Add support to ignore specific commits from the release generator. (#5200)

Author: rlazo

buildSrc/src/main/java/com/google/firebase/gradle/plugins/PublishingPlugin.kt

@@ -378,6 +378,7 @@ abstract class PublishingPlugin : Plugin<Project> {
       currentRelease.convention(project.provideProperty("currentRelease"))
       pastRelease.convention(project.provideProperty("pastRelease"))
       printReleaseConfig.convention(project.provideProperty("printOutput"))
+      commitsToIgnoreFile.convention(project.layout.projectDirectory.file("ignoreCommits.txt"))
 
       releaseConfigFile.convention(project.layout.projectDirectory.file(RELEASE_CONFIG_FILE))
       releaseReportMdFile.convention(project.layout.projectDirectory.file(RELEASE_REPORT_MD_FILE))

buildSrc/src/main/java/com/google/firebase/gradle/plugins/ReleaseGenerator.kt

@@ -29,6 +29,8 @@ import org.gradle.api.Project
 import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.provider.Property
 import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.InputFiles
+import org.gradle.api.tasks.Internal
 import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.TaskAction
@@ -120,6 +122,14 @@ abstract class ReleaseGenerator : DefaultTask() {
 
   @get:Optional @get:Input abstract val printReleaseConfig: Property<String>
 
+  @get:Optional @get:InputFiles abstract val commitsToIgnoreFile: RegularFileProperty
+
+  @get:Internal
+  val commitsToIgnore: List<ObjectId>
+    get() =
+      commitsToIgnoreFile.asFileIfExistsOrNull()?.readLines()?.map { ObjectId.fromString(it) }
+        ?: emptyList()
+
   @get:OutputFile abstract val releaseConfigFile: RegularFileProperty
 
   @get:OutputFile abstract val releaseReportMdFile: RegularFileProperty
@@ -224,7 +234,10 @@ abstract class ReleaseGenerator : DefaultTask() {
       .addRange(previousReleaseRef, currentReleaseRef)
       .setMaxCount(10)
       .call()
-      .filter { !it.fullMessage.contains(RELEASE_CHANGE_FILTER) }
+      .filter {
+        !it.fullMessage.contains(RELEASE_CHANGE_FILTER) &&
+          !commitsToIgnore.any { ignore -> it.id == ignore }
+      }
       .isNotEmpty()
 
   private fun getDirChanges(
@@ -238,8 +251,14 @@ abstract class ReleaseGenerator : DefaultTask() {
       .addPath(directory)
       .addRange(previousReleaseRef, currentReleaseRef)
       .call()
-      .filter { !it.fullMessage.contains(RELEASE_CHANGE_FILTER) }
+      .filter {
+        !it.fullMessage.contains(RELEASE_CHANGE_FILTER) &&
+          !commitsToIgnore.any { ignore -> it.id == ignore }
+      }
       .map { CommitDiff.fromRevCommit(it) }
 
   private fun getRelativeDir(project: Project) = project.path.substring(1).replace(':', '/')
 }
+
+fun RegularFileProperty.asFileIfExistsOrNull(): File? =
+  if (isPresent && asFile.get().exists()) asFile.get() else null