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25 
26 package jdk.jfr.internal.management;
27 
28 import java.io.Closeable;
29 
30 import java.io.IOException;
31 import java.io.InputStream;
32 import java.util.concurrent.atomic.AtomicLong;
33 
34 import jdk.jfr.Recording;
35 import jdk.jfr.internal.consumer.FinishedStream;
36 import jdk.jfr.internal.consumer.OngoingStream;
37 
38 // abstract class that hides if a recording is ongoing or finished.
39 public abstract class EventByteStream implements Closeable {
40     public static final String NAME = "Remote Recording Stream";
41     private static AtomicLong idCounter = new AtomicLong();
42 
43     private final long identifier;
44     private volatile long time;
45 
EventByteStream()46     public EventByteStream() {
47         this.identifier = idCounter.incrementAndGet();
48     }
49 
newOngoingStream(Recording recording, int blockSize, long startTimeNanos,long endTimeNanos)50     public static EventByteStream newOngoingStream(Recording recording, int blockSize, long  startTimeNanos,long endTimeNanos) {
51         return new OngoingStream(recording, blockSize, startTimeNanos, endTimeNanos);
52     }
53 
newFinishedStream(InputStream is, int blockSize)54     public static EventByteStream newFinishedStream(InputStream is, int blockSize) {
55         return new FinishedStream(is, blockSize);
56     }
57 
touch()58     protected final void touch() {
59         time = System.currentTimeMillis();
60     }
61 
getLastTouched()62     public final long getLastTouched() {
63         return time;
64     }
65 
read()66     public abstract byte[] read() throws IOException;
67 
getId()68     public final long getId() {
69         return identifier;
70     }
71 }
72