Add updateWithStart into WorkflowClient

src/Client/WorkflowClient.php

@@ -25,6 +25,9 @@
 use Temporal\Client\Common\ClientContextTrait;
 use Temporal\Client\Common\Paginator;
 use Temporal\Client\GRPC\ServiceClientInterface;
+use Temporal\Client\Update\LifecycleStage;
+use Temporal\Client\Update\UpdateHandle;
+use Temporal\Client\Update\UpdateOptions;
 use Temporal\Client\Workflow\CountWorkflowExecutions;
 use Temporal\Client\Workflow\WorkflowExecutionHistory;
 use Temporal\DataConverter\DataConverter;
@@ -232,6 +235,38 @@ public function startWithSignal(
         return $this->signalWithStart($workflow, $signal, $signalArgs, $startArgs);
     }
 
+    public function updateWithStart(
+        $workflow,
+        string|UpdateOptions $update,
+        array $updateArgs = [],
+        array $startArgs = [],
+    ): UpdateHandle {
+        $workflow instanceof WorkflowProxy && !$workflow->hasHandler() && throw new InvalidArgumentException(
+            'Unable to start workflow without workflow handler',
+        );
+
+        $update = \is_string($update) ? UpdateOptions::new($update, LifecycleStage::StageAccepted) : $update;
+
+        $workflowStub = WorkflowStubConverter::fromWorkflow($workflow);
+
+        $workflowType = $workflowStub->getWorkflowType() ?? throw new InvalidArgumentException(
+            'Unable to start untyped workflow without given workflowType',
+        );
+        $workflowStub->hasExecution() and throw new InvalidArgumentException(self::ERROR_WORKFLOW_START_DUPLICATION);
+
+        $handle = $this->getStarter()->updateWithStart(
+            $workflowType,
+            $workflowStub->getOptions() ?? WorkflowOptions::new(),
+            $update,
+            $updateArgs,
+            $startArgs,
+        );
+
+        $workflowStub->setExecution($handle->getExecution());
+
+        return $handle;
+    }
+
     /**
      * {@inheritDoc}
      */

src/Client/WorkflowClientInterface.php

@@ -16,6 +16,8 @@
 use Temporal\Client\Common\ClientContextInterface;
 use Temporal\Client\Common\Paginator;
 use Temporal\Client\GRPC\ServiceClientInterface;
+use Temporal\Client\Update\UpdateHandle;
+use Temporal\Client\Update\UpdateOptions;
 use Temporal\Client\Workflow\CountWorkflowExecutions;
 use Temporal\Client\Workflow\WorkflowExecutionHistory;
 use Temporal\Workflow\WorkflowExecution;
@@ -45,7 +47,10 @@ public function start($workflow, ...$args): WorkflowRunInterface;
      * @param non-empty-string $signal
      * @param array $signalArgs
      * @param array $startArgs
+     *
      * @return WorkflowRunInterface
+     *
+     * @since 2.12.0
      */
     public function signalWithStart(
         $workflow,
@@ -65,6 +70,26 @@ public function startWithSignal(
         array $startArgs = [],
     ): WorkflowRunInterface;
 
+    /**
+     * Starts untyped and typed workflow stubs in async mode. Sends Update on start.
+     *
+     * @param object|WorkflowStubInterface $workflow
+     * @param non-empty-string|UpdateOptions $update Name of the update handler or update options.
+     * @param array $updateArgs
+     * @param array $startArgs
+     *
+     * @return UpdateHandle
+     *
+     * @note Experimental feature.
+     * @since 2.12.0
+     */
+    public function updateWithStart(
+        $workflow,
+        string|UpdateOptions $update,
+        array $updateArgs = [],
+        array $startArgs = [],
+    ): UpdateHandle;
+
     /**
      * Creates workflow client stub that can be used to start a single workflow execution.
      *