build logic cleanup step 2

* drop target-specific convention plugins, as KGP now generates accessors
* use targets helpers in projects
* drop template convention plugins, leave only library - inline usages
* create test aggregate tasks
* reduce usages of OptIns
* use jvm-default=all (easier compatibility in future)
* drop test server completely for now from `rsocket-transport-tests`

Author: whyoleg

build-logic/src/main/kotlin/rsocketbuild.multiplatform-base.gradle.kts

@@ -0,0 +1,132 @@
+/*
+ * Copyright 2015-2024 the original author or authors.
+ *
+ * Licensed 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.
+ */
+
+import org.jetbrains.kotlin.gradle.*
+import org.jetbrains.kotlin.gradle.plugin.*
+import org.jetbrains.kotlin.gradle.plugin.mpp.*
+import org.jetbrains.kotlin.gradle.targets.js.ir.*
+import org.jetbrains.kotlin.gradle.targets.jvm.*
+import org.jetbrains.kotlin.gradle.targets.jvm.tasks.*
+import org.jetbrains.kotlin.gradle.targets.native.tasks.*
+import org.jetbrains.kotlin.gradle.tasks.*
+import rsocketbuild.*
+import rsocketbuild.tests.*
+
+plugins {
+    kotlin("multiplatform")
+}
+
+@OptIn(ExperimentalKotlinGradlePluginApi::class)
+kotlin {
+    compilerOptions {
+        // allWarningsAsErrors.set(true)
+        progressiveMode.set(true)
+        freeCompilerArgs.add("-Xrender-internal-diagnostic-names")
+    }
+
+    sourceSets.configureEach {
+        languageSettings {
+            if (name.contains("test", ignoreCase = true)) {
+                optIn(OptIns.ExperimentalStdlibApi)
+                optIn(OptIns.DelicateCoroutinesApi)
+
+                // rsocket related
+                optIn(OptIns.TransportApi)
+                optIn(OptIns.ExperimentalMetadataApi)
+                optIn(OptIns.ExperimentalStreamsApi)
+                optIn(OptIns.RSocketLoggingApi)
+            }
+        }
+    }
+
+    targets.withType<KotlinJvmTarget>().configureEach {
+        compilations.configureEach {
+            compilerOptions.configure {
+                freeCompilerArgs.add("-Xjvm-default=all")
+            }
+        }
+    }
+
+    // revisit JS block after WASM support
+    targets.withType<KotlinJsIrTarget>().configureEach {
+        whenBrowserConfigured {
+            testTask {
+                useKarma {
+                    useConfigDirectory(rootDir.resolve("gradle/js/karma.config.d"))
+                    useChromeHeadless()
+                }
+            }
+        }
+        whenNodejsConfigured {
+            testTask {
+                useMocha {
+                    timeout = "600s"
+                }
+            }
+        }
+    }
+
+    //setup tests running in RELEASE mode
+    targets.withType<KotlinNativeTarget>().configureEach {
+        binaries.test(listOf(NativeBuildType.RELEASE))
+    }
+    targets.withType<KotlinNativeTargetWithTests<*>>().configureEach {
+        testRuns.create("releaseTest") {
+            setExecutionSourceFrom(binaries.getTest(NativeBuildType.RELEASE))
+        }
+    }
+}
+
+// for CI mainly
+
+registerTestAggregationTask(
+    name = "jvmAllTest",
+    taskDependencies = { tasks.withType<KotlinJvmTest>() },
+    targetFilter = { it.platformType == KotlinPlatformType.jvm }
+)
+
+registerTestAggregationTask(
+    name = "nativeTest",
+    taskDependencies = { tasks.withType<KotlinNativeTest>().matching { it.enabled } },
+    targetFilter = { it.platformType == KotlinPlatformType.native }
+)
+
+listOf("ios", "watchos", "tvos", "macos").forEach { targetGroup ->
+    registerTestAggregationTask(
+        name = "${targetGroup}Test",
+        taskDependencies = {
+            tasks.withType<KotlinNativeTest>().matching {
+                it.enabled && it.name.startsWith(targetGroup, ignoreCase = true)
+            }
+        },
+        targetFilter = {
+            it.platformType == KotlinPlatformType.native && it.name.startsWith(targetGroup, ignoreCase = true)
+        }
+    )
+}
+
+// on build, link even those binaries, which it's not possible to run
+tasks.build {
+    dependsOn(tasks.withType<KotlinNativeLink>())
+}
+
+if (providers.gradleProperty("rsocketbuild.skipTests").map(String::toBoolean).getOrElse(false)) {
+    tasks.withType<AbstractTestTask>().configureEach { onlyIf { false } }
+}
+
+if (providers.gradleProperty("rsocketbuild.skipNativeLink").map(String::toBoolean).getOrElse(false)) {
+    tasks.withType<KotlinNativeLink>().configureEach { onlyIf { false } }
+}

build-logic/src/main/kotlin/rsocketbuild.target.native.all.gradle.kts renamed to build-logic/src/main/kotlin/rsocketbuild.multiplatform-library.gradle.kts

@@ -15,9 +15,10 @@
  */
 
 plugins {
-    id("rsocketbuild.target.native.nix")
+    id("rsocketbuild.multiplatform-base")
+    id("rsocketbuild.publication")
 }
 
 kotlin {
-    mingwX64()
+    explicitApi()
 }