Introduce binary compatibility plugin (#1774)

* Introduce binary compatibility plugin

* Update diffs

3 files changed, 35 insertions, 4 deletions

diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 7a7b8f6a..764d5f48 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -10,4 +10,5 @@ repositories {
 dependencies {
     implementation("com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4")
     implementation("com.github.jengelman.gradle.plugins:shadow:2.0.4")
+    implementation("org.jetbrains.kotlinx:binary-compatibility-validator:0.4.0")
 }
diff --git a/buildSrc/src/main/kotlin/org/jetbrains/binaryCompatibility.kt b/buildSrc/src/main/kotlin/org/jetbrains/binaryCompatibility.kt
new file mode 100644
index 00000000..fb686e1d
--- /dev/null
+++ b/buildSrc/src/main/kotlin/org/jetbrains/binaryCompatibility.kt
@@ -0,0 +1,31 @@
+package org.jetbrains
+
+import kotlinx.validation.ApiValidationExtension
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.configure
+
+internal object BinaryCompatibilityConfig {
+    val ignoredPublications = setOf("kotlinAnalysisIntelliJ", "kotlinAnalysis", "kotlinAnalysisCompiler")
+    val ignoredSubprojects = setOf(
+        "search-component",
+        "compiler-dependency",
+        "intellij-dependency",
+        "kotlin-analysis",
+        "frontend"
+    )
+}
+
+internal fun Project.registerBinaryCompatibilityCheck(publicationName: String) {
+    publicationName.takeIf {
+        it !in BinaryCompatibilityConfig.ignoredPublications
+    }?.let {
+        if (tasks.findByName("apiBuild") == null) {
+            plugins.apply(kotlinx.validation.BinaryCompatibilityValidatorPlugin::class.java)
+            configure<ApiValidationExtension> {
+                ignoredProjects.addAll(
+                    BinaryCompatibilityConfig.ignoredSubprojects.intersect(allprojects.map { it.name })
+                )
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/buildSrc/src/main/kotlin/org/jetbrains/publication.kt b/buildSrc/src/main/kotlin/org/jetbrains/publication.kt
index 6c2f71a6..82102467 100644
--- a/buildSrc/src/main/kotlin/org/jetbrains/publication.kt
+++ b/buildSrc/src/main/kotlin/org/jetbrains/publication.kt
@@ -2,15 +2,13 @@ package org.jetbrains
 
 import com.github.jengelman.gradle.plugins.shadow.ShadowExtension
 import com.jfrog.bintray.gradle.BintrayExtension
+import kotlinx.validation.ApiValidationExtension
 import org.gradle.api.Project
 import org.gradle.api.provider.Provider
 import org.gradle.api.publish.PublishingExtension
 import org.gradle.api.publish.maven.MavenPublication
 import org.gradle.api.publish.maven.tasks.PublishToMavenRepository
-import org.gradle.kotlin.dsl.configure
-import org.gradle.kotlin.dsl.get
-import org.gradle.kotlin.dsl.register
-import org.gradle.kotlin.dsl.withType
+import org.gradle.kotlin.dsl.*
 import org.gradle.plugins.signing.SigningExtension
 import org.jetbrains.DokkaPublicationChannel.*
 import java.net.URI
@@ -47,6 +45,7 @@ fun Project.registerDokkaArtifactPublication(publicationName: String, configure:
     configureBintrayPublicationIfNecessary(publicationName)
     configureSpacePublicationIfNecessary(publicationName)
     createDokkaPublishTaskIfNecessary()
+    registerBinaryCompatibilityCheck(publicationName)
 }
 
 fun Project.configureSpacePublicationIfNecessary(vararg publications: String) {