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.impl
22 import arrow.core.Either
23 import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
24 import org.onap.dcae.collectors.veshv.domain.headerRequiredFieldDescriptors
25 import org.onap.dcae.collectors.veshv.domain.vesEventListenerVersionRegex
26 import org.onap.dcae.collectors.veshv.model.VesMessage
27 import org.onap.ves.VesEventOuterClass.CommonEventHeader
29 typealias ValidationFailMessage = () -> String
30 typealias ValidationSuccessMessage = () -> String
31 typealias ValidationResult = Either<ValidationFailMessage, ValidationSuccessMessage>
33 internal object MessageValidator {
35 fun validateFrameMessage(message: WireFrameMessage): ValidationResult =
36 message.validate().fold({
37 Either.left { "Invalid wire frame header, reason: ${it.message}" }
39 Either.right { "Wire frame header is valid" }
42 fun validateProtobufMessage(message: VesMessage): ValidationResult =
43 if (message.isValid()) {
44 Either.right { "Protocol buffers message is valid" }
46 Either.left { "Unsupported protocol buffers message." }
49 fun VesMessage.isValid() = allMandatoryFieldsArePresent(this.header)
50 .and(vesEventListenerVersionRegex.matches(header.vesEventListenerVersion))
52 private fun allMandatoryFieldsArePresent(header: CommonEventHeader) =
53 headerRequiredFieldDescriptors
54 .all { fieldDescriptor -> header.hasField(fieldDescriptor) }