[usenet/newsstats.git] / gatherstats.pl

#! /usr/bin/perl -W
#
# gatherstats.pl
#
# This script will gather statistical information from a database
# containing headers and other information from a INN feed.
# 
# It is part of the NewsStats package.
#
# Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
#
# It can be redistributed and/or modified under the same terms under 
# which Perl itself is published.

BEGIN {
  our $VERSION = "0.01";
  use File::Basename;
  push(@INC, dirname($0));
}
use strict;

use NewsStats qw(:DEFAULT :TimePeriods ListNewsgroups ReadGroupList);

use DBI;
use Getopt::Long qw(GetOptions);
Getopt::Long::config ('bundling');

################################# Definitions ##################################

# define types of information that can be gathered
# all / groups (/ clients / hosts)
my %LegalStats;
@LegalStats{('all','groups')} = ();

################################# Main program #################################

### read commandline options
my ($OptCheckgroupsFile,$OptClientsDB,$OptDebug,$OptGroupsDB,$OptTLH,
    $OptHostsDB,$OptMonth,$OptRawDB,$OptStatsType,$OptTest);
GetOptions ('c|checkgroups=s' => \$OptCheckgroupsFile,
            'clientsdb=s'     => \$OptClientsDB,
            'd|debug!'        => \$OptDebug,
            'groupsdb=s'      => \$OptGroupsDB,
            'hierarchy=s'     => \$OptTLH,
            'hostsdb=s'       => \$OptHostsDB,
            'm|month=s'       => \$OptMonth,
            'rawdb=s'         => \$OptRawDB,
            's|stats=s'       => \$OptStatsType,
            't|test!'         => \$OptTest,
            'h|help'          => \&ShowPOD,
            'V|version'       => \&ShowVersion) or exit 1;

### read configuration
my %Conf = %{ReadConfig($HomePath.'/newsstats.conf')};

### override configuration via commandline options
my %ConfOverride;
$ConfOverride{'DBTableRaw'}   = $OptRawDB if $OptRawDB;
$ConfOverride{'DBTableGrps'}  = $OptGroupsDB if $OptGroupsDB;
$ConfOverride{'DBTableClnts'} = $OptClientsDB if $OptClientsDB;
$ConfOverride{'DBTableHosts'} = $OptHostsDB if $OptHostsDB;
$ConfOverride{'TLH'} = $OptTLH if $OptTLH;
&OverrideConfig(\%Conf,\%ConfOverride);

### get type of information to gather, defaulting to 'all'
$OptStatsType = 'all' if !$OptStatsType;
&Bleat(2, sprintf("Unknown type '%s'!", $OptStatsType))
  if !exists($LegalStats{$OptStatsType});

### get time period from --month
# get verbal description of time period, drop SQL code
my ($Period) = &GetTimePeriod($OptMonth);
&Bleat(2,"--month option has an invalid format - please use 'YYYY-MM' or ".
         "'YYYY-MM:YYYY-MM'!") if (!$Period or $Period eq 'all time');

### reformat $Conf{'TLH'}
my $TLH;
if ($Conf{'TLH'}) {
  # $Conf{'TLH'} is parsed as an array by Config::Auto;
  # make a flat list again, separated by :
  if (ref($Conf{'TLH'}) eq 'ARRAY') {
    $TLH = join(':',@{$Conf{'TLH'}});
  } else {
    $TLH  = $Conf{'TLH'};
  }
  # strip whitespace
  $TLH =~ s/\s//g;
  # add trailing dots if none are present yet
  # (using negative look-behind assertions)
  $TLH =~ s/(?<!\.):/.:/g;
  $TLH =~ s/(?<!\.)$/./;
  # check for illegal characters
  &Bleat(2,'Config error - illegal characters in TLH definition!')
    if ($TLH !~ /^[a-zA-Z0-9:+.-]+$/);
  # escape dots
  $TLH =~ s/\./\\./g;
  if ($TLH =~ /:/) {
    # reformat $TLH from a:b to (a)|(b),
    # e.g. replace ':' by ')|('
    $TLH =~ s/:/)|(/g;
    $TLH = '(' . $TLH . ')';
  };
};

# read list of newsgroups from --checkgroups
# into a hash
my %ValidGroups = %{ReadGroupList($OptCheckgroupsFile)} if $OptCheckgroupsFile;

### init database
my $DBHandle = InitDB(\%Conf,1);

### get data for each month
&Bleat(1,'Test mode. Database is not updated.') if $OptTest;
foreach my $Month (&ListMonth($Period)) {

  print "---------- $Month ----------\n" if $OptDebug;

  if ($OptStatsType eq 'all' or $OptStatsType eq 'groups') {
    ### ----------------------------------------------
    ### get groups data (number of postings per group)
    # get groups data from raw table for given month
    my $DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroups FROM %s.%s ".
                                             "WHERE day LIKE ? AND NOT disregard",
                                             $Conf{'DBDatabase'},
                                             $Conf{'DBTableRaw'}));
    $DBQuery->execute($Month.'-%')
      or &Bleat(2,sprintf("Can't get groups data for %s from %s.%s: ".
                          "$DBI::errstr\n",$Month,
                          $Conf{'DBDatabase'},$Conf{'DBTableRaw'}));

    # count postings per group
    my %Postings;
    while (($_) = $DBQuery->fetchrow_array) {
      # get list oft newsgroups and hierarchies from Newsgroups:
      my %Newsgroups = ListNewsgroups($_,$TLH,
                                      $OptCheckgroupsFile ? \%ValidGroups : '');
      # count each newsgroup and hierarchy once
      foreach (sort keys %Newsgroups) {
        $Postings{$_}++;
      };
    };

    # add valid but empty groups if --checkgroups is set
    if (%ValidGroups) {
      foreach (sort keys %ValidGroups) {
        if (!defined($Postings{$_})) {
          $Postings{$_} = 0 ;
          warn (sprintf("ADDED: %s as empty group\n",$_));
        }
      };
    };

    # delete old data for that month
    if (!$OptTest) {
      $DBQuery = $DBHandle->do(sprintf("DELETE FROM %s.%s WHERE month = ?",
                                       $Conf{'DBDatabase'},$Conf{'DBTableGrps'}),
                                       undef,$Month)
        or &Bleat(2,sprintf("Can't delete old groups data for %s from %s.%s: ".
                            "$DBI::errstr\n",$Month,
                            $Conf{'DBDatabase'},$Conf{'DBTableGrps'}));
    };

    print "----- GroupStats -----\n" if $OptDebug;
    foreach my $Newsgroup (sort keys %Postings) {
      print "$Newsgroup => $Postings{$Newsgroup}\n" if $OptDebug;
      if (!$OptTest) {
        # write to database
        $DBQuery = $DBHandle->prepare(sprintf("INSERT INTO %s.%s ".
                                              "(month,newsgroup,postings) ".
                                              "VALUES (?, ?, ?)",
                                              $Conf{'DBDatabase'},
                                              $Conf{'DBTableGrps'}));
        $DBQuery->execute($Month, $Newsgroup, $Postings{$Newsgroup})
          or &Bleat(2,sprintf("Can't write groups data for %s/%s to %s.%s: ".
                              "$DBI::errstr\n",$Month,$Newsgroup,
                              $Conf{'DBDatabase'},$Conf{'DBTableGrps'}));
        $DBQuery->finish;
      };
    };
  } else {
    # other types of information go here - later on
  };
};

### close handles
$DBHandle->disconnect;

__END__

################################ Documentation #################################

=head1 NAME

gatherstats - process statistical data from a raw source

=head1 SYNOPSIS

B<gatherstats> [B<-Vhdt>] [B<-m> I<YYYY-MM> | I<YYYY-MM:YYYY-MM>] [B<-s> I<stats] [B<-c> I<checkgroups file>]] [B<--hierarchy> I<TLH>] [B<--rawdb> I<database table>] [B<-groupsdb> I<database table>] [B<--clientsdb> I<database table>] [B<--hostsdb> I<database table>]

=head1 REQUIREMENTS

See L<doc/README>.

=head1 DESCRIPTION

This script will extract and process statistical information from a
database table which is fed from F<feedlog.pl> for a given time period
and write its results to (an)other database table(s). Entries marked
with I<'disregard'> in the database will be ignored; currently, you
have to set this flag yourself, using your database management tools.
You can exclude erroneous entries that way (e.g. automatic reposts
(think of cancels flood and resurrectors); spam; ...).

The time period to act on defaults to last month; you can assign
another time period or a single month via the B<--month> option (see
below).

By default B<gatherstats> will process all types of information; you
can change that using the B<--stats> option and assigning the type of
information to process. Currently that doesn't matter yet as only
processing of the number of postings per group per month is
implemented anyway.

Possible information types include:

=over 3

=item B<groups> (postings per group per month)

B<gatherstats> will examine Newsgroups: headers. Crosspostings will be
counted for each single group they appear in. Groups not in I<TLH>
will be ignored.

B<gatherstats> will also add up the number of postings for each
hierarchy level, but only count each posting once. A posting to
de.alt.test will be counted for de.alt.test, de.alt.ALL and de.ALL,
respectively. A crossposting to de.alt.test and de.alt.admin, on the
other hand, will be counted for de.alt.test and de.alt.admin each, but
only once for de.alt.ALL and de.ALL.

Data is written to I<DBTableGrps> (see L<doc/INSTALL>); you can
override that default through the B<--groupsdb> option.

=back

=head2 Configuration

B<gatherstats> will read its configuration from F<newsstats.conf>
which should be present in the same directory via Config::Auto.

See L<doc/INSTALL> for an overview of possible configuration options.

You can override configuration options via the B<--hierarchy>,
B<--rawdb>, B<--groupsdb>, B<--clientsdb> and B<--hostsdb> options,
respectively.

=head1 OPTIONS

=over 3

=item B<-V>, B<--version>

Print out version and copyright information and exit.

=item B<-h>, B<--help>

Print this man page and exit.

=item B<-d>, B<--debug>

Output debugging information to STDOUT while processing (number of
postings per group).

=item B<-t>, B<--test>

Do not write results to database. You should use B<--debug> in
conjunction with B<--test> ... everything else seems a bit pointless.

=item B<-m>, B<--month> I<YYYY-MM[:YYYY-MM]>

Set processing period to a single month in YYYY-MM format or to a time
period between two month in YYYY-MM:YYYY-MM format (two month, separated
by a colon). 


=item B<-s>, B<--stats> I<type>

Set processing type to one of I<all> and I<groups>. Defaults to all
(and is currently rather pointless as only I<groups> has been
implemented).

=item B<-c>, B<--checkgroups> I<filename>

Check each group against a list of valid newsgroups read from
I<filename>, one group on each line and ignoring everything after the
first whitespace (so you can use a file in checkgroups format or (part
of) your INN active file).

Newsgroups not found in I<filename> will be dropped (and logged to
STDERR), and newsgroups found in I<filename> but having no postings
will be added with a count of 0 (and logged to STDERR).

=item B<--hierarchy> I<TLH> (newsgroup hierarchy)

Override I<TLH> from F<newsstats.conf>.

=item B<--rawdb> I<table> (raw data table)

Override I<DBTableRaw> from F<newsstats.conf>.

=item B<--groupsdb> I<table> (postings per group table)

Override I<DBTableGrps> from F<newsstats.conf>.

=item B<--clientsdb> I<table> (client data table)

Override I<DBTableClnts> from F<newsstats.conf>.

=item B<--hostsdb> I<table> (host data table)

Override I<DBTableHosts> from F<newsstats.conf>.

=back

=head1 INSTALLATION

See L<doc/INSTALL>.

=head1 EXAMPLES

Process all types of information for lasth month:

    gatherstats

Do a dry run, showing results of processing:

    gatherstats --debug --test

Process all types of information for January of 2010:

    gatherstats --month 2010-01

Process only number of postings for the year of 2010,
checking against checkgroups-2010.txt:

    gatherstats -m 2010-01:2010-12 -s groups -c checkgroups-2010.txt

=head1 FILES

=over 4

=item F<gatherstats.pl>

The script itself.

=item F<NewsStats.pm>

Library functions for the NewsStats package.

=item F<newsstats.conf>

Runtime configuration file.

=back

=head1 BUGS

Please report any bugs or feature requests to the author or use the
bug tracker at L<http://bugs.th-h.de/>!

=head1 SEE ALSO

=over 2

=item -

L<doc/README>

=item -

L<doc/INSTALL>

=back

This script is part of the B<NewsStats> package.

=head1 AUTHOR

Thomas Hochstein <thh@inter.net>

=head1 COPYRIGHT AND LICENSE

Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>

This program is free software; you may redistribute it and/or modify it
under the same terms as Perl itself.

=cut
Commit	Line	Data
	1	#! /usr/bin/perl -W
	2	#
	3	# gatherstats.pl
	4	#
	5	# This script will gather statistical information from a database
	6	# containing headers and other information from a INN feed.
	7	#
	8	# It is part of the NewsStats package.
	9	#
	10	# Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
	11	#
	12	# It can be redistributed and/or modified under the same terms under
	13	# which Perl itself is published.
	14
	15	BEGIN {
	16	our $VERSION = "0.01";
	17	use File::Basename;
	18	push(@INC, dirname($0));
	19	}
	20	use strict;
	21
	22	use NewsStats qw(:DEFAULT :TimePeriods ListNewsgroups ReadGroupList);
	23
	24	use DBI;
	25	use Getopt::Long qw(GetOptions);
	26	Getopt::Long::config ('bundling');
	27
	28	################################# Definitions ##################################
	29
	30	# define types of information that can be gathered
	31	# all / groups (/ clients / hosts)
	32	my %LegalStats;
	33	@LegalStats{('all','groups')} = ();
	34
	35	################################# Main program #################################
	36
	37	### read commandline options
	38	my ($OptCheckgroupsFile,$OptClientsDB,$OptDebug,$OptGroupsDB,$OptTLH,
	39	$OptHostsDB,$OptMonth,$OptRawDB,$OptStatsType,$OptTest);
	40	GetOptions ('c\|checkgroups=s' => \$OptCheckgroupsFile,
	41	'clientsdb=s' => \$OptClientsDB,
	42	'd\|debug!' => \$OptDebug,
	43	'groupsdb=s' => \$OptGroupsDB,
	44	'hierarchy=s' => \$OptTLH,
	45	'hostsdb=s' => \$OptHostsDB,
	46	'm\|month=s' => \$OptMonth,
	47	'rawdb=s' => \$OptRawDB,
	48	's\|stats=s' => \$OptStatsType,
	49	't\|test!' => \$OptTest,
	50	'h\|help' => \&ShowPOD,
	51	'V\|version' => \&ShowVersion) or exit 1;
	52
	53	### read configuration
	54	my %Conf = %{ReadConfig($HomePath.'/newsstats.conf')};
	55
	56	### override configuration via commandline options
	57	my %ConfOverride;
	58	$ConfOverride{'DBTableRaw'} = $OptRawDB if $OptRawDB;
	59	$ConfOverride{'DBTableGrps'} = $OptGroupsDB if $OptGroupsDB;
	60	$ConfOverride{'DBTableClnts'} = $OptClientsDB if $OptClientsDB;
	61	$ConfOverride{'DBTableHosts'} = $OptHostsDB if $OptHostsDB;
	62	$ConfOverride{'TLH'} = $OptTLH if $OptTLH;
	63	&OverrideConfig(\%Conf,\%ConfOverride);
	64
	65	### get type of information to gather, defaulting to 'all'
	66	$OptStatsType = 'all' if !$OptStatsType;
	67	&Bleat(2, sprintf("Unknown type '%s'!", $OptStatsType))
	68	if !exists($LegalStats{$OptStatsType});
	69
	70	### get time period from --month
	71	# get verbal description of time period, drop SQL code
	72	my ($Period) = &GetTimePeriod($OptMonth);
	73	&Bleat(2,"--month option has an invalid format - please use 'YYYY-MM' or ".
	74	"'YYYY-MM:YYYY-MM'!") if (!$Period or $Period eq 'all time');
	75
	76	### reformat $Conf{'TLH'}
	77	my $TLH;
	78	if ($Conf{'TLH'}) {
	79	# $Conf{'TLH'} is parsed as an array by Config::Auto;
	80	# make a flat list again, separated by :
	81	if (ref($Conf{'TLH'}) eq 'ARRAY') {
	82	$TLH = join(':',@{$Conf{'TLH'}});
	83	} else {
	84	$TLH = $Conf{'TLH'};
	85	}
	86	# strip whitespace
	87	$TLH =~ s/\s//g;
	88	# add trailing dots if none are present yet
	89	# (using negative look-behind assertions)
	90	$TLH =~ s/(?<!\.):/.:/g;
	91	$TLH =~ s/(?<!\.)$/./;
	92	# check for illegal characters
	93	&Bleat(2,'Config error - illegal characters in TLH definition!')
	94	if ($TLH !~ /^[a-zA-Z0-9:+.-]+$/);
	95	# escape dots
	96	$TLH =~ s/\./\\./g;
	97	if ($TLH =~ /:/) {
	98	# reformat $TLH from a:b to (a)\|(b),
	99	# e.g. replace ':' by ')\|('
	100	$TLH =~ s/:/)\|(/g;
	101	$TLH = '(' . $TLH . ')';
	102	};
	103	};
	104
	105	# read list of newsgroups from --checkgroups
	106	# into a hash
	107	my %ValidGroups = %{ReadGroupList($OptCheckgroupsFile)} if $OptCheckgroupsFile;
	108
	109	### init database
	110	my $DBHandle = InitDB(\%Conf,1);
	111
	112	### get data for each month
	113	&Bleat(1,'Test mode. Database is not updated.') if $OptTest;
	114	foreach my $Month (&ListMonth($Period)) {
	115
	116	print "---------- $Month ----------\n" if $OptDebug;
	117
	118	if ($OptStatsType eq 'all' or $OptStatsType eq 'groups') {
	119	### ----------------------------------------------
	120	### get groups data (number of postings per group)
	121	# get groups data from raw table for given month
	122	my $DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroups FROM %s.%s ".
	123	"WHERE day LIKE ? AND NOT disregard",
	124	$Conf{'DBDatabase'},
	125	$Conf{'DBTableRaw'}));
	126	$DBQuery->execute($Month.'-%')
	127	or &Bleat(2,sprintf("Can't get groups data for %s from %s.%s: ".
	128	"$DBI::errstr\n",$Month,
	129	$Conf{'DBDatabase'},$Conf{'DBTableRaw'}));
	130
	131	# count postings per group
	132	my %Postings;
	133	while (($_) = $DBQuery->fetchrow_array) {
	134	# get list oft newsgroups and hierarchies from Newsgroups:
	135	my %Newsgroups = ListNewsgroups($_,$TLH,
	136	$OptCheckgroupsFile ? \%ValidGroups : '');
	137	# count each newsgroup and hierarchy once
	138	foreach (sort keys %Newsgroups) {
	139	$Postings{$_}++;
	140	};
	141	};
	142
	143	# add valid but empty groups if --checkgroups is set
	144	if (%ValidGroups) {
	145	foreach (sort keys %ValidGroups) {
	146	if (!defined($Postings{$_})) {
	147	$Postings{$_} = 0 ;
	148	warn (sprintf("ADDED: %s as empty group\n",$_));
	149	}
	150	};
	151	};
	152
	153	# delete old data for that month
	154	if (!$OptTest) {
	155	$DBQuery = $DBHandle->do(sprintf("DELETE FROM %s.%s WHERE month = ?",
	156	$Conf{'DBDatabase'},$Conf{'DBTableGrps'}),
	157	undef,$Month)
	158	or &Bleat(2,sprintf("Can't delete old groups data for %s from %s.%s: ".
	159	"$DBI::errstr\n",$Month,
	160	$Conf{'DBDatabase'},$Conf{'DBTableGrps'}));
	161	};
	162
	163	print "----- GroupStats -----\n" if $OptDebug;
	164	foreach my $Newsgroup (sort keys %Postings) {
	165	print "$Newsgroup => $Postings{$Newsgroup}\n" if $OptDebug;
	166	if (!$OptTest) {
	167	# write to database
	168	$DBQuery = $DBHandle->prepare(sprintf("INSERT INTO %s.%s ".
	169	"(month,newsgroup,postings) ".
	170	"VALUES (?, ?, ?)",
	171	$Conf{'DBDatabase'},
	172	$Conf{'DBTableGrps'}));
	173	$DBQuery->execute($Month, $Newsgroup, $Postings{$Newsgroup})
	174	or &Bleat(2,sprintf("Can't write groups data for %s/%s to %s.%s: ".
	175	"$DBI::errstr\n",$Month,$Newsgroup,
	176	$Conf{'DBDatabase'},$Conf{'DBTableGrps'}));
	177	$DBQuery->finish;
	178	};
	179	};
	180	} else {
	181	# other types of information go here - later on
	182	};
	183	};
	184
	185	### close handles
	186	$DBHandle->disconnect;
	187
	188	__END__
	189
	190	################################ Documentation #################################
	191
	192	=head1 NAME
	193
	194	gatherstats - process statistical data from a raw source
	195
	196	=head1 SYNOPSIS
	197
	198	B<gatherstats> [B<-Vhdt>] [B<-m> I<YYYY-MM> \| I<YYYY-MM:YYYY-MM>] [B<-s> I<stats] [B<-c> I<checkgroups file>]] [B<--hierarchy> I<TLH>] [B<--rawdb> I<database table>] [B<-groupsdb> I<database table>] [B<--clientsdb> I<database table>] [B<--hostsdb> I<database table>]
	199
	200	=head1 REQUIREMENTS
	201
	202	See L<doc/README>.
	203
	204	=head1 DESCRIPTION
	205
	206	This script will extract and process statistical information from a
	207	database table which is fed from F<feedlog.pl> for a given time period
	208	and write its results to (an)other database table(s). Entries marked
	209	with I<'disregard'> in the database will be ignored; currently, you
	210	have to set this flag yourself, using your database management tools.
	211	You can exclude erroneous entries that way (e.g. automatic reposts
	212	(think of cancels flood and resurrectors); spam; ...).
	213
	214	The time period to act on defaults to last month; you can assign
	215	another time period or a single month via the B<--month> option (see
	216	below).
	217
	218	By default B<gatherstats> will process all types of information; you
	219	can change that using the B<--stats> option and assigning the type of
	220	information to process. Currently that doesn't matter yet as only
	221	processing of the number of postings per group per month is
	222	implemented anyway.
	223
	224	Possible information types include:
	225
	226	=over 3
	227
	228	=item B<groups> (postings per group per month)
	229
	230	B<gatherstats> will examine Newsgroups: headers. Crosspostings will be
	231	counted for each single group they appear in. Groups not in I<TLH>
	232	will be ignored.
	233
	234	B<gatherstats> will also add up the number of postings for each
	235	hierarchy level, but only count each posting once. A posting to
	236	de.alt.test will be counted for de.alt.test, de.alt.ALL and de.ALL,
	237	respectively. A crossposting to de.alt.test and de.alt.admin, on the
	238	other hand, will be counted for de.alt.test and de.alt.admin each, but
	239	only once for de.alt.ALL and de.ALL.
	240
	241	Data is written to I<DBTableGrps> (see L<doc/INSTALL>); you can
	242	override that default through the B<--groupsdb> option.
	243
	244	=back
	245
	246	=head2 Configuration
	247
	248	B<gatherstats> will read its configuration from F<newsstats.conf>
	249	which should be present in the same directory via Config::Auto.
	250
	251	See L<doc/INSTALL> for an overview of possible configuration options.
	252
	253	You can override configuration options via the B<--hierarchy>,
	254	B<--rawdb>, B<--groupsdb>, B<--clientsdb> and B<--hostsdb> options,
	255	respectively.
	256
	257	=head1 OPTIONS
	258
	259	=over 3
	260
	261	=item B<-V>, B<--version>
	262
	263	Print out version and copyright information and exit.
	264
	265	=item B<-h>, B<--help>
	266
	267	Print this man page and exit.
	268
	269	=item B<-d>, B<--debug>
	270
	271	Output debugging information to STDOUT while processing (number of
	272	postings per group).
	273
	274	=item B<-t>, B<--test>
	275
	276	Do not write results to database. You should use B<--debug> in
	277	conjunction with B<--test> ... everything else seems a bit pointless.
	278
	279	=item B<-m>, B<--month> I<YYYY-MM[:YYYY-MM]>
	280
	281	Set processing period to a single month in YYYY-MM format or to a time
	282	period between two month in YYYY-MM:YYYY-MM format (two month, separated
	283	by a colon).
	284
	285
	286	=item B<-s>, B<--stats> I<type>
	287
	288	Set processing type to one of I<all> and I<groups>. Defaults to all
	289	(and is currently rather pointless as only I<groups> has been
	290	implemented).
	291
	292	=item B<-c>, B<--checkgroups> I<filename>
	293
	294	Check each group against a list of valid newsgroups read from
	295	I<filename>, one group on each line and ignoring everything after the
	296	first whitespace (so you can use a file in checkgroups format or (part
	297	of) your INN active file).
	298
	299	Newsgroups not found in I<filename> will be dropped (and logged to
	300	STDERR), and newsgroups found in I<filename> but having no postings
	301	will be added with a count of 0 (and logged to STDERR).
	302
	303	=item B<--hierarchy> I<TLH> (newsgroup hierarchy)
	304
	305	Override I<TLH> from F<newsstats.conf>.
	306
	307	=item B<--rawdb> I<table> (raw data table)
	308
	309	Override I<DBTableRaw> from F<newsstats.conf>.
	310
	311	=item B<--groupsdb> I<table> (postings per group table)
	312
	313	Override I<DBTableGrps> from F<newsstats.conf>.
	314
	315	=item B<--clientsdb> I<table> (client data table)
	316
	317	Override I<DBTableClnts> from F<newsstats.conf>.
	318
	319	=item B<--hostsdb> I<table> (host data table)
	320
	321	Override I<DBTableHosts> from F<newsstats.conf>.
	322
	323	=back
	324
	325	=head1 INSTALLATION
	326
	327	See L<doc/INSTALL>.
	328
	329	=head1 EXAMPLES
	330
	331	Process all types of information for lasth month:
	332
	333	gatherstats
	334
	335	Do a dry run, showing results of processing:
	336
	337	gatherstats --debug --test
	338
	339	Process all types of information for January of 2010:
	340
	341	gatherstats --month 2010-01
	342
	343	Process only number of postings for the year of 2010,
	344	checking against checkgroups-2010.txt:
	345
	346	gatherstats -m 2010-01:2010-12 -s groups -c checkgroups-2010.txt
	347
	348	=head1 FILES
	349
	350	=over 4
	351
	352	=item F<gatherstats.pl>
	353
	354	The script itself.
	355
	356	=item F<NewsStats.pm>
	357
	358	Library functions for the NewsStats package.
	359
	360	=item F<newsstats.conf>
	361
	362	Runtime configuration file.
	363
	364	=back
	365
	366	=head1 BUGS
	367
	368	Please report any bugs or feature requests to the author or use the
	369	bug tracker at L<http://bugs.th-h.de/>!
	370
	371	=head1 SEE ALSO
	372
	373	=over 2
	374
	375	=item -
	376
	377	L<doc/README>
	378
	379	=item -
	380
	381	L<doc/INSTALL>
	382
	383	=back
	384
	385	This script is part of the B<NewsStats> package.
	386
	387	=head1 AUTHOR
	388
	389	Thomas Hochstein <thh@inter.net>
	390
	391	=head1 COPYRIGHT AND LICENSE
	392
	393	Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
	394
	395	This program is free software; you may redistribute it and/or modify it
	396	under the same terms as Perl itself.
	397
	398	=cut