package com.atlassian.plugin.osgi.container.felix;
   
   import org.apache.felix.framework.Logger;
   import org.apache.felix.framework.resolver.ResolveException;
   import org.osgi.framework.BundleException;
   
   import java.util.Arrays;
   import java.util.List;
   
  /**
   * Bridges Felix logging messages with the Commons Logging
   */
  public class FelixLoggerBridge extends Logger {
      private final org.slf4j.Logger log;
  
      private static final List<String> messagesToIgnore = Arrays.asList(
              "BeanInfo",
              "sun.beans.editors.",
              "add an import for 'org.eclipse.gemini.blueprint.service.",
              "Class 'org.springframework.util.Assert'",
              "Class '[Lorg.eclipse.gemini.blueprint.service",
              "org.springframework.core.InfrastructureProxy",
              "org.springframework.aop.SpringProxy",
              "org.springframework.aop.IntroductionInfo",
              "Class 'org.apache.commons.logging.impl.Log4JLogger'",
              "org.springframework.util.Assert",
              "org.eclipse.gemini.blueprint.service.importer.ServiceReferenceProxy",
              "org.eclipse.gemini.blueprint.service.importer.ImportedOsgiServiceProxy",
              "org.eclipse.gemini.blueprint.service.importer.support.ImportContextClassLoaderEditor",
              "[Lorg.eclipse.gemini.blueprint.service.importer.OsgiServiceLifecycleListener;Editor"
      );
  
      public FelixLoggerBridge(org.slf4j.Logger log) {
          this.log = log;
          setLogLevel(
                  log.isDebugEnabled() ? Logger.LOG_DEBUG :
                          log.isInfoEnabled() ? Logger.LOG_WARNING :
                                  log.isWarnEnabled() ? Logger.LOG_WARNING :
                                          Logger.LOG_ERROR);
      }
  
      protected void doLog(org.osgi.framework.ServiceReference serviceReference, int level, java.lang.String message, java.lang.Throwable throwable) {
          if (serviceReference != null)
              message = "Service " + serviceReference + ": " + message;
  
          switch (level) {
              case LOG_DEBUG:
  
                  // helps debug resolution errors when there are multiple constraint violations (final exception just
                  // reports the last one)
                  if (throwable != null && throwable instanceof ResolveException) {
                      log.debug(message, throwable);
                  } else {
                      log.debug(message);
                  }
                  break;
              case LOG_ERROR:
                  if (throwable != null) {
                      if ((throwable instanceof BundleException) &&
                              (((BundleException) throwable).getNestedException() != null)) {
                          throwable = ((BundleException) throwable).getNestedException();
                      }
                      log.error(message, throwable);
                  } else
                      log.error(message);
                  break;
              case LOG_INFO:
                  logInfoUnlessLame(message);
                  break;
              case LOG_WARNING:
                  // Handles special class loader errors from felix that have quite useful information
                  if (throwable != null) {
                      if (throwable instanceof ClassNotFoundException && isClassNotFoundsWeCareAbout(throwable)) {
                          log.debug("Class not found in bundle: " + message);
                      } else if (throwable instanceof BundleException) {
                          // Felix logs these when resolution fails, and it's useful to know why
                          log.warn(message + ": " + throwable.getMessage());
                      }
                  } else {
                      logInfoUnlessLame(message);
                  }
                  break;
              default:
                  log.debug("UNKNOWN[" + level + "]: " + message);
          }
      }
  
      protected void logInfoUnlessLame(String message) {
          if (message != null) {
              // I'm really, really sick of these stupid messages
              for (String dumbBit : messagesToIgnore)
                  if (message.contains(dumbBit))
                      return;
          }
          log.info(message);
      }
  
      public boolean isClassNotFoundsWeCareAbout(Throwable t) {
          if (t instanceof ClassNotFoundException) {
             String className = t.getMessage();
             if (className.contains("***") && t.getCause() instanceof ClassNotFoundException) {
                 className = t.getCause().getMessage();
             }
             if (!className.startsWith("org.springframework") && !className.endsWith("BeanInfo") && !className.endsWith("Editor")) {
                 return true;
             }
         }
         return false;
     }
 }