net_instaweb::SimpleBufferedApacheFetch Class Reference

#include "simple_buffered_apache_fetch.h"

Inheritance diagram for net_instaweb::SimpleBufferedApacheFetch:

Public Member Functions
	SimpleBufferedApacheFetch (const RequestContextPtr &request_context, RequestHeaders *request_headers, ThreadSystem *thread_system, request_rec *req, MessageHandler *handler)
void	Wait () LOCKS_EXCLUDED(mutex_)
	Blocks waiting for the fetch to complete.
bool	IsCachedResultValid (const ResponseHeaders &headers) override LOCKS_EXCLUDED(mutex_)
Public Member Functions inherited from net_instaweb::AsyncFetch
	AsyncFetch (const RequestContextPtr &request_ctx)
void	HeadersComplete ()
void	Done (bool success)
virtual bool	Write (const StringPiece &content, MessageHandler *handler)
virtual bool	Flush (MessageHandler *handler)
RequestHeaders *	request_headers ()
void	set_request_headers (RequestHeaders *headers)
void	SetRequestHeadersTakingOwnership (RequestHeaders *headers)
	Same as above, but takes ownership.
const RequestHeaders *	request_headers () const
ResponseHeaders *	response_headers ()
	See doc for request_headers and set_request_headers.
void	set_response_headers (ResponseHeaders *headers)
ResponseHeaders *	extra_response_headers ()
void	set_extra_response_headers (ResponseHeaders *headers)
virtual bool	IsBackgroundFetch () const
virtual void	Reset ()
bool	headers_complete () const
bool	content_length_known () const
int64	content_length () const
void	set_content_length (int64 x)
GoogleString	LoggingString ()
virtual const RequestContextPtr &	request_context ()
virtual AbstractLogRecord *	log_record ()
void	FixCacheControlForGoogleCache ()
Public Member Functions inherited from net_instaweb::Writer
virtual bool	Dump (Writer *writer, MessageHandler *message_handler)

Protected Member Functions
void	HandleHeadersComplete () override LOCKS_EXCLUDED(mutex_)
void	HandleDone (bool success) override LOCKS_EXCLUDED(mutex_)
bool	HandleFlush (MessageHandler *handler) override LOCKS_EXCLUDED(mutex_)
bool	HandleWrite (const StringPiece &sp, MessageHandler *handler) override LOCKS_EXCLUDED(mutex_)

Additional Inherited Members
Static Public Member Functions inherited from net_instaweb::AsyncFetch
static bool	IsGoogleCacheVia (StringPiece via_value)
Static Public Attributes inherited from net_instaweb::AsyncFetch
static const int	kContentLengthUnknown = -1

Detailed Description

Links an apache request_rec* to an AsyncFetch, adding the ability to block based on a condition variable. Unlike ApacheFetch this always buffers and implements no policy, nor does it try to use Apache thread for any rewriting — a scheduler thread should be used along with this.

Constructor & Destructor Documentation

net_instaweb::SimpleBufferedApacheFetch::SimpleBufferedApacheFetch	(	const RequestContextPtr &	request_context,
		RequestHeaders *	request_headers,
		ThreadSystem *	thread_system,
		request_rec *	req,
		MessageHandler *	handler
	)

Takes ownership of request_headers. req is expected to survive at least until Wait() returns.

Member Function Documentation

bool net_instaweb::SimpleBufferedApacheFetch::IsCachedResultValid ( const ResponseHeaders &  headers )

overridevirtual

Is the cache entry corresponding to headers valid? Default is that it is valid. Sub-classes can provide specific implementations, e.g., based on cache invalidation timestamp in domain specific options. Used by CacheUrlAsyncFetcher.

Todo:

TODO(nikhilmadan): Consider making this virtual so that subclass authors are forced to look at this function.

Reimplemented from net_instaweb::AsyncFetch.

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

• pagespeed/apache/simple_buffered_apache_fetch.h