@Override
protected void runSteps() throws IOException {
String instanceDir = getInstanceDir();
int generationID = getGenerationID();
String generationPrefix = Namespaces.getInstanceGenerationPrefix(instanceDir, generationID);
int lastGenerationID = getLastGenerationID();
File currentInputDir = Files.createTempDir();
currentInputDir.deleteOnExit();
File tempOutDir = Files.createTempDir();
tempOutDir.deleteOnExit();
try {
Store store = Store.get();
store.downloadDirectory(generationPrefix + "inbound/", currentInputDir);
if (lastGenerationID >= 0) {
store.downloadDirectory(
Namespaces.getInstanceGenerationPrefix(instanceDir, lastGenerationID) + "input/",
currentInputDir);
}
List<Example> examples = new ArrayList<>();
Map<Integer, BiMap<String, Integer>> columnToCategoryNameToIDMapping = new HashMap<>();
new ReadInputs(currentInputDir, examples, columnToCategoryNameToIDMapping).call();
DecisionForest forest = DecisionForest.fromExamplesWithDefault(examples);
DecisionForestPMML.write(
new File(tempOutDir, "model.pmml.gz"), forest, columnToCategoryNameToIDMapping);
store.uploadDirectory(generationPrefix + "input/", currentInputDir, false);
store.uploadDirectory(generationPrefix, tempOutDir, false);
} finally {
IOUtils.deleteRecursively(currentInputDir);
IOUtils.deleteRecursively(tempOutDir);
}
}
