How to use

forServers

method

in

org.apache.ignite.cluster.ClusterGroup

/** {@inheritDoc} */
@Override public int getTotalServerNodes() {
  return cluster.forServers().nodes().size();
}

/**
 * Get list with the specified node types.
 *
 * @param srv {@code True} to include server nodes.
 * @param client {@code True} to include client nodes.
 * @return List with the specified node types.
 */
private List<ClusterNode> nodesList(boolean srv, boolean client) {
  List<ClusterNode> nodes = new ArrayList<>();
  if (srv)
    nodes.addAll(cluster.forServers().nodes());
  if (client)
    nodes.addAll(cluster.forClients().nodes());
  return nodes;
}

/** {@inheritDoc} */
@Override public int getActiveBaselineNodes() {
  Collection<BaselineNode> baselineNodes = cluster.ignite().cluster().currentBaselineTopology();
  if (baselineNodes != null && !baselineNodes.isEmpty()) {
    Set<Object> bltIds = new HashSet<>(baselineNodes.size());
    for (BaselineNode baselineNode : baselineNodes)
      bltIds.add(baselineNode.consistentId());
    int count = 0;
    for (ClusterNode node : cluster.forServers().nodes())
      if (bltIds.contains(node.consistentId()))
        count++;
    return count;
  }
  return 0;
}

/**
 * @throws Exception If failed.
 */
@Test
public void testEmptyGroup() throws Exception {
  ClusterGroup emptyGrp = ignite.cluster().forAttribute("nonExistent", "val");
  assertEquals(0, emptyGrp.forOldest().nodes().size());
  assertEquals(0, emptyGrp.forYoungest().nodes().size());
  assertEquals(0, emptyGrp.forAttribute("nonExistent2", "val").nodes().size());
  assertEquals(0, emptyGrp.forCacheNodes("cacheName").nodes().size());
  assertEquals(0, emptyGrp.forClientNodes("cacheName").nodes().size());
  assertEquals(0, emptyGrp.forClients().nodes().size());
  assertEquals(0, emptyGrp.forDaemons().nodes().size());
  assertEquals(0, emptyGrp.forDataNodes("cacheName").nodes().size());
  assertEquals(0, emptyGrp.forRandom().nodes().size());
  assertEquals(0, emptyGrp.forRemotes().nodes().size());
  assertEquals(0, emptyGrp.forServers().nodes().size());
  assertEquals(0, emptyGrp.forHost(ignite.cluster().localNode()).nodes().size());
  assertEquals(0, emptyGrp.forHost("127.0.0.1").nodes().size());
}

/** {@inheritDoc} */
@Override public int getTotalServerNodes() {
  return cluster.forServers().nodes().size();
}

/**
 * Get list with the specified node types.
 *
 * @param srv {@code True} to include server nodes.
 * @param client {@code True} to include client nodes.
 * @return List with the specified node types.
 */
private List<ClusterNode> nodesList(boolean srv, boolean client) {
  List<ClusterNode> nodes = new ArrayList<>();
  if (srv)
    nodes.addAll(cluster.forServers().nodes());
  if (client)
    nodes.addAll(cluster.forClients().nodes());
  return nodes;
}

/** {@inheritDoc} */
@Override public int getActiveBaselineNodes() {
  Collection<BaselineNode> baselineNodes = cluster.ignite().cluster().currentBaselineTopology();
  if (baselineNodes != null && !baselineNodes.isEmpty()) {
    Set<Object> bltIds = new HashSet<>(baselineNodes.size());
    for (BaselineNode baselineNode : baselineNodes)
      bltIds.add(baselineNode.consistentId());
    int count = 0;
    for (ClusterNode node : cluster.forServers().nodes())
      if (bltIds.contains(node.consistentId()))
        count++;
    return count;
  }
  return 0;
}