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25 
26 package jdk.jfr.api.metadata.annotations;
27 
28 import java.lang.annotation.ElementType;
29 import java.lang.annotation.Retention;
30 import java.lang.annotation.RetentionPolicy;
31 import java.lang.annotation.Target;
32 
33 import jdk.jfr.AnnotationElement;
34 import jdk.jfr.Event;
35 import jdk.jfr.EventType;
36 import jdk.jfr.Label;
37 import jdk.jfr.MetadataDefinition;
38 import jdk.jfr.SettingDefinition;
39 import jdk.jfr.SettingDescriptor;
40 import jdk.jfr.ValueDescriptor;
41 import jdk.test.lib.Asserts;
42 import jdk.test.lib.jfr.Events;
43 import jdk.test.lib.jfr.SimpleSetting;
44 
45 /**
46  * @test
47  * @key jfr
48  * @requires vm.hasJFR
49  * @library /test/lib
50  * @run main/othervm jdk.jfr.api.metadata.annotations.TestLabel
51  */
52 public class TestLabel {
53 
54     @MetadataDefinition
55     @Label("Annotation Label")
56     @Target({ ElementType.TYPE })
57     @Retention(RetentionPolicy.RUNTIME)
58     @interface AnnotionWithLabel {
59     }
60 
61     @AnnotionWithLabel
62     @Label("Event Label")
63     static class LabelEvent extends Event {
64         @Label("Field Label")
65         boolean labledField;
66 
67         @SettingDefinition
68         @Label("Setting Label")
dummy(SimpleSetting ds)69         boolean dummy(SimpleSetting ds) {
70             return true;
71         }
72     }
73 
main(String[] args)74     public static void main(String[] args) throws Exception {
75         // Event
76         EventType t = EventType.getEventType(LabelEvent.class);
77         Asserts.assertEquals(t.getLabel(), "Event Label", "Incorrect label for event");
78 
79         // Field
80         ValueDescriptor field = t.getField("labledField");
81         Asserts.assertEquals(field.getLabel(), "Field Label", "Incorrect label for field");
82 
83         // Annotation
84         AnnotationElement awl = Events.getAnnotationByName(t, AnnotionWithLabel.class.getName());
85         Label label = awl.getAnnotation(Label.class);
86         Asserts.assertEquals(label.value(), "Annotation Label", "Incorrect label for annotation");
87 
88         // Setting
89         for (SettingDescriptor v: t.getSettingDescriptors()) {
90             if (v.getName().equals("dummy")) {
91                 Label settingLabel = v.getAnnotation(Label.class);
92                 Asserts.assertEquals(settingLabel.value(), "Setting Label", "Incorrect label for setting");
93             }
94         }
95     }
96 }
97