2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018 NOKIA
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=========================================================
20 package org.onap.dcae.collectors.veshv.ves.message.generator.impl
22 import arrow.core.Option
24 import arrow.core.identity
25 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
26 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
27 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
28 import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
29 import javax.json.JsonArray
32 * @author Jakub Dudycz <jakub.dudycz@nokia.com>
35 internal class MessageParametersParserImpl(
36 private val commonEventHeaderParser: CommonEventHeaderParser = CommonEventHeaderParser()
37 ) : MessageParametersParser {
39 override fun parse(request: JsonArray) =
42 .map { it.asJsonObject() }
44 val commonEventHeader = commonEventHeaderParser
45 .parse(json.getJsonObject("commonEventHeader"))
46 .fold({ throw IllegalStateException("Invalid common header") }, ::identity)
47 val messageType = MessageType.valueOf(json.getString("messageType"))
48 val messagesAmount = json.getJsonNumber("messagesAmount")?.longValue()
49 ?: throw NullPointerException("\"messagesAmount\" could not be parsed.")
50 MessageParameters(commonEventHeader, messageType, messagesAmount)
52 }.toEither().mapLeft { ex ->
54 ex.message ?: "Unable to parse message parameters",
55 Option.fromNullable(ex))