Passed
Pull Request — master (#681)
by Jonathan
02:01
created

Migrator::migrate()   D

Complexity

Conditions 15
Paths 42

Size

Total Lines 94
Code Lines 44

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 45
CRAP Score 15

Importance

Changes 0
Metric Value
cc 15
eloc 44
nc 42
nop 4
dl 0
loc 94
ccs 45
cts 45
cp 1
crap 15
rs 4.9121
c 0
b 0
f 0

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
<?php
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declare(strict_types=1);
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namespace Doctrine\Migrations;
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use Doctrine\Migrations\Configuration\Configuration;
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use Doctrine\Migrations\Exception\MigrationException;
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use Doctrine\Migrations\Exception\NoMigrationsToExecute;
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use Doctrine\Migrations\Exception\UnknownMigrationVersion;
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use Doctrine\Migrations\Tools\BytesFormatter;
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use const COUNT_RECURSIVE;
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use function count;
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use function sprintf;
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class Migrator
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{
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    /** @var Configuration */
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    private $configuration;
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    /** @var MigrationRepository */
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    private $migrationRepository;
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    /** @var OutputWriter */
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    private $outputWriter;
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    /** @var Stopwatch */
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    private $stopwatch;
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    /** @var bool */
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    private $noMigrationException = false;
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    public function __construct(
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        Configuration $configuration,
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        MigrationRepository $migrationRepository,
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        OutputWriter $outputWriter,
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        Stopwatch $stopwatch
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    ) {
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        $this->configuration       = $configuration;
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        $this->migrationRepository = $migrationRepository;
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        $this->outputWriter        = $outputWriter;
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        $this->stopwatch           = $stopwatch;
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    }
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    public function setNoMigrationException(bool $noMigrationException = false) : void
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    {
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        $this->noMigrationException = $noMigrationException;
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    }
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    /** @return string[][] */
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    public function getSql(?string $to = null) : array
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    {
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        return $this->migrate($to, true);
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    }
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    public function writeSqlFile(string $path, ?string $to = null) : bool
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    {
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        $sql = $this->getSql($to);
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        $from = $this->migrationRepository->getCurrentVersion();
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        if ($to === null) {
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            $to = $this->migrationRepository->getLatestVersion();
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        }
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        $direction = $from > $to
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            ? VersionDirection::DOWN
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            : VersionDirection::UP;
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        $this->outputWriter->write(
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            sprintf("-- Migrating from %s to %s\n", $from, $to)
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        );
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        /**
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         * Since the configuration object changes during the creation we cannot inject things
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         * properly, so I had to violate LoD here (so please, let's find a way to solve it on v2).
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         */
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        return $this->configuration
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            ->getQueryWriter()
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            ->write($path, $direction, $sql);
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    }
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    /**
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     * @throws MigrationException
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     *
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     * @return string[][]
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     */
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    public function migrate(
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        ?string $to = null,
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        bool $dryRun = false,
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        bool $timeAllQueries = false,
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        ?callable $confirm = null
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    ) : array {
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        if ($to === null) {
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            $to = $this->migrationRepository->getLatestVersion();
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        }
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        $from = $this->migrationRepository->getCurrentVersion();
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        $versions = $this->migrationRepository->getMigrations();
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        if (! isset($versions[$to]) && $to > 0) {
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            throw UnknownMigrationVersion::new($to);
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        }
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        $direction = $from > $to
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            ? VersionDirection::DOWN
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            : VersionDirection::UP;
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        $migrationsToExecute = $this->configuration
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            ->getMigrationsToExecute($direction, $to);
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        /**
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         * If
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         *  there are no migrations to execute
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         *  and there are migrations,
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         *  and the migration from and to are the same
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         * means we are already at the destination return an empty array()
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         * to signify that there is nothing left to do.
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         */
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        if ($from === $to && count($migrationsToExecute) === 0 && count($versions) !== 0) {
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            return $this->noMigrations();
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        }
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        if (! $dryRun && $this->migrationsCanExecute($confirm) === false) {
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            return [];
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        }
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        $output  = $dryRun ? 'Executing dry run of migration' : 'Migrating';
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        $output .= ' <info>%s</info> to <comment>%s</comment> from <comment>%s</comment>';
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        $this->outputWriter->write(sprintf($output, $direction, $to, $from));
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        /**
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         * If there are no migrations to execute throw an exception.
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         */
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        if (count($migrationsToExecute) === 0 && ! $this->noMigrationException) {
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            throw NoMigrationsToExecute::new();
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        } elseif (count($migrationsToExecute) === 0) {
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            return $this->noMigrations();
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        }
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        $stopwatchEvent = $this->stopwatch->start('migrate');
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        $this->configuration->dispatchMigrationEvent(Events::onMigrationsMigrating, $direction, $dryRun);
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        $sql = [];
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        foreach ($migrationsToExecute as $version) {
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            $versionExecutionResult = $version->execute($direction, $dryRun, $timeAllQueries);
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            $sql[$version->getVersion()] = $versionExecutionResult->getSql();
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        }
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        $this->configuration->dispatchMigrationEvent(Events::onMigrationsMigrated, $direction, $dryRun);
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        $stopwatchEvent->stop();
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        $this->outputWriter->write("\n  <comment>------------------------</comment>\n");
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        $this->outputWriter->write(sprintf(
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            '  <info>++</info> finished in %sms',
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            $stopwatchEvent->getDuration()
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        ));
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        $this->outputWriter->write(sprintf(
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            '  <info>++</info> used %s memory',
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            BytesFormatter::formatBytes($stopwatchEvent->getMemory())
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        ));
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        $this->outputWriter->write(sprintf(
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            '  <info>++</info> %s migrations executed',
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            count($migrationsToExecute)
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        ));
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        $this->outputWriter->write(sprintf(
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            '  <info>++</info> %s sql queries',
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            count($sql, COUNT_RECURSIVE) - count($sql)
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        ));
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        return $sql;
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    }
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    /** @return string[][] */
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    private function noMigrations() : array
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    {
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        $this->outputWriter->write('<comment>No migrations to execute.</comment>');
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        return [];
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    }
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    private function migrationsCanExecute(?callable $confirm = null) : bool
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    {
194 27
        return $confirm === null ? true : (bool) $confirm();
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    }
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}
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