init: scaffold from k-template with postgres + worker

This commit is contained in:
2026-05-31 03:08:38 +02:00
commit f9cb142c3b
70 changed files with 5269 additions and 0 deletions

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use std::sync::Arc;
use async_trait::async_trait;
use bytes::Bytes;
use futures::stream::StreamExt;
use object_store::{ObjectStore, path::Path, Error as OsError};
use domain::errors::DomainError;
use domain::ports::{DataStream, StorageReader, StorageWriter};
pub struct ObjectStorageAdapter {
store: Arc<dyn ObjectStore>,
prefix: String,
}
impl ObjectStorageAdapter {
pub fn new(store: Arc<dyn ObjectStore>, prefix: impl Into<String>) -> Result<Self, DomainError> {
let prefix = prefix.into();
if !prefix.is_empty() {
validate_key(&prefix)?;
}
Ok(Self { store, prefix })
}
fn path(&self, key: &str) -> Path {
if self.prefix.is_empty() {
Path::from(key)
} else {
Path::from(format!("{}/{key}", self.prefix))
}
}
}
fn map_err(e: OsError, key: &str) -> DomainError {
match e {
OsError::NotFound { .. } => DomainError::NotFound(key.to_string()),
e => DomainError::Internal(e.to_string()),
}
}
fn validate_key(key: &str) -> Result<(), DomainError> {
if key.is_empty() {
return Err(DomainError::Validation("storage key must not be empty".into()));
}
if key.starts_with('/') {
return Err(DomainError::Validation(
format!("storage key must not start with '/': {key}"),
));
}
if key.split('/').any(|seg| seg == ".." || seg == ".") {
return Err(DomainError::Validation(
format!("storage key contains invalid path segment: {key}"),
));
}
Ok(())
}
#[async_trait]
impl StorageWriter for ObjectStorageAdapter {
async fn put(&self, key: &str, data: DataStream) -> Result<(), DomainError> {
validate_key(key)?;
let path = self.path(key);
let mut upload = self
.store
.put_multipart(&path)
.await
.map_err(|e| DomainError::Internal(e.to_string()))?;
let mut stream = data;
while let Some(result) = stream.next().await {
match result {
Ok(bytes) => {
if let Err(e) = upload.put_part(bytes.into()).await {
let _ = upload.abort().await;
return Err(DomainError::Internal(e.to_string()));
}
}
Err(e) => {
let _ = upload.abort().await;
return Err(e);
}
}
}
upload.complete().await.map_err(|e| DomainError::Internal(e.to_string()))?;
Ok(())
}
async fn delete(&self, key: &str) -> Result<(), DomainError> {
validate_key(key)?;
let path = self.path(key);
match self.store.delete(&path).await {
Ok(()) => Ok(()),
Err(OsError::NotFound { .. }) => Ok(()),
Err(e) => Err(DomainError::Internal(e.to_string())),
}
}
}
#[async_trait]
impl StorageReader for ObjectStorageAdapter {
async fn get(&self, key: &str) -> Result<DataStream, DomainError> {
validate_key(key)?;
let path = self.path(key);
let result = self
.store
.get(&path)
.await
.map_err(|e| map_err(e, key))?;
let s = result
.into_stream()
.map(|r| r.map_err(|e| DomainError::Internal(e.to_string())));
Ok(Box::pin(s))
}
async fn list(&self, prefix: Option<&str>) -> Result<Vec<String>, DomainError> {
if let Some(p) = prefix {
validate_key(p)?;
}
let list_prefix = match (prefix, self.prefix.is_empty()) {
(Some(p), false) => Some(Path::from(format!("{}/{p}", self.prefix))),
(Some(p), true) => Some(Path::from(p)),
(None, false) => Some(Path::from(self.prefix.as_str())),
(None, true) => None,
};
let mut result = Vec::new();
let mut stream = self.store.list(list_prefix.as_ref());
while let Some(meta) = stream.next().await {
let meta = meta.map_err(|e| DomainError::Internal(e.to_string()))?;
let key = meta.location.to_string();
let stripped = if !self.prefix.is_empty() {
key.strip_prefix(&format!("{}/", self.prefix))
.ok_or_else(|| DomainError::Internal(format!(
"listed key '{key}' does not start with expected prefix '{}'",
self.prefix
)))?
.to_string()
} else {
key
};
result.push(stripped);
}
Ok(result)
}
}
#[cfg(test)]
mod tests {
use super::*;
use domain::ports::{StorageReader, StorageWriter};
use futures::stream;
use object_store::memory::InMemory;
fn make_adapter() -> ObjectStorageAdapter {
ObjectStorageAdapter::new(Arc::new(InMemory::new()), "test").unwrap()
}
fn one_shot(data: &'static [u8]) -> DataStream {
Box::pin(stream::once(async move { Ok(Bytes::from(data)) }))
}
#[tokio::test]
async fn put_get_roundtrip() {
let a = make_adapter();
a.put("hello.txt", one_shot(b"world")).await.unwrap();
let mut s = a.get("hello.txt").await.unwrap();
let mut out = Vec::new();
while let Some(chunk) = s.next().await {
out.extend_from_slice(&chunk.unwrap());
}
assert_eq!(out, b"world");
}
#[tokio::test]
async fn get_missing_is_not_found() {
let a = make_adapter();
assert!(matches!(a.get("nope.txt").await, Err(DomainError::NotFound(_))));
}
#[tokio::test]
async fn delete_is_idempotent() {
let a = make_adapter();
a.delete("nope.txt").await.unwrap();
}
#[tokio::test]
async fn delete_removes_key() {
let a = make_adapter();
a.put("file.txt", one_shot(b"data")).await.unwrap();
a.delete("file.txt").await.unwrap();
assert!(matches!(a.get("file.txt").await, Err(DomainError::NotFound(_))));
}
#[tokio::test]
async fn list_returns_keys_under_prefix() {
let a = make_adapter();
a.put("docs/readme.txt", one_shot(b"x")).await.unwrap();
a.put("docs/guide.txt", one_shot(b"y")).await.unwrap();
a.put("other/file.txt", one_shot(b"z")).await.unwrap();
let keys = a.list(Some("docs")).await.unwrap();
assert_eq!(keys.len(), 2);
assert!(keys.iter().any(|k| k.ends_with("readme.txt")));
assert!(keys.iter().any(|k| k.ends_with("guide.txt")));
}
#[tokio::test]
async fn list_none_returns_all() {
let a = make_adapter();
a.put("a.txt", one_shot(b"1")).await.unwrap();
a.put("b.txt", one_shot(b"2")).await.unwrap();
let keys = a.list(None).await.unwrap();
assert_eq!(keys.len(), 2);
}
#[tokio::test]
async fn rejects_empty_key() {
let a = make_adapter();
assert!(matches!(a.put("", one_shot(b"x")).await, Err(DomainError::Validation(_))));
assert!(matches!(a.get("").await, Err(DomainError::Validation(_))));
assert!(matches!(a.delete("").await, Err(DomainError::Validation(_))));
}
#[tokio::test]
async fn rejects_absolute_key() {
let a = make_adapter();
assert!(matches!(
a.put("/etc/passwd", one_shot(b"x")).await,
Err(DomainError::Validation(_))
));
}
#[tokio::test]
async fn rejects_path_traversal() {
let a = make_adapter();
assert!(matches!(a.get("../escape").await, Err(DomainError::Validation(_))));
assert!(matches!(a.get("a/../../../etc").await, Err(DomainError::Validation(_))));
}
#[tokio::test]
async fn rejects_dot_segment() {
let a = make_adapter();
assert!(matches!(
a.put("./file.txt", one_shot(b"x")).await,
Err(DomainError::Validation(_))
));
}
#[tokio::test]
async fn rejects_invalid_list_prefix() {
let a = make_adapter();
assert!(matches!(a.list(Some("")).await, Err(DomainError::Validation(_))));
assert!(matches!(a.list(Some("../escape")).await, Err(DomainError::Validation(_))));
}
#[tokio::test]
async fn put_overwrites_existing() {
let a = make_adapter();
a.put("file.txt", one_shot(b"version1")).await.unwrap();
a.put("file.txt", one_shot(b"version2")).await.unwrap();
let mut s = a.get("file.txt").await.unwrap();
let mut out = Vec::new();
while let Some(chunk) = s.next().await {
out.extend_from_slice(&chunk.unwrap());
}
assert_eq!(out, b"version2");
}
#[tokio::test]
async fn list_returns_exact_key_paths() {
let a = make_adapter();
a.put("docs/readme.txt", one_shot(b"x")).await.unwrap();
let mut keys = a.list(Some("docs")).await.unwrap();
keys.sort();
assert_eq!(keys, vec!["docs/readme.txt"]);
}
#[tokio::test]
async fn put_bytes_get_bytes_roundtrip() {
let a = make_adapter();
a.put_bytes("data.bin", Bytes::from("hello bytes")).await.unwrap();
let got = a.get_bytes("data.bin").await.unwrap();
assert_eq!(got.as_ref(), b"hello bytes");
}
#[tokio::test]
async fn get_bytes_missing_is_not_found() {
let a = make_adapter();
assert!(matches!(a.get_bytes("nope.bin").await, Err(DomainError::NotFound(_))));
}
#[test]
fn new_rejects_traversal_prefix() {
let result = ObjectStorageAdapter::new(Arc::new(InMemory::new()), "../evil");
assert!(matches!(result, Err(DomainError::Validation(_))));
}
#[test]
fn new_rejects_absolute_prefix() {
let result = ObjectStorageAdapter::new(Arc::new(InMemory::new()), "/root");
assert!(matches!(result, Err(DomainError::Validation(_))));
}
#[test]
fn new_accepts_empty_prefix() {
assert!(ObjectStorageAdapter::new(Arc::new(InMemory::new()), "").is_ok());
}
#[test]
fn new_accepts_valid_prefix() {
assert!(ObjectStorageAdapter::new(Arc::new(InMemory::new()), "my-bucket/data").is_ok());
}
}

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use std::sync::Arc;
use anyhow::{Context, Result};
use object_store::ObjectStore;
use object_store::local::LocalFileSystem;
/// All storage configuration. Populate once via `from_env()` and pass
/// explicitly to `build_store` and `ObjectStorageAdapter::new`.
#[derive(Debug, Clone)]
pub struct StorageConfig {
pub backend: String,
pub prefix: String,
// local backend:
pub local_path: Option<String>,
// s3/minio backend:
pub s3_endpoint: Option<String>,
pub s3_access_key_id: Option<String>,
pub s3_secret_access_key: Option<String>,
pub s3_bucket: Option<String>,
pub s3_region: Option<String>,
// gcs backend:
pub gcs_bucket: Option<String>,
}
impl StorageConfig {
pub fn from_env() -> Result<Self> {
Ok(Self {
backend: std::env::var("STORAGE_BACKEND")
.context("STORAGE_BACKEND must be set (local, s3, gcs)")?,
prefix: std::env::var("STORAGE_PREFIX").unwrap_or_default(),
local_path: std::env::var("STORAGE_PATH").ok(),
s3_endpoint: std::env::var("S3_ENDPOINT").ok(),
s3_access_key_id: std::env::var("S3_ACCESS_KEY_ID").ok(),
s3_secret_access_key: std::env::var("S3_SECRET_ACCESS_KEY").ok(),
s3_bucket: std::env::var("S3_BUCKET").ok(),
s3_region: std::env::var("S3_REGION").ok(),
gcs_bucket: std::env::var("GCS_BUCKET").ok(),
})
}
}
pub fn build_store(config: &StorageConfig) -> Result<Arc<dyn ObjectStore>> {
match config.backend.as_str() {
"local" => {
let path = config.local_path.as_deref()
.context("STORAGE_PATH must be set when STORAGE_BACKEND=local")?;
std::fs::create_dir_all(path)
.with_context(|| format!("failed to create storage dir: {path}"))?;
let store = LocalFileSystem::new_with_prefix(path)?;
Ok(Arc::new(store))
}
#[cfg(feature = "s3")]
"s3" => {
use object_store::aws::AmazonS3Builder;
let store = AmazonS3Builder::new()
.with_endpoint(
config.s3_endpoint.as_deref().context("S3_ENDPOINT must be set")?,
)
.with_access_key_id(
config.s3_access_key_id.as_deref()
.context("S3_ACCESS_KEY_ID must be set")?,
)
.with_secret_access_key(
config.s3_secret_access_key.as_deref()
.context("S3_SECRET_ACCESS_KEY must be set")?,
)
.with_bucket_name(
config.s3_bucket.as_deref().context("S3_BUCKET must be set")?,
)
.with_region(config.s3_region.as_deref().unwrap_or("us-east-1"))
.with_allow_http(true)
.build()?;
Ok(Arc::new(store))
}
#[cfg(feature = "gcs")]
"gcs" => {
use object_store::gcp::GoogleCloudStorageBuilder;
let store = GoogleCloudStorageBuilder::new()
.with_bucket_name(
config.gcs_bucket.as_deref().context("GCS_BUCKET must be set")?,
)
.build()?;
Ok(Arc::new(store))
}
other => anyhow::bail!(
"unknown STORAGE_BACKEND={other:?}; compiled features: local{}{}",
if cfg!(feature = "s3") { ", s3" } else { "" },
if cfg!(feature = "gcs") { ", gcs" } else { "" },
),
}
}

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pub mod adapter;
pub mod config;
pub use adapter::ObjectStorageAdapter;
pub use config::{build_store, StorageConfig};