[INLONG-10358][Sort] Make pulsar source support report audit informat…

…ion exactly once

inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/pulsar/src/main/java/org/apache/inlong/sort/pulsar/source/PulsarSource.java

@@ -0,0 +1,184 @@
+/*
+ * 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.inlong.sort.pulsar.source;
+
+import org.apache.flink.annotation.Internal;
+import org.apache.flink.annotation.PublicEvolving;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.connector.source.Boundedness;
+import org.apache.flink.api.connector.source.Source;
+import org.apache.flink.api.connector.source.SourceReader;
+import org.apache.flink.api.connector.source.SourceReaderContext;
+import org.apache.flink.api.connector.source.SplitEnumerator;
+import org.apache.flink.api.connector.source.SplitEnumeratorContext;
+import org.apache.flink.api.java.typeutils.ResultTypeQueryable;
+import org.apache.flink.connector.pulsar.source.config.SourceConfiguration;
+import org.apache.flink.connector.pulsar.source.enumerator.PulsarSourceEnumState;
+import org.apache.flink.connector.pulsar.source.enumerator.PulsarSourceEnumStateSerializer;
+import org.apache.flink.connector.pulsar.source.enumerator.PulsarSourceEnumerator;
+import org.apache.flink.connector.pulsar.source.enumerator.cursor.StartCursor;
+import org.apache.flink.connector.pulsar.source.enumerator.cursor.StopCursor;
+import org.apache.flink.connector.pulsar.source.enumerator.subscriber.PulsarSubscriber;
+import org.apache.flink.connector.pulsar.source.enumerator.topic.range.RangeGenerator;
+import org.apache.flink.connector.pulsar.source.reader.deserializer.PulsarDeserializationSchema;
+import org.apache.flink.connector.pulsar.source.reader.deserializer.PulsarDeserializationSchemaInitializationContext;
+import org.apache.flink.connector.pulsar.source.split.PulsarPartitionSplit;
+import org.apache.flink.connector.pulsar.source.split.PulsarPartitionSplitSerializer;
+import org.apache.flink.core.io.SimpleVersionedSerializer;
+
+/**
+ * The Source implementation of Pulsar. Please use a {@link PulsarSourceBuilder} to construct a
+ * {@link PulsarSource}. The following example shows how to create a PulsarSource emitting records
+ * of <code>String</code> type.
+ *
+ * <pre>{@code
+ * PulsarSource<String> source = PulsarSource
+ * .builder()
+ * .setTopics(TOPIC1， TOPIC2)
+ * .setServiceUrl(getServiceUrl())
+ * .setAdminUrl(getAdminUrl())
+ * .setSubscriptionName("test")
+ * .setDeserializationSchema(PulsarDeserializationSchema.flinkSchema(new SimpleStringSchema()))
+ * .setBounded(StopCursor::defaultStopCursor)
+ * .build();
+ * }</pre>
+ *
+ * <p>See {@link PulsarSourceBuilder} for more details.
+ *
+ * @param <OUT> The output type of the source.
+ */
+@PublicEvolving
+public final class PulsarSource<OUT>
+ implements
+ Source<OUT, PulsarPartitionSplit, PulsarSourceEnumState>,
+ ResultTypeQueryable<OUT> {
+
+ private static final long serialVersionUID = 7773108631275567433L;
+
+ /**
+ * The configuration for pulsar source, we don't support the pulsar's configuration class
+ * directly.
+ */
+ private final SourceConfiguration sourceConfiguration;
+
+ private final PulsarSubscriber subscriber;
+
+ private final RangeGenerator rangeGenerator;
+
+ private final StartCursor startCursor;
+
+ private final StopCursor stopCursor;
+
+ private final Boundedness boundedness;
+
+ /** The pulsar deserialization schema used for deserializing message. */
+ private final PulsarDeserializationSchema<OUT> deserializationSchema;
+
+ /**
+ * The constructor for PulsarSource, it's package protected for forcing using {@link
+ * PulsarSourceBuilder}.
+ */
+ PulsarSource(
+ SourceConfiguration sourceConfiguration,
+ PulsarSubscriber subscriber,
+ RangeGenerator rangeGenerator,
+ StartCursor startCursor,
+ StopCursor stopCursor,
+ Boundedness boundedness,
+ PulsarDeserializationSchema<OUT> deserializationSchema) {
+ this.sourceConfiguration = sourceConfiguration;
+ this.subscriber = subscriber;
+ this.rangeGenerator = rangeGenerator;
+ this.startCursor = startCursor;
+ this.stopCursor = stopCursor;
+ this.boundedness = boundedness;
+ this.deserializationSchema = deserializationSchema;
+ }
+
+ /**
+ * Get a PulsarSourceBuilder to builder a {@link PulsarSource}.
+ *
+ * @return a Pulsar source builder.
+ */
+ public static <OUT> PulsarSourceBuilder<OUT> builder() {
+ return new PulsarSourceBuilder<>();
+ }
+
+ @Override
+ public Boundedness getBoundedness() {
+ return boundedness;
+ }
+
+ @Internal
+ @Override
+ public SourceReader<OUT, PulsarPartitionSplit> createReader(SourceReaderContext readerContext)
+ throws Exception {
+ // Initialize the deserialization schema before creating the pulsar reader.
+ PulsarDeserializationSchemaInitializationContext initializationContext =
+ new PulsarDeserializationSchemaInitializationContext(readerContext);
+ deserializationSchema.open(initializationContext, sourceConfiguration);
+
+ return PulsarSourceReaderFactory.create(
+ readerContext, deserializationSchema, sourceConfiguration);
+ }
+
+ @Internal
+ @Override
+ public SplitEnumerator<PulsarPartitionSplit, PulsarSourceEnumState> createEnumerator(
+ SplitEnumeratorContext<PulsarPartitionSplit> enumContext) {
+ return new PulsarSourceEnumerator(
+ subscriber,
+ startCursor,
+ stopCursor,
+ rangeGenerator,
+ sourceConfiguration,
+ enumContext);
+ }
+
+ @Internal
+ @Override
+ public SplitEnumerator<PulsarPartitionSplit, PulsarSourceEnumState> restoreEnumerator(
+ SplitEnumeratorContext<PulsarPartitionSplit> enumContext,
+ PulsarSourceEnumState checkpoint) {
+ return new PulsarSourceEnumerator(
+ subscriber,
+ startCursor,
+ stopCursor,
+ rangeGenerator,
+ sourceConfiguration,
+ enumContext,
+ checkpoint);
+ }
+
+ @Internal
+ @Override
+ public SimpleVersionedSerializer<PulsarPartitionSplit> getSplitSerializer() {
+ return PulsarPartitionSplitSerializer.INSTANCE;
+ }
+
+ @Internal
+ @Override
+ public SimpleVersionedSerializer<PulsarSourceEnumState> getEnumeratorCheckpointSerializer() {
+ return PulsarSourceEnumStateSerializer.INSTANCE;
+ }
+
+ @Override
+ public TypeInformation<OUT> getProducedType() {
+ return deserializationSchema.getProducedType();
+ }
+}