support aliyun-json

paimon-flink/paimon-flink-cdc/src/main/java/org/apache/paimon/flink/action/cdc/format/aliyun/AliyunDataFormat.java

@@ -0,0 +1,34 @@
+/*
+ * 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.paimon.flink.action.cdc.format.aliyun;
+
+import org.apache.paimon.flink.action.cdc.format.AbstractJsonDataFormat;
+import org.apache.paimon.flink.action.cdc.format.RecordParserFactory;
+
+/**
+ * Supports the message queue's debezium json data format and provides definitions for the message
+ * queue's record json deserialization class and parsing class {@link AliyunRecordParser}.
+ */
+public class AliyunDataFormat extends AbstractJsonDataFormat {
+
+    @Override
+    protected RecordParserFactory parser() {
+        return AliyunRecordParser::new;
+    }
+}

paimon-flink/paimon-flink-cdc/src/main/java/org/apache/paimon/flink/action/cdc/format/aliyun/AliyunDataFormatFactory.java

@@ -0,0 +1,38 @@
+/*
+ * 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.paimon.flink.action.cdc.format.aliyun;
+
+import org.apache.paimon.flink.action.cdc.format.DataFormat;
+import org.apache.paimon.flink.action.cdc.format.DataFormatFactory;
+
+/** Factory to create {@link AliyunDataFormat}. */
+public class AliyunDataFormatFactory implements DataFormatFactory {
+
+    public static final String IDENTIFIER = "aliyun-json";
+
+    @Override
+    public String identifier() {
+        return IDENTIFIER;
+    }
+
+    @Override
+    public DataFormat create() {
+        return new AliyunDataFormat();
+    }
+}

paimon-flink/paimon-flink-cdc/src/main/java/org/apache/paimon/flink/action/cdc/format/aliyun/AliyunFieldParser.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.paimon.flink.action.cdc.format.aliyun;
+
+/** Converts some special types such as enum、set、geometry. */
+public class AliyunFieldParser {
+
+    protected static byte[] convertGeoType2WkbArray(byte[] mysqlGeomBytes) {
+        int sridLength = 4;
+        boolean hasSrid = false;
+        for (int i = 0; i < sridLength; ++i) {
+            if (mysqlGeomBytes[i] != 0) {
+                hasSrid = true;
+                break;
+            }
+        }
+        byte[] wkb;
+        if (hasSrid) {
+            wkb = new byte[mysqlGeomBytes.length];
+            // byteOrder + geometry
+            System.arraycopy(mysqlGeomBytes, 4, wkb, 0, 5);
+            // srid
+            System.arraycopy(mysqlGeomBytes, 0, wkb, 5, 4);
+            // geometry
+            System.arraycopy(mysqlGeomBytes, 9, wkb, 9, wkb.length - 9);
+
+            // set srid flag
+            if (wkb[0] == 0) {
+                // big endian
+                wkb[1] = (byte) (wkb[1] + 32);
+            } else {
+                wkb[4] = (byte) (wkb[4] + 32);
+            }
+        } else {
+            wkb = new byte[mysqlGeomBytes.length - 4];
+            System.arraycopy(mysqlGeomBytes, 4, wkb, 0, wkb.length);
+        }
+        return wkb;
+    }
+
+    protected static String convertSet(String value, String mysqlType) {
+        // mysql set type value can be filled with more than one, value is a bit string conversion
+        // from the long
+        int indexes = Integer.parseInt(value);
+        return getSetValuesByIndex(mysqlType, indexes);
+    }
+
+    protected static String convertEnum(String value, String mysqlType) {
+        int elementIndex = Integer.parseInt(value);
+        // enum('a','b','c')
+        return getEnumValueByIndex(mysqlType, elementIndex);
+    }
+
+    protected static String getEnumValueByIndex(String mysqlType, int elementIndex) {
+        String[] options = extractEnumValueByIndex(mysqlType);
+
+        return options[elementIndex - 1];
+    }
+
+    protected static String getSetValuesByIndex(String mysqlType, int indexes) {
+        String[] options = extractSetValuesByIndex(mysqlType);
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("[");
+        int index = 0;
+        boolean first = true;
+        int optionLen = options.length;
+
+        while (indexes != 0L) {
+            if (indexes % 2L != 0) {
+                if (first) {
+                    first = false;
+                } else {
+                    sb.append(',');
+                }
+                if (index < optionLen) {
+                    sb.append(options[index]);
+                } else {
+                    throw new RuntimeException(
+                            String.format(
+                                    "extractSetValues from mysqlType[%s],index:%d failed",
+                                    mysqlType, indexes));
+                }
+            }
+            ++index;
+            indexes = indexes >>> 1;
+        }
+        sb.append("]");
+        return sb.toString();
+    }
+
+    private static String[] extractSetValuesByIndex(String mysqlType) {
+        // set('x','y')
+        return mysqlType.substring(5, mysqlType.length() - 2).split("'\\s*,\\s*'");
+    }
+
+    private static String[] extractEnumValueByIndex(String mysqlType) {
+        // enum('x','y')
+        return mysqlType.substring(6, mysqlType.length() - 2).split("'\\s*,\\s*'");
+    }
+}