Package org.apache.cassandra.db.context.CounterContext

Examples of org.apache.cassandra.db.context.CounterContext.ContextState.writeLocal()

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        left.writeLocal(CounterId.getLocalId(), 7L, 3L);

        ContextState right = ContextState.allocate(0, 1, 2, allocator);
        right.writeRemote(CounterId.fromInt(4), 4L, 4L);
        right.writeRemote(CounterId.fromInt(5), 5L, 5L);
        right.writeLocal(CounterId.getLocalId(), 2L, 9L);

        ByteBuffer merged = cc.merge(left.context, right.context, allocator);
        int hd = 4;

        assertEquals(hd + 5 * stepLength, merged.remaining());
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        left = ContextState.allocate(2, 0, 0, allocator);
        left.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        left.writeGlobal(CounterId.fromInt(2), 1L, 1L);

        right = ContextState.allocate(0, 1, 1, allocator);
        right.writeLocal(CounterId.fromInt(1), 100L, 100L);
        right.writeRemote(CounterId.fromInt(2), 100L, 100L);

        // global shards should dominate local/remote, even with lower clock and value
        merged = cc.merge(left.context, right.context, allocator);
        headerLength = headerSizeLength + 2 * headerEltLength;
 
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        ContextState mixed = ContextState.allocate(0, 1, 4, allocator);
        mixed.writeRemote(CounterId.fromInt(1), 1L, 1L);
        mixed.writeRemote(CounterId.fromInt(2), 2L, 2L);
        mixed.writeRemote(CounterId.fromInt(4), 4L, 4L);
        mixed.writeRemote(CounterId.fromInt(5), 5L, 5L);
        mixed.writeLocal(CounterId.getLocalId(), 12L, 12L);
        assertEquals(24L, cc.total(mixed.context));

        ContextState global = ContextState.allocate(3, 0, 0, allocator);
        global.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        global.writeGlobal(CounterId.fromInt(2), 2L, 2L);
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        cleared = cc.clearAllLocal(marked);
        assertSame(cleared, marked); // shouldn't alter anything either

        // a single local shard
        state = ContextState.allocate(0, 1, 0, allocator);
        state.writeLocal(CounterId.fromInt(1), 1L, 1L);

        assertFalse(cc.shouldClearLocal(state.context));
        marked = cc.markLocalToBeCleared(state.context);
        assertTrue(cc.shouldClearLocal(marked));
        assertEquals(-1, marked.getShort(marked.position()));
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        assertFalse(cc.shouldClearLocal(cleared));
        assertEquals(0, cleared.getShort(cleared.position()));

        // 2 global + 1 local shard
        state = ContextState.allocate(2, 1, 0, allocator);
        state.writeLocal(CounterId.fromInt(1), 1L, 1L);
        state.writeGlobal(CounterId.fromInt(2), 2L, 2L);
        state.writeGlobal(CounterId.fromInt(3), 3L, 3L);

        assertFalse(cc.shouldClearLocal(state.context));
        marked = cc.markLocalToBeCleared(state.context);
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    {
        ContextState state = ContextState.allocate(3, 3, 3, HeapAllocator.instance);

        state.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        state.writeRemote(CounterId.fromInt(2), 2L, 2L);
        state.writeLocal( CounterId.fromInt(3), 3L, 3L);
        state.writeGlobal(CounterId.fromInt(4), 4L, 4L);
        state.writeRemote(CounterId.fromInt(5), 5L, 5L);
        state.writeLocal( CounterId.fromInt(6), 6L, 6L);
        state.writeGlobal(CounterId.fromInt(7), 7L, 7L);
        state.writeRemote(CounterId.fromInt(8), 8L, 8L);
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        state.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        state.writeRemote(CounterId.fromInt(2), 2L, 2L);
        state.writeLocal( CounterId.fromInt(3), 3L, 3L);
        state.writeGlobal(CounterId.fromInt(4), 4L, 4L);
        state.writeRemote(CounterId.fromInt(5), 5L, 5L);
        state.writeLocal( CounterId.fromInt(6), 6L, 6L);
        state.writeGlobal(CounterId.fromInt(7), 7L, 7L);
        state.writeRemote(CounterId.fromInt(8), 8L, 8L);
        state.writeLocal(CounterId.fromInt(9), 9L, 9L);

        int headerLength = headerSizeLength + 6 * headerEltLength;
 
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        state.writeGlobal(CounterId.fromInt(4), 4L, 4L);
        state.writeRemote(CounterId.fromInt(5), 5L, 5L);
        state.writeLocal( CounterId.fromInt(6), 6L, 6L);
        state.writeGlobal(CounterId.fromInt(7), 7L, 7L);
        state.writeRemote(CounterId.fromInt(8), 8L, 8L);
        state.writeLocal(CounterId.fromInt(9), 9L, 9L);

        int headerLength = headerSizeLength + 6 * headerEltLength;
        assertEquals(headerLength, cc.findPositionOf(state.context, CounterId.fromInt(1)));
        assertEquals(headerLength + stepLength, cc.findPositionOf(state.context, CounterId.fromInt(2)));
        assertEquals(headerLength + 2 * stepLength, cc.findPositionOf(state.context, CounterId.fromInt(3)));
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    {
        ContextState state = ContextState.allocate(3, 3, 3, HeapAllocator.instance);

        state.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        state.writeRemote(CounterId.fromInt(2), 2L, 2L);
        state.writeLocal( CounterId.fromInt(3), 3L, 3L);
        state.writeGlobal(CounterId.fromInt(4), 4L, 4L);
        state.writeRemote(CounterId.fromInt(5), 5L, 5L);
        state.writeLocal( CounterId.fromInt(6), 6L, 6L);
        state.writeGlobal(CounterId.fromInt(7), 7L, 7L);
        state.writeRemote(CounterId.fromInt(8), 8L, 8L);
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        state.writeGlobal(CounterId.fromInt(1), 1L, 1L);
        state.writeRemote(CounterId.fromInt(2), 2L, 2L);
        state.writeLocal( CounterId.fromInt(3), 3L, 3L);
        state.writeGlobal(CounterId.fromInt(4), 4L, 4L);
        state.writeRemote(CounterId.fromInt(5), 5L, 5L);
        state.writeLocal( CounterId.fromInt(6), 6L, 6L);
        state.writeGlobal(CounterId.fromInt(7), 7L, 7L);
        state.writeRemote(CounterId.fromInt(8), 8L, 8L);
        state.writeLocal(CounterId.fromInt(9), 9L, 9L);

        assertEquals(ClockAndCount.create(1L, 1L), cc.getClockAndCountOf(state.context, CounterId.fromInt(1)));
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