Develop Reference

Google Cloud TextToSpeech : java.io.IOException: The Application Default Credentials are not available

I am trying to run the TextToSpeech code from Google Cloud TextToSpeech Service.
Curently stuck at Authentication part referring link Authenticating as a service account
Below is the Code :
public class TexttoSpeech {
/** Demonstrates using the Text-to-Speech API. */
public static void getAudio() throws Exception {
// Instantiates a client
// Below Line is Point of Error in Code
try (TextToSpeechClient textToSpeechClient = TextToSpeechClient.create()) {
// Set the text input to be synthesized
SynthesisInput input = SynthesisInput.newBuilder().setText("Hello, World!").build();
// Build the voice request, select the language code ("en-US") and the ssml voice
//gender
// ("neutral")
VoiceSelectionParams voice =
VoiceSelectionParams.newBuilder()
.setLanguageCode("en-US")
.setSsmlGender(SsmlVoiceGender.NEUTRAL)
.build();
// Select the type of audio file you want returned
AudioConfig audioConfig =
AudioConfig.newBuilder().setAudioEncoding(AudioEncoding.MP3).build();
// Perform the text-to-speech request on the text input with the selected voice parameters and
// audio file type
SynthesizeSpeechResponse response =
textToSpeechClient.synthesizeSpeech(input, voice, audioConfig);
// Get the audio contents from the response
ByteString audioContents = response.getAudioContent();
byte[] audioArray=audioContents.toByteArray();
String converted= Base64.encodeBase64String(audioArray);
playAudio(converted);
// Write the response to the output file.
try (OutputStream out = new FileOutputStream("output.mp3")) {
out.write(audioContents.toByteArray());
System.out.println("Audio content written to file \"output.mp3\"");
}
}
}
public static void playAudio(String base64EncodedString){
try
{
String url = "data:audio/mp3;base64,"+base64EncodedString;
MediaPlayer mediaPlayer = new MediaPlayer();
mediaPlayer.setDataSource(url);
mediaPlayer.prepare();
mediaPlayer.start();
}
catch(Exception ex){
System.out.print(ex.getMessage());
}
}
}
But getting below error on :
java.io.IOException: The Application Default Credentials are not available. They are available
if running in Google Compute Engine. Otherwise, the environment variable
GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining the credentials.
See https://developers.google.com/accounts/docs/application-default-credentials for more
information.
Also tried Explicit credentials :
#Throws(IOException::class)
fun authExplicit() {
val projectID = "texttospeech-12345" // dummy id
// val imageUri: Uri =
Uri.fromFile(File("file:\\android_asset\\service_account_file.json"))
// val path=File(imageUri.path).absolutePath
// You can specify a credential file by providing a path to GoogleCredentials.
// Otherwise credentials are read from the GOOGLE_APPLICATION_CREDENTIALS environment
variable.
val credentials =
GoogleCredentials.fromStream(mContext.resources.openRawResource(R.raw.service_account_file))
.createScoped(Lists.newArrayList("https://www.googleapis.com/auth/cloud-platform"))
val storage: Storage =
StorageOptions.newBuilder().setProjectId(projectID).setCredentials(credentials)
.build().service
println("Buckets:")
// Error at storage.lists()
val buckets: Page<Bucket> = storage.list()
for (bucket in buckets.iterateAll()) {
println(bucket.toString())
}
}
But on device it gives error like :
Error getting access token for service account:
Unable to resolve host "oauth2.googleapis.com": No address associated with hostname, iss:
xyz#texttospeech-12345.iam.serviceaccount.com
And on Emulator the error is :
xxxxxxxxx does not have storage.buckets.list access to the Google Cloud project.
Please let me know if you guys need something more.
Any suggestion will be appreciated
Thanks in Advance
Also if I run below command in Cloud SDK :
gcloud auth application-default login
I get this but I didnt understood what its trying to say

You can pass the credentials while creating the client connection.
TextToSpeechSettings settings = TextToSpeechSettings.newBuilder()
.setCredentialsProvider(FixedCredentialsProvider.create(authExplicit("JSON FILE PATH")))
.build();
try (TextToSpeechClient textToSpeechClient = TextToSpeechClient.create(settings)) {
// ... rest of your code
}
// ... rest of your code
And
public static GoogleCredentials authExplicit(String jsonPath) throws IOException {
GoogleCredentials credentials = GoogleCredentials.fromStream(new FileInputStream(jsonPath))
.createScoped(Lists.newArrayList("https://www.googleapis.com/auth/cloud-platform"));
return credentials;
}
GoogleCredentials imported from Google Auth Library For Java OAuth2 HTTP
N.B You need to make sure you are able to fetch the JSON file in your application.

Dotmim.Sync null reference exception in web proxy post method

I am using Dotmim.sync framework. I am trying to sync an mssql database with my xamarin android app's sqlite database. So I implemented the web proxy to reach the database from the android app.
The proxy starts fine, but then when I call the sync from the android app the Post method gives a null reference error, but I cannot find what is null.
In the ASP.NET Core web app's Startup file:
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews();
// [Required]: To be able to handle multiple sessions
services.AddMemoryCache();
// [Required]: Get a connection string to your server data source
var connectionString = #"[my connection string]";
// [Required]: Tables list involved in the sync process
var tables = new string[] { "dbo.Album", "dbo.Artist", "dbo.Customer", "dbo.Invoice", "dbo.InvoiceItem", "dbo.Track" };
// [Required]: Add a SqlSyncProvider acting as the server hub.
services.AddSyncServer<SqlSyncChangeTrackingProvider>(connectionString, tables);
}
The SyncController:
[ApiController]
[Route("api/[controller]")]
public class SyncController : ControllerBase
{
private WebServerManager manager;
public SyncController(WebServerManager man) => this.manager = man;
[HttpPost]
public async Task Post()
{
await manager.HandleRequestAsync(this.HttpContext);
} //----> the Null error comes
[HttpGet]
public async Task Get() => await manager.HandleRequestAsync(this.HttpContext);
}
In the android app the sync function that is called:
public async Task SyncDatabase(string connString, Context context)
{
var handler = HttpClientHandlerService.GetInsecureHandler();
HttpClient httpClient = new HttpClient(handler);
httpClient.DefaultRequestHeaders.Host = $"localhost:44372";
var serverOrchestrator = new WebClientOrchestrator("https://10.0.2.2:44372/api/sync", client: httpClient);
// Second provider is using plain sqlite provider
var clientProvider = new SqliteSyncProvider(connString);
var agent = new SyncAgent(clientProvider, serverOrchestrator);
try
{
var result = await agent.SynchronizeAsync(); //---> error comes when this line is called
var output = result.ToString();
output = output.Replace("\n", " ").Replace("\t", " ").Replace("\r", " ");
Toast.MakeText(context, output, ToastLength.Long).Show();
}
catch (Exception e)
{
Toast.MakeText(context, e.Message, ToastLength.Long).Show();
}
}
Let me know what further information should I supply to solve this.
EDIT:
Calling from postman it gives this error: {"tn":"HttpHeaderMissingExceptiopn","m":"Header dotmim-sync-scope-name is missing."}
EDIT2:
Server orchestrator on the client side:
On the server side:
The details of the exception:

SOLUTION:
I tried the sync with a different database and tables, and that worked, so it was clear that dotmim has some problem with the tables I was using. So after lot of thinking I tried with a different schema name instead of dbo, since the other database that worked had something else. And it turns out the sync has some problem if the schema name is dbo, something gets mixed probably when it tries to create its own new tables. So use something different from dbo for schema.

Getting error when use Android Koush Ion to call Laravel route

I'm trying to learn android development, I'm using Android Studio. I need to access an external database (to insert, get itens ... CRUD) and I've found a tutorial that tells me to use koush ion, from Android using Ion, I call a web page that is a Laravel 7 Route. When I call without parameters, it works very well and I can get in Android the returned value. But when I use "setBodyParameter", I get the following error:
java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.gson.JsonElement com.google.gson.JsonObject.get(java.lang.String)' on a null object reference
My laravel route just calls this function:
function cadastrar(){
date_default_timezone_set('America/Sao_Paulo');
$resposta = array();
$myUser = null;
$nome = isset($_POST['nome']) ? $_POST['nome'] : 'Teste 2';
$email = isset($_POST['email']) ? $_POST['email'] : 'teste#gmail.com';
$myUser = new Usuario;
$myUser->nome = $nome;
$myUser->email = $email;
$myUser->save();
$resposta = array('id' => strval($myUser->id_usuario), 'nome' => $myUser->nome, 'email' => $myUser->email);
return json_encode($resposta);
}
My Laravel route is Route::get (but when I change it to Route::post I get an error too).
And my Android code that calls this page is:
final TextView txtErro = (TextView) findViewById(R.id.textView4);
txtErro.setText("");
final String strNome = nome.getText().toString();
final String strEmail = email.getText().toString();
String url = "**My URL to the route in laravel**";
Ion.with(MainActivity.this)
.load(url)
.setBodyParameter("nome", strNome)
.setBodyParameter("email", strEmail)
.asJsonObject()
.setCallback(new FutureCallback<JsonObject>() {
#Override
public void onCompleted(Exception e, JsonObject result) {
try {
txtErro.setText(result.get("id").getAsString());
} catch (Exception erro) {
txtErro.setText(erro.toString());
}
}
});
When I comment the two lines of ".setBodyParameter", I get the returned value from laravel (if laravel route is Route::get). When I change the line of "load" to "load("POST", url)", I get an error.
I tried something related to CORS that I found here in StackOverflow and in my Laravel Kernel.php I commented the line that calls "VerifyCsrfToken", but still didn't working.
(Finally, I'm sorry if have something wrong in my english)

Did you try logging the Exception e and JsonObject result?
or set logging for the request and watch it in logcat
.setLogging("MyLogs", Log.DEBUG)

GraphQL server returns a 422 Error when request sent from Android app via Apollo Client

Hi I've been trying to set up a simple Android app to send a query to a GraphQL server I set up on my localhost via Springboot. If I don't use the app to send a request, either through GraphiQL or Postman, everything is fine and I have absolutely no issues. It's only when I send the request in the app through an Apollo Client that I get a 422 error.
I've set up log statements in Springboot that hosts the GraphQL server to log the payload.
Here's the schema as defined in Springboot.
type Query {
bookById(id: ID): Book
}
type Book {
id: ID
name: String
pageCount: Int
author: Author
}
type Author {
id: ID
firstName: String
lastName: String
}
Here's the query as defined in AndroidStudio for the Apollo Client to work with.
query BookById($id : ID) {
bookById(id : $id){
name
author{
firstName
lastName
}
}}
Here's the code in Android Studio.
public class MainActivity extends AppCompatActivity {
private static final String BASE_URL = "http://xxx.xxx.xxx.xxx:8080/graphql";
private static final String TAG = "MainActivity";
private TextView textBox;
private Button queryButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textBox = (TextView) findViewById(R.id.plainbox);
queryButton = (Button) findViewById(R.id.queryButton);
OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
ApolloClient apolloClient = ApolloClient.builder()
.serverUrl(BASE_URL)
.okHttpClient(okHttpClient)
.build();
// To make requests to our GraphQL API we must use an instance
// of a query or mutation class generated by Apollo.
Input<String> id = Input.fromNullable("book-1");
BookByIdQuery bq = BookByIdQuery.builder()
.id("book-1")
.build();
queryButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d(TAG, "REGISTERED CLICK");
Log.d(TAG, "Book Query: " + bq.queryDocument());
apolloClient.query(bq).enqueue(new
ApolloCall.Callback<BookByIdQuery.Data>() {
#Override
public void onResponse(#NotNull com.apollographql.apollo.api.Response<BookByIdQuery.Data> dataResponse){
Log.d(TAG, "Got Response: \n" + dataResponse.toString());
// changing UI must be on UI thread
textBox.setText(dataResponse.data().toString());
}
#Override
public void onFailure(#NotNull ApolloException a){
Log.d(TAG, "Failed, ApolloException " + a);
}
}); // end apolloClient query
}
});
}
Here's the log on the server side I get if making a request via GraphiQL or Postman.
DEBUG 13749 --- [nio-8080-exec-8] o.s.w.f.CommonsRequestLoggingFilter : Before request [uri=/graphql]
Here's the log when the request comes from Apollo in the app.
DEBUG 13749 --- [io-8080-exec-10] o.s.w.f.CommonsRequestLoggingFilter : Before request [uri=/graphql]
DEBUG 13749 --- [io-8080-exec-10] o.s.w.f.CommonsRequestLoggingFilter : REQUEST DATA : uri=/graphql;payload={"operationName":"BookById","variables":{"id":"book-1"},"query":"query BookById($id: ID) { bookById(id: $id) { __typename name author { __typename firstName lastName } }}"}]
Could the issue be related to the __typename attribute that Apollo is adding? Or could it be due to "id" being defined as a simple parameter in the server side schema but it being a variable in the Android Studio definition of the query?
I just expected to receive the response back with no issues since it seems to work every other way. Even if I type in the query manually into my web browser I have no issues getting the right response, it's only when working with Apollo Client in G̶r̶a̶p̶h̶Q̶L̶ Android Studio that this issue pops up and I'm at a complete loss as to why. I appreciate any help people can offer. Thanks in advance.
Update: So looking around some more it looks like when sending a query via ApolloClient it sends the query as an object instead of as a JSON string. Now I'm thinking that's probably the cause of the 422 error. I've also read that allowing my GraphQL server to accept objects in addition to JSON strings is something I must enable. I'm not really sure how to go about that though, so does anyone with experience with Spring Boot have any advice on how I could go about doing that? Thanks.

Calling sendFollowerNotification Firebase Function from Android App

So I realize that, since version 12.0, you can call Firebase Functions directly from an Android app... this makes sense with the given example for sending messages:
private Task<String> addMessage(String text) {
// Create the arguments to the callable function.
Map<String, Object> data = new HashMap<>();
data.put("text", text);
data.put("push", true);
return mFunctions
.getHttpsCallable("addMessage")
.call(data)
.continueWith(new Continuation<HttpsCallableResult, String>() {
#Override
public String then(#NonNull Task<HttpsCallableResult> task) throws Exception {
// This continuation runs on either success or failure, but if the task
// has failed then getResult() will throw an Exception which will be
// propagated down.
String result = (String) task.getResult().getData();
return result;
}
});
}
...where you're sending text to a function.
exports.addMessage = functions.https.onCall((data, context) => {
// [START_EXCLUDE]
// [START readMessageData]
// Message text passed from the client.
const text = data.text;
// [END readMessageData]
// [START messageHttpsErrors]
// Checking attribute.
if (!(typeof text === 'string') || text.length === 0) {
// Throwing an HttpsError so that the client gets the error details.
throw new functions.https.HttpsError('invalid-argument', 'The function must be called with ' +
'one arguments "text" containing the message text to add.');
}
// Checking that the user is authenticated.
if (!context.auth) {
// Throwing an HttpsError so that the client gets the error details.
throw new functions.https.HttpsError('failed-precondition', 'The function must be called ' +
'while authenticated.');
}
But I'm not exactly sure what I should be sending for something like the sendFollowerNotification example:
https://github.com/firebase/functions-samples/tree/master/fcm-notifications
exports.sendFollowerNotification = functions.database.ref('/followers/{followedUid}/{followerUid}')
.onWrite((change, context) => {
const followerUid = context.params.followerUid;
const followedUid = context.params.followedUid;
// If un-follow we exit the function.
if (!change.after.val()) {
return console.log('User ', followerUid, 'un-followed user', followedUid);
}
I mean... assuming the users are logged-in and have firebase UIDs and are in the database (my app automatically creates a firebase user when someone logs in)... it would appear that sendFollowerNotification just gets everything from the realtime database.
So what do I put under?:
.call(data)
And how am I retrieving the UID for the user that I'm trying to follow? For one that's logged in and using the app... I obviously already have that user's UID, token, and everything else... but I'm unsure of how to retrieve that info for the user who's about to be followed... if that makes any sense.
I've googled all over the internet and have never found an example of this particular kind of function call being used from within an android app using the new post 12.0.0 method. So I'm curious to know what the proper syntax should be.

Ok! This one really enraged me trying to figure it out... It turns out you don't need to call "sendFollowerNotification" at all.. All it does is it listens for changes to the Firebase Realtime Database. If you make changes in the syntax where sendFollowerNotification is looking... it automatically sends out the notification.
There's no call at all in "sendFollwerNotification" for writing users to the Realtime Database. I actually handle this at login:
private DatabaseReference mDatabase; //up top
mDatabase = FirebaseDatabase.getInstance().getReference(); //somewhere in "onCreate"
final String userId = mAuth.getUid();
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
mDatabase.child("users").child(userId).child("displayName").setValue(name);
mDatabase.child("users").child(userId).child("notificationTokens").child(refreshedToken).setValue(true);
mDatabase.child("users").child(userId).child("photoURL").setValue(avatar);
Then when one user follows another I just write that to the realtime database as well:
mDatabase.child("followers").child(user_Id).child(follower_id).setValue(true);
And that's it! The second a new follower is added to the RealTime Database... sendFollwerNotification will automatically send out a notification. You just need to setup a listener in your app for receiving messages and where it should redirect your users once they tap a message that's been received and you're done.