1 /* 2 * Copyright (c) 2015, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import com.oracle.java.testlibrary.OutputAnalyzer; 25 import com.oracle.java.testlibrary.dcmd.CommandExecutor; 26 import com.oracle.java.testlibrary.dcmd.JMXExecutor; 27 import org.testng.annotations.Test; 28 import static org.testng.Assert.*; 29 30 /* 31 * @test 32 * @bug 8054890 33 * @summary Test of VM.set_flag diagnostic command 34 * @library /testlibrary 35 * @build com.oracle.java.testlibrary.* 36 * @build com.oracle.java.testlibrary.dcmd.* 37 * @run testng SetVMFlagTest 38 */ 39 40 public class SetVMFlagTest { 41 private static final String MANAGEABLE_PATTERN = "\\s*bool\\s+(\\S+)\\s+[\\:]?=\\s+" + 42 "(.*?)\\s+\\{manageable\\}"; 43 private static final String IMMUTABLE_PATTERN = "\\s*uintx\\s+(\\S+)\\s+[\\:]?=\\s+" + 44 "(.*?)\\s+\\{product\\}"; 45 46 public void run(CommandExecutor executor) { 47 setMutableFlag(executor); 48 setMutableFlagWithInvalidValue(executor); 49 setImmutableFlag(executor); 50 setNonExistingFlag(executor); 51 } 52 53 @Test 54 public void jmx() { 55 run(new JMXExecutor()); 56 } 57 58 private void setMutableFlag(CommandExecutor executor) { 59 OutputAnalyzer out = getAllFlags(executor); 60 String flagName = out.firstMatch(MANAGEABLE_PATTERN, 1); 61 String flagVal = out.firstMatch(MANAGEABLE_PATTERN, 2); 62 63 System.out.println("### Setting a mutable flag '" + flagName + "'"); 64 65 if (flagVal == null) { 66 System.err.println(out.getOutput()); 67 throw new Error("Can not find a boolean manageable flag"); 68 } 69 70 Boolean blnVal = Boolean.parseBoolean(flagVal); 71 72 out = executor.execute("VM.set_flag " + flagName + " " + (blnVal ? 0 : 1)); 73 out.stderrShouldBeEmpty(); 74 75 out = getAllFlags(executor); 76 77 String newFlagVal = out.firstMatch(MANAGEABLE_PATTERN.replace("(\\S+)", flagName), 1); 78 79 assertNotEquals(newFlagVal, flagVal); 80 } 81 82 private void setMutableFlagWithInvalidValue(CommandExecutor executor) { 83 OutputAnalyzer out = getAllFlags(executor); 84 String flagName = out.firstMatch(MANAGEABLE_PATTERN, 1); 85 String flagVal = out.firstMatch(MANAGEABLE_PATTERN, 2); 86 87 System.out.println("### Setting a mutable flag '" + flagName + "' to an invalid value"); 88 89 if (flagVal == null) { 90 System.err.println(out.getOutput()); 91 throw new Error("Can not find a boolean manageable flag"); 92 } 93 94 // a boolean flag accepts only 0/1 as its value 95 out = executor.execute("VM.set_flag " + flagName + " unexpected_value"); 96 out.stderrShouldBeEmpty(); 97 out.stdoutShouldContain("flag value must be a boolean (1 or 0)"); 98 99 out = getAllFlags(executor); 100 101 String newFlagVal = out.firstMatch(MANAGEABLE_PATTERN.replace("(\\S+)", flagName), 1); 102 103 assertEquals(newFlagVal, flagVal); 104 } 105 106 private void setImmutableFlag(CommandExecutor executor) { 107 OutputAnalyzer out = getAllFlags(executor); 108 String flagName = out.firstMatch(IMMUTABLE_PATTERN, 1); 109 String flagVal = out.firstMatch(IMMUTABLE_PATTERN, 2); 110 111 System.out.println("### Setting an immutable flag '" + flagName + "'"); 112 113 if (flagVal == null) { 114 System.err.println(out.getOutput()); 115 throw new Error("Can not find an immutable uintx flag"); 116 } 117 118 Long numVal = Long.parseLong(flagVal); 119 120 out = executor.execute("VM.set_flag " + flagName + " " + (numVal + 1)); 121 out.stderrShouldBeEmpty(); 122 out.stdoutShouldContain("only 'writeable' flags can be set"); 123 124 out = getAllFlags(executor); 125 126 String newFlagVal = out.firstMatch(IMMUTABLE_PATTERN.replace("(\\S+)", flagName), 1); 127 128 assertEquals(newFlagVal, flagVal); 129 } 130 131 private void setNonExistingFlag(CommandExecutor executor) { 132 String unknownFlag = "ThisIsUnknownFlag"; 133 System.out.println("### Setting a non-existing flag '" + unknownFlag + "'"); 134 OutputAnalyzer out = executor.execute("VM.set_flag " + unknownFlag + " 1"); 135 out.stderrShouldBeEmpty(); 136 out.stdoutShouldContain("flag " + unknownFlag + " does not exist"); 137 } 138 139 private OutputAnalyzer getAllFlags(CommandExecutor executor) { 140 return executor.execute("VM.flags -all", true); 141 } 142 }