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<?php
declare(strict_types=1);
namespace Nsfisis\Albatross;
use Nsfisis\Albatross\Database\Connection;
use Nsfisis\Albatross\Models\AggregatedExecutionStatus;
use Nsfisis\Albatross\Models\Answer;
use Nsfisis\Albatross\Models\ExecutionStatus;
use Nsfisis\Albatross\Models\TestcaseExecution;
use Nsfisis\Albatross\Repositories\AnswerRepository;
use Nsfisis\Albatross\Repositories\TestcaseExecutionRepository;
use Nsfisis\Albatross\Repositories\TestcaseRepository;
use Nsfisis\Albatross\SandboxExec\ExecutionResult;
use Nsfisis\Albatross\SandboxExec\ExecutorClient;
final class JobWorker
{
private Connection $conn;
private AnswerRepository $answerRepo;
private TestcaseRepository $testcaseRepo;
private TestcaseExecutionRepository $testcaseExecutionRepo;
private ExecutorClient $executorClient;
public function __construct(
Config $config,
) {
$this->conn = new Connection(
driver: 'pgsql',
host: $config->dbHost,
port: $config->dbPort,
name: $config->dbName,
user: $config->dbUser,
password: $config->dbPassword,
max_tries: 10,
sleep_sec: 3,
);
$this->answerRepo = new AnswerRepository($this->conn);
$this->testcaseRepo = new TestcaseRepository($this->conn);
$this->testcaseExecutionRepo = new TestcaseExecutionRepository($this->conn);
$this->executorClient = new ExecutorClient(
'http://albatross-sandbox-exec:8888',
timeoutMsec: 10 * 1000,
);
}
public function run(): void
{
// @phpstan-ignore-next-line
while (true) {
$task = $this->tryGetNextTask();
if (isset($task)) {
$this->process($task);
} else {
$this->sleep();
}
}
}
private function process(Answer|TestcaseExecution $task): void
{
if ($task instanceof Answer) {
$this->updateAnswerAggregatedExecutionStatus($task, null);
} else {
$this->executeTestcase($task);
}
}
private function tryGetNextTask(): Answer|TestcaseExecution|null
{
$answer = $this->answerRepo->tryGetNextUpdateNeededAnswer();
if ($answer !== null) {
return $answer;
}
$ex = $this->testcaseExecutionRepo->tryGetNextPendingTestcaseExecution();
return $ex;
}
/**
* @param ?array{int, ExecutionStatus} $statusUpdate
*/
private function updateAnswerAggregatedExecutionStatus(
Answer $answer,
?array $statusUpdate,
): void {
$statuses = $this->testcaseExecutionRepo->getStatuses($answer->answer_id);
if ($statusUpdate !== null) {
[$updatedExId, $newStatus] = $statusUpdate;
$statuses[$updatedExId] = $newStatus;
}
$pendingOrRunningCount = 0;
$acCount = 0;
foreach ($statuses as $ex_id => $status) {
match ($status) {
ExecutionStatus::AC => $acCount++,
ExecutionStatus::Pending, ExecutionStatus::Running => $pendingOrRunningCount++,
default => null,
};
}
$aggregatedStatus = match (true) {
$acCount === count($statuses) => AggregatedExecutionStatus::OK,
$pendingOrRunningCount !== 0 => AggregatedExecutionStatus::Pending,
default => AggregatedExecutionStatus::Failed,
};
$this->answerRepo->updateExecutionStatus($answer->answer_id, $aggregatedStatus);
}
private function executeTestcase(TestcaseExecution $ex): void
{
$answer = $this->answerRepo->findById($ex->answer_id);
if ($answer === null) {
$this->testcaseExecutionRepo->update(
$ex->testcase_execution_id,
ExecutionStatus::IE,
'',
'Failed to get the corresponding answer',
);
return;
}
$testcase = $this->testcaseRepo->findByQuizIdAndTestcaseId(
$answer->quiz_id,
$ex->testcase_id,
);
if ($testcase === null) {
$this->testcaseExecutionRepo->update(
$ex->testcase_execution_id,
ExecutionStatus::IE,
'',
'Failed to get the corresponding testcase',
);
return;
}
$result = $this->executeCode($answer->code, $testcase->input);
if ($result->status === ExecutionStatus::AC) {
$status = self::verifyResult($testcase->expected_result, $result->stdout)
? ExecutionStatus::AC
: ExecutionStatus::WA;
} else {
$status = $result->status;
}
$this->conn->transaction(function () use ($ex, $status, $result, $answer) {
$this->updateAnswerAggregatedExecutionStatus(
$answer,
[$ex->testcase_execution_id, $status],
);
$this->testcaseExecutionRepo->update(
$ex->testcase_execution_id,
$status,
$result->stdout,
$result->stderr,
);
});
}
private function executeCode(string $code, string $input): ExecutionResult
{
return $this->executorClient->execute(
code: Answer::normalizeCode($code),
input: self::normalizeInput($input),
);
}
private function sleep(): void
{
sleep(1);
}
private static function verifyResult(string $expected, string $actual): bool
{
return self::normalizeOutput($expected) === self::normalizeOutput($actual);
}
private static function normalizeInput(string $s): string
{
return trim(str_replace(["\r\n", "\r"], "\n", $s)) . "\n";
}
private static function normalizeOutput(string $s): string
{
return trim(str_replace(["\r\n", "\r"], "\n", $s));
}
}
|
