io.cloudstate.javasupport.ServiceCallFactory Maven / Gradle / Ivy
package io.cloudstate.javasupport;
/**
* A service call factory.
*
* This is used to create {@link ServiceCall}'s that can be passed to {@link
* EffectContext#effect(ServiceCall)} and {@link ClientActionContext#forward(ServiceCall)} f}.
*/
public interface ServiceCallFactory {
/**
* Lookup a reference to the service call with the given name and method.
*
* @param serviceName The fully qualified name of a gRPC service that this stateful service
* serves.
* @param methodName The name of a method on the gRPC service.
* @param messageType The expected type of the input message to the method.
* @param The type of the parameter that it accepts.
* @return A reference to the service call.
* @throws java.util.NoSuchElementException if the service or method is not found.
* @throws IllegalArgumentException if the accepted input type for the method doesn't match
* messageType.
*/
ServiceCallRef lookup(String serviceName, String methodName, Class messageType);
}