Call this method to disconnect yhe client from DDSL.
Call this method to disconnect yhe client from DDSL. When you do this All services added by serviceUp() will be removed from DDSL. This also happens if your program quits.
If you undeploy your app or quit gracefully, it is best practice to call disconnect
Returns list of all services pressent in the ddsl-network
Returns list of all services pressent in the ddsl-network
This method return just one locatiion for the service beeing asked for.
This method return just one locatiion for the service beeing asked for. It return the one best locations. The best location is the first element in the list returned from the method getServiceLocations.
Have a look at the documentation for getServiceLocations() to get more info.
If available locations is found, an NoDDSLServiceLocationFoundException is thrown
Clients would probably use the method getBestServiceLocation() instead of this one.
Clients would probably use the method getBestServiceLocation() instead of this one.
Returns the list of all available locations where the service being asked for can be found just now. The returned list is sorted, with the best location for your client first.. The list is sorted by quality. Locations with equal quality is randomized - so you would automatically get distributed load if you have several instances of your service running at the same time. Services running on the same host as the asking client will be preferred.
If available locations is found, an NoDDSLServiceLocationFoundException is thrown
You can use this method to remove your service from DDSL.
You can use this method to remove your service from DDSL. This will automatically happen if you use disconnect ot just quit your app.
Tells DDSL that your service is up.
Tells DDSL that your service is up.. If persistent == false, it will stay as UP forever or until you call serviceDown, disconnect, or until your app quit. If persistent == true, it will stay up even after your app quits.
Returns true if success
Tells DDSL that your service is up.
Tells DDSL that your service is up.. It will stay as UP forever or until you call serviceDown, disconnect, or until your app quit
Returns true if success
Since we migt have a situation where our ddsl / zookeeper solution is broken or down we have to have a solution where we can override it.
This FallbackClient gets a path from sys env, then tries to load that property file. then tries to look up the requested sid from this file. if success, this url is returned.
It's critical that this FallbackClient impl logs a lot about what it is looking for (and possible using).
This makes it possible, in an error situation, to look at the client logfile and see what to do, to update the fallback info to make(hack) the system to work again...