Base class for data storage in the file system. More...

Inheritance diagram for FileCacheBase:

[legend]

Public Member Functions
	cacheTimestamp ()
	Get the last-modified timestamp of the cache file.

	clearCache ()
	Clear the cache for this page.

	fetchText ()
	Get the uncompressed text from the cache.

	getMissesRecent ()
	Roughly gets the cache misses in the last hour by unique visitors.

	incrMissesRecent (WebRequest $request)
	Roughly increments the cache misses in the last hour by unique visitors.

	isCached ()
	Check if the cache file exists.

	isCacheGood ( $timestamp='')
	Check if up to date cache file exists.

	saveText ( $text)
	Save and compress text to the cache.

Protected Member Functions
	__construct ()

	baseCacheDirectory ()
	Get the base file cache directory.

	cacheDirectory ()
	Get the base cache directory (not specific to this file)

	cacheMissKey (BagOStuff $cache)

	cachePath ()
	Get the path to the cache file.

	checkCacheDirs ()
	Create parent directors of $this->cachePath()

	hashSubdirectory ()
	Return relative multi-level hash subdirectory (with trailing slash) or the empty string if not $wgFileCacheDepth.

	typeSubdirectory ()
	Get the cache type subdirectory (with trailing slash) An extending class could use that method to alter the type -> directory mapping.

	useGzip ()
	Check if the cache is gzipped.

Protected Attributes
	$mCached

	$mExt = 'cache'

	$mFilePath

	$mKey

	$mType = 'object'

	$mUseGzip

Private Attributes
const	MISS_FACTOR = 15

const	MISS_TTL_SEC = 3600

Detailed Description

Base class for data storage in the file system.

Definition at line 31 of file FileCacheBase.php.

Constructor & Destructor Documentation

◆ __construct()

FileCacheBase::__construct ( )

protected

Definition at line 44 of file FileCacheBase.php.

References $wgUseGzip.

Member Function Documentation

◆ baseCacheDirectory()

FileCacheBase::baseCacheDirectory ( )

finalprotected

Get the base file cache directory.

Returns: string

Definition at line 54 of file FileCacheBase.php.

References $wgFileCacheDirectory.

Referenced by HTMLFileCache\cacheDirectory(), and ResourceFileCache\cacheDirectory().

◆ cacheDirectory()

FileCacheBase::cacheDirectory ( )

abstractprotected

Get the base cache directory (not specific to this file)

Returns: string

Reimplemented in HTMLFileCache, and ResourceFileCache.

Referenced by cachePath().

◆ cacheMissKey()

FileCacheBase::cacheMissKey ( BagOStuff $cache )

protected

Parameters

BagOStuff $cache Instance that the key will be used with

Returns: string

Definition at line 272 of file FileCacheBase.php.

References $cache.

Referenced by getMissesRecent(), and incrMissesRecent().

◆ cachePath()

FileCacheBase::cachePath ( )

protected

Get the path to the cache file.

Returns: string

Definition at line 70 of file FileCacheBase.php.

References $mFilePath, cacheDirectory(), hashSubdirectory(), typeSubdirectory(), and useGzip().

Referenced by cacheTimestamp(), checkCacheDirs(), clearCache(), fetchText(), isCached(), HTMLFileCache\loadFromFileCache(), and saveText().

◆ cacheTimestamp()

FileCacheBase::cacheTimestamp ( )

Get the last-modified timestamp of the cache file.

Returns: string|bool TS_MW timestamp

Definition at line 105 of file FileCacheBase.php.

References cachePath(), and wfTimestamp().

Referenced by isCacheGood(), and ResourceLoader\tryRespondFromFileCache().

◆ checkCacheDirs()

FileCacheBase::checkCacheDirs ( )

protected

Create parent directors of $this->cachePath()

Returns: void

Definition at line 194 of file FileCacheBase.php.

References cachePath(), and wfMkdirParents().

Referenced by saveText().

◆ clearCache()

FileCacheBase::clearCache ( )

Clear the cache for this page.

Returns: void

Definition at line 183 of file FileCacheBase.php.

References cachePath().

◆ fetchText()

FileCacheBase::fetchText ( )

Get the uncompressed text from the cache.

Returns: string

Definition at line 146 of file FileCacheBase.php.

References cachePath(), and useGzip().

Referenced by ResourceLoader\tryRespondFromFileCache().

◆ getMissesRecent()

FileCacheBase::getMissesRecent ( )

Roughly gets the cache misses in the last hour by unique visitors.

Returns: int

Definition at line 262 of file FileCacheBase.php.

References $cache, and cacheMissKey().

Referenced by ResourceFileCache\isCacheWorthy().

◆ hashSubdirectory()

FileCacheBase::hashSubdirectory ( )

protected

Return relative multi-level hash subdirectory (with trailing slash) or the empty string if not $wgFileCacheDepth.

Returns: string

Definition at line 214 of file FileCacheBase.php.

References $wgFileCacheDepth.

Referenced by cachePath().

◆ incrMissesRecent()

FileCacheBase::incrMissesRecent ( WebRequest $request )

Roughly increments the cache misses in the last hour by unique visitors.

Parameters

WebRequest $request

Returns: void

Definition at line 233 of file FileCacheBase.php.

References $cache, cacheMissKey(), and WebRequest\getIP().

◆ isCached()

FileCacheBase::isCached ( )

Check if the cache file exists.

Returns: bool

Definition at line 93 of file FileCacheBase.php.

References $mCached, and cachePath().

Referenced by isCacheGood(), and ResourceFileCache\isCacheWorthy().

◆ isCacheGood()

FileCacheBase::isCacheGood ( $timestamp = '' )

Check if up to date cache file exists.

Parameters

string $timestamp MW_TS timestamp

Returns: bool

Definition at line 119 of file FileCacheBase.php.

References $wgCacheEpoch, cacheTimestamp(), isCached(), and wfDebug().

Referenced by ResourceLoader\tryRespondFromFileCache().

◆ saveText()

FileCacheBase::saveText ( $text )

Save and compress text to the cache.

Parameters

string $text

Returns: string|false Compressed text

Definition at line 161 of file FileCacheBase.php.

References cachePath(), checkCacheDirs(), useGzip(), and wfDebug().

Referenced by HTMLFileCache\saveToFileCache().

◆ typeSubdirectory()

FileCacheBase::typeSubdirectory ( )

protected

Get the cache type subdirectory (with trailing slash) An extending class could use that method to alter the type -> directory mapping.

See also: HTMLFileCache::typeSubdirectory() for an example.

Returns: string

Reimplemented in HTMLFileCache.

Definition at line 205 of file FileCacheBase.php.

Referenced by cachePath().

◆ useGzip()

FileCacheBase::useGzip ( )

protected

Check if the cache is gzipped.

Returns: bool

Definition at line 138 of file FileCacheBase.php.

References $mUseGzip.

Referenced by cachePath(), fetchText(), HTMLFileCache\loadFromFileCache(), saveText(), and HTMLFileCache\saveToFileCache().

Member Data Documentation

◆ $mCached

FileCacheBase::$mCached

protected

Definition at line 38 of file FileCacheBase.php.

Referenced by isCached().

◆ $mExt

FileCacheBase::$mExt = 'cache'

protected

Definition at line 34 of file FileCacheBase.php.

◆ $mFilePath

FileCacheBase::$mFilePath

protected

Definition at line 35 of file FileCacheBase.php.

Referenced by cachePath().

◆ $mKey

FileCacheBase::$mKey

protected

Definition at line 32 of file FileCacheBase.php.

◆ $mType

FileCacheBase::$mType = 'object'

protected

Definition at line 33 of file FileCacheBase.php.

◆ $mUseGzip

FileCacheBase::$mUseGzip

protected

Definition at line 36 of file FileCacheBase.php.

Referenced by useGzip().

◆ MISS_FACTOR

const FileCacheBase::MISS_FACTOR = 15

private

Definition at line 41 of file FileCacheBase.php.

◆ MISS_TTL_SEC

const FileCacheBase::MISS_TTL_SEC = 3600

private

Definition at line 42 of file FileCacheBase.php.

The documentation for this class was generated from the following file:

includes/cache/FileCacheBase.php

Public Member Functions

Protected Member Functions

Protected Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ baseCacheDirectory()

◆ cacheDirectory()

◆ cacheMissKey()

◆ cachePath()

◆ cacheTimestamp()

◆ checkCacheDirs()

◆ clearCache()

◆ fetchText()

◆ getMissesRecent()

◆ hashSubdirectory()

◆ incrMissesRecent()

◆ isCached()

◆ isCacheGood()

◆ saveText()

◆ typeSubdirectory()

◆ useGzip()

Member Data Documentation

◆ $mCached

◆ $mExt

◆ $mFilePath

◆ $mKey

◆ $mType

◆ $mUseGzip

◆ MISS_FACTOR

◆ MISS_TTL_SEC