Package org.apache.solr.logging

Class LogWatcher<E>

java.lang.Object
org.apache.solr.logging.LogWatcher<E>
Direct Known Subclasses:
JulWatcher, Log4j2Watcher
public abstract class LogWatcher<E> extends Object
A Class to monitor Logging events and hold N events in memory

This is abstract so we can support both JUL and Log4j2 (and other logging platforms)

  • Field Details

    • history

      protected CircularList<org.apache.solr.common.SolrDocument> history

    • last

      protected long last

  • Constructor Details

    • LogWatcher

      public LogWatcher()

  • Method Details

    • getName

      public abstract String getName()
      Returns:
      The implementation name

    • getAllLevels

      public abstract List<String> getAllLevels()
      Returns:
      The valid level names for this framework

    • setLogLevel

      public abstract void setLogLevel(String category, String level)
      Sets the log level within this framework

    • getAllLoggers

      public abstract Collection<LoggerInfo> getAllLoggers()
      Returns:
      all registered loggers

    • setThreshold

      public abstract void setThreshold(String level)

    • getThreshold

      public abstract String getThreshold()

    • add

      public void add(E event, long timstamp)

    • getLastEvent

      public long getLastEvent()

    • getHistorySize

      public int getHistorySize()

    • getHistory

      public org.apache.solr.common.SolrDocumentList getHistory(long since, AtomicBoolean found)

    • toSolrDocument

      public abstract org.apache.solr.common.SolrDocument toSolrDocument(E event)

    • registerListener

      public abstract void registerListener(ListenerConfig cfg)

    • reset

      public void reset()

    • newRegisteredLogWatcher

      public static LogWatcher<?> newRegisteredLogWatcher(LogWatcherConfig config, SolrResourceLoader loader)
      Create and register a LogWatcher.

      JUL and Log4j watchers are supported out-of-the-box. You can register your own LogWatcher implementation via the plugins architecture

      Parameters:
      config - a LogWatcherConfig object, containing the configuration for this LogWatcher.
      loader - a SolrResourceLoader, to be used to load plugin LogWatcher implementations. Can be null if
      Returns:
      a LogWatcher configured for the container's logging framework