Develop Reference

Faces indexed by iOS/Android app are not detected by Android/iOS App - AWS Rekognition

So I have been working on a product (Android First and then iOS) for a long time that index faces of people using AWS Rekognition and when they are again scanned later, it identifies them.
It's working great when I index a face from an Android device and then try to search it with an Android device. But if I try to search it later on iOS app, it doesn't find it. Same is the result if I go other way round. Index with iOS, search with Android, not found.
The collection ID is same while indexing and searching on both devices. I couldn't figure out how is it possible that a face indexed by one OS type, same region, same collection, couldn't be found while on other device.
If anyone here could try and help me with the issue, please do. I'll be really thankful.
Update 1: I have called "listCollections" function on both iOS and android apps. Both of them are showing different list of collections. This is the issue. But I can't figure our why it is happening. The identity pool and region is same on both of them.
Here is my Android Code to access Rekognition:
mCredentialsProvider = new CognitoCachingCredentialsProvider(
mContext,
"us-east-2:xbxfxexf-x5x5-xax7-x9xf-x5x0xexfx1xb", // Identity pool ID
Regions.US_EAST_2 // Region
);
mUUID = UUID.randomUUID().toString().replace("-", "");
mAmazonS3Client = new AmazonS3Client(mCredentialsProvider);
mAmazonS3Client.setRegion(Region.getRegion(Regions.US_EAST_2));
mAmazonRekognitionClient = new AmazonRekognitionClient(mCredentialsProvider);
if(!mAmazonS3Client.doesBucketExist(mFacesBucket)) {
mAmazonS3Client.createBucket(mFacesBucket);
}
Log.i(TAG, "Uploading image to S3 Bucket");
mAmazonS3Client.putObject(mFacesBucket, getS3ObjectName(), new File(data[0].toString()));
Log.i(TAG, "Image Uploaded");
Image image = new Image();
try {
image.setBytes(ByteBuffer.wrap(Files.toByteArray(new File(data[0].toString()))));
} catch (IOException e) {
e.printStackTrace();
}
Log.i(TAG, "Indexing image");
IndexFacesRequest indexFacesRequest =new IndexFacesRequest()
.withCollectionId(mFacesCollection)
.withImage(image)
.withExternalImageId(mUUID)
.withDetectionAttributes("ALL");
mAmazonRekognitionClient.indexFaces(indexFacesRequest);
Here is my iOS code to access Rekognition:
func uploadToCollection(img: UIImage)
{
let myIdentityPoolId="us-east-2:xbxfxexf-x5x5-xax7-x9xf-x5x0xexfx1xb"
let credentialsProvider = AWSCognitoCredentialsProvider(regionType: .USEast2, identityPoolId: myIdentityPoolId)
//store photo in s3()
let configuration = AWSServiceConfiguration(region: .USEast2, credentialsProvider: credentialsProvider)
AWSServiceManager.default().defaultServiceConfiguration = configuration
rekognitionClient = AWSRekognition.default()
guard let request = AWSRekognitionIndexFacesRequest() else
{
puts("Unable to initialize AWSRekognitionindexFaceRequest.")
return
}
var go=false
request.collectionId = "i_faces" + self.firebaseID.lowercased() //here iosCollection will be replaced by firebase Current UserID
request.detectionAttributes = ["ALL", "DEFAULT"]
request.externalImageId = self.UUID //this should be mUUID, passed as parameter to this function
let sourceImage = img
let image = AWSRekognitionImage()
image!.bytes = sourceImage.jpegData(compressionQuality: 0.7)
request.image = image
self.rekognitionClient.indexFaces(request) { (response:AWSRekognitionIndexFacesResponse?, error:Error?) in
if error == nil
{
print("Upload to Collection Complete")
}
go=true
return
}
while(go==false){}
}

Create a collection and added images to the collection and create an index. I suspect few things in your setup and code.
1) The Identity Pool Id, AWS Region used across iOS and Android
2) The name of the collection used (pay attention to the delimiters used in the collection name)
Android:
CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(appContext, "MyPoolID", Regions.US_EAST_1);
public void searchFacesByImage() {
Image source = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms.jpg"));
Image ms2 = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms-2.jpg"));
Image ms3 = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms-3.jpg"));
Image ms4 = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms-4.jpg"));
String collectionId = "MyCollectionID";
AmazonRekognitionClient client = new AmazonRekognitionClient(credentialsProvider);
try {
System.out.println("Creating collection: " + collectionId );
CreateCollectionRequest request = new CreateCollectionRequest().withCollectionId(collectionId);
CreateCollectionResult createCollectionResult = client.createCollection(request);
System.out.println("CollectionArn : " + createCollectionResult.getCollectionArn());
System.out.println("Status code : " + createCollectionResult.getStatusCode().toString());
} catch (Exception ex) {
ex.printStackTrace();
}
IndexFacesRequest indexFacesRequest = new IndexFacesRequest();
indexFacesRequest.setImage(source);
indexFacesRequest.setCollectionId(collectionId);
client.indexFaces(indexFacesRequest);
indexFacesRequest = new IndexFacesRequest();
indexFacesRequest.setImage(ms2);
indexFacesRequest.setCollectionId(collectionId);
client.indexFaces(indexFacesRequest);
indexFacesRequest = new IndexFacesRequest();
indexFacesRequest.setImage(ms4);
indexFacesRequest.setCollectionId(collectionId);
client.indexFaces(indexFacesRequest);
SearchFacesByImageRequest searchFacesByImageRequest = new SearchFacesByImageRequest();
searchFacesByImageRequest
.withCollectionId(collectionId)
.withImage(ms3)
.withFaceMatchThreshold(80F);
SearchFacesByImageResult searchFacesByImageResult =
client.searchFacesByImage(searchFacesByImageRequest);
List <FaceMatch> faceImageMatches = searchFacesByImageResult.getFaceMatches();
for (FaceMatch face: faceImageMatches) {
Log.d(TAG, face.toString());
}
}
iOS:
Create the Cognito Credentials Provider
AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1 identityPoolId: #"MyPoolID"];
AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:credentialsProvider];
[AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;
Use the same Identity Pool Id and Region (us-east-1).
func faceIndexNoFacesSearch() {
let rekognition = AWSRekognition.default()
let faceRequest = AWSRekognitionSearchFacesByImageRequest()
do {
let image = AWSRekognitionImage()
image?.s3Object = AWSRekognitionS3Object()
image?.s3Object?.bucket = "us-east-1-bucket"
image?.s3Object?.name = "ms-2.jpg"
faceRequest!.image = image
faceRequest!.collectionId = "MyCollectionID"
rekognition.searchFaces(byImage: faceRequest!).continueWith { (response) -> Any? in
XCTAssertNil(response.error)
XCTAssertNotNil(response.result)
if let result = response.result {
XCTAssertNotNil(result.faceMatches)
}
return nil
}.waitUntilFinished()
} catch {
print("exception")
}
}
Please post questions in the comment and we can discuss there.

Ok so the problem turned out to be much different and solution was rather very simple. I posted another question regarding the same problem when I found it was a bit different and I have posted an answer as well.
Here it is:
https://stackoverflow.com/a/53128777/4395264

Append line of text to Azure Block Blob from Android

I want to append a line of text to an existing Azure cloud block blob from an Android device.
In VB.Net I would AcquireLease, getBlockBlobReference, DownloadToFile, add the line on the local files system, UploadToFile, ReleaseLease . Simple and secure, if a bit long-winded.
In Android, it looks a little more tricky. At the moment, my best solution is this:
CloudBlockBlob blob1=container.getBlockBlobReference(chosenOne+".txt");
String proposedLeaseId1 = UUID.randomUUID().toString();
OperationContext operationContext1 = new OperationContext();
blob1.acquireLease(15, proposedLeaseId1, null /*access condition*/,null/* BlobRequestOptions */, operationContext1);
AccessCondition condition = new AccessCondition();
condition.setLeaseID(proposedLeaseId1);
BlobInputStream blobIn = blob1.openInputStream();
blob1.downloadAttributes();
long blobLengthToUse = blob1.getProperties().getLength();
byte[] result = new byte[(int) blobLengthToUse];
blob1.downloadToByteArray(result,0);
blobIn.close();
CloudBlockBlob blob1 = container.getBlockBlobReference(chosenOne+".txt");
String proposedLeaseId1 = UUID.randomUUID().toString();
OperationContext operationContext1 = new OperationContext();
blob1.acquireLease(15, proposedLeaseId1, null /*access condition*/,null/* BlobRequestOptions */, operationContext1);
AccessCondition condition = new AccessCondition();
condition.setLeaseID(proposedLeaseId1);
BlobInputStream blobIn = blob1.openInputStream();
blob1.downloadAttributes();
long blobLengthToUse = blob1.getProperties().getLength();
byte[] result = new byte[(int) blobLengthToUse];
blob1.downloadToByteArray(result,0);
blobIn.close();
blob1.deleteIfExists(DeleteSnapshotsOption.NONE,condition, null, operationContext1);
BlobOutputStream blobOut = blob1.openOutputStream();
//this is a byte by byte write ...
//which is fine ... but no use if you want to replace ...
/*int next = blobIn.read();
while (next != -1) {
blobOut.write(next);
next = blobIn.read();
}*/
blobOut.write(result);
String strTemp="This is just a test string";
blobOut.write(strTemp.getBytes());
blobOut.close();
Apart from being extremely long-winded, I am concerned that as soon as I delete the blob, the lease will go and that I may hit integrity issues. I would appreciate any help in making this code simpler and more secure. I know that Microsoft are planning to introduce append blobs in 3Q 2015, but I want to implement this now.

You can call PutBlock to upload the appended content (the maximum size of each block is 4MB, so please split the appended content into blocks if required), and then call PutBlockList on this blob by passing in the previously committed blocks plus and newly appended blocks.

Air android/mobile: same sharedobject for different apps?

I have two apps, one is a trial version the other the full version of a game, both made with adobe air. While saving data via the sharedobjects solution is no problem, I would like to use "one" savegame for both appsm, so users can keep their progress when upgrading to the full version. I tried around a little. But code like e.g. ...:
SharedObject.getLocal("myApp","/");
... doesnt work. So the question is, is there a way to have two Air apps using the same shared object? Or maybe if not using, at least "read" the shared object of another Air app?
Thanks in advance,
ANB_Seth

The answer is yes, I actually made a game transfer system for iOS and Android via network connection and 6 digit hash the user has to enter in the newly installed app to fetch the SO from the server. You could do this with a simple file stored locally on the SD card or other local storage device.
/**
* send this user's current save data to the server
*/
public function send():void{
var ba:ByteArray = new ByteArray();
// Main.sv.user - is the registerClassAlias object we write/read locally via SharedObject
ba.writeObject(Main.sv.user);
var name:String = Crypto.hash("Random Secrect Salt - typically user score, name, etc.");
// create 6 digit hash
var key:String = Crypto.hash(name).slice(0, 6).toUpperCase();
var request:URLRequest = new URLRequest ( 'https://sharedobject.com/transfer/save/name/'+name+'/key/'+key );
var loader: URLLoader = new URLLoader();
request.contentType = 'application/octet-stream';
request.method = URLRequestMethod.POST;
request.data = ba;
loader.addEventListener(IOErrorEvent.IO_ERROR, function (evt:Event) {
trace("error - network");
onSaveRestoreEvent(1);
});
loader.addEventListener(Event.COMPLETE, function (evt:Event) {
addChild(new BaseDialog("Save Sent To Server", "Your data has been sent to the server. To get this data back from the server " +
"you will need your secret key. Please write this six digit key down:\n"+name));
});
loader.load( request );
}
/**
* create a GET SO dialog
*/
public function receive():void{
var text:Sprite = new Sprite();
var textInput:TextInput = new TextInput();
textInput.width = Constants.SCREEN_WIDTH-100;
textInput.y = -50;
text.addChild(textInput);
var dialog:BaseDialog = new BaseDialog("Enter Secret Save Key", "Please enter your six digit secret save key in the field below, then press \"Get\".\n\n",
"Get", function():void{
text.removeChildren();
var url:String = "https://sharedobject.com/transfer/get/name/"+textInput.text; //servlet url
var request:URLRequest = new URLRequest(url);
//get rid of the cache issue:
var urlVariables:URLVariables = new URLVariables();
urlVariables.nocache = new Date().getTime();
request.data = urlVariables;
request.method = URLRequestMethod.GET;
var loader:URLLoader = new URLLoader();
loader.dataFormat = URLLoaderDataFormat.BINARY;
loader.addEventListener(Event.COMPLETE, function (evt:Event) {
var loader:URLLoader = URLLoader(evt.target);
var bytes:ByteArray = loader.data as ByteArray;
bytes.position = 0;
if(bytes.length <= 10 || !(bytes.readObject() is User)){
onSaveRestoreEvent(2);
}else{
try{
bytes.position = 0;
Main.sv.user = (bytes.readObject() as User);
Main.sv.save();
onSaveRestoreEvent(0);
}
catch( e : EOFError ){
onSaveRestoreEvent(3);
}
}
});
loader.addEventListener(IOErrorEvent.IO_ERROR, function (evt:Event) {
trace("error - network");
onSaveRestoreEvent(1);
});
loader.load(request);
},
"Close", function():void{text.removeChildren();}, null, null, text);
dispatchEvent(new CreateBaseDialogEvent(dialog));
}
/**
* called after the restore save system is done
* #param prompt int [0 = complete][1 = error network][2 = error key][3 = error EOF]
*/
private function onSaveRestoreEvent(prompt:int):void{
var dialog:BaseDialog;
if(prompt == 0){
dialog = new BaseDialog("Restore Complete!", "All save data has been restored.");
}else if(prompt == 1){
dialog = new BaseDialog("Network Error!", "Please seek an internet connection and try again.");
}else if(prompt == 2){
dialog = new BaseDialog("Invalid Secret Key!", "The key you've entered seems to be invalid, or the save data has expired on the server. " +
"Data only lasts on the server for 24 hours.");
}else{
dialog = new BaseDialog("Error!", "There was an issue getting the file from the server. Please try the transfer again.");
}
dispatchEvent(new CreateBaseDialogEvent(dialog));
}

Paypal refund api gives error NO API ACCESS TO RECEIVER

I am using pre-approvals and delayed chained payment from adaptive payment api.
My test business account from which api is used is also the primary receiver account.
I get a paykey generated after using the preapproval to initiate the delayed payment. The money is received accurately in the primary receiver. My application now has a scenario where the money has to be refunded from primary receiver back to the purchaser. When tyring to execute this refund with the paykey and specifying the receiver and also settings the primary receiver flag, I receive an error NO_API_ACCESS_TO_RECEIVER.
This is blocking my app release and is a serious trouble. Could you please unblock me at earliest.
This is my code:
RefundRequest refundRequest = new RefundRequest();
refundRequest.setPayKey(payKey);
refundRequest.setCurrencyCode(KeyConstants.CURRENCY_USD_CODE);
refundRequest.setRequestEnvelope(ClientInfoUtil.getMyAppRequestEnvelope());
ReceiverList receiverList = new ReceiverList();
Receiver receiver = new Receiver();
receiver.setEmail(businessAccountPaypalEmail);
receiver.setPrimary(true);
double truncatedAmount = NumberUtil.getDoubleTruncate(amount, KeyConstants.TWO_DECIMAL_FORMAT);
BigDecimal trunBigDecimal = new BigDecimal(truncatedAmount);
receiver.setAmount(trunBigDecimal.setScale(2, RoundingMode.HALF_UP));
receiverList.getReceiver().add(receiver);
refundRequest.setReceiverList(receiverList);
try {
AdaptivePayments adaptivePayments = new AdaptivePayments();
RefundResponse refundResponse = adaptivePayments.refund(refundRequest);
ResponseEnvelope responseEnvelope = refundResponse.getResponseEnvelope();
AckCode ackCode = responseEnvelope.getAck();
if(ackCode == AckCode.SUCCESS || ackCode == AckCode.SUCCESS_WITH_WARNING){
Logger.getLogger(PayPalSessionBean.class.getName()).log(Level.INFO, "Refund success for the pay key {0} and messsage {1}",
new Object[]{payKey});
System.out.println("Ack code is " + ackCode);
RefundInfoList refundInfoList = refundResponse.getRefundInfoList();
List<RefundInfo> refundInfos = refundInfoList.getRefundInfo();
for (Iterator iterator = refundInfos.iterator(); iterator
.hasNext();) {
RefundInfo refundInfo = (RefundInfo) iterator.next();
System.out.println(refundInfo.getReceiver().getEmail() + "\t" + refundInfo.getRefundTransactionStatus() + "\t" +
refundInfo.getRefundGrossAmount() + '\t' + refundInfo.getRefundStatus() + '\t');
ErrorList errorList = refundInfo.getErrorList();
List<ErrorData> errs = errorList.getError();
for (Iterator iterator2 = errs.iterator(); iterator2
.hasNext();) {
ErrorData errorData = (ErrorData) iterator2.next();
System.out.println(errorData.getMessage());
}
}
return true;
}
In the above code snippet the ACk code returned is success, but when I print the refund status of the RefundInfo object, it says NO_API_ACCESS_TO_RECEIVER.
I have already given the permission to the api caller from the paypal panel of the primary account.
Is there something that is missing from my side? Please help me out!

If your just refunding from the Primary (yourself) back to the sender and you want to do a full refund, then you shouldn't need to specify any receivers. Otherwise I would need some type of PayKey or Correlation ID to look up the request on my side.

Got the answer myself. Sharing with you all
It was reading the paypal SDK client property file from Wrong location.
To avoid such kind of problems we should set the properties in the constructor of AdaptivePayments.
Below is the code for more illustration:
There is a session bean PropertyBean which has function getPayPalProperties() which reads all paypal properties from a property file.
Properties properties = propertyBeanLocal.getPayPalProperties();
AdaptivePayments adaptivePayments = new AdaptivePayments(properties);
And Instead of doing this
refundRequest.setRequestEnvelope(ClientInfoUtil.getMyAppRequestEnvelope());
do this.
RequestEnvelope requestEnvelope = new RequestEnvelope();
requestEnvelope.setErrorLanguage("en_us");
refundRequest.setRequestEnvelope(requestEnvelope);

Using App inventor app to mail from google app engine

Using Shival wolfs WolfWebEmail2 in app inventor to send mail via Google app engine and nothing arriving in recipient email.
need to confirm if my code is correct.
not showing any errors on app engine.
Does this look correct for command to run webapp?
application = webapp.WSGIApplication([('/', MainPage), ('/sendemail', sendemail), ('/attach', attachfile)], debug=True)
def main():
run_wsgi_app(application)
Think i have got a bit of small keyboard large finger syndrome.
Many thanks in advance.
OK Zig. Many thanks. Here it is
class sendemail(webapp.RequestHandler):
def process_email(self, data):
outvalue=""
ValidData = False
logging.info("data: %s" %data)
details=data.split("|||")
data = "\"%s\"" %data
if len(details) == 5 or len(details) == 7:
message = mail.EmailMessage()
message.sender = EmailFrom
NewAuthKey = details[0]
EmailTo = details[1]
EmailSubject = details[2]
EmailBody = details[3]
EmailBody = EmailBody.replace("\\t","\t")
if details[4].lower()=="yes" and len(details) == 7:
filename=details[5];
file_id=details[6];
ValidData = True
if ValidData:
if NewAuthKey == AuthKey:
logging.info("Auth Key Valid")
else:
logging.info("Auth Key does not Match")
outvalue = "Auth Key is Invalid"
ValidData = False
if ValidData:
if mail.is_email_valid(EmailTo):
message.to = EmailTo
else:
logging.info("Email Address for TO Address is Invalid")
outvalue = "Email Address for TO Address is Invalid"
ValidData = False
if ValidData:
if len(EmailBody) > 0 and len(EmailSubject) > 0:
message.subject = EmailSubject
message.body = EmailBody
else:
logging.info("Subject or Body was Empty")
outvalue = "Subject or Body was left Empty"
ValidData = False
if ValidData:
if details[4].lower()=="yes":
try:
filedata = db.GqlQuery("SELECT * FROM emailattach WHERE id = :1 LIMIT 1",file_id).get()
if filedata:
message.attachments = [(filename, filedata.blob)]
except Exception, message:
ValidData = False
logging.info("Could not attach file:\n\n "+str(message))
outvalue = "Could not attach file:\n\n "+str(message)
if ValidData:
try:
message.send()
logging.info("Email Sent")
outvalue = "Email Sent"
if details[4].lower()=="yes": ##delete the file once emailed
key = db.GqlQuery("SELECT __key__ FROM emailattach where id = :1", file_id).get()
if key:
db.run_in_transaction(dbSafeDelete,key)
except Exception, message:
logging.info(message)
outvalue = str(message)
self.response.out.write(outvalue)
I hope thats it! new to this.

You've left out the last part of the boiplerplate:
if __name__ == '__main__':
main()
Without it, the first request to each instance won't be processed.

Can you show us the sendemail function?
EDIT
message.sender = EmailFrom
Where is EmailFrom?
Try removing all the validations and check if the email gets sent.
First try running this-
message = mail.EmailMessage(sender="you#domain.com",
subject="Testing")
message.to = "you#domain.com"
message.body = "This is the body!"
message.send()
Change both email addresses to your email.
If it works then check the validation and other parts one at a time.