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25 
26 package jdk.jfr.jmx;
27 
28 import java.util.List;
29 
30 import jdk.jfr.RecordingState;
31 import jdk.management.jfr.FlightRecorderMXBean;
32 import jdk.management.jfr.RecordingInfo;
33 import jdk.test.lib.jfr.CommonHelper;
34 import jdk.test.lib.jfr.VoidFunction;
35 
36 /**
37  * @test
38  * @key jfr
39  * @requires vm.hasJFR
40  * @library /test/lib /test/jdk
41  * @run main/othervm jdk.jfr.jmx.TestRecordingStateInvalid
42  */
43 public class TestRecordingStateInvalid {
main(String[] args)44     public static void main(String[] args) throws Throwable {
45         FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();
46 
47         long recId = createRecording(bean);
48         verifyIllegalState(()->{ bean.stopRecording(recId); }, "Stop not started");
49 
50         startRecording(recId, bean);
51         verifyIllegalState(()->{ bean.startRecording(recId); }, "Start already started");
52 
53         stopRecording(recId, bean);
54         verifyIllegalState(()->{ bean.startRecording(recId); }, "Start already stopped");
55         verifyIllegalState(()->{ bean.stopRecording(recId); }, "Stop already stopped");
56 
57         destroyRecording(recId, bean);
58         verifyIllegalArg(()->{ bean.startRecording(recId); }, "Start already destroyed");
59         verifyIllegalArg(()->{ bean.stopRecording(recId); }, "Stop already destroyed");
60 
61     }
62 
createRecording(FlightRecorderMXBean bean)63     private static long createRecording(FlightRecorderMXBean bean) throws Exception {
64         List<RecordingInfo> preCreateRecordings = bean.getRecordings();
65         long recId = bean.newRecording();
66         JmxHelper.verifyNotExists(recId, preCreateRecordings);
67         JmxHelper.verifyState(recId, RecordingState.NEW, bean);
68         return recId;
69     }
70 
startRecording(long recId, FlightRecorderMXBean bean)71     private static void startRecording(long recId, FlightRecorderMXBean bean) throws Exception {
72         JmxHelper.verifyState(recId, RecordingState.NEW, bean);
73         bean.startRecording(recId);
74         JmxHelper.verifyState(recId, RecordingState.RUNNING, bean);
75     }
76 
stopRecording(long recId, FlightRecorderMXBean bean)77     private static void stopRecording(long recId, FlightRecorderMXBean bean) throws Exception {
78         JmxHelper.verifyState(recId, RecordingState.RUNNING, bean);
79         bean.stopRecording(recId);
80         JmxHelper.verifyState(recId, RecordingState.STOPPED, bean);
81     }
82 
destroyRecording(long recId, FlightRecorderMXBean bean)83     private static void destroyRecording(long recId, FlightRecorderMXBean bean) throws Exception {
84         JmxHelper.verifyState(recId, RecordingState.STOPPED, bean);
85         bean.closeRecording(recId);
86         JmxHelper.verifyNotExists(recId, bean.getRecordings());
87     }
88 
verifyIllegalState(VoidFunction f, String msg)89     private static void verifyIllegalState(VoidFunction f, String msg) throws Throwable {
90         CommonHelper.verifyException(f, msg, IllegalStateException.class);
91     }
92 
verifyIllegalArg(VoidFunction f, String msg)93     private static void verifyIllegalArg(VoidFunction f, String msg) throws Throwable {
94         CommonHelper.verifyException(f, msg, IllegalArgumentException.class);
95     }
96 
97 }
98