func read(w http.ResponseWriter, r *http.Request) {
id, ok := x.ParseIdFromUrl(r, "/read/")
if !ok {
return
}
// API usage to read data.
q := api.NewQuery("hack", id).UptoDepth(10)
result, err := q.Run(c)
if err != nil {
x.SetStatus(w, x.E_ERROR, err.Error())
return
}
result.WriteJsonResponse(w)
}
func printAndGetUser(uid string) (user User) {
result, err := api.NewQuery("User", uid).UptoDepth(10).Run(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
js, err := result.ToJson()
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Printf("\n%s\n%s\n%s\n", sep, string(js), sep)
if err := json.Unmarshal(js, &user); err != nil || len(user.Post) == 0 {
log.Fatalf("Error: %v", err)
}
return user
}
func main() {
rand.Seed(time.Now().UnixNano())
fmt.Println("Running...")
ctx = new(req.Context)
l := new(store.Leveldb)
l.SetBloomFilter(13)
ctx.Store = l
ctx.Store.Init("leveldb", "test")
e := echo.New()
e.SetDebug(true)
e.Use(mw.Recover())
e.Static("/assets/", "public/assets")
e.Get("/webms/:name", func(c *echo.Context) error {
resp := c.Response()
name := c.Param("name")
resp.Header().Add("Content-Type", "video/webm")
http.ServeFile(resp, c.Request(), "webms/"+name)
return nil
})
e.Static("/webms/", "webms")
//e.ServeFile("/", "public/index.html")
e.Get("/", func(c *echo.Context) error {
http.ServeFile(c.Response(), c.Request(), "public/index.html")
return nil
})
e.ServeFile("/upload", "public/upload.html")
e.Post("/upload", func(c *echo.Context) error {
req := c.Request()
name := req.FormValue("name")
ttags := req.FormValue("tags")
tags := strings.Split(ttags, " ")
path := x.UniqueString(10)
// Read files
file := req.MultipartForm.File["file"]
src, err := file[0].Open()
if err != nil {
return err
}
defer src.Close()
// Destination file
dst, err := os.Create("webms/" + path + ".webm")
if err != nil {
return err
}
defer dst.Close()
if _, err = io.Copy(dst, src); err != nil {
return err
}
if err = api.Get("WebmCont", rootid).SetSource(rootid).AddChild("Webm").Set("path", path).
Set("tags", tags).Set("name", name).Execute(ctx); err != nil {
return err
}
return c.String(http.StatusOK, "eyo uploaded file")
})
e.Get("/webm", func(c *echo.Context) error {
result, err := api.NewQuery("WebmCont", rootid).Collect("Webm").Run(ctx)
if err != nil {
return err
}
by, err := result.ToJson()
if err != nil {
return err
}
return c.String(200, string(by))
})
e.Get("/webm/filter/:filter", func(c *echo.Context) error {
tags := strings.Split(c.Param("filter"), "+")
result, err := api.NewQuery("WebmCont", rootid).Collect("Webm").Run(ctx)
if err != nil {
return err
}
by, err := filter(result, tags...)
if err != nil {
return err
}
return c.String(200, string(by))
})
e.Get("/webm/:id", func(c *echo.Context) error {
result, err := api.NewQuery("Webm", c.Param("id")).Run(ctx)
if err != nil {
return err
}
by, err := result.ToJson()
if err != nil {
return err
}
return c.String(200, string(by))
})
e.Get("/webm/:id/tag/:tag", func(c *echo.Context) error {
result, err := api.NewQuery("Webm", c.Param("id")).Run(ctx)
if err != nil {
return err
}
var tags []interface{}
tagb, ok := result.Columns["tags"].Value.([]interface{})
if ok {
tags = tagb
}
cont := contains(tags, c.Param("tag"))
var atags []string
var resp string
if cont {
resp = "removed"
atags = convertButLeave(tags, c.Param("tag"))
} else {
resp = "added"
atags = convert(tags)
atags = append(atags, c.Param("tag"))
}
err = api.Get("Webm", c.Param("id")).SetSource(rootid).Set("tags", atags).Execute(ctx)
if err != nil {
return err
}
return c.String(200, resp)
})
graceful.ListenAndServe(e.Server(":8080"), 5*time.Second)
}
func main() {
rand.Seed(time.Now().UnixNano())
fmt.Println("Running...")
flag.Parse()
c = new(req.Context)
if *storeType == "leveldb" {
l := new(store.Leveldb)
l.SetBloomFilter(13)
c.Store = l
c.Store.Init(*storeType, "/tmp/ldb_"+x.UniqueString(10))
} else if *storeType == "cass" {
cluster := gocql.NewCluster("192.168.59.103")
cluster.Keyspace = "crudtest"
cluster.Consistency = gocql.Quorum
cass := new(store.Cassandra)
if session, err := cluster.CreateSession(); err != nil {
panic(err)
} else {
cass.SetSession(session)
}
c.Store = cass
c.Store.Init(*storeType, "instructions")
} else if *storeType == "mysql" {
db, err := sql.Open("mysql", "root@tcp(127.0.0.1:3306)/test")
if err != nil {
panic(err)
}
if err = db.Ping(); err != nil {
panic(err)
}
log.Info("Connection to mysql successful")
sqldb := new(store.Sql)
sqldb.SetDb(db)
c.Store = sqldb
c.Store.Init(*storeType, "instructions")
} else if *storeType == "postgres" {
db, err := sql.Open("postgres", "postgres://localhost/test?sslmode=disable")
if err != nil {
panic(err)
}
if err = db.Ping(); err != nil {
panic(err)
}
log.Info("Connection to postgres successful")
sqldb := new(store.Sql)
sqldb.SetDb(db)
c.Store = sqldb
c.Store.Init(*storeType, "instructions")
} else if *storeType == "rethinkdb" {
session, err := r.Connect(r.ConnectOpts{
// Address: "192.168.59.103:28015",
Address: "localhost:28015",
Database: "crudtest",
})
if err != nil {
panic(err)
}
rethinkdb := new(store.RethinkDB)
rethinkdb.SetSession(session)
c.Store = rethinkdb
c.Store.Init(*storeType, "instructions")
} else if *storeType == "mongodb" {
// "192.168.59.103:27017"
session, err := mgo.Dial("localhost:27017")
if err != nil {
panic(err)
}
session.SetMode(mgo.Monotonic, true)
mongodb := new(store.MongoDB)
mongodb.SetSession(session, "crudtest")
c.Store = mongodb
c.Store.Init(*storeType, "instructions")
} else if *storeType == "datastore" {
c.TablePrefix = "Test-"
c.Store = new(store.Datastore)
c.Store.Init(*storeType, "gce-project-id")
} else {
panic("Invalid store")
}
var err error
uid := newUser()
// Let's get started. User 'uid' creates a new Post.
// This Post shares a url, adds some text and some tags.
tags := [3]string{"search", "cat", "videos"}
err = api.Get("User", uid).SetSource(uid).AddChild("Post").
Set("url", "www.google.com").Set("body", "You can search for cat videos here").
Set("tags", tags).Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Print("Stored Post")
// Now let's add a comment and two likes to our new post.
// One user would add a comment and one like. Another user would
// just like the post.
//
// It's best to have the same 'source' for one set of operations.
// In REST APIs, this is how things would always be. Each REST call
// is from one user (and never two different users).
// This way the creation of like "entity", and the properties
// of that new like entity have the same source.
//
// So, here's Step 1: A new user would add a comment, and like the post.
user := printAndGetUser(uid)
post := user.Post[0]
p := api.Get("Post", post.Id).SetSource(newUser())
p.AddChild("Like").Set("thumb", 1)
p.AddChild("Comment").Set("body",
fmt.Sprintf("Comment %s on the post", x.UniqueString(2)))
err = p.Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
// Step 2: Another user would now like the post.
p = api.Get("Post", post.Id).SetSource(newUser())
p.AddChild("Like").Set("thumb", 1)
err = p.Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Print("Added 1 Comment and 2 Like on Post")
user = printAndGetUser(uid)
post = user.Post[0]
if len(post.Comment) == 0 {
log.Fatalf("No comment found: %+v", post)
}
comment := post.Comment[0]
// Now another user likes and replies to the comment that was added above.
// So, it's a comment within a comment.
p = api.Get("Comment", comment.Id).SetSource(newUser())
p.AddChild("Like").Set("thumb", 1)
p.AddChild("Comment").Set("body",
fmt.Sprintf("Comment %s on comment", x.UniqueString(2)))
err = p.Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Print("Added Comment on Comment")
user = printAndGetUser(uid)
post = user.Post[0]
if len(post.Comment) == 0 {
log.Fatalf("No comment found: %+v", post)
}
comment = post.Comment[0]
if len(comment.Like) == 0 {
log.Fatalf("No like found: %+v", comment)
}
like := comment.Like[0]
// So far we have this structure:
// User
// L Post
// L 2 * Like
// L Comment
// L Comment
// L Like
// This is what most social platforms do. But, let's go
// one level further, and also comment on the Likes on Comment.
// User
// L Post
// L 2 * Like
// L Comment
// L Comment
// L Like
// L Comment
// Another user Comments on the Like on Comment on Post.
p = api.Get("Like", like.Id).SetSource(newUser()).
AddChild("Comment").Set("body",
fmt.Sprintf("Comment %s on Like", x.UniqueString(2)))
err = p.Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Print("Added Comment on Like")
user = printAndGetUser(uid)
post = user.Post[0]
if len(post.Comment) == 0 {
log.Fatalf("No comment found: %+v", post)
}
comment = post.Comment[0]
p = api.Get("Comment", comment.Id).SetSource(newUser()).Set("censored", true)
err = p.Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
q := api.NewQuery("Comment", comment.Id).UptoDepth(0)
result, err := q.Run(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
js, err := result.ToJson()
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Printf("\n%s\n%s\n%s\n", sep, string(js), sep)
user = printAndGetUser(uid)
post = user.Post[0]
if len(post.Like) == 0 {
log.Fatalf("No like found: %+v", post)
}
like = post.Like[0]
p = api.Get("Like", like.Id).SetSource(newUser()).MarkDeleted()
err = p.Execute(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
q = api.NewQuery("User", uid).Collect("Post")
q.Collect("Like").UptoDepth(10)
q.Collect("Comment").UptoDepth(10).FilterOut("censored")
result, err = q.Run(c)
if err != nil {
log.Fatalf("Error: %v", err)
}
js, err = result.ToJson()
if err != nil {
log.Fatalf("Error: %v", err)
}
fmt.Printf("\n%s\n%s\n%s\n", sep, string(js), sep)
// By now we have a fairly complex Post structure. CRUD for
// which would have been a lot of work to put together using
// typical SQL / NoSQL tables.
}