2 * ========================LICENSE_START=================================
5 * Copyright (C) 2019 Nordix Foundation
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===================================
21 package org.oransc.policyagent.configuration;
22 import java.util.Optional;
23 import java.util.Properties;
24 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.EnvProperties;
25 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.ImmutableEnvProperties;
26 import org.oransc.policyagent.exceptions.EnvironmentLoaderException;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
29 import reactor.core.publisher.Mono;
31 class EnvironmentProcessor {
33 private static final int DEFAULT_CONSUL_PORT = 8500;
34 private static final Logger logger = LoggerFactory.getLogger(EnvironmentProcessor.class);
36 private EnvironmentProcessor() {
39 static Mono<EnvProperties> readEnvironmentVariables(Properties systemEnvironment) {
41 EnvProperties envProperties;
43 envProperties = ImmutableEnvProperties.builder() //
44 .consulHost(getConsulHost(systemEnvironment)) //
45 .consulPort(getConsultPort(systemEnvironment)) //
46 .cbsName(getConfigBindingService(systemEnvironment)) //
47 .appName(getService(systemEnvironment)) //
49 } catch (EnvironmentLoaderException e) {
52 logger.trace("Evaluated environment system variables {}", envProperties);
53 return Mono.just(envProperties);
56 private static String getConsulHost(Properties systemEnvironments) throws EnvironmentLoaderException {
57 return Optional.ofNullable(systemEnvironments.getProperty("CONSUL_HOST"))
58 .orElseThrow(() -> new EnvironmentLoaderException("$CONSUL_HOST environment has not been defined"));
61 private static Integer getConsultPort(Properties systemEnvironments) {
62 return Optional.ofNullable(systemEnvironments.getProperty("CONSUL_PORT")) //
63 .map(Integer::valueOf) //
64 .orElseGet(EnvironmentProcessor::getDefaultPortOfConsul);
67 private static String getConfigBindingService(Properties systemEnvironments) throws EnvironmentLoaderException {
68 return Optional.ofNullable(systemEnvironments.getProperty("CONFIG_BINDING_SERVICE")) //
70 () -> new EnvironmentLoaderException("$CONFIG_BINDING_SERVICE environment has not been defined"));
73 private static String getService(Properties systemEnvironments) throws EnvironmentLoaderException {
75 .ofNullable(Optional.ofNullable(systemEnvironments.getProperty("HOSTNAME"))
76 .orElse(systemEnvironments.getProperty("SERVICE_NAME")))
77 .orElseThrow(() -> new EnvironmentLoaderException(
78 "Neither $HOSTNAME/$SERVICE_NAME have not been defined as system environment"));
81 private static Integer getDefaultPortOfConsul() {
82 logger.warn("$CONSUL_PORT variable will be set to default port {}", DEFAULT_CONSUL_PORT);
83 return DEFAULT_CONSUL_PORT;