ezmigrationbundle/Command/StatusCommand.php

<?php

namespace Kaliop\eZMigrationBundle\Command;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Input\InputOption;
use Kaliop\eZMigrationBundle\API\Value\Migration;
use Kaliop\eZMigrationBundle\API\Value\MigrationDefinition;
use Symfony\Component\Console\Helper\Table;

/**
 * Command to display the status of migrations.
 *
 * @todo add option to skip displaying already executed migrations
 */
class StatusCommand extends AbstractCommand
{
    const STATUS_INVALID = -1;

    protected function configure()
    {
        $this->setName('kaliop:migration:status')
            ->setDescription('View the status of a set of migrations.')
            ->addOption('path', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, "The directory or file to load the migration definitions from")
            ->addOption('summary', null, InputOption::VALUE_NONE, "Only print summary information")
            ->setHelp(<<<EOT
The <info>kaliop:migration:status</info> command displays the status of all available migrations:

    <info>./ezpublish/console kaliop:migration:status</info>

You can optionally specify the path to migration versions with <info>--path</info>:

    <info>./ezpublish/console kaliop:migrations:status --path=/path/to/bundle/version_directory --path=/path/to/bundle/version_directory/single_migration_file</info>
EOT
            );
    }

    public function execute(InputInterface $input, OutputInterface $output)
    {
        $migrationsService = $this->getMigrationService();

        $migrationDefinitions = $migrationsService->getMigrationsDefinitions($input->getOption('path'));
        $migrations = $migrationsService->getMigrations();

        if (!count($migrationDefinitions) && !count($migrations)) {
            $output->writeln('<info>No migrations found</info>');
            return;
        }

        // create a unique ist of all migrations (coming from db) and definitions (coming from disk)
        $index = array();
        foreach ($migrationDefinitions as $migrationDefinition) {
            $index[$migrationDefinition->name] = array('definition' => $migrationDefinition);
        }
        foreach ($migrations as $migration) {
            if (isset($index[$migration->name])) {
                $index[$migration->name]['migration'] = $migration;
            } else {
                $index[$migration->name] = array('migration' => $migration);

                // no definition, but a migration is there. Check if the definition sits elsewhere on disk than we expect it to be...
                // q: what if we have a loader which does not work with is_file? Could we remove this check?
                if ($migration->path != '' && is_file($migration->path)) {
                    try {
                        $migrationDefinitionCollection = $migrationsService->getMigrationsDefinitions(array($migration->path));
                        if (count($migrationDefinitionCollection)) {
                            $index[$migration->name]['definition'] = reset($migrationDefinitionCollection);
                        }
                    } catch (\Exception $e) {
                        /// @todo one day we should be able to limit the kind of exceptions we have to catch here...
                    }
                }
            }
        }
        ksort($index);

        if (!$input->getOption('summary')) {
            if (count($index) > 50000) {
                $output->writeln("WARNING: printing the status table might take a while as it contains many rows. Please wait...");
            }
            $output->writeln("\n <info>==</info> All Migrations\n");
        }

        $summary = array(
            self::STATUS_INVALID => array('Invalid', 0),
            Migration::STATUS_TODO => array('To do', 0),
            Migration::STATUS_STARTED => array('Started', 0),
            Migration::STATUS_DONE => array('Done', 0),
            Migration::STATUS_SUSPENDED => array('Suspended', 0),
            Migration::STATUS_FAILED => array('Failed', 0),
            Migration::STATUS_SKIPPED => array('Skipped', 0),
            Migration::STATUS_PARTIALLY_DONE => array('Partially done', 0),
        );
        $data = array();

        $i = 1;
        foreach ($index as $name => $value) {
            if (!isset($value['migration'])) {
                $migrationDefinition = $migrationsService->parseMigrationDefinition($value['definition']);
                $notes = '';
                if ($migrationDefinition->status != MigrationDefinition::STATUS_PARSED) {
                    $notes = '<error>' . $migrationDefinition->parsingError . '</error>';
                    $summary[self::STATUS_INVALID][1]++;
                } else {
                    $summary[Migration::STATUS_TODO][1]++;
                }
                $data[] = array(
                    $i++,
                    $name,
                    '<error>not executed</error>',
                    '',
                    $notes
                );
            } else {
                $migration = $value['migration'];

                if (!isset($summary[$migration->status])) {
                    $summary[$migration->status] = array($migration->status, 0);
                }
                $summary[$migration->status][1]++;
                if ($input->getOption('summary')) {
                    continue;
                }

                switch ($migration->status) {
                    case Migration::STATUS_DONE:
                        $status = '<info>executed</info>';
                        break;
                    case Migration::STATUS_STARTED:
                        $status = '<comment>execution started</comment>';
                        break;
                    case Migration::STATUS_TODO:
                        // bold to-migrate!
                        $status = '<error>not executed</error>';
                        break;
                    case Migration::STATUS_SKIPPED:
                        $status = '<comment>skipped</comment>';
                        break;
                    case Migration::STATUS_PARTIALLY_DONE:
                        $status = '<comment>partially executed</comment>';
                        break;
                    case Migration::STATUS_SUSPENDED:
                        $status = '<comment>suspended</comment>';
                        break;
                    case Migration::STATUS_FAILED:
                        $status = '<error>failed</error>';
                        break;
                }
                $notes = array();
                if ($migration->executionError != '') {
                    $notes[] = "<error>{$migration->executionError}</error>";
                }
                if (!isset($value['definition'])) {
                    $notes[] = '<comment>The migration definition file can not be found any more</comment>';
                } else {
                    $migrationDefinition = $value['definition'];
                    if (md5($migrationDefinition->rawDefinition) != $migration->md5) {
                        $notes[] = '<comment>The migration definition file has now a different checksum</comment>';
                    }
                    if ($migrationDefinition->path != $migrationDefinition->path) {
                        $notes[] = '<comment>The migration definition file has now moved</comment>';
                    }
                }
                $notes = implode(' ', $notes);
                $data[] = array(
                    $i++,
                    $migration->name,
                    $status,
                    ($migration->executionDate != null ? date("Y-m-d H:i:s", $migration->executionDate) : ''),
                    $notes
                );
            }
        }

        if ($input->getOption('summary')) {
            $output->writeln("\n <info>==</info> Migrations Summary\n");
            // do not print info about the not yet supported case
            unset($summary[Migration::STATUS_PARTIALLY_DONE]);
            $data = $summary;
            $headers = array('Status', 'Count');
        } else {
            $headers = array('#', 'Migration', 'Status', 'Executed on', 'Notes');
        }

        $table = new Table($output);
        $table
            ->setHeaders($headers)
            ->setRows($data);
        $table->render();
    }
}