/** Returns a "smart" node client to a random node in the cluster */
public synchronized Client smartClient() {
NodeAndClient randomNodeAndClient = getRandomNodeAndClient();
if (randomNodeAndClient != null) {
return randomNodeAndClient.nodeClient();
}
Assert.fail("No smart client found");
return null; // can't happen
}
/**
* Returns a node client to random node but not the master. This method will fail if no non-master
* client is available.
*/
public synchronized Client nonMasterClient() {
ensureOpen();
NodeAndClient randomNodeAndClient =
getRandomNodeAndClient(Predicates.not(new MasterNodePredicate(getMasterName())));
if (randomNodeAndClient != null) {
return randomNodeAndClient.nodeClient(); // ensure node client non-master is requested
}
Assert.fail("No non-master client found");
return null; // can't happen
}
private void restartAllNodes(boolean rollingRestart, RestartCallback callback) throws Exception {
ensureOpen();
List<NodeAndClient> toRemove = new ArrayList<TestCluster.NodeAndClient>();
try {
for (NodeAndClient nodeAndClient : nodes.values()) {
if (!callback.doRestart(nodeAndClient.name)) {
logger.info("Closing node [{}] during restart", nodeAndClient.name);
toRemove.add(nodeAndClient);
nodeAndClient.close();
}
}
} finally {
for (NodeAndClient nodeAndClient : toRemove) {
nodes.remove(nodeAndClient.name);
}
}
logger.info("Restarting remaining nodes rollingRestart [{}]", rollingRestart);
if (rollingRestart) {
int numNodesRestarted = 0;
for (NodeAndClient nodeAndClient : nodes.values()) {
callback.doAfterNodes(numNodesRestarted++, nodeAndClient.nodeClient());
logger.info("Restarting node [{}] ", nodeAndClient.name);
nodeAndClient.restart(callback);
}
} else {
int numNodesRestarted = 0;
for (NodeAndClient nodeAndClient : nodes.values()) {
callback.doAfterNodes(numNodesRestarted++, nodeAndClient.nodeClient());
logger.info("Stopping node [{}] ", nodeAndClient.name);
nodeAndClient.node.close();
}
for (NodeAndClient nodeAndClient : nodes.values()) {
logger.info("Starting node [{}] ", nodeAndClient.name);
nodeAndClient.restart(callback);
}
}
}