diff --git a/CHANGELOG.md b/CHANGELOG.md index be5283f627e59..ef552d3b093a9 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -3,6 +3,91 @@ All notable changes to this project are documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). See the [CONTRIBUTING guide](./CONTRIBUTING.md#Changelog) for instructions on how to add changelog entries. +## [Unreleased 3.0] +### Added +- Support for HTTP/2 (server-side) ([#3847](https://github.com/opensearch-project/OpenSearch/pull/3847)) +- Add getter for path field in NestedQueryBuilder ([#4636](https://github.com/opensearch-project/OpenSearch/pull/4636)) +- Allow mmap to use new JDK-19 preview APIs in Apache Lucene 9.4+ ([#5151](https://github.com/opensearch-project/OpenSearch/pull/5151)) +- Add events correlation engine plugin ([#6854](https://github.com/opensearch-project/OpenSearch/issues/6854)) +- Implement on behalf of token passing for extensions ([#8679](https://github.com/opensearch-project/OpenSearch/pull/8679), [#10664](https://github.com/opensearch-project/OpenSearch/pull/10664)) +- Provide service accounts tokens to extensions ([#9618](https://github.com/opensearch-project/OpenSearch/pull/9618)) +- [AdmissionControl] Added changes for AdmissionControl Interceptor and AdmissionControlService for RateLimiting ([#9286](https://github.com/opensearch-project/OpenSearch/pull/9286)) +- GHA to verify checklist items completion in PR descriptions ([#10800](https://github.com/opensearch-project/OpenSearch/pull/10800)) +- Allow to pass the list settings through environment variables (like [], ["a", "b", "c"], ...) ([#10625](https://github.com/opensearch-project/OpenSearch/pull/10625)) +- [Admission Control] Integrate CPU AC with ResourceUsageCollector and add CPU AC stats to nodes/stats ([#10887](https://github.com/opensearch-project/OpenSearch/pull/10887)) + +### Dependencies +- Bump `log4j-core` from 2.18.0 to 2.19.0 +- Bump `forbiddenapis` from 3.3 to 3.4 +- Bump `avro` from 1.11.1 to 1.11.2 +- Bump `woodstox-core` from 6.3.0 to 6.3.1 +- Bump `xmlbeans` from 5.1.0 to 5.1.1 ([#4354](https://github.com/opensearch-project/OpenSearch/pull/4354)) +- Bump `reactor-netty-core` from 1.0.19 to 1.0.22 ([#4447](https://github.com/opensearch-project/OpenSearch/pull/4447)) +- Bump `reactive-streams` from 1.0.3 to 1.0.4 ([#4488](https://github.com/opensearch-project/OpenSearch/pull/4488)) +- Bump `jempbox` from 1.8.16 to 1.8.17 ([#4550](https://github.com/opensearch-project/OpenSearch/pull/4550)) +- Update to Gradle 7.6 and JDK-19 ([#4973](https://github.com/opensearch-project/OpenSearch/pull/4973)) +- Update Apache Lucene to 9.5.0-snapshot-d5cef1c ([#5570](https://github.com/opensearch-project/OpenSearch/pull/5570)) +- Bump `maven-model` from 3.6.2 to 3.8.6 ([#5599](https://github.com/opensearch-project/OpenSearch/pull/5599)) +- Bump `maxmind-db` from 2.1.0 to 3.0.0 ([#5601](https://github.com/opensearch-project/OpenSearch/pull/5601)) +- Bump `wiremock-jre8-standalone` from 2.33.2 to 2.35.0 +- Bump `gson` from 2.10 to 2.10.1 +- Bump `com.google.code.gson:gson` from 2.10 to 2.10.1 +- Bump `com.maxmind.geoip2:geoip2` from 4.0.0 to 4.0.1 +- Bump `com.avast.gradle:gradle-docker-compose-plugin` from 0.16.11 to 0.16.12 +- Bump `org.apache.commons:commons-configuration2` from 2.8.0 to 2.9.0 +- Bump `com.netflix.nebula:nebula-publishing-plugin` from 19.2.0 to 20.3.0 +- Bump `io.opencensus:opencensus-api` from 0.18.0 to 0.31.1 ([#7291](https://github.com/opensearch-project/OpenSearch/pull/7291)) +- OpenJDK Update (April 2023 Patch releases) ([#7344](https://github.com/opensearch-project/OpenSearch/pull/7344) +- Bump `com.google.http-client:google-http-client:1.43.2` from 1.42.0 to 1.43.2 ([7928](https://github.com/opensearch-project/OpenSearch/pull/7928))) +- Add Opentelemetry dependencies ([#7543](https://github.com/opensearch-project/OpenSearch/issues/7543)) +- Bump `org.bouncycastle:bcprov-jdk15on` to `org.bouncycastle:bcprov-jdk15to18` version 1.75 ([#8247](https://github.com/opensearch-project/OpenSearch/pull/8247)) +- Bump `org.bouncycastle:bcmail-jdk15on` to `org.bouncycastle:bcmail-jdk15to18` version 1.75 ([#8247](https://github.com/opensearch-project/OpenSearch/pull/8247)) +- Bump `org.bouncycastle:bcpkix-jdk15on` to `org.bouncycastle:bcpkix-jdk15to18` version 1.75 ([#8247](https://github.com/opensearch-project/OpenSearch/pull/8247)) +- Bump JNA version from 5.5 to 5.13 ([#9963](https://github.com/opensearch-project/OpenSearch/pull/9963)) +- Bump `org.eclipse.jgit` from 6.5.0 to 6.7.0 ([#10147](https://github.com/opensearch-project/OpenSearch/pull/10147)) +- Bump OpenTelemetry from 1.30.1 to 1.31.0 ([#10617](https://github.com/opensearch-project/OpenSearch/pull/10617)) +- Bump OpenTelemetry from 1.31.0 to 1.32.0 and OpenTelemetry Semconv from 1.21.0-alpha to 1.23.1-alpha ([#11305](https://github.com/opensearch-project/OpenSearch/pull/11305)) + +### Changed +- [CCR] Add getHistoryOperationsFromTranslog method to fetch the history snapshot from translogs ([#3948](https://github.com/opensearch-project/OpenSearch/pull/3948)) +- Relax visibility of the HTTP_CHANNEL_KEY and HTTP_SERVER_CHANNEL_KEY to make it possible for the plugins to access associated Netty4HttpChannel / Netty4HttpServerChannel instance ([#4638](https://github.com/opensearch-project/OpenSearch/pull/4638)) +- Migrate client transports to Apache HttpClient / Core 5.x ([#4459](https://github.com/opensearch-project/OpenSearch/pull/4459)) +- Change http code on create index API with bad input raising NotXContentException from 500 to 400 ([#4773](https://github.com/opensearch-project/OpenSearch/pull/4773)) +- Improve summary error message for invalid setting updates ([#4792](https://github.com/opensearch-project/OpenSearch/pull/4792)) +- Return 409 Conflict HTTP status instead of 503 on failure to concurrently execute snapshots ([#8986](https://github.com/opensearch-project/OpenSearch/pull/5855)) +- Add task completion count in search backpressure stats API ([#10028](https://github.com/opensearch-project/OpenSearch/pull/10028/)) +- Deprecate CamelCase `PathHierarchy` tokenizer name in favor to lowercase `path_hierarchy` ([#10894](https://github.com/opensearch-project/OpenSearch/pull/10894)) +- Switched to more reliable OpenSearch Lucene snapshot location([#11728](https://github.com/opensearch-project/OpenSearch/pull/11728)) +- Added support for Google Application Default Credentials in repository-gcs ([#8394](https://github.com/opensearch-project/OpenSearch/pull/8394)) + +### Deprecated + +### Removed +- Remove deprecated code to add node name into log pattern of log4j property file ([#4568](https://github.com/opensearch-project/OpenSearch/pull/4568)) +- Unused object and import within TransportClusterAllocationExplainAction ([#4639](https://github.com/opensearch-project/OpenSearch/pull/4639)) +- Remove LegacyESVersion.V_7_0_* and V_7_1_* Constants ([#2768](https://https://github.com/opensearch-project/OpenSearch/pull/2768)) +- Remove LegacyESVersion.V_7_2_ and V_7_3_ Constants ([#4702](https://github.com/opensearch-project/OpenSearch/pull/4702)) +- Always auto release the flood stage block ([#4703](https://github.com/opensearch-project/OpenSearch/pull/4703)) +- Remove LegacyESVersion.V_7_4_ and V_7_5_ Constants ([#4704](https://github.com/opensearch-project/OpenSearch/pull/4704)) +- Remove Legacy Version support from Snapshot/Restore Service ([#4728](https://github.com/opensearch-project/OpenSearch/pull/4728)) +- Remove deprecated serialization logic from pipeline aggs ([#4847](https://github.com/opensearch-project/OpenSearch/pull/4847)) +- Remove unused private methods ([#4926](https://github.com/opensearch-project/OpenSearch/pull/4926)) +- Remove LegacyESVersion.V_7_8_ and V_7_9_ Constants ([#4855](https://github.com/opensearch-project/OpenSearch/pull/4855)) +- Remove LegacyESVersion.V_7_6_ and V_7_7_ Constants ([#4837](https://github.com/opensearch-project/OpenSearch/pull/4837)) +- Remove LegacyESVersion.V_7_10_ Constants ([#5018](https://github.com/opensearch-project/OpenSearch/pull/5018)) +- Remove Version.V_1_ Constants ([#5021](https://github.com/opensearch-project/OpenSearch/pull/5021)) +- Remove custom Map, List and Set collection classes ([#6871](https://github.com/opensearch-project/OpenSearch/pull/6871)) + +### Fixed +- Fix 'org.apache.hc.core5.http.ParseException: Invalid protocol version' under JDK 16+ ([#4827](https://github.com/opensearch-project/OpenSearch/pull/4827)) +- Fix compression support for h2c protocol ([#4944](https://github.com/opensearch-project/OpenSearch/pull/4944)) +- Don't over-allocate in HeapBufferedAsyncEntityConsumer in order to consume the response ([#9993](https://github.com/opensearch-project/OpenSearch/pull/9993)) +- Update supported version for max_shard_size parameter in Shrink API ([#11439](https://github.com/opensearch-project/OpenSearch/pull/11439)) +- Fix typo in API annotation check message ([11836](https://github.com/opensearch-project/OpenSearch/pull/11836)) +- Update supported version for must_exist parameter in update aliases API ([#11872](https://github.com/opensearch-project/OpenSearch/pull/11872)) + +### Security + ## [Unreleased 2.x] ### Added - [Admission control] Add Resource usage collector service and resource usage tracker ([#10695](https://github.com/opensearch-project/OpenSearch/pull/10695)) diff --git a/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleApplicationDefaultCredentials.java b/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleApplicationDefaultCredentials.java new file mode 100644 index 0000000000000..5002ab9a2e704 --- /dev/null +++ b/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleApplicationDefaultCredentials.java @@ -0,0 +1,33 @@ +/* + * SPDX-License-Identifier: Apache-2.0 + * + * The OpenSearch Contributors require contributions made to + * this file be licensed under the Apache-2.0 license or a + * compatible open source license. + */ + +package org.opensearch.repositories.gcs; + +import com.google.auth.oauth2.GoogleCredentials; +import org.apache.logging.log4j.LogManager; +import org.apache.logging.log4j.Logger; + +import java.io.IOException; + +/** + * This class facilitates to fetch Application Default Credentials + * see How Application Default Credentials works + */ +public class GoogleApplicationDefaultCredentials { + private static final Logger logger = LogManager.getLogger(GoogleApplicationDefaultCredentials.class); + + public GoogleCredentials get() { + GoogleCredentials credentials = null; + try { + credentials = SocketAccess.doPrivilegedIOException(GoogleCredentials::getApplicationDefault); + } catch (IOException e) { + logger.error("Failed to retrieve \"Application Default Credentials\"", e); + } + return credentials; + } +} diff --git a/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleCloudStorageService.java b/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleCloudStorageService.java index c9ebb3acaf3e5..83a4146c99b99 100644 --- a/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleCloudStorageService.java +++ b/plugins/repository-gcs/src/main/java/org/opensearch/repositories/gcs/GoogleCloudStorageService.java @@ -36,6 +36,7 @@ import com.google.api.client.http.HttpRequestInitializer; import com.google.api.client.http.HttpTransport; import com.google.api.client.http.javanet.NetHttpTransport; +import com.google.auth.oauth2.GoogleCredentials; import com.google.auth.oauth2.ServiceAccountCredentials; import com.google.cloud.ServiceOptions; import com.google.cloud.http.HttpTransportOptions; @@ -70,6 +71,16 @@ public class GoogleCloudStorageService { */ private volatile Map clientCache = emptyMap(); + final private GoogleApplicationDefaultCredentials googleApplicationDefaultCredentials; + + public GoogleCloudStorageService() { + this.googleApplicationDefaultCredentials = new GoogleApplicationDefaultCredentials(); + } + + public GoogleCloudStorageService(GoogleApplicationDefaultCredentials googleApplicationDefaultCredentials) { + this.googleApplicationDefaultCredentials = googleApplicationDefaultCredentials; + } + /** * Refreshes the client settings and clears the client cache. Subsequent calls to * {@code GoogleCloudStorageService#client} will return new clients constructed @@ -213,10 +224,11 @@ StorageOptions createStorageOptions( storageOptionsBuilder.setProjectId(clientSettings.getProjectId()); } if (clientSettings.getCredential() == null) { - logger.warn( - "\"Application Default Credentials\" are not supported out of the box." - + " Additional file system permissions have to be granted to the plugin." - ); + logger.info("\"Application Default Credentials\" will be in use"); + final GoogleCredentials credentials = googleApplicationDefaultCredentials.get(); + if (credentials != null) { + storageOptionsBuilder.setCredentials(credentials); + } } else { ServiceAccountCredentials serviceAccountCredentials = clientSettings.getCredential(); // override token server URI diff --git a/plugins/repository-gcs/src/test/java/org/opensearch/repositories/gcs/GoogleCloudStorageServiceTests.java b/plugins/repository-gcs/src/test/java/org/opensearch/repositories/gcs/GoogleCloudStorageServiceTests.java index a531555debefb..58e412684ed5a 100644 --- a/plugins/repository-gcs/src/test/java/org/opensearch/repositories/gcs/GoogleCloudStorageServiceTests.java +++ b/plugins/repository-gcs/src/test/java/org/opensearch/repositories/gcs/GoogleCloudStorageServiceTests.java @@ -33,8 +33,10 @@ package org.opensearch.repositories.gcs; import com.google.auth.Credentials; +import com.google.auth.oauth2.GoogleCredentials; import com.google.cloud.http.HttpTransportOptions; import com.google.cloud.storage.Storage; +import com.google.cloud.storage.StorageOptions; import org.opensearch.common.settings.MockSecureSettings; import org.opensearch.common.settings.Setting; import org.opensearch.common.settings.Settings; @@ -42,30 +44,38 @@ import org.opensearch.core.common.bytes.BytesReference; import org.opensearch.core.xcontent.XContentBuilder; import org.opensearch.test.OpenSearchTestCase; +import org.hamcrest.MatcherAssert; import org.hamcrest.Matchers; +import java.io.IOException; +import java.net.Proxy; +import java.net.URI; +import java.net.URISyntaxException; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.util.Base64; import java.util.Locale; import java.util.UUID; +import org.mockito.Mockito; + import static org.opensearch.common.xcontent.XContentFactory.jsonBuilder; import static org.hamcrest.Matchers.containsString; import static org.hamcrest.Matchers.equalTo; public class GoogleCloudStorageServiceTests extends OpenSearchTestCase { + final TimeValue connectTimeValue = TimeValue.timeValueNanos(randomIntBetween(0, 2000000)); + final TimeValue readTimeValue = TimeValue.timeValueNanos(randomIntBetween(0, 2000000)); + final String applicationName = randomAlphaOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT); + final String endpoint = randomFrom("http://", "https://") + + randomFrom("www.opensearch.org", "www.googleapis.com", "localhost/api", "google.com/oauth") + + ":" + + randomIntBetween(1, 65535); + final String projectIdName = randomAlphaOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT); + public void testClientInitializer() throws Exception { final String clientName = randomAlphaOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT); - final TimeValue connectTimeValue = TimeValue.timeValueNanos(randomIntBetween(0, 2000000)); - final TimeValue readTimeValue = TimeValue.timeValueNanos(randomIntBetween(0, 2000000)); - final String applicationName = randomAlphaOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT); - final String endpoint = randomFrom("http://", "https://") - + randomFrom("www.opensearch.org", "www.googleapis.com", "localhost/api", "google.com/oauth") - + ":" - + randomIntBetween(1, 65535); - final String projectIdName = randomAlphaOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT); final Settings settings = Settings.builder() .put( GoogleCloudStorageClientSettings.CONNECT_TIMEOUT_SETTING.getConcreteSettingForNamespace(clientName).getKey(), @@ -82,31 +92,35 @@ public void testClientInitializer() throws Exception { .put(GoogleCloudStorageClientSettings.ENDPOINT_SETTING.getConcreteSettingForNamespace(clientName).getKey(), endpoint) .put(GoogleCloudStorageClientSettings.PROJECT_ID_SETTING.getConcreteSettingForNamespace(clientName).getKey(), projectIdName) .build(); - final GoogleCloudStorageService service = new GoogleCloudStorageService(); + GoogleCredentials mockGoogleCredentials = Mockito.mock(GoogleCredentials.class); + GoogleApplicationDefaultCredentials mockDefaultCredentials = Mockito.mock(GoogleApplicationDefaultCredentials.class); + Mockito.when(mockDefaultCredentials.get()).thenReturn(mockGoogleCredentials); + + final GoogleCloudStorageService service = new GoogleCloudStorageService(mockDefaultCredentials); service.refreshAndClearCache(GoogleCloudStorageClientSettings.load(settings)); GoogleCloudStorageOperationsStats statsCollector = new GoogleCloudStorageOperationsStats("bucket"); final IllegalArgumentException e = expectThrows( IllegalArgumentException.class, () -> service.client("another_client", "repo", statsCollector) ); - assertThat(e.getMessage(), Matchers.startsWith("Unknown client name")); + MatcherAssert.assertThat(e.getMessage(), Matchers.startsWith("Unknown client name")); assertSettingDeprecationsAndWarnings( new Setting[] { GoogleCloudStorageClientSettings.APPLICATION_NAME_SETTING.getConcreteSettingForNamespace(clientName) } ); final Storage storage = service.client(clientName, "repo", statsCollector); - assertThat(storage.getOptions().getApplicationName(), Matchers.containsString(applicationName)); - assertThat(storage.getOptions().getHost(), Matchers.is(endpoint)); - assertThat(storage.getOptions().getProjectId(), Matchers.is(projectIdName)); - assertThat(storage.getOptions().getTransportOptions(), Matchers.instanceOf(HttpTransportOptions.class)); - assertThat( + MatcherAssert.assertThat(storage.getOptions().getApplicationName(), Matchers.containsString(applicationName)); + MatcherAssert.assertThat(storage.getOptions().getHost(), Matchers.is(endpoint)); + MatcherAssert.assertThat(storage.getOptions().getProjectId(), Matchers.is(projectIdName)); + MatcherAssert.assertThat(storage.getOptions().getTransportOptions(), Matchers.instanceOf(HttpTransportOptions.class)); + MatcherAssert.assertThat( ((HttpTransportOptions) storage.getOptions().getTransportOptions()).getConnectTimeout(), Matchers.is((int) connectTimeValue.millis()) ); - assertThat( + MatcherAssert.assertThat( ((HttpTransportOptions) storage.getOptions().getTransportOptions()).getReadTimeout(), Matchers.is((int) readTimeValue.millis()) ); - assertThat(storage.getOptions().getCredentials(), Matchers.nullValue(Credentials.class)); + MatcherAssert.assertThat(storage.getOptions().getCredentials(), Matchers.instanceOf(Credentials.class)); } public void testReinitClientSettings() throws Exception { @@ -122,33 +136,33 @@ public void testReinitClientSettings() throws Exception { final GoogleCloudStorageService storageService = plugin.storageService; GoogleCloudStorageOperationsStats statsCollector = new GoogleCloudStorageOperationsStats("bucket"); final Storage client11 = storageService.client("gcs1", "repo1", statsCollector); - assertThat(client11.getOptions().getProjectId(), equalTo("project_gcs11")); + MatcherAssert.assertThat(client11.getOptions().getProjectId(), equalTo("project_gcs11")); final Storage client12 = storageService.client("gcs2", "repo2", statsCollector); - assertThat(client12.getOptions().getProjectId(), equalTo("project_gcs12")); + MatcherAssert.assertThat(client12.getOptions().getProjectId(), equalTo("project_gcs12")); // client 3 is missing final IllegalArgumentException e1 = expectThrows( IllegalArgumentException.class, () -> storageService.client("gcs3", "repo3", statsCollector) ); - assertThat(e1.getMessage(), containsString("Unknown client name [gcs3].")); + MatcherAssert.assertThat(e1.getMessage(), containsString("Unknown client name [gcs3].")); // update client settings plugin.reload(settings2); // old client 1 not changed - assertThat(client11.getOptions().getProjectId(), equalTo("project_gcs11")); + MatcherAssert.assertThat(client11.getOptions().getProjectId(), equalTo("project_gcs11")); // new client 1 is changed final Storage client21 = storageService.client("gcs1", "repo1", statsCollector); - assertThat(client21.getOptions().getProjectId(), equalTo("project_gcs21")); + MatcherAssert.assertThat(client21.getOptions().getProjectId(), equalTo("project_gcs21")); // old client 2 not changed - assertThat(client12.getOptions().getProjectId(), equalTo("project_gcs12")); + MatcherAssert.assertThat(client12.getOptions().getProjectId(), equalTo("project_gcs12")); // new client2 is gone final IllegalArgumentException e2 = expectThrows( IllegalArgumentException.class, () -> storageService.client("gcs2", "repo2", statsCollector) ); - assertThat(e2.getMessage(), containsString("Unknown client name [gcs2].")); + MatcherAssert.assertThat(e2.getMessage(), containsString("Unknown client name [gcs2].")); // client 3 emerged final Storage client23 = storageService.client("gcs3", "repo3", statsCollector); - assertThat(client23.getOptions().getProjectId(), equalTo("project_gcs23")); + MatcherAssert.assertThat(client23.getOptions().getProjectId(), equalTo("project_gcs23")); } } @@ -193,4 +207,72 @@ public void testToTimeout() { assertEquals(-1, GoogleCloudStorageService.toTimeout(TimeValue.ZERO).intValue()); assertEquals(0, GoogleCloudStorageService.toTimeout(TimeValue.MINUS_ONE).intValue()); } + + /** + * The following method test the Google Application Default Credential instead of + * using service account file. + * Considered use of JUnit Mocking due to static method GoogleCredentials.getApplicationDefault + * and avoiding environment variables to set which later use GCE. + * @throws Exception + */ + public void testApplicationDefaultCredential() throws Exception { + GoogleCloudStorageClientSettings settings = getGCSClientSettingsWithoutCredentials(); + GoogleCredentials mockGoogleCredentials = Mockito.mock(GoogleCredentials.class); + HttpTransportOptions mockHttpTransportOptions = Mockito.mock(HttpTransportOptions.class); + GoogleApplicationDefaultCredentials mockDefaultCredentials = Mockito.mock(GoogleApplicationDefaultCredentials.class); + Mockito.when(mockDefaultCredentials.get()).thenReturn(mockGoogleCredentials); + + GoogleCloudStorageService service = new GoogleCloudStorageService(mockDefaultCredentials); + StorageOptions storageOptions = service.createStorageOptions(settings, mockHttpTransportOptions); + assertNotNull(storageOptions); + assertEquals(storageOptions.getCredentials().toString(), mockGoogleCredentials.toString()); + } + + /** + * The application default credential throws exception when there are + * no Environment Variables provided or Google Compute Engine is not running + * @throws Exception + */ + public void testApplicationDefaultCredentialsWhenNoSettingProvided() throws Exception { + GoogleCloudStorageClientSettings settings = getGCSClientSettingsWithoutCredentials(); + HttpTransportOptions mockHttpTransportOptions = Mockito.mock(HttpTransportOptions.class); + GoogleCloudStorageService service = new GoogleCloudStorageService(); + StorageOptions storageOptions = service.createStorageOptions(settings, mockHttpTransportOptions); + + Exception exception = assertThrows(IOException.class, GoogleCredentials::getApplicationDefault); + assertNotNull(storageOptions); + assertNull(storageOptions.getCredentials()); + MatcherAssert.assertThat(exception.getMessage(), containsString("The Application Default Credentials are not available")); + } + + /** + * The application default credential throws IOException when it is + * used without GoogleCloudStorageService + */ + public void testDefaultCredentialsThrowsExceptionWithoutGCStorageService() { + GoogleApplicationDefaultCredentials googleApplicationDefaultCredentials = new GoogleApplicationDefaultCredentials(); + GoogleCredentials credentials = googleApplicationDefaultCredentials.get(); + assertNull(credentials); + Exception exception = assertThrows(IOException.class, GoogleCredentials::getApplicationDefault); + MatcherAssert.assertThat(exception.getMessage(), containsString("The Application Default Credentials are not available")); + } + + /** + * This is a helper method to provide GCS Client settings without credentials + * @return GoogleCloudStorageClientSettings + * @throws URISyntaxException + */ + private GoogleCloudStorageClientSettings getGCSClientSettingsWithoutCredentials() throws URISyntaxException { + return new GoogleCloudStorageClientSettings( + null, + endpoint, + projectIdName, + connectTimeValue, + readTimeValue, + applicationName, + new URI(""), + new ProxySettings(Proxy.Type.DIRECT, null, 0, null, null) + ); + } + }