LimitingRebufferer (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.io.util.WrappingRebufferer
- - org.apache.cassandra.io.util.LimitingRebufferer

All Implemented Interfaces:

java.lang.AutoCloseable, ReaderFileProxy, Rebufferer, Rebufferer.BufferHolder
```
@NotThreadSafe
public class LimitingRebufferer
extends WrappingRebufferer
```
Rebufferer wrapper that applies rate limiting.
Instantiated once per RandomAccessReader, thread-unsafe. The instances reuse themselves as the BufferHolder to avoid having to return a new object for each rebuffer call. Only one BufferHolder can be active at a time. Calling rebuffer(long) before the previously obtained buffer holder is released will throw AssertionError.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.cassandra.io.util.Rebufferer
  Rebufferer.BufferHolder

Field Summary
- Fields inherited from class org.apache.cassandra.io.util.WrappingRebufferer
  buffer, bufferHolder, offset, wrapped
- Fields inherited from interface org.apache.cassandra.io.util.Rebufferer
  EMPTY

Constructor Summary

Constructors
Constructor Description

LimitingRebufferer(Rebufferer wrapped, com.google.common.util.concurrent.RateLimiter limiter, int limitQuant)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Rebufferer.BufferHolder`	`rebuffer(long position)`	Rebuffer (move on or seek to) a given position, and return a buffer that can be used there.
`java.lang.String`	`toString()`

Methods inherited from class org.apache.cassandra.io.util.WrappingRebufferer
buffer, channel, close, closeReader, fileLength, getCrcCheckChance, offset, release

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.cassandra.io.util.Rebufferer.BufferHolder
floatBuffer, intBuffer

- Constructor Detail
  - LimitingRebufferer
```
public LimitingRebufferer(Rebufferer wrapped,
                          com.google.common.util.concurrent.RateLimiter limiter,
                          int limitQuant)
```
- Method Detail
  - rebuffer
```
public Rebufferer.BufferHolder rebuffer(long position)
```
    Description copied from interface: Rebufferer
    
    Rebuffer (move on or seek to) a given position, and return a buffer that can be used there. The only guarantee about the size of the returned data is that unless rebuffering at the end of the file, the buffer will not be empty and will contain the requested position, i.e. offset <= position < offset + bh.buffer().limit(), but the buffer will not be positioned there.
    
    Specified by:
    
    rebuffer in interface Rebufferer
    
    Overrides:
    
    rebuffer in class WrappingRebufferer
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class WrappingRebufferer