java包中sink连接器的实现

Question

我已经启动了zoo的管理员，Kafka服务器，Kafka生产者和Kafka消费者，我已经把jdbc sql连接器罐下载从合流，并把罐子的路径，我已经提到plugin.path连接独立properties.and我已经运行connect-standalone.bat……\config\connect-standalone.properties…\config\sink-quickstart-mysql.properties没有任何错误，但它有许多警告，它没有开始，但我的数据没有得到反映tables.what我错过了？你能帮帮我吗？我有下面的警告

                                                                                                    org.reflections.ReflectionsException: could not get type for name io.netty.inter
nal.tcnative.SSLPrivateKeyMethod
        at org.reflections.ReflectionUtils.forName(ReflectionUtils.java:312)
        at org.reflections.Reflections.expandSuperTypes(Reflections.java:382)
        at org.reflections.Reflections.<init>(Reflections.java:140)
        at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader$Inte
rnalReflections.<init>(DelegatingClassLoader.java:433)
        at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scan
PluginPath(DelegatingClassLoader.java:325)
        at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scan
UrlsAndAddPlugins(DelegatingClassLoader.java:261)
        at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.init
PluginLoader(DelegatingClassLoader.java:209)
        at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.init
Loaders(DelegatingClassLoader.java:202)
        at org.apache.kafka.connect.runtime.isolation.Plugins.<init>(Plugins.jav
a:60)
        at org.apache.kafka.connect.cli.ConnectStandalone.main(ConnectStandalone
.java:79)
Caused by: java.lang.ClassNotFoundException: io.netty.internal.tcnative.SSLPriva
teKeyMethod
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at org.reflections.ReflectionUtils.forName(ReflectionUtils.java:310)
        ... 9 more

Answer 1

无需自己编写源连接器，除非需要将 kafka 连接到某些外来数据源。像mysql这样的流行工具已经被很好地覆盖了。confluent已经有一个“jdbc-connector”，可以做你想要的。

https://docs . confluent . io/current/connect/Kafka-connect-JDBC/index . html

您将需要一个有效的kafka-连接安装，然后您可以使用HTTP POST将mysql表“连接”到kafka连接API。只需在tables.whitelist属性中指定一个逗号分隔的表列表，您希望将其用作源。例如，像这样的东西……

curl -X POST $KAFKA_CONNECT_API/connectors -H "Content-Type: application/json" -d '{
      "name": "jdbc_source_mysql_01",
      "config": {
              "connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector",
              "connection.url": "jdbc:mysql://mysql:3306/test",
              "connection.user": "connect_user",
              "connection.password": "connect_password",
              "topic.prefix": "mysql-01-",
              "poll.interval.ms" : 3600000,
              "table.whitelist" : "test.accounts",
              "mode":"bulk"
              }
      }'