| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.flink.statefun.flink.io.kinesis.polyglot; |
| |
| import static org.apache.flink.statefun.flink.io.kinesis.polyglot.AwsAuthSpecJsonParser.optionalAwsCredentials; |
| import static org.apache.flink.statefun.flink.io.kinesis.polyglot.AwsAuthSpecJsonParser.optionalAwsRegion; |
| import static org.apache.flink.statefun.flink.io.kinesis.polyglot.KinesisIngressSpecJsonParser.clientConfigProperties; |
| import static org.apache.flink.statefun.flink.io.kinesis.polyglot.KinesisIngressSpecJsonParser.optionalStartupPosition; |
| import static org.apache.flink.statefun.flink.io.kinesis.polyglot.KinesisIngressSpecJsonParser.routableStreams; |
| |
| import com.google.protobuf.Message; |
| import java.util.ArrayList; |
| import java.util.Map; |
| import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode; |
| import org.apache.flink.statefun.flink.io.generated.RoutingConfig; |
| import org.apache.flink.statefun.flink.io.kinesis.KinesisSourceProvider; |
| import org.apache.flink.statefun.flink.io.spi.JsonIngressSpec; |
| import org.apache.flink.statefun.flink.io.spi.SourceProvider; |
| import org.apache.flink.statefun.sdk.io.IngressIdentifier; |
| import org.apache.flink.statefun.sdk.io.IngressSpec; |
| import org.apache.flink.statefun.sdk.kinesis.ingress.KinesisIngressBuilder; |
| import org.apache.flink.statefun.sdk.kinesis.ingress.KinesisIngressBuilderApiExtension; |
| import org.apache.flink.statefun.sdk.kinesis.ingress.KinesisIngressDeserializer; |
| import org.apache.flink.statefun.sdk.kinesis.ingress.KinesisIngressSpec; |
| import org.apache.flink.streaming.api.functions.source.SourceFunction; |
| |
| public final class RoutableProtobufKinesisSourceProvider implements SourceProvider { |
| |
| private final KinesisSourceProvider delegateProvider = new KinesisSourceProvider(); |
| |
| @Override |
| public <T> SourceFunction<T> forSpec(IngressSpec<T> spec) { |
| final KinesisIngressSpec<T> kinesisIngressSpec = asKinesisIngressSpec(spec); |
| return delegateProvider.forSpec(kinesisIngressSpec); |
| } |
| |
| private static <T> KinesisIngressSpec<T> asKinesisIngressSpec(IngressSpec<T> spec) { |
| if (!(spec instanceof JsonIngressSpec)) { |
| throw new IllegalArgumentException("Wrong type " + spec.type()); |
| } |
| JsonIngressSpec<T> casted = (JsonIngressSpec<T>) spec; |
| |
| IngressIdentifier<T> id = casted.id(); |
| Class<T> producedType = casted.id().producedType(); |
| if (!Message.class.isAssignableFrom(producedType)) { |
| throw new IllegalArgumentException( |
| "ProtocolBuffer based Kinesis ingress is only able to produce types that derive from " |
| + Message.class.getName() |
| + " but " |
| + producedType.getName() |
| + " is provided."); |
| } |
| |
| JsonNode specJson = casted.specJson(); |
| |
| KinesisIngressBuilder<T> kinesisIngressBuilder = KinesisIngressBuilder.forIdentifier(id); |
| |
| optionalAwsRegion(specJson).ifPresent(kinesisIngressBuilder::withAwsRegion); |
| optionalAwsCredentials(specJson).ifPresent(kinesisIngressBuilder::withAwsCredentials); |
| optionalStartupPosition(specJson).ifPresent(kinesisIngressBuilder::withStartupPosition); |
| clientConfigProperties(specJson) |
| .entrySet() |
| .forEach( |
| entry -> |
| kinesisIngressBuilder.withClientConfigurationProperty( |
| entry.getKey(), entry.getValue())); |
| |
| Map<String, RoutingConfig> routableStreams = routableStreams(specJson); |
| KinesisIngressBuilderApiExtension.withDeserializer( |
| kinesisIngressBuilder, deserializer(routableStreams)); |
| kinesisIngressBuilder.withStreams(new ArrayList<>(routableStreams.keySet())); |
| |
| return kinesisIngressBuilder.build(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private static <T> KinesisIngressDeserializer<T> deserializer( |
| Map<String, RoutingConfig> routingConfig) { |
| // this cast is safe since we've already checked that T is a Message |
| return (KinesisIngressDeserializer<T>) |
| new RoutableProtobufKinesisIngressDeserializer(routingConfig); |
| } |
| } |