diff options
author | Pawel <pawel.kasperkiewicz@nokia.com> | 2020-07-30 16:30:39 +0200 |
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committer | Pawel <pawel.kasperkiewicz@nokia.com> | 2020-08-26 08:42:44 +0200 |
commit | 50592c30fed4908bbf860f9018cc5f94f8bd2303 (patch) | |
tree | 151aefb0b21e3fbabc89c39a5731643bbbdd4edb /src/main/java/org/onap/dcae/configuration/ConfigLoader.java | |
parent | 79efedef7af08038b49821c410db1b11e038f653 (diff) |
Config fetch for VESCollector through DCAE-SDK (CBS Client)
Issue-ID: DCAEGEN2-2212
Signed-off-by: Pawel <pawel.kasperkiewicz@nokia.com>
Change-Id: I25072b340b5c9f2f538d39e5befb1331804b7bba
Signed-off-by: Pawel <pawel.kasperkiewicz@nokia.com>
Diffstat (limited to 'src/main/java/org/onap/dcae/configuration/ConfigLoader.java')
-rw-r--r-- | src/main/java/org/onap/dcae/configuration/ConfigLoader.java | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/configuration/ConfigLoader.java b/src/main/java/org/onap/dcae/configuration/ConfigLoader.java new file mode 100644 index 00000000..eaeb09e3 --- /dev/null +++ b/src/main/java/org/onap/dcae/configuration/ConfigLoader.java @@ -0,0 +1,99 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.ves + * ================================================================================ + * Copyright (C) 2020 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.dcae.configuration; + +import io.vavr.collection.Map; +import io.vavr.control.Option; +import org.json.JSONObject; +import org.onap.dcae.configuration.cbs.CbsConfigResolver; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class ConfigLoader { + + private static final Logger log = LoggerFactory.getLogger(ConfigLoader.class); + private final ConfigFilesFacade configFilesFacade; + private final CbsConfigResolver cbsConfigResolver; + private final Runnable applicationRestarter; + private boolean isApplicationRestartNeeded; + + ConfigLoader(ConfigFilesFacade configFilesFacade, CbsConfigResolver cbsConfigResolver, Runnable applicationRestarter) { + this.configFilesFacade = configFilesFacade; + this.cbsConfigResolver = cbsConfigResolver; + this.applicationRestarter = applicationRestarter; + this.isApplicationRestartNeeded = false; + } + + public synchronized void updateConfig() { + Option<JSONObject> appConfig = cbsConfigResolver.getAppConfig(); + appConfig.peek(this::handleUpdate).onEmpty(logSkipMessage()); + } + + private Runnable logSkipMessage() { + return () -> log.info("Skipping dynamic configuration"); + } + + private void handleUpdate(JSONObject appConfig) { + updatePropertiesIfChanged(appConfig); + updateDmaapConfigIfChanged(appConfig); + restartApplicationIfNeeded(); + } + + private void updatePropertiesIfChanged(JSONObject appConfig) { + Map<String, String> newProperties = ConfigParsing.getProperties(appConfig); + Map<String, String> oldProperties = configFilesFacade.readCollectorProperties().get(); + + if (!areCommonPropertiesSame(oldProperties, newProperties)) { + configFilesFacade.writeProperties(newProperties); + isApplicationRestartNeeded = true; + } + } + + private boolean areCommonPropertiesSame(Map<String, String> oldProperties, Map<String, String> newProperties) { + Map<String, String> filteredOldProperties = filterIntersectingKeys(oldProperties, newProperties); + return filteredOldProperties.equals(newProperties); + } + + private Map<String, String> filterIntersectingKeys(Map<String, String> primaryProperties, + Map<String, String> otherProperties) { + return primaryProperties.filterKeys(key -> containsKey(key, otherProperties)); + } + + private boolean containsKey(String key, Map<String, String> properties) { + return properties.keySet().contains(key); + } + + private void updateDmaapConfigIfChanged(JSONObject appConfig) { + JSONObject oldDmaapConfig = configFilesFacade.readDMaaPConfiguration().get(); + JSONObject newDmaapConfig = ConfigParsing.getDMaaPConfig(appConfig).get(); + + if (!oldDmaapConfig.similar(newDmaapConfig)) { + configFilesFacade.writeDMaaPConfiguration(newDmaapConfig); + isApplicationRestartNeeded = true; + } + } + + private void restartApplicationIfNeeded() { + if (isApplicationRestartNeeded) { + applicationRestarter.run(); + isApplicationRestartNeeded = false; + } + } +}
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