/**
* @param key Key.
* @param cacheName Cache name.
* @return Ignite instance which has primary cache for given key.
*/
protected Ignite primaryNode(Object key, String cacheName) {
List<Ignite> allGrids = Ignition.allGrids();
assertFalse("There are no alive nodes.", F.isEmpty(allGrids));
Ignite ignite = allGrids.get(0);
Affinity<Object> aff = ignite.affinity(cacheName);
ClusterNode node = aff.mapKeyToNode(key);
assertNotNull("There are no cache affinity nodes", node);
return grid(node);
}
/**
* @param key Key.
* @return Near cache for key.
*/
protected IgniteCache<Integer, Integer> nearCache(Integer key) {
List<Ignite> allGrids = Ignition.allGrids();
assertFalse("There are no alive nodes.", F.isEmpty(allGrids));
Affinity<Integer> aff = allGrids.get(0).affinity(null);
Collection<ClusterNode> nodes = aff.mapKeyToPrimaryAndBackups(key);
for (Ignite ignite : allGrids) {
if (!nodes.contains(ignite.cluster().localNode())) return ignite.cache(null);
}
fail();
return null;
}
/**
* @param key Key.
* @param cacheName Cache name.
* @return Ignite instance which has primary cache for given key.
*/
protected Ignite backupNode(Object key, String cacheName) {
List<Ignite> allGrids = Ignition.allGrids();
assertFalse("There are no alive nodes.", F.isEmpty(allGrids));
Ignite ignite = allGrids.get(0);
Affinity<Object> aff = ignite.affinity(cacheName);
Collection<ClusterNode> nodes = aff.mapKeyToPrimaryAndBackups(key);
assertTrue(
"Expected more than one node for key [key=" + key + ", nodes=" + nodes + ']',
nodes.size() > 1);
Iterator<ClusterNode> it = nodes.iterator();
it.next(); // Skip primary.
return grid(it.next());
}