@Override
protected void startNodeRegistration(Injector injector) {
// Register this node.
final NodeService nodeService = injector.getInstance(NodeService.class);
final ServerStatus serverStatus = injector.getInstance(ServerStatus.class);
final ActivityWriter activityWriter = injector.getInstance(ActivityWriter.class);
nodeService.registerServer(
serverStatus.getNodeId().toString(),
configuration.isMaster(),
configuration.getRestTransportUri());
serverStatus.setLocalMode(isLocal());
if (configuration.isMaster() && !nodeService.isOnlyMaster(serverStatus.getNodeId())) {
LOG.warn(
"Detected another master in the cluster. Retrying in {} seconds to make sure it is not "
+ "an old stale instance.",
TimeUnit.MILLISECONDS.toSeconds(configuration.getStaleMasterTimeout()));
try {
Thread.sleep(configuration.getStaleMasterTimeout());
} catch (InterruptedException e) {
/* nope */
}
if (!nodeService.isOnlyMaster(serverStatus.getNodeId())) {
// All devils here.
String what =
"Detected other master node in the cluster! Starting as non-master! "
+ "This is a mis-configuration you should fix.";
LOG.warn(what);
activityWriter.write(new Activity(what, Server.class));
// Write a notification.
final NotificationService notificationService =
injector.getInstance(NotificationService.class);
Notification notification =
notificationService
.buildNow()
.addType(Notification.Type.MULTI_MASTER)
.addSeverity(Notification.Severity.URGENT);
notificationService.publishIfFirst(notification);
configuration.setIsMaster(false);
} else {
LOG.warn("Stale master has gone. Starting as master.");
}
}
}
@DELETE
@Path("/{inputId}")
@Timed
@ApiOperation(value = "Stop specified input in all nodes")
@ApiResponses(
value = {
@ApiResponse(code = 404, message = "No such input."),
})
public Map<String, Optional<InputDeleted>> stop(
@ApiParam(name = "inputId", required = true) @PathParam("inputId") String inputId) {
final Map<String, Node> nodes = nodeService.allActive();
return nodes
.entrySet()
.stream()
.parallel()
.collect(
Collectors.toMap(
Map.Entry::getKey,
entry -> {
final RemoteInputStatesResource remoteInputStatesResource =
remoteInterfaceProvider.get(
entry.getValue(),
this.authenticationToken,
RemoteInputStatesResource.class);
try {
final Response<InputDeleted> response =
remoteInputStatesResource.stop(inputId).execute();
if (response.isSuccess()) {
return Optional.of(response.body());
} else {
LOG.warn(
"Unable to stop input on node {}: {}",
entry.getKey(),
response.message());
}
} catch (IOException e) {
LOG.warn("Unable to stop input on node {}:", entry.getKey(), e);
}
return Optional.absent();
}));
}
@GET
@Timed
@ApiOperation(value = "Get all input states")
@RequiresPermissions(RestPermissions.INPUTS_READ)
public Map<String, Set<InputStateSummary>> get() {
final Map<String, Node> nodes = nodeService.allActive();
return nodes
.entrySet()
.stream()
.parallel()
.collect(
Collectors.toMap(
Map.Entry::getKey,
entry -> {
final RemoteInputStatesResource remoteInputStatesResource =
remoteInterfaceProvider.get(
entry.getValue(),
this.authenticationToken,
RemoteInputStatesResource.class);
try {
final Response<InputStatesList> response =
remoteInputStatesResource.list().execute();
if (response.isSuccess()) {
return response.body().states();
} else {
LOG.warn(
"Unable to fetch input states from node {}: {}",
entry.getKey(),
response.message());
}
} catch (IOException e) {
LOG.warn("Unable to fetch input states from node {}:", entry.getKey(), e);
}
return Collections.emptySet();
}));
}