feat: Add user resource w/database as storage

controller/Cargo.toml

@@ -15,10 +15,12 @@ schemars.workspace = true
 serde.workspace = true
 slog-async.workspace = true
 slog.workspace = true
+sqlx = { version = "0.8.3", features = ["postgres", "runtime-tokio", "tls-rustls", "time", "uuid"] }
 tokio.workspace = true
 trace-request = { path = "../trace-request" }
 tracing-slog.workspace = true
 tracing.workspace = true
+uuid.workspace = true
 
 [package.metadata.cargo-machete]
 ignored = ["http"]

controller/migrations/20250108132540_users.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS patagia.public.Users(
+    id            UUID PRIMARY KEY,
+    name          VARCHAR(63) NOT NULL,
+    time_deleted  TIMESTAMP WITH TIME ZONE, -- non-NULL if deleted
+    time_created  TIMESTAMP WITH TIME ZONE NOT NULL,
+    time_modified TIMESTAMP WITH TIME ZONE NOT NULL
+);

controller/src/api.rs

@@ -4,12 +4,14 @@ use dropshot::ApiDescription;
 use std::sync::Arc;
 
 use crate::context::ControllerContext;
+use crate::user;
 use crate::version;
 
 type ControllerApiDescription = ApiDescription<Arc<ControllerContext>>;
 
 pub fn api() -> Result<ControllerApiDescription> {
     let mut api = ControllerApiDescription::new();
+    api.register(user::get_user_by_id)?;
     api.register(version::version)?;
     Ok(api)
 }

controller/src/bin/patagia-controller.rs

@@ -1,8 +1,8 @@
 use anyhow::{anyhow, Result};
 use clap::Parser;
 use dropshot::{ConfigDropshot, ServerBuilder};
-
 use slog::Drain;
+use sqlx::postgres::PgPool;
 use tracing_slog::TracingSlogDrain;
 
 use std::net::SocketAddr;
@@ -30,12 +30,19 @@ struct Cli {
     )]
     log_stderr: bool,
 
+     #[arg(
+         long = "listen-address",
+         default_value = "0.0.0.0:9474",
+         env = "LISTEN_ADDRESS"
+     )]
+     listen_address: String,
+
     #[arg(
-        long = "listen-address",
-        default_value = "0.0.0.0:9474",
-        env = "LISTEN_ADDRESS"
+        long = "database-url",
+        default_value = "postgresql://localhost/patagia",
+        env = "DATABASE_URL"
     )]
-    listen_address: String,
+    database_url: Option<String>,
 }
 
 #[tokio::main]
@@ -57,7 +64,13 @@ async fn main() -> Result<()> {
         slog::Logger::root(async_drain, slog::o!())
     };
 
-    let ctx = ControllerContext::new();
+    let database_url = args.database_url.unwrap();
+
+    tracing::info!(database_url, listen_address=args.listen_address, "Starting server");
+
+    let pg = PgPool::connect(&database_url).await?;
+
+    let ctx = ControllerContext::new(pg);
     let api = api::api()?;
     ServerBuilder::new(api, Arc::new(ctx), logger)
         .config(config)

controller/src/context.rs

@@ -1,13 +1,13 @@
-pub struct ControllerContext {}
+use sqlx::postgres::PgPool;
+
+pub struct ControllerContext {
+    pub pg_pool: PgPool,
+}
 
 impl ControllerContext {
-    pub fn new() -> ControllerContext {
-        ControllerContext {}
-    }
-}
-
-impl Default for ControllerContext {
-    fn default() -> Self {
-        Self::new()
+    pub fn new(pg_pool : PgPool) -> ControllerContext {
+        ControllerContext {
+            pg_pool
+        }
     }
 }

controller/src/lib.rs

@@ -1,4 +1,5 @@
 pub mod api;
 pub mod context;
 
+mod user;
 mod version;

controller/src/user.rs

@@ -0,0 +1,56 @@
+use dropshot::{endpoint, HttpError, HttpResponseOk, Path, RequestContext};
+use schemars::JsonSchema;
+use serde::{Deserialize, Serialize};
+use trace_request::trace_request;
+use uuid::Uuid;
+
+use std::sync::Arc;
+
+use crate::context::ControllerContext;
+
+/// User
+#[derive(Serialize, JsonSchema)]
+struct User {
+    id: Uuid,
+    name: String,
+}
+
+#[allow(dead_code)]
+#[derive(Deserialize, JsonSchema)]
+#[serde(rename_all = "camelCase")]
+struct UsersPathParams {
+    user_id: Uuid,
+}
+
+/// Fetch user info.
+#[endpoint {
+    method = GET,
+    path = "/users/{userId}",
+    tags = [ "user" ],
+}]
+#[trace_request]
+pub(crate) async fn get_user_by_id(
+    rqctx: RequestContext<Arc<ControllerContext>>,
+    params: Path<UsersPathParams>,
+) -> Result<HttpResponseOk<User>, HttpError> {
+    let id = params.into_inner().user_id;
+    tracing::debug!(id = id.to_string(), "Getting user by id");
+
+    let pg = rqctx.context().pg_pool.to_owned();
+
+    let rec = sqlx::query!(r#"SELECT * FROM users WHERE id = $1"#, id)
+        .fetch_one(&pg)
+        .await
+        .map_err(|e| match e {
+            sqlx::Error::RowNotFound => HttpError::for_not_found(None, format!("User not found by id: {:?}", id)),
+            err => HttpError::for_internal_error( format!("Error: {}", err))
+        }
+        )?;
+
+    let user = User {
+        id: rec.id,
+        name: rec.name,
+    };
+
+    Ok(HttpResponseOk(user))
+}