For this you'd want to look at the documentation for using Firebase from a ' Server <https://firebase.google.com/docs/server/setup#prerequisites>'. The Firebase SDK supports both Java and NodeJS at this time. You can also call the Firebase API from other App Engine languages by using the REST API <https://firebase.google.com/docs/reference/rest/database/> directly (eg. directly calling the API over HTTP using App Engine's URL Fetch <https://cloud.google.com/appengine/docs/python/outbound-requests> service).
On Friday, June 17, 2016 at 9:02:29 PM UTC-4, widowmaker110 wrote: > > I followed this tutorial > <https://cloud.google.com/appengine/docs/java/endpoints/helloendpoints-android-studio>for > > setting up my Google App Engine instance and I am also using Firebase. My > goal is to put all of the "computation" on Google App Engine. I want to > call a function like this one below: > > > MyEndpoint: > > package productions.widowmaker110.backend; > > /** An endpoint class we are exposing */ > @Api( > name = "myApi", > version = "v1", > namespace = @ApiNamespace( > ownerDomain = "backend.widowmaker110.productions", > ownerName = "backend.widowmaker110.productions", > packagePath="" > ) > ) > public class MyEndpoint { > > /** A simple endpoint method that takes a name and says Hi back */ > @ApiMethod(name = "sayHi") > public MyBean sayHi(@Named("name") String name) { > > // Write a message to the database > FirebaseDatabase database = FirebaseDatabase.getInstance(); > DatabaseReference myRef = database.getReference("message"); > > // Read from the database > myRef.addValueEventListener(new ValueEventListener() { > @Override > public void onDataChange(DataSnapshot dataSnapshot) { > // This method is called once with the initial value and again > // whenever data at this location is updated. > String value = dataSnapshot.getValue(String.class); > Log.d(TAG, "Value is: " + value); > } > > @Override > public void onCancelled(DatabaseError error) { > // Failed to read value > Log.w(TAG, "Failed to read value.", error.toException()); > } > }); > > MyBean response = new MyBean(); > response.setData("Hi, " + name); > > return response; > } > > } > > > MainActivity: > > package productions.widowmaker110.gpsweather; > > // imports... > > public class MainActivity extends AppCompatActivity { > > @Override > protected void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.activity_main); > > new EndpointsAsyncTask().execute(new Pair<Context, String>(this, > "Manfred")); > } > > class EndpointsAsyncTask extends AsyncTask<Pair<Context, String>, Void, > String> { > private MyApi myApiService = null; > private Context context; > > @Override > protected String doInBackground(Pair<Context, String>... params) { > if(myApiService == null) { // Only do this once > MyApi.Builder builder = new > MyApi.Builder(AndroidHttp.newCompatibleTransport(), > new AndroidJsonFactory(), null) > // options for running against local devappserver > // - 10.0.2.2 is localhost's IP address in Android emulator > // - turn off compression when running against local devappserver > .setRootUrl("http://10.0.2.2:8080/_ah/api/";) > .setGoogleClientRequestInitializer(new GoogleClientRequestInitializer() { > @Override > public void initialize(AbstractGoogleClientRequest<?> > abstractGoogleClientRequest) throws IOException { > abstractGoogleClientRequest.setDisableGZipContent(true); > } > }); > // end options for devappserver > > myApiService = builder.build(); > } > > context = params[0].first; > String name = params[0].second; > > try { > return myApiService.sayHi(name).execute().getData(); > } catch (IOException e) { > return e.getMessage(); > } > } > > @Override > protected void onPostExecute(String result) { > Toast.makeText(context, result, Toast.LENGTH_LONG).show(); > } > } > } > > I understand the above code for Firebase is Android specific so running on a > Google App Engine instance doesn't work. I was wondering if any one knows how > to perform CRUD > > operations on a firebase database from Google App Engine backend. Any help is > appreciated. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/ee5e891e-902c-43db-bd54-febe520509dd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
