diff options
author | Jakub Zieba <jakub.zieba@nokia.com> | 2018-08-28 14:07:56 +0200 |
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committer | Jakub Zieba <jakub.zieba@nokia.com> | 2018-08-29 13:09:46 +0200 |
commit | 4fbb9e8ad097c9ec3c3434ba257e887fb3a64699 (patch) | |
tree | b244acb1fd41b987afd514205636f16fe6d5e76e /prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/HttpGetClient.java | |
parent | 5b4e3b195960af161604eccb1c1c805bb91c6648 (diff) |
Revert web server to prh, fix configuration
Revert web server to prh, becaue it is used by health check
Fix cloud configuration fetching
Additional code refactoring
Change-Id: Ic3d6f4c266064436e2701ec3ef3a7534b2d5b8b4
Issue-ID: DCAEGEN2-696
Signed-off-by: Jakub Zieba <jakub.zieba@nokia.com>
Diffstat (limited to 'prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/HttpGetClient.java')
-rw-r--r-- | prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/HttpGetClient.java | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/HttpGetClient.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/HttpGetClient.java new file mode 100644 index 00000000..56ab484b --- /dev/null +++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/HttpGetClient.java @@ -0,0 +1,93 @@ +/* + * ============LICENSE_START======================================================= + * PNF-REGISTRATION-HANDLER + * ================================================================================ + * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved. + * ================================================================================ + * 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.dcaegen2.services.prh.service; + +import com.google.gson.Gson; +import com.google.gson.JsonSyntaxException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.http.HttpStatus; +import org.springframework.web.reactive.function.client.ClientResponse; +import org.springframework.web.reactive.function.client.ExchangeFilterFunction; +import org.springframework.web.reactive.function.client.WebClient; +import reactor.core.publisher.Mono; + +public class HttpGetClient { + + private static final Logger logger = LoggerFactory.getLogger(HttpGetClient.class); + + private final WebClient webClient; + private final Gson gson; + + HttpGetClient() { + this(WebClient.builder().filter(logRequest()).filter(logResponse()).build()); + } + + HttpGetClient(WebClient webClient){ + this.webClient = webClient; + this.gson = new Gson(); + } + + public <T> Mono<T> callHttpGet(String url, Class<T> tClass) { + return webClient + .get() + .uri(url) + .retrieve() + .onStatus(HttpStatus::is4xxClientError, response -> Mono.error(getException(response))) + .onStatus(HttpStatus::is5xxServerError, response -> Mono.error(getException(response))) + .bodyToMono(String.class) + .flatMap(body->getJsonFromRequest(body,tClass)); + } + + private RuntimeException getException(ClientResponse response) { + return new RuntimeException(String.format("Request for cloud config failed: HTTP %d", + response.statusCode().value())); + } + + private <T> Mono<T> getJsonFromRequest(String body, Class<T> tClass) { + try { + return Mono.just(parseJson(body, tClass)); + } catch (JsonSyntaxException | IllegalStateException e) { + logger.warn("Converting string to json threw error ", e); + return Mono.error(e); + } + } + + private <T> T parseJson(String body, Class<T> tClass){ + return gson.fromJson(body, tClass); + } + + private static ExchangeFilterFunction logResponse() { + return ExchangeFilterFunction.ofResponseProcessor(clientResponse -> { + logger.info("Response status {}", clientResponse.statusCode()); + return Mono.just(clientResponse); + }); + } + + private static ExchangeFilterFunction logRequest() { + return ExchangeFilterFunction.ofRequestProcessor(clientRequest -> { + logger.info("Request: {} {}", clientRequest.method(), clientRequest.url()); + clientRequest.headers() + .forEach((name, values) -> values.forEach(value -> logger.info("{}={}", name, value))); + return Mono.just(clientRequest); + }); + } +} |