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asyncio: redesign

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This commit is contained in:
Li Jie
2024-07-23 17:02:40 +08:00
parent eb7a94bb55
commit 7230e19166
3 changed files with 102 additions and 88 deletions
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94
x/io/_demo/asyncdemo/async.go
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@@ -18,84 +18,53 @@ func (r *Response) mock(body string) {
r.mockBody = body
}
func (r *Response) Text() *io.Promise[string] {
return io.NewPromise[string](func(resolve func(string, error)) {
resolve(r.mockBody, nil)
})
func (r *Response) Text() (resolve io.Promise[string]) {
resolve(r.mockBody, nil)
return
}
func HttpGet(url string, callback func(resp *Response, err error)) {
panic("todo: Get")
}
func AsyncHttpGet(url string) io.AsyncCall[*Response] {
return io.NewPromise[*Response](func(resolve func(*Response, error)) {
HttpGet(url, resolve)
})
func AsyncHttpGet(url string) (resolve io.Promise[*Response]) {
HttpGet(url, resolve)
return
}
type User struct {
Name string
}
func GetUser(uid string) io.AsyncCall[User] {
return io.NewPromise[User](func(resolve func(User, error)) {
resp, err := io.Await(AsyncHttpGet("http://example.com/user/" + uid))
if err != nil {
resolve(User{}, err)
return
}
func GetUser(uid string) (resolve io.Promise[User]) {
resp, err := io.Await[*Response](AsyncHttpGet("http://example.com/user/" + uid))
if err != nil {
resolve(User{}, err)
return
}
if resp.StatusCode != 200 {
resolve(User{}, fmt.Errorf("http status code: %d", resp.StatusCode))
return
}
if resp.StatusCode != 200 {
resolve(User{}, fmt.Errorf("http status code: %d", resp.StatusCode))
return
}
resp.mock(`{"name":"Alice"}`)
resp.mock(`{"name":"Alice"}`)
body, err := io.Await[string](resp.Text())
if err != nil {
resolve(User{}, err)
return
}
user := User{}
if err := json.Unmarshal([]byte(body), &user); err != nil {
resolve(User{}, err)
return
}
body, err := io.Await[string](resp.Text())
if err != nil {
resolve(User{}, err)
return
}
user := User{}
if err := json.Unmarshal([]byte(body), &user); err != nil {
resolve(User{}, err)
return
}
resolve(user, nil)
})
resolve(user, nil)
return
}
// func GetUser1(uid string) (resolve io.AsyncCall[User]) {
// resp, err := io.Await(AsyncHttpGet("http://example.com/user/" + uid))
// if err != nil {
// resolve(User{}, err)
// return
// }
// if resp.StatusCode != 200 {
// resolve(User{}, fmt.Errorf("http status code: %d", resp.StatusCode))
// return
// }
// resp.mock(`{"name":"Alice"}`)
// body, err := io.Await[string](resp.Text())
// if err != nil {
// resolve(User{}, err)
// return
// }
// user := User{}
// if err := json.Unmarshal([]byte(body), &user); err != nil {
// resolve(User{}, err)
// return
// }
// resolve(user, nil)
// }
func GetScore() *io.Promise[float64] {
panic("todo: GetScore")
}
@@ -108,9 +77,12 @@ func main() {
user, err := GetUser("123").Await()
fmt.Println(user, err)
user, err = io.Race(GetUser("123"), GetUser("456"), GetUser("789")).Await()
user, err = io.Race[User](GetUser("123"), GetUser("456"), GetUser("789")).Await()
fmt.Println(user, err)
users, err := io.All[User]([]io.AsyncCall[User]{GetUser("123"), GetUser("456"), GetUser("789")}).Await()
fmt.Println(users, err)
user, score, _, err := io.Await3[User, float64, io.Void](GetUser("123"), GetScore(), DoUpdate("update sth."))
fmt.Println(user, score, err)