Firebase-ized your mobile app
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If you like or not, nowadays Firebase is an important milestone in the development of mobile applications and you can't avoid it.This deck is based on a true story!
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Firebase-ized your mobile app
- 1. Firebase-ized your mobile app Matteo Bonifazi @mbonifazi
- 3. Who I am ● Android developer since Eclair ● GDE...what else? A beer addicted ● I hate Outlook & Jira notifications My best quote: Day by day is the best way
- 11. Cross-platform C++ and Unity compliant
- 14. ❏ Account management ❏ Synch & conflict resolution ❏ Out of the box UI ❏ Compatible with most common accounts Firebase Autenthication
- 15. Firebase Autenthication User features Identity providers ● Google ● Facebook ● Twitter ● Github ● Represents the account signed in the app ● Fixed set of basic properties ● Additional custom properties via Realtime database ● Firebase Auth instance persists the user's state
- 16. How Bring-Your-Own Auth works Your Server Firebase Auth Server Firebase SDKs 1 User signs in using any method (password, Facebook, phone #) Authenticate with your server 2 Mint a “custom Token” 3 Exchange custom token for Firebase Token 4 5 Authenticate your users with other Firebase SDKs, without replacing your auth system Custom Firebase
- 19. // Initialize Firebase Auth FirebaseAuth mFirebaseAuth = FirebaseAuth.getInstance(); FirebaseUser mFirebaseUser = mFirebaseAuth.getCurrentUser(); if (mFirebaseUser == null) { // Not signed in, launch the Sign In activity ….. } else { mUsername = mFirebaseUser.getDisplayName(); if (mFirebaseUser.getPhotoUrl() != null) { mPhotoUrl = mFirebaseUser.getPhotoUrl().toString(); } }
- 20. Log.d(TAG, "firebaseAuthWithGooogle:" + acct.getId()); AuthCredential credential = GoogleAuthProvider.getCredential(.....); mFirebaseAuth.signInWithCredential(credential) .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() { …. public void onComplete(@NonNull Task<AuthResult> task) { Log.d(TAG, "signInWithCredential:onComplete:" + task.isSuccessful());
- 22. ❏ Easy scalable file storage ❏ Handles poor connectivity ❏ Backed by & accessible from Google Cloud Storage Firebase Storage
- 23. Firebase Storage keylines ● Firebase Storage performs uploads and downloads regardless of network quality. ● Integrates seamlessly with Firebase Authentication to identify users. ● Provides a declarative security language. ● Files stored in Google Cloud Platform - No Firebase Realtime Database.
- 24. Firebase Storage - Storage security rules ● determine who has read and write access to files stored ● determinate how files are structured and what metadata they contain ● Rules: the allow rule, which allows read and write operations
- 25. // Grants a user access to a node matching their user ID service firebase.storage { match /b/<your-firebase-storage-bucket>/ { // Files look like: "user/<UID>/path/to/file.txt" match /user/{userId}/{allPaths=**} { allow read, write: if request.auth.uid == userId; } } }
- 27. // Create a storage reference from our app StorageReference storageRef = storage.getReference(); // Create a reference to "mountains.jpg" StorageReference mountainsRef = storageRef.child("mountains.jpg"); // Create a reference to 'images/mountains.jpg' StorageReference mountainImagesRef = storageRef.child("images/mountains.jpg"); // While the file names are the same, the references point to different files mountainsRef.getName().equals(mountainImagesRef.getName()); // true mountainsRef.getPath().equals(mountainImagesRef.getPath()); // false
- 28. islandRef = storageRef.child("images/island.jpg"); File localFile = File.createTempFile("images", "jpg"); islandRef.getFile(localFile).....
- 30. ❏ Cloud-hosted NoSQL database ❏ Synch & conflict resolution ❏ Access directly from the app ❏ Freemium service Firebase Realtime Database
- 31. Realtime Firebase Realtime Database Keylines Offline No networking code
- 32. Firebase Realtime Database Structured Data
- 33. “Kale” “Kale” Realtime Event Realtime Event listRef.push(“Kale”);
- 34. Firebase Realtime Database Security Rules ● Define: ○ how your data should be structured ○ when data can be read from or written to ● Rules type: ○ .read: Describes if and when data is allowed to be read by users ○ .write: Describes if and when data is allowed to be written. ○ .indexOn: Specifies a child to index to support ordering and querying. ○ .validate: Defines what a correctly formatted value will look like
- 35. Firebase Realtime Database Security Rules ● Security overview: ○ Authentication: control access to database ○ Authorization: control access to data ○ Data validation: check data consistency ○ Indexes: define indexes for ordering and querying the data
- 37. DatabaseReference mDatabase = FirebaseDatabase.getInstance().getReference(); mDatabase.child("users").child(userId).child("username").setValue(name);
- 40. ❏ Cloud-hosted NoSQL database ❏ Synch & conflict resolution ❏ Access directly from the app ❏ Freemium service Firebase Firestore
- 42. Firebase Firestore Data Model ● rooms ○ roomA ■ name : "my chat room" ■ messages 1. message1 a. from : "alex" b. msg : "Hello World!" 2. message2 ■ ... ○ roomB ● ...
- 44. CollectionReference restaurants = mFirestore.collection("node - name"); restaurants.add(restaurant);
- 46. mFirestore = FirebaseFirestore.getInstance(); mQuery = mFirestore.collection("restaurants") .orderBy("avgRating", Query.Direction.DESCENDING) .limit(LIMIT);
- 50. // Listen for any change on document `matteo` in collection `users` exports.myFunctionName = functions.firestore .document('users/matteo).onWrite((event) => { // Function code here });
- 52. @mbonifazi