Improve document about authenticating with GitHub Apps #1069
Description
Hi,
I'm currently trying to have a working example how to properly authenticate as a GitHub app in my organization. In the app settings I can find the application ID. Using:
$ curl -i -H "Authorization: Bearer $JWT_TOKEN" -H "Accept: application/vnd.github.machine-man-preview+json" https://api.github.com/app/installations
I can also get the installation ID.
Here is my code:
package main
import (
"context"
"net/http"
"github.com/bradleyfalzon/ghinstallation"
"github.com/google/go-github/github"
"github.com/sirupsen/logrus"
)
func main() {
ctx := context.Background()
// Set here you application ID and installation id
appId := 111111
installationId := 22222
// Wrap the shared transport for use with defined application and installation IDs
itr, err := ghinstallation.NewKeyFromFile(http.DefaultTransport, appId, installationId, "/tmp/key.pem")
if err != nil {
logrus.Error(err)
}
access_token, _ := itr.Token()
logrus.Infof("Installation access token: %s", access_token)
// Use installation transport with client
// NewClient returns a new GitHub API client.
// If a nil httpClient is provided, http.DefaultClient will be used. To use API methods which require authentication,
// provide an http.Client that will perform the authentication for you.
client := github.NewClient(&http.Client{Transport: itr})
// Get org installation
appService := client.Apps
appInst, resp, err := appService.FindOrganizationInstallation(ctx, "Scout24")
if err != nil {
logrus.Infof("error: %s", err)
}
// installations, resp, err := appService.ListInstallations(ctx, nil)
logrus.Info(resp)
logrus.Info(appInst)
}
And the output is:
INFO[0000] Installation access token: v1.4933ed8b240cb8be4xxxxxxxxxxxxxxxxxxx
INFO[0001] error: GET https://api.github.com/orgs/Scout24/installation: 401 A JSON web token could not be decoded []
INFO[0001] &{0xc000130090 0 0 0 0 github.Rate{Limit:0, Remaining:0, Reset:github.Timestamp{0001-01-01 00:00:00 +0000 UTC}}}
INFO[0001] <nil>
Obviously I do get the installation access token however when I try to get the organization installation it failed with:
error: GET https://api.github.com/orgs/Scout24/installation: 401 A JSON web token could not be decoded []
I guess theAuthorization: Bearer $JWT_TOKEN header is not properly set.
Any ideas?
Thanks in advance.