centreon-plugins/cloud/cloudfoundry/restapi/custom/api.pm

309 lines
9.4 KiB
Perl

#
# Copyright 2021 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::cloudfoundry::restapi::custom::api;
use strict;
use warnings;
use centreon::plugins::http;
use JSON::XS;
use URI::Encode;
sub new {
my ($class, %options) = @_;
my $self = {};
bless $self, $class;
if (!defined($options{output})) {
print "Class Custom: Need to specify 'output' argument.\n";
exit 3;
}
if (!defined($options{options})) {
$options{output}->add_option_msg(short_msg => "Class Custom: Need to specify 'options' argument.");
$options{output}->option_exit();
}
if (!defined($options{noptions})) {
$options{options}->add_options(arguments => {
'hostname:s' => { name => 'hostname' },
'port:s' => { name => 'port' },
'proto:s' => { name => 'proto' },
'username:s' => { name => 'username' },
'password:s' => { name => 'password' },
'timeout:s' => { name => 'timeout' },
'api-path:s' => { name => 'api_path' },
'api-username:s' => { name => 'api_username' },
'api-password:s' => { name => 'api_password' }
});
}
$options{options}->add_help(package => __PACKAGE__, sections => 'REST API OPTIONS', once => 1);
$self->{output} = $options{output};
$self->{http} = centreon::plugins::http->new(%options);
return $self;
}
sub set_options {
my ($self, %options) = @_;
$self->{option_results} = $options{option_results};
}
sub set_defaults {}
sub check_options {
my ($self, %options) = @_;
$self->{hostname} = (defined($self->{option_results}->{hostname})) ? $self->{option_results}->{hostname} : undef;
$self->{port} = (defined($self->{option_results}->{port})) ? $self->{option_results}->{port} : 443;
$self->{proto} = (defined($self->{option_results}->{proto})) ? $self->{option_results}->{proto} : 'https';
$self->{username} = (defined($self->{option_results}->{username})) ? $self->{option_results}->{username} : 'cf';
$self->{password} = (defined($self->{option_results}->{password})) ? $self->{option_results}->{password} : '';
$self->{timeout} = (defined($self->{option_results}->{timeout})) ? $self->{option_results}->{timeout} : 10;
$self->{api_path} = (defined($self->{option_results}->{api_path})) ? $self->{option_results}->{api_path} : '/v2';
$self->{api_username} = (defined($self->{option_results}->{api_username})) ? $self->{option_results}->{api_username} : undef;
$self->{api_password} = (defined($self->{option_results}->{api_password})) ? $self->{option_results}->{api_password} : undef;
if (!defined($self->{hostname})) {
$self->{output}->add_option_msg(short_msg => "Need to specify hostname option.");
$self->{output}->option_exit();
}
if (!defined($self->{api_username})) {
$self->{output}->add_option_msg(short_msg => "Need to specify API username option.");
$self->{output}->option_exit();
}
if (!defined($self->{api_password})) {
$self->{output}->add_option_msg(short_msg => "Need to specify API password option.");
$self->{output}->option_exit();
}
return 0;
}
sub build_options_for_httplib {
my ($self, %options) = @_;
$self->{option_results}->{hostname} = $self->{hostname};
$self->{option_results}->{port} = $self->{port};
$self->{option_results}->{proto} = $self->{proto};
$self->{option_results}->{username} = $self->{username};
$self->{option_results}->{password} = $self->{password};
$self->{option_results}->{timeout} = $self->{timeout};
$self->{option_results}->{warning_status} = '';
$self->{option_results}->{critical_status} = '';
}
sub settings {
my ($self, %options) = @_;
$self->build_options_for_httplib();
$self->{http}->add_header(key => 'Accept', value => 'application/json');
$self->{http}->add_header(key => 'Content-Type', value => 'application/x-www-form-urlencoded');
if (defined($self->{access_token})) {
$self->{http}->add_header(key => 'Authorization', value => 'Bearer ' . $self->{access_token});
}
$self->{http}->set_options(%{$self->{option_results}});
}
sub request_api {
my ($self, %options) = @_;
my $content = $self->{http}->request(method => $options{method}, url_path => $self->{api_path} . $options{url_path},
query_form_post => $options{query_form_post}, critical_status => '', warning_status => '', unknown_status => '');
my $decoded;
eval {
$decoded = decode_json($content);
};
if ($@) {
$self->{output}->output_add(long_msg => $content, debug => 1);
$self->{output}->add_option_msg(short_msg => "Cannot decode json response");
$self->{output}->option_exit();
}
if ($self->{http}->get_code() != 200) {
$self->{output}->add_option_msg(short_msg => "Error code: " . $decoded->{error_code} . ". Description: " . $decoded->{description});
$self->{output}->option_exit();
}
return $decoded;
}
sub get_info {
my ($self, %options) = @_;
$self->settings();
return $self->request_api(method => 'GET', url_path => '/info');
}
sub get_access_token {
my ($self, %options) = @_;
my $info = $self->get_info();
my $uri = URI::Encode->new({encode_reserved => 1});
my $encoded_username = $uri->encode($self->{api_username});
my $encoded_password = $uri->encode($self->{api_password});
my $content = $self->{http}->request(method => 'POST', query_form_post => 'username=' . $encoded_username . '&password=' . $encoded_password . '&grant_type=password',
full_url => $info->{authorization_endpoint} . '/oauth/token', hostname => '',
basic => 1, credentials => 1, username => $self->{username}, password => $self->{password});
my $decoded;
eval {
$decoded = decode_json($content);
};
if ($@) {
$self->{output}->output_add(long_msg => $content, debug => 1);
$self->{output}->add_option_msg(short_msg => "Cannot decode json response");
$self->{output}->option_exit();
}
return $decoded->{access_token};
}
sub get_object_v2 {
my ($self, %options) = @_;
$self->settings();
my $url_path = $options{url_path};
my @result;
while(my $content = $self->request_api(%options)) {
if (defined($content->{resources})) {
push @result, @{$content->{resources}};
last if (!defined($content->{next_url}) ||
$content->{next_url} !~ /^$self->{api_path}$url_path.*&page=(.*).*/ ||
$content->{next_url} !~ /^$self->{api_path}$url_path.*?page=(.*).*/);
my $page = $1;
$options{url_path} = $url_path . '?page=' . $page;
} else {
return $content;
last;
}
}
return \@result;
}
sub get_object_v3 {
my ($self, %options) = @_;
$self->settings();
my $url_path = $options{url_path};
my @result;
while(my $content = $self->request_api(%options)) {
if (defined($content->{resources})) {
push @result, @{$content->{resources}};
last if (!defined($content->{pagination}->{next}->{href}) ||
$content->{pagination}->{next}->{href} !~ /^$self->{proto}\:\/\/$self->{hostname}$self->{api_path}$url_path.*&page=(.*).*/ ||
$content->{pagination}->{next}->{href} !~ /^$self->{proto}\:\/\/$self->{hostname}$self->{api_path}$url_path.*?page=(.*).*/);
my $page = $1;
$options{url_path} = $url_path . '?page=' . $page;
} else {
push @result, $content;
last;
}
}
return \@result;
}
sub get_object {
my ($self, %options) = @_;
if (!defined($self->{access_token})) {
$self->{access_token} = $self->get_access_token();
}
my $info = $self->get_info();
if ($info->{api_version} =~ /^2\..*/) {
return $self->get_object_v2(%options);
} else {
return $self->get_object_v3(%options); # Not tested
}
return undef;
}
1;
__END__
=head1 NAME
Cloud Foundry REST API
=head1 SYNOPSIS
Cloud Foundry Rest API custom mode
=head1 REST API OPTIONS
=over 8
=item B<--hostname>
Cloud Foundry API hostname.
=item B<--api-path>
Cloud Foundry API url path (Default: '/v2')
=item B<--api-username>
Cloud Foundry API username.
=item B<--api-password>
Cloud Foundry API password.
=item B<--port>
Cloud Foundry API port (Default: 443)
=item B<--proto>
Specify https if needed (Default: 'https')
=item B<--username>
Authorization endpoint username (Default: 'cf')
=item B<--password>
Authorization endpoint password (Default: '')
=item B<--timeout>
Set HTTP timeout
=back
=head1 DESCRIPTION
B<custom>.
=cut