/** Restarts a random node in the cluster and calls the callback during restart. */
public void restartRandomNode(RestartCallback callback) throws Exception {
ensureOpen();
NodeAndClient nodeAndClient = getRandomNodeAndClient();
if (nodeAndClient != null) {
logger.info("Restarting random node [{}] ", nodeAndClient.name);
nodeAndClient.restart(callback);
}
}
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);
}
}
}