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‎README

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pPostgreSQL Database Management System
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PostgreSQL Database Management System
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=====================================
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This directory contains the source code distribution of the PostgreSQL

‎contrib/mmts/testeaux/Combineaux.pm

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package Combineaux;
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use Troubleaux;
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use Stresseaux;
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use Starteaux;
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sub combine
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{
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my ($stresses, $troubles) = @_;
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my $cluster = Starteaux->deploy('lxc');
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foreach my $stress (@$stresses)
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{
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foreach my $trouble (@$troubles)
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{
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print("--- $stress vs. $trouble ---\n");
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my $id = "$stress+$trouble";
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Stresseaux::start($id, $stress, $cluster) || die "stress wouldn't start";
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sleep(1); # FIXME: will this work?
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Troubleaux::cause($cluster, $trouble);
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sleep(1); # FIXME: will this work?
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Stresseaux::stop($id) || die "stress wouldn't stop";
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Troubleaux::fix($cluster);
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}
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}
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$cluster->destroy();
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}
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1;

‎contrib/mmts/testeaux/Starteaux.pm

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package Starteaux;
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sub deploy
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{
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my ($class, $driver, @args) = @_;
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my $self = {};
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print("deploy cluster using driver $driver\n");
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# fixme: implement
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return bless $self, 'Starteaux';
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}
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sub up
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{
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my ($self, $id) = @_;
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print("up node $id\n");
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# FIXME: implement
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}
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sub down
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{
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my ($self, $id) = @_;
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print("down node $id\n");
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# FIXME: implement
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}
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sub drop
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{
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my ($self, $src, $dst, $ratio) = @_;
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print("drop $ratio packets from $src to $dst\n");
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# FIXME: implement
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}
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sub delay
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{
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my ($self, $src, $dst, $msec) = @_;
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print("delay packets from $src to $dst by $msec msec\n");
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# FIXME: implement
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}
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sub destroy
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{
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my ($self) = @_;
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print("destroy cluster $cluster\n");
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# FIXME: implement
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}
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1;

‎contrib/mmts/testeaux/Stresseaux.pm

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package Stresseaux;
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my %running = ();
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sub start
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{
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my ($id, $stressname, $cluster, @args) = @_;
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if (exists $running{$id})
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{
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print("cannot start stress $stressname as $id: that id has already been taken\n");
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return 0;
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}
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require "stress/$stressname.pm";
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$running{$id} = "stress::$stressname"->start($id, $cluster, @args);
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return 1;
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}
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sub stop
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{
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my $id = shift;
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my $stress = delete $running{$id};
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if (!defined $stress)
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{
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print("cannot stop stress $id: that id is not running\n");
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return 0;
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}
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$stress->stop();
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return 1;
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}
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1;

‎contrib/mmts/testeaux/Testeaux.pm

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This file was deleted.

‎contrib/mmts/testeaux/Troubleaux.pm

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my @caused = ();
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package Troubleaux
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{
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sub cause
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{
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my $cluster = shift;
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my $troublename = shift;
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my @args = @_;
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require "trouble/$troublename.pm";
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push @caused, "trouble::$troublename"->cause(@args);
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}
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sub fix
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{
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my ($cluster) = @_;
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while (@caused)
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{
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my $trouble = pop @caused;
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$trouble->fix();
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}
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}
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}
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1;

‎contrib/mmts/testeaux/eaux.pl

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#!/usr/bin/perl
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use Testeaux;
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use Combineaux;
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Combineaux::combine(
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['bank-transfers', 'pgbench-default'],
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['split-brain', 'time-shift'],
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)
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sub list_modules
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{
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my $dir = shift;
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my @modules = ();
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opendir DIR, $dir or die "Cannot open directory: $!";
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while (my $file = readdir(DIR)) {
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# Use a regular expression to ignore files beginning with a period
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next unless ($file =~ m/\.pm$/);
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push @modules, substr($file, 0, -3);
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}
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closedir DIR;
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return @modules;
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}
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my @stresses = list_modules('stress');
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my @troubles = list_modules('trouble');
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Combineaux::combine(\@stresses, \@troubles);

‎contrib/mmts/testeaux/stress/banktransfer.pm

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package stress::banktransfer;
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sub start
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{
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my ($class, @args) = @_;
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my $self = {};
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print("start $class with args " . join(',', @args) . "\n");
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return bless $self, $class;
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}
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sub stop
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{
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my $self = shift;
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print("stop $self\n");
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}
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1;

‎contrib/mmts/testeaux/stress/pgbench.pm

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package stress::pgbench;
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sub start
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{
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my ($class, @args) = @_;
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my $self = {};
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print("start $class with args " . join(',', @args) . "\n");
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return bless $self, $class;
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}
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sub stop
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{
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my $self = shift;
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print("stop $self\n");
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}
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1;

‎contrib/mmts/testeaux/trouble/splitbrain.pm

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package trouble::splitbrain;
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sub cause
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{
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my ($class, @args) = @_;
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my $self = {};
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print("cause $class with args " . join(',', @args) . "\n");
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return bless $self, $class;
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}
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sub fix
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{
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my $self = shift;
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print("fix $self\n");
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}
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1;

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