Using Api key I was able to fetch the videos in a playlist from Api Explorer. Execute without OAuth fetched the results json. Here is the link.
https://developers.google.com/apis-explorer/?hl=en_US#p/youtube/v3/youtube.playlistItems.list?part=snippet&playlistId=PLHyTuYqPkZCzt7mWZ4hmmrRdjLJiw6O2T&_h=2&
Implementing the same call using Go on App engine fails with below error:
Get https://www.googleapis.com/youtube/v3/playlistItems?alt=json&part=snippet&playlistId=PLHyTuYqPkZCzt7mWZ4hmmrRdjLJiw6O2T: http.DefaultTransport and http.DefaultClient are not available in App Engine. See https://cloud.google.com/appengine/docs/go/urlfetch/
Here is the code I use:
import (
"net/http"
"code.google.com/p/google-api-go-client/googleapi/transport"
"code.google.com/p/google-api-go-client/youtube/v3"
"log"
)
var service *youtube.Service
func init() {
var err error
log.Println("Apikey = ", apiKey)
client := &http.Client{Transport: &transport.APIKey{Key: apiKey}}
service, err = youtube.New(client)
if err != nil {
log.Println("ERROR in creating youtube New client ", err)
}
var items *youtube.PlaylistItemListResponse
if items, err = service.PlaylistItems.List("snippet").PlaylistId("PLHyTuYqPkZCzt7mWZ4hmmrRdjLJiw6O2T").Do(); err != nil {
log.Println("Error in fetching playlist items ", err) //this line shows the error
}
log.Println(Jsonify(items))
}
As of now, I run my code on local dev server i.e goapp serve
What is missing? How do I fetch youtube playlist videos using v3 api and ApiKey?
Found the solution. Below code did the task for me.
func FetchVideos(w http.ResponseWriter, r *http.Request) {
var service *youtube.Service
ctx := appengine.NewContext(r)
transport := &transport.APIKey{
Key: apiKey,
Transport: &urlfetch.Transport{Context: ctx}}
client := &http.Client{Transport: transport}
var err error
service, err = youtube.New(client)
if err != nil {
log.Println("ERROR in creating youtube New client ", err)
}
var items *youtube.PlaylistItemListResponse
if items, err = service.PlaylistItems.List("snippet").PlaylistId("PLHyTuYqPkZCzt7mWZ4hmmrRdjLJiw6O2T").Do(); err != nil {
log.Println("Error in fetching playlist items ", err)
}
log.Println(Jsonify(items))