Link EMP packages - AWS End-of-Support Migration Program (EMP) for Windows Server

Link EMP packages

This topic contains an example Redirections.xml file to show you how to link EMP packages so that they can interact with each other. One scenario for which this process is useful is if an application requires access to files or registry keys from a different EMP package, for example, if you packaged a dependency in a separate EMP package and the main application requires access to the dependency application to function as required.

You can link packages by loading the Redirections.xml file from one package to another using the <Includes> tag in the EMP compatibility engine config file (Compatibility.Package.Engine.clc).


In the following example, an <Include> tag entry has been added (C:\DeployDirForPackage2\ExamplePackage2\Redirections.xml). When a process from ExamplePackage1 starts, the engine that starts the process will load the Redirections.xml file from both ExamplePackage1 and ExamplePackage2.

<AAV PackageId="ExamplePackage1"> <Includes> <Include>Redirections.xml</Include> <Include>C:\DeployDirForPackage2\ExamplePackage2\Redirections.xml</Include> </Includes>

When both Redirections.xml files are loaded, the process from ExamplePackage1 follows all of the redirections from ExamplePackage2. In this example, we could add an <Include> entry for the Redirections.xml for ExamplePackage1 in the Compatibility.Package.Engine.clc of ExamplePackage2 so that processes from either package can access each other.

In this example, a relative path is used. If ExamplePackage1 and ExamplePackage2 are deployed into the same DeployDir, you can enter the path as follows: <Include>..\ExamplePackage2\Redirections.xml</Include>.