Setup MiMa checks

.github/workflows/binary-compatibility-checks.yml

@@ -0,0 +1,47 @@
+name: Binary Compatibility
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions: {}
+
+jobs:
+  check-binary-compatibility:
+    name: Check / Binary Compatibility
+    runs-on: ubuntu-22.04
+    if: github.repository == 'apache/pekko-persistence-r2dbc'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: 0
+
+      - name: Setup Java 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 11
+
+      - name: Install sbt
+        uses: sbt/setup-sbt@v1
+
+      - name: Cache Coursier cache
+        uses: coursier/cache-action@v6
+
+      - name: Enable jvm-opts
+        run: cp .jvmopts-ci .jvmopts
+
+      - name: Compile code
+        run: sbt +compile
+
+      - name: Report MiMa Binary Issues
+        run: |-
+          sbt +mimaReportBinaryIssues
+
+      - name: Check correct MiMa filter directories
+        run: |
+          sbt checkMimaFilterDirectories

build.sbt

@@ -40,6 +40,7 @@ inThisBuild(
 lazy val dontPublish = Seq(publish / skip := true, Compile / publishArtifact := false)
 
 lazy val root = (project in file("."))
+  .disablePlugins(MimaPlugin)
   .settings(dontPublish)
   .settings(
     name := "pekko-persistence-r2dbc-root")
@@ -69,12 +70,21 @@ lazy val migration = (project in file("migration"))
     dependencyOverrides ++= Dependencies.pekkoTestDependencyOverrides,
     Test / mainClass := Some("org.apache.pekko.persistence.r2dbc.migration.MigrationTool"),
     Test / run / fork := true,
-    Test / run / javaOptions += "-Dlogback.configurationFile=logback-main.xml")
+    Test / run / javaOptions += "-Dlogback.configurationFile=logback-main.xml",
+    mimaPreviousArtifacts := {
+      CrossVersion.partialVersion(scalaVersion.value) match {
+        case Some((3, _)) =>
+          Set.empty
+        case _ =>
+          mimaPreviousArtifacts.value
+      }
+    })
   .dependsOn(core % "compile->compile;test->test")
 
 lazy val docs = project
   .in(file("docs"))
   .enablePlugins(PekkoParadoxPlugin, ParadoxSitePlugin, ScalaUnidocPlugin)
+  .disablePlugins(MimaPlugin)
   .dependsOn(core, projection, migration)
   .settings(dontPublish)
   .settings(

project/plugins.sbt

@@ -11,6 +11,7 @@ addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.10.0") // for maintenance o
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
 addSbtPlugin("com.lightbend.sbt" % "sbt-java-formatter" % "0.8.0")
 addSbtPlugin("com.github.sbt" % "sbt-unidoc" % "0.5.0")
+addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.4")
 
 // for releasing
 addSbtPlugin("com.github.sbt" % "sbt-dynver" % "5.1.0")

projection/src/main/mima-filters/1.0.x.backwards.excludes/r2dbcsession.excludes

@@ -0,0 +1,20 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Caused by https://github.com/apache/pekko-persistence-r2dbc/pull/101
+ProblemFilters.exclude[IncompatibleSignatureProblem]("org.apache.pekko.projection.r2dbc.javadsl.R2dbcSession.updateOne")
+ProblemFilters.exclude[IncompatibleSignatureProblem]("org.apache.pekko.projection.r2dbc.javadsl.R2dbcSession.update")