001/* 002 * (C) Copyright 2017 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bdelbosc 018 */ 019package org.nuxeo.lib.stream.tools.renderer; 020 021import static java.lang.Math.min; 022 023import java.io.UnsupportedEncodingException; 024import java.text.SimpleDateFormat; 025import java.util.Date; 026import java.util.function.Consumer; 027 028import org.nuxeo.lib.stream.computation.Record; 029import org.nuxeo.lib.stream.computation.Watermark; 030import org.nuxeo.lib.stream.log.LogRecord; 031 032/** 033 * @since 9.3 034 */ 035public abstract class Renderer implements Consumer<LogRecord<Record>> { 036 037 public abstract void header(); 038 039 public abstract void footer(); 040 041 protected String watermarkString(long watermark) { 042 if (watermark == 0) { 043 return "0"; 044 } 045 SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS"); 046 Watermark wm = Watermark.ofValue(watermark); 047 return String.format("%s:%d%s", dateFormat.format(new Date(wm.getTimestamp())), wm.getSequence(), 048 wm.isCompleted() ? " completed" : ""); 049 } 050 051 protected String binaryString(byte[] data) { 052 String overview = ""; 053 if (data != null) { 054 try { 055 overview += new String(data, "UTF-8").substring(0, min(data.length, 512)); 056 } catch (UnsupportedEncodingException e) { 057 overview = "unsupported encoding"; 058 } 059 overview = overview.replaceAll("[^\\x20-\\x7e]", "."); 060 } 061 return overview; 062 } 063}