├── run.sh
├── .gitignore
├── Makefile
├── README.md
└── web.go


/run.sh:
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1 | LD_LIBRARY_PATH=./leveldb-1.7.0 ./boomerang60 
2 | 


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/.gitignore:
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1 | slugs.leveldb/
2 | pkg/
3 | src/
4 | boomerang60
5 | 


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/Makefile:
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 1 | export GOPATH=$(CURDIR)
 2 | 
 3 | all: src/github.com/stretchr/goweb src/github.com/jmhodges/levigo boomerang
 4 | 
 5 | boomerang: web.go
 6 | 	@echo building in $$GOPATH
 7 | 	go build
 8 | 
 9 | src/github.com/stretchr/goweb:
10 | 	go get github.com/stretchr/goweb
11 | 
12 | src/github.com/jmhodges/levigo:
13 | 	go get github.com/jmhodges/levigo
14 | 


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/README.md:
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 1 | A simple URL shortener/redirect.
 2 | 
 3 | To create a new redirect, do an HTTP POST to the slug or short-name that 
 4 | you'd like to use in the future. Put the destination URL in the body of the POST.
 5 | 
 6 | ```
 7 | POST /<slug>
 8 | <url>
 9 | ```
10 | 
11 | Then use the slug normally, http://my_server/slug will redirect to the associated URL.
12 | 
13 | ```
14 | GET /<slug>
15 | ```
16 | 


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/web.go:
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 1 | package main
 2 | 
 3 | import (
 4 |   "fmt"
 5 |   "bufio"
 6 |   "net/http"
 7 |   "github.com/stretchr/goweb"
 8 |   "github.com/stretchr/goweb/context"
 9 |   "github.com/jmhodges/levigo"
10 | )
11 | 
12 | func main() {
13 | 
14 |   opts := levigo.NewOptions()
15 |   opts.SetCreateIfMissing(true)
16 |   ro := levigo.NewReadOptions()
17 |   wo := levigo.NewWriteOptions()
18 | 
19 |   db, err := levigo.Open("slugs.leveldb", opts)
20 |   if err != nil { fmt.Printf("db %v\n", err) }
21 | 
22 |   goweb.Map("GET", "/{slug}", func(c context.Context) error {
23 |     key := c.PathValue("slug")
24 |     fmt.Printf("GET %s\n", key)
25 |     data, err := db.Get(ro, []byte(key))
26 |     if err == nil {
27 |       responseCode := 0
28 |       responseBytes := []byte("")
29 |       if data == nil {
30 |         responseBytes = []byte("Not found")
31 |         responseCode = 404
32 |       } else {
33 |         c.HttpResponseWriter().Header().Set("Location", string(data))
34 |         responseBytes = data
35 |         responseCode = 307
36 |       }
37 |       return goweb.Respond.With(c, responseCode, responseBytes)
38 |     } else {
39 |       return goweb.Respond.With(c, http.StatusInternalServerError, nil)
40 |     }
41 |   })
42 | 
43 |   goweb.Map("POST", "/{slug}", func(c context.Context) error {
44 |     key := c.PathValue("slug")
45 | 
46 |     bodyio := bufio.NewReader(c.HttpRequest().Body)
47 |     body, err := bodyio.ReadString('\n')
48 |     if err == nil {
49 |       fmt.Printf("POST %s %s\n", key, body)
50 |       err = db.Put(wo, []byte(key), []byte(body))
51 |       fmt.Printf("POST2 %s %s\n", key, body)
52 |       if err == nil {
53 |         fmt.Printf("POST db good\n")
54 |         return goweb.Respond.With(c, 200, nil)
55 |       } else {
56 |         fmt.Printf("POST db %s %v\n", key, err)
57 |         return goweb.Respond.With(c, http.StatusInternalServerError, nil)
58 |       }
59 |     } else {
60 |       fmt.Printf("POST body err %v\n", key, err)
61 |       return goweb.Respond.With(c, http.StatusInternalServerError, nil)
62 |     }
63 |   })
64 | 
65 |   addr := ":8080"
66 |   fmt.Printf("ready %s\n", addr)
67 |   s := &http.Server{Addr: addr, Handler: goweb.DefaultHttpHandler()}
68 |   s.ListenAndServe()
69 |   fmt.Println("bye bye")
70 | }
71 | 


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