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| 1 | <?php |
| 2 | |
| 3 | namespace Olz\Apps\Logs\Utils; |
| 4 | |
| 5 | abstract class LogrotateLogsChannel extends BaseLogsChannel { |
| 6 | abstract protected function getLogFileForIndex(int $index): LogFileInterface; |
| 7 | |
| 8 | abstract protected function getIndexForFilePath(string $file_path): int; |
| 9 | |
| 10 | protected function getLineLocationForDateTime( |
| 11 | \DateTime $date_time, |
| 12 | ): LineLocation { |
| 13 | $iso_date_time = $date_time->format('Y-m-d H:i:s'); |
| 14 | $index = -1; |
| 15 | $continue = true; |
| 16 | while ($continue) { |
| 17 | try { |
| 18 | $log_file = $this->getLogFileForIndex($index); |
| 19 | $file_index = $this->getOrCreateIndex($log_file); |
| 20 | if ($iso_date_time >= $file_index['start_date']) { |
| 21 | $continue = false; |
| 22 | } else { |
| 23 | $index++; |
| 24 | } |
| 25 | } catch (\Exception $exc) { |
| 26 | $continue = false; |
| 27 | throw $exc; |
| 28 | } |
| 29 | } |
| 30 | $log_file = $this->getLogFileForIndex($index); |
| 31 | $file_index = $this->getOrCreateIndex($log_file); |
| 32 | $number_of_lines = count($file_index['lines']); |
| 33 | $fp = $log_file->open('r'); |
| 34 | |
| 35 | [$line_number, $cmp] = $this->generalUtils()->binarySearch( |
| 36 | function ($line_number) use ($log_file, $fp, $file_index, $date_time) { |
| 37 | $index = $file_index['lines'][$line_number]; |
| 38 | $log_file->seek($fp, $index); |
| 39 | $line = $log_file->gets($fp); |
| 40 | $date_time_at_index = $this->parseDateTimeOfLine($line ?? ''); |
| 41 | return $date_time <=> $date_time_at_index; |
| 42 | }, |
| 43 | 0, |
| 44 | $number_of_lines - 1, |
| 45 | ); |
| 46 | |
| 47 | $log_file->close($fp); |
| 48 | return new LineLocation($log_file, $line_number, $cmp); |
| 49 | } |
| 50 | |
| 51 | protected function getLogFileBefore(LogFileInterface $log_file): LogFileInterface { |
| 52 | $path = $log_file->getPath(); |
| 53 | $index = $this->getIndexForFilePath($path); |
| 54 | $index_before = $index + 1; |
| 55 | $new_log_file = $this->getLogFileForIndex($index_before); |
| 56 | if (!$new_log_file->exists()) { |
| 57 | throw new \Exception("No such file: {$new_log_file->getPath()}"); |
| 58 | } |
| 59 | return $new_log_file; |
| 60 | } |
| 61 | |
| 62 | protected function getLogFileAfter(LogFileInterface $log_file): LogFileInterface { |
| 63 | $path = $log_file->getPath(); |
| 64 | $index = $this->getIndexForFilePath($path); |
| 65 | $index_after = $index - 1; |
| 66 | $new_log_file = $this->getLogFileForIndex($index_after); |
| 67 | if (!$new_log_file->exists()) { |
| 68 | throw new \Exception("No such file: {$new_log_file->getPath()}"); |
| 69 | } |
| 70 | return $new_log_file; |
| 71 | } |
| 72 | } |