// NewProviderGroup makes a provider group. Requires a session namespace (will
// be prepended to ":"+provider_name), the base URL of the ProviderGroup's
// http.Handler, a collection of URLs for redirecting, and a list of specific
// configured providers.
func NewProviderGroup(session_namespace string, group_base_url string,
urls RedirectURLs, providers ...*Provider) (*ProviderGroup, error) {
group_base_url = strings.TrimRight(group_base_url, "/")
g := &ProviderGroup{
handlers: make(map[string]*ProviderHandler, len(providers)),
urls: urls,
group_base_url: group_base_url}
g.mux = webhelp.DirMux{
"all": webhelp.DirMux{"logout": webhelp.Exact(
webhelp.HandlerFunc(g.logoutAll))},
}
for _, provider := range providers {
if provider.Name == "" {
return nil, fmt.Errorf("empty provider name")
}
_, exists := g.handlers[provider.Name]
if exists {
return nil, fmt.Errorf("two providers given with name %#v",
provider.Name)
}
handler := NewProviderHandler(provider,
fmt.Sprintf("%s-%s", session_namespace, provider.Name),
fmt.Sprintf("%s/%s", group_base_url, provider.Name), urls)
g.handlers[provider.Name] = handler
g.mux[provider.Name] = handler
}
return g, nil
}
// NewProviderHandler makes a provider handler. Requires a provider
// configuration, a session namespace, a base URL for the handler, and a
// collection of URLs for redirecting.
func NewProviderHandler(provider *Provider, session_namespace string,
handler_base_url string, urls RedirectURLs) *ProviderHandler {
if urls.DefaultLoginURL == "" {
urls.DefaultLoginURL = "/"
}
if urls.DefaultLogoutURL == "" {
urls.DefaultLogoutURL = "/"
}
h := &ProviderHandler{
provider: provider,
session_namespace: session_namespace,
handler_base_url: strings.TrimRight(handler_base_url, "/"),
urls: urls}
h.DirMux = webhelp.DirMux{
"login": webhelp.Exact(webhelp.HandlerFunc(h.login)),
"logout": webhelp.Exact(webhelp.HandlerFunc(h.logout)),
"_cb": webhelp.Exact(webhelp.HandlerFunc(h.cb))}
return h
}
func ExampleArgMux(t *testing.T) {
pageName := webhelp.NewArgMux()
handler := webhelp.DirMux{
"wiki": pageName.Shift(webhelp.Exact(webhelp.HandlerFunc(
func(ctx context.Context, w webhelp.ResponseWriter, r *http.Request) error {
name := pageName.Get(ctx)
w.Header().Set("Content-Type", "text/plain")
fmt.Fprintf(w, "Welcome to %s", name)
return nil
})))}
webhelp.ListenAndServe(":0", handler)
}
func main() {
flag.Parse()
loadOAuth2()
secret, err := hex.DecodeString(*cookieSecret)
if err != nil {
panic(err)
}
renderer, err := NewRenderer()
if err != nil {
panic(err)
}
data, err := NewData()
if err != nil {
panic(err)
}
defer data.Close()
endpoints := NewEndpoints(data)
routes := webhelp.LoggingHandler(
sessions.HandlerWithStore(sessions.NewCookieStore(secret),
webhelp.OverlayMux{
Fallback: endpoints.LoginRequired(webhelp.DirMux{
"": webhelp.Exact(renderer.Render(endpoints.ProjectList)),
"project": projectId.OptShift(
webhelp.ExactPath(webhelp.MethodMux{
"GET": webhelp.RedirectHandler("/"),
"POST": renderer.Process(endpoints.NewProject),
}),
webhelp.DirMux{
"": webhelp.Exact(renderer.Render(endpoints.Project)),
"sample": sampleId.OptShift(
webhelp.ExactPath(webhelp.MethodMux{
"GET": ProjectRedirector,
}),
webhelp.DirMux{
"": webhelp.ExactGet(renderer.Render(endpoints.Sample)),
"similar": webhelp.ExactGet(
renderer.Render(endpoints.SampleSimilar)),
},
),
"control": controlId.OptShift(
webhelp.ExactPath(webhelp.MethodMux{
"GET": ProjectRedirector,
"POST": renderer.Process(endpoints.NewControl),
}),
webhelp.DirMux{
"": webhelp.Exact(renderer.Render(endpoints.Control)),
"sample": webhelp.ExactPath(webhelp.ExactMethod("POST",
renderer.Process(endpoints.NewSample))),
},
),
"control_named": controlName.OptShift(
webhelp.ExactGet(ProjectRedirector),
webhelp.DirMux{
"sample": webhelp.ExactPath(webhelp.ExactMethod("POST",
renderer.Process(endpoints.NewSampleFromName))),
}),
"search": webhelp.ExactMethod("POST",
webhelp.ExactPath(renderer.Render(endpoints.Search)),
),
},
),
"account": webhelp.DirMux{
"apikeys": webhelp.ExactPath(webhelp.MethodMux{
"GET": renderer.Render(endpoints.APIKeys),
"POST": renderer.Process(endpoints.NewAPIKey),
}),
},
}),
Overlay: webhelp.DirMux{
"auth": oauth2,
}}))
switch flag.Arg(0) {
case "createdb":
err := data.CreateDB()
if err != nil {
panic(err)
}
case "serve":
panic(webhelp.ListenAndServe(*listenAddr, routes))
case "routes":
webhelp.PrintRoutes(os.Stdout, routes)
default:
fmt.Printf("Usage: %s <serve|createdb|routes>\n", os.Args[0])
}
}