The goal of this patch is to avoid unecessary flush of the L1 cache on
creating a new CGI object each time C4::Languages::getlanguage is called
without a CGI object.
The new class Koha::Cache::Memory::Lite must be flushed by the CGI
constructor overide done in the psgi file. This new class will ease
caching of specific stuffs used by running script.
Test plan:
At the OPAC and the intranet interfaces:
Open 2 different browser session to simulate several users
- Clear the cookies of the browsers
- User 1 (U1) an User 2 (U2) should be set to the default language
(depending on the browser settings)
- U1 chooses another language
- U2 refreshes and the language used must be the default one
- U2 chooses a third language
- U1 refreshes and must be still using the one he has choosen.
Try to use a language which is not defined:
Add &language=es-ES (if es-ES is not translated) to the url, you should
not see the Spanish interface.
Signed-off-by: Jacek Ablewicz <abl@biblos.pk.edu.pl>
Signed-off-by: Jesse Weaver <jweaver@bywatersolutions.com>
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
This makes Koha::Cache behave better by default. It will use memcached
if available to do shared caching, if that's not available it will fall
back to in-memory caching. It also allows for a singleton accessor to
allow a single cache to be shared within a process.
* Added tests to confirm UTF8-cleanness.
* Added minor fixups to stop warnings.
Test plan:
* The t/Cache.t file runs successfully with and without the
MEMCACHED_SERVERS envvar set (and memcached running in the
environment.)
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
At the moment we cache numerous pieces of information in module-level
variables which then do not get updated in other threads/processes when
they are changed by the user. This is a serious usability issue.
Examples of this include the way we treat sysprefs (there is now a
method to disable the syspref cache, but by default it is enabled),
notices, frameworks, field mappings, and koha-conf.xml, at least.
This patch sets the stage for eliminating this problem by making it
possible to convert module-level cache variables into variables that
are actually backed by whatever caching system may be configured. This
is done through a special Koha::Cache::Object class which can be tied
to the variables that are being used for caching and provided with a
constructor method/closure to allow the cache to be reloaded when it
expires. For example:
my $cache = Koha::Cache->new();
my $data = 'whatever';
my $variable = Koha::Cache->create_scalar(
{
'key' => 'whatever',
'timeout' => 2,
'constructor' => sub { return $data; },
}
);
print "$$variable\n"; # Prints "whatever"
The one change this necessitates for accessing the data is that the
variable must be dereferenced an additional time before use (i.e.
$$variable instead of $variable). There is no difference when the
variable tied is a hash (created with Koha::Cache->create_hash). This
is a small price to pay for Koha working in a multi-threaded, persistent
environment. This change will also make caching easier in general.
CHI was incompatible with the variable tying, so this patch also removes
the dependency on CHI, using instead Cache::Memcached::Fast,
Cache::FastMmap, and Cache::Memory, when they are available.
To test:
1) Apply patch.
2) Run unit test t/Cache.t (after setting the MEMCACHED_SERVERS and
CACHING_SYSTEM environment variables). As no changes were made to
the tests already in that file, this passing demonstrates there
are no regressions.
3) With memcached caching enabled (you must set the MEMCACHED_SERVERS
and CACHING_SYSTEM environment variables) and DEBUG turned on (i.e.
the DEBUG environment variable set to 1), try running a report via
the web service ([intranet]/cgi-bin/koha/svc/report?id=1 and check
your web server logs to confirm that there are messages like
"get_from_cache for intranet:report:id:1" in them.
4) If the reports worked, sign off.
NOTE: Technically you could test this without needing memcached by
installing libcache-fastmmap-perl and setting CACHING_SYSTEM to
'fastmmap' instead of 'memcached'. You could also install libcache-perl
and set CACHING_SYSTEM to 'memory' but there would be little point as
the cached variables would go out of scope in between runs.
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Implements cache handlers for Memcached, mmap shared-file persistent,
and in-process memory caches. If CHI is unavailable, Koha::Cache::Memcached
will fall back to using Cache::Memcached::Fast, or caching will be skipped
without croaking.
To test: run t/Cache.t with the following options, before and after
installing CHI:
2. Tests 3-9 should be skipped with the following:
export CACHING_SYSTEM=
2. You should receive two failures with the following if CHI is not installed:
export CACHING_SYSTEM=memory
3. You should receive two failures with the following if CHI is not installed:
export CACHING_SYSTEM=fastmmap
4. You will need memcached activated for the following to work (but it
will work both with and without CHI):
export CACHING_SYSTEM=memcached
export MEMCACHED_SERVERS=127.0.0.1:11211
export MEMCACHED_NAMESPACE=KOHA
5. You should receive two failures with the following:
export CACHING_SYSTEM=thisdoesntexist
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Works as advertised, now we need a follow up to add the new dependency.
http://bugs.koha-community.org/show_bug.cgi?id=8029
This patch introduces some new features for caching system:
* the type of caching is retrieved from ENV variable in httpd configuration if not forced when the ->new() is called.
* if $ENV{DEBUG} is ON, you'll have feedback when something is set or read from cache
* the Koha::Cache->is_cache_active is now available and will return 1 if there is a caching system available. It's a replacement for C4::Context->ismemcached
* fixes the mistake for debug/compress_threshold and expire_time parameters
The 2 report web service modules have been updated to use this new API
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Unit test for Koha/Cache.pm (which includes Koha/Cache/Memcached.pm)
Note that in order to test Koha::Cache you must export the environment variable
MEMCACHED_SERVERS. For example:
$ export MEMCACHED_SERVERS=127.0.0.1:11211
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Jonathan Druart
Robin Sheat
Jared Camins-Esakov
Paul Poulain
Chris Hall