Allow SDK to run in environments prohibiting use of sun.misc.Unsafe

Some applications run under strict java.security permissions
which do not allow access to sun.misc.Unsafe.

BatchSpanProcessor uses Unsafe via jctools, but has a fallback to
ArrayBlockingQueue. Extending that fallback rule to cover
java security exceptions as well.

sdk/trace-shaded-deps/build.gradle.kts

@@ -26,3 +26,8 @@ tasks {
     into("build/extracted/shadow")
   }
 }
+
+tasks.withType<Test>().configureEach {
+  // JcToolsSecurityManagerTest interferes with JcToolsTest
+  setForkEvery(1)
+}

sdk/trace-shaded-deps/src/main/java/io/opentelemetry/sdk/trace/internal/JcTools.java

@@ -25,8 +25,9 @@ public final class JcTools {
   public static <T> Queue<T> newFixedSizeQueue(int capacity) {
     try {
       return new MpscArrayQueue<>(capacity);
-    } catch (java.lang.NoClassDefFoundError e) {
-      // Happens when modules such as jdk.unsupported are disabled in a custom JRE distribution
+    } catch (java.lang.NoClassDefFoundError | java.lang.ExceptionInInitializerError e) {
+      // Happens when modules such as jdk.unsupported are disabled in a custom JRE distribution,
+      // or a security manager preventing access to Unsafe is installed.
       return new ArrayBlockingQueue<>(capacity);
     }
   }

sdk/trace-shaded-deps/src/test/java/io/opentelemetry/sdk/trace/internal/JcToolsSecurityManagerTest.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.trace.internal;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.Queue;
+import java.util.concurrent.ArrayBlockingQueue;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledOnJre;
+import org.junit.jupiter.api.condition.JRE;
+
+public class JcToolsSecurityManagerTest {
+
+  @Test
+  @EnabledOnJre({JRE.JAVA_8, JRE.JAVA_11, JRE.JAVA_17})
+  void newFixedSizeQueue_SunMiscProhibited() {
+    assertThat(System.getSecurityManager()).isNull();
+    SunMiscProhibitedSecurityManager testingSecurityManager =
+        new SunMiscProhibitedSecurityManager();
+    try {
+      System.setSecurityManager(testingSecurityManager);
+      Queue<Object> queue =
+          AccessController.doPrivileged(
+              (PrivilegedAction<Queue<Object>>) () -> JcTools.newFixedSizeQueue(10));
+      assertThat(queue).isInstanceOf(ArrayBlockingQueue.class);
+    } finally {
+      System.setSecurityManager(null);
+    }
+  }
+}

sdk/trace-shaded-deps/src/test/java/io/opentelemetry/sdk/trace/internal/SunMiscProhibitedSecurityManager.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.trace.internal;
+
+import java.io.FileDescriptor;
+import java.net.InetAddress;
+import java.security.AccessControlException;
+import java.security.Permission;
+
+/**
+ * A security manager which disallows access to classes in sun.misc. Running the tests with a
+ * standard security manager is too invasive.
+ */
+public class SunMiscProhibitedSecurityManager extends SecurityManager {
+
+  public SunMiscProhibitedSecurityManager() {}
+
+  @Override
+  protected Class<?>[] getClassContext() {
+    return super.getClassContext();
+  }
+
+  @Override
+  public void checkPermission(Permission perm) {
+    if (perm.getName().equals("accessClassInPackage.sun.misc")) {
+      throw new AccessControlException("access denied " + perm, perm);
+    }
+  }
+
+  @Override
+  public void checkPermission(Permission perm, Object context) {}
+
+  @Override
+  public void checkCreateClassLoader() {}
+
+  @Override
+  public void checkAccess(Thread t) {}
+
+  @Override
+  public void checkAccess(ThreadGroup g) {}
+
+  @Override
+  public void checkExit(int status) {}
+
+  @Override
+  public void checkExec(String cmd) {}
+
+  @Override
+  public void checkLink(String lib) {}
+
+  @Override
+  public void checkRead(FileDescriptor fd) {}
+
+  @Override
+  public void checkRead(String file) {}
+
+  @Override
+  public void checkRead(String file, Object context) {}
+
+  @Override
+  public void checkWrite(FileDescriptor fd) {}
+
+  @Override
+  public void checkWrite(String file) {}
+
+  @Override
+  public void checkDelete(String file) {}
+
+  @Override
+  public void checkConnect(String host, int port) {}
+
+  @Override
+  public void checkConnect(String host, int port, Object context) {}
+
+  @Override
+  public void checkListen(int port) {}
+
+  @Override
+  public void checkAccept(String host, int port) {}
+
+  @Override
+  public void checkMulticast(InetAddress maddr) {}
+
+  @Override
+  public void checkPropertiesAccess() {}
+
+  @Override
+  public void checkPropertyAccess(String key) {}
+
+  @Override
+  public void checkPrintJobAccess() {}
+
+  @Override
+  public void checkPackageAccess(String pkg) {
+    if (pkg.equals("sun.misc")) {
+      super.checkPackageAccess(pkg);
+    }
+  }
+
+  @Override
+  public void checkPackageDefinition(String pkg) {}
+
+  @Override
+  public void checkSetFactory() {}
+
+  @Override
+  public void checkSecurityAccess(String target) {}
+}

sdk/trace-shaded-deps/src/test/java/io/opentelemetry/sdk/trace/internal/SunMiscProhibitedSecurityManagerTest.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.trace.internal;
+
+import static org.assertj.core.api.Assertions.assertThatNoException;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import java.security.AccessControlException;
+import org.junit.jupiter.api.Test;
+
+class SunMiscProhibitedSecurityManagerTest {
+
+  @Test
+  public void checkPackageAccess_ProhibitsSunMisc() {
+    SunMiscProhibitedSecurityManager sm = new SunMiscProhibitedSecurityManager();
+    assertThatThrownBy(() -> sm.checkPackageAccess("sun.misc"))
+        .isInstanceOf(AccessControlException.class)
+        .hasMessage(
+            "access denied (\"java.lang.RuntimePermission\" \"accessClassInPackage.sun.misc\")");
+  }
+
+  @Test
+  public void checkPackageAccess_ProhibitsSunMiscRuntimePermission() {
+    SunMiscProhibitedSecurityManager sm = new SunMiscProhibitedSecurityManager();
+
+    assertThatThrownBy(
+            () -> sm.checkPermission(new RuntimePermission("accessClassInPackage.sun.misc")))
+        .isInstanceOf(AccessControlException.class)
+        .hasMessage(
+            "access denied (\"java.lang.RuntimePermission\" \"accessClassInPackage.sun.misc\")");
+  }
+
+  @Test
+  public void checkPackageAccess_AllowsOtherPackage() {
+    SunMiscProhibitedSecurityManager sm = new SunMiscProhibitedSecurityManager();
+    assertThatNoException().isThrownBy(() -> sm.checkPackageAccess("io.opentelemetry.sdk"));
+  }
+}