2 * ============LICENSE_START=======================================================
3 * DCAEGEN2-SERVICES-SDK
4 * ================================================================================
5 * Copyright (C) 2018 NOKIA Intellectual Property. 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
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=========================================================
22 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers;
24 import com.google.gson.JsonArray;
25 import com.google.gson.JsonObject;
26 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.http.configuration.CloudHttpClient;
27 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.http.configuration.EnvProperties;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30 import org.springframework.stereotype.Service;
31 import org.springframework.web.util.DefaultUriBuilderFactory;
32 import reactor.core.publisher.Mono;
35 * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 11/15/18
38 public final class ReactiveCloudConfigurationProvider implements CloudConfigurationProvider {
40 private static final Logger LOGGER = LoggerFactory.getLogger(ReactiveCloudConfigurationProvider.class);
41 private static final String EXCEPTION_MESSAGE = "Unsupported method call: ";
43 private final CloudHttpClient cloudHttpClient;
45 public ReactiveCloudConfigurationProvider() {
46 this(new CloudHttpClient());
49 ReactiveCloudConfigurationProvider(
50 CloudHttpClient cloudHttpClient) {
51 this.cloudHttpClient = cloudHttpClient;
55 public Mono<JsonObject> callForServiceConfigurationReactive(EnvProperties envProperties) {
56 return callConsulForConfigBindingServiceEndpoint(envProperties)
57 .flatMap(this::callConfigBindingServiceForConfiguration);
61 public Mono<JsonObject> callForServiceConfigurationReactive(String consulHost, int consulPort, String cbsName,
63 throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this);
67 public JsonObject callForServiceConfiguration(String consulHost, int consulPort, String cbsName, String appName) {
68 throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this);
72 public JsonObject callForServiceConfiguration(EnvProperties envProperties) {
73 throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this);
76 private Mono<String> callConsulForConfigBindingServiceEndpoint(EnvProperties envProperties) {
77 LOGGER.info("Retrieving Config Binding Service endpoint from Consul");
78 return cloudHttpClient.callHttpGet(getConsulUrl(envProperties), JsonArray.class)
79 .flatMap(jsonArray -> this.createConfigBindingServiceUrl(jsonArray, envProperties.appName()));
82 private String getConsulUrl(EnvProperties envProperties) {
83 return getUri(envProperties.consulHost(), envProperties.consulPort(), "/v1/catalog/service",
84 envProperties.cbsName());
87 private Mono<JsonObject> callConfigBindingServiceForConfiguration(String configBindingServiceUri) {
88 LOGGER.info("Retrieving configuration");
89 return cloudHttpClient.callHttpGet(configBindingServiceUri, JsonObject.class);
93 private Mono<String> createConfigBindingServiceUrl(JsonArray jsonArray, String appName) {
94 return getConfigBindingObject(jsonArray)
95 .flatMap(jsonObject -> buildConfigBindingServiceUrl(jsonObject, appName));
98 private Mono<String> buildConfigBindingServiceUrl(JsonObject jsonObject, String appName) {
99 return Mono.just(getUri(jsonObject.get("ServiceAddress").getAsString(),
100 jsonObject.get("ServicePort").getAsInt(), "/service_component", appName));
103 private Mono<JsonObject> getConfigBindingObject(JsonArray jsonArray) {
105 if (jsonArray.size() > 0) {
106 return Mono.just(jsonArray.get(0).getAsJsonObject());
108 throw new IllegalStateException("JSON Array was empty");
110 } catch (IllegalStateException e) {
111 LOGGER.warn("Failed to retrieve JSON Object from array", e);
112 return Mono.error(e);
116 private String getUri(String host, Integer port, String... paths) {
117 return new DefaultUriBuilderFactory().builder()
121 .path(String.join("/", paths))