Write dump information and dump progress bar to stderr when verbose m…

…ode is enabled

app/config/services.yaml

@@ -27,6 +27,11 @@ services:
         arguments:
             - '@faker.service'
 
+    console.dump_info:
+        class: 'Smile\GdprDump\Console\Helper\DumpInfo'
+        arguments:
+            - '@event_dispatcher'
+
     command.compile:
         class: 'Smile\GdprDump\Console\Command\CompileCommand'
         arguments:
@@ -40,6 +45,7 @@ services:
             - '@config.loader'
             - '@config.schema_validator'
             - '@config.compiler'
+            - '@console.dump_info'
 
     config.loader:
         class: 'Smile\GdprDump\Config\Loader\ConfigLoader'

src/Console/Command/DumpCommand.php

@@ -12,6 +12,7 @@
 use Smile\GdprDump\Config\Loader\ConfigLoaderInterface;
 use Smile\GdprDump\Config\Validator\ValidationResultInterface;
 use Smile\GdprDump\Config\Validator\ValidatorInterface;
+use Smile\GdprDump\Console\Helper\DumpInfo;
 use Smile\GdprDump\Dumper\DumperInterface;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Helper\QuestionHelper;
@@ -27,7 +28,8 @@ public function __construct(
         private DumperInterface $dumper,
         private ConfigLoaderInterface $configLoader,
         private ValidatorInterface $validator,
-        private CompilerInterface $compiler
+        private CompilerInterface $compiler,
+        private DumpInfo $dumpInfo
     ) {
         parent::__construct();
     }
@@ -69,6 +71,10 @@ public function execute(InputInterface $input, OutputInterface $output): int
                 $config->set('database', $database);
             }
 
+            if ($output->isVerbose()) {
+                $this->dumpInfo->setOutput($output);
+            }
+
             $this->dumper->dump($config);
         } catch (Exception $e) {
             if ($output->isVerbose()) {

src/Console/Helper/DumpInfo.php

@@ -0,0 +1,181 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Smile\GdprDump\Console\Helper;
+
+use Smile\GdprDump\Database\Metadata\MetadataInterface;
+use Smile\GdprDump\Dumper\Config\DumperConfig;
+use Smile\GdprDump\Dumper\Event\DumpEvent;
+use Smile\GdprDump\Dumper\Event\DumpFinishedEvent;
+use Symfony\Component\Console\Helper\ProgressBar;
+use Symfony\Component\Console\Output\ConsoleOutputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+class DumpInfo
+{
+    private OutputInterface $output;
+    private ProgressBar $progressBar;
+    private ?array $lastTableInfo = null;
+
+    public function __construct(private EventDispatcherInterface $eventDispatcher)
+    {
+    }
+
+    /**
+     * Set the output that will display the dump progress.
+     */
+    public function setOutput(OutputInterface $output): void
+    {
+        if ($output instanceof ConsoleOutputInterface) {
+            $output = $output->getErrorOutput();
+        }
+
+        $this->output = $output;
+        $this->progressBar = new ProgressBar($output);
+        $this->progressBar->minSecondsBetweenRedraws(0.1); // default: 0.04
+        $this->eventDispatcher->addListener(DumpEvent::class, $this->getDumpStartedListener());
+        $this->eventDispatcher->addListener(DumpFinishedEvent::class, $this->getDumpFinishedListener());
+    }
+
+    /**
+     * Get the listener that will be triggered when a dump is started.
+     */
+    private function getDumpStartedListener(): callable
+    {
+        return function (DumpEvent $event): void {
+            $config = $event->getConfig();
+            $database = $event->getDatabase();
+
+            // DSN
+            $this->displaySection('Database settings');
+            $this->displaySectionItem('Dsn', $database->getDriver()->getDsn());
+            $this->displaySectionItem(
+                'Using password',
+                $database->getConnectionParams()->get('password') ? 'yes' : 'no'
+            );
+
+            // Dump settings
+            $this->output->writeln('');
+            $this->displaySection('Dump settings');
+            foreach ($config->getDumpSettings() as $name => $value) {
+                $this->displaySectionItem($name, $value);
+            }
+
+            $this->output->writeln('');
+            $this->displaySection('Dump progress');
+
+            // Configure and start the progress bar
+            $this->progressBar->setFormat(
+                ' %current%/%max% [%bar%] %percent:3s%% - %title% - %elapsed:6s% - %memory:6s%'
+            );
+            $this->progressBar->setMaxSteps($this->getMaxSteps($config, $database->getMetadata()));
+            $this->progressBar->setMessage('<info>Starting dump</info>', 'title');
+            $this->progressBar->start();
+
+            // Set the hook that will update the bar during the dump creation
+            $event->getDumper()->setInfoHook($this->getDumpInfoHook());
+        };
+    }
+
+    /**
+     * Get the listener that will be triggered when a dump is finished.
+     */
+    private function getDumpFinishedListener(): callable
+    {
+        return function (): void {
+            if ($this->lastTableInfo) {
+                // Display information of the last table that was dumped
+                $this->updateProgressBarMessage($this->lastTableInfo);
+            }
+
+            $this->progressBar->finish();
+            $this->output->writeln('');
+        };
+    }
+
+    /**
+     * Get the hook that will be triggered when an object is being dumped.
+     */
+    private function getDumpInfoHook(): callable
+    {
+        return function (string $object, array $info): void {
+            if ($object !== 'table') {
+                // The max steps of the progress bar only include tables
+                return;
+            }
+
+            if ($info['completed']) {
+                $this->lastTableInfo = $info;
+                return;
+            }
+
+            $this->updateProgressBarMessage($info);
+
+            $info['rowCount'] === 0
+                ? $this->progressBar->advance() // new table
+                : $this->progressBar->setProgress($this->progressBar->getProgress()); // refresh current table progress
+        };
+    }
+
+    /**
+     * Display a section.
+     */
+    private function displaySection(string $name): void
+    {
+        $this->output->writeln(sprintf('<comment>%s</comment>', $name));
+    }
+
+    /**
+     * Display a section item.
+     */
+    private function displaySectionItem(string $name, mixed $value): void
+    {
+        $this->output->writeln(sprintf('  - %s: <info>%s</info>', $name, $this->formatValue($value)));
+    }
+
+    /**
+     * Update the progress bar message.
+     */
+    private function updateProgressBarMessage(array $tableInfo): void
+    {
+        $message = sprintf('<info>%s</info> (%s)', $tableInfo['name'], $this->formatRowCount($tableInfo['rowCount']));
+        $this->progressBar->setMessage($message, 'title');
+    }
+
+    /**
+     * Get max number of steps of the progress bar.
+     */
+    private function getMaxSteps(DumperConfig $config, MetadataInterface $metadata): int
+    {
+        $includedTables = $config->getTablesWhitelist() ?: $metadata->getTableNames();
+        $excludedTables = $config->getTablesBlacklist();
+
+        return count(array_diff($includedTables, $excludedTables));
+    }
+
+    /**
+     * Format a value for console output.
+     */
+    private function formatValue(mixed $value): string
+    {
+        if (is_bool($value)) {
+            return $value ? 'true' : 'false';
+        }
+
+        if (is_scalar($value)) {
+            return (string) $value;
+        }
+
+        return json_encode($value, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    }
+
+    /**
+     * Format the row count.
+     */
+    private function formatRowCount(int $rowCount): string
+    {
+        return $rowCount > 1 ? sprintf('%d rows', $rowCount) : sprintf('%d row', $rowCount);
+    }
+}

src/Dumper/Event/DumpEvent.php

@@ -39,15 +39,15 @@ public function getDatabase(): Database
     }
 
     /**
-     * Get the dump context.
+     * Get the dumper.
      */
     public function getDumper(): Mysqldump
     {
         return $this->dumper;
     }
 
     /**
-     * Get the context.
+     * Get the dump context.
      */
     public function getContext(): array
     {

src/Dumper/Event/DumpFinishedEvent.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Smile\GdprDump\Dumper\Event;
+
+use Smile\GdprDump\Dumper\Config\DumperConfig;
+use Symfony\Contracts\EventDispatcher\Event;
+
+/**
+ * Event dispatched after a dump creation.
+ */
+class DumpFinishedEvent extends Event
+{
+    public function __construct(private DumperConfig $config)
+    {
+    }
+
+    /**
+     * Get the dumper config.
+     */
+    public function getConfig(): DumperConfig
+    {
+        return $this->config;
+    }
+}

src/Dumper/MysqlDumper.php

@@ -10,12 +10,15 @@
 use Smile\GdprDump\Dumper\Config\ConfigProcessor;
 use Smile\GdprDump\Dumper\Config\DumperConfig;
 use Smile\GdprDump\Dumper\Event\DumpEvent;
-use Symfony\Component\EventDispatcher\EventDispatcher;
+use Smile\GdprDump\Dumper\Event\DumpFinishedEvent;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 class MysqlDumper implements DumperInterface
 {
-    public function __construct(private DatabaseFactory $databaseFactory, private EventDispatcher $eventDispatcher)
-    {
+    public function __construct(
+        private DatabaseFactory $databaseFactory,
+        private EventDispatcherInterface $eventDispatcher
+    ) {
     }
 
     /**
@@ -49,15 +52,15 @@ public function dump(ConfigInterface $config): void
             $database->getConnectionParams()->get('driverOptions', [])
         );
 
-        $event = new DumpEvent($dumper, $database, $config, $context);
-        $this->eventDispatcher->dispatch($event);
+        $this->eventDispatcher->dispatch(new DumpEvent($dumper, $database, $config, $context));
 
         // Close the Doctrine connection before proceeding to the dump creation (MySQLDump-PHP uses its own connection)
         $database->getConnection()->close();
 
         // Create the dump
         $output = $config->getDumpOutput();
         $dumper->start($output);
+        $this->eventDispatcher->dispatch(new DumpFinishedEvent($config));
     }
 
     /**