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.adapters
22 import org.onap.dcae.collectors.veshv.boundary.ConfigurationProvider
23 import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
24 import org.onap.ves.VesEventV5
25 import org.slf4j.LoggerFactory
26 import reactor.core.publisher.Flux
27 import java.io.StringReader
28 import java.time.Duration
30 import java.util.concurrent.atomic.AtomicReference
31 import javax.json.Json
32 import javax.json.JsonObject
36 * @author Jakub Dudycz <jakub.dudycz@nokia.com>
39 internal class ConsulConfigurationProvider(private val url: String, private val http: HttpAdapter)
40 : ConfigurationProvider {
43 private val logger = LoggerFactory.getLogger(ConsulConfigurationProvider::class.java)
44 private var lastConfigurationHash: AtomicReference<Int> = AtomicReference()
46 override fun invoke(): Flux<CollectorConfiguration> =
47 Flux.interval(Duration.ZERO, REFRESH_INTERVAL)
48 .flatMap { http.getResponse(url) }
49 .filter { body -> body.hashCode() != lastConfigurationHash.get() }
50 .doOnNext { body -> lastConfigurationHash.set(body.hashCode()) }
51 .map { str -> getConfigurationJson(str) }
52 .map { json -> createCollectorConfiguration(json) }
54 private fun getConfigurationJson(str: String): JsonObject {
55 val response = Json.createReader(StringReader(str)).readArray().getJsonObject(0)
56 val decodedValue = String(
57 Base64.getDecoder().decode(response.getString("Value")))
58 logger.info("Obtained new configuration from consul:\n$decodedValue")
59 return Json.createReader(StringReader(decodedValue)).readObject()
62 private fun createCollectorConfiguration(configuration: JsonObject): CollectorConfiguration {
64 val routing = configuration.getJsonObject("routing")
66 return CollectorConfiguration(
67 kafkaBootstrapServers = configuration.getString("kafkaBootstrapServers"),
68 routing = org.onap.dcae.collectors.veshv.model.routing {
70 fromDomain(VesEventV5.VesEvent.CommonEventHeader.Domain.forNumber(routing.getInt("fromDomain")))
71 toTopic(routing.getString("toTopic"))
72 withFixedPartitioning()
79 private const val REFRESH_INTERVAL_MINUTES: Long = 5
80 private val REFRESH_INTERVAL = Duration.ofMinutes(REFRESH_INTERVAL_MINUTES)