Changes to config format, move all global context into dedicated Context struct

example_config.toml

@@ -1,19 +1,21 @@
 bind                  = "127.0.0.1:8080"
 concurrency_limit     = 128
+fs_event_delay_millis = 2000
+namespace_uuid        = "00000000-0000-0000-0000-000000000000"
 
+[site]
+protocol = "http"
+domain   = "localhost:8080"
+
+[content]
 static_dir     = "./content/static/"
 favicon_dir    = "./content/favicon/"
 robots_path    = "./content/robots.txt"
 posts_dir      = "./articles/src/"
 post_media_dir = "./articles/media/"
 
-fs_event_delay_millis = 2000
-
-namespace_uuid = "00000000-0000-0000-0000-000000000000"
-
-[self_ref]
-protocol = "http"
-domain   = "localhost:8080"
+[github]
+source_url = "https://github.com/pantonshire/blog_content/blob/main/src"
 
 [rss]
 num_posts = 20
@@ -23,3 +25,8 @@ ttl       = 360
 [atom]
 num_posts = 20
 title     = "Pantonshire"
+
+[[contact]]
+name = "Twitter"
+user = "@pantonshire"
+url  = "https://twitter.com/pantonshire"

src/bin/blog_server/config.rs

@@ -7,25 +7,36 @@ use serde::{Deserialize, Deserializer};
 pub(crate) struct Config {
     pub bind: SocketAddr,
     pub concurrency_limit: usize,
-    pub static_dir: PathBuf,
-    pub favicon_dir: PathBuf,
-    pub robots_path: PathBuf,
-    pub posts_dir: PathBuf,
-    pub post_media_dir: PathBuf,
     #[serde(rename = "fs_event_delay_millis", deserialize_with = "deserialize_millis")]
     pub fs_event_delay: Duration,
     pub namespace_uuid: Uuid,
-    pub self_ref: SelfRefConfig,
+    pub content: ContentConfig,
+    pub github: GithubConfig,
+    pub site: SiteConfig,
     pub rss: RssConfig,
     pub atom: AtomConfig,
 }
 
 #[derive(Deserialize, Clone, Debug)]
-pub(crate) struct SelfRefConfig {
+pub(crate) struct SiteConfig {
     pub protocol: String,
     pub domain: String,
 }
 
+#[derive(Deserialize, Clone, Debug)]
+pub(crate) struct ContentConfig {
+    pub static_dir: PathBuf,
+    pub favicon_dir: PathBuf,
+    pub robots_path: PathBuf,
+    pub posts_dir: PathBuf,
+    pub post_media_dir: PathBuf,
+}
+
+#[derive(Deserialize, Clone, Debug)]
+pub(crate) struct GithubConfig {
+    pub source_url: Option<String>,
+}
+
 #[derive(Deserialize, Clone, Debug)]
 pub(crate) struct RssConfig {
     pub num_posts: usize,

src/bin/blog_server/context.rs

@@ -0,0 +1,31 @@
+use blog::db::ConcurrentPostsStore;
+
+use crate::Config;
+
+pub(crate) struct Context {
+    config: Config,
+    posts: ConcurrentPostsStore,
+}
+
+impl Context {
+    #[inline]
+    #[must_use]
+    pub(crate) fn new(config: Config, posts: ConcurrentPostsStore) -> Self {
+        Self {
+            config,
+            posts,
+        }
+    }
+
+    #[inline]
+    #[must_use]
+    pub(crate) fn config(&self) -> &Config {
+        &self.config
+    }
+
+    #[inline]
+    #[must_use]
+    pub(crate) fn posts(&self) -> &ConcurrentPostsStore {
+        &self.posts
+    }
+}

src/bin/blog_server/main.rs

@@ -1,4 +1,5 @@
 mod config;
+mod context;
 mod fs_watcher;
 mod render;
 mod service;
@@ -27,6 +28,7 @@ use blog::{
 };
 
 use config::Config;
+use context::Context;
 use render::Renderer;
 
 fn main() {
@@ -42,7 +44,7 @@ fn run() -> Result<(), Error> {
 
     // Load the configuration from the TOML config file specified by the first command-line
     // argument.
-    let config = Arc::new({
+    let config = {
         let config_path = env::args().nth(1)
             .ok_or(Error::NoConfig)?;
 
@@ -53,27 +55,25 @@ fn run() -> Result<(), Error> {
             
         contents.parse::<Config>()
             .map_err(Error::BadConfig)?
-    });
+    };
 
-    // Create the data structure used to store the rendered posts. This uses an `Arc` internally,
-    // so clones will point to the same underlying data.
-    let posts_store = ConcurrentPostsStore::new();
+    // Create the global context that will be used and modified throughout the program.
+    let context = Arc::new(Context::new(config, ConcurrentPostsStore::new()));
 
     let code_renderer = CodeBlockRenderer::new();
 
     // Create the post renderer and the mpsc channel that will be used to communicate with it.
     let (renderer, tx) = Renderer::new(
-        config.clone(),
-        posts_store.clone(),
+        context.clone(),
         code_renderer,
-        config.posts_dir.clone()
+        context.config().content.posts_dir.clone()
     );
 
     // Dropping the watcher stops its thread, so keep it alive until the server has stopped.
     let watcher = fs_watcher::start_watching(
         tx,
-        &config.posts_dir,
-        config.fs_event_delay
+        &context.config().content.posts_dir,
+        context.config().fs_event_delay
     )?;
 
     let renderer_handle = thread::spawn(move || {
@@ -88,7 +88,7 @@ fn run() -> Result<(), Error> {
         .enable_all()
         .build()
         .map_err(Error::TokioRuntime)?
-        .block_on(run_server(config, posts_store))?;
+        .block_on(run_server(context))?;
 
     info!("Stopped server");
 
@@ -105,17 +105,13 @@ fn run() -> Result<(), Error> {
     Ok(())
 }
 
-async fn run_server(
-    config: Arc<Config>,
-    posts_store: ConcurrentPostsStore,
-) -> Result<(), Error>
-{
-    let service = service::site_service(config.clone(), posts_store);
+async fn run_server(context: Arc<Context>) -> Result<(), Error> {
+    let service = service::site_service(context.clone());
 
-    info!(address = %config.bind, "Starting server");
+    info!(address = %context.config().bind, "Starting server");
 
-    Server::try_bind(&config.bind)
-        .map_err(|err| Error::Bind(config.bind, err))?
+    Server::try_bind(&context.config().bind)
+        .map_err(|err| Error::Bind(context.config().bind, err))?
         .serve(service.into_make_service())
         .with_graceful_shutdown(handle_interrupt())
         .await

src/bin/blog_server/render.rs

@@ -13,14 +13,12 @@ use tracing::{info, warn, error};
 use blog::{
     codeblock::CodeBlockRenderer,
     post::{Error as ParseError, Post, Id},
-    db::ConcurrentPostsStore,
 };
 
-use crate::Config;
+use crate::Context;
 
 pub(crate) struct Renderer {
-    config: Arc<Config>,
-    posts: ConcurrentPostsStore,
+    context: Arc<Context>,
     code_renderer: CodeBlockRenderer,
     posts_dir_path: PathBuf,
     rx: mpsc::Receiver<DebouncedEvent>,
@@ -28,8 +26,7 @@ pub(crate) struct Renderer {
 
 impl Renderer {
     pub(crate) fn new(
-        config: Arc<Config>,
-        posts: ConcurrentPostsStore,
+        context: Arc<Context>,
         code_renderer: CodeBlockRenderer,
         posts_dir_path: PathBuf,
     ) -> (Self, mpsc::Sender<DebouncedEvent>)
@@ -42,8 +39,7 @@ impl Renderer {
         tx.send(DebouncedEvent::Rescan).unwrap();
 
         (Self {
-            config,
-            posts,
+            context,
             code_renderer,
             posts_dir_path,
             rx,
@@ -106,7 +102,7 @@ impl Renderer {
     fn update(&self, target: &EventTarget) {
         match self.parse_post_from_target(target) {
             Ok(post) => {
-                let mut guard = self.posts.write_blocking();
+                let mut guard = self.context.posts().write_blocking();
                 guard.insert(post);
             },
             Err(err) => {
@@ -118,7 +114,7 @@ impl Renderer {
     #[tracing::instrument(skip(self))]
     fn rename(&self, old_target: &EventTarget, new_target: &EventTarget) {
         let post_res = self.parse_post_from_target(new_target);
-        let mut guard = self.posts.write_blocking();
+        let mut guard = self.context.posts().write_blocking();
         guard.remove(&old_target.id);
         match post_res {
             Ok(post) => {
@@ -132,7 +128,7 @@ impl Renderer {
 
     #[tracing::instrument(skip(self))]
     fn remove(&self, target: &EventTarget) {
-        let mut guard = self.posts.write_blocking();
+        let mut guard = self.context.posts().write_blocking();
         guard.remove(&target.id);
     }
 
@@ -168,7 +164,7 @@ impl Renderer {
             }
         }
         
-        let mut guard = self.posts.write_blocking();
+        let mut guard = self.context.posts().write_blocking();
         guard.clear();
         for post in posts {
             guard.insert(post);
@@ -204,7 +200,7 @@ impl Renderer {
     
         Post::new_from_str(
             &self.code_renderer,
-            self.config.namespace_uuid,
+            self.context.config().namespace_uuid,
             target.id.clone(),
             updated,
             &contents

src/bin/blog_server/service/atom.rs

@@ -3,22 +3,19 @@ use std::sync::Arc;
 use atom_syndication as atom;
 use axum::{body::Bytes, extract::Extension};
 
-use blog::{db::ConcurrentPostsStore, time::unix_epoch};
+use blog::time::unix_epoch;
 
-use crate::Config;
+use crate::Context;
 
 use super::response::Atom;
 
-pub(super) async fn handle(
-    Extension(config): Extension<Arc<Config>>,
-    Extension(posts): Extension<ConcurrentPostsStore>,
-) -> Atom<Bytes> {
+pub(super) async fn handle(Extension(context): Extension<Arc<Context>>) -> Atom<Bytes> {
     let (atom_entries, updated) = {
-        let guard = posts.read().await;
+        let guard = context.posts().read().await;
 
         let atom_entries = guard
             .iter_by_published()
-            .take(config.atom.num_posts)
+            .take(context.config().atom.num_posts)
             .map(|post| {
                 atom::EntryBuilder::default()
                     .id(format!("urn:uuid:{}", post.uuid()))
@@ -27,8 +24,8 @@ pub(super) async fn handle(
                     .links(vec![atom::LinkBuilder::default()
                         .href(format!(
                             "{}://{}/articles/{}",
-                            config.self_ref.protocol,
-                            config.self_ref.domain,
+                            context.config().site.protocol,
+                            context.config().site.domain,
                             post.id()
                         ))
                         .rel("alternate".to_owned())
@@ -50,21 +47,21 @@ pub(super) async fn handle(
 
     Atom(
         atom::FeedBuilder::default()
-            .id(format!("urn:uuid:{}", config.namespace_uuid))
-            .title(config.atom.title.clone())
+            .id(format!("urn:uuid:{}", context.config().namespace_uuid))
+            .title(context.config().atom.title.clone())
             .updated(updated)
             .links(vec![
                 atom::LinkBuilder::default()
                     .href(format!(
                         "{}://{}/atom.xml",
-                        config.self_ref.protocol, config.self_ref.domain
+                        context.config().site.protocol, context.config().site.domain
                     ))
                     .rel("self".to_owned())
                     .build(),
                 atom::LinkBuilder::default()
                     .href(format!(
                         "{}://{}/articles/",
-                        config.self_ref.protocol, config.self_ref.domain
+                        context.config().site.protocol, context.config().site.domain
                     ))
                     .rel("alternate".to_owned())
                     .mime_type(Some("text/html".to_owned()))

src/bin/blog_server/service/index.rs

@@ -1,13 +1,13 @@
+use std::sync::Arc;
+
 use axum::extract::Extension;
 use maud::html;
 
-use blog::db::ConcurrentPostsStore;
-
-use crate::template;
+use crate::{Context, template};
 
 use super::response::Html;
 
-pub(super) async fn handle(Extension(posts): Extension<ConcurrentPostsStore>) -> Html {
+pub(super) async fn handle(Extension(context): Extension<Arc<Context>>) -> Html {
     Html::new()
         .with_title_static("Pantonshire")
         .with_crawler_permissive()
@@ -49,7 +49,7 @@ pub(super) async fn handle(Extension(posts): Extension<ConcurrentPostsStore>) ->
                 h2 { "Articles" }
                 p { "Some recent ones:" }
                 ul .articles_list {
-                    @for post in posts.read().await.iter_by_published().rev().take(3) {
+                    @for post in context.posts().read().await.iter_by_published().rev().take(3) {
                         li {
                             h3 { a href={"/articles/" (post.id())} { (post.title()) } }
                             @if let Some(subtitle) = post.subtitle() {

src/bin/blog_server/service/post.rs

@@ -1,18 +1,18 @@
+use std::sync::Arc;
+
 use axum::extract::{Extension, Path};
 use maud::html;
 
-use blog::db::ConcurrentPostsStore;
-
-use crate::template;
+use crate::{Context, template};
 
 use super::response::{Error, Html};
 
 pub(super) async fn handle(
     Path(post_id): Path<String>,
-    Extension(posts): Extension<ConcurrentPostsStore>
+    Extension(context): Extension<Arc<Context>>,
 ) -> Result<Html, Error>
 {
-    let post = posts.get(&post_id)
+    let post = context.posts().get(&post_id)
         .await
         .ok_or(Error::PostNotFound)?;
 

src/bin/blog_server/service/posts_list.rs

@@ -1,13 +1,13 @@
+use std::sync::Arc;
+
 use axum::extract::Extension;
 use maud::html;
 
-use blog::db::ConcurrentPostsStore;
-
-use crate::template;
+use crate::{Context, template};
 
 use super::response::Html;
 
-pub(super) async fn handle(Extension(posts): Extension<ConcurrentPostsStore>) -> Html {
+pub(super) async fn handle(Extension(context): Extension<Arc<Context>>) -> Html {
     Html::new()
         .with_title_static("Articles")
         .with_crawler_permissive()
@@ -23,7 +23,7 @@ pub(super) async fn handle(Extension(posts): Extension<ConcurrentPostsStore>) ->
                     "A collection of words I have written, against my better judgement."
                 }
                 ul .articles_list {
-                    @for post in posts.read().await.iter_by_published().rev() {
+                    @for post in context.posts().read().await.iter_by_published().rev() {
                         li {
                             h3 { a href={"/articles/" (post.id())} { (post.title()) } }
                             @if let Some(subtitle) = post.subtitle() {

src/bin/blog_server/service/rss.rs

@@ -5,24 +5,18 @@ use axum::{
     extract::Extension,
 };
 
-use blog::{
-    db::ConcurrentPostsStore,
-    time::unix_epoch,
-};
+use blog::time::unix_epoch;
 
-use crate::Config;
+use crate::Context;
 
 use super::response::Rss;
 
-pub(super) async fn handle(
-    Extension(config): Extension<Arc<Config>>,
-    Extension(posts): Extension<ConcurrentPostsStore>,
-) -> Rss<Bytes> {
+pub(super) async fn handle(Extension(context): Extension<Arc<Context>>) -> Rss<Bytes> {
     let (rss_items, updated) = {
-        let guard = posts.read().await;
+        let guard = context.posts().read().await;
 
         let rss_items = guard.iter_by_published()
-            .take(config.rss.num_posts)
+            .take(context.config().rss.num_posts)
             .map(|post| {
                 rss::ItemBuilder::default()
                     .title(Some(post.title().to_owned()))
@@ -32,8 +26,8 @@ pub(super) async fn handle(
                         .build()))
                     .link(Some(format!(
                         "{}://{}/articles/{}",
-                        config.self_ref.protocol,
-                        config.self_ref.domain,
+                        context.config().site.protocol,
+                        context.config().site.domain,
                         post.id()
                     )))
                     .pub_date(Some(post.published().to_rfc2822()))
@@ -48,12 +42,12 @@ pub(super) async fn handle(
     };
 
     Rss(rss::ChannelBuilder::default()
-        .title(config.rss.title.clone())
+        .title(context.config().rss.title.clone())
         .link(format!(
             "{}://{}",
-            config.self_ref.protocol, config.self_ref.domain
+            context.config().site.protocol, context.config().site.domain
         ))
-        .ttl(Some(config.rss.ttl.to_string()))
+        .ttl(Some(context.config().rss.ttl.to_string()))
         .last_build_date(Some(updated.to_rfc2822()))
         .items(rss_items)
         .build()

src/bin/blog_server/service/site.rs

@@ -11,9 +11,7 @@ use tower::limit::ConcurrencyLimitLayer;
 use tower_http::trace::TraceLayer;
 use tracing::info;
 
-use blog::db::ConcurrentPostsStore;
-
-use crate::Config;
+use crate::Context;
 
 use super::{
     atom,
@@ -26,11 +24,7 @@ use super::{
     static_content,
 };
 
-pub(crate) fn service(
-    config: Arc<Config>,
-    posts_store: ConcurrentPostsStore,
-) -> Router
-{
+pub(crate) fn service(context: Arc<Context>) -> Router {
     Router::new()
         .route("/", get(index::handle))
         .route("/contact", get(contact::handle))
@@ -38,21 +32,20 @@ pub(crate) fn service(
         .route("/rss.xml", get(rss::handle))
         .route("/atom.xml", get(atom::handle))
         .route("/articles/:post_id", get(post::handle))
-        .route("/robots.txt", static_content::file_service(&config.robots_path, None))
-        .route("/favicon.ico", static_content::file_service(&config.favicon_dir.join("favicon.ico"), None))
-        .route("/favicon-16x16.png", static_content::file_service(&config.favicon_dir.join("favicon-16x16.png"), None))
-        .route("/favicon-32x32.png", static_content::file_service(&config.favicon_dir.join("favicon-32x32.png"), None))
-        .route("/apple-touch-icon.png", static_content::file_service(&config.favicon_dir.join("apple-touch-icon.png"), None))
-        .route("/android-chrome-192x192.png", static_content::file_service(&config.favicon_dir.join("android-chrome-192x192.png"), None))
-        .route("/android-chrome-512x512.png", static_content::file_service(&config.favicon_dir.join("android-chrome-512x512.png"), None))
-        .route("/site.webmanifest", static_content::file_service(&config.favicon_dir.join("site.webmanifest"), None))
-        .nest("/static", static_content::dir_service(&config.static_dir))
-        .nest("/article_media", static_content::dir_service(&config.post_media_dir))
+        .route("/robots.txt", static_content::file_service(&context.config().content.robots_path, None))
+        .route("/favicon.ico", static_content::file_service(&context.config().content.favicon_dir.join("favicon.ico"), None))
+        .route("/favicon-16x16.png", static_content::file_service(&context.config().content.favicon_dir.join("favicon-16x16.png"), None))
+        .route("/favicon-32x32.png", static_content::file_service(&context.config().content.favicon_dir.join("favicon-32x32.png"), None))
+        .route("/apple-touch-icon.png", static_content::file_service(&context.config().content.favicon_dir.join("apple-touch-icon.png"), None))
+        .route("/android-chrome-192x192.png", static_content::file_service(&context.config().content.favicon_dir.join("android-chrome-192x192.png"), None))
+        .route("/android-chrome-512x512.png", static_content::file_service(&context.config().content.favicon_dir.join("android-chrome-512x512.png"), None))
+        .route("/site.webmanifest", static_content::file_service(&context.config().content.favicon_dir.join("site.webmanifest"), None))
+        .nest("/static", static_content::dir_service(&context.config().content.static_dir))
+        .nest("/article_media", static_content::dir_service(&context.config().content.post_media_dir))
         .fallback(handle_fallback.into_service())
-        .layer(ConcurrencyLimitLayer::new(config.concurrency_limit))
+        .layer(ConcurrencyLimitLayer::new(context.config().concurrency_limit))
         .layer(TraceLayer::new_for_http())
-        .layer(Extension(config))
-        .layer(Extension(posts_store))
+        .layer(Extension(context))
 }
 
 async fn handle_fallback(uri: Uri) -> Error {

src/lib/db.rs

@@ -10,14 +10,13 @@ use tokio::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
 
 use crate::post::{Post, Id};
 
-#[derive(Clone)]
 pub struct ConcurrentPostsStore {
-    inner: Arc<RwLock<PostsStore>>,
+    inner: RwLock<PostsStore>,
 }
 
 impl ConcurrentPostsStore {
     pub fn new() -> Self {
-        Self { inner: Arc::new(RwLock::new(PostsStore::new())) }
+        Self { inner: RwLock::new(PostsStore::new()) }
     }
 
     pub async fn read(&self) -> RwLockReadGuard<'_, PostsStore> {