| /* |
| * 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.apm.toolkit.trace; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Repeatable; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| |
| /** |
| * Tag the current active span with key {@link #key()} and value {@link #value()}, if there is no active span, this |
| * annotation takes no effect. |
| * |
| * @see Tags |
| */ |
| @Target(ElementType.METHOD) |
| @Retention(RetentionPolicy.RUNTIME) |
| @Repeatable(Tags.class) |
| public @interface Tag { |
| /** |
| * @return the key of the tag to be injected into the current active span |
| */ |
| String key(); |
| |
| /** |
| * @return the value of the tag to be injected into the current active span, in the form of the customized |
| * enhancement rules, for more information, refer to https://github.com/apache/skywalking/blob/master/docs/en/setup/service-agent/java-agent/Customize-enhance-trace.md#how-to-configure |
| */ |
| String value(); |
| } |