Add built-in back implementations for USDPL services, disable code gen for them by default (only usdpl-back needs to generate them)

usdpl-back/build.rs

@@ -0,0 +1,6 @@
+fn main() {
+    usdpl_build::back::build_with_custom_builtins(
+        [].into_iter(),
+        [].into_iter(),
+    )
+}

usdpl-back/src/lib.rs

@@ -12,6 +12,7 @@ mod api_common;
 mod api_decky;
 
 mod rpc;
+mod services_impl;
 
 //mod errors;
 mod websockets;
@@ -19,6 +20,13 @@ mod websockets;
 pub use websockets::WebsocketServer as Server;
 //pub use errors::{ServerError, ServerResult};
 
+
+#[allow(missing_docs)]
+#[allow(dead_code)]
+pub(crate) mod services {
+    include!(concat!(env!("OUT_DIR"), "/mod.rs"));
+}
+
 /// USDPL backend API.
 /// This contains functionality used exclusively by the back-end.
 pub mod api {

usdpl-back/src/rpc/registry.rs

@@ -12,15 +12,6 @@ pub struct ServiceRegistry<'a> {
 }
 
 impl<'a> ServiceRegistry<'a> {
-    /*pub async fn call(&self, package: &str, service: &str, method: &str, data: bytes::Bytes) -> Result<bytes::Bytes, ServiceError> {
-        let key = Self::descriptor(package, service);
-        self.call_descriptor(&key, method, data).await
-    }
-
-    fn descriptor(package: &str, service: &str) -> String {
-        format!("{}.{}", package, service)
-    }*/
-
     pub async fn call_descriptor<'b: 'a>(
         &mut self,
         descriptor: &str,
@@ -43,7 +34,10 @@ impl<'a> ServiceRegistry<'a> {
         self
     }
 
-    pub fn new() -> Self {
-        Self::default()
+    pub fn with_builtins() -> Self {
+        let mut reg = Self::default();
+        reg.register(crate::services::usdpl::DevToolsServer::new(crate::services_impl::DevTools{}))
+            .register(crate::services::usdpl::TranslationsServer::new(crate::services_impl::Translations{}));
+        reg
     }
 }

usdpl-back/src/services_impl/dev_tools.rs

@@ -0,0 +1,22 @@
+use crate::services::usdpl as generated;
+
+/// Built-in dev tools service implementation
+pub(crate) struct DevTools {}
+
+#[async_trait::async_trait]
+impl<'a> generated::IDevTools<'a> for DevTools {
+    async fn log(
+        &mut self,
+        input: generated::LogMessage,
+    ) -> Result<generated::Empty, Box<dyn std::error::Error + Send>> {
+        match input.level {
+            lvl if lvl == generated::LogLevel::Trace as _ => log::trace!("{}", input.msg),
+            lvl if lvl == generated::LogLevel::Debug as _ => log::debug!("{}", input.msg),
+            lvl if lvl == generated::LogLevel::Info as _ => log::info!("{}", input.msg),
+            lvl if lvl == generated::LogLevel::Warn as _ => log::warn!("{}", input.msg),
+            lvl if lvl == generated::LogLevel::Error as _ => log::error!("{}", input.msg),
+            lvl => return Err(Box::<dyn std::error::Error + Send + Sync>::from(format!("Unexpected input log level {}", lvl)))
+        }
+        Ok(generated::Empty{ ok: true })
+    }
+}

usdpl-back/src/services_impl/mod.rs

@@ -0,0 +1,5 @@
+mod dev_tools;
+pub(crate) use dev_tools::DevTools;
+
+mod translations;
+pub(crate) use translations::Translations;

usdpl-back/src/services_impl/translations.rs

@@ -0,0 +1,31 @@
+use crate::services::usdpl as generated;
+
+/// Built-in translation service implementation
+pub(crate) struct Translations {}
+
+#[async_trait::async_trait]
+impl<'a> generated::ITranslations<'a> for Translations {
+    async fn get_language(
+        &mut self,
+        input: generated::LanguageRequest,
+    ) -> Result<generated::TranslationsReply, Box<dyn std::error::Error + Send>> {
+        let catalog = load_locale(&input.lang).map_err(|e| Box::new(e) as _)?;
+        let catalog_map = catalog.nalltext();
+        let mut map = std::collections::HashMap::with_capacity(catalog_map.len());
+        for (key, val) in catalog_map.into_iter() {
+            if val.len() > 1 {
+                log::warn!("Translations key {} for language {} has plural entries which aren't currently supported", key, input.lang);
+            }
+            if let Some(val_0) = val.get(0) {
+                map.insert(key.to_owned(), val_0.to_owned());
+            }
+        }
+        Ok(generated::TranslationsReply { translations: map })
+    }
+}
+
+fn load_locale(lang: &str) -> Result<gettext_ng::Catalog, gettext_ng::Error> {
+    let path = crate::api::dirs::plugin().unwrap_or_else(|| "".into()).join("translations").join(format!("{}.mo", lang));
+    let file = std::fs::File::open(path).map_err(|e| gettext_ng::Error::Io(e))?;
+    gettext_ng::Catalog::parse(file)
+}

usdpl-back/src/websockets.rs

@@ -21,7 +21,7 @@ impl WebsocketServer {
     /// Initialise an instance of the back-end websocket server
     pub fn new(port_usdpl: u16) -> Self {
         Self {
-            services: StaticServiceRegistry::new(),
+            services: StaticServiceRegistry::with_builtins(),
             port: port_usdpl,
         }
     }

usdpl-build/src/back/mod.rs

@@ -1,6 +1,16 @@
 pub fn build(
     custom_protos: impl Iterator<Item = String>,
     custom_dirs: impl Iterator<Item = String>,
+) {
+    nrpc_build::compile_servers(
+        custom_protos,
+        crate::proto_out_paths(custom_dirs),
+    )
+}
+
+pub fn build_with_custom_builtins(
+    custom_protos: impl Iterator<Item = String>,
+    custom_dirs: impl Iterator<Item = String>,
 ) {
     crate::dump_protos_out().unwrap();
     nrpc_build::compile_servers(