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// Request manages all outgoing requests for cetus projects.
package request
import (
"fmt"
"io/ioutil"
"net/http"
"time"
)
// GetRes takes api and params as input and returns the body and
// error.
func GetRes(api string, params map[string]string) (string, error) {
var body string
c := http.Client{
// TODO: timeout should be configurable by the user
Timeout: time.Second * 64,
}
req, err := http.NewRequest(http.MethodGet, api, nil)
if err != nil {
err = fmt.Errorf("%s\n%s",
"request.go: failed to create request",
err.Error())
return body, err
}
// User-Agent should be passed with every request to make work
// easier for the server handler. Include contact information
// along with the project name so they could reach you if
// required.
req.Header.Set("User-Agent",
"Andinus / Cetus - https://andinus.nand.sh/projects/cetus")
// Params is a simple map[string]string which contains
// parameters that needs to be passed along with the request.
// There is no check involved here & it should be done before
// passing params to this function.
q := req.URL.Query()
for k, v := range params {
q.Add(k, v)
}
req.URL.RawQuery = q.Encode()
res, err := c.Do(req)
if err != nil {
err = fmt.Errorf("%s\n%s",
"request.go: failed to get response",
err.Error())
return body, err
}
defer res.Body.Close()
if res.StatusCode != 200 {
err = fmt.Errorf("Unexpected response status code received: %d %s",
res.StatusCode,
http.StatusText(res.StatusCode))
return body, err
}
// This will read everything to memory and is okay to use here
// because the json response received will be small unlike in
// download.go (package background) where it is an image.
out, err := ioutil.ReadAll(res.Body)
if err != nil {
err = fmt.Errorf("%s\n%s",
"request.go: failed to read body to out (var)",
err.Error())
return body, err
}
body = string(out)
return body, err
}
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