44 lines
825 B
Go
44 lines
825 B
Go
package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"git.tuxpa.in/a/lambda/parallel"
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)
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type someResult struct {
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Title string `json:"title"`
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Id int `json:"id"`
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}
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func main() {
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var requests = make([]*http.Request, 20)
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for i := range requests {
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r, _ := http.NewRequest("GET", fmt.Sprintf("https://jsonplaceholder.typicode.com/todos/%d", i), nil)
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requests[i] = r
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}
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results, errs := parallel.MapErrorV(requests, func(r *http.Request) (*someResult, error) {
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out := &someResult{}
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res, err := http.DefaultClient.Do(r)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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err = json.NewDecoder(res.Body).Decode(out)
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return out, err
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}, 4)
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for i, v := range results {
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if errs[i] != nil {
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log.Printf("err: %s", errs[i])
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} else {
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log.Printf("result: %+v", v)
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}
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}
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}
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