77e37cb21b
- backend/embed.go: package assets with //go:embed all:static and //go:embed migrations - backend/internal/db/migrate.go: RunMigrations using pgx/v5/stdlib bridge to goose.Up() - backend/internal/web/handlers.go: HealthzHandler() no-arg liveness + ReadyzHandler(pinger) readiness - backend/internal/web/handlers_test.go: TestHealthz_OK (no pinger), TestReadyz_OK, TestReadyz_Down added; TestHealthz_Down deleted
58 lines
1.8 KiB
Go
58 lines
1.8 KiB
Go
package web
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import (
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"context"
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"encoding/json"
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"net/http"
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"time"
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"backend/templates"
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)
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// HealthzHandler returns a pure liveness probe handler (D-12). It responds
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// immediately with 200 + `{"status":"ok"}` and never contacts the database.
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// Use /readyz for a DB-aware readiness probe.
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func HealthzHandler() http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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_ = json.NewEncoder(w).Encode(map[string]string{
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"status": "ok",
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})
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}
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}
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// ReadyzHandler returns an HTTP handler that probes the supplied Pinger with a
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// 2-second timeout and responds per CONTEXT D-13: 200 + JSON
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// `{"status":"ok","db":"ok"}` when reachable, 503 + JSON
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// `{"status":"degraded","db":"down"}` otherwise.
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func ReadyzHandler(pinger Pinger) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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ctx, cancel := context.WithTimeout(r.Context(), 2*time.Second)
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defer cancel()
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w.Header().Set("Content-Type", "application/json")
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if err := pinger.Ping(ctx); err != nil {
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w.WriteHeader(http.StatusServiceUnavailable)
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_ = json.NewEncoder(w).Encode(map[string]string{
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"status": "degraded",
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"db": "down",
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})
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return
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}
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w.WriteHeader(http.StatusOK)
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_ = json.NewEncoder(w).Encode(map[string]string{
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"status": "ok",
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"db": "ok",
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})
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}
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}
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// DemoTimeHandler renders the HTMX fragment for /demo/time. The `now` clock
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// is injected so tests can substitute a deterministic time source; production
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// passes time.Now.
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func DemoTimeHandler(now func() time.Time) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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_ = templates.TimeFragment(now()).Render(r.Context(), w)
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}
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}
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