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Add support for Apache Avro Serialization #55

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merged 5 commits into from
Mar 25, 2021
Merged

Add support for Apache Avro Serialization #55

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a2806f4
Add avro support
Vathsan Dec 7, 2020
1216a15
Improve KafkaAvroSerializer support
Dec 17, 2020
e444f09
Add basic auth support for schema registry
Vathsan Jan 26, 2021
41eee76
Improve CachedRegistryClient's performance
Vathsan Jan 27, 2021
2048568
Add support for missing schema types
Vathsan Feb 10, 2021
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27 changes: 27 additions & 0 deletions pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -39,9 +39,20 @@
<product.ei.version>6.5.0</product.ei.version>
<synapse.version>2.1.7-wso2v95</synapse.version>
<skip-tests>true</skip-tests>
<confluent.version>5.4.0</confluent.version>
<avro.version>1.8.2</avro.version>
</properties>

<dependencies>
<dependency>
<groupId>io.confluent</groupId>
<artifactId>kafka-avro-serializer</artifactId>
<version>${confluent.version}</version>
</dependency><dependency>
<groupId>org.apache.avro</groupId>
<artifactId>avro</artifactId>
<version>${avro.version}</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
Expand Down Expand Up @@ -212,6 +223,12 @@
<version>${product.ei.version}</version>
</dependency>

<dependency>
<groupId>io.confluent</groupId>
<artifactId>kafka-schema-registry-client</artifactId>
<version>${confluent.version}</version>
</dependency>

<dependency>
<groupId>org.wso2.ei</groupId>
<artifactId>automation-extensions</artifactId>
Expand Down Expand Up @@ -376,6 +393,16 @@
<checksumPolicy>ignore</checksumPolicy>
</releases>
</repository>
<repository>
<id>confluent-releases</id>
<url>https://packages.confluent.io/maven/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>

<distributionManagement>
Expand Down
6 changes: 6 additions & 0 deletions src/main/java/org/wso2/carbon/connector/KafkaConfigConnector.java
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Expand Up @@ -44,6 +44,8 @@ public void connect(MessageContext messageContext) {
.getProperty(KafkaConnectConstants.KAFKA_KEY_SERIALIZER_CLASS);
String valueSerializationClass = (String) messageContext
.getProperty(KafkaConnectConstants.KAFKA_VALUE_SERIALIZER_CLASS);
String schemaRegistryUrl = (String) messageContext
.getProperty(KafkaConnectConstants.KAFKA_SCHEMA_REGISTRY_URL);
String bufferMemory = (String) messageContext
.getProperty(KafkaConnectConstants.KAFKA_BUFFER_MEMORY);
String compressionCodec = (String) messageContext
Expand Down Expand Up @@ -102,6 +104,10 @@ public void connect(MessageContext messageContext) {
KafkaConnectConstants.DEFAULT_VALUE_SERIALIZER_CLASS);
}

if (StringUtils.isEmpty(schemaRegistryUrl)) {
messageContext.setProperty(KafkaConnectConstants.KAFKA_SCHEMA_REGISTRY_URL,
KafkaConnectConstants.DEFAULT_SCHEMA_REGISTRY_URL);
}
if (StringUtils.isEmpty(bufferMemory)) {
messageContext.setProperty(KafkaConnectConstants.KAFKA_BUFFER_MEMORY,
KafkaConnectConstants.DEFAULT_BUFFER_MEMORY);
Expand Down
14 changes: 14 additions & 0 deletions src/main/java/org/wso2/carbon/connector/KafkaConnectConstants.java
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Expand Up @@ -75,6 +75,8 @@ public class KafkaConnectConstants {
public static final String SSL_KEYMANAGER_ALGORITHM = "ssl.keymanager.algorithm";
public static final String SSL_SECURE_RANDOM_IMPLEMENTATION = "";
public static final String SSL_TRUSTMANAGER_ALGORITHM = "ssl.trustmanager.algorithm";
// Confluence schema registry url
public static final String SCHEMA_REGISTRY_URL = "schema.registry.url";

// Configuration properties parameter
public static final String PARAM_TOPIC = "topic";
Expand Down Expand Up @@ -167,11 +169,23 @@ public class KafkaConnectConstants {
public static final String DEFAULT_METRICS_SAMPLE_WINDOW = "30000";
public static final String DEFAULT_RECONNECT_BACKOFF_TIME = "50";
public static final String DEFAULT_RETRY_BACKOFF_TIME = "100";
public static final String DEFAULT_SCHEMA_REGISTRY_URL = "http://localhost:8081";

// Maximum default connection pool size
public static final String DEFAULT_CONNECTION_POOL_MAX_SIZE = "-1";

// Whether connection pooling is enabled
public static final String CONNECTION_POOLING_ENABLED = "kafka.poolingEnabled";

// Avro message constants
public static final String KAFKA_SCHEMA_REGISTRY_URL = "kafka.schemaRegistryUrl";
public static final String KAFKA_SCHEMA_REGISTRY_BASIC_AUTH_CREDENTIALS_SOURCE = "kafka.basicAuthCredentialsSource";
public static final String KAFKA_SCHEMA_REGISTRY_BASIC_AUTH_USER_INFO = "kafka.basicAuthUserInfo";
public static final String KAFKA_KEY_SCHEMA_ID = "keySchemaId";
public static final String KAFKA_KEY_SCHEMA = "keySchema";
public static final String KAFKA_KEY = "key";
public static final String KAFKA_VALUE_SCHEMA_ID = "valueSchemaId";
public static final String KAFKA_VALUE_SCHEMA = "valueSchema";
public static final String KAFKA_VALUE = "value";
public static final String KAFKA_AVRO_SERIALIZER = "io.confluent.kafka.serializers.KafkaAvroSerializer";
}
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