| /* |
| * 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.source; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| import lombok.Getter; |
| |
| /** |
| * Define the default columns of source scope. These columns pass down into the persistent entity(OAL metrics entity) |
| * automatically. |
| */ |
| @Getter |
| public class ScopeDefaultColumn { |
| private String fieldName; |
| private String columnName; |
| private Class<?> type; |
| private boolean isID; |
| private int length; |
| |
| public ScopeDefaultColumn(String fieldName, String columnName, Class<?> type, boolean isID, int length) { |
| this.fieldName = fieldName; |
| this.columnName = columnName; |
| this.type = type; |
| this.isID = isID; |
| this.length = length; |
| } |
| |
| @Target({ElementType.FIELD}) |
| @Retention(RetentionPolicy.RUNTIME) |
| public @interface DefinedByField { |
| String columnName(); |
| |
| /** |
| * Dynamic active means this column is only activated through core setting explicitly. |
| * |
| * @return |
| */ |
| boolean requireDynamicActive() default false; |
| |
| /** |
| * Define column length, only effective when the type is String. |
| */ |
| int length() default 256; |
| } |
| |
| @Target({ElementType.TYPE}) |
| @Retention(RetentionPolicy.RUNTIME) |
| public @interface VirtualColumnDefinition { |
| String fieldName(); |
| |
| String columnName(); |
| |
| Class type(); |
| |
| /** |
| * Declare this virtual column is representing an entity ID of this source and generated metrics. |
| * Typically, metric ID = timestamp + entity ID |
| * |
| * This takes {@link ISource#getEntityId()}'s return as the value. |
| * |
| * @return TRUE if this is an ID column. |
| */ |
| boolean isID() default false; |
| |
| /** |
| * Define column length, only effective when the type is String. |
| */ |
| int length() default 512; |
| } |
| } |