org.springframework.cloud.function.adapter.azure

Class AzureFunctionInstanceInjector

java.lang.Object

org.springframework.cloud.function.adapter.azure.AzureFunctionInstanceInjector

All Implemented Interfaces:

com.microsoft.azure.functions.spi.inject.FunctionInstanceInjector

public class AzureFunctionInstanceInjector
extends Object
implements com.microsoft.azure.functions.spi.inject.FunctionInstanceInjector

The instance factory used by the Spring framework to initialize Azure function instance. It is waived with the Azure Java Worker through the META-INFO/services/com.microsoft.azure.functions.spi.inject.FunctionInstanceInjector service hook. The Azure Java Worker delegates scans the classpath for service definition and delegates the function class creation to this instance factory.

Since:

3.2.9

Author:

Christian Tzolov

Constructor Summary

Constructors

Constructor and Description
AzureFunctionInstanceInjector()

Method Summary

Modifier and Type	Method and Description
<T> T	getInstance(Class<T> functionClass) This method is called by the Azure Java Worker on every function invocation.

Methods inherited from class java.lang.Object

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

Constructor Detail

AzureFunctionInstanceInjector

public AzureFunctionInstanceInjector()

Method Detail

getInstance

public <T> T getInstance(Class<T> functionClass)
                  throws Exception

This method is called by the Azure Java Worker on every function invocation. The Worker sends in the classes annotated with @FunctionName annotations and allows the Spring framework to initialize the function instance as a Spring Bean and return the instance. Then the Worker uses the created instance to invoke the function.

Specified by:

getInstance in interface com.microsoft.azure.functions.spi.inject.FunctionInstanceInjector

Type Parameters:

T - customer Azure functions class type

Parameters:

functionClass - the class that contains customer Azure functions (e.g. @FunctionName annotated )

Returns:

the instance that will be invoked on by azure functions java worker

Throws:

Exception - any exception that is thrown by the Spring framework during instance creation