public function __construct($name, $priority, VirtualExecution $execution = NULL, $documentation = NULL)
{
$this->name = (string) $name;
$this->priority = (int) $priority;
$this->executionId = $execution === NULL ? NULL : $execution->getId();
$this->documentation = $documentation === NULL ? NULL : (string) $documentation;
}
public function __construct($signal, UUID $executionId = NULL, array $variables = [], VirtualExecution $sourceExecution = NULL)
{
$this->signal = (string) $signal;
$this->variables = serialize($variables);
$this->executionId = $executionId;
$this->sourceExecutionId = $sourceExecution === NULL ? NULL : $sourceExecution->getId();
}
/**
* {@inheritdoc}
*/
public function interrupt(VirtualExecution $execution, array $transitions = NULL)
{
foreach ($execution->findChildExecutions() as $sub) {
$sub->terminate(false);
}
parent::interrupt($execution, $transitions);
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$engine = $execution->getEngine();
$name = $this->getStringValue($this->name, $execution->getExpressionContext());
$execution->getEngine()->debug('Executing manual task "{task}"', ['task' => $name]);
$engine->notify(new TaskExecutedEvent($name, new DelegateExecution($execution), $engine));
$this->leave($execution);
}
/**
* {@inheritdoc}
*/
public function processSignal(VirtualExecution $execution, $signal, array $variables = [], array $delegation = [])
{
$engine = $execution->getEngine();
$engine->notify(new ActivityCompletedEvent($execution->getNode()->getId(), $execution, $engine));
$node = $execution->getProcessModel()->findNode($delegation['nodeId']);
$engine->notify(new ActivityStartedEvent($node->getId(), $execution, $engine));
$this->delegateSignal($execution, $signal, $variables, $delegation);
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$engine = $execution->getEngine();
$name = $this->getStringValue($this->name, $execution->getExpressionContext());
$engine->debug('{execution} reached checkpoint "{checkpoint}" ({node})', ['execution' => (string) $execution, 'checkpoint' => $this->name, 'node' => $execution->getNode()->getId()]);
$engine->notify(new CheckpointReachedEvent($name, new DelegateExecution($execution), $engine));
$this->leave($execution);
}
/**
* Create a new persisted event subscription.
*
* @param string $name Name of the subscription type: "signal", "message", etc.
* @param VirtualExecution $execution Target execution.
* @param string $activityId ID of the activity that created the event subscription.
* @param Node $node Target node to receive the delegated signal or NULL in order to use the activity node.
* @param boolean $boundaryEvent Is this a subscription for a boundary event?
*/
public function __construct($name, VirtualExecution $execution, $activityId, Node $node = NULL, $boundaryEvent = false)
{
$this->name = (string) $name;
$this->executionId = $execution->getId();
$this->activityId = (string) $activityId;
$this->nodeId = $node === NULL ? NULL : (string) $node->getId();
$this->boundaryEvent = $boundaryEvent ? true : false;
}
public function setParentExecution(VirtualExecution $parent = NULL)
{
if ($parent !== NULL) {
$this->parentExecution = $parent;
$parent->registerChildExecution($this);
}
$this->markModified();
}
/**
* {@inheritdoc}
*/
public function createEventSubscriptions(VirtualExecution $execution, $activityId, Node $node = NULL)
{
$date = $this->getDateValue($this->date, $execution->getExpressionContext());
if (!$date instanceof \DateTimeInterface) {
throw new \RuntimeException(sprintf('Expecting DateTimeInterface, given %s', is_object($date) ? get_class($date) : gettype($date)));
}
$execution->getEngine()->executeCommand(new CreateTimerSubscriptionCommand($date, $execution, $activityId, $node === NULL ? $execution->getNode() : $node));
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$engine = $execution->getEngine();
$typeName = $this->getStringValue($this->typeName, $execution->getExpressionContext());
$name = $this->getStringValue($this->name, $execution->getExpressionContext());
$task = $engine->createDelegateTask($typeName);
if (!$task instanceof DelegateTaskInterface) {
throw new \RuntimeException('Invalid service task implementation: ' . get_class($task));
}
$engine->debug('Execute delegate task "{task}" implemented by <{class}>', ['task' => $name, 'class' => get_class($task)]);
$task->execute(new DelegateExecution($execution));
$engine->notify(new TaskExecutedEvent($name, new DelegateExecution($execution), $engine));
$this->leave($execution);
}
/**
* {@inheritdoc}
*/
public function executeCommand(ProcessEngine $engine)
{
$def = $engine->getRepositoryService()->createProcessDefinitionQuery()->processDefinitionId($this->definitionId)->findOne();
$definition = $def->getModel();
$startNode = $definition->findNode($this->startNodeId);
$process = new VirtualExecution(UUID::createRandom(), $engine, $definition);
$process->setBusinessKey($this->businessKey);
$process->setNode($startNode);
foreach (unserialize($this->variables) as $k => $v) {
$process->setVariable($k, $v);
}
$engine->registerExecution($process);
$engine->info('Started {process} using process definition "{key}" ({id})', ['process' => (string) $process, 'key' => $def->getKey(), 'id' => (string) $def->getId()]);
$process->execute($startNode);
return $process->getId();
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$execution->getEngine()->debug('Reached terminate end event "{name}"', ['name' => $this->getStringValue($this->name, $execution->getExpressionContext())]);
$engine = $execution->getEngine();
$engine->notify(new ActivityCompletedEvent($execution->getNode()->getId(), $execution, $engine));
$root = $execution->getScopeRoot();
$root->setNode($execution->getNode());
$root->setTransition($execution->getTransition());
$root->terminate(false);
}
/**
* {@inheritdoc}
*/
public function executeJob(Job $job, VirtualExecution $execution, ProcessEngine $engine)
{
if ($execution->isTerminated()) {
throw new \RuntimeException(sprintf('%s is terminated', $execution));
}
$data = (array) $job->getHandlerData();
$command = $data[self::PARAM_COMMAND];
if (!$command instanceof CommandInterface) {
throw new \RuntimeException(sprintf('Expecting command, given %s', is_object($command) ? get_class($command) : gettype($command)));
}
// Move execution to start node if param is set.
if (array_key_exists(self::PARAM_NODE_ID, $data)) {
$execution->setNode($execution->getProcessModel()->findNode($data[self::PARAM_NODE_ID]));
$engine->debug('Moved {execution} to node "{node}"', ['execution' => (string) $execution, 'node' => $execution->getNode()->getId()]);
}
$engine->debug('Executing async command {cmd} using {execution}', ['cmd' => get_class($command), 'execution' => (string) $execution]);
$engine->pushCommand($command);
}
/**
* {@inheritdoc}
*/
public function interrupt(VirtualExecution $execution, array $transitions = NULL)
{
$engine = $execution->getEngine();
$root = $execution->getScope();
$params = ['e1' => $root->getId()];
$i = 1;
foreach ($root->findChildExecutions() as $child) {
$params['e' . ++$i] = $child->getId();
}
$placeholders = implode(', ', array_map(function ($p) {
return ':' . $p;
}, array_keys($params)));
$stmt = $engine->prepareQuery("SELECT `id` FROM `#__bpmn_user_task` WHERE `execution_id` IN ({$placeholders})");
$stmt->bindAll($params);
$stmt->transform('id', new UUIDTransformer());
$stmt->execute();
foreach ($stmt->fetchColumns('id') as $taskId) {
$engine->executeCommand(new RemoveUserTaskCommand($taskId));
}
parent::interrupt($execution, $transitions);
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$engine = $execution->getEngine();
$name = $this->getStringValue($this->name, $execution->getExpressionContext());
$engine->debug('Evaluate <{language}> script task "{task}"', ['language' => $this->language, 'task' => $name]);
if ($this->scriptResource !== NULL) {
$process = $engine->getRepositoryService()->createProcessDefinitionQuery()->processDefinitionId($execution->getProcessModel()->getId())->findOne();
$deployment = $engine->getRepositoryService()->createDeploymentQuery()->deploymentId($process->getDeploymentId())->findOne();
$resource = $deployment->findResourceById($process->getResourceId());
$file = str_replace('./', '', dirname($resource->getName()) . '/' . $this->scriptResource);
$script = '?>' . $deployment->findResource($file)->getContents();
} else {
$script = $this->script;
}
// Isolate scope to prevent manipulation of local / instance variables:
$callback = function (DelegateExecution $execution, $script) {
return eval($script);
};
if (method_exists($callback, 'bindTo')) {
$callback = $callback->bindTo(NULL, NULL);
}
$result = $callback(new DelegateExecution($execution), $script);
if ($this->resultVariable !== NULL) {
$execution->setVariable($this->resultVariable, $result);
}
$engine->notify(new TaskExecutedEvent($name, new DelegateExecution($execution), $engine));
$this->leave($execution);
}
public function processSignal(VirtualExecution $execution, $signal, array $variables = [], array $delegation = [])
{
$startNode = $execution->getProcessModel()->findNode($this->startNodeId);
$root = $execution->getScope();
$scope = $this->findScopeActivity($execution);
if (!$this->isInterrupting()) {
return $scope->leaveConcurrent($root, $startNode);
}
// Kill all remaining concurrent executions within the scope activity:
foreach ($root->findChildExecutions() as $child) {
$child->terminate(false);
}
$scope->clearEventSubscriptions($root, $scope->getActivityId());
$root->setNode($this->findScopeNode($root));
$root->setActive(false);
$root->waitForSignal();
$sub = $root->createExecution(false);
$sub->setNode($startNode);
$sub->waitForSignal();
$sub->getEngine()->notify(new ActivityCanceledEvent($this->attachedTo, $sub, $sub->getEngine()));
// Delegate received signal to event sub process start event.
$sub->signal($signal, $variables);
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$engine = $execution->getEngine();
$name = $this->getStringValue($this->name, $execution->getExpressionContext());
$engine->debug('Execute expression in service task "{task}"', ['task' => $name]);
$result = $this->getValue($this->expression, $execution->getExpressionContext());
if ($this->resultVariable !== NULL) {
$execution->setVariable($this->resultVariable, $result);
}
$engine->notify(new TaskExecutedEvent($name, new DelegateExecution($execution), $engine));
$this->leave($execution);
}
/**
* @param VirtualExecution $execution
* @return AbstractScopeActivity
*/
public function findScopeActivity(VirtualExecution $execution)
{
return $execution->getProcessModel()->findNode($this->attachedTo)->getBehavior();
}
/**
* Collect all boundary events connected to the activity of the given execution.
*
* @param VirtualExecution $execution
* @return array<Node>
*/
public function findAttachedBoundaryActivities(VirtualExecution $execution)
{
$model = $execution->getProcessModel();
$activities = [];
foreach ($model->findNodes() as $node) {
$behavior = $node->getBehavior();
if ($behavior instanceof AbstractBoundaryActivity) {
if ($this->activityId == $behavior->getAttachedTo()) {
$activities[] = $node;
}
}
}
return $activities;
}
/**
* {@inheritdoc}
*/
public function createEventSubscriptions(VirtualExecution $execution, $activityId, Node $node = NULL)
{
$execution->getEngine()->pushCommand(new CreateSignalSubscriptionCommand($this->signal, $execution, $activityId, $node === NULL ? $execution->getNode() : $node));
parent::createEventSubscriptions($execution, $activityId, $node);
}
protected function dumpExecution(VirtualExecution $exec)
{
$node = $exec->getNode();
$nodeId = $node === NULL ? NULL : $node->getId();
printf("%s%s [ %s ]\n", str_repeat(' ', $exec->getExecutionDepth()), $nodeId, $exec->getId());
foreach ($exec->findChildExecutions() as $child) {
$this->dumpExecution($child);
}
}
/**
* {@inheritdoc}
*/
public function createEventSubscriptions(VirtualExecution $execution, $activityId, Node $node = NULL)
{
$execution->getEngine()->executeCommand(new CreateMessageSubscriptionCommand($this->message, $execution, $activityId, $node === NULL ? $execution->getNode() : $node));
}
public function __construct(VirtualExecution $execution)
{
$this->executionId = $execution->getId();
}
/**
* Delegate signal to a target node using the same execution.
*
* @param VirtualExecution $execution
* @param string $signal
* @param array $variables
* @param array $delegation
* @return boolean Returns true if the signal could be delegated.
*/
protected function delegateSignal(VirtualExecution $execution, $signal, array $variables, array $delegation)
{
if (empty($delegation['nodeId'])) {
return false;
}
$node = $execution->getProcessModel()->findNode($delegation['nodeId']);
$execution->getEngine()->debug('Delegating signal <{signal}> to {node}', ['signal' => $signal === NULL ? 'NULL' : $signal, 'node' => (string) $node]);
$execution->setNode($node);
$execution->waitForSignal();
$execution->signal($signal, $variables);
return true;
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$execution->getEngine()->pushCommand(new SignalEventReceivedCommand($this->signalName, NULL, [], $execution));
$execution->waitForSignal();
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$execution->waitForSignal();
}
/**
* {@inheritdoc}
*/
public function enter(VirtualExecution $execution)
{
$execution->getEngine()->pushCommand(new ThrowMessageCommand($execution));
$execution->waitForSignal();
}
/**
* {@inheritdoc}
*/
public function createEventSubscriptions(VirtualExecution $execution, $activityId, Node $node = NULL)
{
$execution->getEngine()->executeCommand(new CreateSignalSubscriptionCommand($this->signal, $execution, $activityId, $node, true));
}