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Added possibility to set max length for level name in LineFormatter #1850

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Added possibility to set max length for level name in LineFormatter #1850

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10 changes: 9 additions & 1 deletion src/Monolog/Formatter/LineFormatter.php
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Original file line number Diff line number Diff line change
Expand Up @@ -31,20 +31,23 @@ class LineFormatter extends NormalizerFormatter
protected bool $allowInlineLineBreaks;
protected bool $ignoreEmptyContextAndExtra;
protected bool $includeStacktraces;
protected ?int $maxLevelNameLength = null;
protected Closure|null $stacktracesParser = null;

/**
* @param string|null $format The format of the message
* @param string|null $dateFormat The format of the timestamp: one supported by DateTime::format
* @param bool $allowInlineLineBreaks Whether to allow inline line breaks in log entries
* @param int|null $maxLevelNameLength Maximum characters for the level name. Set null for infinite length (default)
*
* @throws \RuntimeException If the function json_encode does not exist
*/
public function __construct(?string $format = null, ?string $dateFormat = null, bool $allowInlineLineBreaks = false, bool $ignoreEmptyContextAndExtra = false, bool $includeStacktraces = false)
public function __construct(?string $format = null, ?string $dateFormat = null, bool $allowInlineLineBreaks = false, bool $ignoreEmptyContextAndExtra = false, bool $includeStacktraces = false, ?int $maxLevelNameLength = null)
{
$this->format = $format === null ? static::SIMPLE_FORMAT : $format;
$this->allowInlineLineBreaks = $allowInlineLineBreaks;
$this->ignoreEmptyContextAndExtra = $ignoreEmptyContextAndExtra;
$this->maxLevelNameLength = $maxLevelNameLength;
$this->includeStacktraces($includeStacktraces);
parent::__construct($dateFormat);
}
Expand Down Expand Up @@ -119,6 +122,11 @@ public function format(LogRecord $record): string

foreach ($vars as $var => $val) {
if (false !== strpos($output, '%'.$var.'%')) {

if ($var === 'level_name' && $this->maxLevelNameLength !== null) {
$val = substr($val, 0, $this->maxLevelNameLength);
}

$output = str_replace('%'.$var.'%', $this->stringify($val), $output);
}
}
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34 changes: 34 additions & 0 deletions tests/Monolog/Formatter/LineFormatterTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -274,6 +274,40 @@ public function testFormatShouldNotStripInlineLineBreaksWhenFlagIsSet()

$this->assertMatchesRegularExpression('/foo\nbar/', $message);
}

/**
* @dataProvider providerMaxLevelNameLength
*/
public function testMaxLevelNameLength(?int $maxLength, Level $logLevel, string $expectedLevelName): void
{
$formatter = new LineFormatter(maxLevelNameLength: $maxLength);
$message = $formatter->format($this->getRecord(message: "foo\nbar", level: $logLevel));

$this->assertStringContainsString("test.$expectedLevelName:", $message);
}

public static function providerMaxLevelNameLength(): array
{
return [
'info_no_max_length' => [
'max_length' => null,
'level' => Level::Info,
'expected_level_name' => 'INFO',
],

'error_max_length_3' => [
'max_length' => 3,
'level' => Level::Error,
'expected_level_name' => 'ERR',
],

'debug_max_length_2' => [
'max_length' => 2,
'level' => Level::Debug,
'expected_level_name' => 'DE',
],
];
}
}

class TestFoo
Expand Down