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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.impl.adapters
import io.netty.handler.codec.http.HttpStatusClass
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import org.onap.dcae.collectors.veshv.utils.logging.OnapMdc
import reactor.core.publisher.Mono
import reactor.netty.http.client.HttpClient
import java.util.*
/**
* @author Jakub Dudycz <jakub.dudycz@nokia.com>
* @since May 2018
*/
open class HttpAdapter(private val httpClient: HttpClient) {
open fun get(url: String, invocationId: UUID, queryParams: Map<String, Any> = emptyMap()): Mono<String> =
httpClient
.headers { it[INVOCATION_ID_HEADER] = invocationId.toString() }
.get()
.uri(url + createQueryString(queryParams))
.responseSingle { response, content ->
if (response.status().codeClass() == HttpStatusClass.SUCCESS)
content.asString()
else {
val errorMessage = "$url ${response.status().code()} ${response.status().reasonPhrase()}"
Mono.error(IllegalStateException(errorMessage))
}
}
.doOnError {
logger.error { "Failed to get resource on path: $url (${it.localizedMessage})" }
logger.withDebug { log("Nested exception:", it) }
}
private fun createQueryString(params: Map<String, Any>): String {
if (params.isEmpty())
return ""
val builder = StringBuilder("?")
params.forEach { (key, value) ->
builder
.append(key)
.append("=")
.append(value)
.append("&")
}
return builder.removeSuffix("&").toString()
}
companion object {
private val logger = Logger(HttpAdapter::class)
const val INVOCATION_ID_HEADER = "X-${OnapMdc.INVOCATION_ID}"
}
}
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