postrust_worker/lib.rs
1//! Postrust Cloudflare Workers adapter.
2//!
3//! Deploys Postrust as a Cloudflare Worker.
4//!
5//! **This is a stub.** The fetch handler answers with a JSON body saying so;
6//! it does not parse requests, reach a database, or return data. A real
7//! implementation needs Cloudflare-specific pieces that are not here yet:
8//! Hyperdrive for database connections, and KV or Durable Objects for the
9//! schema cache.
10//!
11//! Because of that the crate is on its own 0.x version line rather than the
12//! workspace's, and carries no stability promise. See docs/stability.md.
13
14use worker::*;
15
16#[event(fetch)]
17async fn main(req: Request, env: Env, _ctx: Context) -> Result<Response> {
18 // Log request
19 console_log!("{} {}", req.method().to_string(), req.path());
20
21 // Get configuration from environment
22 let _db_url = env.var("DATABASE_URL").map(|v| v.to_string()).ok();
23 let _jwt_secret = env.secret("JWT_SECRET").map(|v| v.to_string()).ok();
24 let _schemas = env
25 .var("PGRST_DB_SCHEMAS")
26 .map(|v| v.to_string())
27 .unwrap_or_else(|_| "public".to_string());
28
29 // For now, return a placeholder response
30 // Full implementation would:
31 // 1. Use Hyperdrive for database connections
32 // 2. Cache schema in KV or Durable Objects
33 // 3. Process requests using postrust-core
34
35 let response_body = serde_json::json!({
36 "message": "Postrust Worker is running",
37 "status": "stub",
38 "note": "Full implementation requires Hyperdrive configuration"
39 });
40
41 Response::from_json(&response_body)
42}
43
44/// Process a request using Postrust core.
45///
46/// This is a placeholder for the full implementation.
47#[allow(dead_code)]
48async fn process_request(_req: Request, _env: &Env) -> Result<Response> {
49 // In a full implementation:
50 // 1. Get Hyperdrive binding: env.hyperdrive("DB")?
51 // 2. Parse request using postrust-core
52 // 3. Execute query
53 // 4. Format response
54
55 Response::error("Not implemented", 501)
56}
57
58/// Get or load schema cache from KV.
59#[allow(dead_code)]
60async fn get_schema_cache(_env: &Env) -> Result<Option<String>> {
61 // In a full implementation:
62 // 1. Check KV for cached schema
63 // 2. If not found, load from database
64 // 3. Cache in KV with TTL
65
66 Ok(None)
67}