Container logs

<?php

require __DIR__ . '/vendor/autoload.php';

use Docker\Docker;

$docker = Docker::create();
$logs = $docker->containerLogs('my-container', [
    'stdout' => true,
    'stderr' => true,
    'follow' => true,
]);

$logs->onStdout(function (string $chunk): void {
    echo $chunk;
});
$logs->onStderr(function (string $chunk): void {
    fwrite(STDERR, $chunk);
});
$logs->wait();

$recent = $docker->containerLogs('my-container', [
    'stdout' => true,
    'stderr' => true,
    'follow' => false,
    'tail' => '100',
    'timestamps' => true,
    'since' => time() - 300,
]);
$recent->onStdout(function (string $chunk): void { echo $chunk; });
$recent->onStderr(function (string $chunk): void { fwrite(STDERR, $chunk); });
$recent->wait();

$pending = '';
$logs = $docker->containerLogs('my-container', ['stdout' => true, 'tail' => '100']);
$logs->onStdout(function (string $chunk) use (&$pending): void {
    $pending .= $chunk;
    while (($newline = strpos($pending, "\n")) !== false) {
        $line = substr($pending, 0, $newline);
        $pending = substr($pending, $newline + 1);
        printf("line: %s\n", rtrim($line, "\r"));
    }
    if (strlen($pending) > 1024 * 1024) {
        throw new RuntimeException('Output line exceeded the buffer limit');
    }
});
$logs->wait();
if ($pending !== '') {
    printf("last line: %s\n", $pending);
}