b802bc3d29
Do the work in the application, using two separate SQL queries, instead of trying to optimize the single query in vain ... Thanks to Juliane. :) Fixes #16. Signed-off-by: Thomas Hochstein <thh@inter.net>
487 lines
16 KiB
Perl
Executable file
487 lines
16 KiB
Perl
Executable file
#! /usr/bin/perl -W
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#
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# groupstats.pl
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#
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# This script will get statistical data on newgroup usage
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# form a database.
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#
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# It is part of the NewsStats package.
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#
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# Copyright (c) 2010 Thomas Hochstein <thh@inter.net>
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#
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# It can be redistributed and/or modified under the same terms under
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# which Perl itself is published.
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BEGIN {
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our $VERSION = "0.01";
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use File::Basename;
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push(@INC, dirname($0));
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}
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use strict;
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use NewsStats qw(:DEFAULT :TimePeriods :Output :SQLHelper);
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use DBI;
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################################# Main program #################################
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### read commandline options
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my %Options = &ReadOptions('m:p:n:o:t:l:b:iscqdg:');
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### read configuration
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my %Conf = %{ReadConfig('newsstats.conf')};
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### override configuration via commandline options
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my %ConfOverride;
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$ConfOverride{'DBTableGrps'} = $Options{'g'} if $Options{'g'};
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&OverrideConfig(\%Conf,\%ConfOverride);
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### check for incompatible command line options
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# you can't mix '-t', '-b' and '-l'
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# -b/-l take preference over -t, and -b takes preference over -l
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if ($Options{'b'} or $Options{'l'}) {
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if ($Options{'t'}) {
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# drop -t
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warn ("$MySelf: W: You cannot combine thresholds (-t) and top lists (-b) or levels (-l). Threshold '-t $Options{'t'}' was ignored.\n");
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undef($Options{'t'});
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};
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if ($Options{'b'} and $Options{'l'}) {
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# drop -l
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warn ("$MySelf: W: You cannot combine top lists (-b) and levels (-l). Level '-l $Options{'l'}' was ignored.\n");
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undef($Options{'l'});
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};
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# -q/-d don't work with -b or -l
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warn ("$MySelf: W: Sorting by number of postings (-q) ignored due to top list mode (-b) / levels (-l).\n") if $Options{'q'};
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warn ("$MySelf: W: Reverse sorting (-d) ignored due to top list mode (-b) / levels (-l).\n") if $Options{'d'};
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};
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### check output type
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# default output type to 'dump'
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$Options{'o'} = 'dump' if !$Options{'o'};
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# fail if more than one newsgroup is combined with 'dumpgroup' type
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die ("$MySelf: E: You cannot combine newsgroup lists (-n) with more than one group with '-o dumpgroup'!\n") if ($Options{'o'} eq 'dumpgroup' and defined($Options{'n'}) and $Options{'n'} =~ /:|\*/);
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# accept 'dumpgroup' only with -n
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if ($Options{'o'} eq 'dumpgroup' and !defined($Options{'n'})) {
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$Options{'o'} = 'dump';
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warn ("$MySelf: W: You must submit exactly one newsgroup ('-n news.group') for '-o dumpgroup'. Output type was set to 'dump'.\n");
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};
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# set output type to 'pretty' for -l
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if ($Options{'l'}) {
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$Options{'o'} = 'pretty';
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warn ("$MySelf: W: Output type forced to '-o pretty' due to usage of '-l'.\n");
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};
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### get time period
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my ($StartMonth,$EndMonth) = &GetTimePeriod($Options{'m'},$Options{'p'});
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# reset to one month for 'dump' output type
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if ($Options{'o'} eq 'dump' and $Options{'p'}) {
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warn ("$MySelf: W: You cannot combine time periods (-p) with '-o dump', changing output type to '-o pretty'.\n");
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$Options{'o'} = 'pretty';
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};
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### init database
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my $DBHandle = InitDB(\%Conf,1);
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### create report
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# get list of newsgroups (-n)
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my ($QueryGroupList,$QueryThreshold,@GroupList,@Params);
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my $Newsgroups = $Options{'n'};
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if ($Newsgroups) {
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# explode list of newsgroups for WHERE clause
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($QueryGroupList,@GroupList) = &SQLGroupList($Newsgroups);
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} else {
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# set to dummy value (always true)
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$QueryGroupList = 1;
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};
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# manage thresholds
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if (defined($Options{'t'})) {
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if ($Options{'i'}) {
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# -i: list groups below threshold
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$QueryThreshold .= ' postings < ?';
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} else {
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# default: list groups above threshold
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$QueryThreshold .= ' postings > ?';
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};
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# push threshold to Params
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push @Params,$Options{'t'};
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} else {
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# set to dummy value (always true)
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$QueryThreshold = 1;
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}
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# construct WHERE clause
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# $QueryGroupList is "list of newsgroup" (or 1),
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# $QueryThreshold is threshold definition (or 1),
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# &SQLHierarchies() takes care of the exclusion of hierarchy levels (.ALL)
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# according to setting of -s
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my $WhereClause = sprintf('month BETWEEN ? AND ? AND %s AND %s %s',$QueryGroupList,$QueryThreshold,&SQLHierarchies($Options{'s'}));
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# get length of longest newsgroup delivered by query for formatting purposes
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# FIXME
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my $MaxLength = &GetMaxLenght($DBHandle,$Conf{'DBTableGrps'},'newsgroup',$WhereClause,$StartMonth,$EndMonth,(@GroupList,@Params));
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my ($OrderClause,$DBQuery);
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# -b (best of / top list) defined?
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if (!defined($Options{'b'}) and !defined($Options{'l'})) {
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# default: neither -b nor -l
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# set ordering (ORDER BY) to "newsgroups" or "postings", "ASC" or "DESC"
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# according to -q and -d
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$OrderClause = 'newsgroup';
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$OrderClause = 'postings' if $Options{'q'};
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$OrderClause .= ' DESC' if $Options{'d'};
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# prepare query: get number of postings per group from groups table for given months and newsgroups
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$DBQuery = $DBHandle->prepare(sprintf("SELECT month,newsgroup,postings FROM %s.%s WHERE %s ORDER BY month,%s",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause));
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} elsif ($Options{'b'}) {
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# -b is set (then -l can't be!)
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# set sorting order (-i): top or flop list?
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if ($Options{'i'}) {
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$OrderClause = 'postings';
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} else {
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$OrderClause = 'postings DESC';
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};
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# set -b to 10 if < 1 (Top 10)
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$Options{'b'} = 10 if $Options{'b'} !~ /^\d*$/ or $Options{'b'} < 1;
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# push LIMIT to Params
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push @Params,$Options{'b'};
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# prepare query: get sum of postings per group from groups table for given months and newsgroups with LIMIT
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$DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroup,SUM(postings) AS postings FROM %s.%s WHERE %s GROUP BY newsgroup ORDER BY %s,newsgroup LIMIT ?",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause));
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} else {
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# -l must be set now, as all other cases have been taken care of
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# which kind of level (-i): more than -l x or less than -l x?
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my ($Level);
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if ($Options{'i'}) {
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$Level = '<';
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} else {
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$Level = '>';
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};
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# prepare and execute query: get list of newsgroups meeting level condition
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$DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroup FROM %s.%s WHERE %s GROUP BY newsgroup HAVING MAX(postings) %s ?",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$Level));
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$DBQuery->execute($StartMonth,$EndMonth,@GroupList,$Options{'l'})
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or die sprintf("$MySelf: E: Can't get groups data for %s to %s from %s.%s: %s\n",$StartMonth,$EndMonth,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$DBI::errstr);
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# add newsgroups to a comma-seperated list ready for IN(...) query
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my $GroupList;
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while (my ($Newsgroup) = $DBQuery->fetchrow_array) {
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$GroupList .= ',' if (defined($GroupList) and $GroupList ne '');
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$GroupList .= "'$Newsgroup'";
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};
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$DBQuery = $DBHandle->prepare(sprintf("SELECT month,newsgroup,postings FROM %s.%s WHERE newsgroup IN (%s) AND %s ORDER BY newsgroup,month",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$GroupList,$WhereClause));
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};
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# execute query
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$DBQuery->execute($StartMonth,$EndMonth,@GroupList,@Params)
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or die sprintf("$MySelf: E: Can't get groups data for %s to %s from %s.%s: %s\n",$StartMonth,$EndMonth,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$DBI::errstr);
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# output results
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# print caption (-c) with time period if -m or -p is set
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# FIXME - month or period should handled differently
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printf ("----- Report from %s to %s\n",$StartMonth,$EndMonth) if $Options{'c'} and ($Options{'m'} or $Options{'p'});
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# print caption (-c) with newsgroup list if -n is set
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printf ("----- Newsgroups: %s\n",join(',',split(/:/,$Newsgroups))) if $Options{'c'} and $Options{'n'};
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# print caption (-c) with threshold if -t is set, taking -i in account
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printf ("----- Threshold: %s %u\n",$Options{'i'} ? '<' : '>',$Options{'t'}) if $Options{'c'} and $Options{'t'};
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if (!defined($Options{'b'}) and !defined($Options{'l'})) {
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# default: neither -b nor -l
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&OutputData($Options{'o'},$DBQuery,$MaxLength);
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} elsif ($Options{'b'}) {
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# -b is set (then -l can't be!)
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# we have to read in the query results ourselves, as they do not have standard layout
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while (my ($Newsgroup,$Postings) = $DBQuery->fetchrow_array) {
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# we just assign "top x" or "bottom x" instead of a month for the caption
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# FIXME
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print &FormatOutput($Options{'o'}, ($Options{'i'} ? 'Bottom ' : 'Top ').$Options{'b'}, $Newsgroup, $Postings, $MaxLength);
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};
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} else {
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# -l must be set now, as all other cases have been taken care of
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# we have to read in the query results ourselves, as they do not have standard layout
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while (my ($Month,$Newsgroup,$Postings) = $DBQuery->fetchrow_array) {
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# we just switch $Newsgroups and $Month for output generation
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# FIXME
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print &FormatOutput($Options{'o'}, $Newsgroup, $Month, $Postings, 7);
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};
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};
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### close handles
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$DBHandle->disconnect;
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__END__
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################################ Documentation #################################
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=head1 NAME
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groupstats - create reports on newsgroup usage
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=head1 SYNOPSIS
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B<groupstats> [B<-Vhiscqd>] [B<-m> I<YYYY-MM>] [B<-p> I<YYYY-MM:YYYY-MM>] [B<-n> I<newsgroup(s)>] [B<-t> I<threshold>] [B<-l> I<level>] [B<-b> I<number>] [B<-o> I<output type>] [B<-g> I<database table>]
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=head1 REQUIREMENTS
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See doc/README: Perl 5.8.x itself and the following modules from CPAN:
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=over 2
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=item -
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Config::Auto
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=item -
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DBI
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=back
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=head1 DESCRIPTION
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This script create reports on newsgroup usage (number of postings per
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group per month) taken from result tables created by
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F<gatherstats.pl>.
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The time period to act on defaults to last month; you can assign
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another month via the B<-m> switch or a time period via the B<-p>
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switch; the latter takes preference.
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B<groupstats> will process all newsgroups by default; you can limit
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that to only some newsgroups by supplying a list of those groups via
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B<-n> (see below). You can include hierarchy levels in the output by
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adding the B<-s> switch (see below).
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Furthermore you can set a threshold via B<-t> so that only newsgroups
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with more postings per month will be included in the report. You can
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invert that by the B<-i> switch so only newsgroups with less than
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I<threshold> postings per month will be included.
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You can sort the output by number of postings per month instead of the
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default (alphabetical list of newsgroups) by using B<-q>; you can
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reverse the sorting order (from highest to lowest or in reversed
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alphabetical order) by using B<-d>.
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Furthermore, you can create a list of newsgroups that had consistently
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more (or less) than x postings per month during the whole report
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period by using B<-l> (together with B<i> as needed).
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Last but not least you can create a "best of" list of the top x
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newsgroups via B<-b> (or a "worst of" list by adding B<i>).
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By default, B<groupstats> will dump a very simple alphabetical list of
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newsgroups, one per line, followed by the number of postings in that
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month. This output format of course cannot sensibly be combined with
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time periods, so you can set the output format by using B<-o> (see
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below). Captions can be added by setting the B<-c> switch.
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=head2 Configuration
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F<groupstats.pl> will read its configuration from F<newsstats.conf>
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which should be present in the same directory via Config::Auto.
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See doc/INSTALL for an overview of possible configuration options.
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You can override configuration options via the B<-g> switch.
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=head1 OPTIONS
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=over 3
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=item B<-V> (version)
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Print out version and copyright information on B<yapfaq> and exit.
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=item B<-h> (help)
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Print this man page and exit.
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=item B<-m> I<YYYY-MM> (month)
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Set processing period to a month in YYYY-MM format. Ignored if B<-p>
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is set.
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=item B<-p> I<YYYY-MM:YYYY-MM> (period)
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Set processing period to a time period between two month, each in
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YYYY-MM format, separated by a colon. Overrides B<-m>.
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=item B<-n> I<newsgroup(s)> (newsgroups)
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Limit processing to a certain set of newsgroups. I<newsgroup(s)> can
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be a single newsgroup name (de.alt.test), a newsgroup hierarchy
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(de.alt.*) or a list of either of these, separated by colons, for
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example
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de.test:de.alt.test:de.newusers.*
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=item B<-t> I<threshold> (threshold)
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Only include newsgroups with more than I<threshold> postings per
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month. Can be inverted by the B<-i> switch so that only newsgroups
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with less than I<threshold> postings will be included.
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This setting will be ignored if B<-l> or B<-b> is set.
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=item B<-l> I<level> (level)
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Only include newsgroups with more than I<level> postings per
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month, every month during the whole reporting period. Can be inverted
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by the B<-i> switch so that only newsgroups with less than I<level>
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postings every single month will be included. Output will be ordered
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by newsgroup name, followed by month.
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This setting will be ignored if B<-b> is set. Overrides B<-t> and
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can't be used together with B<-q> or B<-d>.
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=item B<-b> I<n> (best of)
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Create a list of the I<n> newsgroups with the most postings over the
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whole reporting period. Can be inverted by the B<-i> switch so that a
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list of the I<n> newsgroups with the least postings over the whole
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period is generated. Output will be ordered by sum of postings.
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Overrides B<-t> and B<-l> and can't be used together with B<-q> or
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B<-d>. Output format is set to I<pretty> (see below).
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=item B<-i> (invert)
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Used in conjunction with B<-t>, B<-l> or B<-b> to set a lower
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threshold or level or generate a "bottom list" instead of a top list.
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=item B<-s> (sum per hierarchy level)
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Include "virtual" groups for every hierarchy level in output, for
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example:
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de.alt.ALL 10
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de.alt.test 5
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de.alt.admin 7
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See the B<gatherstats> man page for details.
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=item B<-o> I<output type> (output format)
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Set output format. Default is I<dump>, consisting of an alphabetical
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list of newsgroups, each on a new line, followed by the number of
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postings in that month. This default format can't be used with time
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periods of more than one month.
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I<list> format is like I<dump>, but will print the month in front of
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the newsgroup name.
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I<dumpgroup> format can only be use with a group list (see B<-n>) of
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exactly one newsgroup and is like I<dump>, but will output months,
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followed by the number of postings.
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If you don't need easily parsable output, you'll mostly use I<pretty>
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format, which will print a header for each new month and try to align
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newsgroup names and posting counts. Usage of B<-b> will force this
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format.
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=item B<-c> (captions)
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Add captions to output (reporting period, newsgroups list, threshold).
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=item B<-q> (quantity of postings)
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Sort by number of postings instead of by newsgroup names.
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Cannot be used with B<-l> or B<-b>.
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=item B<-d> (descending)
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Change sort order to descending.
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Cannot be used with B<-l> or B<-b>.
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=item B<-g> I<table> (postings per group table)
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Override I<DBTableGrps> from F<newsstats.conf>.
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=back
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=head1 INSTALLATION
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See doc/INSTALL.
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=head1 EXAMPLES
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Show number of postings per group for lasth month in I<dump> format:
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groupstats
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Show that report for January of 2010 and de.alt.* plus de.test,
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including display of hierarchy levels:
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groupstats -m 2010-01 -n de.alt.*:de.test -s
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Show that report for the year of 2010 in I<pretty> format:
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groupstats -p 2010-01:2010-12 -o pretty
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Only show newsgroups with less than 30 postings last month, ordered
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by number of postings, descending, in I<pretty> format:
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groupstats -iqdt 30 -o pretty
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Show top 10 for the first half-year of of 2010 in I<pretty> format:
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groupstats -p 2010-01:2010-06 -b 10 -o pretty
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Report all groups that had less than 30 postings every singele month
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in the year of 2010 (I<pretty> format is forced)
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groupstats -p 2010-01:2010-12 -il 30
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=head1 FILES
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=over 4
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=item F<groupstats.pl>
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The script itself.
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=item F<NewsStats.pm>
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Library functions for the NewsStats package.
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=item F<newsstats.conf>
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Runtime configuration file for B<yapfaq>.
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=back
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=head1 BUGS
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Please report any bugs or feature requests to the author or use the
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bug tracker at L<http://bugs.th-h.de/>!
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=head1 SEE ALSO
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=over 2
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=item -
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doc/README
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=item -
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doc/INSTALL
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=item -
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gatherstats -h
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=back
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This script is part of the B<NewsStats> package.
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=head1 AUTHOR
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Thomas Hochstein <thh@inter.net>
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=head1 COPYRIGHT AND LICENSE
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Copyright (c) 2010 Thomas Hochstein <thh@inter.net>
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This program is free software; you may redistribute it and/or modify it
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under the same terms as Perl itself.
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=cut
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