Page Speed Optimization Libraries
1.8.31.3
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A server context with features specific to a PSOL port on a unix system. More...
#include "system_server_context.h"
Public Types | |
enum | AdminSource { kPageSpeedAdmin, kStatistics, kOther } |
Public Member Functions | |
SystemServerContext (RewriteDriverFactory *factory, StringPiece hostname, int port) | |
void | FlushCacheIfNecessary () |
SystemRewriteOptions * | global_system_rewrite_options () |
GoogleString | hostname_identifier () |
virtual void | ChildInit (SystemRewriteDriverFactory *factory) |
Called by SystemRewriteDriverFactory::ChildInit. See documentation there. | |
void | CreateLocalStatistics (Statistics *global_statistics, SystemRewriteDriverFactory *factory) |
bool | initialized () const |
virtual void | ApplySessionFetchers (const RequestContextPtr &req, RewriteDriver *driver) |
void | AddHtmlRewriteTimeUs (int64 rewrite_time_us) |
virtual void | CollapseConfigOverlaysAndComputeSignatures () |
virtual const SystemRewriteOptions * | SpdyGlobalConfig () const |
void | ConsoleHandler (const SystemRewriteOptions &options, AdminSource source, const QueryParams &query_params, AsyncFetch *fetch) |
void | MessageHistoryHandler (AdminSource source, AsyncFetch *fetch) |
Displays recent Info/Warning/Error messages. | |
void | StatisticsGraphsHandler (Writer *writer) |
Deprecated handler for graphs in the PSOL console. | |
void | AdminPage (bool is_global, const GoogleUrl &stripped_gurl, const QueryParams &query_params, const RewriteOptions *options, AsyncFetch *fetch) |
void | StatisticsPage (bool is_global, const QueryParams &query_params, const RewriteOptions *options, AsyncFetch *fetch) |
Static Public Member Functions | |
static void | InitStats (Statistics *statistics) |
Protected Member Functions | |
virtual bool | UpdateCacheFlushTimestampMs (int64 timestamp_ms) |
virtual void | MaybeApplySpdySessionFetcher (const RequestContextPtr &request, RewriteDriver *driver) |
Hook for implementations to support fetching directly from the spdy module. | |
void | ConsoleJsonHandler (const QueryParams ¶ms, AsyncFetch *fetch) |
Returns JSON used by the PageSpeed Console JavaScript. | |
void | StatisticsHandler (bool is_global_request, AdminSource source, AsyncFetch *fetch) |
void | PrintSpdyConfig (AdminSource source, AsyncFetch *fetch) |
Print details fo the SPDY configuration. | |
void | PrintNormalConfig (AdminSource source, AsyncFetch *fetch) |
Print details fo the non-SPDY configuration. | |
void | PrintCaches (bool is_global, AdminSource source, const QueryParams &query_params, const RewriteOptions *options, AsyncFetch *fetch) |
void | PrintHistograms (bool is_global_request, AdminSource source, AsyncFetch *fetch) |
Print histograms showing the dynamics of server activity. | |
Variable * | statistics_404_count () |
A server context with features specific to a PSOL port on a unix system.
Identifies whether the user arrived at an admin page from a /pagespeed_admin handler or a /**_pagespeed_statistics handler. The main difference between these is that the _admin site might in the future grant more privileges than the statistics site did, such as flushing cache. But it also affects the syntax of the links created to sub-pages in the top navigation bar.
void net_instaweb::SystemServerContext::AddHtmlRewriteTimeUs | ( | int64 | rewrite_time_us | ) |
Accumulate in a histogram the amount of time spent rewriting HTML.
void net_instaweb::SystemServerContext::AdminPage | ( | bool | is_global, |
const GoogleUrl & | stripped_gurl, | ||
const QueryParams & | query_params, | ||
const RewriteOptions * | options, | ||
AsyncFetch * | fetch | ||
) |
Handle a request for /pagespeed_admin/**, which is a launching point for all the administrator pages including stats, message-histogram, console, etc.
virtual void net_instaweb::SystemServerContext::ApplySessionFetchers | ( | const RequestContextPtr & | req, |
RewriteDriver * | driver | ||
) | [virtual] |
Normally we just fetch with the default UrlAsyncFetcher, generally serf, but there are some cases where we need to do something more complex:
Reimplemented from net_instaweb::ServerContext.
virtual void net_instaweb::SystemServerContext::CollapseConfigOverlaysAndComputeSignatures | ( | ) | [virtual] |
Hook called after all configuration parsing is done to support implementers like ApacheServerContext that need to collapse configuration inside the config overlays into actual RewriteOptions objects. It will also compute signatures when done, and by default that's the only thing it does.
Reimplemented in net_instaweb::ApacheServerContext.
void net_instaweb::SystemServerContext::ConsoleHandler | ( | const SystemRewriteOptions & | options, |
AdminSource | source, | ||
const QueryParams & | query_params, | ||
AsyncFetch * | fetch | ||
) |
Handler which serves PSOL console. Note: ConsoleHandler always succeeds.
void net_instaweb::SystemServerContext::CreateLocalStatistics | ( | Statistics * | global_statistics, |
SystemRewriteDriverFactory * | factory | ||
) |
Initialize this ServerContext to have its own statistics domain. Must be called after global_statistics has been created and had ::InitStats called on it.
Implementations should call this method on every request, both for html and resources, to avoid serving stale resources.
bool net_instaweb::SystemServerContext::initialized | ( | ) | const [inline] |
Whether ChildInit() has been called yet. Exposed so debugging code can verify initialization proceeded properly.
void net_instaweb::SystemServerContext::PrintCaches | ( | bool | is_global, |
AdminSource | source, | ||
const QueryParams & | query_params, | ||
const RewriteOptions * | options, | ||
AsyncFetch * | fetch | ||
) | [protected] |
Print statistics about the caches. In the future this will also be a launching point for examining cache entries and purging them.
virtual const SystemRewriteOptions* net_instaweb::SystemServerContext::SpdyGlobalConfig | ( | ) | const [virtual] |
Returns the spdy-specific configuration, or NULL if there is none specified.
Reimplemented in net_instaweb::ApacheServerContext.
void net_instaweb::SystemServerContext::StatisticsHandler | ( | bool | is_global_request, |
AdminSource | source, | ||
AsyncFetch * | fetch | ||
) | [protected] |
Handler for /mod_pagespeed_statistics and /ngx_pagespeed_statistics, as well as /...pagespeed__global_statistics. If the latter, is_global_request should be true.
Returns NULL on success, otherwise the returned error string should be passed along to the user and the contents of writer and content_type should be ignored.
In systems without a spdy-specific config, spdy_config should be null.
void net_instaweb::SystemServerContext::StatisticsPage | ( | bool | is_global, |
const QueryParams & | query_params, | ||
const RewriteOptions * | options, | ||
AsyncFetch * | fetch | ||
) |
Handle a request for the legacy /**_pagespeed_statistics page, which also serves as a launching point for a subset of the admin pages. Because the admin pages are not uniformly sensitive, an existing PageSpeed user might have granted public access to /mod_pagespeed_statistics, but we don't want that to automatically imply access to the server cache.
virtual bool net_instaweb::SystemServerContext::UpdateCacheFlushTimestampMs | ( | int64 | timestamp_ms | ) | [protected, virtual] |
Flush the cache by updating the cache flush timestamp in the global options. This will change its signature, which is part of the cache key, and so all previously cached entries will be unreachable.
Returns true if it actually updated the timestamp, false if the existing cache flush timestamp was newer or the same as the one provided.
Subclasses which add aditional configurations need to override this method to additionally update the cache flush timestamp in those other configurations. See ApacheServerContext::UpdateCacheFlushTimestampMs where the separate SpdyConfig that mod_pagespeed uses when using SPDY also needs to have it's timestamp bumped.