Class CachedContentFactory

java.lang.Object

org.eclipse.jetty.server.CachedContentFactory

All Implemented Interfaces:

HttpContent.ContentFactory

public class CachedContentFactory
extends Object
implements HttpContent.ContentFactory

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	CachedContentFactory.CachedHttpContent	MetaData associated with a context Resource.
class	CachedContentFactory.CachedPrecompressedHttpContent

Field Summary

Fields

Modifier and Type	Field	Description
private final ConcurrentMap<String, CachedContentFactory.CachedHttpContent>	_cache
private final AtomicInteger	_cachedFiles
private final AtomicInteger	_cachedSize
private final boolean	_etags
private final ResourceFactory	_factory
private int	_maxCachedFiles
private int	_maxCachedFileSize
private int	_maxCacheSize
private final MimeTypes	_mimeTypes
private final CachedContentFactory	_parent
private final CompressedContentFormat[]	_precompressedFormats
private final boolean	_useFileMappedBuffer
private static final Logger	LOG
private static final Map<CompressedContentFormat, CachedContentFactory.CachedPrecompressedHttpContent>	NO_PRECOMPRESSED

Constructor Summary

Constructors

Constructor	Description
CachedContentFactory(CachedContentFactory parent, ResourceFactory factory, MimeTypes mimeTypes, boolean useFileMappedBuffer, boolean etags, CompressedContentFormat[] precompressedFormats)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	flushCache()
int	getCachedFiles()
int	getCachedSize()
HttpContent	getContent(String pathInContext, int maxBufferSize)	Returns an entry from the cache, or creates a new one.
protected ByteBuffer	getDirectBuffer(Resource resource)
protected ByteBuffer	getIndirectBuffer(Resource resource)
protected ByteBuffer	getMappedBuffer(Resource resource)
int	getMaxCachedFiles()
int	getMaxCachedFileSize()
int	getMaxCacheSize()
protected boolean	isCacheable(Resource resource)
boolean	isUseFileMappedBuffer()
private HttpContent	load(String pathInContext, Resource resource, int maxBufferSize)
HttpContent	lookup(String pathInContext)	Deprecated.
void	setMaxCachedFiles(int maxCachedFiles)
void	setMaxCachedFileSize(int maxCachedFileSize)
void	setMaxCacheSize(int maxCacheSize)
private void	shrinkCache()
String	toString()

Methods inherited from class Object

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

Field Details

LOG

private static final Logger LOG

NO_PRECOMPRESSED

private static final Map<CompressedContentFormat, CachedContentFactory.CachedPrecompressedHttpContent> NO_PRECOMPRESSED

_cache

private final ConcurrentMap<String, CachedContentFactory.CachedHttpContent> _cache

_cachedSize

private final AtomicInteger _cachedSize

_cachedFiles

private final AtomicInteger _cachedFiles

_factory

private final ResourceFactory _factory

_parent

private final CachedContentFactory _parent

_mimeTypes

private final MimeTypes _mimeTypes

_etags

private final boolean _etags

_precompressedFormats

private final CompressedContentFormat[] _precompressedFormats

_useFileMappedBuffer

private final boolean _useFileMappedBuffer

_maxCachedFileSize

private int _maxCachedFileSize

_maxCachedFiles

private int _maxCachedFiles

_maxCacheSize

private int _maxCacheSize

Constructor Details

CachedContentFactory

public CachedContentFactory(CachedContentFactory parent,
 ResourceFactory factory,
 MimeTypes mimeTypes,
 boolean useFileMappedBuffer,
 boolean etags,
 CompressedContentFormat[] precompressedFormats)

Constructor.

Parameters:

parent - the parent resource cache

factory - the resource factory

mimeTypes - Mimetype to use for meta data

useFileMappedBuffer - true to file memory mapped buffers

etags - true to support etags

precompressedFormats - array of precompression formats to support

Method Details

getCachedSize

public int getCachedSize()

getCachedFiles

public int getCachedFiles()

getMaxCachedFileSize

public int getMaxCachedFileSize()

setMaxCachedFileSize

public void setMaxCachedFileSize(int maxCachedFileSize)

getMaxCacheSize

public int getMaxCacheSize()

setMaxCacheSize

public void setMaxCacheSize(int maxCacheSize)

getMaxCachedFiles

public int getMaxCachedFiles()

Returns:

the max number of cached files.

setMaxCachedFiles

public void setMaxCachedFiles(int maxCachedFiles)

Parameters:

maxCachedFiles - the max number of cached files.

isUseFileMappedBuffer

public boolean isUseFileMappedBuffer()

flushCache

public void flushCache()

lookup

@Deprecated
public HttpContent lookup(String pathInContext)
                   throws IOException

Deprecated.

Throws:

IOException

getContent

public HttpContent getContent(String pathInContext,
 int maxBufferSize)
                       throws IOException

Returns an entry from the cache, or creates a new one.

Specified by:

getContent in interface HttpContent.ContentFactory

Parameters:

pathInContext - The key into the cache

maxBufferSize - The maximum buffer size allocated for this request. For cached content, a larger buffer may have previously been allocated and returned by the HttpContent.getDirectBuffer() or HttpContent.getIndirectBuffer() calls.

Returns:

The entry matching pathInContext, or a new entry if no matching entry was found. If the content exists but is not cacheable, then a ResourceHttpContent instance is returned. If the resource does not exist, then null is returned.

Throws:

IOException - if the resource cannot be retrieved

isCacheable

protected boolean isCacheable(Resource resource)

Parameters:

resource - the resource to test

Returns:

whether the resource is cacheable. The default implementation tests the cache sizes.

load

private HttpContent load(String pathInContext,
 Resource resource,
 int maxBufferSize)

shrinkCache

private void shrinkCache()

getIndirectBuffer

protected ByteBuffer getIndirectBuffer(Resource resource)

getMappedBuffer

protected ByteBuffer getMappedBuffer(Resource resource)

getDirectBuffer

protected ByteBuffer getDirectBuffer(Resource resource)

toString

public String toString()

Overrides:

toString in class Object