246 lines
8.6 KiB
Perl
246 lines
8.6 KiB
Perl
package PandoraFMS::PluginServer;
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##########################################################################
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# Pandora FMS Plugin Server.
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# Pandora FMS. the Flexible Monitoring System. http://www.pandorafms.org
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##########################################################################
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# Copyright (c) 2005-2009 Artica Soluciones Tecnologicas S.L
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public License
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# as published by the Free Software Foundation; version 2
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##########################################################################
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use strict;
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use warnings;
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use threads;
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use threads::shared;
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use Thread::Semaphore;
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use POSIX qw(strftime);
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use HTML::Entities;
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use JSON qw(decode_json);
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# Default lib dir for RPM and DEB packages
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use lib '/usr/lib/perl5';
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use PandoraFMS::Tools;
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use PandoraFMS::DB;
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use PandoraFMS::Core;
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use PandoraFMS::ProducerConsumerServer;
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# Inherits from PandoraFMS::ProducerConsumerServer
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our @ISA = qw(PandoraFMS::ProducerConsumerServer);
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# Global variables
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my @TaskQueue :shared;
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my %PendingTasks :shared;
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my $Sem :shared = Thread::Semaphore->new;
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my $TaskSem :shared = Thread::Semaphore->new (0);
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########################################################################################
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# Plugin Server class constructor.
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########################################################################################
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sub new ($$;$) {
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my ($class, $config, $dbh) = @_;
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return undef unless $config->{'pluginserver'} == 1;
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# Check for plugin_exec
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if (! -x $config->{'plugin_exec'}) {
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logger ($config, ' [E] ' . $config->{'plugin_exec'} . ' not found. Plugin Server not started.', 1);
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print_message ($config, ' [E] ' . $config->{'plugin_exec'} . ' not found. Plugin Server not started.', 1);
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return undef;
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}
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# Call the constructor of the parent class
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my $self = $class->SUPER::new($config, 4, \&PandoraFMS::PluginServer::data_producer, \&PandoraFMS::PluginServer::data_consumer, $dbh);
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bless $self, $class;
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return $self;
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}
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###############################################################################
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# Run.
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###############################################################################
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sub run ($) {
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my $self = shift;
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my $pa_config = $self->getConfig ();
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print_message ($pa_config, " [*] Starting Pandora FMS Plugin Server.", 1);
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$self->setNumThreads ($pa_config->{'plugin_threads'});
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$self->SUPER::run (\@TaskQueue, \%PendingTasks, $Sem, $TaskSem);
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}
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###############################################################################
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# Data producer.
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###############################################################################
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sub data_producer ($) {
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my $self = shift;
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my ($pa_config, $dbh) = ($self->getConfig (), $self->getDBH ());
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my @tasks;
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my @rows;
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if ($pa_config->{'pandora_master'} != 1) {
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@rows = get_db_rows ($dbh, 'SELECT tagente_modulo.id_agente_modulo, tagente_modulo.flag, tagente_estado.current_interval + tagente_estado.last_execution_try AS time_left, last_execution_try
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FROM tagente, tagente_modulo, tagente_estado
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WHERE server_name = ?
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AND tagente_modulo.id_agente = tagente.id_agente
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AND tagente.disabled = 0
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AND tagente_modulo.id_plugin != 0
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AND tagente_modulo.disabled = 0
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AND tagente_estado.id_agente_modulo = tagente_modulo.id_agente_modulo
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AND (tagente_modulo.flag = 1 OR (tagente_estado.last_execution_try + tagente_estado.current_interval) < UNIX_TIMESTAMP())
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ORDER BY tagente_modulo.flag DESC, time_left ASC, last_execution_try ASC', $pa_config->{'servername'});
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} else {
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@rows = get_db_rows ($dbh, 'SELECT DISTINCT(tagente_modulo.id_agente_modulo), tagente_modulo.flag, tagente_estado.current_interval + tagente_estado.last_execution_try AS time_left, last_execution_try
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FROM tagente, tagente_modulo, tagente_estado
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WHERE ((server_name = ?) OR (server_name = ANY(SELECT name FROM tserver WHERE status = 0)))
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AND tagente_modulo.id_agente = tagente.id_agente
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AND tagente.disabled = 0
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AND tagente_modulo.disabled = 0
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AND tagente_modulo.id_plugin != 0
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AND tagente_estado.id_agente_modulo = tagente_modulo.id_agente_modulo
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AND (tagente_modulo.flag = 1 OR (tagente_estado.last_execution_try + tagente_estado.current_interval) < UNIX_TIMESTAMP())
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ORDER BY tagente_modulo.flag DESC, time_left ASC, last_execution_try ASC', $pa_config->{'servername'});
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}
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foreach my $row (@rows) {
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# Reset forced execution flag
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if ($row->{'flag'} == 1) {
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db_do ($dbh, 'UPDATE tagente_modulo SET flag = 0 WHERE id_agente_modulo = ?', $row->{'id_agente_modulo'});
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}
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push (@tasks, $row->{'id_agente_modulo'});
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}
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return @tasks;
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}
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###############################################################################
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# Data consumer.
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###############################################################################
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sub data_consumer ($$) {
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my ($self, $module_id) = @_;
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my ($pa_config, $dbh) = ($self->getConfig (), $self->getDBH ());
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# Retrieve module data
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my $module = get_db_single_row ($dbh, 'SELECT * FROM tagente_modulo WHERE id_agente_modulo = ?', $module_id);
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return unless defined $module;
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# Retrieve plugin data
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my $plugin = get_db_single_row ($dbh, 'SELECT * FROM tplugin WHERE id = ?', $module->{'id_plugin'});
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return unless defined $plugin;
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# Use the smallest timeout
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my $timeout = ($plugin->{'max_timeout'} < $pa_config->{'plugin_timeout'}) ?
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$plugin->{'max_timeout'} : $pa_config->{'plugin_timeout'};
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# Setting default timeout if is invalid
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if($timeout <= 0) {
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$timeout = 15;
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}
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# Build command to execute
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my $command = $plugin->{'execute'};
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my $parameters = $plugin->{'parameters'};
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# Macros
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eval {
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if ($module->{'macros'} ne '') {
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logger ($pa_config, "Decoding json macros from # $module_id plugin command '$command'", 10);
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my $macros = decode_json($module->{'macros'});
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my %macros = %{$macros};
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if(ref($macros) eq "HASH") {
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foreach my $macro_id (keys(%macros))
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{
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logger ($pa_config, "Replacing macro ".$macros{$macro_id}{'macro'}." by '".$macros{$macro_id}{'value'}."' in AM # $module_id ", 10);
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$parameters =~ s/$macros{$macro_id}{'macro'}/$macros{$macro_id}{'value'}/g;
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}
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}
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}
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};
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# If something went wrong with macros, we log it
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if ($@) {
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logger ($pa_config, "Error reading macros from module # $module_id. Probably malformed json", 10);
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}
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$command .= ' ' . $parameters;
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$command = decode_entities($command);
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logger ($pa_config, "Executing AM # $module_id plugin command '$command'", 9);
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# Execute command
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$command = $pa_config->{'plugin_exec'} . ' ' . $timeout . ' ' . $command;
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my $module_data;
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eval {
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$module_data = `$command`;
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};
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my $ReturnCode = ($? >> 8) & 0xff;
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if ($plugin->{'plugin_type'} == 1) {
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# Get the errorlevel if is a Nagios plugin type (parsing the errorlevel)
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# Nagios errorlevels:
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#('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
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# Numerical modules (Data) or Alphanumeric modules (String)
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# get reported data as is, ignoring return code.
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# Boolean data, transform module data depending on returning error code.
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if ($module->{'id_tipo_modulo'} == 2){
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if ($ReturnCode == 0){
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$module_data = 1;
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}
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elsif ($ReturnCode == 1){
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$module_data = -1;
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}
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elsif ($ReturnCode == 2){
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$module_data = 0;
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}
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elsif ($ReturnCode == 3 || $ReturnCode == 124){
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# 124 should be a exit code of the timeout command (command times out)
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$module_data = ''; # not defined = Uknown
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}
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elsif ($ReturnCode == 4){
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$module_data = 1;
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}
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}
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}
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if (! defined $module_data || $module_data eq '') {
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pandora_update_module_on_error ($pa_config, $module, $dbh);
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return;
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}
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my $utimestamp = time ();
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my $timestamp = strftime ("%Y-%m-%d %H:%M:%S", localtime($utimestamp));
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my %data = ("data" => $module_data);
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pandora_process_module ($pa_config, \%data, '', $module, '', $timestamp, $utimestamp, $self->getServerID (), $dbh);
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my $agent_os_version = get_db_value ($dbh, 'SELECT os_version FROM tagente WHERE id_agente = ?', $module->{'id_agente'});
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if ($agent_os_version eq ''){
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$agent_os_version = $pa_config->{'servername'}.'_Plugin';
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}
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pandora_update_agent ($pa_config, $timestamp, $module->{'id_agente'}, $agent_os_version, $pa_config->{'version'}, -1, $dbh);
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}
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1;
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__END__
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