Install Oracle Java SE Development Kit (JDK) version 1.8.* and set the JAVA_HOME environment variable.
Download the WSO2 EI ZIP file from here, and then extract the ZIP file. The path to this folder will be referred to as <EI_HOME> through out this tutorial.
Select and download the relevant EI tooling ZIP file based on your operating system from from here and and then extract the ZIP file. The path to this folder will be referred to as <EI_TOOLING> through out this tutorial.
Open the ESB Tooling environment and click File -> Import. Then, select Existing WSO2 Projects into workspace under the WSO2 category, click Next and upload the extracted pre-packaged C-App project. This C-App contains the configurations of the service chaining tutorial. On the Servers tab, right-click the WSO2 ESB server, select Add and Remove and choose SampleServicesCompositeApplication, and click Finish.
If you do not have a server added in Eclipse, refer this tutorial.