Add Hudi sink connector support

flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-hudi/src/main/java/org/apache/flink/cdc/connectors/hudi/sink/HudiConfig.java

@@ -0,0 +1,165 @@
+/*
+ * 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.flink.cdc.connectors.hudi.sink;
+
+import org.apache.flink.cdc.common.configuration.ConfigOption;
+import org.apache.flink.cdc.common.configuration.ConfigOptions;
+import org.apache.flink.configuration.description.Description;
+
+import org.apache.hudi.common.config.HoodieCommonConfig;
+import org.apache.hudi.configuration.FlinkOptions;
+
+/**
+ * A utility class that holds all the configuration options for the Hudi sink. It wraps Hudi's
+ * {@link FlinkOptions} to provide a consistent interface within the CDC framework, using helper
+ * methods to reduce boilerplate.
+ */
+public class HudiConfig {
+
+    // ----- Helper Methods for Option Creation -----
+
+    private static ConfigOption<String> stringOption(String key, Description description) {
+        return ConfigOptions.key(key)
+                .stringType()
+                .noDefaultValue()
+                .withDescription(description.toString());
+    }
+
+    private static ConfigOption<String> stringOption(
+            String key, String defaultValue, Description description) {
+        return ConfigOptions.key(key)
+                .stringType()
+                .defaultValue(defaultValue)
+                .withDescription(description.toString());
+    }
+
+    private static ConfigOption<Integer> intOption(String key, Description description) {
+        return ConfigOptions.key(key)
+                .intType()
+                .noDefaultValue()
+                .withDescription(description.toString());
+    }
+
+    private static ConfigOption<Boolean> booleanOption(
+            String key, boolean defaultValue, Description description) {
+        return ConfigOptions.key(key)
+                .booleanType()
+                .defaultValue(defaultValue)
+                .withDescription(description.toString());
+    }
+
+    // ----- Public Configuration Options -----
+
+    // Core Hudi Options
+    public static final ConfigOption<String> PATH =
+            stringOption(FlinkOptions.PATH.key(), FlinkOptions.PATH.description());
+
+    //    public static final ConfigOption<String> TABLE_TYPE =
+    //            stringOption(
+    //                    FlinkOptions.TABLE_TYPE.key(),
+    //                    FlinkOptions.TABLE_TYPE.defaultValue(),
+    //                    FlinkOptions.TABLE_TYPE.description());
+    public static final ConfigOption<String> TABLE_TYPE =
+            stringOption(
+                    "hoodie.table.type",
+                    FlinkOptions.TABLE_TYPE.defaultValue(),
+                    FlinkOptions.TABLE_TYPE.description());
+
+    // Required Fields for CDC
+    public static final ConfigOption<String> RECORD_KEY_FIELD =
+            stringOption(
+                    FlinkOptions.RECORD_KEY_FIELD.key(),
+                    FlinkOptions.RECORD_KEY_FIELD.description());
+
+    public static final ConfigOption<String> ORDERING_FIELDS =
+            stringOption(
+                    FlinkOptions.ORDERING_FIELDS.key(), FlinkOptions.ORDERING_FIELDS.description());
+
+    public static final ConfigOption<String> PARTITION_PATH_FIELD =
+            stringOption(
+                    FlinkOptions.PARTITION_PATH_FIELD.key(),
+                    "",
+                    FlinkOptions.PARTITION_PATH_FIELD.description());
+
+    // Bucket Index Options
+    public static final ConfigOption<String> INDEX_TYPE =
+            stringOption(
+                    FlinkOptions.INDEX_TYPE.key(), "BUCKET", FlinkOptions.INDEX_TYPE.description());
+
+    public static final ConfigOption<String> INDEX_BUCKET_TARGET =
+            stringOption(
+                    FlinkOptions.INDEX_KEY_FIELD.key(), FlinkOptions.INDEX_KEY_FIELD.description());
+
+    public static final ConfigOption<Integer> BUCKET_INDEX_NUM_BUCKETS =
+            intOption(
+                    FlinkOptions.BUCKET_INDEX_NUM_BUCKETS.key(),
+                    FlinkOptions.BUCKET_INDEX_NUM_BUCKETS.description());
+
+    // Hive Sync Options
+    public static final ConfigOption<Boolean> HIVE_SYNC_ENABLED =
+            booleanOption(
+                    FlinkOptions.HIVE_SYNC_ENABLED.key(),
+                    false,
+                    FlinkOptions.HIVE_SYNC_ENABLED.description());
+
+    public static final ConfigOption<String> HIVE_SYNC_METASTORE_URIS =
+            stringOption(
+                    FlinkOptions.HIVE_SYNC_METASTORE_URIS.key(),
+                    FlinkOptions.HIVE_SYNC_METASTORE_URIS.description());
+
+    public static final ConfigOption<String> HIVE_SYNC_DB =
+            stringOption(FlinkOptions.HIVE_SYNC_DB.key(), FlinkOptions.HIVE_SYNC_DB.description());
+
+    public static final ConfigOption<String> HIVE_SYNC_TABLE =
+            stringOption(
+                    FlinkOptions.HIVE_SYNC_TABLE.key(), FlinkOptions.HIVE_SYNC_TABLE.description());
+
+    public static final ConfigOption<String> SCHEMA_OPERATOR_UID =
+            ConfigOptions.key("schema.operator.uid")
+                    .stringType()
+                    .defaultValue("schema-operator-uid")
+                    .withDescription(
+                            "A unique ID for the schema operator, used by the BucketAssignerOperator to create a SchemaEvolutionClient.");
+
+    public static final ConfigOption<String> TABLE_SCHEMA =
+            ConfigOptions.key("table.schema")
+                    .stringType()
+                    .noDefaultValue()
+                    .withDescription("The table schema in JSON format for the Hudi table.");
+
+    public static final ConfigOption<Integer> BUCKET_ASSIGN_TASKS =
+            intOption(
+                    FlinkOptions.BUCKET_ASSIGN_TASKS.key(),
+                    FlinkOptions.BUCKET_ASSIGN_TASKS.description());
+
+    public static final ConfigOption<Integer> WRITE_TASKS =
+            intOption(FlinkOptions.WRITE_TASKS.key(), FlinkOptions.WRITE_TASKS.description());
+
+    public static final ConfigOption<Boolean> SCHEMA_ON_READ_ENABLE =
+            booleanOption(
+                    HoodieCommonConfig.SCHEMA_EVOLUTION_ENABLE.key(),
+                    false,
+                    Description.builder().build());
+
+    public static final ConfigOption<Integer> COMPACTION_DELTA_COMMITS =
+            ConfigOptions.key("compaction.delta_commits")
+                    .intType()
+                    .defaultValue(5)
+                    .withDescription(
+                            "Max delta commits needed to trigger compaction, default 5 commits");
+}

flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-hudi/src/main/java/org/apache/flink/cdc/connectors/hudi/sink/HudiDataSink.java

@@ -0,0 +1,99 @@
+/*
+ * 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.flink.cdc.connectors.hudi.sink;
+
+import org.apache.flink.cdc.common.configuration.Configuration;
+import org.apache.flink.cdc.common.sink.DataSink;
+import org.apache.flink.cdc.common.sink.EventSinkProvider;
+import org.apache.flink.cdc.common.sink.FlinkSinkProvider;
+import org.apache.flink.cdc.common.sink.MetadataApplier;
+import org.apache.flink.cdc.connectors.hudi.sink.v2.HudiSink;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.Serializable;
+import java.time.ZoneId;
+
+/**
+ * A {@link DataSink} for Apache Hudi that provides the main entry point for the Flink CDC
+ * framework.
+ */
+public class HudiDataSink implements DataSink, Serializable {
+
+    private static final Logger LOG = LoggerFactory.getLogger(HudiDataSink.class);
+
+    private final Configuration config;
+
+    private final String schemaOperatorUid;
+
+    public HudiDataSink(Configuration config, String schemaOperatorUid) {
+        LOG.info("Creating HudiDataSink with universal configuration {}", config);
+        this.config = config;
+        this.schemaOperatorUid = schemaOperatorUid;
+    }
+
+    /** Provides the core sink implementation that handles the data flow of events. */
+    @Override
+    public EventSinkProvider getEventSinkProvider() {
+        LOG.info("Creating HudiDataSinkProvider with universal configuration {}", config);
+        // For CDC pipelines, we don't have a pre-configured schema since tables are created
+        // dynamically
+        // Instead, we use a multi-table sink that handles schema discovery and table creation
+
+        // Convert CDC configuration to Flink configuration for HoodieSink
+        org.apache.flink.configuration.Configuration flinkConfig = toFlinkConfig(config);
+
+        // Extract configuration options
+        java.util.Map<String, String> configMap = config.toMap();
+        boolean overwrite = "insert_overwrite".equals(configMap.get("write.operation"));
+        boolean isBounded = "BATCH".equals(configMap.get("execution.checkpointing.mode"));
+
+        // Create the HudiSink with multi-table support via wrapper pattern
+        // Use empty RowType since tables are created dynamically
+        HudiSink hudiSink = new HudiSink(flinkConfig, schemaOperatorUid, ZoneId.systemDefault());
+
+        return FlinkSinkProvider.of(hudiSink);
+    }
+
+    /**
+     * Provides the metadata applier. In our design, this has a passive role (e.g., logging), as
+     * transactional metadata operations are handled by the HudiCommitter.
+     */
+    @Override
+    public MetadataApplier getMetadataApplier() {
+        return new HudiMetadataApplier(config);
+    }
+
+    /**
+     * Converts a {@link org.apache.flink.cdc.common.configuration.Configuration} to a {@link
+     * org.apache.flink.configuration.Configuration}.
+     *
+     * @param cdcConfig The input CDC configuration.
+     * @return A new Flink configuration containing the same key-value pairs.
+     */
+    private static org.apache.flink.configuration.Configuration toFlinkConfig(
+            Configuration cdcConfig) {
+        final org.apache.flink.configuration.Configuration flinkConfig =
+                new org.apache.flink.configuration.Configuration();
+        if (cdcConfig != null) {
+            cdcConfig.toMap().forEach(flinkConfig::setString);
+        }
+        return flinkConfig;
+    }
+}

flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-hudi/src/main/java/org/apache/flink/cdc/connectors/hudi/sink/HudiDataSinkFactory.java

@@ -0,0 +1,97 @@
+/*
+ * 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.flink.cdc.connectors.hudi.sink;
+
+import org.apache.flink.cdc.common.configuration.ConfigOption;
+import org.apache.flink.cdc.common.configuration.Configuration;
+import org.apache.flink.cdc.common.factories.DataSinkFactory;
+import org.apache.flink.cdc.common.factories.FactoryHelper;
+import org.apache.flink.cdc.common.pipeline.PipelineOptions;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.apache.flink.cdc.connectors.hudi.sink.HudiDataSinkOptions.PREFIX_CATALOG_PROPERTIES;
+import static org.apache.flink.cdc.connectors.hudi.sink.HudiDataSinkOptions.PREFIX_TABLE_PROPERTIES;
+
+/**
+ * Factory for creating {@link HudiDataSink}. This class defines the configuration options and
+ * instantiates the sink by delegating option definitions to {@link HudiConfig}.
+ */
+public class HudiDataSinkFactory implements DataSinkFactory {
+
+    private static final Logger LOG = LoggerFactory.getLogger(HudiDataSinkFactory.class);
+
+    public static final String IDENTIFIER = "hudi";
+
+    @Override
+    public String identifier() {
+        return IDENTIFIER;
+    }
+
+    @Override
+    public HudiDataSink createDataSink(Context context) {
+        LOG.info("Creating HudiDataSink for {}", context);
+
+        FactoryHelper.createFactoryHelper(this, context)
+                .validateExcept(PREFIX_TABLE_PROPERTIES, PREFIX_CATALOG_PROPERTIES);
+
+        FactoryHelper.DefaultContext factoryContext = (FactoryHelper.DefaultContext) context;
+        Configuration config = factoryContext.getFactoryConfiguration();
+
+        String schemaOperatorUid =
+                context.getPipelineConfiguration()
+                        .get(PipelineOptions.PIPELINE_SCHEMA_OPERATOR_UID);
+
+        return new HudiDataSink(config, schemaOperatorUid);
+    }
+
+    @Override
+    public Set<ConfigOption<?>> requiredOptions() {
+        Set<ConfigOption<?>> options = new HashSet<>();
+        options.add(HudiConfig.PATH);
+        options.add(HudiConfig.RECORD_KEY_FIELD);
+        //        options.add(HudiConfig.PRECOMBINE_FIELD);
+        //        options.add(HudiConfig.BUCKET_INDEX_NUM_BUCKETS);
+        return options;
+    }
+
+    @Override
+    public Set<ConfigOption<?>> optionalOptions() {
+        Set<ConfigOption<?>> options = new HashSet<>();
+        options.add(HudiConfig.TABLE_TYPE);
+        options.add(HudiConfig.PARTITION_PATH_FIELD);
+        options.add(HudiConfig.INDEX_TYPE);
+        options.add(HudiConfig.INDEX_BUCKET_TARGET);
+        options.add(HudiConfig.HIVE_SYNC_ENABLED);
+        options.add(HudiConfig.HIVE_SYNC_METASTORE_URIS);
+        options.add(HudiConfig.HIVE_SYNC_DB);
+        options.add(HudiConfig.HIVE_SYNC_TABLE);
+
+        options.add(HudiConfig.WRITE_TASKS);
+        options.add(HudiConfig.BUCKET_ASSIGN_TASKS);
+        options.add(HudiConfig.SCHEMA_ON_READ_ENABLE);
+
+        // Compaction settings
+        options.add(HudiConfig.COMPACTION_DELTA_COMMITS);
+        return options;
+    }
+}