1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.internal; 27 28 import java.util.function.Supplier; 29 30 /** 31 * JFR logger 32 * 33 */ 34 35 public final class Logger { 36 37 private final static int MAX_SIZE = 10000; 38 39 public static void log(LogTag logTag, LogLevel logLevel, String message) { 40 if (logTag.shouldLog(logLevel.level)) { 41 logInternal(logTag, logLevel, message); 42 } 43 } 44 45 public static void log(LogTag logTag, LogLevel logLevel, Supplier<String> messageSupplier) { 46 if (logTag.shouldLog(logLevel.level)) { 47 logInternal(logTag, logLevel, messageSupplier.get()); 48 } 49 } 50 51 private static void logInternal(LogTag logTag, LogLevel logLevel, String message) { 52 if (message == null || message.length() < MAX_SIZE) { 53 JVM.log(logTag.id, logLevel.level, message); 54 } else { 55 JVM.log(logTag.id, logLevel.level, message.substring(0, MAX_SIZE)); 56 } 57 } 58 }