| /* |
| * 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.jackrabbit.oak.commons.jmx; |
| |
| import javax.management.MalformedObjectNameException; |
| import javax.management.ObjectName; |
| |
| /** |
| * Utility methods related to JMX |
| */ |
| public final class JmxUtil { |
| |
| private JmxUtil() { |
| } |
| |
| /** |
| * Checks if the passed value string can be used as is as part of |
| * JMX {@link javax.management.ObjectName} If it cannot be used then |
| * it would return a quoted string which is then safe to be used |
| * as part of ObjectName. |
| * |
| * <p>This is meant to avoid unnecessary quoting of value</p> |
| * |
| * @param unquotedValue to quote if required |
| * @return passed value or quoted value if required |
| */ |
| public static String quoteValueIfRequired(String unquotedValue) { |
| String result; |
| String quotedValue = ObjectName.quote(unquotedValue); |
| |
| //Check if some chars are escaped or not. In that case |
| //length of quoted string (excluding quotes) would differ |
| if (quotedValue.substring(1, quotedValue.length() - 1).equals(unquotedValue)) { |
| ObjectName on = null; |
| try { |
| //Quoting logic in ObjectName does not escape ',', '=' |
| //etc. So try now by constructing ObjectName. If that |
| //passes then value can be used as safely |
| |
| //Also we cannot just rely on ObjectName as it treats |
| //*, ? as pattern chars and which should ideally be escaped |
| on = new ObjectName("dummy", "dummy", unquotedValue); |
| } catch (MalformedObjectNameException ignore) { |
| //ignore |
| } |
| |
| if (on != null){ |
| result = unquotedValue; |
| } else { |
| result = quotedValue; |
| } |
| } else { |
| //Some escaping done. So do quote |
| result = quotedValue; |
| } |
| return result; |
| } |
| |
| |
| } |