protected void connectSensors() {
setAttribute(
DATASTORE_URL,
String.format(
"postgresql://%s:%s/", getAttribute(HOSTNAME), getAttribute(POSTGRESQL_PORT)));
Maybe<SshMachineLocation> machine = Locations.findUniqueSshMachineLocation(getLocations());
if (machine.isPresent()) {
feed =
SshFeed.builder()
.entity(this)
.machine(machine.get())
.poll(
new SshPollConfig<Boolean>(SERVICE_UP)
.command("ps -ef | grep [p]ostgres")
.setOnSuccess(true)
.setOnFailureOrException(false))
.build();
} else {
LOG.warn(
"Location(s) {} not an ssh-machine location, so not polling for status; setting serviceUp immediately",
getLocations());
}
}
@SuppressWarnings("unchecked")
public static <T> Maybe<Class<T>> tryLoadFromClasspath(String typeName, ManagementContext mgmt) {
Class<T> clazz;
try {
clazz = (Class<T>) mgmt.getCatalog().getRootClassLoader().loadClass(typeName);
} catch (ClassNotFoundException e) {
LOG.debug("Class {} not found on classpath", typeName);
return Maybe.absent(new Throwable("Could not find " + typeName + " on classpath"));
}
return Maybe.<Class<T>>of(clazz);
}
@SuppressWarnings("unchecked")
public static <T extends Entity> Maybe<Class<T>> tryLoadEntityFromCatalogue(
String entityTypeName, ManagementContext mgmt) {
try {
return (Maybe<Class<T>>)
(Maybe<?>)
Maybe.<Class<? extends Entity>>of(
mgmt.getCatalog().loadClassByType(entityTypeName, Entity.class));
} catch (NoSuchElementException e) {
LOG.debug("Class {} not found in catalogue classpath", entityTypeName);
return Maybe.absent();
}
}
public static HostAndPort getBrooklynAccessibleAddress(Entity entity, int port) {
String host;
// look up port forwarding
PortForwardManager pfw = entity.getConfig(PORT_FORWARDING_MANAGER);
if (pfw != null) {
Collection<Location> ll = entity.getLocations();
Maybe<SupportsPortForwarding> machine =
Machines.findUniqueElement(ll, SupportsPortForwarding.class);
if (machine.isPresent()) {
synchronized (BrooklynAccessUtils.class) {
// TODO finer-grained synchronization
HostAndPort hp = pfw.lookup((MachineLocation) machine.get(), port);
if (hp != null) return hp;
Location l = (Location) machine.get();
if (l instanceof SupportsPortForwarding) {
Cidr source = entity.getConfig(MANAGEMENT_ACCESS_CIDR);
if (source != null) {
log.debug(
"BrooklynAccessUtils requesting new port-forwarding rule to access "
+ port
+ " on "
+ entity
+ " (at "
+ l
+ ", enabled for "
+ source
+ ")");
// TODO discuss, is this the best way to do it
// (will probably _create_ the port forwarding rule!)
hp = ((SupportsPortForwarding) l).getSocketEndpointFor(source, port);
if (hp != null) return hp;
} else {
log.warn(
"No "
+ MANAGEMENT_ACCESS_CIDR.getName()
+ " configured for "
+ entity
+ ", so cannot forward port "
+ port
+ " "
+ "even though "
+ PORT_FORWARDING_MANAGER.getName()
+ " was supplied");
}
}
}
}
}
host = entity.getAttribute(Attributes.HOSTNAME);
if (host != null) return HostAndPort.fromParts(host, port);
throw new IllegalStateException(
"Cannot find way to access port "
+ port
+ " on "
+ entity
+ " from Brooklyn (no host.name)");
}
/** Returns the CAMP platform associated with a management context, if there is one. */
public static Maybe<CampPlatform> getCampPlatform(ManagementContext mgmt) {
CampPlatform result = mgmt.getConfig().getConfig(BrooklynServerConfig.CAMP_PLATFORM);
if (result != null) return Maybe.of(result);
return Maybe.absent("No CAMP Platform is registered with this Brooklyn management context.");
}
@Override
public synchronized Maybe<OsgiManager> getOsgiManager() {
if (!isRunning()) throw new IllegalStateException("Management context no longer running");
return Maybe.of(osgiManager);
}