akshayrai commented on a change in pull request #5155: [TE] anomaly detection
model downloader
URL: https://github.com/apache/incubator-pinot/pull/5155#discussion_r393306061
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File path:
thirdeye/thirdeye-pinot/src/main/java/org/apache/pinot/thirdeye/model/download/ModelDownloaderManager.java
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@@ -0,0 +1,68 @@
+package org.apache.pinot.thirdeye.model.download;
+
+import java.lang.reflect.Constructor;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import org.apache.pinot.thirdeye.auto.onboard.AutoOnboardService;
+import org.apache.pinot.thirdeye.common.time.TimeGranularity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * The model downloader manager. This class manages the life cycle of the
model downloader.
+ * It constructs the model downloader, and then schedules the model downloader
to run periodically and downloads the
+ * models into a local destination path. The class names, the run frequency
and the download path can be configured.
+ */
+public class ModelDownloaderManager {
+ private static final Logger LOG =
LoggerFactory.getLogger(AutoOnboardService.class);
+
+ private final List<ModelDownloaderConfiguration> configs;
+ private final Map<String, ModelDownloader> modelDownloaders;
+ private ScheduledExecutorService scheduledExecutorService;
+
+ public ModelDownloaderManager(List<ModelDownloaderConfiguration>
modelDownloaderConfigs) {
+ this.configs = modelDownloaderConfigs;
+ this.modelDownloaders = new HashMap<>();
+ this.scheduledExecutorService = Executors.newScheduledThreadPool(5);
+
+ constructModelDownloaders();
+ }
+
+ private void constructModelDownloaders() {
+ for (ModelDownloaderConfiguration config : this.configs) {
+ try {
+ Constructor<?> constructor =
Class.forName(config.getClassName()).getConstructor(Map.class);
+ ModelDownloader downloader = (ModelDownloader)
constructor.newInstance(config.getProperties());
+ this.modelDownloaders.put(config.getClassName(), downloader);
+ } catch (Exception e) {
+ LOG.warn("Failed to initialize model downloader {}",
config.getClassName(), e);
+ }
+ }
+ }
+
+ /**
+ * start the model downloader manager
+ */
+ public void start() {
Review comment:
Where will this run? every worker?
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