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weblogic.security.utils
Class ContextElementMessageStream

java.lang.Object
  java.io.InputStream
      weblogic.security.utils.ContextElementMessageStream

All Implemented Interfaces:

Closeable, AutoCloseable, ContextElementMessageStream

public class ContextElementMessageStream

extends InputStream

implements ContextElementMessageStream

This class is a convenience class for wrappering InputStreams that are used for ContextElements. In order to support multiple audit providers reading the stream from the beginning, the InputStream that is being wrappered must support Mark/Reset. Also, the wrapper will handle reseting the stream to the beginning and will represent the stream to the audit providers as not supporting mark/reset (to prevent them from resetting the mark). The readlimit passed into the constructor controls the maximum expected size of the stream that is resetable (up to Integer.MAX_VALUE), data larger than that is not guaranteed to be resetable (it is possible some InputStream implementations will not invalidate the mark, but it should be assumed they won't). Note that different InputStream implementations may be very different in how efficient they handle mark/reset, some may keep a buffer the size of the readLimit in memory, etc... So it is wise to set a reasonable readLimit for the expected size of the data handled by the wrappered stream. The ContextElement class will callResetToStart() on the stream when a getValue() is done that passes out a ContextElementMessageStream value. The stream must be handed out and serially read by one thread at a time, multiple threads cannot be handed out the stream and access it simultaneously.

resetToStart

public void resetToStart()

Specified by:

resetToStart in interface ContextElementMessageStream

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