diff options
Diffstat (limited to 'components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/controller/ConfigFetchFromCbs.java')
-rw-r--r-- | components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/controller/ConfigFetchFromCbs.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/controller/ConfigFetchFromCbs.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/controller/ConfigFetchFromCbs.java new file mode 100644 index 00000000..e8e4e11b --- /dev/null +++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/controller/ConfigFetchFromCbs.java @@ -0,0 +1,127 @@ +/******************************************************************************* + * ============LICENSE_START======================================================= + * slice-analysis-ms + * ================================================================================ + * Copyright (C) 2020 Wipro Limited. + * ============================================================================== + * 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.slice.analysis.ms.controller; + +import com.google.gson.Gson; +import com.google.gson.JsonObject; +import com.google.gson.reflect.TypeToken; + +import java.lang.reflect.Type; +import java.time.Duration; +import java.util.Map; + +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClientFactory; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsRequests; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest; +import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.EnvProperties; +import org.onap.dcaegen2.services.sdk.rest.services.model.logging.RequestDiagnosticContext; +import org.onap.slice.analysis.ms.beans.ConfigPolicy; +import org.onap.slice.analysis.ms.beans.Configuration; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import reactor.core.Disposable; + +/** + * This class provides method to fetch application Configuration + * from CBS + */ +public class ConfigFetchFromCbs implements Runnable { + + private static Logger log = LoggerFactory.getLogger(ConfigFetchFromCbs.class); + + private Duration interval; + + public ConfigFetchFromCbs() { + + } + + public ConfigFetchFromCbs(Duration interval) { + this.interval = interval; + } + + /** + * Gets app config from CBS. + */ + private Disposable getAppConfig() { + + // Generate RequestID and InvocationID which will be used when logging and in + // HTTP requests + log.info("getAppconfig start .."); + RequestDiagnosticContext diagnosticContext = RequestDiagnosticContext.create(); + // Read necessary properties from the environment + final EnvProperties env = EnvProperties.fromEnvironment(); + log.debug("environments {}", env); + ConfigPolicy configPolicy = ConfigPolicy.getInstance(); + + // Polling properties + final Duration initialDelay = Duration.ofSeconds(5); + final Duration period = interval; + + // Create the client and use it to get the configuration + final CbsRequest request = CbsRequests.getAll(diagnosticContext); + return CbsClientFactory.createCbsClient(env) + .flatMapMany(cbsClient -> cbsClient.updates(request, initialDelay, period)).subscribe(jsonObject -> { + log.info("configuration and policy from CBS {}", jsonObject); + JsonObject config = jsonObject.getAsJsonObject("config"); + Duration newPeriod = Duration.ofSeconds(config.get("cbsPollingInterval").getAsInt()); + if (!newPeriod.equals(period)) { + interval = newPeriod; + synchronized (this) { + this.notifyAll(); + } + + } + Configuration.getInstance().updateConfigurationFromJsonObject(config); + + Type mapType = new TypeToken<Map<String, Object>>() { + }.getType(); + if (jsonObject.getAsJsonObject("policies") != null) { + JsonObject policyJson = jsonObject.getAsJsonObject("policies").getAsJsonArray("items").get(0) + .getAsJsonObject().getAsJsonObject("config"); + Map<String, Object> policy = new Gson().fromJson(policyJson, mapType); + configPolicy.setConfig(policy); + log.info("Config policy {}", configPolicy); + } + }, throwable -> log.warn("Ooops", throwable)); + } + + + + @Override + public void run() { + Boolean done = false; + while (!done) { + try { + Disposable disp = getAppConfig(); + synchronized (this) { + this.wait(); + } + log.info("Polling interval changed"); + disp.dispose(); + } catch (Exception e) { + done = true; + } + } + } + +}
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