/* * Copyright 2019 Ververica GmbH. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.ververica.statefun.flink.io.kafka; import com.google.protobuf.Message; import com.ververica.statefun.flink.io.spi.JsonIngressSpec; import com.ververica.statefun.sdk.io.IngressIdentifier; import com.ververica.statefun.sdk.kafka.Constants; import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode; import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper; import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.dataformat.yaml.YAMLFactory; import org.apache.flink.streaming.api.functions.source.SourceFunction; import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer; import org.junit.Test; import java.io.IOException; import java.net.URL; import static org.hamcrest.CoreMatchers.instanceOf; import static org.junit.Assert.assertThat; public class ProtobufKafkaSourceProviderTest { @Test public void exampleUsage() { JsonNode ingressDefinition = fromPath("protobuf-kafka-ingress.yaml"); JsonIngressSpec<?> spec = new JsonIngressSpec<>( Constants.PROTOBUF_KAFKA_INGRESS_TYPE, new IngressIdentifier<>(Message.class, "foo", "bar"), ingressDefinition); ProtobufKafkaSourceProvider provider = new ProtobufKafkaSourceProvider(); SourceFunction<?> source = provider.forSpec(spec); assertThat(source, instanceOf(FlinkKafkaConsumer.class)); } private static JsonNode fromPath(String path) { URL moduleUrl = ProtobufKafkaSourceProvider.class.getClassLoader().getResource(path); ObjectMapper mapper = new ObjectMapper(new YAMLFactory()); try { return mapper.readTree(moduleUrl); } catch (IOException e) { throw new RuntimeException(e); } } }