enh(plugin): add new mssql mode (#1693)

New page life expectancy mode

database/mssql/mode/pagelifeexpectancy.pm

@@ -0,0 +1,101 @@
+#
+# Copyright 2019 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package database::mssql::mode::pagelifeexpectancy;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'global', type => 0 },
+    ];
+
+    $self->{maps_counters}->{global} = [
+        { label => 'page-life-expectancy', nlabel => 'page.life.expectancy.seconds', set => {
+            key_values => [ { name => 'page_life_expectancy'}],
+            output_template => 'Page life expectancy : %d second(s)',
+            perfdatas => [
+                { value => 'page_life_expectancy_absolute', template => '%d', unit => 's', min => 0 },
+            ]
+        }}
+    ];
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
+    bless $self, $class;
+
+    $options{options}->add_options(arguments => {});
+
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+
+    $self->SUPER::check_options(%options);
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+    $self->{sql} = $options{sql};
+
+    $self->{sql}->connect();
+    $self->{sql}->query(query => q{
+        SELECT
+            cntr_value
+        FROM
+            sys.dm_os_performance_counters
+        WHERE
+            counter_name = 'Page life expectancy'
+        AND
+            object_name = 'SQLServer:Buffer Manager'
+    });
+
+    $self->{global}->{page_life_expectancy} = $self->{sql}->fetchrow_array();
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check MSSQL page life expectancy.
+
+=over 8
+
+=item B<--warning-page-life-expectancy>
+
+Threshold warning.
+
+=item B<--critical-page-life-expectancy>
+
+Threshold critical.
+
+=back
+
+=cut

database/mssql/plugin.pm

@@ -43,6 +43,7 @@ sub new {
         'list-databases'       => 'database::mssql::mode::listdatabases',
         'locks-waits'          => 'database::mssql::mode::lockswaits',
         'logs-size'            => 'database::mssql::mode::logssize',
+        'page-life-expectancy' => 'database::mssql::mode::pagelifeexpectancy',
         'sql'                  => 'centreon::common::protocols::sql::mode::sql',
         'sql-string'           => 'centreon::common::protocols::sql::mode::sqlstring',
         'transactions'         => 'database::mssql::mode::transactions',