mirror of
https://github.com/Such-Software/smirk-backend-core.git
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jwinterm
d8b6058d40
Cached crypto→fiat price feed, refreshed by a background task and served from an in-memory snapshot — no upstream call on the request path. Public and feature-flagged: when FEATURE_PRICES is off, /prices is 404 and no upstream is ever contacted. Per-feed control, as a public server needs: PRICES_ASSETS narrows which feeds an instance quotes (unset = all supported; an explicit list serves a subset; empty serves none), validated fail-closed against SUPPORTED_PRICE_ASSETS. Provider (PRICES_PROVIDER, coingecko) and currency (PRICES_CURRENCY, usd) are configurable; the refresh interval is clamped to a provider-friendly minimum. - infra/prices: PriceClient (feed whitelist → provider coin ids), bounded by the HTTP client timeout; non-finite/negative/missing quotes are skipped, not faked. A fetch failure keeps the last good snapshot. Drift guard: a test asserts the provider mapping covers exactly SUPPORTED_PRICE_ASSETS. - main: background refresh task only when enabled and at least one feed is set. - AppState.prices snapshot; handler 404s when disabled. - openapi (prices tag); unit tests + L1 test over both feature-flag states.
40 lines
1.7 KiB
Rust
40 lines
1.7 KiB
Rust
//! L1 integration: the public prices endpoint, both feature-flag states.
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//!
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//! Drives `FEATURE_PRICES` explicitly and rebuilds the app for each state, so
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//! both paths are deterministic without any network call. (The background
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//! refresh task lives in `main`, not `build_router`, so under the harness the
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//! enabled feed simply serves an empty, not-yet-populated snapshot.) The live
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//! upstream fetch is covered by `infra::prices` unit tests and is an L3 concern.
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mod common;
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use axum::http::StatusCode;
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#[tokio::test]
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async fn prices_endpoint_respects_the_feature_flag() {
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// Disabled → 404, so a client reading /capabilities never special-cases it.
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std::env::set_var("FEATURE_PRICES", "false");
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let Some(app) = common::try_app().await else {
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return;
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};
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let (status, body) = app.request("GET", "/api/v1/prices", None, None).await;
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assert_eq!(status, StatusCode::NOT_FOUND);
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assert_eq!(body["code"], "NOT_FOUND");
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// Enabled → 200 with the documented shape. No background task in the harness,
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// so prices are empty and updated_at is null until the first refresh.
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std::env::set_var("FEATURE_PRICES", "true");
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std::env::set_var("PRICES_ASSETS", "btc,xmr");
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let app = common::try_app()
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.await
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.expect("app builds with prices enabled");
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let (status, body) = app.request("GET", "/api/v1/prices", None, None).await;
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assert_eq!(status, StatusCode::OK);
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assert!(body["currency"].as_str().is_some(), "currency present");
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assert!(body["prices"].is_object(), "prices is a map");
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assert!(body["updated_at"].is_null(), "not yet refreshed");
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std::env::remove_var("FEATURE_PRICES");
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std::env::remove_var("PRICES_ASSETS");
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}
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