| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.nemo.driver; |
| |
| import org.apache.reef.driver.client.JobMessageObserver; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.logging.Handler; |
| import java.util.logging.LogRecord; |
| import java.util.logging.SimpleFormatter; |
| |
| /** |
| * A simple logging handler that forwards messages to REEF client. |
| */ |
| public final class RemoteClientMessageLoggingHandler extends Handler { |
| |
| private final JobMessageObserver client; |
| private final SimpleFormatter formatter; |
| private final AtomicBoolean closed; |
| |
| public RemoteClientMessageLoggingHandler(final JobMessageObserver client) { |
| this.client = client; |
| this.closed = new AtomicBoolean(false); |
| this.formatter = new SimpleFormatter(); |
| } |
| |
| /** |
| * TODO #XXX: buffer the log messages for performance. |
| */ |
| @Override |
| public void publish(final LogRecord record) { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append(formatter.format(record)); |
| |
| if (!closed.get()) { |
| client.sendMessageToClient(sb.toString().getBytes()); |
| } |
| } |
| |
| @Override |
| public void flush() { |
| |
| } |
| |
| @Override |
| public void close() throws SecurityException { |
| closed.set(true); |
| } |
| } |