Page Speed Optimization Libraries  1.9.32.1
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net_instaweb::CacheExtender Class Reference

#include "cache_extender.h"

Inheritance diagram for net_instaweb::CacheExtender:
net_instaweb::RewriteFilter net_instaweb::CommonFilter

Public Member Functions

 CacheExtender (RewriteDriver *driver)
 
virtual void StartDocumentImpl ()
 
virtual void StartElementImpl (HtmlElement *element)
 
virtual void EndElementImpl (HtmlElement *element)
 
virtual const char * Name () const
 
virtual const char * id () const
 
RewriteContextMakeNestedContext (RewriteContext *parent, const ResourceSlotPtr &slot)
 
- Public Member Functions inherited from net_instaweb::RewriteFilter
 RewriteFilter (RewriteDriver *driver)
 
virtual void DetermineEnabled (GoogleString *disabled_reason)
 
virtual const UrlSegmentEncoder * encoder () const
 
virtual RewriteContextMakeNestedRewriteContext (RewriteContext *parent, const ResourceSlotPtr &slot)
 
virtual void EncodeUserAgentIntoResourceContext (ResourceContext *context) const
 
virtual const
RewriteOptions::Filter
RelatedFilters (int *num_filters) const
 
virtual const StringPieceVector * RelatedOptions () const
 
- Public Member Functions inherited from net_instaweb::CommonFilter
 CommonFilter (RewriteDriver *driver)
 
const GoogleUrl & base_url () const
 Getters. More...
 
const GoogleUrl & decoded_base_url () const
 
RewriteDriverdriver () const
 
HtmlElement * noscript_element () const
 
void InsertNodeAtBodyEnd (HtmlNode *data)
 
virtual void StartDocument ()
 Note: Don't overload these methods, overload the implementers instead!
 
virtual void StartElement (HtmlElement *element)
 
virtual void EndElement (HtmlElement *element)
 
virtual void Characters (HtmlCharactersNode *characters)
 
ResourcePtr CreateInputResource (StringPiece input_url, bool *is_authorized)
 
ResourcePtr CreateInputResourceOrInsertDebugComment (StringPiece input_url, HtmlElement *element)
 
void ResolveUrl (StringPiece input_url, GoogleUrl *out_url)
 
bool BaseUrlIsValid () const
 
bool DebugMode () const
 
bool CanAddPagespeedOnloadToImage (const HtmlElement &)
 
virtual void LogFilterModifiedContent ()
 
virtual
RewriteDriver::InlineAuthorizationPolicy 
AllowUnauthorizedDomain () const
 
virtual bool IntendedForInlining () const
 

Static Public Member Functions

static void InitStats (Statistics *statistics)
 
- Static Public Member Functions inherited from net_instaweb::RewriteFilter
static StringPiece GetCharsetForScript (const Resource *script, const StringPiece attribute_charset, const StringPiece enclosing_charset)
 
static GoogleString GetCharsetForStylesheet (const Resource *stylesheet, const StringPiece attribute_charset, const StringPiece enclosing_charset)
 
- Static Public Member Functions inherited from net_instaweb::CommonFilter
static bool ExtractMetaTagDetails (const HtmlElement &element, const ResponseHeaders *headers, GoogleString *content, GoogleString *mime_type, GoogleString *charset)
 

Static Public Attributes

static const char kCacheExtensions []
 
static const char kNotCacheable []
 
- Static Public Attributes inherited from net_instaweb::CommonFilter
static const char kCreateResourceFailedDebugMsg []
 Debug message to be inserted when resource creation fails.
 

Protected Member Functions

virtual bool ComputeOnTheFly () const
 
virtual RewriteContextMakeRewriteContext ()
 
- Protected Member Functions inherited from net_instaweb::RewriteFilter
virtual const char * LoggingId ()
 This class logs using id().
 
- Protected Member Functions inherited from net_instaweb::CommonFilter
ServerContextserver_context () const
 
const RewriteOptionsrewrite_options ()
 

Friends

class Context
 

Detailed Description

Rewrites resources without changing their content – just their URLs and headers. The original intent of this filter was limited to cache extension. However, its scope has been expanded to include domain sharding and moving static resources to cookieless domains or CDNs.

Todo:
TODO(jmarantz): rename this class to something more generic, like RenameUrlFilter or ProxyUrlFilter.

Member Function Documentation

virtual bool net_instaweb::CacheExtender::ComputeOnTheFly ( ) const
protectedvirtual

If this method returns true, the data output of this filter will not be cached, and will instead be recomputed on the fly every time it is needed. (However, the transformed URL and similar metadata in CachedResult will be kept in cache).

The default implementation returns false.

Reimplemented from net_instaweb::RewriteFilter.

RewriteContext* net_instaweb::CacheExtender::MakeNestedContext ( RewriteContext parent,
const ResourceSlotPtr &  slot 
)

Creates a nested rewrite for given parent and slot, and returns it. The result is not registered with the parent.

virtual RewriteContext* net_instaweb::CacheExtender::MakeRewriteContext ( )
protectedvirtual

Generates a RewriteContext appropriate for this filter. Default implementation returns NULL. This must be overridden by filters. This is used to implement Fetch.

Reimplemented from net_instaweb::RewriteFilter.

virtual void net_instaweb::CacheExtender::StartDocumentImpl ( )
inlinevirtual

Overload these implementer methods: Intentionally left abstract so that implementers don't forget to change the name from Blah to BlahImpl.

Implements net_instaweb::CommonFilter.


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