diff options
Diffstat (limited to 'src/main/java/org/onap/dcae/multiplestreamreducer')
-rw-r--r-- | src/main/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducer.java | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducer.java b/src/main/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducer.java new file mode 100644 index 00000000..c03ab6bb --- /dev/null +++ b/src/main/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducer.java @@ -0,0 +1,50 @@ +/* + * ============LICENSE_START======================================================= + * PROJECT + * ================================================================================ + * Copyright (C) 2021 Nokia. All rights reserved. + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.multiplestreamreducer; + +import io.vavr.Tuple2; +import io.vavr.collection.Map; + +public class MultipleStreamReducer { + + /** + * Converts configuration from: "one domain many streams" + * to: "one domain one stream" + * + * @param map domain to streams configuration + * @return configuration - one domain one stream + */ + public Map<String, String> reduce(Map<String, String[]> map) { + return map.toStream() + .toMap(Tuple2::_1, v -> v._2[0]); + } + + /** + * Information about the current match: domain to stream + * + * @param domainToStreamConfig domain to stream configuration + * @return current domain to stream information + */ + public String getDomainToStreamsInfo(Map<String, String> domainToStreamConfig) { + return domainToStreamConfig.map(v -> "Domain: " + + v._1 + " has active stream: " + v._2 + System.lineSeparator()) + .reduce((a, b) -> a + b); + } +} |