Mail::SpamAssassin::BaUsertContributed Perl DMail::SpamAssassin::BayesStore(3)
NAME
Mail::SpamAssassin::BayesStore - Storage Module for default Bayes
classifier
DESCRIPTION
This is the public API for the Bayesian store methods. Any
implementation of the storage module for the default Bayes classifier
must implement these methods.
METHODS
new public class (Mail::SpamAssassin::BayesStore) new
(Mail::SpamAssassin::Plugin::Bayes $bayes)
Description: This method creates a new instance of the
Mail::SpamAssassin::BayesStore object. You must pass in an
instance of the Mail::SpamAssassin::Plugin::Bayes object, which is
stashed for use throughout the module.
DB_VERSION
public instance (Integer) DB_VERSION \fIs0()
Description: This method returns the currently supported database
version for the implementation.
read_db_configs
public instance () read_db_configs ()
Description: This method reads any needed config variables from the
configuration object and then calls the
Mail::SpamAssassin::Plugin::Bayes read_db_configs method.
prefork_init
public instance (Boolean) prefork_init ()
Description: This optional method is called in the parent process
shortly before forking off child processes.
spamd_child_init
public instance (Boolean) spamd_child_init ()
Description: This optional method is called in a child process
shortly after being spawned.
tie_db_readonly
public instance (Boolean) tie_db_readonly ()
Description: This method opens up the database in readonly mode.
tie_db_writable
public instance (Boolean) tie_db_writable ()
Description: This method opens up the database in writable mode.
Any callers of this methods should ensure that they call untie_db()
afterwards.
untie_db
public instance () untie_db ()
Description: This method unties the database.
calculate_expire_delta
public instance (%) calculate_expire_delta (Integer $newest_atime,
Integer $start,
Integer
$max_expire_mult)
Description: This method performs a calculation on the data to
determine the optimum atime for token expiration.
token_expiration
public instance (Integer, Integer,
Integer, Integer) token_expiration(\% $opts,
Integer
$newest_atime,
Integer
$newdelta)
Description: This method performs the database specific expiration
of tokens based on the passed in $newest_atime and $newdelta.
expire_old_tokens
public instance (Boolean) expire_old_tokens (\% hashref)
Description: This method expires old tokens from the database.
expire_old_tokens_trapped
public instance (Boolean) expire_old_tokens_trapped (\% $opts)
Description: This methods does the actual token expiration.
XXX More docs here about the methodology and what not
sync_due
public instance (Boolean) sync_due ()
Description: This methods determines if a sync is due.
expiry_due
public instance (Boolean) expiry_due ()
Description: This methods determines if an expire is due.
seen_get
public instance (Char) seen_get (String $msgid)
Description: This method retrieves the stored value, if any, for
$msgid. The return value is the stored string ('s' for spam and
'h' for ham) or undef if $msgid is not found.
seen_put
public instance (Boolean) seen_put (String $msgid, Char $flag)
Description: This method records $msgid as the type given by $flag.
$flag is one of two values 's' for spam and 'h' for ham.
seen_delete
public instance (Boolean) seen_delete (String $msgid)
Description: This method removes $msgid from storage.
get_storage_variables
public instance (@) get_storage_variables ()
Description: This method retrieves the various administrative
variables used by the Bayes storage implementation.
The values returned in the array are in the following order:
0: scan count base
1: number of spam
2: number of ham
3: number of tokens in db
4: last expire atime
5: oldest token in db atime
6: db version value
7: last journal sync
8: last atime delta
9: last expire reduction count
10: newest token in db atime
dump_db_toks
public instance () dump_db_toks (String $template, String $regex, @
@vars)
Description: This method loops over all tokens, computing the
probability for the token and then printing it out according to the
passed in template.
set_last_expire
public instance (Boolean) _set_last_expire (Integer $time)
Description: This method sets the last expire time.
get_running_expire_tok
public instance (Time) get_running_expire_tok ()
Description: This method determines if an expire is currently
running and returns the time the expire started.
set_running_expire_tok
public instance (Time) set_running_expire_tok ()
Description: This method sets the running expire time to the
current time.
remove_running_expire_tok
public instance (Boolean) remove_running_expire_tok ()
Description: This method removes a currently set running expire
time.
tok_get
public instance (Integer, Integer, Time) tok_get (String $token)
Description: This method retrieves the specified token ($token)
from storage and returns it's spam count, ham acount and last
access time.
tok_get_all
public instance (\@) tok_get_all (@ @tokens)
Description: This method retrieves the specified tokens (@tokens)
from storage and returns an array ref of arrays spam count, ham
count and last access time.
tok_count_change
public instance (Boolean) tok_count_change (Integer $spam_count,
Integer $ham_count,
String $token,
Time $atime)
Description: This method takes a $spam_count and $ham_count and
adds it to $token along with updating $tokens atime with $atime.
multi_tok_count_change
public instance (Boolean) multi_tok_count_change (Integer
$spam_count,
Integer $ham_count,
\% $tokens,
String $atime)
Description: This method takes a $spam_count and $ham_count and
adds it to all of the tokens in the $tokens hash ref along with
updating each tokens atime with $atime.
nspam_nham_get
public instance (Integer, Integer) nspam_nham_get ()
Description: This method retrieves the total number of spam and the
total number of ham currently under storage.
nspam_nham_change
public instance (Boolean) nspam_nham_change (Integer $num_spam,
Integer $num_ham)
Description: This method updates the number of spam and the number
of ham in the database.
tok_touch
public instance (Boolean) tok_touch (String $token,
Time $atime)
Description: This method updates the given tokens ($token) access
time.
tok_touch_all
public instance (Boolean) tok_touch_all (\@ $tokens,
Time $atime)
Description: This method does a mass update of the given list of
tokens $tokens, if the existing token atime is < $atime.
cleanup
public instance (Boolean) cleanup ()
Description: This method performs any cleanup necessary before
moving onto the next operation.
get_magic_re
public instance get_magic_re (String)
Description: This method returns a regexp which indicates a magic
token.
sync
public instance (Boolean) sync (\% $opts)
Description: This method performs a sync of the database.
perform_upgrade
public instance (Boolean) perform_upgrade (\% $opts)
Description: This method is a utility method that performs any
necessary upgrades between versions. It should know how to handle
previous versions and what needs to happen to upgrade them.
A true return value indicates success.
clear_database
public instance (Boolean) clear_database ()
Description: This method deletes all records for a particular user.
Callers should be aware that any errors returned by this method
could causes the database to be inconsistent for the given user.
backup_database
public instance (Boolean) backup_database ()
Description: This method will dump the users database in a machine
readable format.
restore_database
public instance (Boolean) restore_database (String $filename,
Boolean $showdots)
Description: This method restores a database from the given
filename, $filename.
Callers should be aware that any errors returned by this method
could causes the database to be inconsistent for the given user.
db_readable
public instance (Boolean) db_readable ()
Description: This method returns whether or not the Bayes DB is
available in a readable state.
db_writable
public instance (Boolean) db_writable ()
Description: This method returns whether or not the Bayes DB is
available in a writable state.
perl v5.16.3 2014-02-07 Mail::SpamAssassin::BayesStore(3)
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