How to use

isReadOwner

method

in

org.infinispan.distribution.DistributionInfo

private void testBeforeTopology(BiFunction<FunctionalMap.ReadWriteMap<String, Integer>, String, Integer> op, int expectedIncrement) throws Exception {
 cache(0).put("key", 1);
 // Blocking on receiver side. We cannot block the StateResponseCommand on the server side since
 // the InternalCacheEntries in its state are the same instances of data stored in DataContainer
 // - therefore when the command is blocked on sender the command itself would be mutated by applying
 // the transaction below.
 BlockingStateConsumer bsc2 = TestingUtil.wrapComponent(cache(2), StateConsumer.class, BlockingStateConsumer::new);
 tm(2).begin();
 FunctionalMap.ReadWriteMap<String, Integer> rw = ReadWriteMapImpl.create(
    FunctionalMapImpl.create(this.<String, Integer>cache(2).getAdvancedCache()));
 assertEquals(new Integer(1), op.apply(rw, "key"));
 Transaction tx = tm(2).suspend();
 chf.setOwnerIndexes(0, 2);
 Future<?> future = fork(() -> {
   TestResourceTracker.testThreadStarted(this);
   addClusterEnabledCacheManager(cb).getCache();
 });
 bsc2.await();
 DistributionInfo distributionInfo = cache(2).getAdvancedCache().getDistributionManager().getCacheTopology().getDistribution("key");
 assertFalse(distributionInfo.isReadOwner());
 assertTrue(distributionInfo.isWriteBackup());
 tm(2).resume(tx);
 tm(2).commit();
 bsc2.unblock();
 future.get(10, TimeUnit.SECONDS);
 InternalCacheEntry<Object, Object> ice = cache(2).getAdvancedCache().getDataContainer().get("key");
 assertEquals("Current ICE: " + ice, 1 + expectedIncrement, ice.getValue());
}

private void testAfterTopology(BiFunction<FunctionalMap.ReadWriteMap<String, Integer>, String, Integer> op, int expectedIncrement) throws Exception {
 cache(0).put("key", 1);
 // Blocking on receiver side. We cannot block the StateResponseCommand on the server side since
 // the InternalCacheEntries in its state are the same instances of data stored in DataContainer
 // - therefore when the command is blocked on sender the command itself would be mutated by applying
 // the transaction below.
 BlockingStateConsumer bsc2 = TestingUtil.wrapComponent(cache(2), StateConsumer.class, BlockingStateConsumer::new);
 chf.setOwnerIndexes(0, 2);
 Future<?> future = fork(() -> {
   TestResourceTracker.testThreadStarted(this);
   addClusterEnabledCacheManager(cb).getCache();
 });
 bsc2.await();
 DistributionInfo distributionInfo = cache(2).getAdvancedCache().getDistributionManager().getCacheTopology().getDistribution("key");
 assertFalse(distributionInfo.isReadOwner());
 assertTrue(distributionInfo.isWriteBackup());
 withTx(tm(2), () -> {
   FunctionalMap.ReadWriteMap<String, Integer> rw = ReadWriteMapImpl.create(
      FunctionalMapImpl.create(this.<String, Integer>cache(2).getAdvancedCache()));
   assertEquals(new Integer(1), op.apply(rw, "key"));
   return null;
 });
 bsc2.unblock();
 future.get(10, TimeUnit.SECONDS);
 InternalCacheEntry<Object, Object> ice = cache(2).getAdvancedCache().getDataContainer().get("key");
 assertEquals("Current ICE: " + ice, 1 + expectedIncrement, ice.getValue());
}

private void doTest(Operation operation, boolean init) throws Exception {
 final MagicKey key = new MagicKey(cache(1), cache(2));
 if (init) {
   cache(0).put(key, "v1");
   assertInAllCache(key, "v1");
 }
 BlockingLocalTopologyManager bltm0 = replaceTopologyManagerDefaultCache(manager(0));
 BlockingLocalTopologyManager bltm1 = replaceTopologyManagerDefaultCache(manager(1));
 killMember(2, null, false);
 //CH_UPDATE + REBALANCE_START + CH_UPDATE(blocked)
 bltm0.expectRebalanceStartAfterLeave().unblock();
 bltm1.expectRebalanceStartAfterLeave().unblock();
 bltm0.expectPhaseConfirmation().unblock();
 bltm1.expectPhaseConfirmation().unblock();
 //check if we are in the correct state
 LocalizedCacheTopology cacheTopology = TestingUtil.extractComponent(cache(0), DistributionManager.class).getCacheTopology();
 DistributionInfo distributionInfo = cacheTopology.getDistribution(key);
 assertFalse(distributionInfo.isReadOwner());
 assertTrue(distributionInfo.isWriteOwner());
 assertEquals(address(1), distributionInfo.primary());
 operation.put(key, "v2", cache(1));
 BlockingLocalTopologyManager.finishRebalance(CacheTopology.Phase.READ_ALL_WRITE_ALL, bltm0, bltm1);
 waitForClusterToForm(); //let the cluster finish the state transfer
 assertInAllCache(key, "v2");
}