| 提交 | 用户 | age | ||
| 0b055a | 1 | package com.hz.canal.starter.configuration; |
| R | 2 | |
| 3 | import com.alibaba.otter.canal.protocol.CanalEntry; | |
| 4 | import com.alibaba.otter.canal.protocol.exception.CanalClientException; | |
| 5 | import com.hz.canal.starter.mode.CanalMessage; | |
| 6 | import org.apache.commons.lang3.StringUtils; | |
| 7 | ||
| 8 | import java.lang.reflect.Method; | |
| 9 | import java.util.Arrays; | |
| 10 | import java.util.List; | |
| 11 | import java.util.Set; | |
| 12 | import java.util.function.Predicate; | |
| 13 | import java.util.stream.Collectors; | |
| 14 | ||
| 15 | /** | |
| 16 | * 监听的终端注册器 | |
| 17 | * | |
| 18 | * @author wuqiong 2022/4/11 | |
| 19 | */ | |
| 20 | public class CanalListenerEndpointRegistrar { | |
| 21 | ||
| 22 | private Object bean; | |
| 23 | private Method method; | |
| 24 | ||
| 25 | /** | |
| 26 | * 如果未进行配置，则使用配置文件里全部 destination | |
| 27 | */ | |
| 28 | private String destination; | |
| 29 | ||
| 30 | /** | |
| 31 | * 数据库名 | |
| 32 | */ | |
| 33 | private String database; | |
| 34 | ||
| 35 | /** | |
| 36 | * 数据表名 | |
| 37 | */ | |
| 38 | private String[] table; | |
| 39 | ||
| 40 | /** | |
| 41 | * 数据变动类型，此处请注意，默认不包含 DDL | |
| 42 | */ | |
| 43 | private CanalEntry.EventType[] eventType; | |
| 44 | ||
| 45 | /** | |
| 46 | * 1、目前实现的 DML 解析器仅支持1个参数, 该参数对象内包含了: 库名、表名、事件类型、变更的数据 <p> | |
| 47 | * 2、方法参数必须为: CanalMessage <p> | |
| 48 | * 3、如果CanalListener 指定的 destination 不在配置文件内，则直接抛错 <p> | |
| 49 | * | |
| 50 | * @param sets | |
| 51 | * @return void | |
| 52 | * @author wuqiong 2022-04-23 20:27 | |
| 53 | */ | |
| 54 | public void checkParameter(Set<String> sets) { | |
| 55 | List<Class<?>> classes = parameterTypes(); | |
| 56 | if (classes.size() != 1 || classes.get(0) != CanalMessage.class) | |
| 57 | throw new IllegalArgumentException("@CanalListener Method Parameter Type Invalid, " + | |
| 58 | "Need Parameter Type [ com.duxinglangzi.canal.starter.mode.CanalMessage ] please check "); | |
| 59 | if (StringUtils.isNotBlank(getDestination()) && !sets.contains(getDestination())) | |
| 60 | throw new CanalClientException("@CanalListener Illegal destination " + getDestination() + ", please check "); | |
| 61 | ||
| 62 | } | |
| 63 | ||
| 64 | ||
| 65 | public List<Class<?>> parameterTypes() { | |
| 66 | return Arrays.stream(getMethod().getParameterTypes()).collect(Collectors.toList()); | |
| 67 | } | |
| 68 | ||
| 69 | public boolean isContainDestination(String destination) { | |
| 70 | if (StringUtils.isBlank(getDestination())) return true; | |
| 71 | return getDestination().equals(destination); | |
| 72 | } | |
| 73 | ||
| 74 | /** | |
| 75 | * 过滤参数 | |
| 76 | * | |
| 77 | * @param database | |
| 78 | * @param tableName | |
| 79 | * @param eventType | |
| 80 | * @return java.util.function.Predicate | |
| 81 | * @author wuqiong 2022-04-23 20:47 | |
| 82 | */ | |
| 83 | public static Predicate<CanalListenerEndpointRegistrar> filterArgs( | |
| 84 | String database, String tableName, CanalEntry.EventType eventType) { | |
| 85 | Predicate<CanalListenerEndpointRegistrar> databases = | |
| 86 | e -> StringUtils.isBlank(e.getDatabase()) || e.getDatabase().equals(database); | |
| 87 | Predicate<CanalListenerEndpointRegistrar> table = e -> e.getTable().length == 0 | |
| 88 | || (e.getTable().length == 1 && "".equals(e.getTable()[0])) | |
| 89 | || Arrays.stream(e.getTable()).anyMatch(s -> s.equals(tableName)); | |
| 90 | Predicate<CanalListenerEndpointRegistrar> eventTypes = e -> e.getEventType().length == 0 | |
| 91 | || Arrays.stream(e.getEventType()).anyMatch(eve -> eve == eventType); | |
| 92 | return databases.and(table).and(eventTypes); | |
| 93 | } | |
| 94 | ||
| 95 | ||
| 96 | public CanalListenerEndpointRegistrar( | |
| 97 | Object bean, Method method, String destination, | |
| 98 | String database, String[] tables, CanalEntry.EventType[] eventTypes) { | |
| 99 | this.bean = bean; | |
| 100 | this.method = method; | |
| 101 | this.destination = destination; | |
| 102 | this.database = database; | |
| 103 | this.table = tables; | |
| 104 | this.eventType = eventTypes; | |
| 105 | } | |
| 106 | ||
| 107 | public Object getBean() { | |
| 108 | return bean; | |
| 109 | } | |
| 110 | ||
| 111 | public Method getMethod() { | |
| 112 | return method; | |
| 113 | } | |
| 114 | ||
| 115 | public String getDestination() { | |
| 116 | return destination; | |
| 117 | } | |
| 118 | ||
| 119 | public String getDatabase() { | |
| 120 | return database; | |
| 121 | } | |
| 122 | ||
| 123 | public String[] getTable() { | |
| 124 | return table; | |
| 125 | } | |
| 126 | ||
| 127 | public CanalEntry.EventType[] getEventType() { | |
| 128 | return eventType; | |
| 129 | } | |
| 130 | } | |
