Add initial test for Felix OSGi implementation

Author: bdhoine

buildSrc/src/main/kotlin/io/opentelemetry/gradle/OtelJavaExtension.kt

@@ -9,4 +9,5 @@ import org.gradle.api.provider.Property
 
 abstract class OtelJavaExtension {
     abstract val moduleName: Property<String>
+    abstract val bundleName: Property<String>
 }

buildSrc/src/main/kotlin/otel.java-conventions.gradle.kts

@@ -94,7 +94,11 @@ tasks {
         "Built-JDK" to System.getProperty("java.version"),
         "Implementation-Title" to project.base.archivesName,
         "Implementation-Version" to project.version,
-        "-exportcontents" to "${otelJava.moduleName.get()}.*"
+        // Add OSGi manifest headers with bnd
+        "-exportcontents" to "${otelJava.moduleName.get()}.*",
+        "Bundle-Name" to otelJava.bundleName,
+        "Bundle-SymbolicName" to "${otelJava.moduleName.get()}.${project.base.archivesName.get()}",
+        "Import-Package" to "io.opentelemetry.api.*;resolution:=optional" // FIXME: should not be optional, dependency should be provided
       )
     }
   }

semconv-incubating/build.gradle.kts

@@ -10,6 +10,7 @@ base {
   archivesName.set("opentelemetry-semconv-incubating")
 }
 otelJava.moduleName.set("io.opentelemetry.semconv.incubating")
+otelJava.bundleName.set("OpenTelemetry - Semantic Conventions Incubating")
 
 dependencies {
   api(project(":semconv"))

semconv/build.gradle.kts

@@ -12,9 +12,13 @@ base {
   archivesName.set("opentelemetry-semconv")
 }
 otelJava.moduleName.set("io.opentelemetry.semconv")
+otelJava.bundleName.set("OpenTelemetry - Semantic Conventions")
 
 dependencies {
   compileOnly("io.opentelemetry:opentelemetry-api")
 
   testImplementation("io.opentelemetry:opentelemetry-api")
+  // FIXME: dependency and version should not be managed here
+  testImplementation("org.apache.felix:org.apache.felix.framework:7.0.5")
+  testImplementation("org.osgi:osgi.core:6.0.0")
 }

semconv/src/test/java/io/opentelemetry/semconv/OSGiBundleTest.java

@@ -0,0 +1,36 @@
+package io.opentelemetry.semconv;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.File;
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.felix.framework.Felix;
+import org.junit.jupiter.api.Test;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleException;
+import org.osgi.framework.Constants;
+import org.osgi.framework.launch.Framework;
+
+class OSGiBundleTest {
+  @Test
+  void bundleIsActive() throws BundleException {
+    Map<String,String> params = new HashMap<String, String>();
+    // FIXME: do not use hardcoded build path
+    params.put(Constants.FRAMEWORK_STORAGE, "build");
+
+    Framework framework = new Felix(params);
+    framework.init();
+    framework.start();
+
+    BundleContext context = framework.getBundleContext();
+    // FIXME: do not use hardcoded bundle path
+    File bundleFile = new File("build/libs/opentelemetry-semconv-1.27.0-alpha-SNAPSHOT.jar");
+
+    Bundle bundle = context.installBundle(bundleFile.toURI().toString());
+    bundle.start();
+
+    assertEquals(Bundle.ACTIVE, bundle.getState());
+  }
+}