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.web.util.DefaultUriBuilderFactory;
31 import reactor.core.publisher.Mono;
34 * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 11/15/18
36 final class ReactiveCloudConfigurationProvider implements CloudConfigurationProvider {
38 private static final Logger LOGGER = LoggerFactory.getLogger(ReactiveCloudConfigurationProvider.class);
39 private static final String EXCEPTION_MESSAGE = "Unsupported method call: ";
41 private final CloudHttpClient cloudHttpClient;
43 public ReactiveCloudConfigurationProvider() {
44 this(new CloudHttpClient());
47 ReactiveCloudConfigurationProvider(
48 CloudHttpClient cloudHttpClient) {
49 this.cloudHttpClient = cloudHttpClient;
53 public Mono<JsonObject> callForServiceConfigurationReactive(EnvProperties envProperties) {
54 return callConsulForConfigBindingServiceEndpoint(envProperties)
55 .flatMap(this::callConfigBindingServiceForConfiguration);
59 public Mono<JsonObject> callForServiceConfigurationReactive(String consulHost, int consulPort, String cbsName,
61 throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this);
65 public JsonObject callForServiceConfiguration(String consulHost, int consulPort, String cbsName, String appName) {
66 throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this);
70 public JsonObject callForServiceConfiguration(EnvProperties envProperties) {
71 throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this);
74 private Mono<String> callConsulForConfigBindingServiceEndpoint(EnvProperties envProperties) {
75 LOGGER.info("Retrieving Config Binding Service endpoint from Consul");
76 return cloudHttpClient.callHttpGet(getConsulUrl(envProperties), JsonArray.class)
77 .flatMap(jsonArray -> this.createConfigBindingServiceUrl(jsonArray, envProperties.appName()));
80 private String getConsulUrl(EnvProperties envProperties) {
81 return getUri(envProperties.consulHost(), envProperties.consulPort(), "/v1/catalog/service",
82 envProperties.cbsName());
85 private Mono<JsonObject> callConfigBindingServiceForConfiguration(String configBindingServiceUri) {
86 LOGGER.info("Retrieving configuration");
87 return cloudHttpClient.callHttpGet(configBindingServiceUri, JsonObject.class);
91 private Mono<String> createConfigBindingServiceUrl(JsonArray jsonArray, String appName) {
92 return getConfigBindingObject(jsonArray)
93 .flatMap(jsonObject -> buildConfigBindingServiceUrl(jsonObject, appName));
96 private Mono<String> buildConfigBindingServiceUrl(JsonObject jsonObject, String appName) {
97 return Mono.just(getUri(jsonObject.get("ServiceAddress").getAsString(),
98 jsonObject.get("ServicePort").getAsInt(), "/service_component", appName));
101 private Mono<JsonObject> getConfigBindingObject(JsonArray jsonArray) {
103 if (jsonArray.size() > 0) {
104 return Mono.just(jsonArray.get(0).getAsJsonObject());
106 throw new IllegalStateException("JSON Array was empty");
108 } catch (IllegalStateException e) {
109 LOGGER.warn("Failed to retrieve JSON Object from array", e);
110 return Mono.error(e);
114 private String getUri(String host, Integer port, String... paths) {
115 return new DefaultUriBuilderFactory().builder()
119 .path(String.join("/", paths))