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Infinispan Server - Red Hat Insights integration module
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package org.infinispan.server.insights;

import org.infinispan.factories.GlobalComponentRegistry;
import org.infinispan.factories.annotations.InfinispanModule;
import org.infinispan.lifecycle.ModuleLifecycle;
import org.infinispan.server.core.ServerManagement;
import org.infinispan.server.insights.config.InsightsActivation;
import org.infinispan.server.insights.logging.Log;
import org.infinispan.util.concurrent.BlockingManager;
import org.jboss.logging.Logger;

@InfinispanModule(name = "insights", requiredModules = {"core", "server-runtime"})
public class InsightsModule implements ModuleLifecycle {

   public static final String REDHAT_INSIGHTS_ACTIVATION_PROPERTY_NAME = "infinispan.insights.activation";
   public static final String REPORT_VERSION = "1.0.0";

   private static final String REDHAT_INSIGHTS_ACTIVATION_VARIABLE_NAME = "INFINISPAN_INSIGHTS_ACTIVATION";

   public static final Log log = Logger.getMessageLogger(Log.class, "org.infinispan.SERVER");

   private InsightsService service;

   @Override
   public void cacheManagerStarted(GlobalComponentRegistry gcr) {
      InsightsActivation activation = activation();
      if (InsightsActivation.DISABLED.equals(activation)) {
         log.insightsDisabled();
         return;
      }
      ServerManagement server = gcr.getComponent(ServerManagement.class);
      if (server == null) {
         log.serverManagementLookupFailed();
         return;
      }

      service = new InsightsService(server);
      gcr.registerComponent(service, InsightsService.class);
      if (InsightsActivation.LOCAL.equals(activation)) {
         log.insightsLocallyEnabled();
         return;
      }

      if (service.isOptingOut()) {
         // in this case the Insights Java client (at least with the current Insights client version)
         // will produce an error is started,
         // so we simply avoid to start the Insights client service
         String envOptOut = InfinispanInsightsConfiguration.ENV_OPT_OUT;
         String sysOptOut = envOptOut.toLowerCase().replace('_', '.');
         log.optOutTrue(envOptOut, sysOptOut);
         return;
      }

      log.insightsEnabled();
      BlockingManager blockingManager = gcr.getComponent(BlockingManager.class);
      service.start(blockingManager);
   }

   @Override
   public void cacheManagerStopping(GlobalComponentRegistry gcr) {
      if (service != null) {
         service.stop();
      }
   }

   private static InsightsActivation activation() {
      String activation = System.getProperty(REDHAT_INSIGHTS_ACTIVATION_PROPERTY_NAME);
      if (activation == null) {
         activation = System.getenv(REDHAT_INSIGHTS_ACTIVATION_VARIABLE_NAME);
      }

      if (activation == null || activation.equalsIgnoreCase(InsightsActivation.ENABLED.name())) {
         return InsightsActivation.ENABLED;
      }
      if (activation.equalsIgnoreCase(InsightsActivation.LOCAL.name())) {
         return InsightsActivation.LOCAL;
      }
      if (activation.equalsIgnoreCase(InsightsActivation.DISABLED.name())) {
         return InsightsActivation.DISABLED;
      }

      log.insightsActivationNotValidValue(REDHAT_INSIGHTS_ACTIVATION_PROPERTY_NAME, activation);
      return InsightsActivation.ENABLED;
   }
}