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fix: prevent stale mutation execution

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udo
2026-07-13 20:17:48 +00:00
parent 0187bb60cf
commit 92baaa6299
7 changed files with 140 additions and 15 deletions
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src/linux_fastcgi.cpp
+23 -2
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@@ -575,6 +575,17 @@ int handle_complete(FastCGIRequest& request) {
};
String entry_unit = compiler_normalize_unit_path(&request, request.params["SCRIPT_FILENAME"]);
String request_method = to_upper(trim(request.params["REQUEST_METHOD"]));
bool read_request = request_method == "GET" || request_method == "HEAD" || request_method == "OPTIONS";
bool stale_mutation = !request.resources.is_cli && !read_request && compiler_unit_needs_recompile(&request, entry_unit);
if(stale_mutation)
{
compiler_prioritize_unit(&request, entry_unit);
request.set_status(503, "Service Unavailable");
request.header["Content-Type"] = "text/plain; charset=utf-8";
request.header["Retry-After"] = "1";
print("The requested code is being updated. Retry this request shortly.\n");
}
// W7e: every unit runs on wasm. When the artifact is missing or stale
// (cold worker, or source edited since the last compile), compile the
// unit on demand — get_shared_unit() builds the .wasm side-module — and
@@ -593,7 +604,11 @@ int handle_complete(FastCGIRequest& request) {
failure_trace = "source: " + request.params["SCRIPT_FILENAME"];
};
if(request.params["UCE_WS"] == "1")
if(stale_mutation)
{
// The response above deliberately bypasses all stale application code.
}
else if(request.params["UCE_WS"] == "1")
{
// A WS message the broker forwarded here: rebuild the connection
// context the broker passed as params, then run __uce_websocket.
@@ -1243,7 +1258,13 @@ void run_proactive_compiler()
{
try
{
if(compile_queue.size() == 0 && time_precise() >= next_scan_at)
auto priority_units = compiler_take_priority_units(&background_context);
for(auto it = priority_units.rbegin(); it != priority_units.rend(); ++it)
{
compile_queue.erase(std::remove(compile_queue.begin(), compile_queue.end(), *it), compile_queue.end());
compile_queue.insert(compile_queue.begin(), *it);
}
if(compile_queue.size() == 0 && time_precise() >= next_scan_at)
{
auto tracked_units = compiler_list_known_units(&background_context);
StringList existing_units;