2 * ============LICENSE_START====================================
3 * DCAEGEN2-SERVICES-SDK
4 * =========================================================
5 * Copyright (C) 2019 Nokia. All rights reserved.
6 * =========================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=====================================
21 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams;
23 import com.google.gson.JsonElement;
24 import com.google.gson.JsonObject;
25 import io.vavr.collection.Stream;
26 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
27 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.DataStreamUtils;
28 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.DataStreamDirection;
29 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.RawDataStream;
32 * Extract streams from the application configuration represented as GSON JsonObject.
37 * "application_config_1": "value_1,
39 * "streams_publishes": {
41 * "type": "message_router",
47 * "type": "data_router",
53 * "streams_subscribes": {
55 * "type": "message_router",
64 * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
68 public final class DataStreams {
70 private DataStreams() {
75 * Extracts sources from application configuration. Parses <em>streams_subscribes</em> subtree.
79 * For sample input it will yield:
86 * type="message_router"
88 * descriptor=JsonObject{
89 * type: "message_router",
98 * @param rootJson - the full application configuration
99 * @return io.vavr.collection.Stream of data streams
101 public static Stream<RawDataStream<JsonObject>> namedSources(JsonObject rootJson) {
102 return createCollectionOfStreams(rootJson, DataStreamDirection.SOURCE);
108 * Extracts sinks from application configuration. Parses <em>streams_publishes</em> subtree.
112 * For sample input it will yield:
119 * type="message_router"
121 * descriptor=JsonObject{
122 * type: "message_router",
132 * descriptor=JsonObject{
133 * type: "data_router"
142 * @param rootJson - the full application configuration
143 * @return io.vavr.collection.Stream of data streams
145 public static Stream<RawDataStream<JsonObject>> namedSinks(JsonObject rootJson) {
146 return createCollectionOfStreams(rootJson, DataStreamDirection.SINK);
149 private static Stream<RawDataStream<JsonObject>> createCollectionOfStreams(JsonObject rootJson, DataStreamDirection direction) {
150 final JsonElement streamsJson = rootJson.get(direction.configurationKey());
151 return streamsJson == null
153 : DataStreamUtils.mapJsonToStreams(streamsJson, direction);