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Add zeppelinhub notebook watcher

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This commit is contained in:
Anthony Corbacho 2016-10-27 17:32:27 +09:00
parent 9d6c93f62a
commit e5b3a1d5a6
1 changed files with 66 additions and 0 deletions
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zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/repo/zeppelinhub/websocket/listener/WatcherWebsocket.java Normal file
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package org.apache.zeppelin.notebook.repo.zeppelinhub.websocket.listener;
import org.apache.commons.lang.StringUtils;
import org.apache.zeppelin.notebook.repo.zeppelinhub.websocket.ZeppelinClient;
import org.apache.zeppelin.notebook.socket.Message;
import org.apache.zeppelin.notebook.socket.Message.OP;
import org.apache.zeppelin.notebook.socket.WatcherMessage;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.WebSocketListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.gson.Gson;
/**
*
*
*/
public class WatcherWebsocket implements WebSocketListener {
private static final Logger LOG = LoggerFactory.getLogger(ZeppelinWebsocket.class);
private static final Gson GSON = new Gson();
public Session connection;
public static WatcherWebsocket createInstace() {
return new WatcherWebsocket();
}
@Override
public void onWebSocketBinary(byte[] payload, int offset, int len) {
}
@Override
public void onWebSocketClose(int code, String reason) {
LOG.info("WatcherWebsocket connection closed with code: {}, message: {}", code, reason);
}
@Override
public void onWebSocketConnect(Session session) {
LOG.info("WatcherWebsocket connection opened");
this.connection = session;
session.getRemote().sendStringByFuture(GSON.toJson(new Message(OP.WATCHER)));
}
@Override
public void onWebSocketError(Throwable cause) {
LOG.warn("WatcherWebsocket socket connection error ", cause);
}
@Override
public void onWebSocketText(String message) {
LOG.debug("WatcherWebsocket client received Message: " + message);
WatcherMessage watcherMsg = GSON.fromJson(message, WatcherMessage.class);
if (StringUtils.isBlank(watcherMsg.noteId)) {
return;
}
try {
ZeppelinClient zeppelinClient = ZeppelinClient.getInstance();
if (zeppelinClient != null) {
zeppelinClient.handleMsgFromZeppelin(watcherMsg.message, watcherMsg.noteId);
}
} catch (Exception e) {
LOG.error("Failed to send message to ZeppelinHub: ", e);
}
}
}