--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.management.jfr/share/classes/jdk/management/jfr/MBeanUtils.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.management.jfr;
+
+import java.lang.management.ManagementPermission;
+import java.security.Permission;
+import java.time.DateTimeException;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.format.DateTimeParseException;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+import javax.management.MalformedObjectNameException;
+import javax.management.ObjectName;
+
+import jdk.jfr.internal.management.ManagementSupport;
+
+final class MBeanUtils {
+
+ private static final Permission monitor = new ManagementPermission("monitor");
+ private static final Permission control = new ManagementPermission("control");
+
+ static ObjectName createObjectName() {
+ try {
+ return new ObjectName(FlightRecorderMXBean.MXBEAN_NAME);
+ } catch (MalformedObjectNameException mne) {
+ throw new Error("Can't happen", mne);
+ }
+ }
+
+ static void checkControl() {
+ SecurityManager secManager = System.getSecurityManager();
+ if (secManager != null) {
+ secManager.checkPermission(control);
+ }
+ }
+
+ static void checkMonitor() {
+ SecurityManager secManager = System.getSecurityManager();
+ if (secManager != null) {
+ secManager.checkPermission(monitor);
+ }
+ }
+
+ static <T, R> List<R> transformList(List<T> source, Function<T, R> function) {
+ return source.stream().map(function).collect(Collectors.toList());
+ }
+
+ static boolean booleanValue(String s) {
+ if ("true".equals(s)) {
+ return true;
+ }
+ if ("false".equals(s)) {
+ return false;
+ }
+ throw new IllegalArgumentException("Value must be true or false.");
+ }
+
+ static Duration duration(String s) throws NumberFormatException {
+ if (s == null) {
+ return null;
+ }
+ long l = ManagementSupport.parseTimespan(s);
+ if (l == 0) {
+ return null;
+ }
+ return Duration.ofNanos(l);
+ }
+
+ public static Instant parseTimestamp(String s, Instant defaultValue) {
+ if (s == null) {
+ return defaultValue;
+ }
+ try {
+ return Instant.parse(s);
+ } catch(DateTimeParseException e ) {
+ // OK, try with milliseconds since epoch
+ // before giving up.
+ }
+ try {
+ return Instant.ofEpochMilli(Long.parseLong(s));
+ } catch (NumberFormatException | DateTimeException nfr) {
+ throw new IllegalArgumentException("Not a valid timestamp " + s);
+ }
+ }
+
+ static Long size(String s) throws NumberFormatException {
+ long size = Long.parseLong(s);
+ if (size < 0) {
+ throw new IllegalArgumentException("Negative size not allowed");
+ }
+ return size;
+ }
+
+ public static int parseBlockSize(String string, int defaultSize) {
+ if (string == null) {
+ return defaultSize;
+ }
+ int size = Integer.parseInt(string);
+ if (size <1) {
+ throw new IllegalArgumentException("Block size msut be at least 1 byte");
+ }
+ return size;
+ }
+}
+