From b836e26941f611dd410353b7978c0359640e9e99 Mon Sep 17 00:00:00 2001
From: Thibault S <48209914+thibaults-centreon@users.noreply.github.com>
Date: Tue, 31 Mar 2020 14:10:53 +0200
Subject: [PATCH] add(plugin): Amazon EFS (#1913)

* add(plugin): Amazon EFS
---
 efs/mode/connections.pm | 231 ++++++++++++++++++++++++++++++
 efs/mode/datausage.pm   | 310 ++++++++++++++++++++++++++++++++++++++++
 efs/mode/discovery.pm   | 112 +++++++++++++++
 efs/plugin.pm           |  52 +++++++
 4 files changed, 705 insertions(+)
 create mode 100644 efs/mode/connections.pm
 create mode 100644 efs/mode/datausage.pm
 create mode 100644 efs/mode/discovery.pm
 create mode 100644 efs/plugin.pm

diff --git a/efs/mode/connections.pm b/efs/mode/connections.pm
new file mode 100644
index 000000000..aa7e4a092
--- /dev/null
+++ b/efs/mode/connections.pm
@@ -0,0 +1,231 @@
+#
+# Copyright 2020 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 cloud::aws::efs::mode::connections;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+
+my %metrics_mapping = (
+    'ClientConnections' => {
+        'output'    => 'Client Connections',
+        'label'     => 'client-connections',
+        'nlabel'    => 'efs.clients.connections.count',
+        'unit'      => ''
+    }
+);
+
+
+sub custom_metric_calc {
+    my ($self, %options) = @_;
+
+    $self->{result_values}->{timeframe} = $options{new_datas}->{$self->{instance} . '_timeframe'};
+    $self->{result_values}->{value} = $options{new_datas}->{$self->{instance} . '_' . $options{extra_options}->{metric}};
+    $self->{result_values}->{metric} = $options{extra_options}->{metric};
+    return 0;
+}
+
+sub custom_metric_threshold {
+    my ($self, %options) = @_;
+
+    my $exit = $self->{perfdata}->threshold_check(
+        value => $self->{result_values}->{value},
+        threshold => [ { label => 'critical-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}, exit_litteral => 'critical' },
+                       { label => 'warning-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}, exit_litteral => 'warning' } ]);
+    return $exit;
+}
+
+sub custom_metric_perfdata {
+    my ($self, %options) = @_;
+
+    $self->{output}->perfdata_add(
+        instances   => $self->{instance},
+        label       => $metrics_mapping{$self->{result_values}->{metric}}->{label},
+        nlabel      => $metrics_mapping{$self->{result_values}->{metric}}->{nlabel},
+        unit        => $metrics_mapping{$self->{result_values}->{metric}}->{unit},
+        value       => $self->{result_values}->{value},
+        warning     => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}),
+        critical    => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $metrics_mapping{$self->{result_values}->{metric}}->{label})
+    );
+}
+
+sub custom_metric_output {
+    my ($self, %options) = @_;
+    my $msg = "";
+
+    my ($value, $unit) = ($self->{result_values}->{value}, $metrics_mapping{$self->{result_values}->{metric}}->{unit});
+    return $msg = sprintf("%s: %.2f %s", $metrics_mapping{$self->{result_values}->{metric}}->{output}, $value, $unit);
+}
+
+
+sub prefix_metric_output {
+    my ($self, %options) = @_;
+
+    return "'" . $options{instance_value}->{display} . "' ";
+}
+
+sub prefix_statistics_output {
+    my ($self, %options) = @_;
+
+    return "Statistic '" . $options{instance_value}->{display} . "' Metrics ";
+}
+
+sub long_output {
+    my ($self, %options) = @_;
+
+    return "EFS FileSystemId'" . $options{instance_value}->{display} . "' ";
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+        
+    $self->{maps_counters_type} = [
+        { name => 'metrics', type => 3, cb_prefix_output => 'prefix_metric_output', cb_long_output => 'long_output',
+          message_multiple => 'All FS metrics are ok', indent_long_output => '    ',
+            group => [
+                { name => 'statistics', display_long => 1, cb_prefix_output => 'prefix_statistics_output',
+                  message_multiple => 'All metrics are ok', type => 1, skipped_code => { -10 => 1 } },
+            ]
+        }
+    ];
+
+    foreach my $metric (keys %metrics_mapping) {
+        my $entry = {
+            label => $metrics_mapping{$metric}->{label},
+            set => {
+                key_values => [ { name => $metric }, { name => 'timeframe' }, { name => 'display' } ],
+                closure_custom_calc => $self->can('custom_metric_calc'),
+                closure_custom_calc_extra_options => { metric => $metric },
+                closure_custom_output => $self->can('custom_metric_output'),
+                closure_custom_perfdata => $self->can('custom_metric_perfdata'),
+                closure_custom_threshold_check => $self->can('custom_metric_threshold'),
+            }
+        };
+        push @{$self->{maps_counters}->{statistics}}, $entry;
+    }
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
+    bless $self, $class;
+    
+    $options{options}->add_options(arguments => {
+            "name:s@"   => { name => 'name' },
+    });
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::check_options(%options);
+
+    if (!defined($self->{option_results}->{name}) || $self->{option_results}->{name} eq '') {
+        $self->{output}->add_option_msg(short_msg => "Need to specify --name option.");
+        $self->{output}->option_exit();
+    }
+
+    foreach my $instance (@{$self->{option_results}->{name}}) {
+        if ($instance ne '') {
+            push @{$self->{aws_instance}}, $instance;
+        }
+    }
+
+    $self->{aws_timeframe} = defined($self->{option_results}->{timeframe}) ? $self->{option_results}->{timeframe} : 172800;
+    $self->{aws_period} = defined($self->{option_results}->{period}) ? $self->{option_results}->{period} : 86400;
+    $self->{aws_statistics} = ['Sum'];
+    
+    foreach my $metric (keys %metrics_mapping) {
+        next if (defined($self->{option_results}->{filter_metric}) && $self->{option_results}->{filter_metric} ne ''
+            && $metric !~ /$self->{option_results}->{filter_metric}/);
+        push @{$self->{aws_metrics}}, $metric;
+    }
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    my %metric_results;
+    foreach my $instance (@{$self->{aws_instance}}) {
+        $metric_results{$instance} = $options{custom}->cloudwatch_get_metrics(
+            region => $self->{option_results}->{region},
+            namespace => 'AWS/EFS',
+            dimensions => [ { Name => 'FileSystemId', Value => $instance } ],
+            metrics => $self->{aws_metrics},
+            statistics => $self->{aws_statistics},
+            timeframe => $self->{aws_timeframe},
+            period => $self->{aws_period},
+        );
+        
+        foreach my $metric (@{$self->{aws_metrics}}) {
+            foreach my $statistic (@{$self->{aws_statistics}}) {
+                next if (!defined($metric_results{$instance}->{$metric}->{lc($statistic)}) &&
+                    !defined($self->{option_results}->{zeroed}));
+
+                $self->{metrics}->{$instance}->{display} = $instance;
+                $self->{metrics}->{$instance}->{statistics}->{lc($statistic)}->{display} = $statistic;
+                $self->{metrics}->{$instance}->{statistics}->{lc($statistic)}->{timeframe} = $self->{aws_timeframe};
+                $self->{metrics}->{$instance}->{statistics}->{lc($statistic)}->{$metric} = 
+                    defined($metric_results{$instance}->{$metric}->{lc($statistic)}) ? 
+                    $metric_results{$instance}->{$metric}->{lc($statistic)} : 0;
+            }
+        }
+    }
+
+    if (scalar(keys %{$self->{metrics}}) <= 0) {
+        $self->{output}->add_option_msg(short_msg => 'No metrics. Check your options or use --zeroed option to set 0 on undefined values');
+        $self->{output}->option_exit();
+    }
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check EFS FileSystem Connection Count.
+
+Example: 
+perl centreon_plugins.pl --plugin=cloud::aws::efs::plugin --custommode=paws --mode=connections --region='eu-west-1'
+--name='fs-1234abcd' --warning-client-connections='50' --critical-client-connections='100' --verbose
+
+See 'https://docs.aws.amazon.com/efs/latest/ug/monitoring-cloudwatch.html' for more information.
+
+
+=over 8
+
+=item B<--name>
+
+Set the instance name (Required) (Can be multiple).
+
+=item B<--warning-client-connections>
+
+Warning threshold.
+
+=item B<--critical-client-connections>
+
+Critical threshold.
+
+=back
+
+=cut
diff --git a/efs/mode/datausage.pm b/efs/mode/datausage.pm
new file mode 100644
index 000000000..3711b2f39
--- /dev/null
+++ b/efs/mode/datausage.pm
@@ -0,0 +1,310 @@
+#
+# Copyright 2020 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 cloud::aws::efs::mode::datausage;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+
+my %metrics_mapping = (
+    'DataReadIOBytes' => {
+        'output'    => 'Data Read IO Bytes',
+        'label'     => 'data-iobytes-read',
+        'nlabel'    => {
+            'absolute' => 'efs.data.iobytes.read.bytes',
+            'per_second' => 'efs.data.iobytes.read.bytespersecond',
+        },
+        'unit' => 'B'
+    },
+    'DataWriteIOBytes' => {
+        'output'    => 'Data Write IO Bytes',
+        'label'     => 'data-iobytes-write',
+        'nlabel'    => {
+            'absolute'      => 'efs.data.iobytes.write.bytes',
+            'per_second'    => 'efs.data.iobytes.write.bytespersecond',
+        },
+        'unit' => 'B'
+    },
+    'MetaDataIOBytes' => {
+        'output'    => 'MetaData IO Bytes',
+        'label'     => 'metadata-iobytes',
+        'nlabel'    => {
+            'absolute'      => 'efs.metadata.iobytes.bytes',
+            'per_second'    => 'efs.metadata.iobytes.bytespersecond',
+        },
+        'unit' => 'B'
+    },
+    'TotalIOBytes' => {
+        'output' => 'Total IO Bytes',
+        'label' => 'total-iobytes',
+        'nlabel' => {
+            'absolute'      => 'efs.total.iobytes.bytes',
+            'per_second'    => 'efs.total.iobytes.bytespersecond',
+        },
+        'unit' => 'B'
+    },
+    'BurstCreditBalance' => {
+        'output' => 'Burst Credit Balance Bytes',
+        'label' => 'burst-bytes',
+        'nlabel' => {
+            'absolute'      => 'efs.creditbalance.burst.bytes',
+            'per_second'    => 'efs.creditbalance.burst.bytespersecond',
+        },
+        'unit' => 'B'
+    }
+
+);
+
+sub custom_metric_calc {
+    my ($self, %options) = @_;
+    
+    $self->{result_values}->{timeframe} = $options{new_datas}->{$self->{instance} . '_timeframe'};
+    $self->{result_values}->{value} = $options{new_datas}->{$self->{instance} . '_' . $options{extra_options}->{metric}};
+    $self->{result_values}->{value_per_sec} = $self->{result_values}->{value} / $self->{result_values}->{timeframe};
+    $self->{result_values}->{metric} = $options{extra_options}->{metric};
+    return 0;
+}
+
+sub custom_metric_threshold {
+    my ($self, %options) = @_;
+
+    my $exit = $self->{perfdata}->threshold_check(
+        value => defined($self->{instance_mode}->{option_results}->{per_sec}) ? $self->{result_values}->{value_per_sec} : $self->{result_values}->{value},
+        threshold => [ { label => 'critical-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}, exit_litteral => 'critical' },
+                       { label => 'warning-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}, exit_litteral => 'warning' } ]);
+    return $exit;
+}
+
+sub custom_metric_perfdata {
+    my ($self, %options) = @_;
+
+    $self->{output}->perfdata_add(
+        instances => $self->{instance},
+        label => $metrics_mapping{$self->{result_values}->{metric}}->{label},
+        nlabel => defined($self->{instance_mode}->{option_results}->{per_sec}) ?
+            $metrics_mapping{$self->{result_values}->{metric}}->{nlabel}->{per_second} :
+            $metrics_mapping{$self->{result_values}->{metric}}->{nlabel}->{absolute},
+        unit => defined($self->{instance_mode}->{option_results}->{per_sec}) ?
+            $metrics_mapping{$self->{result_values}->{metric}}->{unit} . '/s' :
+            $metrics_mapping{$self->{result_values}->{metric}}->{unit},
+        value => sprintf("%.2f", defined($self->{instance_mode}->{option_results}->{per_sec}) ?
+            $self->{result_values}->{value_per_sec} :
+            $self->{result_values}->{value}),
+        warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}),
+        critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $metrics_mapping{$self->{result_values}->{metric}}->{label}),
+    );
+}
+
+sub custom_metric_output {
+    my ($self, %options) = @_;
+    my $msg = "";
+
+    if (defined($self->{instance_mode}->{option_results}->{per_sec})) {
+        my ($value, $unit) = ($metrics_mapping{$self->{result_values}->{metric}}->{unit} eq 'B') ? 
+            $self->{perfdata}->change_bytes(value => $self->{result_values}->{value_per_sec}) :
+            ($self->{result_values}->{value_per_sec}, $metrics_mapping{$self->{result_values}->{metric}}->{unit});
+        $msg = sprintf("%s: %.2f %s", $metrics_mapping{$self->{result_values}->{metric}}->{output}, $value, $unit . '/s');
+    } else {
+        my ($value, $unit) = ($metrics_mapping{$self->{result_values}->{metric}}->{unit} eq 'B') ? 
+            $self->{perfdata}->change_bytes(value => $self->{result_values}->{value}) :
+            ($self->{result_values}->{value}, $metrics_mapping{$self->{result_values}->{metric}}->{unit});
+        $msg = sprintf("%s: %.2f %s", $metrics_mapping{$self->{result_values}->{metric}}->{output}, $value, $unit);
+    }
+    return $msg;
+}
+
+sub prefix_metric_output {
+    my ($self, %options) = @_;
+    
+    return "'" . $options{instance_value}->{display} . "' ";
+}
+
+sub prefix_statistics_output {
+    my ($self, %options) = @_;
+    
+    return "Statistic '" . $options{instance_value}->{display} . "' Metrics ";
+}
+
+sub long_output {
+    my ($self, %options) = @_;
+
+    return "EFS FileSystemId'" . $options{instance_value}->{display} . "' ";
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+    
+    $self->{maps_counters_type} = [
+        { name => 'metrics', type => 3, cb_prefix_output => 'prefix_metric_output', cb_long_output => 'long_output',
+          message_multiple => 'All FS metrics are ok', indent_long_output => '    ',
+            group => [
+                { name => 'statistics', display_long => 1, cb_prefix_output => 'prefix_statistics_output',
+                  message_multiple => 'All metrics are ok', type => 1, skipped_code => { -10 => 1 } },
+            ]
+        }
+    ];
+
+    foreach my $metric (keys %metrics_mapping) {
+        my $entry = {
+            label => $metrics_mapping{$metric}->{label},
+            set => {
+                key_values => [ { name => $metric }, { name => 'timeframe' }, { name => 'display' } ],
+                closure_custom_calc => $self->can('custom_metric_calc'),
+                closure_custom_calc_extra_options => { metric => $metric },
+                closure_custom_output => $self->can('custom_metric_output'),
+                closure_custom_perfdata => $self->can('custom_metric_perfdata'),
+                closure_custom_threshold_check => $self->can('custom_metric_threshold'),
+            }
+        };
+        push @{$self->{maps_counters}->{statistics}}, $entry;
+    }
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
+    bless $self, $class;
+    
+    $options{options}->add_options(arguments => {
+        "type:s"            => { name => 'type' },
+        "name:s@"           => { name => 'name' },
+        "per-sec"           => { name => 'per_sec' },
+        "filter-metric:s"   => { name => 'filter_metric' },
+    });
+    
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::check_options(%options);
+
+    if (!defined($self->{option_results}->{name}) || $self->{option_results}->{name} eq '') {
+        $self->{output}->add_option_msg(short_msg => "Need to specify --name option.");
+        $self->{output}->option_exit();
+    }
+
+    foreach my $instance (@{$self->{option_results}->{name}}) {
+        if ($instance ne '') {
+            push @{$self->{aws_instance}}, $instance;
+        }
+    }
+
+    $self->{aws_timeframe} = defined($self->{option_results}->{timeframe}) ? $self->{option_results}->{timeframe} : 600;
+    $self->{aws_period} = defined($self->{option_results}->{period}) ? $self->{option_results}->{period} : 60;
+    
+    $self->{aws_statistics} = ['Average'];
+    if (defined($self->{option_results}->{statistic})) {
+        $self->{aws_statistics} = [];
+        foreach my $stat (@{$self->{option_results}->{statistic}}) {
+            if ($stat ne '') {
+                push @{$self->{aws_statistics}}, ucfirst(lc($stat));
+            }
+        }
+    }
+
+    foreach my $metric (keys %metrics_mapping) {
+        next if (defined($self->{option_results}->{filter_metric}) && $self->{option_results}->{filter_metric} ne ''
+            && $metric !~ /$self->{option_results}->{filter_metric}/);
+
+        push @{$self->{aws_metrics}}, $metric;
+    }
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    my %metric_results;
+    foreach my $instance (@{$self->{aws_instance}}) {
+        $metric_results{$instance} = $options{custom}->cloudwatch_get_metrics(
+            region => $self->{option_results}->{region},
+            namespace => 'AWS/EFS',
+            dimensions => [ { Name => "FileSystemId", Value => $instance } ],
+            metrics => $self->{aws_metrics},
+            statistics => $self->{aws_statistics},
+            timeframe => $self->{aws_timeframe},
+            period => $self->{aws_period},
+        );
+
+        foreach my $metric (@{$self->{aws_metrics}}) {
+            foreach my $statistic (@{$self->{aws_statistics}}) {
+                next if (!defined($metric_results{$instance}->{$metric}->{lc($statistic)}) &&
+                    !defined($self->{option_results}->{zeroed}));
+
+                $self->{metrics}->{$instance}->{display} = $instance;
+                $self->{metrics}->{$instance}->{statistics}->{lc($statistic)}->{display} = $statistic;
+                $self->{metrics}->{$instance}->{statistics}->{lc($statistic)}->{timeframe} = $self->{aws_timeframe};
+                $self->{metrics}->{$instance}->{statistics}->{lc($statistic)}->{$metric} = 
+                    defined($metric_results{$instance}->{$metric}->{lc($statistic)}) ? 
+                    $metric_results{$instance}->{$metric}->{lc($statistic)} : 0;
+            }
+        }
+    }
+
+    if (scalar(keys %{$self->{metrics}}) <= 0) {
+        $self->{output}->add_option_msg(short_msg => 'No metrics. Check your options or use --zeroed option to set 0 on undefined values');
+        $self->{output}->option_exit();
+    }
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check EFS FileSystem Data IO metrics.
+
+Example:
+perl centreon_plugins.pl --plugin=cloud::aws::efs::plugin --custommode=paws --mode=datausage --region='eu-west-1'
+--name='fs-1234abcd' --filter-metric='DataReadIOBytes' --warning-data-iobytes-read='5' --critical-data-iobytes-read='10' --verbose
+
+See 'https://docs.aws.amazon.com/efs/latest/ug/monitoring-cloudwatch.html' for more information.
+
+
+=over 8
+
+=item B<--name>
+
+Set the instance name (Required) (Can be multiple).
+
+=item B<--filter-metric>
+
+Filter on a specific metric 
+Can be: DataReadIOBytes, DataWriteIOBytes, MetaDataIOBytes, TotalIOBytes, BurstCreditBalance
+
+=item B<--statistic>
+
+Set the metric calculation method (Default: Average)
+Can be 'minimum', 'maximum', 'average', 'sum'
+
+=item B<--warning-$metric$>
+
+Thresholds warning ($metric$ can be: 'data-iobytes-read', 'data-iobytes-write', 'metadata-iobytes', 'total-iobytes', 'burst-bytes').
+
+=item B<--critical-$metric$>
+
+Thresholds critical ($metric$ can be: 'data-iobytes-read', 'data-iobytes-write', 'metadata-iobytes', 'total-iobytes', 'burst-bytes').
+
+=back
+
+=cut
diff --git a/efs/mode/discovery.pm b/efs/mode/discovery.pm
new file mode 100644
index 000000000..f66982d8b
--- /dev/null
+++ b/efs/mode/discovery.pm
@@ -0,0 +1,112 @@
+#
+# Copyright 2020 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 cloud::aws::efs::mode::discovery;
+
+use base qw(centreon::plugins::mode);
+
+use strict;
+use warnings;
+use JSON::XS;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+    
+    $options{options}->add_options(arguments => {
+        "prettify"  => { name => 'prettify' },
+    });
+    
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::init(%options);
+}
+
+sub run {
+    my ($self, %options) = @_;
+
+    my @disco_data;
+    my $disco_stats;
+
+    $disco_stats->{start_time} = time();
+
+    my $fs_instances = $options{custom}->discovery(
+        region => $self->{option_results}->{region},
+        service => 'efs',
+        command => 'describe-file-systems'
+    );
+
+    foreach my $fs_instance (@{$fs_instances->{FileSystems}}) {
+        next if (!defined($fs_instance->{FileSystemId}));
+        my %efs;
+        $efs{type} = "efs";
+        $efs{id} = $fs_instance->{FileSystemId};
+        $efs{name} = $fs_instance->{Name};
+        $efs{creation_time} = $fs_instance->{CreationTime};
+        $efs{size} = $fs_instance->{SizeInBytes}->{Value};
+        $efs{perf_mode} = $fs_instance->{PerformanceMode };
+        $efs{is_encrypted} = $fs_instance->{Encrypted};
+        $efs{throughput_mode} = $fs_instance->{ThroughputMode};
+        push @disco_data, \%efs;
+    }
+
+    $disco_stats->{end_time} = time();
+    $disco_stats->{duration} = $disco_stats->{end_time} - $disco_stats->{start_time};
+    $disco_stats->{discovered_items} = @disco_data;
+    $disco_stats->{results} = \@disco_data;
+
+    my $encoded_data;
+    eval {
+        if (defined($self->{option_results}->{prettify})) {
+            $encoded_data = JSON::XS->new->utf8->pretty->encode($disco_stats);
+        } else {
+            $encoded_data = JSON::XS->new->utf8->encode($disco_stats);
+        }
+    };
+    if ($@) {
+        $encoded_data = '{"code":"encode_error","message":"Cannot encode discovered data into JSON format"}';
+    }
+    
+    $self->{output}->output_add(short_msg => $encoded_data);
+    $self->{output}->display(nolabel => 1, force_ignore_perfdata => 1);
+    $self->{output}->exit();
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+EFS discovery.
+
+=over 8
+
+=item B<--prettify>
+
+Prettify JSON output.
+
+=back
+
+=cut
diff --git a/efs/plugin.pm b/efs/plugin.pm
new file mode 100644
index 000000000..1921b281a
--- /dev/null
+++ b/efs/plugin.pm
@@ -0,0 +1,52 @@
+#
+# Copyright 2020 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 cloud::aws::efs::plugin;
+
+use strict;
+use warnings;
+use base qw(centreon::plugins::script_custom);
+
+sub new {
+    my ( $class, %options ) = @_;
+    my $self = $class->SUPER::new( package => __PACKAGE__, %options );
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    %{ $self->{modes} } = (
+        'connections'       => 'cloud::aws::efs::mode::connections',
+        'datausage'         => 'cloud::aws::efs::mode::datausage',
+        'discovery'         => 'cloud::aws::efs::mode::discovery'
+    );
+
+    $self->{custom_modes}{paws} = 'cloud::aws::custom::paws';
+    $self->{custom_modes}{awscli} = 'cloud::aws::custom::awscli';
+    return $self;
+}
+
+1;
+
+__END__
+
+=head1 PLUGIN DESCRIPTION
+
+Check Amazon Elastic File System (Amazon EFS).
+
+=cut