[FIXED] MethodInvokingFactoryBean returns itself instead of desired object

Issue

I am trying to use a MethodInvokingFactoryBean to get an instance of a com.amazonaws.regions.Region for use in configuring a com.amazonaws.services.kinesis.AmazonKinesisClient. I am doing this in Blueprint, Camel, Karaf.

<bean id="awsRegion" class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
    <property name="targetClass" value="com.amazonaws.regions.RegionUtils"/>
    <property name="targetMethod" value="getRegion"/>
    <property name="arguments">
        <list>
            <value>EU-WEST-1</value>
        </list>
    </property>
</bean>

<bean id="kinesisClient" class="com.amazonaws.services.kinesis.AmazonKinesisClient">
    <property name="region" ref="awsRegion"/>
</bean>

This seems like it should work, with the first bean creating a Region, and the second bean using it.

However, I get an error that makes it seem like the MethodInvokingFactoryBean is just returning an instance of itself instead of Region.

org.osgi.service.blueprint.container.ComponentDefinitionException: Error setting property: PropertyDescriptor <name: region, getter: null, setter: [class com.amazonaws.AmazonWebServiceClient.setRegion(class com.amazonaws.regions.Region)]
...
Caused by: java.lang.Exception: Unable to convert value org.springframework.beans.factory.config.MethodInvokingFactoryBean@2289c050 to type com.amazonaws.regions.Region

The method I'm invoking in RegionUtils should return a Region https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/regions/RegionUtils.html#getRegion-java.lang.String-

I came upon this way of getting the Region in the Client in this question, where the solution seemed to work for the asker.

Bind aws sqs region camel

Solution

At first , apache-camel tag is excess here. As second, you missed that asker is using spring context and you are using blueprint context. Try something like this:

<bean id="awsRegion" class="com.amazonaws.regions.RegionUtils" factory-method="getRegion">
    <argument value="EU-WEST-1"/>
</bean>

<bean id="kinesisClient" class="com.amazonaws.services.kinesis.AmazonKinesisClient">
    <property name="region" ref="awsRegion"/>
</bean>

EDIT: just tested this example with latest aws-java-sdk and it is worked

Answered By - c0ld
Answer Checked By - Willingham (JavaFixing Volunteer)