Remove direct dependency of alibaba dubbo (apache#13218)

* Remove direct dependency of alibaba dubbo

* disable in ExtensionLoader

* Fix license

* Fix test

* Fix case

* Fix test

dubbo-common/src/main/java/org/apache/dubbo/common/compact/Dubbo2ActivateUtils.java

@@ -0,0 +1,169 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+package org.apache.dubbo.common.compact;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
+
+public class Dubbo2ActivateUtils {
+    private static final Class<? extends Annotation> ACTIVATE_CLASS;
+    private static final Method GROUP_METHOD;
+    private static final Method VALUE_METHOD;
+    private static final Method BEFORE_METHOD;
+    private static final Method AFTER_METHOD;
+    private static final Method ORDER_METHOD;
+    private static final Method ON_CLASS_METHOD;
+
+    static {
+        ACTIVATE_CLASS = loadClass();
+        GROUP_METHOD = loadMethod("group");
+        VALUE_METHOD = loadMethod("value");
+        BEFORE_METHOD = loadMethod("before");
+        AFTER_METHOD = loadMethod("after");
+        ORDER_METHOD = loadMethod("order");
+        ON_CLASS_METHOD = loadMethod("onClass");
+    }
+
+    @SuppressWarnings("unchecked")
+    private static Class<? extends Annotation> loadClass() {
+        try {
+            Class<?> clazz = Class.forName("com.alibaba.dubbo.common.extension.Activate");
+            if (clazz.isAnnotation()) {
+                return (Class<? extends Annotation>) clazz;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    public static boolean isActivateLoaded() {
+        return ACTIVATE_CLASS != null;
+    }
+
+    public static Class<? extends Annotation> getActivateClass() {
+        return ACTIVATE_CLASS;
+    }
+
+    private static Method loadMethod(String name) {
+        if (ACTIVATE_CLASS == null) {
+            return null;
+        }
+        try {
+            return ACTIVATE_CLASS.getMethod(name);
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    public static String[] getGroup(Annotation annotation) {
+        if (GROUP_METHOD == null) {
+            return null;
+        }
+        try {
+            Object result = GROUP_METHOD.invoke(annotation);
+            if (result instanceof String[]) {
+                return (String[]) result;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    public static String[] getValue(Annotation annotation) {
+        if (VALUE_METHOD == null) {
+            return null;
+        }
+        try {
+            Object result = VALUE_METHOD.invoke(annotation);
+            if (result instanceof String[]) {
+                return (String[]) result;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    public static String[] getBefore(Annotation annotation) {
+        if (BEFORE_METHOD == null) {
+            return null;
+        }
+        try {
+            Object result = BEFORE_METHOD.invoke(annotation);
+            if (result instanceof String[]) {
+                return (String[]) result;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    public static String[] getAfter(Annotation annotation) {
+        if (AFTER_METHOD == null) {
+            return null;
+        }
+        try {
+            Object result = AFTER_METHOD.invoke(annotation);
+            if (result instanceof String[]) {
+                return (String[]) result;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    public static int getOrder(Annotation annotation) {
+        if (ORDER_METHOD == null) {
+            return 0;
+        }
+        try {
+            Object result = ORDER_METHOD.invoke(annotation);
+            if (result instanceof Integer) {
+                return (Integer) result;
+            } else {
+                return 0;
+            }
+        } catch (Throwable e) {
+            return 0;
+        }
+    }
+
+    public static String[] getOnClass(Annotation annotation) {
+        if (ON_CLASS_METHOD == null) {
+            return null;
+        }
+        try {
+            Object result = ON_CLASS_METHOD.invoke(annotation);
+            if (result instanceof String[]) {
+                return (String[]) result;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+}

dubbo-common/src/main/java/org/apache/dubbo/common/compact/Dubbo2CompactUtils.java

@@ -0,0 +1,118 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+package org.apache.dubbo.common.compact;
+
+import org.apache.dubbo.common.constants.CommonConstants;
+import org.apache.dubbo.common.utils.StringUtils;
+
+import java.lang.annotation.Annotation;
+
+public class Dubbo2CompactUtils {
+    private static volatile boolean enabled = true;
+    private static final Class<? extends Annotation> REFERENCE_CLASS;
+    private static final Class<? extends Annotation> SERVICE_CLASS;
+    private static final Class<?> ECHO_SERVICE_CLASS;
+    private static final Class<?> GENERIC_SERVICE_CLASS;
+
+    static {
+        initEnabled();
+        REFERENCE_CLASS = loadAnnotation("com.alibaba.dubbo.config.annotation.Reference");
+        SERVICE_CLASS = loadAnnotation("com.alibaba.dubbo.config.annotation.Service");
+        ECHO_SERVICE_CLASS = loadClass("com.alibaba.dubbo.rpc.service.EchoService");
+        GENERIC_SERVICE_CLASS = loadClass("com.alibaba.dubbo.rpc.service.GenericService");
+    }
+
+    private static void initEnabled() {
+        try {
+            String fromProp = System.getProperty(CommonConstants.DUBBO2_COMPACT_ENABLE);
+            if (StringUtils.isNotEmpty(fromProp)) {
+                enabled = Boolean.parseBoolean(fromProp);
+                return;
+            }
+            String fromEnv = System.getenv(CommonConstants.DUBBO2_COMPACT_ENABLE);
+            if (StringUtils.isNotEmpty(fromEnv)) {
+                enabled = Boolean.parseBoolean(fromEnv);
+                return;
+            }
+            fromEnv = System.getenv(StringUtils.toOSStyleKey(CommonConstants.DUBBO2_COMPACT_ENABLE));
+            enabled = !StringUtils.isNotEmpty(fromEnv) || Boolean.parseBoolean(fromEnv);
+        } catch (Throwable t) {
+            enabled = true;
+        }
+    }
+
+    public static boolean isEnabled() {
+        return enabled;
+    }
+
+    public static void setEnabled(boolean enabled) {
+        Dubbo2CompactUtils.enabled = enabled;
+    }
+
+    private static Class<?> loadClass(String name) {
+        try {
+            return Class.forName(name);
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private static Class<? extends Annotation> loadAnnotation(String name) {
+        try {
+            Class<?> clazz = Class.forName(name);
+            if (clazz.isAnnotation()) {
+                return (Class<? extends Annotation>) clazz;
+            } else {
+                return null;
+            }
+        } catch (Throwable e) {
+            return null;
+        }
+    }
+    public static boolean isReferenceClassLoaded() {
+        return REFERENCE_CLASS != null;
+    }
+
+    public static Class<? extends Annotation> getReferenceClass() {
+        return REFERENCE_CLASS;
+    }
+
+    public static boolean isServiceClassLoaded() {
+        return SERVICE_CLASS != null;
+    }
+
+    public static Class<? extends Annotation> getServiceClass() {
+        return SERVICE_CLASS;
+    }
+
+    public static boolean isEchoServiceClassLoaded() {
+        return ECHO_SERVICE_CLASS != null;
+    }
+
+    public static Class<?> getEchoServiceClass() {
+        return ECHO_SERVICE_CLASS;
+    }
+
+    public static boolean isGenericServiceClassLoaded() {
+        return GENERIC_SERVICE_CLASS != null;
+    }
+
+    public static Class<?> getGenericServiceClass() {
+        return GENERIC_SERVICE_CLASS;
+    }
+}