Remove imported classes and add ci scripts for plugin import check.

Jenkinsfile

@@ -56,7 +56,15 @@ pipeline {
                                 sh 'ls'
                                 sh 'git status'
                             }
-                        }    
+                        }
+
+                        stage('Check agent plugin instrumentation imports') {
+                            steps {
+                                sh './tools/check/agent/plugin/PluginImportedCheck.sh apm-sdk-plugin'
+                                sh './tools/check/agent/plugin/PluginImportedCheck.sh apm-toolkit-activation'
+                                sh './tools/check/agent/plugin/PluginImportedCheck.sh optional-plugins'
+                            }
+                        }
 
                         stage('Test & Report') {
                             steps {

apm-sniffer/apm-sdk-plugin/motan-plugin/src/main/java/org/apache/skywalking/apm/plugin/motan/define/MotanConsumerInstrumentation.java

@@ -18,7 +18,6 @@
 
 package org.apache.skywalking.apm.plugin.motan.define;
 
-import com.weibo.api.motan.rpc.Request;
 import net.bytebuddy.description.method.MethodDescription;
 import net.bytebuddy.matcher.ElementMatcher;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.ConstructorInterceptPoint;
@@ -41,7 +40,7 @@ public class MotanConsumerInstrumentation extends ClassInstanceMethodsEnhancePlu
      */
     private static final String CONSTRUCTOR_INTERCEPT_CLASS = "org.apache.skywalking.apm.plugin.motan.MotanConsumerInterceptor";
     /**
-     * Class that intercept {@link com.weibo.api.motan.rpc.AbstractProvider#call(Request)}.
+     * Class that intercept {@link com.weibo.api.motan.rpc.AbstractProvider#call(com.weibo.api.motan.rpc.Request)}.
      */
     private static final String PROVIDER_INVOKE_INTERCEPT_CLASS = "org.apache.skywalking.apm.plugin.motan.MotanConsumerInterceptor";
 

apm-sniffer/apm-sdk-plugin/mysql-8.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/jdbc/mysql/v8/define/ConnectionImplCreateInstrumentation.java

@@ -19,7 +19,6 @@
 
 package org.apache.skywalking.apm.plugin.jdbc.mysql.v8.define;
 
-import com.mysql.cj.conf.HostInfo;
 import net.bytebuddy.description.method.MethodDescription;
 import net.bytebuddy.matcher.ElementMatcher;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.StaticMethodsInterceptPoint;
@@ -31,7 +30,7 @@
 import static org.apache.skywalking.apm.agent.core.plugin.match.NameMatch.byName;
 
 /**
- * interceptor the method {@link com.mysql.cj.jdbc.ConnectionImpl#getInstance(HostInfo)}
+ * interceptor the method {@link com.mysql.cj.jdbc.ConnectionImpl#getInstance(com.mysql.cj.conf.HostInfo)}
  * instead of {@link com.mysql.cj.jdbc.Driver#connect(String, Properties)}
  * @author: dingshaocheng
  */

apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/servicecomb/define/TransportClientHandlerInstrumentation.java

@@ -18,7 +18,6 @@
 
 package org.apache.skywalking.apm.plugin.servicecomb.define;
 
-import io.servicecomb.core.handler.impl.TransportClientHandler;
 import net.bytebuddy.description.method.MethodDescription;
 import net.bytebuddy.matcher.ElementMatcher;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.ConstructorInterceptPoint;
@@ -30,7 +29,7 @@
 import static net.bytebuddy.matcher.ElementMatchers.named;
 
 /**
- * {@link TransportClientHandlerInstrumentation} represents that skywalking intercept {@link TransportClientHandler} by
+ * {@link TransportClientHandlerInstrumentation} represents that skywalking intercept {@link io.servicecomb.core.handler.impl.TransportClientHandler} by
  * using linkTransportClientHandlerInterceptor
  *
  * @author lytscu

tools/check/agent/plugin/PluginImportedCheck.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# 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.
+# ----------------------------------------------------------------------------
+
+plugin_dir=$1
+for dir in `ls "./apm-sniffer/$plugin_dir/"`; do
+	echo "Scanning $dir"
+	for f in `find ./apm-sniffer/$plugin_dir/$dir -name *Instrumentation.java `; do
+		NUM=`head -400 $f | grep ^import |grep -Ev "^import\s+(static\s+)*net.bytebuddy\\." \
+			| grep -Ev "^import\s+(static\s+)*org.apache.skywalking\\." |grep -Ev "^import\s+(static\s+)*java\\." | wc -l`
+		if [ $NUM -gt 0 ] ; then
+			echo "Plugin: $dir($f),  only allow to import JDK and ByteBuddy classes in Instrumentation definition.";
+			exit 1;
+		fi
+	done
+done