hailin0 commented on code in PR #3950: URL: https://github.com/apache/incubator-seatunnel/pull/3950#discussion_r1072048360
########## seatunnel-formats/seatunnel-format-json/src/main/java/org/apache/seatunnel/format/json/canal/CanalJsonDeserializationSchema.java: ########## @@ -0,0 +1,282 @@ +/* + * 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.seatunnel.format.json.canal; + +import static org.apache.seatunnel.api.table.type.BasicType.STRING_TYPE; +import static java.lang.String.format; + +import org.apache.seatunnel.api.serialization.DeserializationSchema; +import org.apache.seatunnel.api.source.Collector; +import org.apache.seatunnel.api.table.type.RowKind; +import org.apache.seatunnel.api.table.type.SeaTunnelDataType; +import org.apache.seatunnel.api.table.type.SeaTunnelRow; +import org.apache.seatunnel.api.table.type.SeaTunnelRowType; +import org.apache.seatunnel.common.exception.CommonErrorCode; +import org.apache.seatunnel.format.json.JsonDeserializationSchema; +import org.apache.seatunnel.format.json.exception.SeaTunnelJsonFormatException; + +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.node.ObjectNode; +import com.google.common.collect.Lists; + +import java.io.IOException; +import java.util.List; +import java.util.Objects; +import java.util.Optional; +import java.util.regex.Pattern; + +public class CanalJsonDeserializationSchema implements DeserializationSchema<SeaTunnelRow> { + + private static final long serialVersionUID = 1L; + + private static final String FIELD_OLD = "old"; + + private static final String FIELD_DATA = "data"; + + private static final String FIELD_TYPE = "type"; + + private static final String OP_INSERT = "INSERT"; + + private static final String OP_UPDATE = "UPDATE"; + + private static final String OP_DELETE = "DELETE"; + + private static final String OP_CREATE = "CREATE"; + + private String database; + + private String table; + + /** Names of fields. */ + private final String[] fieldNames; + + /** Number of fields. */ + private final int fieldCount; + + private boolean ignoreParseErrors; + + /** Pattern of the specific database. */ + private final Pattern databasePattern; + + /** Pattern of the specific table. */ + private final Pattern tablePattern; + + private final JsonDeserializationSchema jsonDeserializer; + + private final SeaTunnelRowType physicalRowType; + + public CanalJsonDeserializationSchema(SeaTunnelRowType physicalRowType, + String database, + String table, + boolean ignoreParseErrors + ) { + this.physicalRowType = physicalRowType; + final SeaTunnelRowType jsonRowType = createJsonRowType(physicalRowType); + this.jsonDeserializer = new JsonDeserializationSchema( + false, + ignoreParseErrors, + jsonRowType + ); + this.database = database; + this.table = table; + this.fieldNames = physicalRowType.getFieldNames(); + this.fieldCount = physicalRowType.getTotalFields(); + this.ignoreParseErrors = ignoreParseErrors; + this.databasePattern = database == null ? null : Pattern.compile(database); + this.tablePattern = table == null ? null : Pattern.compile(table); + } + + @Override + public SeaTunnelRow deserialize(byte[] message) throws IOException { + if (message == null) { + return null; + } + return convertJsonNode(convertBytes(message)); + } + + @Override + public SeaTunnelDataType<SeaTunnelRow> getProducedType() { + return this.physicalRowType; + } + + public void deserialize(byte[] message, Collector<SeaTunnelRow> out) throws IOException { Review Comment: example ```java public void deserialize(byte[] message, Collector<SeaTunnelRow> out) throws IOException { JsonNode jsonNode = convert(message); ArrayNode dataNode = (ArrayNode) jsonNode.get("data"); switch (jsonNode.get("type")) { case "update": ArrayNode oldNode = (ArrayNode) jsonNode.get("old"); for (int i = 0; i < dataNode.size(); i++) { JsonNode data = dataNode.get(i); JsonNode old = oldNode.get(i); SeaTunnelRow updateBefore = convert(jsonNode, data); SeaTunnelRow updateAfter = convert(jsonNode, old); out.collect(updateBefore); out.collect(updateAfter); } break; case "create": for (int i = 0; i < dataNode.size(); i++) { JsonNode data = dataNode.get(i); SeaTunnelRow insert = convert(jsonNode, data); out.collect(insert); } break; case "delete": for (int i = 0; i < dataNode.size(); i++) { JsonNode data = dataNode.get(i); SeaTunnelRow delete = convert(jsonNode, data); out.collect(delete); } break; } } ``` ########## seatunnel-formats/seatunnel-format-json/src/main/java/org/apache/seatunnel/format/json/canal/CanalJsonDeserializationSchema.java: ########## @@ -0,0 +1,282 @@ +/* + * 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.seatunnel.format.json.canal; + +import static org.apache.seatunnel.api.table.type.BasicType.STRING_TYPE; +import static java.lang.String.format; + +import org.apache.seatunnel.api.serialization.DeserializationSchema; +import org.apache.seatunnel.api.source.Collector; +import org.apache.seatunnel.api.table.type.RowKind; +import org.apache.seatunnel.api.table.type.SeaTunnelDataType; +import org.apache.seatunnel.api.table.type.SeaTunnelRow; +import org.apache.seatunnel.api.table.type.SeaTunnelRowType; +import org.apache.seatunnel.common.exception.CommonErrorCode; +import org.apache.seatunnel.format.json.JsonDeserializationSchema; +import org.apache.seatunnel.format.json.exception.SeaTunnelJsonFormatException; + +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.node.ObjectNode; +import com.google.common.collect.Lists; + +import java.io.IOException; +import java.util.List; +import java.util.Objects; +import java.util.Optional; +import java.util.regex.Pattern; + +public class CanalJsonDeserializationSchema implements DeserializationSchema<SeaTunnelRow> { + + private static final long serialVersionUID = 1L; + + private static final String FIELD_OLD = "old"; + + private static final String FIELD_DATA = "data"; + + private static final String FIELD_TYPE = "type"; + + private static final String OP_INSERT = "INSERT"; + + private static final String OP_UPDATE = "UPDATE"; + + private static final String OP_DELETE = "DELETE"; + + private static final String OP_CREATE = "CREATE"; + + private String database; + + private String table; + + /** Names of fields. */ + private final String[] fieldNames; + + /** Number of fields. */ + private final int fieldCount; + + private boolean ignoreParseErrors; + + /** Pattern of the specific database. */ + private final Pattern databasePattern; + + /** Pattern of the specific table. */ + private final Pattern tablePattern; + + private final JsonDeserializationSchema jsonDeserializer; + + private final SeaTunnelRowType physicalRowType; + + public CanalJsonDeserializationSchema(SeaTunnelRowType physicalRowType, + String database, + String table, + boolean ignoreParseErrors + ) { + this.physicalRowType = physicalRowType; + final SeaTunnelRowType jsonRowType = createJsonRowType(physicalRowType); + this.jsonDeserializer = new JsonDeserializationSchema( + false, + ignoreParseErrors, + jsonRowType + ); + this.database = database; + this.table = table; + this.fieldNames = physicalRowType.getFieldNames(); + this.fieldCount = physicalRowType.getTotalFields(); + this.ignoreParseErrors = ignoreParseErrors; + this.databasePattern = database == null ? null : Pattern.compile(database); + this.tablePattern = table == null ? null : Pattern.compile(table); + } + + @Override + public SeaTunnelRow deserialize(byte[] message) throws IOException { + if (message == null) { + return null; + } + return convertJsonNode(convertBytes(message)); + } Review Comment: ```suggestion public SeaTunnelRow deserialize(byte[] message) throws IOException { throw new UnsupportedOperationException(); } ``` -- This is an automated message from the Apache Git Service. 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