ducky/subscriptions

Paddy 2015-07-13 Parent:9e138933e4ce Child:8eb19bcbf17d

8:61583c1d3886 Go to Latest

ducky/subscriptions/client/client.go

Create a listener that will create subscriptions. We need a listener (as discussed in c4cfceb2f2fb) that will create a Subscription whenever an auth.Profile is created. This is the beginning of that effort. It hasn't been tested, and all the pieces aren't in place, but it's a rough skeleton. We have a Dockerfile that will correctly build a minimal container for the listener. We have a build-docker.sh script that will correctly build a binary that will be used in the Dockerfile. We have a ca-certificates.crt, which are pulled from Ubuntu, and are necessary before we can safely consume SSL endpoints. We created a small consumer script that listens for events off NSQ, and calls the appropriate endpoint for our Subscriptions API. This is untested, and it doesn't build at the moment, but that's awaiting changes in the code.secondbit.org/auth.hg package. Finally, we have a wrapper.sh file that will expose the Stripe secret key being used from a Kubernetes secret file as an environment variable, instead.

Download raw file
View source Diff to previous Annotate
History
1 package client
2
3 import (
4 "bytes"
5 "encoding/json"
6 "errors"
7 "io"
8 "net/http"
9 "strings"
10 "time"
11
12 "code.secondbit.org/uuid.hg"
13
14 "code.secondbit.org/ducky/subscriptions.hg/api"
15 )
16
17 var (
18 ErrNilClient = errors.New("nil client wrapper")
19 ErrNilHTTPClient = errors.New("nil client")
20 )
21
22 type Client struct {
23 client *http.Client
24 address string
25 ID uuid.ID
26 }
27
28 func New(address string, id uuid.ID) *Client {
29 address = strings.TrimRight(address, "/")
30 return &Client{
31 address: address,
32 client: &http.Client{},
33 ID: id,
34 }
35 }
36
37 func (c *Client) do(method, url string, request interface{}, scopes []string, subject uuid.ID) (api.Response, error) {
38 if c == nil {
39 return api.Response{}, ErrNilClient
40 }
41 if c.client == nil {
42 return api.Response{}, ErrNilHTTPClient
43 }
44 var response api.Response
45 if !strings.HasPrefix(url, "http") {
46 url = strings.TrimLeft(url, "/")
47 url = "/" + url
48 url = c.address + url
49 }
50 var body io.Reader
51 if request != nil {
52 data, err := json.Marshal(request)
53 if err != nil {
54 return response, err
55 }
56 body = bytes.NewBuffer(data)
57 }
58 req, err := http.NewRequest(method, url, body)
59 if err != nil {
60 return response, err
61 }
62 req.Header.Set("Ducky-Scope", strings.Join(scopes, " "))
63 req.Header.Set("Ducky-Issuer", c.ID.String())
64 if subject != nil {
65 req.Header.Set("Ducky-Subject", subject.String())
66 }
67 req.Header.Set("Ducky-Expires", time.Now().Add(time.Hour).String())
68 req.Header.Set("Ducky-Issued-At", time.Now().String())
69 req.Header.Set("Ducky-Not-Before", time.Now().Add(-5*time.Minute).String())
70 resp, err := c.client.Do(req)
71 if err != nil {
72 return response, err
73 }
74 defer resp.Body.Close()
75 switch resp.Header.Get("Content-Type") {
76 case "application/json":
77 dec := json.NewDecoder(resp.Body)
78 err = dec.Decode(&response)
79 if err != nil {
80 return response, err
81 }
82 default:
83 dec := json.NewDecoder(resp.Body)
84 err = dec.Decode(&response)
85 if err != nil {
86 return response, err
87 }
88 }
89 return response, nil
90 }
91
92 func (c *Client) Get(url string, scopes []string, subject uuid.ID) (api.Response, error) {
93 return c.do("GET", url, nil, scopes, subject)
94 }
95
96 func (c *Client) Post(url string, request interface{}, scopes []string, subject uuid.ID) (api.Response, error) {
97 return c.do("POST", url, request, scopes, subject)
98 }
99
100 func (c *Client) Patch(url string, request interface{}, scopes []string, subject uuid.ID) (api.Response, error) {
101 return c.do("PATCH", url, request, scopes, subject)
102 }