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<?php |
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/* |
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* This file is part of dispositif/wikibot application (@github) |
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* 2019-2023 © Philippe M./Irønie <[email protected]> |
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* For the full copyright and MIT license information, view the license file. |
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*/ |
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declare(strict_types=1); |
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namespace App\Infrastructure\Monitor; |
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use Exception; |
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use SQLite3; |
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/** |
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* SQLite3 base: stats.db |
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* tables: tagnum, tagnum_daily, tagnum_monthly |
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*/ |
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class Stats |
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{ |
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protected const DEFAULT_FILEPATH = __DIR__ . '/../../../log/stats.db'; |
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protected const MAX_TAG_LENGTH = 100; |
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protected SQLite3 $db; |
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public function __construct() |
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{ |
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if (!class_exists('SQLite3')) { |
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throw new Exception('Stats ERROR : SQLite 3 NOT supported.'); |
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} |
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$this->db = new SQLite3(getenv('STATS_FILEPATH') ?: self::DEFAULT_FILEPATH); |
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$this->createTableIfNotExists(); |
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} |
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protected function createTableIfNotExists(): bool |
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{ |
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// note : Sqlite VARCHAR(X) do not truncate to the supposed X max chars. VARCHAR is TEXT. |
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try { |
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$this->db->exec('CREATE TABLE if not exists tagnum_monthly ( |
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tag TEXT NOT NULL PRIMARY KEY, |
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num int(11) NOT NULL DEFAULT 1 |
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)'); |
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$this->db->exec('CREATE TABLE if not exists tagnum_daily ( |
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tag TEXT NOT NULL PRIMARY KEY, |
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num int(11) NOT NULL DEFAULT 1 |
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)'); |
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return $this->db->exec('CREATE TABLE if not exists tagnum ( |
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tag TEXT NOT NULL PRIMARY KEY, |
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num int(11) NOT NULL DEFAULT 1 |
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)'); |
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} catch (Exception $e) { |
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return false; |
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} |
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} |
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public function increment(string $tag): bool |
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{ |
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$tag = $this->formatTag($tag); |
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$this->upsertTag(sprintf('%s.%s', date('Ymd'), $tag), 'tagnum_daily'); |
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$this->upsertTag(sprintf('%s.%s', date('Ym'), $tag), 'tagnum_monthly'); |
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return $this->upsertTag($tag); |
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} |
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private function formatTag(string $tag) |
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{ |
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return mb_substr($tag, 0, self::MAX_TAG_LENGTH); |
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} |
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protected function upsertTag(string $tag, string $table = 'tagnum'): bool |
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{ |
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// `num` default value is 1 so insert is enough to set num=1 |
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try { |
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// upsert :) |
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return $this->sqliteExecWriteOrWait( |
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'INSERT INTO ' . $table . ' (tag) VALUES("' . $tag . '") ON CONFLICT(tag) DO UPDATE SET num=num+1' |
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); |
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} catch (Exception $e) { |
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return false; |
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} |
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} |
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/** |
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* Sqlite do not allow concurrent write from different process. |
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* So wait a little and retry. |
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*/ |
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protected function sqliteExecWriteOrWait(string $query, int $maxRetry = 10): bool |
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{ |
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$retry = 0; |
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while ($retry < $maxRetry) { |
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$success = $this->db->exec($query); |
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if ($success) { |
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return true; |
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} |
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echo "DEBUG: Sqlite retry : wait 100000 µs...\n"; // todo remove |
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$retry++; |
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usleep(100000); // 100000 µs = 0.1 s |
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} |
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return false; |
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} |
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public function set(string $tag, int $num): bool |
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{ |
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$tag = $this->formatTag($tag); |
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try { |
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return $this->sqliteExecWriteOrWait( |
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'INSERT OR REPLACE INTO tagnum (tag,num) VALUES("' . $tag . '", ' . $num . ')' |
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); |
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} catch (Exception $e) { |
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return false; |
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} |
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} |
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public function decrement(string $tag): bool |
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{ |
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$tag = $this->formatTag($tag); |
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try { |
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return $this->sqliteExecWriteOrWait( |
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'INSERT INTO tagnum (tag) VALUES("' . $tag . '") ON CONFLICT(tag) DO UPDATE SET num=num-1' |
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); |
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} catch (Exception $e) { |
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return false; |
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} |
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} |
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public function select(string $tag): ?int |
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{ |
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$tag = $this->formatTag($tag); |
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try { |
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$stmt = $this->db->prepare('SELECT tag,num FROM tagnum WHERE tag LIKE :tag'); |
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$stmt->bindValue(':tag', $tag, SQLITE3_TEXT); |
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$result = $stmt->execute(); |
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return $result ? $result->fetchArray(SQLITE3_ASSOC)['num'] : null; |
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} catch (Exception $e) { |
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return null; |
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} |
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} |
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} |
Dispositif /
Wikibot
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