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DBZ-6721 Add local vgtid transformation
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103 changes: 103 additions & 0 deletions
103
src/main/java/io/debezium/connector/vitess/transforms/UseLocalVgtid.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* | ||
| * Copyright Debezium Authors. | ||
| * | ||
| * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0 | ||
| */ | ||
|
|
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| package io.debezium.connector.vitess.transforms; | ||
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| import static io.debezium.connector.vitess.SourceInfo.SHARD_KEY; | ||
| import static io.debezium.connector.vitess.SourceInfo.VGTID_KEY; | ||
|
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| import java.util.Map; | ||
|
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| import org.apache.kafka.common.config.ConfigDef; | ||
| import org.apache.kafka.connect.components.Versioned; | ||
| import org.apache.kafka.connect.connector.ConnectRecord; | ||
| import org.apache.kafka.connect.data.Field; | ||
| import org.apache.kafka.connect.data.Schema; | ||
| import org.apache.kafka.connect.data.Struct; | ||
| import org.apache.kafka.connect.transforms.Transformation; | ||
|
|
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| import io.debezium.config.Configuration; | ||
| import io.debezium.connector.vitess.Module; | ||
| import io.debezium.connector.vitess.Vgtid; | ||
| import io.debezium.transforms.SmtManager; | ||
|
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| public class UseLocalVgtid<R extends ConnectRecord<R>> implements Transformation<R>, Versioned { | ||
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| private SmtManager<R> smtManager; | ||
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| @Override | ||
| public R apply(R record) { | ||
| if (record.value() instanceof Struct) { | ||
| Struct value = (Struct) record.value(); | ||
| Schema schema = record.valueSchema(); | ||
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| String localVgtid = getLocalVgtid(value); | ||
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| if (localVgtid != null) { | ||
| Struct updatedValue = modifyStruct("", value, schema, localVgtid); | ||
| return record.newRecord(record.topic(), record.kafkaPartition(), record.keySchema(), record.key(), | ||
| schema, updatedValue, record.timestamp()); | ||
| } | ||
|
|
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| } | ||
| return record; | ||
| } | ||
|
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| private String getLocalVgtid(Struct value) { | ||
| if (value.schema().field("source") != null) { | ||
| Struct sourceStruct = (Struct) value.get("source"); | ||
| String shard = sourceStruct.getString(SHARD_KEY); | ||
| String vgtid = sourceStruct.getString(VGTID_KEY); | ||
| return Vgtid.of(vgtid).getLocalVgtid(shard).toString(); | ||
| } | ||
| else { | ||
| return null; | ||
| } | ||
| } | ||
|
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| private Struct modifyStruct(String previousPath, Struct struct, Schema schema, String localVgtid) { | ||
| // change to work only with exact path match | ||
| Struct updatedStruct = new Struct(schema); | ||
| for (Field field : schema.fields()) { | ||
| String fullName = previousPath.isEmpty() ? field.name() : previousPath + "." + field.name(); | ||
| Object fieldValue = struct.get(field); | ||
| if (fieldValue instanceof Struct) { | ||
| Struct nestedStruct = (Struct) fieldValue; | ||
| Struct updatedNestedStruct = modifyStruct(fullName, nestedStruct, field.schema(), localVgtid); | ||
| updatedStruct.put(field, updatedNestedStruct); | ||
| } | ||
| else { | ||
| if (fullName.equals("source." + VGTID_KEY)) { | ||
| updatedStruct.put(field, localVgtid); | ||
| } | ||
| else { | ||
| updatedStruct.put(field, fieldValue); | ||
| } | ||
| } | ||
| } | ||
| return updatedStruct; | ||
| } | ||
|
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| @Override | ||
| public ConfigDef config() { | ||
| return new ConfigDef(); | ||
| } | ||
|
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| @Override | ||
| public void close() { | ||
| } | ||
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| @Override | ||
| public void configure(Map<String, ?> props) { | ||
| final Configuration config = Configuration.from(props); | ||
| smtManager = new SmtManager<>(config); | ||
| } | ||
|
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| @Override | ||
| public String version() { | ||
| return Module.version(); | ||
| } | ||
| } |
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139 changes: 139 additions & 0 deletions
139
src/test/java/io/debezium/connector/vitess/transforms/UseLocalVgtidTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| /* | ||
| * Copyright Debezium Authors. | ||
| * | ||
| * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0 | ||
| */ | ||
|
|
||
| package io.debezium.connector.vitess.transforms; | ||
|
|
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| import static io.debezium.connector.vitess.SourceInfo.SHARD_KEY; | ||
| import static io.debezium.connector.vitess.SourceInfo.VGTID_KEY; | ||
| import static io.debezium.connector.vitess.VgtidTest.TEST_GTID; | ||
| import static io.debezium.connector.vitess.VgtidTest.TEST_KEYSPACE; | ||
| import static io.debezium.connector.vitess.VgtidTest.TEST_SHARD; | ||
| import static io.debezium.connector.vitess.VgtidTest.VGTID_JSON; | ||
| import static org.assertj.core.api.Assertions.assertThat; | ||
|
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| import org.apache.kafka.connect.data.Schema; | ||
| import org.apache.kafka.connect.data.SchemaBuilder; | ||
| import org.apache.kafka.connect.data.Struct; | ||
| import org.apache.kafka.connect.source.SourceRecord; | ||
| import org.junit.Test; | ||
|
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| import io.debezium.data.Envelope; | ||
| import io.debezium.schema.SchemaFactory; | ||
|
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| public class UseLocalVgtidTest { | ||
|
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| public static final String LOCAL_VGTID_JSON_WITH_LAST_PK_TEMPLATE = "[" + | ||
| "{\"keyspace\":\"%s\",\"shard\":\"%s\",\"gtid\":\"%s\",\"table_p_ks\":[]}" + | ||
| "]"; | ||
|
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| public static final String LOCAL_VGTID_JSON_WITH_LAST_PK = String.format( | ||
| LOCAL_VGTID_JSON_WITH_LAST_PK_TEMPLATE, | ||
| TEST_KEYSPACE, | ||
| TEST_SHARD, | ||
| TEST_GTID); | ||
|
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| @Test | ||
| public void shouldNotReplaceATableWithVgtidColumn() { | ||
| Schema recordSchema = SchemaBuilder.struct() | ||
| .field(VGTID_KEY, Schema.STRING_SCHEMA) | ||
| .build(); | ||
| Schema sourceSchema = SchemaBuilder.struct() | ||
| .field(VGTID_KEY, Schema.STRING_SCHEMA) | ||
| .field(SHARD_KEY, Schema.STRING_SCHEMA).build(); | ||
| Envelope envelope = SchemaFactory.get().datatypeEnvelopeSchema() | ||
| .withRecord(recordSchema) | ||
| .withSource(sourceSchema) | ||
| .build(); | ||
| Schema valueSchema = envelope.schema(); | ||
| Struct valueStruct = new Struct(valueSchema) | ||
| .put("before", new Struct(recordSchema).put(VGTID_KEY, "foo")) | ||
| .put("after", new Struct(recordSchema).put(VGTID_KEY, "foo")) | ||
| .put("op", "c") | ||
| .put("source", new Struct(sourceSchema) | ||
| .put(VGTID_KEY, VGTID_JSON) | ||
| .put(SHARD_KEY, TEST_SHARD)); | ||
|
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| SourceRecord sourceRecord = new SourceRecord( | ||
| null, | ||
| null, | ||
| "topic", | ||
| 0, | ||
| null, | ||
| null, | ||
| valueSchema, | ||
| valueStruct, | ||
| null); | ||
|
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| UseLocalVgtid<SourceRecord> useLocalVgtid = new UseLocalVgtid(); | ||
| SourceRecord result = useLocalVgtid.apply(sourceRecord); | ||
|
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| Envelope expectedEnvelope = SchemaFactory.get().datatypeEnvelopeSchema() | ||
| .withRecord(recordSchema) | ||
| .withSource(sourceSchema) | ||
| .build(); | ||
| Schema expectedValueSchema = expectedEnvelope.schema(); | ||
| Struct expectedValueStruct = new Struct(expectedValueSchema) | ||
| .put("before", new Struct(recordSchema).put(VGTID_KEY, "foo")) | ||
| .put("after", new Struct(recordSchema).put(VGTID_KEY, "foo")) | ||
| .put("op", "c") | ||
| .put("source", new Struct(sourceSchema) | ||
| .put(VGTID_KEY, LOCAL_VGTID_JSON_WITH_LAST_PK) | ||
| .put(SHARD_KEY, TEST_SHARD)); | ||
|
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| assertThat(result.value()).isEqualTo(expectedValueStruct); | ||
| } | ||
|
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| @Test | ||
| public void shouldReplaceWithLocalVgtid() { | ||
| Schema recordSchema = SchemaBuilder.struct() | ||
| .field("id", Schema.STRING_SCHEMA) | ||
| .build(); | ||
| Schema sourceSchema = SchemaBuilder.struct() | ||
| .field(VGTID_KEY, Schema.STRING_SCHEMA) | ||
| .field(SHARD_KEY, Schema.STRING_SCHEMA).build(); | ||
| Envelope envelope = SchemaFactory.get().datatypeEnvelopeSchema() | ||
| .withRecord(recordSchema) | ||
| .withSource(sourceSchema) | ||
| .build(); | ||
| Schema valueSchema = envelope.schema(); | ||
| Struct valueStruct = new Struct(valueSchema) | ||
| .put("before", new Struct(recordSchema).put("id", "foo")) | ||
| .put("after", new Struct(recordSchema).put("id", "foo")) | ||
| .put("op", "c") | ||
| .put("source", new Struct(sourceSchema) | ||
| .put(VGTID_KEY, VGTID_JSON) | ||
| .put(SHARD_KEY, TEST_SHARD)); | ||
|
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| SourceRecord sourceRecord = new SourceRecord( | ||
| null, | ||
| null, | ||
| "topic", | ||
| 0, | ||
| null, | ||
| null, | ||
| valueSchema, | ||
| valueStruct, | ||
| null); | ||
|
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| UseLocalVgtid<SourceRecord> useLocalVgtid = new UseLocalVgtid(); | ||
| SourceRecord result = useLocalVgtid.apply(sourceRecord); | ||
|
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| Envelope expectedEnvelope = SchemaFactory.get().datatypeEnvelopeSchema() | ||
| .withRecord(recordSchema) | ||
| .withSource(sourceSchema) | ||
| .build(); | ||
| Schema expectedValueSchema = expectedEnvelope.schema(); | ||
| Struct expectedValueStruct = new Struct(expectedValueSchema) | ||
| .put("before", new Struct(recordSchema).put("id", "foo")) | ||
| .put("after", new Struct(recordSchema).put("id", "foo")) | ||
| .put("op", "c") | ||
| .put("source", new Struct(sourceSchema) | ||
| .put(VGTID_KEY, LOCAL_VGTID_JSON_WITH_LAST_PK) | ||
| .put(SHARD_KEY, TEST_SHARD)); | ||
|
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| assertThat(result.value()).isEqualTo(expectedValueStruct); | ||
| } | ||
| } |