" # ip to listen on
port = 3000 # port to listen on
[cache]
enable = true # save metadata and rendered posts into RAM
# highly recommended, only turn off if absolutely necessary
cleanup = true # clean cache, highly recommended
#cleanup_interval = 86400000 # clean the cache regularly instead of just at startup
# uncomment to enable
persistence = true # save the cache to on shutdown and load on startup
file = "cache" # file to save the cache to
compress = true # compress the cache file
compression_level = 3 # zstd compression level, 3 is recommended
[render]
syntect.load_defaults = false # include default syntect themes
syntect.themes_dir = "themes" # directory to include themes from
syntect.theme = "Catppuccin Mocha" # theme file name (without `.tmTheme`)
```
you don't have to copy it from here, it's generated if it doesn't exist
## Usage
## Building
this project uses nightly-only features.
make sure you have the nightly toolchain installed.
@ -99,21 +52,7 @@ cargo +nightly build --release
the executable will be located at `target/release/bingus-blog`.
### Building for another architecture
you can use the `--target` flag in `cargo build` for this purpose
building for `aarch64-unknown-linux-musl` (for example, a Redmi 5 Plus running postmarketOS):
```sh
# install the required packages to compile and link aarch64 binaries
sudo pacman -S aarch64-linux-gnu-gcc
export CC=aarch64-linux-gnu-gcc
export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=$CC
cargo +nightly build --release --target=aarch64-unknown-linux-musl
```
your executable will be located at `target/<target>/release/bingus-blog` this time.
see [BUILDING.md](/BUILDING.md) for more information and detailed instructions.
## Writing Posts
@ -166,28 +105,29 @@ standard. examples of valid and invalid dates:
- # everything else is also invalid
```
## Routes
## Non-static Routes
- `GET /`: index page, lists posts
- `GET /posts`: returns a list of all posts with metadata in JSON format
- `GET /posts/<name>`: view a post
- `GET /posts/<name>.md`: view the raw markdown of a post
- `GET /post/*`: redirects to `/posts/*`
- `GET /feed.xml`: RSS feed
## Cache
bingus-blog caches every post retrieved and keeps it permanently in cache.
the only way a cache entry is removed is when it's requested and it does
not exist in the filesystem. cache entries don't expire, but they get
invalidated when the mtime of the markdown file changes.
there is a toggleable cleanup task that periodically sweeps the cache to
remove dead entries, but it can still get quite big.
if cache persistence is on, the cache is compressed & written on shutdown,
and read & decompressed on startup. one may opt to set the cache location
to point to a tmpfs so it saves and loads really fast, but it doesn't persist
across boots, also at the cost of even more RAM usage.
if cache persistence is on, the cache is (compressed &) written to disk on
shutdown, and read (& decompressed) on startup. one may opt to set the cache
location to point to a tmpfs to make it save and load quickly, but not persist
across reboots at the cost of more RAM usage.
the compression reduced a 3.21 MB file cache into 0.18 MB with almost instantly.
there is basically no good reason to not have compression on.
in my testing, the compression reduced a 3.21 MB cache to 0.18 MB almost
instantly. there is basically no good reason to not have compression on,
unless you have filesystem compression already of course.
## Contributing

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@ -0,0 +1,18 @@
<div class="table">
{{#if (ne this.created_at null)}}
<div class="created">written</div>
<div class="created value">{{>span_date date_time=this.created_at}}</div>
{{/if}}
{{#if (ne this.modified_at null)}}
<div class="modified">last modified</div>
<div class="modified value">{{>span_date date_time=this.modified_at}}</div>
{{/if}}
{{#if (gt (len this.tags) 0)}}
<div class="tags">tags</div>
<div class="tags value">
{{#each this.tags}}
<a href="/?tag={{this}}" title="view all posts with this tag">{{this}}</a>
{{/each}}
</div>
{{/if}}
</div>

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@ -0,0 +1 @@
<span class="date {{#if (eq df "RFC3339")}}date-rfc3339{{/if}}">{{date date_time df}}</span>

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@ -1,32 +1,40 @@
use std::collections::HashMap;
use std::sync::Arc;
use std::time::Duration;
use askama_axum::Template;
use axum::extract::{Path, Query, State};
use axum::http::header::CONTENT_TYPE;
use axum::http::{header, Request};
use axum::http::Request;
use axum::response::{IntoResponse, Redirect, Response};
use axum::routing::get;
use axum::{Json, Router};
use handlebars::Handlebars;
use include_dir::{include_dir, Dir};
use rss::{Category, ChannelBuilder, ItemBuilder};
use serde::Deserialize;
use serde::{Deserialize, Serialize};
use serde_json::Map;
use tokio::sync::RwLock;
use tower::service_fn;
use tower_http::services::ServeDir;
use tower_http::trace::TraceLayer;
use tracing::{info, info_span, Span};
use crate::config::{Config, DateFormat, Sort};
use crate::error::{AppError, AppResult};
use crate::filters;
use crate::post::{MarkdownPosts, PostManager, PostMetadata, RenderStats, ReturnedPost};
use crate::serve_dir_included::handle;
const STATIC: Dir<'static> = include_dir!("$CARGO_MANIFEST_DIR/static");
#[derive(Clone)]
#[non_exhaustive]
pub struct AppState {
pub config: Arc<Config>,
pub posts: Arc<MarkdownPosts<Arc<Config>>>,
pub reg: Arc<RwLock<Handlebars<'static>>>,
}
#[derive(Template)]
#[template(path = "index.html")]
#[derive(Serialize)]
struct IndexTemplate<'a> {
title: &'a str,
description: &'a str,
@ -36,10 +44,11 @@ struct IndexTemplate<'a> {
js: bool,
color: Option<&'a str>,
sort: Sort,
tags: Map<String, serde_json::Value>,
joined_tags: String,
}
#[derive(Template)]
#[template(path = "post.html")]
#[derive(Serialize)]
struct PostTemplate<'a> {
meta: &'a PostMetadata,
rendered: String,
@ -48,6 +57,7 @@ struct PostTemplate<'a> {
df: &'a DateFormat,
js: bool,
color: Option<&'a str>,
joined_tags: String,
}
#[derive(Deserialize)]
@ -57,15 +67,63 @@ struct QueryParams {
num_posts: Option<usize>,
}
fn collect_tags(posts: &Vec<PostMetadata>) -> Map<String, serde_json::Value> {
let mut tags = HashMap::new();
for post in posts {
for tag in &post.tags {
if let Some((existing_tag, count)) = tags.remove_entry(tag) {
tags.insert(existing_tag, count + 1);
} else {
tags.insert(tag.clone(), 1);
}
}
}
let mut tags: Vec<(String, u64)> = tags.into_iter().collect();
tags.sort_unstable_by_key(|(v, _)| v.clone());
tags.sort_by_key(|(_, v)| -(*v as i64));
let mut map = Map::new();
for tag in tags.into_iter() {
map.insert(tag.0, tag.1.into());
}
map
}
fn join_tags_for_meta(tags: &Map<String, serde_json::Value>, delim: &str) -> String {
let mut s = String::new();
let tags = tags.keys().enumerate();
let len = tags.len();
for (i, tag) in tags {
s += tag;
if i != len - 1 {
s += delim;
}
}
s
}
async fn index<'a>(
State(AppState { config, posts }): State<AppState>,
State(AppState {
config, posts, reg, ..
}): State<AppState>,
Query(query): Query<QueryParams>,
) -> AppResult<Response> {
) -> AppResult<impl IntoResponse> {
let posts = posts
.get_max_n_post_metadata_with_optional_tag_sorted(query.num_posts, query.tag.as_ref())
.await?;
Ok(IndexTemplate {
let tags = collect_tags(&posts);
let joined_tags = join_tags_for_meta(&tags, ", ");
let reg = reg.read().await;
let rendered = reg.render(
"index",
&IndexTemplate {
title: &config.title,
description: &config.description,
posts,
@ -74,8 +132,12 @@ async fn index<'a>(
js: config.js_enable,
color: config.default_color.as_deref(),
sort: config.default_sort,
}
.into_response())
tags,
joined_tags,
},
);
drop(reg);
Ok(([(CONTENT_TYPE, "text/html")], rendered?))
}
async fn all_posts(
@ -90,7 +152,7 @@ async fn all_posts(
}
async fn rss(
State(AppState { config, posts }): State<AppState>,
State(AppState { config, posts, .. }): State<AppState>,
Query(query): Query<QueryParams>,
) -> AppResult<Response> {
if !config.rss.enable {
@ -145,15 +207,23 @@ async fn rss(
let body = channel.build().to_string();
drop(channel);
Ok(([(header::CONTENT_TYPE, "text/xml")], body).into_response())
Ok(([(CONTENT_TYPE, "text/xml")], body).into_response())
}
async fn post(
State(AppState { config, posts }): State<AppState>,
State(AppState {
config, posts, reg, ..
}): State<AppState>,
Path(name): Path<String>,
) -> AppResult<Response> {
) -> AppResult<impl IntoResponse> {
match posts.get_post(&name).await? {
ReturnedPost::Rendered(ref meta, rendered, rendered_in) => Ok(PostTemplate {
ReturnedPost::Rendered(ref meta, rendered, rendered_in) => {
let joined_tags = meta.tags.join(", ");
let reg = reg.read().await;
let rendered = reg.render(
"post",
&PostTemplate {
meta,
rendered,
rendered_in,
@ -161,8 +231,12 @@ async fn post(
df: &config.date_format,
js: config.js_enable,
color: meta.color.as_deref().or(config.default_color.as_deref()),
joined_tags,
},
);
drop(reg);
Ok(([(CONTENT_TYPE, "text/html")], rendered?).into_response())
}
.into_response()),
ReturnedPost::Raw(body, content_type) => {
Ok(([(CONTENT_TYPE, content_type)], body).into_response())
}
@ -183,7 +257,9 @@ pub fn new(config: &Config) -> Router<AppState> {
.route("/feed.xml", get(rss))
.nest_service(
"/static",
ServeDir::new(&config.dirs._static).precompressed_gzip(),
ServeDir::new(&config.dirs.custom_static)
.precompressed_gzip()
.fallback(service_fn(|req| handle(req, &STATIC))),
)
.nest_service("/media", ServeDir::new(&config.dirs.media))
.layer(

View file

@ -49,8 +49,8 @@ pub struct HttpConfig {
pub struct DirsConfig {
pub posts: PathBuf,
pub media: PathBuf,
#[serde(rename = "static")]
pub _static: PathBuf,
pub custom_static: PathBuf,
pub custom_templates: PathBuf,
}
#[derive(Serialize, Deserialize, Debug, Clone)]
@ -102,7 +102,7 @@ impl Default for Config {
js_enable: true,
date_format: Default::default(),
default_sort: Default::default(),
default_color: Some("#f5c2e7".into()),
default_color: None,
// i have a love-hate relationship with serde
// it was engimatic at first, but then i started actually using it
// writing my own serialize and deserialize implementations.. spending
@ -126,7 +126,8 @@ impl Default for DirsConfig {
Self {
posts: "posts".into(),
media: "media".into(),
_static: "static".into(),
custom_static: "static".into(),
custom_templates: "templates".into(),
}
}
}

View file

@ -53,6 +53,8 @@ pub type AppResult<T> = Result<T, AppError>;
pub enum AppError {
#[error("failed to fetch post: {0}")]
PostError(#[from] PostError),
#[error(transparent)]
HandlebarsError(#[from] handlebars::RenderError),
#[error("rss is disabled")]
RssDisabled,
#[error(transparent)]
@ -75,12 +77,9 @@ struct ErrorTemplate {
impl IntoResponse for AppError {
fn into_response(self) -> Response {
let status_code = match &self {
AppError::PostError(err) => match err {
PostError::NotFound(_) => StatusCode::NOT_FOUND,
_ => StatusCode::INTERNAL_SERVER_ERROR,
},
AppError::PostError(PostError::NotFound(_)) => StatusCode::NOT_FOUND,
AppError::RssDisabled => StatusCode::FORBIDDEN,
AppError::UrlError(_) => StatusCode::INTERNAL_SERVER_ERROR,
_ => StatusCode::INTERNAL_SERVER_ERROR,
};
(
status_code,

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@ -1,56 +0,0 @@
use std::collections::HashMap;
use std::fmt::Display;
use std::time::Duration;
use chrono::{DateTime, TimeZone};
use crate::config::DateFormat;
use crate::post::PostMetadata;
fn format_date<T>(date: &DateTime<T>, date_format: &DateFormat) -> String
where
T: TimeZone,
T::Offset: Display,
{
match date_format {
DateFormat::RFC3339 => date.to_rfc3339_opts(chrono::SecondsFormat::Secs, true),
DateFormat::Strftime(ref format_string) => date.format(format_string).to_string(),
}
}
pub fn date<T>(date: &DateTime<T>, date_format: &DateFormat) -> Result<String, askama::Error>
where
T: TimeZone,
T::Offset: Display,
{
Ok(format_date(date, date_format))
}
pub fn duration(duration: &&Duration) -> Result<String, askama::Error> {
Ok(format!("{:?}", duration))
}
pub fn collect_tags(posts: &Vec<PostMetadata>) -> Result<Vec<(String, u64)>, askama::Error> {
let mut tags = HashMap::new();
for post in posts {
for tag in &post.tags {
if let Some((existing_tag, count)) = tags.remove_entry(tag) {
tags.insert(existing_tag, count + 1);
} else {
tags.insert(tag.clone(), 1);
}
}
}
let mut tags: Vec<(String, u64)> = tags.into_iter().collect();
tags.sort_unstable_by_key(|(v, _)| v.clone());
tags.sort_by_key(|(_, v)| -(*v as i64));
Ok(tags)
}
pub fn join_tags_for_meta(tags: &Vec<String>) -> Result<String, askama::Error> {
Ok(tags.join(", "))
}

24
src/helpers.rs Normal file
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@ -0,0 +1,24 @@
use std::fmt::Display;
use std::time::Duration;
use chrono::{DateTime, TimeZone, Utc};
use handlebars::handlebars_helper;
use crate::config::DateFormat;
fn date_impl<T>(date_time: &DateTime<T>, date_format: &DateFormat) -> String
where
T: TimeZone,
T::Offset: Display,
{
match date_format {
DateFormat::RFC3339 => date_time.to_rfc3339_opts(chrono::SecondsFormat::Secs, true),
DateFormat::Strftime(ref format_string) => date_time.format(format_string).to_string(),
}
}
handlebars_helper!(date: |date_time: Option<DateTime<Utc>>, date_format: DateFormat| {
date_impl(date_time.as_ref().unwrap(), &date_format)
});
handlebars_helper!(duration: |duration_: Duration| format!("{:?}", duration_));

View file

@ -1,15 +1,17 @@
#![feature(let_chains)]
#![feature(let_chains, pattern)]
mod app;
mod config;
mod error;
mod filters;
mod hash_arc_store;
mod helpers;
mod markdown_render;
mod platform;
mod post;
mod ranged_i128_visitor;
mod serve_dir_included;
mod systemtime_as_secs;
mod templates;
use std::future::IntoFuture;
use std::net::SocketAddr;
@ -19,31 +21,40 @@ use std::time::Duration;
use color_eyre::eyre::{self, Context};
use tokio::net::TcpListener;
use tokio::sync::RwLock;
use tokio::task::JoinSet;
use tokio::time::Instant;
use tokio::{select, signal};
use tokio_util::sync::CancellationToken;
use tracing::level_filters::LevelFilter;
use tracing::{debug, info, warn};
use tracing::{debug, error, info, info_span, warn, Instrument};
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::{util::SubscriberInitExt, EnvFilter};
use crate::app::AppState;
use crate::post::{MarkdownPosts, PostManager};
use crate::templates::new_registry;
use crate::templates::watcher::watch_templates;
#[tokio::main]
async fn main() -> eyre::Result<()> {
#[cfg(feature = "tokio-console")]
console_subscriber::init();
color_eyre::install()?;
#[cfg(not(feature = "tokio-console"))]
tracing_subscriber::registry()
let reg = tracing_subscriber::registry();
#[cfg(feature = "tokio-console")]
let reg = reg
.with(
EnvFilter::builder()
.with_default_directive(LevelFilter::TRACE.into())
.from_env_lossy(),
)
.with(console_subscriber::spawn());
#[cfg(not(feature = "tokio-console"))]
let reg = reg.with(
EnvFilter::builder()
.with_default_directive(LevelFilter::INFO.into())
.from_env_lossy(),
)
.with(tracing_subscriber::fmt::layer())
.init();
);
reg.with(tracing_subscriber::fmt::layer()).init();
let config = Arc::new(
config::load()
@ -56,22 +67,45 @@ async fn main() -> eyre::Result<()> {
let mut tasks = JoinSet::new();
let cancellation_token = CancellationToken::new();
let start = Instant::now();
// NOTE: use tokio::task::spawn_blocking if this ever turns into a concurrent task
let mut reg = new_registry(&config.dirs.custom_templates)
.context("failed to create handlebars registry")?;
reg.register_helper("date", Box::new(helpers::date));
reg.register_helper("duration", Box::new(helpers::duration));
debug!(duration = ?start.elapsed(), "registered all templates");
let reg = Arc::new(RwLock::new(reg));
let watcher_token = cancellation_token.child_token();
let posts = Arc::new(MarkdownPosts::new(Arc::clone(&config)).await?);
let state = AppState {
config: Arc::clone(&config),
posts: Arc::clone(&posts),
reg: Arc::clone(&reg),
};
debug!("setting up watcher");
tasks.spawn(
watch_templates(
config.dirs.custom_templates.clone(),
watcher_token.clone(),
reg,
)
.instrument(info_span!("custom_template_watcher")),
);
if config.cache.enable && config.cache.cleanup {
if let Some(t) = config.cache.cleanup_interval {
if let Some(millis) = config.cache.cleanup_interval {
let posts = Arc::clone(&posts);
let token = cancellation_token.child_token();
debug!("setting up cleanup task");
tasks.spawn(async move {
let mut interval = tokio::time::interval(Duration::from_millis(t));
let mut interval = tokio::time::interval(Duration::from_millis(millis));
loop {
select! {
_ = token.cancelled() => break,
_ = token.cancelled() => break Ok(()),
_ = interval.tick() => {
posts.cleanup().await
}
@ -122,7 +156,10 @@ async fn main() -> eyre::Result<()> {
cancellation_token.cancel();
server.await.context("failed to serve app")?;
while let Some(task) = tasks.join_next().await {
task.context("failed to join task")?;
let res = task.context("failed to join task")?;
if let Err(err) = res {
error!("task failed with error: {err}");
}
}
drop(state);

View file

@ -24,6 +24,7 @@ pub struct PostMetadata {
pub tags: Vec<String>,
}
#[derive(Serialize)]
pub enum RenderStats {
Cached(Duration),
// format: Total, Parsed in, Rendered in

81
src/serve_dir_included.rs Normal file
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@ -0,0 +1,81 @@
use std::convert::Infallible;
use std::str::pattern::Pattern;
use axum::extract::Request;
use axum::http::{header, StatusCode};
use axum::response::{IntoResponse, Response};
use include_dir::{Dir, DirEntry};
use tracing::{debug, trace};
fn if_empty<'a>(a: &'a str, b: &'a str) -> &'a str {
if a.is_empty() {
b
} else {
a
}
}
fn remove_prefixes(mut src: &str, pat: (impl Pattern + Copy)) -> &str {
while let Some(removed) = src.strip_prefix(pat) {
src = removed;
}
src
}
fn from_included_file(file: &'static include_dir::File<'static>) -> Response {
let mime_type = mime_guess::from_path(file.path()).first_or_octet_stream();
(
[(
header::CONTENT_TYPE,
header::HeaderValue::try_from(mime_type.essence_str()).expect("invalid mime type"),
)],
file.contents(),
)
.into_response()
}
pub async fn handle(
req: Request,
included_dir: &'static Dir<'static>,
) -> Result<Response, Infallible> {
#[cfg(windows)]
compile_error!("this is not safe");
let path = req.uri().path();
let has_dotdot = path.split('/').any(|seg| seg == "..");
if has_dotdot {
return Ok(StatusCode::NOT_FOUND.into_response());
}
let relative_path = if_empty(remove_prefixes(path, '/'), ".");
match included_dir.get_entry(relative_path) {
Some(DirEntry::Dir(dir)) => {
trace!("{relative_path:?} is a directory, trying \"index.html\"");
if let Some(file) = dir.get_file("index.html") {
debug!("{path:?} (index.html) serving from included dir");
return Ok(from_included_file(file));
} else {
trace!("\"index.html\" not found in {relative_path:?} in included files");
}
}
None if relative_path == "." => {
trace!("requested root, trying \"index.html\"");
if let Some(file) = included_dir.get_file("index.html") {
debug!("{path:?} (index.html) serving from included dir");
return Ok(from_included_file(file));
} else {
trace!("\"index.html\" not found in included files");
}
}
Some(DirEntry::File(file)) => {
debug!("{path:?} serving from included dir");
return Ok(from_included_file(file));
}
None => trace!("{relative_path:?} not found in included files"),
};
Ok(StatusCode::NOT_FOUND.into_response())
}

186
src/templates/mod.rs Normal file
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@ -0,0 +1,186 @@
pub mod watcher;
use std::{io, path::Path};
use handlebars::{Handlebars, Template};
use include_dir::{include_dir, Dir};
use thiserror::Error;
use tracing::{debug, error, info_span, trace};
const TEMPLATES: Dir<'static> = include_dir!("$CARGO_MANIFEST_DIR/templates");
const PARTIALS: Dir<'static> = include_dir!("$CARGO_MANIFEST_DIR/partials");
#[derive(Error, Debug)]
#[allow(clippy::enum_variant_names)]
pub enum TemplateError {
#[error(transparent)]
IoError(#[from] std::io::Error),
#[error("file doesn't contain valid UTF-8")]
UTF8Error,
#[error(transparent)]
TemplateError(#[from] handlebars::TemplateError),
}
fn is_ext(path: impl AsRef<Path>, ext: &str) -> bool {
match path.as_ref().extension() {
Some(path_ext) if path_ext != ext => false,
None => false,
_ => true,
}
}
pub(self) fn get_template_name<'a>(path: &'a Path) -> Option<&'a str> {
if !is_ext(path, "hbs") {
return None;
}
path.file_stem()?.to_str()
}
fn register_included_file(
file: &include_dir::File<'_>,
name: &str,
registry: &mut Handlebars,
) -> Result<(), TemplateError> {
let template = compile_included_file(file)?;
registry.register_template(name, template);
Ok(())
}
fn register_path<'a>(
path: impl AsRef<std::path::Path>,
name: &str,
registry: &mut Handlebars<'a>,
) -> Result<(), TemplateError> {
let template = compile_path(path)?;
registry.register_template(name, template);
Ok(())
}
fn register_partial(
file: &include_dir::File<'_>,
name: &str,
registry: &mut Handlebars,
) -> Result<(), TemplateError> {
registry.register_partial(name, file.contents_utf8().ok_or(TemplateError::UTF8Error)?)?;
Ok(())
}
fn compile_included_file(file: &include_dir::File<'_>) -> Result<Template, TemplateError> {
let contents = file.contents_utf8().ok_or(TemplateError::UTF8Error)?;
let template = Template::compile(contents)?;
Ok(template)
}
fn compile_path(path: impl AsRef<std::path::Path>) -> Result<Template, TemplateError> {
use std::fs::OpenOptions;
use std::io::Read;
let mut file = OpenOptions::new().read(true).open(path)?;
let mut buf = String::new();
file.read_to_string(&mut buf)?;
let template = Template::compile(&buf)?;
Ok(template)
}
pub(self) async fn compile_path_async_io(
path: impl AsRef<std::path::Path>,
) -> Result<Template, TemplateError> {
use tokio::fs::OpenOptions;
use tokio::io::AsyncReadExt;
let mut file = OpenOptions::new().read(true).open(path).await?;
let mut buf = String::new();
file.read_to_string(&mut buf).await?;
let template = Template::compile(&buf)?;
Ok(template)
}
pub fn new_registry<'a>(custom_templates_path: impl AsRef<Path>) -> io::Result<Handlebars<'a>> {
let mut reg = Handlebars::new();
for entry in TEMPLATES.entries() {
let file = match entry.as_file() {
Some(file) => file,
None => continue,
};
let span = info_span!("register_included_template", path = ?file.path());
let _handle = span.enter();
let name = match get_template_name(file.path()) {
Some(v) => v,
None => {
trace!("skipping file");
continue;
}
};
match register_included_file(file, name, &mut reg) {
Ok(()) => debug!("registered template {name:?}"),
Err(err) => error!("error while registering template: {err}"),
};
}
for entry in PARTIALS.entries() {
let file = match entry.as_file() {
Some(file) => file,
None => continue,
};
let span = info_span!("register_partial", path = ?file.path());
let _handle = span.enter();
let name = match get_template_name(file.path()) {
Some(v) => v,
None => {
trace!("skipping file");
continue;
}
};
match register_partial(file, name, &mut reg) {
Ok(()) => debug!("registered partial {name:?}"),
Err(err) => error!("error while registering partial: {err}"),
};
}
let read_dir = match std::fs::read_dir(custom_templates_path) {
Ok(v) => v,
Err(err) => match err.kind() {
io::ErrorKind::NotFound => return Ok(reg),
_ => panic!("{:?}", err),
},
};
for entry in read_dir {
let entry = entry.unwrap();
let file_type = entry.file_type()?;
if !file_type.is_file() {
continue;
}
let path = entry.path();
let span = info_span!("register_custom_template", ?path);
let _handle = span.enter();
let name = match get_template_name(&path) {
Some(v) => v,
None => {
trace!("skipping file");
continue;
}
};
match register_path(&path, name, &mut reg) {
Ok(()) => debug!("registered template {name:?}"),
Err(err) => error!("error while registering template: {err}"),
};
}
Ok(reg)
}

126
src/templates/watcher.rs Normal file
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@ -0,0 +1,126 @@
use std::path::Path;
use std::sync::Arc;
use std::time::Duration;
use handlebars::{Handlebars, Template};
use notify_debouncer_full::notify::{self, Watcher};
use notify_debouncer_full::{new_debouncer, DebouncedEvent};
use tokio::select;
use tokio::sync::RwLock;
use tokio_util::sync::CancellationToken;
use tracing::{debug, error, info, trace, trace_span};
use crate::templates::*;
async fn process_event(
event: DebouncedEvent,
templates: &mut Vec<(String, Template)>,
) -> Result<(), Box<dyn std::error::Error>> {
match event.kind {
notify::EventKind::Create(notify::event::CreateKind::File)
| notify::EventKind::Modify(_) => {
for path in &event.paths {
let span = trace_span!("modify_event", ?path);
let _handle = span.enter();
let template_name = match get_template_name(path) {
Some(v) => v,
None => {
trace!("skipping event");
continue;
}
};
trace!("processing recompilation");
let compiled = compile_path_async_io(path).await?;
trace!("compiled template {template_name:?}");
templates.push((template_name.to_owned(), compiled));
}
}
notify::EventKind::Remove(notify::event::RemoveKind::File) => {
for path in &event.paths {
let span = trace_span!("remove_event", ?path);
let _handle = span.enter();
let (file_name, template_name) = match path
.file_name()
.and_then(|o| o.to_str())
.and_then(|file_name| {
get_template_name(Path::new(file_name))
.map(|template_name| (file_name, template_name))
}) {
Some(v) => v,
None => {
trace!("skipping event");
continue;
}
};
trace!("processing removal");
let file = TEMPLATES.get_file(file_name);
if let Some(file) = file {
let compiled = compile_included_file(file)?;
trace!("compiled template {template_name:?}");
templates.push((template_name.to_owned(), compiled));
}
}
}
_ => {}
};
Ok(())
}
pub async fn watch_templates<'a>(
path: impl AsRef<Path>,
watcher_token: CancellationToken,
reg: Arc<RwLock<Handlebars<'a>>>,
) -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>> {
let path = path.as_ref();
let (tx, mut rx) = tokio::sync::mpsc::channel(1);
let mut debouncer = new_debouncer(Duration::from_millis(100), None, move |events| {
tx.blocking_send(events)
.expect("failed to send message over channel")
})?;
debouncer
.watcher()
.watch(path, notify::RecursiveMode::NonRecursive)?;
'event_loop: while let Some(events) = select! {
_ = watcher_token.cancelled() => {
debug!("exiting watcher loop");
break 'event_loop;
},
events = rx.recv() => events
} {
let events = match events {
Ok(events) => events,
Err(err) => {
error!("error getting events: {err:?}");
continue;
}
};
let mut templates = Vec::new();
for event in events {
trace!("file event: {event:?}");
if let Err(err) = process_event(event, &mut templates).await {
error!("error while processing event: {err}");
}
}
let mut reg = reg.write().await;
for template in templates.into_iter() {
debug!("registered template {}", template.0);
reg.register_template(&template.0, template.1);
}
drop(reg);
info!("updated custom templates");
}
Ok(())
}

63
templates/index.hbs Normal file
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@ -0,0 +1,63 @@
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="{{title}}" />
<meta property="og:title" content="{{title}}" />
<meta property="og:description" content="{{description}}" />
<meta name="keywords" content="{{joined_tags}}" />
{{#if (ne color null)}}
<meta name="theme-color" content="{{color}}" />
{{/if}}
<title>{{title}}</title>
<link rel="stylesheet" href="/static/style.css" />
{{#if rss}}
<link rel="alternate" type="application/rss+xml" title="{{title}}" href="/feed.xml" />
{{/if}}
{{#if js}}
<script src="/static/date.js" defer></script>
<script src="/static/sort.js" defer></script>
<script src="/static/main.js" defer></script>
{{/if}}
</head>
<body>
<main>
<h1>{{title}}</h1>
<p>{{description}}</p>
<h2>posts</h2>
<div>
{{#if js}}
<form id="sort" style="display: none">
sort by: {{sort}}
<br />
<input type="radio" name="sort" id="sort-date" value="date" {{#if (eq sort "date")}}checked{{/if}} />
<label for="sort-date">date</label>
<input type="radio" name="sort" id="sort-name" value="name" {{#if (eq sort "name")}}checked{{/if}} />
<label for="sort-name">name</label>
</form>
{{/if}}
{{#each posts}}
<div id="posts">
<div class="post">
<a href="/posts/{{name}}"><b>{{title}}</b></a>
<span class="post-author">- by {{author}}</span>
<br />
{{description}}<br />
{{>post_table post df=@root.df}}
</div>
</div>
{{else}} there are no posts right now. check back later! {{/each}}
</div>
{{#if (gt (len tags) 0)}}
<h2>tags</h2>
<b><a href="/">clear tags</a></b>
<br />
{{/if}}
{{#each tags}}
<a href="/?tag={{@key}}" title="view all posts with this tag">{{@key}}</a>
<span class="post-author">- {{this}} post{{#if (ne this 1)}}s{{/if}}</span><br />
{{/each}}
</main>
</body>
</html>

View file

@ -1,68 +0,0 @@
{%- import "macros.askama" as macros -%}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="{{ title }}" />
<meta property="og:title" content="{{ title }}" />
<meta property="og:description" content="{{ description }}" />
{% match color %} {% when Some with (color) %}
<meta name="theme-color" content="{{ color }}" />
{% when None %} {% endmatch %}
<title>{{ title }}</title>
<link rel="stylesheet" href="/static/style.css" />
{% if rss %}
<link rel="alternate" type="application/rss+xml" title="{{ title }}" href="/feed.xml" />
{% endif %}
<!-- prettier-br -->
{% if js %}
<script src="/static/date.js" defer></script>
<script src="/static/sort.js" defer></script>
<script src="/static/main.js" defer></script>
{% endif %}
</head>
<body>
<main>
<h1>{{ title }}</h1>
<p>{{ description }}</p>
<h2>posts</h2>
<div>
{% if posts.is_empty() %}<!-- prettier-br -->
there are no posts right now. check back later!<!-- prettier-br -->
{% else %}<!-- prettier-br -->
{% if js %}<!-- prettier-br -->
<form id="sort" style="display: none">
sort by: <br />
<input type="radio" name="sort" id="sort-date" value="date" {% if sort == Sort::Date %} checked {% endif %} />
<label for="sort-date">date</label>
<input type="radio" name="sort" id="sort-name" value="name" {% if sort == Sort::Name %} checked {% endif %} />
<label for="sort-name">name</label>
</form>
{% endif %}<!-- prettier-br -->
<div id="posts">
{% for post in posts %}
<div class="post">
<a href="/posts/{{ post.name }}"><b>{{ post.title }}</b></a>
<span class="post-author">- by {{ post.author }}</span>
<br />
{{ post.description }}<br />
{% call macros::table(post) %}
</div>
{% endfor %}
</div>
{% endif %}<!-- prettier-br -->
</div>
{% let tags = posts|collect_tags %}<!-- prettier-br -->
{% if !tags.is_empty() %}
<h2>tags</h2>
<b><a href="/">clear tags</a></b>
<br />
{% endif %}<!-- prettier-br -->
{% for tag in tags %}
<a href="/?tag={{ tag.0 }}" title="view all posts with this tag">{{ tag.0 }}</a>
<span class="post-author">- {{ tag.1 }} post{% if tag.1 != 1 %}s{%endif %}</span><br />
{% endfor %}
</main>
</body>
</html>

View file

@ -1,31 +0,0 @@
{% macro span_date(value) %}
<span class="{%- match df -%}
{% when DateFormat::RFC3339 %}
date-rfc3339
{% when DateFormat::Strftime(_) %}
{%- endmatch -%}">{{ value|date(df) }}</span>
{% endmacro %}
{% macro table(post) %}
<div class="table">
{% match post.created_at %}
{% when Some(created_at) %}
<div class="created">written</div>
<div class="created value">{% call span_date(created_at) %}</div>
{% when None %}
{% endmatch %}
{% match post.modified_at %}
{% when Some(modified_at) %}
<div class="modified">last modified</div>
<div class="modified value">{% call span_date(modified_at) %}</div>
{% when None %}
{% endmatch %}
{% if !post.tags.is_empty() %}
<div class="tags">tags</div>
<div class="tags value">
{% for tag in post.tags %}
<a href="/?tag={{ tag }}" title="view all posts with this tag">{{ tag }}</a>
{% endfor %}
</div>
{% endif %}
</div>
{% endmacro %}

71
templates/post.hbs Normal file
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@ -0,0 +1,71 @@
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="author" content="{{meta.author}}" />
<meta name="keywords" content="{{joined_tags}}" />
<meta name="description" content="{{meta.title}}" />
<!-- you know what I really love? platforms like discord
favoring twitter embeds over the open standard. to color
your embed or have large images, you have to do _this_. lmao -->
<meta property="og:title" content="{{meta.title}}" />
<meta property="twitter:title" content="{{meta.title}}" />
<meta property="og:description" content="{{meta.description}}" />
<meta property="twitter:description" content="{{meta.description}}" />
{{#if (ne meta.icon null)}}
<meta property="og:image" content="{{meta.icon}}" />
<meta name="twitter:card" content="summary_large_image" />
<meta property="twitter:image:src" content="{{meta.icon}}" />
{{#if (ne meta.icon_alt null)}}
<meta property="og:image:alt" content="{{meta.icon_alt}}" />
<meta property="twitter:image:alt" content="{{meta.icon_alt}}" />
{{/if}}{{/if}}
{{#if (ne color null)}}
<meta name="theme-color" content="{{meta.color}}" />
{{/if}}
<title>{{meta.title}}</title>
<link rel="stylesheet" href="/static/style.css" />
<link rel="stylesheet" href="/static/post.css" />
<link rel="stylesheet" href="/static/custom/style.css" />
<link rel="stylesheet" href="/static/custom/post.css" />
{{#if js}}
<script src="/static/date.js" defer></script>
<script src="/static/main.js" defer></script>
{{/if}}
</head>
<body>
<main>
<h1 class="post-title">
{{meta.title}}
<span class="post-author">- by {{meta.author}}</span>
</h1>
<p class="post-desc">{{meta.description}}</p>
<div class="post">
{{>post_table meta df=@root.df}}
<a href="/posts/{{meta.name}}">link</a><br />
<a href="/">back to home</a>
</div>
<hr />
{{{rendered}}}
</main>
<footer>
{{#each rendered_in}}
{{#if (eq @key "ParsedAndRendered")}}
<span class="tooltipped" title="parsing took {{duration this.[1]}}">parsed</span>
and
<span class="tooltipped" title="rendering took {{duration this.[2]}}">rendered</span>
in
{{duration this.[0]}}
{{else if (eq @key "Cached")}}
retrieved from cache in
{{duration this}}
{{/if}}
{{/each}}
{{#if markdown_access}}
-
<a href="/posts/{{meta.name}}.md">view raw</a>
{{/if}}
</footer>
</body>
</html>

View file

@ -1,69 +0,0 @@
{%- import "macros.askama" as macros -%}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="author" content="{{ meta.author }}" />
<meta name="keywords" content="{{ meta.tags|join_tags_for_meta }}" />
<meta name="description" content="{{ meta.title }}" />
<!-- you know what I really love? platforms like discord
favoring twitter embeds over the open standard. to color
your embed or have large images, you have to do _this_. lmao -->
<meta property="og:title" content="{{ meta.title }}" />
<meta property="twitter:title" content="{{ meta.title }}" />
<meta property="og:description" content="{{ meta.description }}" />
<meta property="twitter:description" content="{{ meta.description }}" />
{% match meta.icon %} {% when Some with (url) %}
<meta property="og:image" content="{{ url }}" />
<meta name="twitter:card" content="summary_large_image" />
<meta property="twitter:image:src" content="{{ url }}" />
{% match meta.icon_alt %} {% when Some with (alt) %}
<meta property="og:image:alt" content="{{ alt }}" />
<meta property="twitter:image:alt" content="{{ alt }}" />
{% when None %} {% endmatch %}
<!-- prettier-br -->
{% when None %} {% endmatch %}
<!-- prettier is annoying -->
{% match color %} {% when Some with (color) %}
<meta name="theme-color" content="{{ color }}" />
{% when None %} {% endmatch %}
<title>{{ meta.title }}</title>
<link rel="stylesheet" href="/static/style.css" />
<link rel="stylesheet" href="/static/post.css" />
{% if js %}
<script src="/static/date.js" defer></script>
<script src="/static/main.js" defer></script>
{% endif %}
</head>
<body>
<main>
<h1 class="post-title">
{{ meta.title }}
<span class="post-author">- by {{ meta.author }}</span>
</h1>
<p class="post-desc">{{ meta.description }}</p>
<div class="post">
<!-- prettier-ignore -->
{% call macros::table(meta) %}
<a href="/posts/{{ meta.name }}">link</a><br />
<a href="/">back to home</a>
</div>
<hr />
{{ rendered|escape("none") }}
</main>
<!-- prettier-ignore -->
<footer>
{% match rendered_in %}
{% when RenderStats::ParsedAndRendered(total, parsing, rendering) %}
<span class="tooltipped" title="parsing took {{ parsing|duration }}">parsed</span> and
<span class="tooltipped" title="rendering took {{ rendering|duration }}">rendered</span> in {{ total|duration }}
{% when RenderStats::Cached(total) %}
retrieved from cache in {{ total|duration }}
{% endmatch %}
{% if markdown_access %}
- <a href="/posts/{{ meta.name }}.md">view raw</a>
{% endif %}
</footer>
</body>
</html>