diff options
Diffstat (limited to 'rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs')
7 files changed, 524 insertions, 8 deletions
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/CbsClientFactory.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/CbsClientFactory.java index f0293564..e43cf312 100644 --- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/CbsClientFactory.java +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/CbsClientFactory.java @@ -4,7 +4,6 @@ * ================================================================================ * Copyright (C) 2019-2021 Nokia. All rights reserved. * Copyright (C) 2021 Wipro Limited. - * Copyright (C) 2022 AT&T 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. @@ -25,6 +24,8 @@ import org.jetbrains.annotations.NotNull; import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClient; import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClientFactory; import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.CbsClientConfigMap; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.CbsClientRest; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.CbsLookup; import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsClientConfiguration; import org.onap.dcaegen2.services.sdk.security.ssl.TrustStoreKeys; import org.slf4j.Logger; @@ -74,6 +75,12 @@ public class CbsClientFactory { CbsClientConfiguration configuration) { CbsClientConfigMap cbsClientConfigMap = new CbsClientConfigMap(configuration.configMapFilePath(), configuration.policySyncFilePath(), configuration.appName()); - return Mono.just(cbsClientConfigMap); + return cbsClientConfigMap.verifyConfigMapFile() ? Mono.just(cbsClientConfigMap) : + getConfigFromCBS(httpClient, configuration); + } + + private static Mono<CbsClient> getConfigFromCBS(RxHttpClient httpClient, CbsClientConfiguration configuration) { + return new CbsLookup().lookup(configuration) + .map(addr ->new CbsClientRest(httpClient, configuration.appName(), addr, configuration.protocol())); } } diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/CbsClientRest.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/CbsClientRest.java new file mode 100644 index 00000000..3eda6d8a --- /dev/null +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/CbsClientRest.java @@ -0,0 +1,88 @@ +/* + * ============LICENSE_START======================================================= + * DCAEGEN2-SERVICES-SDK + * ================================================================================ + * Copyright (C) 2019-2021 Nokia. 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.sdk.rest.services.cbs.client.impl; + +import com.google.gson.JsonObject; +import org.jetbrains.annotations.NotNull; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpMethod; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpResponse; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.ImmutableHttpRequest; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClient; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import reactor.core.publisher.Mono; + +import java.net.InetSocketAddress; +import java.net.MalformedURLException; +import java.net.URL; + +public class CbsClientRest implements CbsClient { + private static final Logger LOGGER = LoggerFactory.getLogger(CbsClientRest.class); + private final RxHttpClient httpClient; + private final String serviceName; + private final InetSocketAddress cbsAddress; + private final String protocol; + + public CbsClientRest(RxHttpClient httpClient, String serviceName, InetSocketAddress cbsAddress, String protocol) { + this.httpClient = httpClient; + this.serviceName = serviceName; + this.cbsAddress = cbsAddress; + this.protocol = protocol; + } + + @Override + public @NotNull Mono<JsonObject> get(CbsRequest request) { + return Mono.fromCallable(() -> constructUrl(request).toString()) + .doOnNext(this::logRequestUrl) + .map(url -> ImmutableHttpRequest.builder() + .method(HttpMethod.GET) + .url(url) + .diagnosticContext(request.diagnosticContext()) + .build()) + .flatMap(httpClient::call) + .doOnNext(HttpResponse::throwIfUnsuccessful) + .map(resp -> resp.bodyAsJson(JsonObject.class)) + .map(CbsClientEnvironmentParsing::processEnvironmentVariables) + .doOnNext(this::logCbsResponse); + } + + private void logRequestUrl(String url) { + LOGGER.debug("Calling {} for configuration", url); + } + + private void logCbsResponse(JsonObject json) { + LOGGER.info("Got successful response from Config Binding Service"); + LOGGER.debug("CBS response: {}", json); + } + + private URL constructUrl(CbsRequest request) { + try { + return new URL( + this.protocol, + cbsAddress.getHostString(), + cbsAddress.getPort(), + request.requestPath().getForService(serviceName)); + } catch (MalformedURLException e) { + throw new IllegalArgumentException("Invalid CBS URL", e); + } + } +}
\ No newline at end of file diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/CbsLookup.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/CbsLookup.java new file mode 100644 index 00000000..c07ed8e4 --- /dev/null +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/CbsLookup.java @@ -0,0 +1,53 @@ +/* + * ============LICENSE_START==================================== + * DCAEGEN2-SERVICES-SDK + * ========================================================= + * Copyright (C) 2019 Nokia. 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.sdk.rest.services.cbs.client.impl; + +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsClientConfiguration; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import reactor.core.publisher.Mono; + +import java.net.InetSocketAddress; + +/** + * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a> + * @since February 2019 + */ +public class CbsLookup { + + private static final Logger LOGGER = LoggerFactory.getLogger(CbsLookup.class); + + public Mono<InetSocketAddress> lookup(CbsClientConfiguration configuration) { + return Mono.just(createCbsAddress(configuration)) + .doOnNext(this::logCbsServiceAddress); + } + + private InetSocketAddress createCbsAddress(CbsClientConfiguration configuration) { + return InetSocketAddress.createUnresolved( + configuration.hostname(), + configuration.port()); + } + + private void logCbsServiceAddress(InetSocketAddress address) { + LOGGER.info("Config Binding Service address: {}", address); + } + +} diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/CbsClientConfiguration.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/CbsClientConfiguration.java index fa265d85..6eec6674 100644 --- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/CbsClientConfiguration.java +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/CbsClientConfiguration.java @@ -4,7 +4,6 @@ * ========================================================= * Copyright (C) 2019-2021 Nokia. All rights reserved. * Copyright (C) 2021 Wipro Limited. - * Copyright (C) 2022 AT&T 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. @@ -51,7 +50,7 @@ public interface CbsClientConfiguration { String TRUST_JKS = "trust.jks"; String TRUST_PASS = "trust.pass"; - + Integer PORT_FOR_CBS_OVER_TLS = 10443; /** * Name of environment variable containing path to the cacert.pem file. @@ -59,6 +58,16 @@ public interface CbsClientConfiguration { String DCAE_CA_CERT_PATH = "DCAE_CA_CERTPATH"; /** + * Name of environment variable containing Config Binding Service network hostname. + */ + String ENV_CBS_HOSTNAME = "CONFIG_BINDING_SERVICE"; + + /** + * Name of environment variable containing Config Binding Service network port. + */ + String ENV_CBS_PORT = "CONFIG_BINDING_SERVICE_SERVICE_PORT"; + + /** * Name of environment variable containing current application name. */ String ENV_APP_NAME = "HOSTNAME"; @@ -73,16 +82,61 @@ public interface CbsClientConfiguration { */ String ENV_CBS_CLIENT_POLICY_PATH = "CBS_CLIENT_POLICY_PATH"; + /** + * Name of environment variable containing Consul host name. + * + * @deprecated CBS lookup in Consul service should not be needed, + * instead {@link #ENV_CBS_HOSTNAME} should be used directly. + */ + @Deprecated + String ENV_CONSUL_HOST = "CONSUL_HOST"; + + /** + * Name of environment variable containing Config Binding Service <em>service name</em> as registered in Consul + * services API. + * + * @deprecated CBS lookup in Consul service should not be needed, + * instead {@link #ENV_CBS_HOSTNAME} should be used directly. + */ + @Deprecated + String ENV_CBS_NAME = "CONFIG_BINDING_SERVICE"; + + @Value.Parameter + @Nullable + String hostname(); + + @Value.Parameter + @Nullable + Integer port(); @Value.Parameter String appName(); + @Value.Parameter + @Nullable + String protocol(); + @Value.Default default @Nullable TrustStoreKeys trustStoreKeys() { return null; } @Value.Default + @Deprecated + default String consulHost() { + return "consul-server"; + } + @Value.Default + @Deprecated + default Integer consulPort() { + return 8500; + } + @Value.Default + @Deprecated + default String cbsName() { + return "config-binding-service"; + } + @Value.Default default String configMapFilePath() { return "/app-config/application_config.yaml"; } @@ -91,7 +145,6 @@ public interface CbsClientConfiguration { return "/etc/policies/policies.json"; } - /** * Creates CbsClientConfiguration from system environment variables. * @@ -102,6 +155,7 @@ public interface CbsClientConfiguration { String pathToCaCert = System.getenv(DCAE_CA_CERT_PATH); ImmutableCbsClientConfiguration.Builder configBuilder = ImmutableCbsClientConfiguration.builder() + .hostname(getEnv(ENV_CBS_HOSTNAME)) .appName(getEnv(ENV_APP_NAME)); Optional.ofNullable(System.getenv(ENV_CBS_CLIENT_CONFIG_PATH)) @@ -109,7 +163,41 @@ public interface CbsClientConfiguration { Optional.ofNullable(System.getenv(ENV_CBS_CLIENT_POLICY_PATH)) .ifPresent(configBuilder::policySyncFilePath); - return configBuilder.build(); + + return Optional.ofNullable(pathToCaCert).filter(certPath -> !"".equals(certPath)) + .map(certPath -> createSslHttpConfig(configBuilder, certPath)) + .orElseGet(() -> createPlainHttpConfig(configBuilder)); + } + + static CbsClientConfiguration createPlainHttpConfig(ImmutableCbsClientConfiguration.Builder configBuilder) { + LOGGER.info("CBS client will use plain http protocol."); + return configBuilder + .protocol("http") + .port(Integer.valueOf(getEnv(ENV_CBS_PORT))) + .build(); + } + + static CbsClientConfiguration createSslHttpConfig(ImmutableCbsClientConfiguration.Builder configBuilder, + String pathToCaCert) { + LOGGER.info("CBS client will use http over TLS."); + return configBuilder + .trustStoreKeys(crateSecurityKeysFromEnvironment(createPathToJksFile(pathToCaCert))) + .port(PORT_FOR_CBS_OVER_TLS) + .protocol("https") + .build(); + } + + static TrustStoreKeys crateSecurityKeysFromEnvironment(String pathToCerts) { + LOGGER.info("Path to cert files: {}", pathToCerts + "/"); + validateIfFilesExist(pathToCerts); + return ImmutableTrustStoreKeys.builder() + .trustStore(SecurityKeysStore.fromPath(Paths.get(pathToCerts + "/" + TRUST_JKS))) + .trustStorePassword(Passwords.fromPath(Paths.get(pathToCerts + "/" + TRUST_PASS))) + .build(); + } + + static String createPathToJksFile(String pathToCaCertPemFile) { + return pathToCaCertPemFile.substring(0, pathToCaCertPemFile.lastIndexOf("/")); } static String getEnv(String envName) { @@ -124,5 +212,12 @@ public interface CbsClientConfiguration { } } + static void validateIfFilesExist(String pathToFile) { + boolean areFilesExist = Files.exists(Paths.get(pathToFile + "/" + TRUST_JKS)) && + Files.exists(Paths.get(pathToFile + "/" + TRUST_PASS)); + if (!areFilesExist) { + throw new CbsClientConfigurationException("Required files do not exist in " + pathToFile + " directory."); + } + } } diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationClient.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationClient.java new file mode 100644 index 00000000..e1dd7aff --- /dev/null +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationClient.java @@ -0,0 +1,114 @@ +/* + * ============LICENSE_START======================================================= + * DCAEGEN2-SERVICES-SDK + * ================================================================================ + * 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.sdk.rest.services.cbs.client.providers; + +import com.google.gson.JsonObject; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsClientConfiguration; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.ImmutableCbsClientConfiguration; +import reactor.core.publisher.Mono; + +/** + * Complete CloudConfiguration HTTPClient API. + * + * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 11/16/18 + * @version 1.0.0 + * @since 1.0.0 + */ +public final class CloudConfigurationClient implements CloudConfigurationProvider { + + private final CloudConfigurationProvider cloudConfigurationProvider; + + /** + * Default constructor for CloudConfigurationClient, set CloudConfigurationProvider cloudConfigurationProvider + * property by calling: {@link ReactiveCloudConfigurationProvider}. + * Calls other constructor in this class {@link #CloudConfigurationClient(CloudConfigurationProvider)}. + */ + public CloudConfigurationClient() { + this(new ReactiveCloudConfigurationProvider()); + } + + /** + * Constructor for CloudConfigurationClient, set loudConfigurationProvider cloudConfigurationProvider property + * by passing them in constructor {@link org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers.CloudConfigurationProvider} + * implementation client. + * + * @param cloudConfigurationProvider - client provider for calling ConfigBindingService + */ + public CloudConfigurationClient( + CloudConfigurationProvider cloudConfigurationProvider) { + this.cloudConfigurationProvider = cloudConfigurationProvider; + } + + /** + * Documentation in {@link org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers.CloudConfigurationProvider} + * + * @param consulHost - Hostname/IPAddress of consul Database + * @param consulPort - Port number of consul Database + * @param cbsName - ConfigBindingService url + * @param appName - ApplicationName for each config will be returned + */ + @Override + public Mono<JsonObject> callForServiceConfigurationReactive(String consulHost, int consulPort, String cbsName, + String appName) { + return cloudConfigurationProvider.callForServiceConfigurationReactive( + ImmutableCbsClientConfiguration.builder().consulHost(consulHost) + .consulPort(consulPort).cbsName(cbsName) + .appName(appName).build()); + } + + /** + * Documentation in {@link org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers.CloudConfigurationProvider}. + * + * @param cbsClientConfiguration - Object holds consulPort, consulURL, configBindingSeriveName, applicationName which have + * been defined in dcaegen2 cloud environment. + */ + @Override + public Mono<JsonObject> callForServiceConfigurationReactive(CbsClientConfiguration cbsClientConfiguration) { + return cloudConfigurationProvider.callForServiceConfigurationReactive(cbsClientConfiguration); + } + + /** + * Documentation in {@link org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers.CloudConfigurationProvider}. + * + * @param consulHost - Hostname/IPAddress of consul Database + * @param consulPort - Port number of consul Database + * @param cbsName - ConfigBindingService url + * @param appName - ApplicationName for each config will be returned + */ + @Override + public JsonObject callForServiceConfiguration(String consulHost, int consulPort, String cbsName, String appName) { + return cloudConfigurationProvider.callForServiceConfigurationReactive( + ImmutableCbsClientConfiguration.builder().consulHost(consulHost) + .consulPort(consulPort).cbsName(cbsName) + .appName(appName).build()).block(); + } + + /** + * Documentation in {@link org.onap.dcaegen2.services.sdk.rest.services.cbs.client.providers.CloudConfigurationProvider}. + * + * @param cbsClientConfiguration - Object holds consulPort, consulURL, configBindingSeriveName, applicationName which have + */ + @Override + public JsonObject callForServiceConfiguration(CbsClientConfiguration cbsClientConfiguration) { + return cloudConfigurationProvider.callForServiceConfigurationReactive(cbsClientConfiguration).block(); + } +} diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationProvider.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationProvider.java index 37e59ca5..c0dbd5f9 100644 --- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationProvider.java +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/CloudConfigurationProvider.java @@ -1,9 +1,8 @@ /* -* ============LICENSE_START======================================================= + * ============LICENSE_START======================================================= * DCAEGEN2-SERVICES-SDK * ================================================================================ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved. - * Copyright (C) 2022 AT&T 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. @@ -65,6 +64,27 @@ public interface CloudConfigurationProvider { String appName); + /*callForServiceConfiguration*/ + /** + * Getting configuration for appName from ConfigBindingService. + * + * @param consulHost - Hostname/IPAddress of consul Database + * @param consulPort - Port number of consul Database + * @param cbsName - ConfigBindingService url + * @param appName - ApplicationName for each config will be returned + * @return configuration for specified application in dcaegen2 cloud infrastructure. + */ + JsonObject callForServiceConfiguration(String consulHost, int consulPort, String cbsName, String appName); + + /*callForServiceConfiguration*/ + + /** + * Getting configuration for appName from ConfigBindingService. + * + * @param cbsClientConfiguration - Object holds consulPort, consulURL, configBindingSeriveName, applicationName which have + * @return configuration for specified application in dcaegen2 cloud infrastructure. + */ + JsonObject callForServiceConfiguration(CbsClientConfiguration cbsClientConfiguration); } diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/ReactiveCloudConfigurationProvider.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/ReactiveCloudConfigurationProvider.java new file mode 100644 index 00000000..a50edd38 --- /dev/null +++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/providers/ReactiveCloudConfigurationProvider.java @@ -0,0 +1,139 @@ +/* + * ============LICENSE_START======================================================= + * DCAEGEN2-SERVICES-SDK + * ================================================================================ + * Copyright (C) 2018-2019 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.sdk.rest.services.cbs.client.providers; + +import com.google.gson.JsonArray; +import com.google.gson.JsonObject; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpMethod; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpRequest; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.ImmutableHttpRequest; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClient; +import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClientFactory; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsClientConfiguration; +import org.onap.dcaegen2.services.sdk.rest.services.uri.URI; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import reactor.core.publisher.Mono; + +/** + * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 11/15/18 + */ +public final class ReactiveCloudConfigurationProvider implements CloudConfigurationProvider { + + private static final Logger LOGGER = LoggerFactory.getLogger(ReactiveCloudConfigurationProvider.class); + private static final String EXCEPTION_MESSAGE = "Unsupported method call: "; + + private final RxHttpClient rxHttpClient; + + public ReactiveCloudConfigurationProvider() { + this(RxHttpClientFactory.create()); + } + + ReactiveCloudConfigurationProvider(RxHttpClient rxHttpClient) { + this.rxHttpClient = rxHttpClient; + } + + @Override + public Mono<JsonObject> callForServiceConfigurationReactive(CbsClientConfiguration configuration) { + return callConsulForConfigBindingServiceEndpoint(configuration) + .flatMap(this::callConfigBindingServiceForConfiguration); + } + + @Override + public Mono<JsonObject> callForServiceConfigurationReactive(String consulHost, int consulPort, String cbsName, + String appName) { + throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this); + } + + @Override + public JsonObject callForServiceConfiguration(String consulHost, int consulPort, String cbsName, String appName) { + throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this); + } + + @Override + public JsonObject callForServiceConfiguration(CbsClientConfiguration configuration) { + throw new UnsupportedOperationException(EXCEPTION_MESSAGE + this); + } + + private Mono<String> callConsulForConfigBindingServiceEndpoint(CbsClientConfiguration configuration) { + LOGGER.info("Retrieving Config Binding Service endpoint from Consul"); + + HttpRequest httpRequest = ImmutableHttpRequest.builder() + .url(getConsulUrl(configuration)).method(HttpMethod.GET).build(); + + return rxHttpClient.call(httpRequest) + .map(resp -> resp.bodyAsJson(JsonArray.class)) + .flatMap(jsonArray -> + this.createConfigBindingServiceUrl( + jsonArray, + configuration.appName()) + ); + } + + private String getConsulUrl(CbsClientConfiguration configuration) { + return getUri(configuration.consulHost(), configuration.consulPort(), "/v1/catalog/service", + configuration.cbsName()); + } + + private Mono<JsonObject> callConfigBindingServiceForConfiguration(String configBindingServiceUri) { + LOGGER.info("Retrieving configuration"); + HttpRequest httpRequest = ImmutableHttpRequest.builder() + .url(configBindingServiceUri).method(HttpMethod.GET).build(); + + return rxHttpClient.call(httpRequest) + .map(httpResponse -> httpResponse.bodyAsJson(JsonObject.class)); + } + + + private Mono<String> createConfigBindingServiceUrl(JsonArray jsonArray, String appName) { + return getConfigBindingObject(jsonArray) + .flatMap(jsonObject -> buildConfigBindingServiceUrl(jsonObject, appName)); + } + + private Mono<String> buildConfigBindingServiceUrl(JsonObject jsonObject, String appName) { + return Mono.just(getUri(jsonObject.get("ServiceAddress").getAsString(), + jsonObject.get("ServicePort").getAsInt(), "/service_component", appName)); + } + + private Mono<JsonObject> getConfigBindingObject(JsonArray jsonArray) { + try { + if (jsonArray.size() > 0) { + return Mono.just(jsonArray.get(0).getAsJsonObject()); + } else { + throw new IllegalStateException("JSON Array was empty"); + } + } catch (IllegalStateException e) { + LOGGER.warn("Failed to retrieve JSON Object from array", e); + return Mono.error(e); + } + } + + private String getUri(String host, Integer port, String... paths) { + return new URI.URIBuilder() + .scheme("http") + .host(host) + .port(port) + .path(String.join("/", paths)) + .build().toString(); + } + +}
\ No newline at end of file |