| /* |
| * 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.skywalking.oap.server.core.analysis; |
| |
| import java.lang.annotation.Annotation; |
| import org.apache.skywalking.oap.server.core.UnexpectedException; |
| import org.apache.skywalking.oap.server.core.analysis.worker.ManagementStreamProcessor; |
| import org.apache.skywalking.oap.server.core.analysis.worker.MetricsStreamProcessor; |
| import org.apache.skywalking.oap.server.core.analysis.worker.NoneStreamProcessor; |
| import org.apache.skywalking.oap.server.core.analysis.worker.RecordStreamProcessor; |
| import org.apache.skywalking.oap.server.core.analysis.worker.TopNStreamProcessor; |
| import org.apache.skywalking.oap.server.core.annotation.AnnotationListener; |
| import org.apache.skywalking.oap.server.core.storage.StorageException; |
| import org.apache.skywalking.oap.server.library.module.ModuleDefineHolder; |
| |
| /** |
| * Stream annotation listener, process the class with {@link Stream} annotation. |
| */ |
| public class StreamAnnotationListener implements AnnotationListener { |
| |
| private final ModuleDefineHolder moduleDefineHolder; |
| |
| public StreamAnnotationListener(ModuleDefineHolder moduleDefineHolder) { |
| this.moduleDefineHolder = moduleDefineHolder; |
| } |
| |
| @Override |
| public Class<? extends Annotation> annotation() { |
| return Stream.class; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void notify(Class aClass) throws StorageException { |
| if (aClass.isAnnotationPresent(Stream.class)) { |
| Stream stream = (Stream) aClass.getAnnotation(Stream.class); |
| |
| if (DisableRegister.INSTANCE.include(stream.name())) { |
| return; |
| } |
| |
| if (stream.processor().equals(RecordStreamProcessor.class)) { |
| RecordStreamProcessor.getInstance().create(moduleDefineHolder, stream, aClass); |
| } else if (stream.processor().equals(MetricsStreamProcessor.class)) { |
| MetricsStreamProcessor.getInstance().create(moduleDefineHolder, stream, aClass); |
| } else if (stream.processor().equals(TopNStreamProcessor.class)) { |
| TopNStreamProcessor.getInstance().create(moduleDefineHolder, stream, aClass); |
| } else if (stream.processor().equals(NoneStreamProcessor.class)) { |
| NoneStreamProcessor.getInstance().create(moduleDefineHolder, stream, aClass); |
| } else if (stream.processor().equals(ManagementStreamProcessor.class)) { |
| ManagementStreamProcessor.getInstance().create(moduleDefineHolder, stream, aClass); |
| } else { |
| throw new UnexpectedException("Unknown stream processor."); |
| } |
| } else { |
| throw new UnexpectedException( |
| "Stream annotation listener could only parse the class present stream annotation."); |
| } |
| } |
| } |