From 1ab62654f28a42374ab929070eca5a21c02f455a Mon Sep 17 00:00:00 2001
From: Trask Stalnaker <trask.stalnaker@gmail.com>
Date: Sun, 11 Sep 2022 12:17:38 -0700
Subject: [PATCH] Introduce non-alpha bom (#6576)

---
 bom-alpha/build.gradle.kts                    | 17 ++-------
 bom/build.gradle.kts                          | 19 ++++++++++
 bom/gradle.properties                         |  1 +
 .../gradle/OtelBomExtension.kt                | 14 ++++++++
 .../kotlin/otel.bom-conventions.gradle.kts    | 35 +++++++++++++++++++
 settings.gradle.kts                           |  1 +
 6 files changed, 72 insertions(+), 15 deletions(-)
 create mode 100644 bom/build.gradle.kts
 create mode 100644 bom/gradle.properties
 create mode 100644 conventions/src/main/kotlin/io/opentelemetry/instrumentation/gradle/OtelBomExtension.kt
 create mode 100644 conventions/src/main/kotlin/otel.bom-conventions.gradle.kts

diff --git a/bom-alpha/build.gradle.kts b/bom-alpha/build.gradle.kts
index 4f1030cb8d1d..c9722144c17e 100644
--- a/bom-alpha/build.gradle.kts
+++ b/bom-alpha/build.gradle.kts
@@ -1,7 +1,5 @@
 plugins {
-  id("java-platform")
-
-  id("otel.publish-conventions")
+  id("otel.bom-conventions")
 }
 
 description = "OpenTelemetry Instrumentation Bill of Materials (Alpha)"
@@ -19,15 +17,4 @@ dependencies {
   api(platform("io.opentelemetry:opentelemetry-bom-alpha:${otelVersion}-alpha"))
 }
 
-dependencies {
-  constraints {
-    rootProject.subprojects {
-      val proj = this
-      if (!proj.name.startsWith("bom") && proj.name != "javaagent") {
-        proj.plugins.withId("maven-publish") {
-          api(proj)
-        }
-      }
-    }
-  }
-}
+otelBom.projectFilter.set { it.findProperty("otel.stable") != "true" }
diff --git a/bom/build.gradle.kts b/bom/build.gradle.kts
new file mode 100644
index 000000000000..7c5fe1a78f1b
--- /dev/null
+++ b/bom/build.gradle.kts
@@ -0,0 +1,19 @@
+plugins {
+  id("otel.bom-conventions")
+}
+
+description = "OpenTelemetry Instrumentation Bill of Materials"
+group = "io.opentelemetry.instrumentation"
+base.archivesName.set("opentelemetry-instrumentation-bom")
+
+javaPlatform {
+  allowDependencies()
+}
+
+val otelVersion: String by project
+
+dependencies {
+  api(platform("io.opentelemetry:opentelemetry-bom:${otelVersion}"))
+}
+
+otelBom.projectFilter.set { it.findProperty("otel.stable") == "true" }
diff --git a/bom/gradle.properties b/bom/gradle.properties
new file mode 100644
index 000000000000..45d64bec279d
--- /dev/null
+++ b/bom/gradle.properties
@@ -0,0 +1 @@
+otel.stable=true
diff --git a/conventions/src/main/kotlin/io/opentelemetry/instrumentation/gradle/OtelBomExtension.kt b/conventions/src/main/kotlin/io/opentelemetry/instrumentation/gradle/OtelBomExtension.kt
new file mode 100644
index 000000000000..85029753de39
--- /dev/null
+++ b/conventions/src/main/kotlin/io/opentelemetry/instrumentation/gradle/OtelBomExtension.kt
@@ -0,0 +1,14 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.instrumentation.gradle
+
+import org.gradle.api.Project
+import org.gradle.api.provider.Property
+import java.util.function.Predicate
+
+abstract class OtelBomExtension {
+  abstract val projectFilter: Property<Predicate<Project>>
+}
diff --git a/conventions/src/main/kotlin/otel.bom-conventions.gradle.kts b/conventions/src/main/kotlin/otel.bom-conventions.gradle.kts
new file mode 100644
index 000000000000..f863bd539e24
--- /dev/null
+++ b/conventions/src/main/kotlin/otel.bom-conventions.gradle.kts
@@ -0,0 +1,35 @@
+import io.opentelemetry.instrumentation.gradle.OtelBomExtension
+
+plugins {
+  id("otel.publish-conventions")
+  id("java-platform")
+}
+
+if (!project.name.startsWith("bom")) {
+  throw IllegalStateException("Name of BOM projects must start with 'bom'.")
+}
+
+rootProject.subprojects.forEach { subproject ->
+  if (!subproject.name.startsWith("bom")) {
+    evaluationDependsOn(subproject.path)
+  }
+}
+val otelBom = extensions.create<OtelBomExtension>("otelBom")
+
+afterEvaluate {
+  otelBom.projectFilter.finalizeValue()
+  val bomProjects = rootProject.subprojects
+    .sortedBy { it.findProperty("archivesName") as String? }
+    .filter { !it.name.startsWith("bom") }
+    .filter { !it.name.equals("javaagent") }
+    .filter(otelBom.projectFilter.get()::test)
+    .filter { it.plugins.hasPlugin("maven-publish") }
+
+  bomProjects.forEach { project ->
+    dependencies {
+      constraints {
+        api(project)
+      }
+    }
+  }
+}
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 0ec769f07868..4ea320e69fd5 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -106,6 +106,7 @@ include(":javaagent-tooling")
 include(":javaagent-tooling:javaagent-tooling-java9")
 include(":javaagent")
 
+include(":bom")
 include(":bom-alpha")
 include(":instrumentation-api")
 include(":instrumentation-api-semconv")