tristaZero commented on a change in pull request #11995: URL: https://github.com/apache/shardingsphere/pull/11995#discussion_r695554146
########## File path: shardingsphere-features/shardingsphere-shadow/shardingsphere-shadow-api/src/main/java/org/apache/shardingsphere/shadow/api/shadow/column/ShadowOperationType.java ########## @@ -0,0 +1,71 @@ +/* + * 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.shardingsphere.shadow.api.shadow.column; + +import lombok.NoArgsConstructor; + +import java.util.Optional; + +/** + * Operation types supported by shadow. + */ +@NoArgsConstructor +public enum ShadowOperationType { + + /** + * The shadow operation is insert. + */ + INSERT, + + /** + * The shadow operation is delete. + */ + DELETE, + + /** + * The shadow operation is update. + */ + UPDATE, + + /** + * The shadow operation is select. + */ + SELECT; + + /** + * Create shadow operation type. + * + * @param operationType operation type + * @return shadow operation type + */ + public static Optional<ShadowOperationType> newInstance(final String operationType) { Review comment: Could your refer to `MySQLAuthenticationMethod`? ########## File path: shardingsphere-features/shardingsphere-shadow/shardingsphere-shadow-core/src/main/java/org/apache/shardingsphere/shadow/algorithm/shadow/note/SimpleSQLNoteShadowAlgorithm.java ########## @@ -0,0 +1,117 @@ +/* + * 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.shardingsphere.shadow.algorithm.shadow.note; + +import com.google.common.base.Preconditions; +import lombok.Getter; +import lombok.Setter; +import org.apache.shardingsphere.shadow.api.shadow.note.NoteShadowAlgorithm; +import org.apache.shardingsphere.shadow.api.shadow.note.PreciseNoteShadowValue; + +import java.util.Collection; +import java.util.HashMap; +import java.util.Map; +import java.util.Objects; +import java.util.Optional; +import java.util.Properties; + +/** + * Simple note shadow algorithm. + */ +@Getter +@Setter +public final class SimpleSQLNoteShadowAlgorithm implements NoteShadowAlgorithm<String> { + + private static final String NOTE_SPACE = ","; + + private static final String NOTE_ELEMENT_SPACE = "="; + + private static final String NOTE_PREFIX = "/*"; + + private static final String NOTE_SUFFIX = "*/"; + + private Properties props = new Properties(); + + @Override + public String getType() { + return "SIMPLE_NOTE"; + } + + @Override + public void init() { + checkPropsSize(); + } + + private void checkPropsSize() { + Preconditions.checkState(!props.isEmpty(), "Simple note shadow algorithm props cannot be empty."); + } + + @Override + public boolean isShadow(final Collection<String> shadowTableNames, final PreciseNoteShadowValue<String> noteShadowValue) { + if (!shadowTableNames.contains(noteShadowValue.getLogicTableName())) { + return false; + } + Optional<Map<String, String>> noteOptional = parseNote(noteShadowValue.getSqlNoteValue()); + return noteOptional.filter(stringStringMap -> props.entrySet().stream().allMatch(entry -> Objects.equals(entry.getValue(), stringStringMap.get(String.valueOf(entry.getKey()))))).isPresent(); + } + + private Optional<Map<String, String>> parseNote(final String sqlNoteValue) { Review comment: It is suggested to extract this logic to a util class for other `note algorithms`. ########## File path: shardingsphere-features/shardingsphere-shadow/shardingsphere-shadow-core/src/main/java/org/apache/shardingsphere/shadow/algorithm/shadow/ShadowAlgorithmType.java ########## @@ -0,0 +1,52 @@ +/* + * 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.shardingsphere.shadow.algorithm.shadow; + +import java.util.Optional; + +/** + * Shadow algorithm type. + */ +public enum ShadowAlgorithmType { + + /** + * Shadow algorithm use column match with regular expression. + */ + COLUMN_REGEX_MATCH, + + /** + * Shadow algorithm use simple sql note. + */ + SIMPLE_NOTE; + + /** + * Create shadow algorithm type. + * + * @param shadowAlgorithmType shadow algorithm type + * @return shadow operation type + */ + public static Optional<ShadowAlgorithmType> newInstance(final String shadowAlgorithmType) { Review comment: Do you think `instanceof` is suitable to replace this class? ########## File path: shardingsphere-features/shardingsphere-shadow/shardingsphere-shadow-api/src/main/java/org/apache/shardingsphere/shadow/api/shadow/note/PreciseNoteShadowValue.java ########## @@ -15,24 +15,19 @@ * limitations under the License. */ -package org.apache.shardingsphere.shadow.algorithm; +package org.apache.shardingsphere.shadow.api.shadow.note; import lombok.Getter; -import lombok.Setter; -import org.apache.shardingsphere.shadow.spi.ShadowAlgorithm; -import java.util.Properties; +import lombok.RequiredArgsConstructor; +import lombok.ToString; +import org.apache.shardingsphere.shadow.api.shadow.ShadowValue; -/** - * Simple note shadow algorithm. - */ +@RequiredArgsConstructor @Getter -@Setter -public final class SimpleSQLNoteShadowAlgorithm implements ShadowAlgorithm { +@ToString +public class PreciseNoteShadowValue<T extends Comparable<?>> implements ShadowValue { Review comment: Is it supposed to be a final class? ########## File path: shardingsphere-features/shardingsphere-shadow/shardingsphere-shadow-api/src/main/java/org/apache/shardingsphere/shadow/api/shadow/column/PreciseColumnShadowValue.java ########## @@ -0,0 +1,40 @@ +/* + * 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.shardingsphere.shadow.api.shadow.column; + +import lombok.Getter; +import lombok.RequiredArgsConstructor; +import lombok.ToString; +import org.apache.shardingsphere.shadow.api.shadow.ShadowValue; + +/** + * Shadow value for precise column. + */ +@RequiredArgsConstructor +@Getter +@ToString +public class PreciseColumnShadowValue<T extends Comparable<?>> implements ShadowValue { Review comment: Is it supposed to be a final class? -- This is an automated message from the Apache Git Service. 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