Supercharge your Firebase App with Google Cloud Platform

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APP DEVELOPMENT Supercharge your Firebase app with Google Cloud Platform Sara Robinson @SRobTweets

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2 App Development @SRobTweets Who am I? Developer Advocate, Google Cloud Platform Sara Robinson / @SRobTweets ● New York, NY ● Harry Potter aficionado ● Swift fan (Taylor and language)

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3 App Development 3

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Firebase at a glance

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That’s a lot of products! Let’s focus on four

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That’s a lot of products! Let’s focus on four Backed by Google Cloud Storage Export raw data to BigQuery

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Source: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis non erat sem Synchronize data across devices in milliseconds

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// Create a reference let databaseRef = FIRDatabase.database().referenceWithPath("messages") // Save data with setValue() databaseRef.setValue("Hello everyone!") // Sync data databaseRef.observeEventType(.Value, withBlock: { snapshot in print(snapshot.value) }) Store & Sync Data 9

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// Enable disk persistence FIRDatabase.database().persistenceEnabled = true // Specify data that should be pre-fetched and kept up to date databaseRef.keepSynced(true) 10 Handling Offline Data

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11 App Development @SRobTweets Handling offline data: bit.ly/firebase-offline-data

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Source: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis non erat sem

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FIRAuth.auth()?.signInAnonymouslyWithCompletion({ (user, error) in if (error != nil) { print(error) } else { print(user.uid) } }) Anonymous Authentication 13

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14 App Development @SRobTweets Getting Started on iOS - CocoaPods // Podfile pod 'Firebase/Database' pod 'Firebase/Auth' // Terminal $ pod install $ open your-project.xcworkspace // ViewController.swift import Firebase import FirebaseDatabase import FirebaseAuth

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15 App Development 15 15 Live Demo #1

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16 App Development 16 The app

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17 App Development 17 Firebase Storage and Analytics 02 Firebase + Cloud Integrations

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Source: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis non erat sem Easily store and serve files and images, backed by Google Cloud Storage

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// Create a reference let storageRef = FIRStorage.storage().reference() let imageRef = storageRef.child("images/ocean.jpg") // Upload files from data in memory let data: NSData! = … imageRef.putData(data, metadata: nil) { (metadata, error) -> Void in if (error != nil) { // Uh-oh, an error occurred! } else { // Metadata contains data on size, content-type, and download URL. let downloadURL = metadata!.downloadURL } } Uploading Files 19

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// Anyone to read a public image if the file is less than 100kB // Anyone can upload a public file ending in '.txt' match /public/{imageId} { allow read: if resource.size < 100 * 1024; allow write: if imageId.matches(".*\.txt"); } // Require authentication on all internal image reads match /internal/{imageId} { allow read: if request.auth != null; } Storage Security Rules 20

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Free and unlimited analytics, see user behavior from a single dashboard

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22 App Development @SRobTweets Analytics Dashboard - User Engagement Android iOS

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23 App Development @SRobTweets Analytics Dashboard - Device Type Android iOS

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24 App Development @SRobTweets Analytics Dashboard - User Demographics Android iOS

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25 App Development @SRobTweets Custom Events Dashboard

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26 App Development 26 26 Firebase Analytics => BigQuery Export

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BigQuery • Fast: terabytes in seconds • Simple: SQL • Scaleable: From bytes to petabytes • Interoperable: Java, Python, Tableau, R... • Pay only for what you use • Free monthly quota - 1 TB 27

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28 App Development @SRobTweets Firebase Analytics + BigQuery Export your Firebase Analytics data to BigQuery for custom analysis Android data iOS data

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// Create an analytics event FIRAnalytics.logEventWithName("pastryPurchased", parameters: [ "item_type": "cannoli", kFIRParameterValue: "3.5" ] ) Creating an Analytics Event 29

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30 App Development 30 30 Live Demo #2

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31 App Development 31 31 We’ll build....

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32 App Development 32 32 A photo storage app with image detection

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The app Cloud Vision API

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Cloud Vision API Request { "requests":[ { "image": { "source": { "gcs_image_uri": "gs://images/your-photo-uri" } }, "features": [ { "type": "LABEL_DETECTION", "maxResults": 10 }, { "type": "FACE_DETECTION", "maxResults": 10 }, // More feature detection types... ] } ] }

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36 App Development @SRobTweets How will we store our data? User UID Image ID Vision API response object

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37 App Development @SRobTweets CocoaPods Quickstart // Podfile pod 'Firebase/Storage' pod 'Firebase/Analytics' // ViewController.swift import Firebase import FirebaseStorage import FirebaseAnalytics

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// Create a path to upload to Firebase Storage let imagesRef = FIRStorage.storage().referenceForURL("gs://swift-storage.appspot.com").child("imag es/\(userUid)/\(imageId).\(fileExtension)") // Upload to Firebase storage imagesRef.putData(imageData, metadata: imgMetadata) { (metadata, error) -> Void in if (error == nil) { FIRAnalytics.logEventWithName("imgUploadSuccess", parameters: [ "content_type": fileExtension, ]) let gcsUri = imagesRef.description self.createRequest(gcsUri) // Send the image to the Vision API } } Step 1: Upload images to Firebase Storage 38

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// Get the photo metadata we want to save to our Firebase Database let visionApiResponse: AnyObject = responses.rawValue let imageDataforFB = [ "visionResponse": dictResponses, "gcsUri": imgRef ] // Get a unique Firebase Database ref for the image and save it let userImageRef = FIRDatabase.database().referenceWithPath("\(userUid)/images") let uniqueImageRef = userImageRef.childByAutoId() uniqueImageRef.setValue(imageDataforFB) Step 2: Save photo metadata to the Firebase Database 39

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// Listen for items added to our database at /user/images/ userImageRef.observeEventType(.ChildAdded, withBlock: { snapshot in // Get the Firebase Storage reference for the latest image added let imageUrl = snapshot.value?.objectForKey("gcsUri") as! String let storageRef = FIRStorage.storage().referenceForURL(imageUrl) // Download the image as a URL and populate our UICollectionView storageRef.downloadURLWithCompletion({ (url, error) in var currentPhoto = PhotoHolder() currentPhoto.firebaseKey = snapshot.key currentPhoto.url = url self.photoArray.append(currentPhoto) self.collectionView?.reloadData() }) }) Step 3: Listen for new images and add them to the view 40

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Google Cloud Platform ‹#› Google Cloud Platform Compute Connectivity Big Data & ML Storage Developer Tools Mobile Management

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42 App Development @SRobTweets Resources Firebase docs: firebase.google.com/docs [Video] Build a cross-platform Firebase app! bit.ly/zero-to-app Vision API samples: github.com/GoogleCloudPlatform/cloud-vision Join the discussion bit.ly/gcp-slack bit.ly/gcp-github bit.ly/gcp-twitter

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43 App Development 43 Thank You Sara Robinson / @SRobTweets