2 * ============LICENSE_START========================================================================
3 * Copyright (C) 2018 NOKIA Intellectual Property, 2018-2019 Nordix Foundation. All rights reserved.
4 * =================================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
6 * in compliance with the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software distributed under the License
11 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
12 * or implied. See the License for the specific language governing permissions and limitations under
14 * ============LICENSE_END==========================================================================
17 package org.onap.dcaegen2.collectors.datafile.configuration;
20 import java.util.Optional;
21 import java.util.Properties;
23 import org.onap.dcaegen2.collectors.datafile.exceptions.EnvironmentLoaderException;
24 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.http.configuration.EnvProperties;
25 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.http.configuration.ImmutableEnvProperties;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
29 import reactor.core.publisher.Mono;
32 * Handling the Consul connection.
34 * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 9/19/18
36 class EnvironmentProcessor {
38 private static final int DEFAULT_CONSUL_PORT = 8500;
39 private static final Logger logger = LoggerFactory.getLogger(EnvironmentProcessor.class);
41 private EnvironmentProcessor() {
44 static Mono<EnvProperties> readEnvironmentVariables(Properties systemEnvironment, Map<String, String> contextMap) {
45 MDC.setContextMap(contextMap);
46 logger.trace("Loading configuration from system environment variables");
47 EnvProperties envProperties;
49 envProperties = ImmutableEnvProperties.builder() //
50 .consulHost(getConsulHost(systemEnvironment)) //
51 .consulPort(getConsultPort(systemEnvironment)) //
52 .cbsName(getConfigBindingService(systemEnvironment)) //
53 .appName(getService(systemEnvironment)) //
55 } catch (EnvironmentLoaderException e) {
58 logger.trace("Evaluated environment system variables {}", envProperties);
59 return Mono.just(envProperties);
62 private static String getConsulHost(Properties systemEnvironments) throws EnvironmentLoaderException {
63 return Optional.ofNullable(systemEnvironments.getProperty("CONSUL_HOST"))
64 .orElseThrow(() -> new EnvironmentLoaderException("$CONSUL_HOST environment has not been defined"));
67 private static Integer getConsultPort(Properties systemEnvironments) {
68 return Optional.ofNullable(systemEnvironments.getProperty("CONSUL_PORT")) //
69 .map(Integer::valueOf) //
70 .orElseGet(EnvironmentProcessor::getDefaultPortOfConsul);
73 private static String getConfigBindingService(Properties systemEnvironments) throws EnvironmentLoaderException {
74 return Optional.ofNullable(systemEnvironments.getProperty("CONFIG_BINDING_SERVICE")) //
76 () -> new EnvironmentLoaderException("$CONFIG_BINDING_SERVICE environment has not been defined"));
79 private static String getService(Properties systemEnvironments) throws EnvironmentLoaderException {
81 .ofNullable(Optional.ofNullable(systemEnvironments.getProperty("HOSTNAME"))
82 .orElse(systemEnvironments.getProperty("SERVICE_NAME")))
83 .orElseThrow(() -> new EnvironmentLoaderException(
84 "Neither $HOSTNAME/$SERVICE_NAME have not been defined as system environment"));
87 private static Integer getDefaultPortOfConsul() {
88 logger.warn("$CONSUL_PORT variable will be set to default port {}", DEFAULT_CONSUL_PORT);
89 return DEFAULT_CONSUL_PORT;