8 |
9 | I originally created this as a demo for a talk I gave at GoSV in San Mateo.
10 | There's some [slides](http://go-talks.appspot.com/github.com/campoy/golang-groups/talk/talk.slide)
11 |
12 | ### Disclaimer
13 |
14 | This is not an official Google product (experimental or otherwise), it is just
15 | code that happens to be owned by Google.
16 |
17 |
--------------------------------------------------------------------------------
/dispatch.yaml:
--------------------------------------------------------------------------------
1 | # Copyright 2014 Google Inc. All rights reserved.
2 | # Licensed under the Apache License, Version 2.0 (the "License");
3 | # you may not use this file except in compliance with the License.
4 | # You may obtain a copy of the License at
5 | # http:#www.apache.org/licenses/LICENSE-2.0
6 | #
7 | # Unless required by applicable law or agreed to writing, software distributed
8 | # under the License is distributed on a "AS IS" BASIS, WITHOUT WARRANTIES OR
9 | # CONDITIONS OF ANY KIND, either express or implied.
10 | #
11 | # See the License for the specific language governing permissions and
12 | # limitations under the License.
13 |
14 | application: go-meetups
15 |
16 | dispatch:
17 | - url: "*/api/*"
18 | module: backend
19 |
20 | - url: "*/*"
21 | module: default
--------------------------------------------------------------------------------
/talk/talk.slide:
--------------------------------------------------------------------------------
1 | Building an app from scratch
2 | Go, AngularJS, App Engine, and the meetup API
3 |
4 | Francesc Campoy
5 | @francesc
6 | campoy@golang.org
7 |
8 | * Recording
9 |
10 | A recording of this talk is available on YouTube [[http://youtu.be/iXyC5-4nKfk]].
11 |
12 | * Agenda
13 |
14 | - Two slides
15 |
16 | - A bunch of code
17 |
18 | - Moar beer
19 |
20 | * What we're building
21 |
22 | .image img/screenshot.png _ 800
23 | .caption [[http://go-meetups.appspot.com/][go-meetups.appspot.com]]
24 |
25 | * What we need
26 |
27 | The code:
28 |
29 | - [[http://github.com/campoy/golang-groups][github.com/campoy/golang-groups]]
30 |
31 | The Go SDK:
32 |
33 | - [[https://cloud.google.com/sdk/][cloud.google.com/sdk]]
34 |
35 | An editor:
36 |
37 | - I use Sublime Text 3 with GoSublime
38 |
39 | * Architecture
40 |
41 | .image img/folders.png 500 _
42 |
43 | * Let's code!
--------------------------------------------------------------------------------
/backend/backend.yaml:
--------------------------------------------------------------------------------
1 | # Copyright 2014 Google Inc. All rights reserved.
2 | # Licensed under the Apache License, Version 2.0 (the "License");
3 | # you may not use this file except in compliance with the License.
4 | # You may obtain a copy of the License at
5 | # http:#www.apache.org/licenses/LICENSE-2.0
6 | #
7 | # Unless required by applicable law or agreed to writing, software distributed
8 | # under the License is distributed on a "AS IS" BASIS, WITHOUT WARRANTIES OR
9 | # CONDITIONS OF ANY KIND, either express or implied.
10 | #
11 | # See the License for the specific language governing permissions and
12 | # limitations under the License.
13 |
14 | application: go-meetups
15 | module: backend
16 | version: step7
17 | runtime: go
18 | api_version: go1
19 |
20 | handlers:
21 | - url: /.*
22 | script: _go_app
23 |
24 | env_variables:
25 | API_KEY: '' # go get yours at https://secure.meetup.com/meetup_api/key/
--------------------------------------------------------------------------------
/frontend/frontend.yaml:
--------------------------------------------------------------------------------
1 | # Copyright 2014 Google Inc. All rights reserved.
2 | # Licensed under the Apache License, Version 2.0 (the "License");
3 | # you may not use this file except in compliance with the License.
4 | # You may obtain a copy of the License at
5 | # http:#www.apache.org/licenses/LICENSE-2.0
6 | #
7 | # Unless required by applicable law or agreed to writing, software distributed
8 | # under the License is distributed on a "AS IS" BASIS, WITHOUT WARRANTIES OR
9 | # CONDITIONS OF ANY KIND, either express or implied.
10 | #
11 | # See the License for the specific language governing permissions and
12 | # limitations under the License.
13 |
14 | application: go-meetups
15 | module: default
16 | version: 1
17 | api_version: 1
18 | runtime: python27
19 | threadsafe: yes
20 |
21 | handlers:
22 | - url: /
23 | static_files: static/home.html
24 | upload: static/home.html
25 | - url: /
26 | static_dir: static
--------------------------------------------------------------------------------
/frontend/static/home.css:
--------------------------------------------------------------------------------
1 | /*
2 | Copyright 2011 The Go Authors. All rights reserved.
3 | Use of this source code is governed by a BSD-style
4 | license that can be found in the LICENSE file.
5 | */
6 |
7 | body {
8 | -webkit-font-smoothing: antialiased;
9 | width: 80%;
10 | margin: 0 auto;
11 | background: #f8f8f8;
12 | }
13 | body, input {
14 | font-family: sans-serif;
15 | font-size: 16px;
16 | color: #444;
17 | }
18 | input:focus {
19 | outline: none;
20 | }
21 | h1 {
22 | font-weight: 200;
23 | text-align: center;
24 | font-size: 3em;
25 | color: #333;
26 | border-bottom: 1px solid #e5e5e5;
27 | padding-bottom: 15px;
28 | }
29 | .row {
30 | overflow: auto;
31 | padding: 5px;
32 | }
33 | .row:first-child {
34 | background: #eee;
35 | font-weight: bolder;
36 | }
37 | .row > * {
38 | display: inline-block;
39 | float: left;
40 | width: 25%;
41 | text-align: center;
42 | border: 0;
43 | padding: 0;
44 | margin: 0;
45 | }
46 | input {
47 | text-align: center;
48 | border: none;
49 | background: #fff;
50 | width: 100%;
51 | color: #aaa;
52 | }
53 | a {
54 | text-decoration: none;
55 | color: #335;
56 | }
57 | .rounded-box, .errors p {
58 | padding: 10px;
59 | border-radius: 4px;
60 | border: 1px #ddd solid;
61 | }
62 | .errors p {
63 | background: #faa;
64 | cursor: pointer;
65 | }
66 | footer {
67 | text-align: center;
68 | font-style: italic;
69 | color: #666;
70 | padding: 40px;
71 | }
72 |
73 | #map {
74 | height: 300px;
75 | width: 100%;
76 | max-width: 600px;
77 | margin: 20px auto;
78 | }
--------------------------------------------------------------------------------
/frontend/static/home.html:
--------------------------------------------------------------------------------
1 |
6 |
7 |
8 |
9 |
10 |
11 | This is a list of all the groups in meetup.com that 26 | mention #golang as one of its topics. 27 | The list is ordered by number of members and you can apply filters to any column. 28 |
29 | 30 | 31 | 32 |{{e}}
56 |' + g.Members + ' gophers
' 102 | + 'go to page'; 103 | } -------------------------------------------------------------------------------- /backend/backend.go: -------------------------------------------------------------------------------- 1 | // Copyright 2011 The Go Authors. All rights reserved. 2 | // Use of this source code is governed by a BSD-style 3 | // license that can be found in the LICENSE file. 4 | 5 | // The backend in step 6 fetches the list of Go meetups regularly from 6 | // a meetup XML feed. 7 | package backend 8 | 9 | import ( 10 | "encoding/json" 11 | "fmt" 12 | "net/http" 13 | "os" 14 | "strings" 15 | "time" 16 | 17 | "appengine" 18 | "appengine/memcache" 19 | "appengine/urlfetch" 20 | ) 21 | 22 | var apiKey string 23 | 24 | func init() { 25 | apiKey = os.Getenv("API_KEY") 26 | if apiKey == "" { 27 | panic("missing meetup api key") 28 | } 29 | http.HandleFunc("/api/groups", getGroups) 30 | } 31 | 32 | // list of fields to fetch from the API, keep in sync with the struct below. 33 | var fields = []string{"name", "link", "members", "city", "lat", "lon", "country"} 34 | 35 | type Group struct { 36 | Name string 37 | Link string 38 | Members int 39 | City string 40 | Lat, Lon float64 41 | Country string 42 | } 43 | 44 | func getGroups(w http.ResponseWriter, r *http.Request) { 45 | c := appengine.NewContext(r) 46 | 47 | var res struct { 48 | Groups []Group `json:",omitempty"` 49 | Error string `json:",omitempty"` 50 | } 51 | 52 | gs, err := fetchAll(c, "golang", "go-programming-language") 53 | if err != nil { 54 | res.Error = err.Error() 55 | } else { 56 | res.Groups = gs 57 | } 58 | 59 | b, err := json.MarshalIndent(res, "", "\t") 60 | if err != nil { 61 | http.Error(w, "could not encode response", http.StatusInternalServerError) 62 | c.Errorf("could not encode response: %v", err) 63 | return 64 | } 65 | fmt.Fprintf(w, "%s", b) 66 | } 67 | 68 | func fetchAll(c appengine.Context, topics ...string) ([]Group, error) { 69 | var groups []Group 70 | if _, err := memcache.JSON.Get(c, "groups", &groups); err == nil { 71 | return groups, nil 72 | } 73 | 74 | const feedTmpl = "https://api.meetup.com/2/groups?sign=true&key=%s&topic=%s&only=%s" 75 | 76 | byURL := map[string]Group{} 77 | client := urlfetch.Client(c) 78 | 79 | for _, topic := range topics { 80 | next := fmt.Sprintf(feedTmpl, apiKey, topic, strings.Join(fields, ",")) 81 | for next != "" { 82 | res, err := client.Get(next) 83 | if err != nil { 84 | return nil, fmt.Errorf("could not get groups by topic ID: %v", err) 85 | } 86 | defer res.Body.Close() 87 | 88 | var data struct { 89 | Results []Group 90 | Problem string 91 | Details string 92 | Meta struct { 93 | Next string 94 | } 95 | } 96 | 97 | if err := json.NewDecoder(res.Body).Decode(&data); err != nil { 98 | return nil, fmt.Errorf("could not decode the Meetup API response: %v", err) 99 | } 100 | if data.Problem != "" || data.Details != "" { 101 | return nil, fmt.Errorf("%s %s", data.Problem, data.Details) 102 | } 103 | 104 | for _, g := range data.Results { 105 | byURL[g.Link] = g 106 | } 107 | next = data.Meta.Next 108 | } 109 | } 110 | 111 | for _, g := range byURL { 112 | groups = append(groups, g) 113 | } 114 | 115 | err := memcache.JSON.Set(c, &memcache.Item{ 116 | Key: "groups", 117 | Object: groups, 118 | Expiration: 5 * time.Minute, 119 | }) 120 | if err != nil { 121 | c.Errorf("memcache set: %v", err) 122 | } 123 | 124 | return groups, nil 125 | } 126 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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