Symfony Process Component mysqldump gzip - symfony

Question

I'm trying to figure out how to add pipe with gzip compression to the mysqldump command using Symfony Process Component. What I have, and what doesn't seem to work is:
$date = Carbon::now();
$fileName = $date->format('Y-m-d_H-i-s').'.sql';
$command = [
$this->mysqldumpPath,
'--add-drop-table',
'--skip-comments',
'--default-character-set=utf8mb4',
$this->ignoreTables(),
'--user='.$this->dbConfig['username'],
'--password='.$this->dbConfig['password'],
$this->dbConfig['database'],
];
if ($this->compress) {
$command[] = '| gzip -9';
$fileName = $fileName.'.gz';
}
$file = $this->backupPath($fileName);
$process = new Process(array_merge(
$command,
['--result-file='.$file]
));
$process->run();
The error I'm getting is
mysqldump: Couldn't find table: "| gzip -9"
The ignoreTables() method
private function ignoreTables(): ?string
{
if (empty($this->ignoreTables)) {
return null;
}
return collect($this->ignoreTables)->map(
fn(string $table) => sprintf(
'--ignore-table=%s.%s',
$this->dbConfig['database'],
$table
)
)->implode(' ');
}
Any idea how I can pass piped gzip flag to the command?

Answer 1

You can still build your command as a string and run it in a shell with Process::fromShellCommandline.
I think your command won't work as written, though, so I'm making the changes I think are necessary (you can also clean this up and not use arrays to build the command).
Main:
$date = Carbon::now();
$fileName = $date->format('Y-m-d_H-i-s').'.sql';
$file = $this->backupPath($fileName);
$command = [
$this->mysqldumpPath,
'--add-drop-table',
'--skip-comments',
'--default-character-set=utf8mb4',
'--user="${:USER}"',
'--password="${:PASSWORD}"',
'"${:DATABASE}"',
];
$command = array_merge($command, $this->getIgnoredTablesArguments());
if ($this->compress) {
$command[] = ' | gzip -9 > "${:OUTPUT_FILE}"';
$file .= '.gz';
} else {
$command[] = '--result-file="${:OUTPUT_FILE}"';
}
$process = Process::fromShellCommandline(implode(' ', $command));
$parameters = [
'USER' => $this->dbConfig['username'],
'PASSWORD' => $this->dbConfig['password'],
'DATABASE' => $this->dbConfig['database'],
'OUTPUT_FILE' => $file,
];
$parameters = array_merge($parameters, $this->getIgnoredTablesParameters());
$process->run(null, $parameters);
Helper methods:
private function ignoreTables(): array
{
return collect($this->ignoreTables)->map(
fn(string $table) => sprintf(
'%s.%s',
$this->dbConfig['database'],
$table
)
);
}
private function getIgnoredTablesArguments(): array
{
$arguments = [];
foreach ($this->ignoreTables as $k => $v) {
$argName = sprintf('${:IGNORE_%s}', $k);
$arguments[] = sprintf('--ignore-table="%s"', $argName);
}
return $arguments;
}
private function getIgnoredTablesParameters(): array
{
$envs = [];
foreach ($this->ignoreTables() as $k => $v) {
$argName = sprintf('IGNORE_%s', $k);
$envs = array_merge($envs, [$argName => $v]);
}
return $envs;
}