build: add metadata descriptor to enable kafka connect use the plugin…

… discovery mechanism

generating jars instead of class files in the `distInstall` (just keeping the runtime classpath and not extracting it with the zip plugin).

commons/build.gradle.kts

@@ -95,8 +95,8 @@ dependencies {
 distributions {
   main {
     contents {
-      from("jar")
-      from(configurations.runtimeClasspath.get().map { if (it.isDirectory) it else zipTree(it) })
+      from(tasks.jar)
+      from(configurations.runtimeClasspath.get())
 
       into("/") {
         from("$projectDir")

gcs-connector/build.gradle.kts

@@ -186,12 +186,14 @@ tasks.distZip { dependsOn(":commons:jar") }
 distributions {
   main {
     contents {
-      from("jar")
-      from(configurations.runtimeClasspath.get().map { if (it.isDirectory) it else zipTree(it) })
+      from(tasks.jar)
+      from(configurations.runtimeClasspath.get())
     }
   }
 }
 
+tasks.installDist { dependsOn(":commons:jar") }
+
 publishing {
   publications {
     create<MavenPublication>("publishMavenJavaArtifact") {

gcs-connector/src/main/resources/META-INF/services/org.apache.kafka.connect.sink.SinkConnector

@@ -0,0 +1 @@
+io.aiven.kafka.connect.gcs.GcsSinkConnector

s3-connector/build.gradle.kts

@@ -168,11 +168,13 @@ tasks.distTar { dependsOn(":commons:jar") }
 
 tasks.distZip { dependsOn(":commons:jar") }
 
+tasks.installDist { dependsOn(":commons:jar") }
+
 distributions {
   main {
     contents {
-      from("jar")
-      from(configurations.runtimeClasspath.get().map { if (it.isDirectory) it else zipTree(it) })
+      from(tasks.jar)
+      from(configurations.runtimeClasspath.get())
 
       into("/") {
         from("$projectDir")

s3-connector/src/main/resources/META-INF/services/org.apache.kafka.connect.sink.SinkConnector

@@ -0,0 +1 @@
+io.aiven.kafka.connect.s3.AivenKafkaConnectS3SinkConnector

settings.gradle.kts

@@ -84,4 +84,4 @@ dependencyResolutionManagement {
 
 include("commons")
 include("gcs-connector")
-include("s3-connector")
+include("s3-connector")