Test coverage for H2, H2-in-file and Postgres added, rudimentary doc …

…page

.github/workflows/native-image-tests.yml

@@ -51,9 +51,27 @@ jobs:
         run: |-
           cd native-image-tests/
           sbt nativeImage -Dakka.r2dbc.version=`cat ~/.version`
-          # run the binary
+
+      - name: Akka Persistence native image H2 inmem
+        run: |-
+          cd native-image-tests/
           target/native-image/native-image-tests
 
+      - name: Akka Persistence native image H2 file
+        run: |-
+          cd native-image-tests/
+          target/native-image/native-image-tests -Dconfig.resource=application-h2-file.conf
+
+      - name: Start Postgres DB
+        run: |-
+          docker compose -f docker/docker-compose-postgres.yml up --wait
+          docker exec -i postgres-db psql -U postgres -t < ddl-scripts/create_tables_postgres.sql
+
+      - name: Akka Persistence native image H2
+        run: |-
+          cd native-image-tests/
+          target/native-image/native-image-tests -Dconfig.resource=application-postgres.conf
+
       - name: Email on failure
         if: ${{ failure() }}
         uses: dawidd6/action-send-mail@6063705cefe50cb915fc53bb06d4049cae2953b2

docs/src/main/paradox/index.md

@@ -19,6 +19,7 @@ The Akka Persistence R2DBC plugin allows for using SQL database with R2DBC as a
 * [Cleanup tool](cleanup.md)
 * [Migration tool](migration.md)
 * [Migration Guide](migration-guide.md)
+* [Native Image](native-image.md)
 * [Contributing](contributing.md)
 
 @@@

docs/src/main/paradox/native-image.md

@@ -0,0 +1,11 @@
+# Building Native Images
+
+Building native images with Akka HTTP is supported out of the box for the event sourced journal, snapshot store and 
+durable state store and databases:
+
+* H2 (inmem and file)
+* Postgres
+
+Other databases can likely be used but will require figuring out and adding additional native-image metadata.
+
+For details about building native images with Akka in general, see the @extref[Akka Documentation](akka:additional/native-image.html).

native-image-tests/src/main/resources/application-h2-file.conf

@@ -0,0 +1,9 @@
+akka.persistence.journal.plugin = "akka.persistence.r2dbc.journal"
+akka.persistence.snapshot-store.plugin = "akka.persistence.r2dbc.snapshot"
+akka.persistence.state.plugin = "akka.persistence.r2dbc.state"
+
+akka.persistence.r2dbc.connection-factory = ${akka.persistence.r2dbc.h2}
+akka.persistence.r2dbc.connection-factory = {
+  protocol = "file"
+  database = "/tmp/test-h2-database"
+}

native-image-tests/src/main/resources/application-postgres.conf

@@ -0,0 +1,5 @@
+akka.persistence.journal.plugin = "akka.persistence.r2dbc.journal"
+akka.persistence.snapshot-store.plugin = "akka.persistence.r2dbc.snapshot"
+akka.persistence.state.plugin = "akka.persistence.r2dbc.state"
+
+akka.persistence.r2dbc.connection-factory = ${akka.persistence.r2dbc.postgres}