| /* |
| * 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.samza.system.descriptors; |
| |
| |
| import org.apache.samza.serializers.Serde; |
| |
| /** |
| * A {@link GenericSystemDescriptor} can be used for specifying Samza and system-specific properties of an |
| * input/output system. It can also be used for obtaining {@link GenericInputDescriptor}s and |
| * {@link GenericOutputDescriptor}s, which can be used for specifying any Samza and system-specific properties |
| * of input/output streams. |
| * <p> |
| * If the system provides its own system and stream descriptor implementations, use them instead. |
| * Otherwise, use this {@link GenericSystemDescriptor} to specify Samza-specific properties of the system, |
| * and {@link #withSystemConfigs} to specify additional system specific properties. |
| * <p> |
| * System properties provided in configuration override corresponding properties specified using a descriptor. |
| */ |
| public final class GenericSystemDescriptor extends SystemDescriptor<GenericSystemDescriptor> |
| implements SimpleInputDescriptorProvider, OutputDescriptorProvider { |
| |
| /** |
| * Constructs a {@link GenericSystemDescriptor} instance with no system level serde. |
| * Serdes must be provided explicitly at stream level when getting input or output descriptors. |
| * |
| * @param systemName name of this system |
| * @param factoryClassName name of the SystemFactory class for this system |
| */ |
| public GenericSystemDescriptor(String systemName, String factoryClassName) { |
| super(systemName, factoryClassName, null, null); |
| } |
| |
| @Override |
| public <StreamMessageType> GenericInputDescriptor<StreamMessageType> getInputDescriptor( |
| String streamId, Serde<StreamMessageType> serde) { |
| return new GenericInputDescriptor<>(streamId, this, serde); |
| } |
| |
| @Override |
| public <StreamMessageType> GenericOutputDescriptor<StreamMessageType> getOutputDescriptor( |
| String streamId, Serde<StreamMessageType> serde) { |
| return new GenericOutputDescriptor<>(streamId, this, serde); |
| } |
| } |