/** DNodes are informed to stop the deployment, as something failed. */
public void abortDeploy(List<String> dnodes, long version) {
for (String dnode : dnodes) {
DNodeService.Client client = null;
try {
client = context.getDNodeClient(dnode, false);
client.abortDeploy(version);
} catch (Exception e) {
log.error("Error sending abort deploy flag to DNode [" + dnode + "]", e);
} finally {
if (client != null) {
client.getOutputProtocol().getTransport().close();
}
}
}
CoordinationStructures.DEPLOY_IN_PROGRESS.decrementAndGet();
}
/**
* Call this method for starting an asynchronous deployment given a proper deploy request - proxy
* method for {@link QNodeHandler}. Returns a {@link QueryStatus} with the status of the request.
*/
public DeployInfo deploy(List<DeployRequest> deployRequests) {
// A new unique version number is generated.
long version = context.getCoordinationStructures().uniqueVersionId();
// Generate the list of actions per DNode
Map<String, List<DeployAction>> actionsPerDNode =
generateDeployActionsPerDNode(deployRequests, version);
// Starting the countdown latch.
ICountDownLatch countDownLatchForDeploy =
context.getCoordinationStructures().getCountDownLatchForDeploy(version);
Set<String> dnodesInvolved = actionsPerDNode.keySet();
countDownLatchForDeploy.setCount(dnodesInvolved.size());
// Sending deploy signals to each DNode
for (Map.Entry<String, List<DeployAction>> actionPerDNode : actionsPerDNode.entrySet()) {
DNodeService.Client client = null;
try {
client = context.getDNodeClient(actionPerDNode.getKey(), false);
client.deploy(actionPerDNode.getValue(), version);
} catch (Exception e) {
log.error("Error sending deploy actions to DNode [" + actionPerDNode.getKey() + "]", e);
abortDeploy(new ArrayList<String>(actionsPerDNode.keySet()), version);
DeployInfo errDeployInfo = new DeployInfo();
errDeployInfo.setError("Error connecting to DNode " + actionPerDNode.getKey());
return errDeployInfo;
} finally {
client.getOutputProtocol().getTransport().close();
}
}
// Initiating an asynchronous process to manage the deployment
deployThread.execute(
new ManageDeploy(
new ArrayList(actionsPerDNode.keySet()),
deployRequests,
version,
context.getConfig().getLong(QNodeProperties.DEPLOY_TIMEOUT, -1),
context.getConfig().getLong(QNodeProperties.DEPLOY_SECONDS_TO_CHECK_ERROR)));
DeployInfo deployInfo = new DeployInfo();
deployInfo.setVersion(version);
deployInfo.setStartedAt(SimpleDateFormat.getInstance().format(new Date()));
return deployInfo;
}