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/*
* ============LICENSE_START====================================
* DCAEGEN2-SERVICES-SDK
* =========================================================
* Copyright (C) 2019 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.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import io.vavr.collection.Stream;
import java.io.IOException;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.exceptions.StreamParsingException;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.DataStreamDirection;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.ImmutableRawDataStream;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.RawDataStream;
/**
* @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
* @since March 2019
*/
public final class DataStreamUtils {
public static Stream<RawDataStream<JsonObject>> mapJsonToStreams(JsonElement streamsJson,
DataStreamDirection direction) {
return Stream.ofAll(streamsJson.getAsJsonObject().entrySet())
.map(namedSinkJson -> {
final JsonObject jsonObject = namedSinkJson.getValue().getAsJsonObject();
return rawDataStream(namedSinkJson.getKey(), direction, jsonObject);
});
}
public static void assertStreamType(
RawDataStream<JsonObject> json,
String expectedType,
DataStreamDirection expectedDirection) {
if (!json.type().equals(expectedType)) {
throw new StreamParsingException(
"Invalid stream type. Expected '" + expectedType + "', but was '" + json.type() + "'");
}
if (json.direction() != expectedDirection) {
throw new StreamParsingException(
"Invalid stream direction. Expected '" + expectedDirection + "', but was '" + json.direction()
+ "'");
}
}
public static RawDataStream<JsonObject> readSourceFromResource(String resource) throws IOException {
return rawDataStream(resource, DataStreamDirection.SOURCE, GsonUtils.readObjectFromResource(resource));
}
public static RawDataStream<JsonObject> readSinkFromResource(String resource) throws IOException {
return rawDataStream(resource, DataStreamDirection.SINK, GsonUtils.readObjectFromResource(resource));
}
private static RawDataStream<JsonObject> rawDataStream(String name, DataStreamDirection direction, JsonObject json) {
return ImmutableRawDataStream.<JsonObject>builder()
.name(name)
.direction(direction)
.type(GsonUtils.requiredString(json, "type"))
.descriptor(json)
.build();
}
}
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