-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
added support for avro converter and schema registry
- Loading branch information
Showing
16 changed files
with
425 additions
and
40 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
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
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
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| { | ||
| "name" : "jr-avro-quickstart", | ||
| "config": { | ||
| "connector.class" : "io.jrnd.kafka.connect.connector.JRSourceConnector", | ||
| "template" : "store", | ||
| "topic": "store", | ||
| "frequency" : 5000, | ||
| "objects": 5, | ||
| "value.converter": "io.confluent.connect.avro.AvroConverter", | ||
| "value.converter.schema.registry.url": "http://schema-registry:8081", | ||
| "tasks.max": 1 | ||
| } | ||
| } |
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
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
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
157 changes: 157 additions & 0 deletions
157
src/main/java/io/jrnd/kafka/connect/connector/AvroHelper.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 +1,157 @@ | ||
| // Copyright © 2024 JR team | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| package io.jrnd.kafka.connect.connector; | ||
|
|
||
| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.JsonNode; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import org.apache.avro.Schema; | ||
| import org.apache.avro.SchemaBuilder; | ||
|
|
||
| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
||
| public class AvroHelper { | ||
|
|
||
| public static Schema createAvroSchemaFromJson(String recordName, String jsonString) throws JsonProcessingException { | ||
| ObjectMapper objectMapper = new ObjectMapper(); | ||
| JsonNode jsonNode = objectMapper.readTree(jsonString); | ||
|
|
||
| return buildAvroSchema(recordName, jsonNode); | ||
| } | ||
|
|
||
| public static org.apache.kafka.connect.data.Schema convertAvroToConnectSchema(Schema avroSchema) { | ||
| switch (avroSchema.getType()) { | ||
| case STRING: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.string().build(); | ||
| case INT: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.int32().build(); | ||
| case LONG: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.int64().build(); | ||
| case FLOAT: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.float32().build(); | ||
| case DOUBLE: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.float64().build(); | ||
| case BOOLEAN: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.bool().build(); | ||
| case BYTES: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.bytes().build(); | ||
| case ARRAY: | ||
| org.apache.kafka.connect.data.Schema elementSchema = convertAvroToConnectSchema(avroSchema.getElementType()); | ||
| return org.apache.kafka.connect.data.SchemaBuilder.array(elementSchema).build(); | ||
| case MAP: | ||
| org.apache.kafka.connect.data.Schema valueSchema = convertAvroToConnectSchema(avroSchema.getValueType()); | ||
| return org.apache.kafka.connect.data.SchemaBuilder.map(org.apache.kafka.connect.data.Schema.STRING_SCHEMA, valueSchema).build(); | ||
| case RECORD: | ||
| return convertRecord(avroSchema); | ||
| case ENUM: | ||
| return org.apache.kafka.connect.data.SchemaBuilder.string().build(); // Kafka Connect doesn't have native ENUM support, so use string. | ||
| case UNION: | ||
| return handleUnion(avroSchema); | ||
| default: | ||
| throw new IllegalArgumentException("Unsupported Avro type: " + avroSchema.getType()); | ||
| } | ||
| } | ||
|
|
||
| private static org.apache.kafka.connect.data.Schema convertRecord(Schema avroSchema) { | ||
| org.apache.kafka.connect.data.SchemaBuilder structBuilder = org.apache.kafka.connect.data.SchemaBuilder.struct().name(avroSchema.getName()); | ||
| for (Schema.Field field : avroSchema.getFields()) { | ||
| org.apache.kafka.connect.data.Schema fieldSchema = convertAvroToConnectSchema(field.schema()); | ||
| structBuilder.field(field.name(), fieldSchema); | ||
| } | ||
| return structBuilder.build(); | ||
| } | ||
|
|
||
| private static org.apache.kafka.connect.data.Schema handleUnion(Schema unionSchema) { | ||
| List<Schema> types = unionSchema.getTypes(); | ||
| if (types.size() == 2 && types.contains(Schema.create(Schema.Type.NULL))) { | ||
| // Handle nullable types (e.g., ["null", "string"]) | ||
| Schema nonNullSchema = types.get(0).getType() == Schema.Type.NULL ? types.get(1) : types.get(0); | ||
| return convertAvroToConnectSchema(nonNullSchema); | ||
| } else { | ||
| // If it's not a nullable type, pick the first non-null type or handle complex cases | ||
| for (Schema schema : types) { | ||
| if (schema.getType() != Schema.Type.NULL) { | ||
| return convertAvroToConnectSchema(schema); | ||
| } | ||
| } | ||
| throw new IllegalArgumentException("Unsupported union schema: " + unionSchema); | ||
| } | ||
| } | ||
|
|
||
| private static Schema buildAvroSchema(String recordName, JsonNode jsonNode) { | ||
| SchemaBuilder.RecordBuilder<Schema> recordBuilder = SchemaBuilder.record(recordName); | ||
| SchemaBuilder.FieldAssembler<Schema> fieldAssembler = recordBuilder.fields(); | ||
|
|
||
| Iterator<Map.Entry<String, JsonNode>> fields = jsonNode.fields(); | ||
| while (fields.hasNext()) { | ||
| Map.Entry<String, JsonNode> field = fields.next(); | ||
| String fieldName = field.getKey(); | ||
| JsonNode fieldValue = field.getValue(); | ||
|
|
||
| if (fieldValue.isTextual()) { | ||
| fieldAssembler.name(fieldName).type().stringType().noDefault(); | ||
| } else if (fieldValue.isInt()) { | ||
| fieldAssembler.name(fieldName).type().intType().noDefault(); | ||
| } else if (fieldValue.isLong()) { | ||
| fieldAssembler.name(fieldName).type().longType().noDefault(); | ||
| } else if (fieldValue.isBoolean()) { | ||
| fieldAssembler.name(fieldName).type().booleanType().noDefault(); | ||
| } else if (fieldValue.isDouble()) { | ||
| fieldAssembler.name(fieldName).type().doubleType().noDefault(); | ||
| } else if (fieldValue.isObject()) { | ||
| Schema nestedSchema = buildAvroSchema(fieldName, fieldValue); | ||
| fieldAssembler.name(fieldName).type(nestedSchema).noDefault(); | ||
| } else if (fieldValue.isArray()) { | ||
| if (fieldValue.size() > 0) { | ||
| JsonNode firstElement = fieldValue.get(0); | ||
| Schema elementType = getSchemaFromJsonNode(firstElement, fieldName); | ||
| fieldAssembler.name(fieldName).type().array().items(elementType).noDefault(); | ||
| } else { | ||
| fieldAssembler.name(fieldName).type().array().items().stringType().noDefault(); // Default empty arrays to strings | ||
| } | ||
| } else { | ||
| fieldAssembler.name(fieldName).type().nullable().stringType().noDefault(); | ||
| } | ||
| } | ||
| return fieldAssembler.endRecord(); | ||
| } | ||
|
|
||
| private static Schema getSchemaFromJsonNode(JsonNode node, String fieldName) { | ||
| if (node.isTextual()) { | ||
| return Schema.create(Schema.Type.STRING); | ||
| } else if (node.isInt()) { | ||
| return Schema.create(Schema.Type.INT); | ||
| } else if (node.isLong()) { | ||
| return Schema.create(Schema.Type.LONG); | ||
| } else if (node.isBoolean()) { | ||
| return Schema.create(Schema.Type.BOOLEAN); | ||
| } else if (node.isDouble()) { | ||
| return Schema.create(Schema.Type.DOUBLE); | ||
| } else if (node.isObject()) { | ||
| return buildAvroSchema(fieldName, node); | ||
| } else { | ||
| return Schema.create(Schema.Type.STRING); | ||
| } | ||
| } | ||
| } | ||
|
|
Oops, something went wrong.