// ServeHTTP implements the http.Handler interface.
func (h *Background) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ctx := h.Generate
if ctx == nil {
ctx = DefaultGenerator
}
h.ServeHTTPContext(httpx.WithRequest(ctx(), r), w, r)
}
// WithRequest adds information about the http.Request to reported errors.
func WithRequest(h httpx.Handler) httpx.Handler {
return httpx.HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) error {
ctx = httpx.WithRequest(ctx, r)
// Add the request to the context.
reporter.AddRequest(ctx, r)
// Add the request id
reporter.AddContext(ctx, "request_id", httpx.RequestID(ctx))
return h.ServeHTTPContext(ctx, w, r)
})
}
func TestRecovery(t *testing.T) {
var (
called bool
errBoom = errors.New("boom")
)
h := &Recovery{
Reporter: reporter.ReporterFunc(func(ctx context.Context, err error) error {
called = true
e := err.(*reporter.Error)
if e.Err != errBoom {
t.Fatalf("err => %v; want %v", err, errBoom)
}
if got, want := e.Context["request_id"], "1234"; got != want {
t.Fatalf("RequestID => %s; want %s", got, want)
}
return nil
}),
handler: httpx.HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) error {
panic(errBoom)
}),
}
ctx := context.Background()
req, _ := http.NewRequest("GET", "/", nil)
req.Header.Set("X-Request-ID", "1234")
resp := httptest.NewRecorder()
ctx = httpx.WithRequest(ctx, req)
defer func() {
if err := recover(); err != nil {
t.Fatal("Expected the panic to be handled.")
}
}()
err := h.ServeHTTPContext(ctx, resp, req)
if err != errBoom {
t.Fatalf("err => %v; want %v", err, errBoom)
}
}