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safety(services): replace placeholder stubs with proper error handling

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- ml_training_service: health check now validates orchestrator readiness
  via AtomicBool flag instead of always returning "healthy"
- broker_gateway_service: replace hardcoded $100k account data with
  explicit FAILED_PRECONDITION errors for unimplemented broker queries
- data_acquisition_service: spawn background download task instead of
  leaving jobs stuck in Pending, add real health check with job counts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
jgrusewski
2026-02-22 10:32:38 +01:00
parent 2e43600bda
commit 328bf202ae
4 changed files with 142 additions and 38 deletions
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43
services/broker_gateway_service/src/service.rs
View File

@@ -277,20 +277,15 @@ impl broker_gateway_service_server::BrokerGatewayService for BrokerGatewayServic
let req = request.into_inner();
info!("GetAccountState called: account_id={}", req.account_id);
// MVP: Return placeholder data (no actual broker query)
let response = GetAccountStateResponse {
account_id: req.account_id,
cash_balance: 100_000.0,
equity: 100_000.0,
margin_used: 0.0,
margin_available: 100_000.0,
buying_power: 400_000.0, // 4x leverage
unrealized_pnl: 0.0,
realized_pnl: 0.0,
last_updated: chrono::Utc::now().timestamp_nanos_opt().unwrap_or(0),
};
Ok(Response::new(response))
// Broker account query not yet implemented — return explicit error
// rather than silently returning hardcoded fake data
warn!(
account_id = %req.account_id,
"get_account_state called but broker query is not implemented — returning error"
);
Err(Status::failed_precondition(
"Account state query not yet implemented — broker connection MVP does not support live account queries",
))
}
#[instrument(skip(self), fields(account_id))]
@@ -304,16 +299,16 @@ impl broker_gateway_service_server::BrokerGatewayService for BrokerGatewayServic
req.account_id, req.symbol
);
// MVP: Return empty positions (no actual broker query)
let response = GetPositionsResponse {
positions: vec![],
total_equity: 100_000.0,
total_exposure: 0.0,
leverage_ratio: 0.0,
timestamp: chrono::Utc::now().timestamp_nanos_opt().unwrap_or(0),
};
Ok(Response::new(response))
// Broker position query not yet implemented — return explicit error
// rather than silently returning empty positions with fake equity
warn!(
account_id = %req.account_id,
symbol = ?req.symbol,
"get_positions called but broker query is not implemented — returning error"
);
Err(Status::failed_precondition(
"Position query not yet implemented — broker connection MVP does not support live position queries",
))
}
#[instrument(skip(self))]

78
services/data_acquisition_service/src/service.rs
View File

@@ -114,7 +114,53 @@ impl DataAcquisitionService for DataAcquisitionServiceImpl {
store.insert(job_id.to_string(), job_details.clone());
}
// TODO: Start background download task
// Spawn background download task
{
let job_store = Arc::clone(&self.job_store);
let downloader = Arc::clone(&self.downloader);
let job_id_str = job_id.to_string();
let download_job = crate::downloader::DownloadJob {
job_id,
dataset: req.dataset.clone(),
symbols: req.symbols.clone(),
start_date: req.start_date.clone(),
end_date: req.end_date.clone(),
schema: req.schema.clone(),
priority: req.priority as i32,
};
tokio::spawn(async move {
// Mark as downloading
{
let mut store = job_store.write().await;
if let Some(job) = store.get_mut(&job_id_str) {
job.status = DownloadStatus::Downloading as i32;
job.started_at = chrono::Utc::now().timestamp();
}
}
match downloader.download(&download_job).await {
Ok(path) => {
let mut store = job_store.write().await;
if let Some(job) = store.get_mut(&job_id_str) {
job.status = DownloadStatus::Completed as i32;
job.progress_percentage = 100.0;
job.completed_at = chrono::Utc::now().timestamp();
job.local_path = path.to_string_lossy().to_string();
}
}
Err(e) => {
let mut store = job_store.write().await;
if let Some(job) = store.get_mut(&job_id_str) {
job.status = DownloadStatus::Failed as i32;
job.completed_at = chrono::Utc::now().timestamp();
job.error_message = e.to_string();
job.retry_count += 1;
}
}
}
});
}
Ok(Response::new(ScheduleDownloadResponse {
job_id: job_id.to_string(),
@@ -147,7 +193,6 @@ impl DataAcquisitionService for DataAcquisitionServiceImpl {
) -> Result<Response<CancelDownloadResponse>, Status> {
let req = request.into_inner();
// TODO: Implement actual cancellation logic
let job_id = Uuid::parse_str(&req.job_id)
.map_err(|e| Status::invalid_argument(format!("Invalid job ID: {}", e)))?;
@@ -232,11 +277,38 @@ impl DataAcquisitionService for DataAcquisitionServiceImpl {
let mut details = std::collections::HashMap::new();
details.insert("service".to_string(), "data_acquisition".to_string());
details.insert("version".to_string(), env!("CARGO_PKG_VERSION").to_string());
// Check job store accessibility
let store = self.job_store.read().await;
let total_jobs = store.len();
let active_jobs = store
.values()
.filter(|j| j.status == DownloadStatus::Downloading as i32)
.count();
let failed_jobs = store
.values()
.filter(|j| j.status == DownloadStatus::Failed as i32)
.count();
drop(store);
// Check downloader active count
let active_downloads = self.downloader.active_download_count().await;
details.insert("total_jobs".to_string(), total_jobs.to_string());
details.insert("active_jobs".to_string(), active_jobs.to_string());
details.insert("failed_jobs".to_string(), failed_jobs.to_string());
details.insert(
"active_downloads".to_string(),
active_downloads.to_string(),
);
details.insert("status".to_string(), "operational".to_string());
Ok(Response::new(HealthCheckResponse {
healthy: true,
message: "Service is healthy".to_string(),
message: format!(
"Service is healthy: {} active downloads, {} total jobs",
active_downloads, total_jobs
),
details,
}))
}

48
services/ml_training_service/src/health.rs
View File

@@ -1,11 +1,28 @@
//! Health check endpoints for backtesting service
//! Health check endpoints for ML training service
//!
//! Provides HTTP-based health and readiness endpoints that don't require TLS,
//! allowing Docker Compose health checks to work without client certificates.
//! allowing Docker Compose / Kubernetes health checks to work without client certificates.
//!
//! The readiness probe validates that the training orchestrator has fully initialized
//! before Kubernetes routes traffic to this instance.
use axum::{routing::get, Json, Router};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use axum::{extract::State, routing::get, Json, Router};
use serde::Serialize;
/// Shared health state for readiness probing.
///
/// The `ready` flag is set to `true` once the training orchestrator has started
/// successfully. Until then, the `/ready` endpoint returns `"not_ready"` so that
/// Kubernetes does not route traffic to an instance that cannot serve requests.
#[derive(Clone)]
pub struct HealthState {
/// Whether the service is ready to accept requests.
pub ready: Arc<AtomicBool>,
}
/// Health status response
#[derive(Serialize)]
pub struct HealthResponse {
@@ -18,13 +35,18 @@ pub struct HealthResponse {
}
/// Creates the health check router with /health and /ready endpoints
pub fn health_router() -> Router {
pub fn health_router(state: HealthState) -> Router {
Router::new()
.route("/health", get(health_check))
.route("/ready", get(readiness_check))
.with_state(state)
}
/// Liveness probe - indicates service is running
/// Liveness probe - indicates service process is running.
///
/// This intentionally does NOT check any downstream dependencies. If this
/// handler can execute, the process is alive — which is exactly what a
/// Kubernetes liveness probe should verify.
async fn health_check() -> Json<HealthResponse> {
Json(HealthResponse {
status: "healthy",
@@ -33,12 +55,18 @@ async fn health_check() -> Json<HealthResponse> {
})
}
/// Readiness probe - indicates service is ready to accept requests
async fn readiness_check() -> Json<HealthResponse> {
// In the future, can add database connection checks here
// For now, if the service is running, it's ready
/// Readiness probe - indicates service is ready to accept requests.
///
/// Returns `"ready"` only when the training orchestrator has fully initialized.
/// Before that, returns `"not_ready"` so Kubernetes will not route traffic here.
async fn readiness_check(State(state): State<HealthState>) -> Json<HealthResponse> {
let status = if state.ready.load(Ordering::Relaxed) {
"ready"
} else {
"not_ready"
};
Json(HealthResponse {
status: "ready",
status,
service: "ml_training",
version: env!("CARGO_PKG_VERSION"),
})

11
services/ml_training_service/src/main.rs
View File

@@ -6,6 +6,7 @@
#![deny(clippy::unwrap_used, clippy::expect_used)]
use std::net::SocketAddr;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use std::time::Duration;
@@ -310,6 +311,9 @@ async fn serve(args: ServeArgs) -> Result<()> {
info!("Storage backend initialized with ConfigManager integration");
// Create health state — readiness flag starts as false
let health_ready = Arc::new(AtomicBool::new(false));
// Initialize orchestrator
let mut orchestrator = TrainingOrchestrator::new(
ml_config.clone(),
@@ -326,6 +330,8 @@ async fn serve(args: ServeArgs) -> Result<()> {
.context("Failed to start orchestrator")?;
let orchestrator = Arc::new(orchestrator);
// Mark service as ready now that the orchestrator is running
health_ready.store(true, Ordering::Relaxed);
info!("Training orchestrator started");
// Initialize TLS configuration for mTLS
@@ -481,7 +487,10 @@ async fn serve(args: ServeArgs) -> Result<()> {
info!("Starting health check server on {}", health_addr);
let health_app = health::health_router();
let health_state = health::HealthState {
ready: Arc::clone(&health_ready),
};
let health_app = health::health_router(health_state);
tokio::spawn(async move {
let health_listener = match tokio::net::TcpListener::bind(health_addr).await {