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serve the embedded frontend alongside the API, slice 1 of M4

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//go:embed needs internal/webdist/dist to exist at compile time, so a
one-line placeholder index.html is committed there and the real build
(Docker, or a manual copy of web/dist) overwrites it. One mux serves
/, /api, and a /healthz for the compose healthcheck to come.
This commit is contained in:
Justin Visser 2026-06-11 14:02:38 +02:00
parent bbba450c6e
commit 3684488d75
4 changed files with 58 additions and 5 deletions
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21
cmd/spreadlab/main.go
View file

@ -1,6 +1,7 @@
// Command spreadlab serves the spreadlab API (and, from milestone 4, the
// dashboard itself). The -table flag instead prints the three-scenario
// comparison and exits, a quick engine sanity check.
// Command spreadlab serves the dashboard and its API from one binary:
// the embedded frontend on /, the API under /api, and a trivial
// /healthz for container healthchecks. The -table flag instead prints
// the three-scenario comparison and exits, a quick engine sanity check.
package main
import (
@ -14,6 +15,7 @@ import (
"github.com/JustinZeus/spreadlab/internal/api"
"github.com/JustinZeus/spreadlab/internal/engine"
"github.com/JustinZeus/spreadlab/internal/webdist"
)
func main() {
@ -29,8 +31,17 @@ func main() {
return
}
log.Printf("spreadlab API listening on http://%s", *addr)
if err := http.ListenAndServe(*addr, api.NewServer()); err != nil {
// One mux, one origin: the longer /api/ pattern wins over / for API
// calls, everything else falls through to the embedded frontend.
mux := http.NewServeMux()
mux.Handle("/api/", api.NewServer())
mux.HandleFunc("GET /healthz", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusNoContent)
})
mux.Handle("/", webdist.Handler())
log.Printf("spreadlab listening on http://%s", *addr)
if err := http.ListenAndServe(*addr, mux); err != nil {
log.Fatal(err)
}
}