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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018 NOKIA
* ================================================================================
* 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.collectors.veshv.ves.message.generator.impl
import arrow.core.Option
import arrow.core.Try
import arrow.core.identity
import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
import javax.json.JsonArray
/**
* @author Jakub Dudycz <jakub.dudycz@nokia.com>
* @since July 2018
*/
internal class MessageParametersParserImpl(
private val commonEventHeaderParser: CommonEventHeaderParser = CommonEventHeaderParser()
) : MessageParametersParser {
override fun parse(request: JsonArray) =
Try {
request
.map { it.asJsonObject() }
.map { json ->
val commonEventHeader = commonEventHeaderParser
.parse(json.getJsonObject("commonEventHeader"))
.fold({ throw IllegalStateException("Invalid common header") }, ::identity)
val messageType = MessageType.valueOf(json.getString("messageType"))
val messagesAmount = json.getJsonNumber("messagesAmount")?.longValue()
?: throw NullPointerException("\"messagesAmount\" could not be parsed.")
MessageParameters(commonEventHeader, messageType, messagesAmount)
}
}.toEither().mapLeft { ex ->
ParsingError(
ex.message ?: "Unable to parse message parameters",
Option.fromNullable(ex))
}
}
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