o1sims / jarima Goto Github PK

Problem

Need to develop a Java application structure that provides an API to access the ARIMA function in R and return the results of the analysis.

Solution

Create a Dockerized application using Java Spring boot to call an instance of RServe running in another Docker container. The application needs to be able to consume an array of doubles and pass the array to the RServe instance with the call for auto.arima functionality.

The call should be in the following format:

final RConnection c = rServeSinkBroadcast.value().getRConnection();
final double[] scores = previousScores.stream().mapToDouble(Double::doubleValue).toArray();
c.assign("x", scores);
c.voidEval("dffv <- data.frame(forecast::forecast(forecast::auto.arima(x), 1))");
final Double hi95 = c.eval("dffv$Hi.95").asDouble();
final Double lo95 = c.eval("dffv$Lo.95").asDouble();

Problem

Need to be able to perform the Java ARIMA analysis through the use of an API

Solution

Add another POST endpoint to consume an array of numbers (doubles). This will be labelled under the .../api/j-arima/ endpoint.