com.fnproject.fn.runtime

Class MethodFunctionInvoker

java.lang.Object

com.fnproject.fn.runtime.MethodFunctionInvoker

All Implemented Interfaces:

FunctionInvoker

public class MethodFunctionInvoker
extends Object
implements FunctionInvoker

Method function invoker

This handles the binding and invocation of function calls via java methods.

Nested Class Summary

Nested classes/interfaces inherited from interface com.fnproject.fn.api.FunctionInvoker

FunctionInvoker.Phase

Constructor Summary

Constructors

Constructor and Description
MethodFunctionInvoker()

Method Summary

Modifier and Type	Method and Description
protected Object[]	coerceParameters(InvocationContext ctx, MethodWrapper targetMethod, InputEvent evt)
protected Optional<OutputEvent>	coerceReturnValue(InvocationContext ctx, MethodWrapper method, Object rawResult)
Optional<OutputEvent>	tryInvoke(InvocationContext ctx, InputEvent evt) Invoke the function wrapped by this loader

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MethodFunctionInvoker

public MethodFunctionInvoker()

Method Detail

tryInvoke

public Optional<OutputEvent> tryInvoke(InvocationContext ctx,
                                       InputEvent evt)
                                throws InternalFunctionInvocationException

Invoke the function wrapped by this loader

Specified by:

tryInvoke in interface FunctionInvoker

Parameters:

evt - The function event

Returns:

the function response

Throws:

InternalFunctionInvocationException - if the invocation fails

coerceParameters

protected Object[] coerceParameters(InvocationContext ctx,
                                    MethodWrapper targetMethod,
                                    InputEvent evt)

coerceReturnValue

protected Optional<OutputEvent> coerceReturnValue(InvocationContext ctx,
                                                  MethodWrapper method,
                                                  Object rawResult)