392 lines
10 KiB
PHP
392 lines
10 KiB
PHP
<?php
|
|
|
|
namespace danog\MadelineProto\Db;
|
|
|
|
use Amp\Postgres\Pool;
|
|
use Amp\Producer;
|
|
use Amp\Promise;
|
|
use Amp\Sql\ResultSet;
|
|
use danog\MadelineProto\Logger;
|
|
use function Amp\call;
|
|
|
|
class PostgresArray implements DbArray
|
|
{
|
|
use ArrayCacheTrait;
|
|
|
|
private string $table;
|
|
private array $settings;
|
|
private Pool $db;
|
|
|
|
/**
|
|
* Set value for an offset.
|
|
*
|
|
* @link https://php.net/manual/en/arrayiterator.offsetset.php
|
|
*
|
|
* @param string $index <p>
|
|
* The index to set for.
|
|
* </p>
|
|
* @param $value
|
|
*
|
|
* @throws \Throwable
|
|
*/
|
|
|
|
public function offsetSet($index, $value): Promise
|
|
{
|
|
if ($this->getCache($index) === $value) {
|
|
return call(fn () =>null);
|
|
}
|
|
|
|
$this->setCache($index, $value);
|
|
|
|
$request = $this->request(
|
|
"
|
|
INSERT INTO \"{$this->table}\"
|
|
(key,value)
|
|
VALUES (:index, :value)
|
|
ON CONFLICT (key) DO UPDATE SET value = :value
|
|
",
|
|
[
|
|
'index' => $index,
|
|
'value' => \serialize($value),
|
|
]
|
|
);
|
|
|
|
//Ensure that cache is synced with latest insert in case of concurrent requests.
|
|
$request->onResolve(fn () => $this->setCache($index, $value));
|
|
|
|
return $request;
|
|
}
|
|
|
|
public static function getDbConnection(array $settings): Pool
|
|
{
|
|
return Postgres::getConnection(
|
|
$settings['host'],
|
|
$settings['port'],
|
|
$settings['user'],
|
|
$settings['password'],
|
|
$settings['database'],
|
|
$settings['max_connections'],
|
|
$settings['idle_timeout']
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Create table for property.
|
|
*
|
|
* @return array|null
|
|
* @throws \Throwable
|
|
*/
|
|
private function prepareTable()
|
|
{
|
|
Logger::log("Creating/checking table {$this->table}", Logger::WARNING);
|
|
|
|
yield $this->request("
|
|
CREATE TABLE IF NOT EXISTS \"{$this->table}\"
|
|
(
|
|
\"key\" VARCHAR(255) NOT NULL,
|
|
\"value\" BYTEA NULL,
|
|
\"ts\" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
|
|
CONSTRAINT \"{$this->table}_pkey\" PRIMARY KEY(\"key\")
|
|
);
|
|
|
|
|
|
|
|
|
|
");
|
|
|
|
yield $this->request("
|
|
DROP TRIGGER IF exists \"{$this->table}_update_ts_trigger\" ON \"{$this->table}\";
|
|
");
|
|
|
|
yield $this->request("
|
|
CREATE TRIGGER \"{$this->table}_update_ts_trigger\" BEFORE UPDATE ON \"{$this->table}\" FOR EACH ROW EXECUTE PROCEDURE update_ts();
|
|
");
|
|
}
|
|
|
|
public function __serialize(): array
|
|
{
|
|
return [
|
|
'table' => $this->table,
|
|
'settings' => $this->settings
|
|
];
|
|
}
|
|
|
|
public function __unserialize($data): void
|
|
{
|
|
foreach ($data as $property => $value) {
|
|
$this->{$property} = $value;
|
|
}
|
|
try {
|
|
$this->db = static::getDbConnection($this->settings);
|
|
} catch (\Throwable $e) {
|
|
Logger::log($e->getMessage(), Logger::ERROR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
* @param DbArray|array|null $value
|
|
* @param string $tablePrefix
|
|
* @param array $settings
|
|
*
|
|
* @return Promise
|
|
*/
|
|
public static function getInstance(string $name, $value = null, string $tablePrefix = '', array $settings = []): Promise
|
|
{
|
|
$tableName = "{$tablePrefix}_{$name}";
|
|
if ($value instanceof self && $value->table === $tableName) {
|
|
$instance = &$value;
|
|
} else {
|
|
$instance = new static();
|
|
$instance->table = $tableName;
|
|
}
|
|
|
|
$instance->settings = $settings;
|
|
$instance->db = static::getDbConnection($settings);
|
|
$instance->ttl = $settings['cache_ttl'] ?? $instance->ttl;
|
|
|
|
$instance->startCacheCleanupLoop();
|
|
|
|
return call(static function () use ($instance, $value) {
|
|
yield from $instance->prepareTable();
|
|
|
|
//Skip migrations if its same object
|
|
if ($instance !== $value) {
|
|
yield from static::renameTmpTable($instance, $value);
|
|
yield from static::migrateDataToDb($instance, $value);
|
|
}
|
|
|
|
return $instance;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param PostgresArray $instance
|
|
* @param DbArray|array|null $value
|
|
*
|
|
* @return \Generator
|
|
*/
|
|
private static function renameTmpTable(PostgresArray $instance, $value): \Generator
|
|
{
|
|
if ($value instanceof static && $value->table) {
|
|
if (
|
|
$value->table !== $instance->table &&
|
|
\mb_strpos($instance->table, 'tmp') !== 0
|
|
) {
|
|
yield from $instance->renameTable($value->table, $instance->table);
|
|
} else {
|
|
$instance->table = $value->table;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param PostgresArray $instance
|
|
* @param DbArray|array|null $value
|
|
*
|
|
* @return \Generator
|
|
* @throws \Throwable
|
|
*/
|
|
private static function migrateDataToDb(PostgresArray $instance, $value): \Generator
|
|
{
|
|
if (!empty($value) && !$value instanceof PostgresArray) {
|
|
Logger::log('Converting database.', Logger::ERROR);
|
|
|
|
if ($value instanceof DbArray) {
|
|
$value = yield $value->getArrayCopy();
|
|
} else {
|
|
$value = (array) $value;
|
|
}
|
|
$counter = 0;
|
|
$total = \count($value);
|
|
foreach ($value as $key => $item) {
|
|
$counter++;
|
|
if ($counter % 500 === 0) {
|
|
yield $instance->offsetSet($key, $item);
|
|
Logger::log("Loading data to table {$instance->table}: $counter/$total", Logger::WARNING);
|
|
} else {
|
|
$instance->offsetSet($key, $item);
|
|
}
|
|
}
|
|
Logger::log('Converting database done.', Logger::ERROR);
|
|
}
|
|
}
|
|
|
|
public function offsetExists($index): bool
|
|
{
|
|
throw new \RuntimeException('Native isset not support promises. Use isset method');
|
|
}
|
|
|
|
/**
|
|
* Check if key isset.
|
|
*
|
|
* @param $key
|
|
*
|
|
* @return Promise<bool> true if the offset exists, otherwise false
|
|
*/
|
|
public function isset($key): Promise
|
|
{
|
|
return call(fn () => yield $this->offsetGet($key) !== null);
|
|
}
|
|
|
|
|
|
public function offsetGet($offset): Promise
|
|
{
|
|
return call(function () use ($offset) {
|
|
if ($cached = $this->getCache($offset)) {
|
|
return $cached;
|
|
}
|
|
|
|
$row = yield $this->request(
|
|
"SELECT value FROM \"{$this->table}\" WHERE key = :index LIMIT 1",
|
|
['index' => $offset]
|
|
);
|
|
|
|
if ($value = $this->getValue($row)) {
|
|
$this->setCache($offset, $value);
|
|
}
|
|
|
|
return $value;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Unset value for an offset.
|
|
*
|
|
* @link https://php.net/manual/en/arrayiterator.offsetunset.php
|
|
*
|
|
* @param string $index <p>
|
|
* The offset to unset.
|
|
* </p>
|
|
*
|
|
* @return Promise
|
|
* @throws \Throwable
|
|
*/
|
|
public function offsetUnset($index): Promise
|
|
{
|
|
$this->unsetCache($index);
|
|
|
|
return $this->request(
|
|
"
|
|
DELETE FROM \"{$this->table}\"
|
|
WHERE key = :index
|
|
",
|
|
['index' => $index]
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Get array copy.
|
|
*
|
|
* @return Promise<array>
|
|
* @throws \Throwable
|
|
*/
|
|
public function getArrayCopy(): Promise
|
|
{
|
|
return call(function () {
|
|
$iterator = $this->getIterator();
|
|
$result = [];
|
|
while (yield $iterator->advance()) {
|
|
[$key, $value] = $iterator->getCurrent();
|
|
$result[$key] = $value;
|
|
}
|
|
return $result;
|
|
});
|
|
}
|
|
|
|
public function getIterator(): Producer
|
|
{
|
|
return new Producer(function (callable $emit) {
|
|
$request = yield $this->db->execute("SELECT key, value FROM \"{$this->table}\"");
|
|
|
|
while (yield $request->advance()) {
|
|
$row = $request->getCurrent();
|
|
yield $emit([$row['key'], $this->getValue($row)]);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Count elements.
|
|
*
|
|
* @link https://php.net/manual/en/arrayiterator.count.php
|
|
* @return Promise<int> The number of elements or public properties in the associated
|
|
* array or object, respectively.
|
|
* @throws \Throwable
|
|
*/
|
|
public function count(): Promise
|
|
{
|
|
return call(function () {
|
|
$row = yield $this->request("SELECT count(key) as count FROM \"{$this->table}\"");
|
|
return $row[0]['count'] ?? 0;
|
|
});
|
|
}
|
|
|
|
private function getValue(array $row)
|
|
{
|
|
if ($row) {
|
|
if (!empty($row[0]['value'])) {
|
|
$row = \reset($row);
|
|
}
|
|
return \unserialize($row['value']);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
private function renameTable(string $from, string $to)
|
|
{
|
|
Logger::log("Renaming table {$from} to {$to}", Logger::WARNING);
|
|
yield $this->request("
|
|
ALTER TABLE \"{$from}\" RENAME TO \"{$to}\";
|
|
");
|
|
|
|
yield $this->request("
|
|
DROP TABLE IF EXISTS \"{$from}\";
|
|
");
|
|
}
|
|
|
|
/**
|
|
* Perform async request to db.
|
|
*
|
|
* @param string $query
|
|
* @param array $params
|
|
*
|
|
* @return Promise
|
|
* @throws \Throwable
|
|
*/
|
|
private function request(string $query, array $params = []): Promise
|
|
{
|
|
return call(function () use ($query, $params) {
|
|
Logger::log([$query, $params], Logger::VERBOSE);
|
|
|
|
if (empty($this->db) || !$this->db->isAlive()) {
|
|
Logger::log('No database connection', Logger::WARNING);
|
|
return [];
|
|
}
|
|
|
|
if (
|
|
!empty($params['index'])
|
|
&& !mb_check_encoding($params['index'], 'UTF-8')
|
|
) {
|
|
$params['index'] = mb_convert_encoding($params['index'], 'UTF-8');
|
|
}
|
|
|
|
try {
|
|
$request = yield $this->db->execute($query, $params);
|
|
} catch (\Throwable $e) {
|
|
Logger::log($e->getMessage(), Logger::ERROR);
|
|
return [];
|
|
}
|
|
|
|
$result = [];
|
|
if ($request instanceof ResultSet) {
|
|
while (yield $request->advance()) {
|
|
$result[] = $request->getCurrent();
|
|
}
|
|
}
|
|
return $result;
|
|
});
|
|
}
|
|
}
|