DevOps sur Android : from one git push to a Play Store release

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DevOps on Android From one git push to a Play Store release @JeremMartinez www.jeremie-martinez.com

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Processes depend on context

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DevOps n.pr [dɛvops] Promotes a release process which bring together through communication and collaboration both development and operational teams. Play Store

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Continuous integration Automated build Fail fast Constantly tested Constant packaging Easier release

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Source of a solid process

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Packaging Quality Tests Build Push

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Push dev master v21 v22

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Push feature dev master v21 v22

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Push feature dev master v21 v22

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Merge request mandatory At least one reviewer Merge always by the reviewer Branch must always be rebased Push

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Build Push Packaging Quality Tests

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Build 2 builds: debug and release

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Build

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Build Isolated builds Diﬀerent architectures possible Empower developers

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Packaging Quality Tests Build Push

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Tests Yes, even on Android

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JUnit4 public final class LordOfTheRingsTest {    @Before  public void setup() { … }    @Test  public void shouldBringThePrecious() { … } @After  public void tearDown() { … } } Unit tests

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Robolectric public final class LordOfTheRingsTest {    @Before  public void setup() { … }    @Test  public void shouldBringThePrecious() { … } @After  public void tearDown() { … } } Unit tests

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@RunWith(RobolectricTestRunner.class)  @Config(manifest = Config.NONE) Unit tests Robolectric public final class LordOfTheRingsTest {    @Before  public void setup() { … }    @Test  public void shouldBringThePrecious() { … } @After  public void tearDown() { … } }

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Integration tests Espresso or Robotium

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Integration tests Espresso or Robotium

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Integration tests Only test main user-flows

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Integration tests Search Cart Payment Tickets Example for Captain Train

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Tests

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Quality Tests Build Push Packaging

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Quality

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Quality Lint

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Quality Lint Custom

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Quality public class AttrPrefixDetector extends ResourceXmlDetector {    public static final Issue ISSUE = Issue.create("AttrNotPrefixed", //  "You must prefix your custom attr by `ct`", //  "We prefix all our attrs to avoid clashes.", //  Category.TYPOGRAPHY, //  5, // Priority  Severity.WARNING, //  new Implementation(AttrPrefixDetector.class, // Scope.RESOURCE_FILE_SCOPE) // );

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Quality // Only XML files  @Override  public boolean appliesTo(@NonNull Context context,  @NonNull File file) {  return LintUtils.isXmlFile(file);  }

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Quality // Only values folder  @Override  public boolean appliesTo(ResourceFolderType folderType) {  return ResourceFolderType.VALUES == folderType;  }

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Quality // Only attr tag  @Override  public Collection getApplicableElements() {  return Collections.singletonList(TAG_ATTR);  }

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Quality // Only name attribute  @Override  public Collection getApplicableAttributes() {  return Collections.singletonList(ATTR_NAME);  }

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Quality @Override  public void visitElement(XmlContext context, Element element) {  final Attr attributeNode = element.getAttributeNode(ATTR_NAME);  if (attributeNode != null) {  final String val = attributeNode.getValue();  if (!val.startsWith("android:") && !val.startsWith("ct")) {  context.report(ISSUE,  attributeNode,  context.getLocation(attributeNode),  "You must prefix your custom attr by `ct`");  }  }  }

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Quality public final class CaptainRegistry extends IssueRegistry {  @Override  public List getIssues() {  return Collections.singletonList(AttrPrefixDetector.ISSUE);  }  }

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Quality

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Quality Do not underestimate Lint rules

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Packaging Quality Tests Build Push

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Packaging Filter your resources Proguard Assemble Sign your APK Zipalign your APK zipalign -z 4 in.apk out.apk

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Packaging Quality Tests Build Push Continuous integration

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Packaging Quality Tests Build Push Continuous integration

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Continuous integration

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Automate releases in order to deliver quickly, easily and reliably Continuous integration Continuous delivery

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Continuous deployment

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« Too many updates »

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Not enough content

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Can ≠ Want

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But … What is a release ?

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Beta Rollout 5% Rollout 50% Release 100% 1 week 1 week

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Beta Rollout 5% Rollout 50% Release 100% Every 6 weeks On Tuesday

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Continuous integration Continuous delivery dev master v21

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Publish Screenshots Continuous delivery

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Screenshots Don’t neglect screenshots

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Screenshots Automate screenshots

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Home-made with UiAutomator Spoon by Square Screengrab by Fastlane Screenshots

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Publish Continuous delivery Screenshots

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Avoid bad surprises Publish

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Check your permissions Publish

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private static final String[] EXPECTED_PERMISSIONS = { … } @Test  public void shouldMatchPermissions() throws Exception {  final AndroidManifest androidManifest = new AndroidManifest( //  Fs.fileFromPath("build/intermediates/manifests/full/debug/AndroidManifest.xml"), //  null, //  null //  );  final Set requestedPermissions = new HashSet<>(androidManifest.getUsedPermissions());    assertThat(requestedPermissions).containsOnly(EXPECTED_PERMISSIONS);  } Publish

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Tests database upgrades Publish

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testCompile 'org.xerial:sqlite-jdbc:3.8.10.1'  Publish

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@Test  public void upgradeShouldBeTheSameAsCreate() throws Exception {  DbOpenHelper helper = new DbOpenHelper(RuntimeEnvironment.application);    helper.onCreate(newDatabase());  helper.onUpgrade(originDatabase(), 1, CURRENT_VERSION);    Set newSchema = extractSchema(newFile.getAbsolutePath());  Set upgradedSchema = extractSchema(upgradedFile.getAbsolutePath());    assertThat(upgradedSchema).isEqualTo(newSchema);  } Publish

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connection = DriverManager.getConnection(JDBC_SQLITE + url);    tables = connection.getMetaData().getTables(null, null, null, null);  while (tables.next()) {    final String tableType = tables.getString("TABLE_TYPE");  final String tableName = tables.getString("TABLE_NAME");  schema.add(tableType + " " + tableName);  Publish

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columns = connection.getMetaData().getColumns(null, null, tableName, null);  while (columns.next()) {    final String columnName = columns.getString("COLUMN_NAME");  final String columnType = columns.getString("TYPE_NAME");  final String columnNullable = columns.getString("IS_NULLABLE");  final String columnDefault = columns.getString("COLUMN_DF");  schema.add("TABLE " + tableName +  " COLUMN " + columnName + " " + columnType +  " NULLABLE=" + columnNullable +  " DEFAULT=" + columnDefault);  } Publish

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Tables / Views Columns Primary Keys Cross-references Indexes Publish

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Publish

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Publish

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Publish

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Publish

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Publish

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Publish

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Choose your client HTTP - Java - Ruby - Python Publish

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compile 'com.google.apis:google-api-services-androidpublisher:v2-rev20-1.21.0'  Publish

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http = GoogleNetHttpTransport.newTrustedTransport();  json = JacksonFactory.getDefaultInstance();    GoogleCredential credential = new GoogleCredential.Builder().  setTransport(http).  setJsonFactory(json).  setServiceAccountPrivateKeyId(KEY_ID).  setServiceAccountId(SERVICE_ACCOUNT_EMAIL).  setServiceAccountScopes(AndroidPublisherScopes.ANDROIDPUBLISHER).  setServiceAccountPrivateKeyFromPemFile(secretFile).  build();    publisher = new AndroidPublisher.Builder(http, json, credential).  setApplicationName(PACKAGE).  build(); Publish

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AndroidPublisher.Edits edits = publisher.edits();    AppEdit edit = edits.insert(PACKAGE, null).execute();  String id = edit.getId(); Publish

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Listings listings = edits.listings(); Listing listing = new Listing().  setFullDescription(description).  setShortDescription(shortDescription).  setTitle(title);    listings.update(PACKAGE, id, "en_US", listing).execute(); Publish

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Images images = edits.images();    FileContent content = new FileContent(PNG_MIME_TYPE, file);    images.upload(PACKAGE, id, "en_US", "phone5", content).execute(); Publish "tablet7" "tablet9"  "wear"

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  Apks apks = edits.apks();   FileContent apkContent = new FileContent(APK_MIME_TYPE, apkFile);  Apk apk = apks.upload(PACKAGE, id, apkContent).execute();   int version = apk.getVersionCode();  Publish

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  // Assign APK to Track  Tracks tracks = edits.tracks();   Track track = new Track().setVersionCodes(version);   tracks.update(PACKAGE, id, "production", track).execute(); Publish "rollout" "beta" "alpha"

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  // Update APK listing  Apklistings apklistings = edits.apklistings();   ApkListing whatsnew = new ApkListing().setRecentChanges(changes);   apklistings.update(PACKAGE, id, version, "en_US", whatsnew).execute(); Publish

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edits.validate(PACKAGE, id).execute();   edits.commit(PACKAGE, id).execute(); Publish

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Listings Screenshots APK What’s new Track Publish

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Home-made Gradle plugin Jenkins plugin Publish

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Screenshots Continuous delivery Publish

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Publish Screenshots Continuous delivery Packaging Quality Tests Build Push Continuous integration

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Questions ? @JeremMartinez www.jeremie-martinez.com