com.fnproject.fn.runtime.flow

Class JsonInvoke

java.lang.Object

com.fnproject.fn.runtime.flow.JsonInvoke

public class JsonInvoke
extends Object

Internal Helper for calling JSON functions via the API

Created on 21/09/2017.

(c) 2017 Oracle Corporation

Constructor Summary

Constructors

Constructor and Description
JsonInvoke()

Method Summary

Modifier and Type	Method and Description
static <U> FlowFuture<HttpResponse>	invokeFunction(Flow flow, String functionId, HttpMethod method, Headers headers, U input) Invoke a void JSON function on a given flow by mapping the input to JSON, returns a future that completes with the HttpResponse of the function if the function returns a successful http response, and completes with an error if the function invocation fails.
static <T extends Serializable,U> FlowFuture<T>	invokeFunction(Flow flow, String functionId, HttpMethod method, Headers headers, U input, Class<T> responseType) Invoke a JSON function on a given flow by mapping the input to JSON and composing a result stage that maps the argument back into the requested type.

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonInvoke

public JsonInvoke()

Method Detail

invokeFunction

public static <T extends Serializable,U> FlowFuture<T> invokeFunction(Flow flow,
                                                                      String functionId,
                                                                      HttpMethod method,
                                                                      Headers headers,
                                                                      U input,
                                                                      Class<T> responseType)

Invoke a JSON function on a given flow by mapping the input to JSON and composing a result stage that maps the argument back into the requested type.

Type Parameters:

T - the return type

U - the input type

Parameters:

flow - the flow to invoke the subsequent call onto

functionId - the function ID to invoke

method - the HTTP method to use

headers - additional headers to pass - the content

input - the input object

responseType - the response type to map the function result to

Returns:

a future that returns the object value of JSON function or throws an error if that function fails.

invokeFunction

public static <U> FlowFuture<HttpResponse> invokeFunction(Flow flow,
                                                          String functionId,
                                                          HttpMethod method,
                                                          Headers headers,
                                                          U input)

Invoke a void JSON function on a given flow by mapping the input to JSON, returns a future that completes with the HttpResponse of the function if the function returns a successful http response, and completes with an error if the function invocation fails.

Type Parameters:

U - the input type

Parameters:

flow - the flow to invoke the subsequent call onto

functionId - the function ID to invoke

method - the HTTP method to use

headers - additional headers to pass - the content

input - the input object

Returns:

a future that returns the object value of JSON function or throws an error if that function fails.