feat: add initial postgres

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/nocontrol/Cargo.toml

@@ -24,6 +24,19 @@ serde_json = "1.0.148"
 sha2 = "0.10.9"
 tokio-util = "0.7.18"
 
+sqlx = { version = "0.8.6", optional = true, features = [
+  "chrono",
+  "json",
+  "postgres",
+  "runtime-tokio",
+  "uuid",
+] }
+
+
 [dev-dependencies]
 insta = "1.46.0"
 tracing-test = { version = "0.2.5", features = ["no-env-filter"] }
+
+[features]
+default = []
+postgres = ["dep:sqlx"]

crates/nocontrol/migrations/postgres/20260118161914_initial.sql

@@ -0,0 +1 @@
+-- Add migration script here

crates/nocontrol/src/control_plane/backing_store.rs

@@ -10,6 +10,9 @@ use crate::{
 
 pub mod in_process;
 
+#[cfg(feature = "postgres")]
+pub mod postgres;
+
 #[derive(Clone)]
 pub struct BackingStore<T: Specification, TStore: BackingStoreEdge<T>> {
     inner: TStore,
@@ -42,6 +45,16 @@ impl<T: Specification> BackingStore<T, BackingStoreInProcess<T>> {
     }
 }
 
+#[cfg(feature = "postgres")]
+impl<T: Specification> BackingStore<T, postgres::BackingStorePostgres<T>> {
+    pub fn postgres(database_url: &str) -> Self {
+        Self {
+            inner: postgres::BackingStorePostgres::new(database_url),
+            _marker: PhantomData,
+        }
+    }
+}
+
 pub trait BackingStoreEdge<T: Specification>: Send + Sync + Clone {
     fn get_owned_and_potential_leases(
         &self,

crates/nocontrol/src/control_plane/backing_store/postgres.rs

@@ -0,0 +1,72 @@
+use std::marker::PhantomData;
+
+use anyhow::Context;
+use sqlx::PgPool;
+
+use crate::{Specification, stores::BackingStoreEdge};
+
+#[derive(Clone)]
+pub struct BackingStorePostgres<T: Specification> {
+    pool: PgPool,
+    _marker: PhantomData<T>,
+}
+impl<T: Specification> BackingStorePostgres<T> {
+    pub(crate) async fn new(database_url: &str) -> anyhow::Result<Self> {
+        let pool = sqlx::PgPool::connect(database_url)
+            .await
+            .context("failed to connect to database")?;
+
+        sqlx::migrate!("migrations/postgres/")
+            .run(&pool)
+            .await
+            .context("failed to migrate")?;
+
+        Ok(Self {
+            _marker: PhantomData,
+            pool,
+        })
+    }
+}
+
+impl<T: Specification> BackingStoreEdge<T> for BackingStorePostgres<T> {
+    async fn get_owned_and_potential_leases(
+        &self,
+        worker_id: &uuid::Uuid,
+    ) -> anyhow::Result<Vec<crate::manifests::ManifestState<T>>> {
+        todo!()
+    }
+
+    async fn get_manifests(&self) -> anyhow::Result<Vec<crate::manifests::ManifestState<T>>> {
+        todo!()
+    }
+
+    async fn get(&self, name: &str) -> anyhow::Result<Option<crate::manifests::ManifestState<T>>> {
+        todo!()
+    }
+
+    async fn update_lease(
+        &self,
+        manifest_state: &crate::manifests::ManifestState<T>,
+    ) -> anyhow::Result<()> {
+        todo!()
+    }
+
+    async fn acquire_lease(
+        &self,
+        manifest_state: &crate::manifests::ManifestState<T>,
+        worker_id: &crate::manifests::WorkerId,
+    ) -> anyhow::Result<()> {
+        todo!()
+    }
+
+    async fn upsert_manifest(&self, manifest: crate::manifests::Manifest<T>) -> anyhow::Result<()> {
+        todo!()
+    }
+
+    async fn update_state(
+        &self,
+        manifest: &crate::manifests::ManifestState<T>,
+    ) -> anyhow::Result<()> {
+        todo!()
+    }
+}

mise.toml

@@ -8,3 +8,15 @@ run = "cargo nextest run"
 [tasks.example]
 alias = "e"
 run = "cargo run --bin kubernetes-like"
+
+[tasks."example:postgres"]
+run = "cargo run --bin postgres-backed"
+
+[tasks."local:up"]
+run = "docker compose -f ./templates/docker/docker-compose.yml up -d --remove-orphans --wait"
+
+[tasks."local:down"]
+run = "docker compose -f ./templates/docker/docker-compose.yml down"
+
+[tasks."local:logs"]
+run = "docker compose -f ./templates/docker/docker-compose.yml logs -f --tail=500"

templates/docker/docker-compose.yml

@@ -0,0 +1,20 @@
+services:
+  postgres:
+    image: postgres:18
+    environment:
+      POSTGRES_USER: devuser
+      POSTGRES_PASSWORD: devpassword
+      POSTGRES_DB: dev
+    ports:
+      - "5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U devuser -d dev"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    volumes:
+      - ${PWD}/fs/volumes/postgres/docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
+    command:
+      - "postgres"
+      - "-c"
+      - "wal_level=logical" #required for MaterializedPostgreSQL