auth
auth/request.go
Implement a session store in postgres. Write the postgres implementation of our sessionStore type. Write the SQL statements to initialize the database for us. Include the postgres implementation of our sessionStore type in our sessionStore tests when the appropriate environment variable is passed.
1 package auth
3 import (
4 "encoding/json"
5 "log"
6 "net/http"
8 "bitbucket.org/ww/goautoneg"
9 )
11 const (
12 requestErrAccessDenied = "access_denied"
13 requestErrInsufficient = "insufficient"
14 requestErrOverflow = "overflow"
15 requestErrInvalidValue = "invalid_value"
16 requestErrInvalidFormat = "invalid_format"
17 requestErrMissing = "missing"
18 requestErrNotFound = "not_found"
19 requestErrConflict = "conflict"
20 requestErrActOfGod = "act_of_god"
21 )
23 var (
24 actOfGodResponse = response{Errors: []requestError{requestError{Slug: requestErrActOfGod}}}
25 invalidFormatResponse = response{Errors: []requestError{requestError{Slug: requestErrInvalidFormat, Field: "/"}}}
27 encoders = []string{"application/json"}
28 )
30 type response struct {
31 Errors []requestError `json:"errors,omitempty"`
32 Logins []Login `json:"logins,omitempty"`
33 Profiles []Profile `json:"profiles,omitempty"`
34 Clients []Client `json:"clients,omitempty"`
35 Endpoints []Endpoint `json:"endpoints,omitempty"`
36 }
38 type requestError struct {
39 Slug string `json:"error,omitempty"`
40 Field string `json:"field,omitempty"`
41 Param string `json:"param,omitempty"`
42 Header string `json:"header,omitempty"`
43 }
45 func negotiate(h http.Handler) http.Handler {
46 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
47 if r.Header.Get("Accept") != "" {
48 contentType := goautoneg.Negotiate(r.Header.Get("Accept"), encoders)
49 if contentType == "" {
50 w.WriteHeader(http.StatusNotAcceptable)
51 w.Write([]byte("Unsupported content type requested: " + r.Header.Get("Accept")))
52 return
53 }
54 }
55 h.ServeHTTP(w, r)
56 })
57 }
59 func encode(w http.ResponseWriter, r *http.Request, status int, resp response) {
60 contentType := goautoneg.Negotiate(r.Header.Get("Accept"), encoders)
61 w.Header().Set("content-type", contentType)
62 w.WriteHeader(status)
63 var err error
64 switch contentType {
65 case "application/json":
66 enc := json.NewEncoder(w)
67 err = enc.Encode(resp)
68 default:
69 enc := json.NewEncoder(w)
70 err = enc.Encode(resp)
71 }
72 if err != nil {
73 log.Println(err)
74 }
75 }
77 func decode(r *http.Request, target interface{}) error {
78 defer r.Body.Close()
79 switch r.Header.Get("Content-Type") {
80 case "application/json":
81 dec := json.NewDecoder(r.Body)
82 return dec.Decode(target)
83 default:
84 dec := json.NewDecoder(r.Body)
85 return dec.Decode(target)
86 }
87 }
89 func wrap(context Context, f func(w http.ResponseWriter, r *http.Request, context Context)) http.Handler {
90 return negotiate(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
91 f(w, r, context)
92 }))
93 }