a895f3a18df5388505b8d0472a9a9e1c53af646f
[dcaegen2/services/sdk.git] /
1 /*
2  * ============LICENSE_START=======================================================
3  * DCAEGEN2-SERVICES-SDK
4  * ================================================================================
5  * Copyright (C) 2019 Nokia. All rights reserved.
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
10  *
11  *      http://www.apache.org/licenses/LICENSE-2.0
12  *
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=========================================================
19  */
20 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl;
21
22 import com.google.gson.JsonObject;
23 import org.jetbrains.annotations.NotNull;
24 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpMethod;
25 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpResponse;
26 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.ImmutableHttpRequest;
27 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClient;
28 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient;
29 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
32 import reactor.core.publisher.Mono;
33
34 import java.net.InetSocketAddress;
35 import java.net.MalformedURLException;
36 import java.net.URL;
37
38 public class CbsClientImpl implements CbsClient {
39
40     private static final Logger LOGGER = LoggerFactory.getLogger(CbsClientImpl.class);
41     private final RxHttpClient httpClient;
42     private final String serviceName;
43     private final InetSocketAddress cbsAddress;
44     private final String protocol;
45
46     public CbsClientImpl(RxHttpClient httpClient, String serviceName, InetSocketAddress cbsAddress, String protocol) {
47         this.httpClient = httpClient;
48         this.serviceName = serviceName;
49         this.cbsAddress = cbsAddress;
50         this.protocol = protocol;
51     }
52
53     @Override
54     public @NotNull Mono<JsonObject> get(CbsRequest request) {
55         return Mono.fromCallable(() -> constructUrl(request).toString())
56                 .doOnNext(this::logRequestUrl)
57                 .map(url -> ImmutableHttpRequest.builder()
58                         .method(HttpMethod.GET)
59                         .url(url)
60                         .diagnosticContext(request.diagnosticContext())
61                         .build())
62                 .flatMap(httpClient::call)
63                 .doOnNext(HttpResponse::throwIfUnsuccessful)
64                 .map(resp -> resp.bodyAsJson(JsonObject.class))
65                 .doOnNext(this::logCbsResponse);
66     }
67
68
69     private URL constructUrl(CbsRequest request) {
70         try {
71             return new URL(
72                     this.protocol,
73                     cbsAddress.getHostString(),
74                     cbsAddress.getPort(),
75                     request.requestPath().getForService(serviceName));
76         } catch (MalformedURLException e) {
77             throw new IllegalArgumentException("Invalid CBS URL", e);
78         }
79     }
80
81     private void logRequestUrl(String url) {
82         LOGGER.debug("Calling {} for configuration", url);
83     }
84
85     private void logCbsResponse(JsonObject json) {
86         LOGGER.info("Got successful response from Config Binding Service");
87         LOGGER.debug("CBS response: {}", json);
88     }
89 }