Service Chainer

Quickly and easily chain multiple service calls together with the ability to manipulate each input payload using templates.

Currently Supports

• Freemarker Template Engine
• Velocity Template Engine

Special Template Input Constants

• document (Freemarker/Velocity). Represents incoming data payload json
• JSONUtils (Velocity). Helper class used to output Java Map to JSON.
• Integer (Velocity). java.lang.Integer static class
• Double (Velocity). java.lang.Double static class
• Float (Velocity). java.lang.Float static class
• Boolean (Velocity). java.lang.Boolean static class

Notes

To develop service chains with a UI interface, see this project: https://github.com/orange451/ServiceChainerApp

Sample Template Transformation

importjava.util.Map;
importdev.anarchy.common.DServiceDefinition;
importdev.anarchy.translate.runner.BasicServiceChainRunner;
importdev.anarchy.translate.util.JSONUtils;
importdev.anarchy.translate.util.TranslateType;
publicclassSampleApplication {
privatestaticfinalStringtemplate = "{\"user\":\"${document.Username}\"}";
privatestaticfinalStringdata = "{\"Username\":\"Hello\"}";
publicstaticvoidmain(String[] args) {
System.out.println("Template:\n" + template);
System.out.println("Data:\n" + data);
// Create Service DefinitionDServiceDefinitionserviceDefinition = newDServiceDefinition();
serviceDefinition.setTransformationType(TranslateType.FREEMARKER.getName());
serviceDefinition.setTemplateContent(template);
// Create a runner and test service definitionMap<String, Object> input = JSONUtils.jsonToMap(data);
Map<String, Object> output = null;
try {
BasicServiceChainRunnerrunner = newBasicServiceChainRunner(null);
output = runner.transformSingle(serviceDefinition, input, false);
} catch(Exceptione) {
e.printStackTrace();
}
// View outputSystem.out.println("Output:\n" + JSONUtils.mapToJson(output));
}
}