完成kafka source

Author: jiemotongxue

kafka/kafka-source/src/main/java/com/dtstack/flink/sql/source/kafka/CustomerJsonDeserializationSchema.java

@@ -18,10 +18,11 @@
 
 package com.dtstack.flink.sql.source.kafka;
 
-import com.dtstack.flink.sql.format.dtnest.DtNestRowDeserializationSchema;
+import com.dtstack.flink.sql.format.DeserializationMetricWrapper;
 import org.apache.flink.metrics.MetricGroup;
 import org.apache.flink.streaming.api.functions.AssignerWithPeriodicWatermarks;
 import org.apache.flink.streaming.api.functions.AssignerWithPunctuatedWatermarks;
+import org.apache.flink.streaming.api.functions.source.SourceFunction;
 import org.apache.flink.streaming.api.operators.StreamingRuntimeContext;
 import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer;
 import org.apache.flink.streaming.connectors.kafka.config.OffsetCommitMode;
@@ -35,38 +36,42 @@
 import java.util.Properties;
 import java.util.regex.Pattern;
 
+
 /**
- * @author: chuixue
- * @create: 2019-11-05 10:58
- * @description:
- **/
-public class CustomerKafkaConsumer extends FlinkKafkaConsumer<Row> {
+ * Reason:
+ * Date: 2018/10/19
+ * Company: www.dtstack.com
+ *
+ * @author xuchao
+ */
+public class KafkaConsumer extends FlinkKafkaConsumer<Row> {
 
-    private static final long serialVersionUID = -2265366268827807739L;
+    private static final long serialVersionUID = 4873757508981691375L;
 
-    private CustomerJsonDeserializationSchema customerJsonDeserialization;
+    private DeserializationMetricWrapper deserializationMetricWrapper;
 
-    public CustomerKafkaConsumer(String topic, DtNestRowDeserializationSchema<Row> valueDeserializer, Properties props) {
-        super(Arrays.asList(topic.split(",")), valueDeserializer, props);
-        this.customerJsonDeserialization = (CustomerJsonDeserializationSchema) valueDeserializer;
+    public KafkaConsumer(String topic, DeserializationMetricWrapper deserializationMetricWrapper, Properties props) {
+        super(Arrays.asList(topic.split(",")), deserializationMetricWrapper, props);
+        this.deserializationMetricWrapper = deserializationMetricWrapper;
     }
 
-    public CustomerKafkaConsumer(Pattern subscriptionPattern, DtNestRowDeserializationSchema<Row> valueDeserializer, Properties props) {
-        super(subscriptionPattern, valueDeserializer, props);
-        this.customerJsonDeserialization = (CustomerJsonDeserializationSchema) valueDeserializer;
+    public KafkaConsumer(Pattern subscriptionPattern, DeserializationMetricWrapper deserializationMetricWrapper, Properties props) {
+        super(subscriptionPattern, deserializationMetricWrapper, props);
+        this.deserializationMetricWrapper = deserializationMetricWrapper;
     }
 
     @Override
-    public void run(SourceContext<Row> sourceContext) throws Exception {
-        customerJsonDeserialization.setRuntimeContext(getRuntimeContext());
-        customerJsonDeserialization.initMetric();
+    public void run(SourceFunction.SourceContext<Row> sourceContext) throws Exception {
+        deserializationMetricWrapper.setRuntimeContext(getRuntimeContext());
+        deserializationMetricWrapper.initMetric();
         super.run(sourceContext);
     }
 
     @Override
-    protected AbstractFetcher<Row, ?> createFetcher(SourceContext<Row> sourceContext, Map<KafkaTopicPartition, Long> assignedPartitionsWithInitialOffsets, SerializedValue<AssignerWithPeriodicWatermarks<Row>> watermarksPeriodic, SerializedValue<AssignerWithPunctuatedWatermarks<Row>> watermarksPunctuated, StreamingRuntimeContext runtimeContext, OffsetCommitMode offsetCommitMode, MetricGroup consumerMetricGroup, boolean useMetrics) throws Exception {
+    protected AbstractFetcher<Row, ?> createFetcher(SourceFunction.SourceContext<Row> sourceContext, Map<KafkaTopicPartition, Long> assignedPartitionsWithInitialOffsets, SerializedValue<AssignerWithPeriodicWatermarks<Row>> watermarksPeriodic, SerializedValue<AssignerWithPunctuatedWatermarks<Row>> watermarksPunctuated, StreamingRuntimeContext runtimeContext, OffsetCommitMode offsetCommitMode, MetricGroup consumerMetricGroup, boolean useMetrics) throws Exception {
         AbstractFetcher<Row, ?> fetcher = super.createFetcher(sourceContext, assignedPartitionsWithInitialOffsets, watermarksPeriodic, watermarksPunctuated, runtimeContext, offsetCommitMode, consumerMetricGroup, useMetrics);
-        customerJsonDeserialization.setFetcher(fetcher);
+        ((KafkaDeserializationMetricWrapper) deserializationMetricWrapper).setFetcher(fetcher);
         return fetcher;
     }
-}
+
+}

…/source/kafka/CustomerKafkaConsumer.java …link/sql/source/kafka/KafkaConsumer.javakafka/kafka-source/src/main/java/com/dtstack/flink/sql/source/kafka/CustomerKafkaConsumer.java renamed to kafka/kafka-source/src/main/java/com/dtstack/flink/sql/source/kafka/KafkaConsumer.java kafka/kafka-source/src/main/java/com/dtstack/flink/sql/source/kafka/CustomerKafkaConsumer.java renamed to kafka/kafka-source/src/main/java/com/dtstack/flink/sql/source/kafka/KafkaConsumer.java

@@ -0,0 +1,48 @@
+/*
+ * 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 com.dtstack.flink.sql.source.kafka;
+
+import com.dtstack.flink.sql.source.kafka.table.KafkaSourceTableInfo;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase;
+import org.apache.flink.types.Row;
+import org.apache.kafka.common.requests.IsolationLevel;
+
+import java.util.Properties;
+import java.util.regex.Pattern;
+
+/**
+ * company: www.dtstack.com
+ * @author: toutian
+ * create: 2019/12/24
+ */
+public class KafkaConsumerFactory extends AbstractKafkaConsumerFactory {
+
+    @Override
+    public FlinkKafkaConsumerBase<Row> createKafkaTableSource(KafkaSourceTableInfo kafkaSourceTableInfo, TypeInformation<Row> typeInformation, Properties props) {
+        KafkaConsumer kafkaSrc = null;
+        if (kafkaSourceTableInfo.getTopicIsPattern()) {
+            kafkaSrc = new KafkaConsumer(Pattern.compile(kafkaSourceTableInfo.getTopic()), createDeserializationMetricWrapper(kafkaSourceTableInfo, typeInformation, (subscriptionState, tp) -> subscriptionState.partitionLag(tp, IsolationLevel.READ_UNCOMMITTED)), props);
+        } else {
+            kafkaSrc = new KafkaConsumer(kafkaSourceTableInfo.getTopic(), createDeserializationMetricWrapper(kafkaSourceTableInfo, typeInformation, (subscriptionState, tp) -> subscriptionState.partitionLag(tp, IsolationLevel.READ_UNCOMMITTED)), props);
+        }
+        return kafkaSrc;
+    }
+
+}

kafka/kafka-source/src/main/java/com/dtstack/flink/sql/source/kafka/KafkaConsumerFactory.java

@@ -84,14 +84,8 @@ public Table genStreamSource(SourceTableInfo sourceTableInfo, StreamExecutionEnv
 
         TypeInformation<Row> typeInformation = new RowTypeInfo(types, kafkaSourceTableInfo.getFields());
 
-        FlinkKafkaConsumer<Row> kafkaSrc;
-        if (BooleanUtils.isTrue(kafkaSourceTableInfo.getTopicIsPattern())) {
-            kafkaSrc = new CustomerKafkaConsumer(Pattern.compile(topicName),
-                    new CustomerJsonDeserializationSchema(typeInformation, kafkaSourceTableInfo.getPhysicalFields(), kafkaSourceTableInfo.getFieldExtraInfoList()), props);
-        } else {
-            kafkaSrc = new CustomerKafkaConsumer(topicName,
-                    new CustomerJsonDeserializationSchema(typeInformation, kafkaSourceTableInfo.getPhysicalFields(), kafkaSourceTableInfo.getFieldExtraInfoList()), props);
-        }
+        FlinkKafkaConsumer<Row> kafkaSrc = (FlinkKafkaConsumer<Row>) new KafkaConsumerFactory().createKafkaTableSource(kafkaSourceTableInfo, typeInformation, props);
+
 
         //earliest,latest
         if ("earliest".equalsIgnoreCase(kafkaSourceTableInfo.getOffsetReset())) {