@Override public synchronized SegmentProperties getSnapshot() { return StreamSegmentInformation.from(this).attributes(new HashMap<>(getAttributes())).build(); }
/** * Tests the getStreamSegmentInfo() method. */ @Test public void testGetStreamSegmentInfo() { @Cleanup val context = new TestContext(); context.container.startAsync().awaitRunning(); // Non-existent segment. AssertExtensions.assertSuppliedFutureThrows( "Unexpected exception when the segment does not exist.", () -> context.container.getStreamSegmentInfo(SEGMENT_NAME, TIMEOUT), ex -> ex instanceof StreamSegmentNotExistsException); // Create a segment, add some data, set some attributes, "truncate" it and then seal it. val storageInfo = context.storage.create(SEGMENT_NAME, TIMEOUT) .thenCompose(handle -> context.storage.write(handle, 0, new ByteArrayInputStream(new byte[10]), 10, TIMEOUT)) .thenCompose(v -> context.storage.getStreamSegmentInfo(SEGMENT_NAME, TIMEOUT)).join(); val expectedInfo = StreamSegmentInformation.from(storageInfo) .startOffset(storageInfo.getLength() / 2) .attributes(ImmutableMap.of(UUID.randomUUID(), 100L, Attributes.EVENT_COUNT, 1L)) .build(); // Fetch the SegmentInfo from the ReadOnlyContainer and verify it is as expected. val actual = context.container.getStreamSegmentInfo(SEGMENT_NAME, TIMEOUT).join(); Assert.assertEquals("Unexpected Name.", expectedInfo.getName(), actual.getName()); Assert.assertEquals("Unexpected Length.", expectedInfo.getLength(), actual.getLength()); Assert.assertEquals("Unexpected Sealed status.", expectedInfo.isSealed(), actual.isSealed()); }