generated from kestra-io/plugin-template
-
Notifications
You must be signed in to change notification settings - Fork 5
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
fix: handle complex types when generating Avro values (#94)
* fix: handle complex types when generating Avro values * chore: add TODO comment * fix: handle null value * test: add unit tests * test: add unit tests
- Loading branch information
Showing
4 changed files
with
449 additions
and
97 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
88 changes: 88 additions & 0 deletions
88
src/main/java/io/kestra/plugin/kafka/serdes/MapToGenericRecordSerializer.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| package io.kestra.plugin.kafka.serdes; | ||
|
|
||
| import io.confluent.kafka.schemaregistry.avro.AvroSchema; | ||
| import java.util.Collection; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.Map; | ||
| import org.apache.avro.Schema; | ||
| import org.apache.avro.generic.GenericArray; | ||
| import org.apache.avro.generic.GenericEnumSymbol; | ||
| import org.apache.avro.generic.GenericFixed; | ||
| import org.apache.avro.generic.GenericRecord; | ||
| import org.apache.kafka.common.serialization.Serializer; | ||
|
|
||
| public class MapToGenericRecordSerializer implements Serializer<Object> { | ||
|
|
||
| private final KafkaAvroSerializer serializer; | ||
| private final AvroSchema schema; | ||
|
|
||
| public MapToGenericRecordSerializer(KafkaAvroSerializer serializer, AvroSchema schema) { | ||
| this.serializer = serializer; | ||
| this.schema = schema; | ||
| } | ||
|
|
||
| @Override | ||
| public void configure(Map<String, ?> configs, boolean isKey) { | ||
| this.serializer.configure(configs, isKey); | ||
| } | ||
|
|
||
| @Override | ||
| public byte[] serialize(String topic, Object data) { | ||
| return serializer.serialize(topic, buildValue(schema.rawSchema(), data)); | ||
| } | ||
|
|
||
| @Override | ||
| public void close() { | ||
| this.serializer.close(); | ||
| } | ||
|
|
||
| private static Object buildValue(Schema schema, Object data) { | ||
| if (data == null) { | ||
| return null; | ||
| } | ||
| return switch (schema.getType()) { | ||
| case UNION -> buildUnionValue(schema, data); | ||
| case RECORD -> buildRecordValue(schema, (Map<String, ?>) data); | ||
| case MAP -> buildMapValue(schema, (Map<String, ?>) data); | ||
| case ARRAY -> buildArrayValue(schema, (Collection<?>) data); | ||
| case ENUM -> buildEnumValue(schema, (String) data); | ||
| case FIXED -> buildFixedValue(schema, (byte[]) data); | ||
| case STRING, BYTES, INT, LONG, FLOAT, DOUBLE, BOOLEAN, NULL -> data; | ||
| }; | ||
| } | ||
|
|
||
| private static Object buildUnionValue(Schema schema, Object value) { | ||
| // TODO using the first non-null schema allows support for optional values, but not polymorphism | ||
| for (Schema s : schema.getTypes()) { | ||
| if (!s.getType().equals(Schema.Type.NULL)) { | ||
| return buildValue(s, value); | ||
| } | ||
| } | ||
| throw new IllegalArgumentException(); | ||
| } | ||
|
|
||
| private static GenericRecord buildRecordValue(Schema schema, Map<String, ?> data) { | ||
| final var record = new org.apache.avro.generic.GenericData.Record(schema); | ||
| data.forEach((key, value) -> record.put(key, buildValue(schema.getField(key).schema(), value))); | ||
| return record; | ||
| } | ||
|
|
||
| private static Map<String, ?> buildMapValue(Schema schema, Map<String, ?> data) { | ||
| final var record = new LinkedHashMap<String, Object>(); | ||
| data.forEach((key, value) -> record.put(key, buildValue(schema.getValueType(), value))); | ||
| return record; | ||
| } | ||
|
|
||
| private static GenericArray<?> buildArrayValue(Schema schema, Collection<?> data) { | ||
| final var values = data.stream().map(value -> buildValue(schema.getElementType(), value)).toList(); | ||
| return new org.apache.avro.generic.GenericData.Array<>(schema, values); | ||
| } | ||
|
|
||
| private static GenericEnumSymbol<?> buildEnumValue(Schema schema, String data) { | ||
| return new org.apache.avro.generic.GenericData.EnumSymbol(schema, data); | ||
| } | ||
|
|
||
| private static GenericFixed buildFixedValue(Schema schema, byte[] data) { | ||
| return new org.apache.avro.generic.GenericData.Fixed(schema, data); | ||
| } | ||
| } |
Oops, something went wrong.