xds: Rename to dynamic reloading cert provider. (#7547)

Co-authored-by: matthewstevenson88 <mattstev@google.com>

xds/src/main/java/io/grpc/xds/internal/certprovider/DynamicReloadingCertificateProvider.java

@@ -37,9 +37,10 @@ import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
-/** Implementation of {@link CertificateProvider} for Zatar cert provider. */
-final class ZatarCertificateProvider extends CertificateProvider {
-  private static final Logger logger = Logger.getLogger(ZatarCertificateProvider.class.getName());
+/** Implementation of {@link CertificateProvider} for dynamic reloading cert provider. */
+final class DynamicReloadingCertificateProvider extends CertificateProvider {
+  private static final Logger logger =
+      Logger.getLogger(DynamicReloadingCertificateProvider.class.getName());
 
   private final SynchronizationContext syncContext;
   private final ScheduledExecutorService scheduledExecutorService;
@@ -52,7 +53,7 @@ final class ZatarCertificateProvider extends CertificateProvider {
   @VisibleForTesting SynchronizationContext.ScheduledHandle scheduledHandle;
   private Path lastModifiedTarget;
 
-  ZatarCertificateProvider(
+  DynamicReloadingCertificateProvider(
       DistributorWatcher watcher,
       boolean notifyCertUpdates,
       String directory,
@@ -75,7 +76,8 @@ final class ZatarCertificateProvider extends CertificateProvider {
   }
 
   private SynchronizationContext createSynchronizationContext(String details) {
-    final InternalLogId logId = InternalLogId.allocate("ZatarCertificateProvider", details);
+    final InternalLogId logId =
+        InternalLogId.allocate("DynamicReloadingCertificateProvider", details);
     return new SynchronizationContext(
         new Thread.UncaughtExceptionHandler() {
           private boolean panicMode;
@@ -182,7 +184,7 @@ final class ZatarCertificateProvider extends CertificateProvider {
     private static final Factory DEFAULT_INSTANCE =
         new Factory() {
           @Override
-          ZatarCertificateProvider create(
+          DynamicReloadingCertificateProvider create(
               DistributorWatcher watcher,
               boolean notifyCertUpdates,
               String directory,
@@ -192,7 +194,7 @@ final class ZatarCertificateProvider extends CertificateProvider {
               long refreshIntervalInSeconds,
               ScheduledExecutorService scheduledExecutorService,
               TimeProvider timeProvider) {
-            return new ZatarCertificateProvider(
+            return new DynamicReloadingCertificateProvider(
                 watcher,
                 notifyCertUpdates,
                 directory,
@@ -209,7 +211,7 @@ final class ZatarCertificateProvider extends CertificateProvider {
       return DEFAULT_INSTANCE;
     }
 
-    abstract ZatarCertificateProvider create(
+    abstract DynamicReloadingCertificateProvider create(
         DistributorWatcher watcher,
         boolean notifyCertUpdates,
         String directory,

xds/src/main/java/io/grpc/xds/internal/certprovider/DynamicReloadingCertificateProviderProvider.java

@@ -28,9 +28,9 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 
 /**
- * Provider of {@link ZatarCertificateProvider}s.
+ * Provider of {@link DynamicReloadingCertificateProvider}s.
  */
-final class ZatarCertificateProviderProvider implements CertificateProviderProvider {
+final class DynamicReloadingCertificateProviderProvider implements CertificateProviderProvider {
 
   private static final String DIRECTORY_KEY = "directory";
   private static final String CERT_FILE_KEY = "certificate-file";
@@ -41,34 +41,34 @@ final class ZatarCertificateProviderProvider implements CertificateProviderProvi
   @VisibleForTesting static final long REFRESH_INTERVAL_DEFAULT = 600L;
 
 
-  static final String ZATAR_PROVIDER_NAME = "gke-cas-certs";
+  static final String DYNAMIC_RELOADING_PROVIDER_NAME = "gke-cas-certs";
 
   static {
     CertificateProviderRegistry.getInstance()
         .register(
-            new ZatarCertificateProviderProvider(
-                ZatarCertificateProvider.Factory.getInstance(),
+            new DynamicReloadingCertificateProviderProvider(
+                DynamicReloadingCertificateProvider.Factory.getInstance(),
                 ScheduledExecutorServiceFactory.DEFAULT_INSTANCE,
                 TimeProvider.SYSTEM_TIME_PROVIDER));
   }
 
-  final ZatarCertificateProvider.Factory zatarCertificateProviderFactory;
+  final DynamicReloadingCertificateProvider.Factory dynamicReloadingCertificateProviderFactory;
   private final ScheduledExecutorServiceFactory scheduledExecutorServiceFactory;
   private final TimeProvider timeProvider;
 
   @VisibleForTesting
-  ZatarCertificateProviderProvider(
-      ZatarCertificateProvider.Factory zatarCertificateProviderFactory,
+  DynamicReloadingCertificateProviderProvider(
+      DynamicReloadingCertificateProvider.Factory dynamicReloadingCertificateProviderFactory,
       ScheduledExecutorServiceFactory scheduledExecutorServiceFactory,
       TimeProvider timeProvider) {
-    this.zatarCertificateProviderFactory = zatarCertificateProviderFactory;
+    this.dynamicReloadingCertificateProviderFactory = dynamicReloadingCertificateProviderFactory;
     this.scheduledExecutorServiceFactory = scheduledExecutorServiceFactory;
     this.timeProvider = timeProvider;
   }
 
   @Override
   public String getName() {
-    return ZATAR_PROVIDER_NAME;
+    return DYNAMIC_RELOADING_PROVIDER_NAME;
   }
 
   @Override
@@ -76,7 +76,7 @@ final class ZatarCertificateProviderProvider implements CertificateProviderProvi
       Object config, CertificateProvider.DistributorWatcher watcher, boolean notifyCertUpdates) {
 
     Config configObj = validateAndTranslateConfig(config);
-    return zatarCertificateProviderFactory.create(
+    return dynamicReloadingCertificateProviderFactory.create(
         watcher,
         notifyCertUpdates,
         configObj.directory,
@@ -117,7 +117,7 @@ final class ZatarCertificateProviderProvider implements CertificateProviderProvi
           ScheduledExecutorService create() {
             return Executors.newSingleThreadScheduledExecutor(
                 new ThreadFactoryBuilder()
-                    .setNameFormat("zatar" + "-%d")
+                    .setNameFormat("dynamicReloading" + "-%d")
                     .setDaemon(true)
                     .build());
           }

xds/src/test/java/io/grpc/xds/internal/certprovider/DynamicReloadingCertificateProviderProviderTest.java

@@ -36,35 +36,40 @@ import org.junit.runners.JUnit4;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
-/** Unit tests for {@link ZatarCertificateProviderProvider}. */
+/** Unit tests for {@link DynamicReloadingCertificateProviderProvider}. */
 @RunWith(JUnit4.class)
-public class ZatarCertificateProviderProviderTest {
+public class DynamicReloadingCertificateProviderProviderTest {
 
-  @Mock ZatarCertificateProvider.Factory zatarCertificateProviderFactory;
-  @Mock private ZatarCertificateProviderProvider.ScheduledExecutorServiceFactory
+  @Mock DynamicReloadingCertificateProvider.Factory dynamicReloadingCertificateProviderFactory;
+  @Mock private DynamicReloadingCertificateProviderProvider.ScheduledExecutorServiceFactory
       scheduledExecutorServiceFactory;
   @Mock private TimeProvider timeProvider;
 
-  private ZatarCertificateProviderProvider provider;
+  private DynamicReloadingCertificateProviderProvider provider;
 
   @Before
   public void setUp() throws IOException {
     MockitoAnnotations.initMocks(this);
     provider =
-        new ZatarCertificateProviderProvider(
-            zatarCertificateProviderFactory, scheduledExecutorServiceFactory, timeProvider);
+        new DynamicReloadingCertificateProviderProvider(
+            dynamicReloadingCertificateProviderFactory,
+            scheduledExecutorServiceFactory,
+            timeProvider);
   }
 
   @Test
   public void providerRegisteredName() {
     CertificateProviderProvider certProviderProvider =
         CertificateProviderRegistry.getInstance()
-            .getProvider(ZatarCertificateProviderProvider.ZATAR_PROVIDER_NAME);
-    assertThat(certProviderProvider).isInstanceOf(ZatarCertificateProviderProvider.class);
-    ZatarCertificateProviderProvider zatarCertificateProviderProvider =
-        (ZatarCertificateProviderProvider) certProviderProvider;
-    assertThat(zatarCertificateProviderProvider.zatarCertificateProviderFactory)
-        .isSameInstanceAs(ZatarCertificateProvider.Factory.getInstance());
+            .getProvider(
+                DynamicReloadingCertificateProviderProvider.DYNAMIC_RELOADING_PROVIDER_NAME);
+    assertThat(certProviderProvider)
+        .isInstanceOf(DynamicReloadingCertificateProviderProvider.class);
+    DynamicReloadingCertificateProviderProvider dynamicReloadingCertificateProviderProvider =
+        (DynamicReloadingCertificateProviderProvider) certProviderProvider;
+    assertThat(
+            dynamicReloadingCertificateProviderProvider.dynamicReloadingCertificateProviderFactory)
+        .isSameInstanceAs(DynamicReloadingCertificateProvider.Factory.getInstance());  
   }
 
   @Test
@@ -72,11 +77,11 @@ public class ZatarCertificateProviderProviderTest {
     CertificateProvider.DistributorWatcher distWatcher =
         new CertificateProvider.DistributorWatcher();
     @SuppressWarnings("unchecked")
-    Map<String, ?> map = (Map<String, ?>) JsonParser.parse(MINIMAL_ZATAR_CONFIG);
+    Map<String, ?> map = (Map<String, ?>) JsonParser.parse(MINIMAL_DYNAMIC_RELOADING_CONFIG);
     ScheduledExecutorService mockService = mock(ScheduledExecutorService.class);
     when(scheduledExecutorServiceFactory.create()).thenReturn(mockService);
     provider.createCertificateProvider(map, distWatcher, true);
-    verify(zatarCertificateProviderFactory, times(1))
+    verify(dynamicReloadingCertificateProviderFactory, times(1))
         .create(
             eq(distWatcher),
             eq(true),
@@ -94,11 +99,11 @@ public class ZatarCertificateProviderProviderTest {
     CertificateProvider.DistributorWatcher distWatcher =
         new CertificateProvider.DistributorWatcher();
     @SuppressWarnings("unchecked")
-    Map<String, ?> map = (Map<String, ?>) JsonParser.parse(FULL_ZATAR_CONFIG);
+    Map<String, ?> map = (Map<String, ?>) JsonParser.parse(FULL_DYNAMIC_RELOADING_CONFIG);
     ScheduledExecutorService mockService = mock(ScheduledExecutorService.class);
     when(scheduledExecutorServiceFactory.create()).thenReturn(mockService);
     provider.createCertificateProvider(map, distWatcher, true);
-    verify(zatarCertificateProviderFactory, times(1))
+    verify(dynamicReloadingCertificateProviderFactory, times(1))
         .create(
             eq(distWatcher),
             eq(true),
@@ -167,7 +172,7 @@ public class ZatarCertificateProviderProviderTest {
     }
   }
 
-  private static final String MINIMAL_ZATAR_CONFIG =
+  private static final String MINIMAL_DYNAMIC_RELOADING_CONFIG =
       "{\n"
           + "        \"directory\": \"/var/run/gke-spiffe/certs/..data\","
           + "        \"certificate-file\": \"certificates.pem\","
@@ -175,7 +180,7 @@ public class ZatarCertificateProviderProviderTest {
           + "        \"ca-certificate-file\": \"ca_certificates.pem\""
           + "      }";
 
-  private static final String FULL_ZATAR_CONFIG =
+  private static final String FULL_DYNAMIC_RELOADING_CONFIG =
       "{\n"
           + "        \"directory\": \"/var/run/gke-spiffe/certs/..data1\","
           + "        \"certificate-file\": \"certificates2.pem\","

xds/src/test/java/io/grpc/xds/internal/certprovider/DynamicReloadingCertificateProviderTest.java

@@ -58,9 +58,9 @@ import org.mockito.ArgumentMatchers;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
-/** Unit tests for {@link ZatarCertificateProvider}. */
+/** Unit tests for {@link DynamicReloadingCertificateProvider}. */
 @RunWith(JUnit4.class)
-public class ZatarCertificateProviderTest {
+public class DynamicReloadingCertificateProviderTest {
   private static final String CERT_FILE = "cert.pem";
   private static final String KEY_FILE = "key.pem";
   private static final String ROOT_FILE = "root.pem";
@@ -72,7 +72,7 @@ public class ZatarCertificateProviderTest {
   @Rule public TemporaryFolder tempFolder = new TemporaryFolder();
   private String symlink;
 
-  private ZatarCertificateProvider provider;
+  private DynamicReloadingCertificateProvider provider;
 
   @Before
   public void setUp() throws IOException {
@@ -83,7 +83,7 @@ public class ZatarCertificateProviderTest {
 
     symlink = new File(tempFolder.getRoot(), "..data").getAbsolutePath();
     provider =
-        new ZatarCertificateProvider(
+        new DynamicReloadingCertificateProvider(
             watcher,
             true,
             symlink,