Symfony/Console: How to use multiple progress bars?

Question

I have a command for Symfony/Console which downloads several files at once using Guzzle Pool. I already have Guzzle reporting the download progress for each file, that works fine.

Now I'd like to improve it using the ProgressBar helper from Symfony/Console.The problem is that all examples I found for the ProgressBar only use a single progress bar. I need several independent progress bars - one for each of the downloads. Can you give me some hint how to achieve that?

Kessinger

FYI when using console output sections like the below answers do, it'll then send the progress bars to stdout instead of stderr. I haven't found a clean way of sending progress bar sections to stderr and regular log messages to stdout – Critic

Answer 1

I found something here: [Console] A better progress bar #10356

use Symfony\Component\Console\Helper\ProgressBar;
use Symfony\Component\Console\Output\ConsoleOutput;

$output = new ConsoleOutput();

$bar1 = new ProgressBar($output, 10);
$bar2 = new ProgressBar($output, 20);
$bar2->setProgressCharacter('#');
$bar1->start();
print "\n";
$bar2->start();

for ($i = 1; $i <= 20; $i++) {
    // up one line
    $output->write("\033[1A");
    usleep(100000);
    if ($i <= 10) {
        $bar1->advance();
    }
    print "\n";
    $bar2->advance();
}

Effect:

You must move the console cursor to the appropriate line (up and down) before updating the bar. But it works. I confirm.

Victuals

Answer 2

With Symfony 4.1 this is supported without manual cursor-control, see https://symfony.com/doc/current/components/console/helpers/progressbar.html#console-multiple-progress-bars:

$section1 = $output->section();
$section2 = $output->section();

$progress1 = new ProgressBar($section1);
$progress2 = new ProgressBar($section2);

$progress1->start(100);
$progress2->start(100);

$i = 0;
while (++$i < 100) {
    $progress1->advance();

    if ($i % 2 === 0) {
         $progress2->advance(4);
    }

    usleep(50000);
}

Ardel

Answer 3

Laravel 5.6 / linux

use Symfony\Component\Console\Helper\ProgressBar;
use Symfony\Component\Console\Output\ConsoleOutput;

$output = new ConsoleOutput();

$bar1 = new ProgressBar($output->section(), 10);
$bar2 = new ProgressBar($output->section(), 20);
$bar2->setProgressCharacter('#');
$bar1->start();
print "\n";
$bar2->start();

for ($i = 1; $i <= 20; $i++) {
    // up one line
    $output->write("\033[1A");
    usleep(100000);
    if ($i <= 10) {
        $bar1->advance();
    }
    print "\n";
    $bar2->advance();
}

Molasses

Answer 4

In Laravel, you can do this to create multiple progress bars.

    use Symfony\Component\Console\Output\ConsoleOutput;
    use Symfony\Component\Console\Helper\ProgressBar;


    $output = new ConsoleOutput();
    
    $totalUsers->chunk(100, function($users) use($output) {
        $bar = new ProgressBar($output, count($users));
        $bar->start();

        $users->each(function($user) use($bar) {
            $this->performTask($user);
            $bar->advance();
        });

        $bar->finish();
        print "\n";
    });

Neidaneidhardt