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7a0d604cdd
* Automatic fixes for validations * webui * lint fixes * Fix an install issue with ConfigSeeder requesting cli input in web page. * Do not use c_echo in validate.php print_fail()
96 lines
3.6 KiB
PHP
96 lines
3.6 KiB
PHP
<?php
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/**
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* Python.php
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*
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* Check that various Python modules and functions exist.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <https://www.gnu.org/licenses/>.
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*
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* @link https://www.librenms.org
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*
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* @copyright 2020 Thomas Berberich
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* @author Thomas Berberich <sourcehhdoctor@gmail.com>
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*/
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namespace LibreNMS\Validations;
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use LibreNMS\Config;
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use LibreNMS\Util\Version;
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use LibreNMS\Validator;
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use Symfony\Component\Process\Process;
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class Python extends BaseValidation
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{
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const PYTHON_MIN_VERSION = '3.4.0';
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/**
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* Validate this module.
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* To return ValidationResults, call ok, warn, fail, or result methods on the $validator
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*
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* @param Validator $validator
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*/
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public function validate(Validator $validator): void
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{
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$version = Version::get()->python();
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if (empty($version)) {
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$validator->fail('python3 not found', 'Install Python 3 for your system.');
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return; // no need to check anything else
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}
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$this->checkVersion($validator, $version);
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$this->checkPipVersion($validator, $version);
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$this->checkExtensions($validator);
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}
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private function checkVersion(Validator $validator, $version)
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{
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if (version_compare($version, self::PYTHON_MIN_VERSION, '<')) {
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$validator->warn("Python version $version too old.", 'Python version ' . self::PYTHON_MIN_VERSION . ' is the minimum supported version. We recommend you update Python to a supported version.');
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}
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}
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private function checkPipVersion(Validator $validator, $version)
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{
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preg_match('/\(python ([0-9.]+)\)/', `pip3 --version 2>/dev/null`, $matches);
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$pip = $matches[1];
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$python = implode('.', array_slice(explode('.', $version), 0, 2));
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if ($pip && version_compare($python, $pip, '!=')) {
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$validator->fail("python3 ($python) and pip3 ($pip) versions do not match. This likely will cause dependencies to be installed for the wrong python version.");
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}
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}
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private function checkExtensions(Validator $validator)
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{
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$pythonExtensions = '/scripts/dynamic_check_requirements.py';
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$process = new Process([Config::get('install_dir') . $pythonExtensions, '-v']);
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$process->run();
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if ($process->getExitCode() !== 0) {
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$user = \config('librenms.user');
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$user_mismatch = function_exists('posix_getpwuid') ? (posix_getpwuid(posix_geteuid())['name'] ?? null) !== $user : false;
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if ($user_mismatch) {
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$validator->warn(
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"Could not check Python dependencies because this script is not running as $user",
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'The install docs show how this is done on a new install: https://docs.librenms.org/Installation/Install-LibreNMS/#configure-php-fpm'
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);
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} else {
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$validator->fail("Python3 module issue found: '" . $process->getOutput() . "'", 'pip3 install -r ' . Config::get('install_dir') . '/requirements.txt');
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}
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}
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}
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}
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