org.apache.jackrabbit.oak.jcr.version

Class FrozenNodeLogger

java.lang.Object

org.apache.jackrabbit.oak.jcr.version.FrozenNodeLogger

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class FrozenNodeLogger
extends java.lang.Object
implements java.io.Closeable

Logger facility for frozen node lookups by identifier. Calls to lookupById(Tree) first check the feature toggle oak.logFrozenNodeLookup and then whether the given Tree is of type nt:frozenNode in which case the path of the tree is logged at INFO. Log messages are rate limited to one per second. If multiple frozen nodes are looked up by identifier with the period of one second, then only the first lookup is logged; the other lookups are not logged. Enabling DEBUG level for this class reveals the stack of the calling thread.

Constructor Summary

Constructors

Constructor and Description
FrozenNodeLogger(@NotNull Clock clock, @NotNull Whiteboard whiteboard)

Method Summary

Modifier and Type	Method and Description
void	close()
protected void	logFrozenNode(Tree tree)
void	lookupById(@NotNull Tree tree)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FrozenNodeLogger

public FrozenNodeLogger(@NotNull
                        @NotNull Clock clock,
                        @NotNull
                        @NotNull Whiteboard whiteboard)

Method Detail

lookupById

public final void lookupById(@NotNull
                             @NotNull Tree tree)

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

logFrozenNode

protected void logFrozenNode(Tree tree)