For export large data need call flush() in StreamedResponse.
its allow clear buffer and not use extra memory.
Todo as feature of framework?
My solution:
# config/services.yml
services:
app.export.writer.csv:
class: App\Writer\FlushWriterDecorator
decorates: sonata.exporter.writer.csv
app.export.writer.json:
class: App\Writer\FlushWriterDecorator
decorates: sonata.exporter.writer.json
app.export.writer.xml:
class: App\Writer\FlushWriterDecorator
decorates: sonata.exporter.writer.xml
app.export.writer.xls:
class: App\Writer\FlushWriterDecorator
decorates: sonata.exporter.writer.xls<?php
declare(strict_types=1);
namespace App\Writer;
use Sonata\Exporter\Writer\TypedWriterInterface;
class FlushWriterDecorator implements TypedWriterInterface
{
private const FLUSH_EVERY = 1000;
private int $position;
private TypedWriterInterface $writer;
public function __construct(TypedWriterInterface $writer)
{
$this->writer = $writer;
}
public function open(): void
{
$this->writer->open();
$this->position = 0;
}
public function write(array $data): void
{
$this->writer->write($data);
$this->position++;
if (0 === ($this->position % self::FLUSH_EVERY)) {
flush();
}
}
public function close(): void
{
$this->writer->close();
}
public function getDefaultMimeType(): string
{
return $this->writer->getDefaultMimeType();
}
public function getFormat(): string
{
return $this->writer->getFormat();
}
}
For export large data need call flush() in StreamedResponse.
its allow clear buffer and not use extra memory.
Todo as feature of framework?
My solution: