package com.amazonaws.services.kinesisanalytics; import org.apache.flink.api.common.serialization.SerializationSchema; import org.apache.flink.api.common.serialization.SimpleStringSchema; public class CustomSimpleStringSerializationSchema extends SimpleStringSchema { @Override public void open(SerializationSchema.InitializationContext context) throws Exception { // write keystore to /tmp // NOTE: make sure that keystore is in JKS format for KDA/Flink. See README for details CustomFlinkKafkaUtil.initializeKafkaTruststore(); super.open(context); } }