335 lines
9.6 KiB
Perl
335 lines
9.6 KiB
Perl
#
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# Copyright 2021 Centreon (http://www.centreon.com/)
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#
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# Centreon is a full-fledged industry-strength solution that meets
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# the needs in IT infrastructure and application monitoring for
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# service performance.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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package cloud::kubernetes::custom::api;
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use strict;
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use warnings;
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use centreon::plugins::http;
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use DateTime;
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use JSON::XS;
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use URI::Encode;
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sub new {
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my ($class, %options) = @_;
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my $self = {};
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bless $self, $class;
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if (!defined($options{output})) {
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print "Class Custom: Need to specify 'output' argument.\n";
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exit 3;
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}
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if (!defined($options{options})) {
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$options{output}->add_option_msg(short_msg => "Class Custom: Need to specify 'options' argument.");
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$options{output}->option_exit();
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}
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if (!defined($options{noptions})) {
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$options{options}->add_options(arguments => {
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'hostname:s' => { name => 'hostname' },
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'port:s' => { name => 'port' },
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'proto:s' => { name => 'proto' },
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'token:s' => { name => 'token' },
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'timeout:s' => { name => 'timeout' },
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'limit:s' => { name => 'limit' },
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'config-file:s' => { name => 'config_file' }
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});
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}
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$options{options}->add_help(package => __PACKAGE__, sections => 'REST API OPTIONS', once => 1);
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$self->{output} = $options{output};
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$self->{http} = centreon::plugins::http->new(%options);
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return $self;
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}
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sub set_options {
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my ($self, %options) = @_;
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$self->{option_results} = $options{option_results};
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}
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sub set_defaults {}
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sub check_options {
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my ($self, %options) = @_;
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$self->{hostname} = (defined($self->{option_results}->{hostname})) ? $self->{option_results}->{hostname} : undef;
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$self->{port} = (defined($self->{option_results}->{port})) ? $self->{option_results}->{port} : 443;
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$self->{proto} = (defined($self->{option_results}->{proto})) ? $self->{option_results}->{proto} : 'https';
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$self->{timeout} = (defined($self->{option_results}->{timeout})) && $self->{option_results}->{timeout} =~ /(\d+)/ ? $1 : 10;
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$self->{token} = (defined($self->{option_results}->{token})) ? $self->{option_results}->{token} : '';
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$self->{limit} = (defined($self->{option_results}->{limit})) && $self->{option_results}->{limit} =~ /(\d+)/ ? $1 : 100;
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if (!defined($self->{hostname}) || $self->{hostname} eq '') {
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$self->{output}->add_option_msg(short_msg => "Need to specify --hostname option.");
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$self->{output}->option_exit();
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}
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if (!defined($self->{token}) || $self->{token} eq '') {
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$self->{output}->add_option_msg(short_msg => "Need to specify --token option.");
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$self->{output}->option_exit();
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}
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return 0;
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}
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sub build_options_for_httplib {
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my ($self, %options) = @_;
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$self->{option_results}->{hostname} = $self->{hostname};
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$self->{option_results}->{timeout} = $self->{timeout};
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$self->{option_results}->{port} = $self->{port};
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$self->{option_results}->{proto} = $self->{proto};
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$self->{option_results}->{warning_status} = '';
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$self->{option_results}->{critical_status} = '';
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$self->{option_results}->{unknown_status} = '';
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}
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sub settings {
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my ($self, %options) = @_;
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$self->build_options_for_httplib();
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$self->{http}->add_header(key => 'Accept', value => 'application/json');
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if (defined($self->{token})) {
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$self->{http}->add_header(key => 'Authorization', value => 'Bearer ' . $self->{token});
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}
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$self->{http}->set_options(%{$self->{option_results}});
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}
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sub request_api {
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my ($self, %options) = @_;
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$self->settings;
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$self->{output}->output_add(long_msg => "URL: '" . $self->{proto} . '://' . $self->{hostname} .
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':' . $self->{port} . $options{url_path} . "'", debug => 1);
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my $response = $self->{http}->request(%options);
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if ($self->{http}->get_code() != 200) {
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my $decoded;
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eval {
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$decoded = JSON::XS->new->utf8->decode($response);
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};
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if ($@) {
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$self->{output}->output_add(long_msg => $response, debug => 1);
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$self->{output}->add_option_msg(short_msg => "Cannot decode json response: $response");
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$self->{output}->option_exit();
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}
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if (defined($decoded->{code})) {
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$self->{output}->output_add(long_msg => "Error message: " . $decoded->{message}, debug => 1);
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$self->{output}->add_option_msg(short_msg => "API return error code '" . $decoded->{code} . "' (add --debug option for detailed message)");
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$self->{output}->option_exit();
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} else {
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$self->{output}->output_add(long_msg => "Error message: " . $decoded, debug => 1);
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$self->{output}->add_option_msg(short_msg => "API return error code '" . $self->{http}->get_code() . "' (add --debug option for detailed message)");
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$self->{output}->option_exit();
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}
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}
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my $decoded;
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eval {
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$decoded = JSON::XS->new->utf8->decode($response);
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};
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if ($@) {
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$self->{output}->output_add(long_msg => $response, debug => 1);
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$self->{output}->add_option_msg(short_msg => "Cannot decode json response: $response");
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$self->{output}->option_exit();
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}
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return $decoded;
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}
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sub request_api_paginate {
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my ($self, %options) = @_;
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my @items;
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my @get_param = ( 'limit=' . $self->{limit} );
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push @get_param, @{$options{get_param}} if (defined($options{get_param}));
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while (1) {
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my $response = $self->request_api(
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method => $options{method},
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url_path => $options{url_path},
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get_param => \@get_param
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);
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last if (!defined($response->{items}));
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push @items, @{$response->{items}};
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last if (!defined($response->{metadata}->{continue}));
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@get_param = ( 'limit=' . $self->{limit}, 'continue=' . $response->{metadata}->{continue} );
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push @get_param, @{$options{get_param}} if (defined($options{get_param}));
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}
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return \@items;
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}
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sub kubernetes_list_cronjobs {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/batch/v1beta1/cronjobs');
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return $response;
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}
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sub kubernetes_list_daemonsets {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/apps/v1/daemonsets');
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return $response;
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}
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sub kubernetes_list_deployments {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/apps/v1/deployments');
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return $response;
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}
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sub kubernetes_list_events {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/api/v1/events');
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return $response;
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}
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sub kubernetes_list_ingresses {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/extensions/v1beta1/ingresses');
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return $response;
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}
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sub kubernetes_list_namespaces {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/api/v1/namespaces');
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return $response;
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}
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sub kubernetes_list_nodes {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/api/v1/nodes');
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return $response;
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}
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sub kubernetes_list_rcs {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/api/v1/replicationcontrollers');
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return $response;
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}
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sub kubernetes_list_replicasets {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/apps/v1/replicasets');
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return $response;
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}
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sub kubernetes_list_services {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/v1/services');
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return $response;
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}
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sub kubernetes_list_statefulsets {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/apis/apps/v1/statefulsets');
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return $response;
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}
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sub kubernetes_list_pods {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/api/v1/pods');
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return $response;
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}
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sub kubernetes_list_pvs {
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my ($self, %options) = @_;
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my $response = $self->request_api_paginate(method => 'GET', url_path => '/api/v1/persistentvolumes');
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return $response;
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}
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1;
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__END__
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=head1 NAME
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Kubernetes Rest API
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=head1 SYNOPSIS
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Kubernetes Rest API custom mode
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=head1 REST API OPTIONS
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Kubernetes Rest API
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=over 8
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=item B<--hostname>
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Kubernetes API hostname.
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=item B<--port>
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API port (Default: 443)
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=item B<--proto>
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Specify https if needed (Default: 'https')
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=item B<--timeout>
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Set HTTP timeout
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=item B<--limit>
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Number of responses to return for each list calls.
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See https://kubernetes.io/docs/reference/kubernetes-api/common-parameters/common-parameters/#limit
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=back
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=head1 DESCRIPTION
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B<custom>.
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=cut
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