feat: v1alpha client generation (#2615)

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [x] Make sure to open an issue as a [bug/issue](https://togithub.com/googleapis/java-bigquerystorage/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)

.github/workflows/hermetic_library_generation.yaml

@@ -24,7 +24,7 @@ env:
 jobs:
   library_generation:
     # skip pull requests coming from a forked repository    
-    if: github.env.REPO_FULL_NAME == github.repository
+    if: ${{ github.event.pull_request.head.repo.full_name == github.repository }}
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4

README.md

@@ -19,7 +19,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file:
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>26.43.0</version>
+      <version>26.44.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
@@ -42,7 +42,7 @@ If you are using Maven without the BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-bigquerystorage</artifactId>
-  <version>3.8.0</version>
+  <version>3.8.1</version>
 </dependency>
 
 ```
@@ -57,13 +57,13 @@ implementation 'com.google.cloud:google-cloud-bigquerystorage'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-bigquerystorage:3.8.0'
+implementation 'com.google.cloud:google-cloud-bigquerystorage:3.8.1'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-bigquerystorage" % "3.8.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-bigquerystorage" % "3.8.1"
 ```
 <!-- {x-version-update-end} -->
 
@@ -219,7 +219,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigquerystorage/java11.html
 [stability-image]: https://img.shields.io/badge/stability-stable-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-bigquerystorage.svg
-[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-bigquerystorage/3.8.0
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-bigquerystorage/3.8.1
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
 [auth-scopes]: https://developers.google.com/identity/protocols/oauth2/scopes
 [predefined-iam-roles]: https://cloud.google.com/iam/docs/understanding-roles#predefined_roles

generation_config.yaml

@@ -21,5 +21,6 @@ libraries:
       recommended_package: com.google.cloud.bigquery.storage.v1
       GAPICs:
           - proto_path: google/cloud/bigquery/storage/v1
+          - proto_path: google/cloud/bigquery/storage/v1alpha
           - proto_path: google/cloud/bigquery/storage/v1beta1
           - proto_path: google/cloud/bigquery/storage/v1beta2

google-cloud-bigquerystorage-bom/pom.xml

@@ -69,6 +69,11 @@
         <artifactId>grpc-google-cloud-bigquerystorage-v1</artifactId>
         <version>3.8.2-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-bigquerystorage-v1:current} -->
       </dependency>
+      <dependency>
+        <groupId>com.google.api.grpc</groupId>
+        <artifactId>grpc-google-cloud-bigquerystorage-v1alpha</artifactId>
+        <version>3.8.2-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-bigquerystorage-v1alpha:current} -->
+      </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-bigquerystorage-v1beta1</artifactId>
@@ -84,6 +89,11 @@
         <artifactId>proto-google-cloud-bigquerystorage-v1</artifactId>
         <version>3.8.2-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-bigquerystorage-v1:current} -->
       </dependency>
+      <dependency>
+        <groupId>com.google.api.grpc</groupId>
+        <artifactId>proto-google-cloud-bigquerystorage-v1alpha</artifactId>
+        <version>3.8.2-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-bigquerystorage-v1alpha:current} -->
+      </dependency>
     </dependencies>
   </dependencyManagement>
 

google-cloud-bigquerystorage/pom.xml

@@ -98,6 +98,10 @@
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-common-protos</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>proto-google-cloud-bigquerystorage-v1alpha</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-cloud-bigquerystorage-v1beta1</artifactId>
@@ -241,6 +245,11 @@
       <groupId>com.google.api.grpc</groupId>
       <artifactId>grpc-google-cloud-bigquerystorage-v1beta1</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>grpc-google-cloud-bigquerystorage-v1alpha</artifactId>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>grpc-google-cloud-bigquerystorage-v1beta2</artifactId>