com.salesforce.cantor.functions.executors

Class ChainExecutor

java.lang.Object

com.salesforce.cantor.functions.executors.ChainExecutor

All Implemented Interfaces:

Executor

public class ChainExecutor
extends Object
implements Executor

The Chain Executor is used to execute a chain of functions. The chain is defined as a '|' separated list of functions to execute. For example: "namespace1/func1?foo=bar | namespace2/func2 | namespace3/func3?bar=baz" Each function in the chain is executed in order, and the same context variable is passed from one function call to the other, allowing functions to consume results from previous functions in the chain.

Constructor Summary

Constructors

Constructor and Description
ChainExecutor()

Method Summary

Modifier and Type	Method and Description
List<String>	getExtensions() Returns list of extensions this executor can execute.
void	run(String function, byte[] body, Context context, Map<String,String> params) Given the body of a function which its name ends with an extension that this executor accepts, run the function.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChainExecutor

public ChainExecutor()

Method Detail

getExtensions

public List<String> getExtensions()

Description copied from interface: Executor

Returns list of extensions this executor can execute. For example, a Python executor may return .py and .python.

Specified by:

getExtensions in interface Executor

Returns:

list of acceptable extensions

run

public void run(String function,
                byte[] body,
                Context context,
                Map<String,String> params)
         throws IOException

Description copied from interface: Executor

Given the body of a function which its name ends with an extension that this executor accepts, run the function.

Specified by:

run in interface Executor

Parameters:

function - the function name

body - the body of the function

context - context variable

params - parameters passed for this execution

Throws:

IOException