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<?php
namespace ProcessMaker\Services;
use Illuminate\Http\Client\ConnectionException;
use Illuminate\Http\Client\RequestException;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use ProcessMaker\Events\ScriptResponseEvent;
use ProcessMaker\Exception\ScriptException;
use ProcessMaker\Jobs\CompleteActivity;
use ProcessMaker\Models\Process as Definitions;
use ProcessMaker\Models\ProcessRequest;
use ProcessMaker\Models\ProcessRequestToken;
use ProcessMaker\Models\Script;
use ProcessMaker\Models\ScriptExecutor;
use ProcessMaker\Models\User;
use Ramsey\Uuid\Uuid;
class ScriptMicroserviceService
{
private $client;
private $tenantChecked = false;
private function client()
{
if (!$this->client) {
$this->client = Http::withOptions([
'verify' => !App::environment('local'),
])->baseUrl(config('script-runner-microservice.base_url'))
->withToken($this->getAccessToken())
->accept('application/json')
->contentType('application/json')
->throw();
}
return $this->client;
}
private function checkTenant(): void
{
if ($this->tenantChecked) {
return;
}
$instanceUuid = $this->getInstanceUuid();
$url = '/tenants/' . $instanceUuid;
$client = $this->client();
try {
$response = $client->get($url);
// Tenant exists, we're good
} catch (RequestException $e) {
// If we get a 404, create the tenant
if ($e->response && $e->response->status() === 404) {
Log::debug('Tenant not found, creating.', ['instanceUuid' => $instanceUuid]);
$client->post('/tenants', [
'name' => config('app.instance'),
'id' => $instanceUuid,
]);
} else {
// Re-throw if it's not a 404
Log::error('Error checking tenant', ['error' => $e->getMessage()]);
throw $e;
}
}
$this->tenantChecked = true;
}
/**
* @throws RequestException
* @throws ConnectionException
*/
public function createCustomExecutor(ScriptExecutor $scriptExecutor)
{
$url = '/custom/' . $this->getInstanceUuid() . '/scripts';
Log::debug('Creating custom script executor.', ['url' => $url]);
$payload = [
'id' => $scriptExecutor->uuid,
'name' => $scriptExecutor->title,
'description' => $scriptExecutor->description,
'language' => strtolower($scriptExecutor->language),
'version' => config('script-runner-microservice.version'),
'config' => $scriptExecutor->config,
];
Log::debug('Payload: ', $payload);
$this->checkTenant();
$response = $this->client()->post($url, $payload);
$jsonResponse = $response->json();
Log::debug('Response', ['response' => $jsonResponse]);
return $jsonResponse;
}
/**
* @throws RequestException
* @throws ConnectionException
*/
public function updateCustomExecutor(ScriptExecutor $scriptExecutor)
{
$this->checkTenant();
$url = '/custom/scripts/' . $scriptExecutor->uuid;
Log::debug('Updating custom script executor.', ['url' => $url]);
$payload = [
'name' => $scriptExecutor->title,
'description' => $scriptExecutor->description,
'language' => strtolower($scriptExecutor->language),
'version' => config('script-runner-microservice.version'),
'config' => $scriptExecutor->config,
];
Log::debug('Payload: ', $payload);
try {
$response = $this->client()
->put($url, $payload);
$jsonResponse = $response->json();
Log::debug('Response', ['response' => $jsonResponse]);
return $jsonResponse;
} catch (RequestException $e) {
// If we get a 404, create the executor instead
if ($e->response && $e->response->status() === 404) {
Log::debug('Executor not found (404), creating instead...');
return $this->createCustomExecutor($scriptExecutor);
} else {
// Re-throw if it's not a 404
throw $e;
}
}
}
/**
* @throws ConnectionException
*/
public function deleteCustomExecutor($scriptExecutorUUID)
{
$url = '/custom/scripts/' . $scriptExecutorUUID;
Log::debug('Deleting custom script executor.', ['url' => $url]);
$response = $this->client()->delete($url);
$jsonResponse = $response->json();
Log::debug('Response', ['response' => $jsonResponse]);
return $jsonResponse;
}
/**
* @throws ConnectionException
*/
public function getAccessToken(): string
{
if (Cache::has('keycloak.access_token')) {
return Cache::get('keycloak.access_token');
}
$response = Http::asForm()->post(config('script-runner-microservice.keycloak.base_url') ?? '', [
'grant_type' => 'password',
'client_id' => config('script-runner-microservice.keycloak.client_id'),
'client_secret' => config('script-runner-microservice.keycloak.client_secret'),
'username' => config('script-runner-microservice.keycloak.username'),
'password' => config('script-runner-microservice.keycloak.password'),
]);
$responseJson = $response->json();
if ($response->successful() && isset($responseJson['access_token'])) {
// store with a small buffer before expiration
Cache::put('keycloak.access_token', $responseJson['access_token'], max(60, ($responseJson['expires_in'] ?? 1800) - 60));
return $responseJson['access_token'];
}
Log::error('Failed to obtain access token', ['status' => $response->status(), 'body' => $responseJson]);
throw new \RuntimeException('Unable to obtain access token from Keycloak');
}
/**
* @throws ConnectionException
*/
public function getScriptRunner(string $language, string $executorUuid, bool $custom = false): array|null
{
$cacheKey = $custom
? ('script-runner-microservice.custom-script-runner.' . $executorUuid)
: ('script-runner-microservice.script-runner.' . $language);
if (Cache::has($cacheKey)) {
Log::debug('Cache hit for script runner', ['cacheKey' => $cacheKey]);
return Cache::get($cacheKey);
}
$uri = !$custom ? '/scripts' : '/custom/' . $this->getInstanceUuid() . '/scripts';
$result = $this->client()
->get($uri)
->collect()
->filter(function ($item) use ($language, $executorUuid, $custom) {
if (!$custom) {
return isset($item['language']) && $item['language'] === $language;
}
return isset($item['language'], $item['id']) && $item['language'] === $language && $item['id'] === $executorUuid;
})->first();
if (!empty($result)) Cache::put($cacheKey, $result, now()->addHour());
return $result;
}
/**
* @throws ConnectionException
*/
public function sendScriptPayload($payload)
{
$uri = '/requests/create';
// Set a theoretical maximum timeout of 1 day (86400 seconds)
// since the laravel client must have a timeout set.
// The actual script timeout will be handled by the microservice.
$clientTimeout = 86400;
return $this->client()->timeout($clientTimeout)
->post($uri, $payload);
}
public function handle(Request $request): void
{
$response = $request->all();
Log::debug('Response microservice executor: ' . print_r($response, true));
// If the call is from preview
if (!empty($response['metadata']['nonce'])) {
$formattedResponse = $this->formatPreviewResponse($response);
event(new ScriptResponseEvent(
User::find($response['metadata']['current_user']),
$formattedResponse['status'],
$formattedResponse['output'],
null,
$response['metadata']['nonce']));
}
if (!empty($response['metadata']['script_task'])) {
$script = Script::find($response['metadata']['script_task']['script_id']);
$definitions = Definitions::find($response['metadata']['script_task']['definition_id']);
$instance = ProcessRequest::find($response['metadata']['script_task']['instance_id']);
$token = ProcessRequestToken::find($response['metadata']['script_task']['token_id']);
if ($response['status'] === 'success') {
CompleteActivity::dispatch($definitions, $instance, $token, $response['output'])->onQueue('bpmn');
}
}
}
/**
* Format preview response data
*
* @param array $response
* @return array{status: int, output: array}
*/
private function formatPreviewResponse(array $response): array
{
// Simple status determination: success = 200, others = 500
$status = $response['status'] === 'success' ? 200 : 500;
return [
'status' => $status,
'output' => $this->formatPreviewOutput($response),
];
}
/**
* Format preview output data
*
* @param array $response
* @return array
*/
private function formatPreviewOutput(array $response): array
{
$output = $response;
if (($response['status'] ?? '') === 'success') {
$output = ['output' => $response['output']];
} elseif ($response['status'] === 'error') {
$output = [
'exception' => $response['exception'] ?? ScriptException::class,
'message' => $response['error'],
];
}
return $output;
}
public function getInstanceUuid(): string
{
return Uuid::uuid5(
Uuid::fromString('817d1d4c-e05c-4244-bf36-445e117d431a'),
config('app.url')
)->toString();
}
}