add support for maxInstances in RuntimeOptions (#624)

Co-authored-by: joehan <joehanley@google.com>

Author: efiShtain

src/cloud-functions.ts

@@ -486,5 +486,9 @@ export function optionsToTrigger(options: DeploymentOptions) {
   if (options.schedule) {
     trigger.schedule = options.schedule;
   }
+
+  if (options.maxInstances) {
+    trigger.maxInstances = options.maxInstances;
+  }
   return trigger;
 }

src/function-configuration.ts

@@ -61,6 +61,11 @@ export interface RuntimeOptions {
    * Timeout for the function in seconds, possible values are 0 to 540.
    */
   timeoutSeconds?: number;
+
+  /**
+   * Max number of actual instances allowed to be running in parallel
+   */
+  maxInstances?: number;
 }
 
 export interface DeploymentOptions extends RuntimeOptions {